/* roulang page: index */
:root {
  --color-bg: #0C0910;
  --color-bg-deep: #08060C;
  --color-surface: #14101D;
  --color-surface-2: #1A1525;
  --color-gold: #D6B07A;
  --color-gold-light: #EACDA0;
  --color-text: #F2EDE3;
  --color-muted: #A89F97;
  --color-accent: #A78BFA;
  --color-line: rgba(255,255,255,0.08);
  --color-success: #34D399;
  --radius-card: 16px;
  --radius-btn: 8px;
  --shadow-card: 0 20px 50px rgba(0,0,0,0.4);
  --transition: 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 1rem;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.25s ease; }
button { font-family: inherit; border: none; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 1rem; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 1.25rem; padding-right: 1.25rem; }
@media (min-width: 768px) { .container { padding-left: 2rem; padding-right: 2rem; } }
section { position: relative; }
.section { padding-top: 64px; padding-bottom: 64px; }
@media (min-width: 768px) { .section { padding-top: 96px; padding-bottom: 96px; } }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.section-header p { color: var(--color-muted); font-size: 1rem; max-width: 620px; margin: 0 auto; }
font-variant-numeric, .tabular-nums { font-variant-numeric: tabular-nums; }

/* ===== Navbar ===== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  background: rgba(10,8,14,0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  padding: 8px 20px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  transition: box-shadow 0.3s ease, background 0.3s ease;
  width: calc(100% - 40px);
  max-width: 1200px;
}
.site-nav.scrolled { background: rgba(8,6,12,0.9); box-shadow: 0 12px 50px rgba(0,0,0,0.6); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.nav-logo { font-size: 1.3rem; font-weight: 900; color: var(--color-gold); letter-spacing: 0.02em; white-space: nowrap; }
.nav-logo i { margin-right: 6px; opacity: 0.9; }
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-muted);
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-link:hover { color: var(--color-text); background: rgba(255,255,255,0.05); }
.nav-link.active { color: var(--color-text); background: rgba(214,176,122,0.12); }
.nav-link.active::before { content: ""; display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--color-gold); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, #EACDA0, #D6B07A);
  color: #0C0910;
  font-size: 0.9rem;
  font-weight: 700;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(214,176,122,0.4); color: #0C0910; }
.nav-toggle { display: none; background: none; color: var(--color-text); font-size: 1.4rem; padding: 8px; border-radius: 8px; }
@media (max-width: 1023px) {
  .nav-menu {
    position: fixed;
    top: 76px;
    left: 20px;
    right: 20px;
    flex-direction: column;
    align-items: stretch;
    background: rgba(10,8,14,0.97);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 16px;
    gap: 6px;
    display: none;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  }
  .nav-menu.open { display: flex; }
  .nav-link { justify-content: center; padding: 12px 18px; font-size: 1rem; }
  .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
}

/* ===== Hero ===== */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  text-align: center;
  padding: 120px 20px 80px;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,6,12,0.65) 0%, rgba(8,6,12,0.75) 50%, rgba(8,6,12,0.92) 100%);
  z-index: 1;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 0%, rgba(8,6,12,0.5) 100%);
  z-index: 2;
}
.hero-content { position: relative; z-index: 3; max-width: 860px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid rgba(214,176,122,0.3);
  background: rgba(214,176,122,0.1);
  color: var(--color-gold-light);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 28px;
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #EACDA0 0%, #D6B07A 50%, #f0d8ac 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--color-muted);
  max-width: 620px;
  margin: 0 auto 40px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 48px; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, #EACDA0, #D6B07A);
  color: #0C0910;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.25s cubic-bezier(0.22,1,0.36,1);
  border: none;
  position: relative;
  overflow: hidden;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(214,176,122,0.4); filter: brightness(1.08); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:focus-visible, .btn-outline:focus-visible, .btn-ghost:focus-visible { outline: 2px solid var(--color-gold); outline-offset: 3px; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: 8px;
  background: transparent;
  color: var(--color-gold-light);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid rgba(214,176,122,0.5);
  transition: all 0.25s cubic-bezier(0.22,1,0.36,1);
}
.btn-outline:hover { background: rgba(214,176,122,0.1); border-color: var(--color-gold); transform: translateY(-2px); }
.btn-outline:active { transform: scale(0.98); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text);
  font-weight: 500;
  padding: 10px 8px;
  background: none;
  transition: gap 0.25s ease, color 0.2s ease;
}
.btn-ghost:hover { gap: 12px; color: var(--color-gold); }
.hero-tags { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-tags span {
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* ===== Benefits Ladder ===== */
.benefits { background: var(--color-bg-deep); position: relative; }
.benefits::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(214,176,122,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.benefits-grid {
  display: flex;
  align-items: flex-end;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}
.benefit-card {
  background: var(--color-surface);
  border-radius: 16px;
  padding: 36px 32px;
  flex: 1 1 280px;
  max-width: 380px;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
  opacity: 0.88;
  margin-bottom: 30px;
}
.benefit-card:hover { transform: translateY(-6px); box-shadow: 0 30px 60px rgba(0,0,0,0.45); border-color: rgba(214,176,122,0.2); }
.benefit-card.featured {
  background: linear-gradient(180deg, #1A1525 0%, #14101D 100%);
  border: 1.5px solid rgba(214,176,122,0.5);
  flex-basis: 320px;
  padding-top: 48px;
  padding-bottom: 48px;
  opacity: 1;
  position: relative;
  margin-bottom: 10px;
  box-shadow: 0 30px 70px rgba(0,0,0,0.5), 0 0 40px rgba(214,176,122,0.05);
}
.benefit-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 20px;
  background: linear-gradient(135deg, #EACDA0, #D6B07A);
  color: #0C0910;
  font-size: 0.78rem;
  font-weight: 800;
  border-radius: 999px;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 16px rgba(214,176,122,0.4);
}
.benefit-level { font-size: 1.35rem; font-weight: 800; color: var(--color-text); margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.benefit-card.featured .benefit-level { color: var(--color-gold-light); }
.benefit-desc { color: var(--color-muted); font-size: 0.9rem; margin-bottom: 24px; line-height: 1.7; }
.benefit-list { margin-bottom: 28px; flex: 1; }
.benefit-list li { display: flex; align-items: center; gap: 10px; padding: 8px 0; font-size: 0.95rem; color: var(--color-text); }
.benefit-list li i { color: var(--color-gold); font-size: 0.75rem; width: 18px; height: 18px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: rgba(214,176,122,0.1); }
.benefit-progress { margin-bottom: 24px; }
.benefit-progress .bar-label { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--color-muted); margin-bottom: 6px; }
.benefit-progress .bar { height: 4px; border-radius: 2px; background: rgba(255,255,255,0.06); overflow: hidden; }
.benefit-progress .bar span { display: block; height: 100%; border-radius: 2px; background: linear-gradient(90deg, #A78BFA, #D6B07A); }

/* ===== Pricing Table ===== */
.pricing { background: var(--color-bg); }
.pricing-table-wrap { overflow-x: auto; border-radius: 16px; border: 1px solid var(--color-line); background: var(--color-surface); box-shadow: var(--shadow-card); }
.pricing-table { width: 100%; min-width: 640px; border-collapse: collapse; }
.pricing-table th, .pricing-table td { padding: 18px 20px; text-align: center; border-bottom: 1px solid var(--color-line); }
.pricing-table th { font-weight: 700; font-size: 1rem; color: var(--color-muted); background: rgba(255,255,255,0.02); }
.pricing-table td { font-size: 0.95rem; }
.pricing-table th:first-child, .pricing-table td:first-child { text-align: left; color: var(--color-muted); }
.pricing-table tr:last-child td { border-bottom: none; }
.pricing-table tr:hover td { background: rgba(255,255,255,0.015); }
.pricing-table .recommend-col {
  background: rgba(214,176,122,0.06);
  border-left: 1px solid rgba(214,176,122,0.2);
  border-right: 1px solid rgba(214,176,122,0.2);
}
.pricing-table .recommend-col th {
  background: linear-gradient(135deg, #EACDA0, #D6B07A);
  color: #0C0910;
  font-weight: 800;
  border-radius: 0;
  position: relative;
}
.pricing-table .recommend-col td { color: var(--color-text); }
.pricing-table .price-flag { font-size: 0.72rem; font-weight: 700; background: rgba(12,9,16,0.3); padding: 2px 10px; border-radius: 999px; letter-spacing: 0.05em; }
.pricing-table .check { color: var(--color-success); }
.pricing-table .dash { color: rgba(255,255,255,0.2); }
.pricing-cta { margin-top: 32px; text-align: center; }

/* ===== News Section ===== */
.news-list { display: flex; flex-direction: column; gap: 16px; max-width: 900px; margin: 0 auto; }
.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.06);
  background: var(--color-surface);
  transition: all 0.3s ease;
  position: relative;
}
.news-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 3px;
  border-radius: 3px;
  background: var(--color-gold);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.news-item:hover { background: var(--color-surface-2); border-color: rgba(214,176,122,0.2); transform: translateX(4px); }
.news-item:hover::before { opacity: 1; }
.news-thumb { flex-shrink: 0; width: 160px; height: 100px; border-radius: 12px; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.news-item:hover .news-thumb img { transform: scale(1.03); }
.news-body { flex: 1; min-width: 0; }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; flex-wrap: wrap; }
.news-tag {
  font-size: 0.75rem;
  padding: 3px 12px;
  border-radius: 999px;
  background: rgba(214,176,122,0.12);
  color: var(--color-gold-light);
  font-weight: 600;
}
.news-date { font-size: 0.78rem; color: var(--color-muted); }
.news-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 6px; color: var(--color-text); line-height: 1.4; transition: color 0.2s ease; }
.news-body h3:hover { color: var(--color-gold-light); }
.news-body p { font-size: 0.88rem; color: var(--color-muted); line-height: 1.6; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.news-arrow { flex-shrink: 0; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); color: var(--color-gold); transition: all 0.3s ease; }
.news-item:hover .news-arrow { transform: translateX(4px); background: rgba(214,176,122,0.12); border-color: rgba(214,176,122,0.3); }
.news-empty {
  border: 1px dashed var(--color-line);
  border-radius: 16px;
  padding: 48px;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.95rem;
}
.news-more { text-align: center; margin-top: 36px; }

/* ===== Promo CTA ===== */
.promo-panel {
  border-radius: 24px;
  padding: 64px 40px;
  background: linear-gradient(135deg, rgba(214,176,122,0.08) 0%, rgba(8,6,12,0.9) 50%), url('/assets/images/backpic/back-2.png') right/cover no-repeat;
  border: 1px solid rgba(214,176,122,0.2);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.promo-panel::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -30%;
  width: 70%;
  height: 200%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.04), transparent);
  transform: rotate(25deg);
  animation: shine 4s ease-in-out infinite;
}
@keyframes shine {
  0% { left: -60%; } 60% { left: 120%; } 100% { left: 120%; }
}
.promo-panel h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 900; margin-bottom: 12px; }
.promo-panel .promo-sub { color: var(--color-muted); margin-bottom: 40px; font-size: 1.05rem; }
.countdown { display: flex; justify-content: center; gap: 16px; margin-bottom: 40px; flex-wrap: wrap; }
.countdown-item {
  background: #08060C;
  border: 1px solid rgba(214,176,122,0.2);
  border-radius: 12px;
  padding: 16px 22px;
  min-width: 80px;
  text-align: center;
}
.countdown-item .num { font-size: 1.8rem; font-weight: 800; color: var(--color-gold-light); font-variant-numeric: tabular-nums; display: block; line-height: 1.2; }
.countdown-item .label { font-size: 0.72rem; color: var(--color-muted); margin-top: 4px; letter-spacing: 0.1em; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 16px;
  background: var(--color-surface);
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.faq-item.open { border-color: rgba(214,176,122,0.3); background: var(--color-surface-2); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: color 0.2s ease;
}
.faq-question:hover { color: var(--color-gold-light); }
.faq-question .icon { flex-shrink: 0; width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: rgba(255,255,255,0.05); color: var(--color-gold); transition: transform 0.3s ease, background 0.3s ease; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); background: rgba(214,176,122,0.15); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-answer-inner { padding: 0 24px 24px; color: var(--color-muted); font-size: 0.92rem; line-height: 1.8; }

/* ===== Contact Form ===== */
.contact { background: var(--color-bg-deep); }
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 40px; max-width: 900px; margin: 0 auto; }
@media (min-width: 768px) { .contact-grid { grid-template-columns: 1fr 1.4fr; } }
.contact-info h3 { font-size: 1.4rem; font-weight: 800; margin-bottom: 12px; }
.contact-info p { color: var(--color-muted); font-size: 0.92rem; margin-bottom: 24px; line-height: 1.7; }
.contact-info-list { display: flex; flex-direction: column; gap: 16px; }
.contact-info-list li { display: flex; align-items: center; gap: 14px; font-size: 0.92rem; color: var(--color-text); }
.contact-info-list li i { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border-radius: 10px; background: rgba(214,176,122,0.1); color: var(--color-gold); font-size: 0.9rem; }
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--color-surface);
  padding: 32px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.07);
}
.form-group label { font-size: 0.85rem; color: var(--color-muted); margin-bottom: 8px; display: block; }
.form-input, .form-textarea, .form-select {
  width: 100%;
  background: #0D0A13;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--color-text);
  font-size: 0.95rem;
  transition: all 0.25s ease;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 4px rgba(214,176,122,0.15);
  background: #0D0A13;
}
.form-input::placeholder, .form-textarea::placeholder { color: rgba(255,255,255,0.25); }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%23D6B07A'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }
.form-textarea { min-height: 110px; resize: vertical; }
.form-submit { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 30px; border-radius: 8px; background: linear-gradient(135deg, #EACDA0, #D6B07A); color: #0C0910; font-weight: 700; font-size: 1rem; transition: all 0.25s ease; }
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(214,176,122,0.35); filter: brightness(1.06); }
.form-submit:active { transform: scale(0.98); }
.form-submit:disabled { opacity: 0.6; transform: none; cursor: not-allowed; box-shadow: none; }
.privacy-tip { text-align: center; font-size: 0.75rem; color: rgba(255,255,255,0.3); margin-top: 8px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-deep);
  border-top: 1px solid rgba(214,176,122,0.15);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
@media (min-width: 768px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.2fr; } }
.footer-brand .logo-text { font-size: 1.4rem; font-weight: 900; color: var(--color-gold); margin-bottom: 14px; }
.footer-brand p { color: var(--color-muted); font-size: 0.85rem; line-height: 1.8; max-width: 260px; }
.footer-title { font-size: 0.9rem; font-weight: 700; color: var(--color-text); margin-bottom: 20px; letter-spacing: 0.05em; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--color-muted); font-size: 0.85rem; transition: all 0.2s ease; }
.footer-links a:hover { color: var(--color-gold); padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; color: var(--color-muted); font-size: 0.85rem; margin-bottom: 12px; align-items: flex-start; }
.footer-contact i { color: var(--color-gold); margin-top: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  text-align: center;
  color: rgba(255,255,255,0.3);
  font-size: 0.78rem;
}
.footer-bottom .domain { color: rgba(255,255,255,0.4); }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #0C0910; }
::-webkit-scrollbar-thumb { background: #2a2433; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-gold); }

/* ===== Accessibility & Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; transform: none !important; }
  html { scroll-behavior: auto; }
}
.section-divider { height: 1px; max-width: 600px; margin: 0 auto; background: linear-gradient(90deg, transparent, rgba(214,176,122,0.2), transparent); }

@media (max-width: 767px) {
  .benefits-grid { flex-direction: column; align-items: center; }
  .benefit-card, .benefit-card.featured { max-width: 100%; width: 100%; }
  .news-item { flex-direction: column; align-items: flex-start; gap: 12px; }
  .news-thumb { width: 100%; height: 180px; }
  .news-arrow { display: none; }
  .pricing-table-wrap { margin: 0 -10px; border-radius: 12px; }
  .promo-panel { padding: 40px 20px; }
  .countdown-item { min-width: 60px; padding: 12px 14px; }
  .countdown-item .num { font-size: 1.3rem; }
  .hero { min-height: 85vh; padding: 100px 20px 60px; }
  .site-nav { top: 10px; }
}

/* roulang page: category1 */
:root {
            --color-bg: #0C0910;
            --color-bg-deep: #08060C;
            --color-surface: #14101D;
            --color-surface-2: #1A1525;
            --color-gold: #D6B07A;
            --color-gold-light: #EACDA0;
            --color-text: #F2EDE3;
            --color-muted: #A89F97;
            --color-accent: #A78BFA;
            --color-line: rgba(255, 255, 255, 0.08);
            --color-success: #34D399;
            --radius-card: 16px;
            --radius-btn: 8px;
            --radius-input: 10px;
            --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.4);
            --transition: 0.25s cubic-bezier(0.22, 1, 0.36, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--color-bg);
            color: var(--color-text);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img, a, button, input, textarea {
            -webkit-tap-highlight-color: transparent;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input, textarea, select {
            font-family: inherit;
            font-size: 1rem;
            color: var(--color-text);
            background: #0D0A13;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-input);
            padding: 12px 16px;
            outline: none;
            width: 100%;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            border-color: var(--color-gold);
            box-shadow: 0 0 0 4px rgba(214, 176, 122, 0.15);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        @media (min-width: 768px) {
            .container {
                padding: 0 2rem;
            }
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.9rem 2rem;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, #EACDA0, #D6B07A);
            color: #14101D;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            filter: brightness(1.08);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(214, 176, 122, 0.25);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--color-gold);
            outline-offset: 3px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.9rem 2rem;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid var(--color-gold);
            color: var(--color-gold-light);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.04);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--color-gold);
            outline-offset: 3px;
        }
        .section-padding {
            padding: 4rem 0;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding: 6rem 0;
            }
        }
        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }
        .section-subtitle {
            color: var(--color-muted);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 720px;
        }
        .text-gold {
            color: var(--color-gold);
        }
        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            background: rgba(214, 176, 122, 0.1);
            border: 1px solid rgba(214, 176, 122, 0.25);
            color: var(--color-gold-light);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.05em;
        }
        .card-surface {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-line);
            padding: 2rem;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .card-surface:hover {
            transform: translateY(-6px);
            border-color: rgba(214, 176, 122, 0.3);
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5), 0 0 30px rgba(214, 176, 122, 0.05);
        }
        /* ===== 导航 ===== */
        .site-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 2rem);
            max-width: 1100px;
            background: rgba(10, 8, 14, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            padding: 0.5rem 0.75rem;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 900;
            font-size: 1.1rem;
            color: var(--color-gold-light);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo i {
            color: var(--color-gold);
            font-size: 1rem;
        }
        .nav-menu {
            display: none;
            align-items: center;
            gap: 0.3rem;
            flex: 1;
            justify-content: center;
        }
        @media (min-width: 900px) {
            .nav-menu {
                display: flex;
            }
        }
        .nav-link {
            padding: 0.5rem 1.1rem;
            border-radius: 999px;
            color: var(--color-muted);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            position: relative;
            transition: all var(--transition);
        }
        .nav-link:hover {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-link.active {
            color: var(--color-text);
            background: rgba(214, 176, 122, 0.12);
        }
        .nav-link.active::after {
            content: "";
            display: block;
            width: 5px;
            height: 5px;
            background: var(--color-gold);
            border-radius: 50%;
            margin: 3px auto 0;
        }
        .nav-cta {
            display: none;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.25rem;
            border-radius: 999px;
            background: linear-gradient(135deg, #EACDA0, #D6B07A);
            color: #14101D;
            font-size: 0.85rem;
            font-weight: 700;
            white-space: nowrap;
            transition: all var(--transition);
        }
        @media (min-width: 640px) {
            .nav-cta {
                display: inline-flex;
            }
        }
        .nav-cta:hover {
            filter: brightness(1.1);
            transform: scale(1.02);
        }
        .nav-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            color: var(--color-text);
            font-size: 1.1rem;
            background: rgba(255, 255, 255, 0.05);
            transition: background var(--transition);
        }
        @media (min-width: 900px) {
            .nav-toggle {
                display: none;
            }
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        /* 移动端菜单 */
        .mobile-menu-open .nav-menu {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            right: 0;
            background: rgba(10, 8, 14, 0.95);
            backdrop-filter: blur(20px);
            border-radius: 20px;
            border: 1px solid var(--color-line);
            padding: 1rem;
            gap: 0.3rem;
            z-index: 999;
        }
        .mobile-menu-open .nav-menu .nav-link {
            padding: 0.8rem 1.5rem;
            width: 100%;
            border-radius: 10px;
        }
        .mobile-menu-open .nav-toggle {
            display: flex;
        }
        @media (min-width: 900px) {
            .mobile-menu-open .nav-menu {
                display: flex;
                flex-direction: row;
                position: static;
                background: none;
                border: none;
                padding: 0;
            }
        }
        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            min-height: 42vh;
            display: flex;
            align-items: center;
            padding: 140px 0 60px;
            background: linear-gradient(135deg, rgba(8, 6, 12, 0.92), rgba(12, 9, 16, 0.75)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--color-line);
        }
        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 20%, rgba(214, 176, 122, 0.06), transparent 60%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--color-muted);
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-muted);
        }
        .breadcrumb a:hover {
            color: var(--color-gold);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.2);
        }
        .breadcrumb .current {
            color: var(--color-gold-light);
        }
        .page-hero h1 {
            font-size: clamp(2.5rem, 5vw, 3.8rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }
        .page-hero p.lead {
            font-size: 1.05rem;
            color: var(--color-muted);
            max-width: 680px;
            line-height: 1.8;
        }
        /* ===== 分类标签 ===== */
        .category-badges {
            display: flex;
            gap: 0.8rem;
            margin-top: 1.5rem;
            flex-wrap: wrap;
        }
        .category-badges .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 1.1rem;
            border-radius: 999px;
            background: rgba(214, 176, 122, 0.08);
            border: 1px solid rgba(214, 176, 122, 0.2);
            color: var(--color-gold-light);
            font-size: 0.85rem;
            font-weight: 500;
        }
        .category-badges .badge i {
            font-size: 0.75rem;
            color: var(--color-gold);
        }
        /* ===== 平台亮点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin-top: 3rem;
        }
        @media (min-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 1.8rem 1.6rem;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 0;
            background: var(--color-gold);
            transition: height 0.4s ease;
        }
        .feature-card:hover {
            border-color: rgba(214, 176, 122, 0.3);
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            height: 100%;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(214, 176, 122, 0.1);
            border: 1px solid rgba(214, 176, 122, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
            color: var(--color-gold);
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.65;
        }
        /* ===== 平台模块 ===== */
        .module-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-top: 3rem;
        }
        @media (min-width: 768px) {
            .module-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .module-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 2rem;
            transition: all var(--transition);
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .module-card .num {
            font-size: 0.85rem;
            color: var(--color-gold);
            font-weight: 700;
            letter-spacing: 0.15em;
            margin-bottom: 0.6rem;
        }
        .module-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .module-card h3 i {
            color: var(--color-gold);
            font-size: 1rem;
        }
        .module-card ul {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 0;
        }
        .module-card ul li {
            padding: 0.4rem 0;
            color: var(--color-muted);
            font-size: 0.9rem;
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
            line-height: 1.6;
        }
        .module-card ul li i {
            color: var(--color-gold);
            font-size: 0.75rem;
            margin-top: 0.35rem;
            flex-shrink: 0;
        }
        /* ===== 使用流程 ===== */
        .flow-section {
            background: var(--color-bg-deep);
            position: relative;
            overflow: hidden;
        }
        .flow-section::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(214, 176, 122, 0.04), transparent 70%);
        }
        .flow-steps {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin-top: 3rem;
            counter-reset: flow;
        }
        @media (min-width: 768px) {
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .flow-steps {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .flow-step {
            position: relative;
            padding: 2rem 1.5rem;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            transition: all var(--transition);
            counter-increment: flow;
        }
        .flow-step:hover {
            border-color: rgba(214, 176, 122, 0.3);
            transform: translateY(-4px);
        }
        .flow-step .step-num {
            font-size: 2.5rem;
            font-weight: 900;
            color: transparent;
            -webkit-text-stroke: 1px rgba(214, 176, 122, 0.5);
            line-height: 1;
            margin-bottom: 0.8rem;
        }
        .flow-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .flow-step p {
            font-size: 0.88rem;
            color: var(--color-muted);
            line-height: 1.65;
        }
        .flow-step::before {
            content: "";
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(214, 176, 122, 0.06);
            border: 1px solid rgba(214, 176, 122, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--color-gold);
        }
        @media (min-width: 1024px) {
            .flow-step::after {
                content: "→";
                position: absolute;
                right: -1.5rem;
                top: 50%;
                transform: translateY(-50%);
                color: var(--color-gold);
                font-size: 1.2rem;
                opacity: 0.5;
                z-index: 2;
            }
            .flow-step:last-child::after {
                display: none;
            }
        }
        /* ===== 内容展示 ===== */
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.2rem;
            margin-top: 2.5rem;
        }
        @media (min-width: 768px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .content-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .content-row {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 14px;
            padding: 1.5rem;
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            transition: all var(--transition);
        }
        .content-row:hover {
            background: var(--color-surface-2);
            border-color: rgba(214, 176, 122, 0.25);
            transform: translateX(4px);
        }
        .content-row .icon-box {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(214, 176, 122, 0.1);
            border: 1px solid rgba(214, 176, 122, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-gold);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .content-row h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.3rem;
            line-height: 1.4;
        }
        .content-row p {
            font-size: 0.85rem;
            color: var(--color-muted);
            line-height: 1.6;
        }
        /* ===== 适用场景 ===== */
        .scenarios-wrap {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin-top: 2.5rem;
        }
        @media (min-width: 768px) {
            .scenarios-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .scenario-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.8rem;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            transition: all var(--transition);
        }
        .scenario-item:hover {
            border-color: rgba(214, 176, 122, 0.25);
            transform: translateY(-4px);
        }
        .scenario-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(214, 176, 122, 0.08);
            border: 1px solid rgba(214, 176, 122, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--color-gold);
            font-size: 1.1rem;
        }
        .scenario-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .scenario-item p {
            font-size: 0.88rem;
            color: var(--color-muted);
            line-height: 1.65;
        }
        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 2.5rem auto 0;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 14px;
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.active {
            border-color: rgba(214, 176, 122, 0.4);
            background: var(--color-surface-2);
        }
        .faq-q {
            width: 100%;
            padding: 1.2rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            background: none;
            cursor: pointer;
            transition: color var(--transition);
        }
        .faq-q:hover {
            color: var(--color-gold-light);
        }
        .faq-q .icon {
            font-size: 1.2rem;
            color: var(--color-gold);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-q .icon {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.active .faq-a {
            max-height: 500px;
        }
        .faq-a .inner {
            padding: 0 1.5rem 1.4rem;
            color: var(--color-muted);
            font-size: 0.92rem;
            line-height: 1.75;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin: 0 1.5rem 0;
            padding: 1.2rem 0 1.4rem;
        }
        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(8, 6, 12, 0.95), rgba(20, 16, 29, 0.9)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            border-radius: 24px;
            padding: 3.5rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(214, 176, 122, 0.2);
        }
        @media (min-width: 768px) {
            .cta-section {
                padding: 4.5rem 3rem;
            }
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, transparent 45%, rgba(214, 176, 122, 0.03) 50%, transparent 55%);
            animation: shine 8s infinite;
        }
        @keyframes shine {
            0% { transform: translateX(-30%); }
            50%, 100% { transform: translateX(30%); }
        }
        .cta-section h2 {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 900;
            margin-bottom: 1rem;
        }
        .cta-section p {
            color: var(--color-muted);
            max-width: 600px;
            margin: 0 auto 2rem;
            font-size: 1rem;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* ===== 联系表单 ===== */
        .contact-wrap {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            margin-top: 2.5rem;
            margin-bottom: 3.5rem;
        }
        @media (min-width: 768px) {
            .contact-wrap {
                grid-template-columns: 1fr 1fr;
                gap: 3rem;
            }
        }
        .contact-info .info-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .contact-info ul {
            list-style: none;
            padding: 0;
            margin: 1.2rem 0 0;
        }
        .contact-info ul li {
            padding: 0.5rem 0;
            color: var(--color-muted);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .contact-info ul li i {
            color: var(--color-gold);
            width: 20px;
            text-align: center;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            color: var(--color-muted);
            margin-bottom: 0.4rem;
            font-weight: 500;
        }
        .privacy-note {
            text-align: center;
            font-size: 0.8rem;
            color: var(--color-muted);
            margin-top: 1rem;
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-deep);
            border-top: 1px solid var(--color-gold);
            padding: 4rem 0 2rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.2fr;
                gap: 2rem;
            }
        }
        .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 900;
            color: var(--color-gold-light);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .footer-brand .logo-text i {
            color: var(--color-gold);
        }
        .footer-brand p {
            color: var(--color-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 1.2rem;
        }
        .footer-links, .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li, .footer-contact li {
            padding: 0.3rem 0;
        }
        .footer-links a {
            color: var(--color-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-gold);
        }
        .footer-contact li {
            color: var(--color-muted);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .footer-contact li i {
            color: var(--color-gold);
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 2rem;
            text-align: center;
            color: var(--color-muted);
            font-size: 0.85rem;
        }
        .footer-bottom .domain {
            color: var(--color-gold);
        }
        /* ===== 响应式微调 ===== */
        @media (max-width: 520px) {
            .page-hero {
                padding: 120px 0 40px;
                min-height: auto;
            }
            .page-hero h1 {
                font-size: 2rem;
                line-height: 1.25;
            }
            .section-title {
                font-size: 1.5rem;
                line-height: 1.35;
            }
            .features-grid, .module-grid, .flow-steps, .scenarios-wrap {
                gap: 1rem;
            }
            .feature-card, .module-card, .flow-step, .scenario-item {
                padding: 1.4rem;
            }
            .site-nav {
                width: calc(100% - 1.2rem);
                top: 10px;
                padding: 0.4rem 0.5rem;
            }
            .footer-grid {
                gap: 2rem;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            .cta-section::before {
                animation: none;
            }
        }

/* roulang page: article */
:root {
            --color-bg: #0C0910;
            --color-bg-deep: #08060C;
            --color-surface: #14101D;
            --color-surface-2: #1A1525;
            --color-gold: #D6B07A;
            --color-gold-light: #EACDA0;
            --color-text: #F2EDE3;
            --color-muted: #A89F97;
            --color-accent: #A78BFA;
            --color-line: rgba(255, 255, 255, 0.08);
            --color-success: #34D399;
            --radius-card: 16px;
            --radius-btn: 8px;
            --radius-input: 10px;
            --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.4);
            --transition: 0.25s cubic-bezier(0.22, 1, 0.36, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), opacity var(--transition);
        }

        a:hover {
            color: var(--color-gold);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        input,
        textarea,
        select {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        main {
            flex: 1;
        }

        /* ===== 悬浮胶囊导航 ===== */
        .site-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 32px);
            max-width: 1200px;
            background: rgba(10, 8, 14, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--color-line);
            border-radius: 999px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-nav.scrolled {
            background: rgba(10, 8, 14, 0.92);
            box-shadow: 0 10px 45px rgba(0, 0, 0, 0.5);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 12px 10px 22px;
            gap: 12px;
        }

        .nav-logo {
            font-size: 1.22rem;
            font-weight: 800;
            color: var(--color-gold);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: color var(--transition);
        }

        .nav-logo i {
            color: var(--color-gold);
            font-size: 1.05rem;
        }

        .nav-logo:hover {
            color: var(--color-gold-light);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.9rem;
            color: var(--color-muted);
            position: relative;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .nav-link:hover {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: var(--color-text);
            background: rgba(214, 176, 122, 0.12);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--color-gold);
        }

        .nav-cta {
            padding: 10px 20px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
            color: #08060C;
            font-weight: 700;
            font-size: 0.88rem;
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            box-shadow: 0 4px 20px rgba(214, 176, 122, 0.22);
            transition: all var(--transition);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(214, 176, 122, 0.35);
            color: #08060C;
        }

        .nav-cta:active {
            transform: scale(0.98);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            color: var(--color-text);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* ===== 页面通用按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
            color: #08060C;
            font-weight: 700;
            font-size: 0.95rem;
            line-height: 1.4;
            border: none;
            box-shadow: 0 4px 18px rgba(214, 176, 122, 0.25);
            transition: all var(--transition);
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 35px rgba(214, 176, 122, 0.35);
            color: #08060C;
            filter: brightness(1.05);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-primary:focus-visible,
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(214, 176, 122, 0.6);
            outline-offset: 3px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-btn);
            background: transparent;
            color: var(--color-gold);
            font-weight: 600;
            font-size: 0.9rem;
            border: 1px solid rgba(214, 176, 122, 0.5);
            transition: all var(--transition);
            cursor: pointer;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.04);
            border-color: var(--color-gold);
            color: var(--color-gold-light);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: scale(0.98);
        }

        /* ===== 文章页头部 ===== */
        .article-head {
            position: relative;
            padding: 180px 0 72px;
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--color-line);
            overflow: hidden;
        }

        .article-head::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 6, 12, 0.72) 0%, rgba(12, 9, 16, 0.94) 100%);
            z-index: 1;
        }

        .article-head::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(180deg, transparent, rgba(12, 9, 16, 0.9));
            z-index: 1;
        }

        .article-head .container {
            position: relative;
            z-index: 2;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin-bottom: 36px;
            font-size: 0.875rem;
            color: var(--color-muted);
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--color-muted);
            opacity: 0.4;
            margin-left: 2px;
        }

        .breadcrumb a {
            color: var(--color-muted);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--color-gold);
        }

        .breadcrumb li[aria-current="page"] {
            color: var(--color-gold-light);
            font-weight: 500;
        }

        /* 文章标题区 */
        .article-title-wrap {
            max-width: 860px;
        }

        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(214, 176, 122, 0.14);
            border: 1px solid rgba(214, 176, 122, 0.3);
            color: var(--color-gold-light);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .article-title-wrap h1 {
            font-size: clamp(1.85rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text);
            letter-spacing: -0.015em;
            margin-bottom: 20px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            color: var(--color-muted);
            font-size: 0.875rem;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta i {
            color: var(--color-gold);
        }

        .meta-divider {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.25);
        }

        /* ===== 正文区 ===== */
        .article-main {
            background: var(--color-bg);
            padding: 72px 0 56px;
        }

        .article-content {
            max-width: 760px;
            margin: 0 auto;
            font-size: 1.02rem;
            line-height: 1.9;
            color: var(--color-text);
            word-break: break-word;
        }

        .article-content p {
            margin-bottom: 1.7em;
            color: rgba(242, 237, 227, 0.92);
        }

        .article-content h2 {
            font-size: 1.55rem;
            font-weight: 800;
            color: var(--color-gold-light);
            margin: 2em 0 1em;
            line-height: 1.4;
            letter-spacing: -0.01em;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 1.8em 0 0.8em;
            line-height: 1.5;
        }

        .article-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-gold);
            margin: 1.5em 0 0.6em;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.7em 1.2em;
            padding-left: 0;
        }

        .article-content ul {
            list-style: none;
        }

        .article-content ul li {
            position: relative;
            padding-left: 1.4em;
            margin-bottom: 0.7em;
            color: rgba(242, 237, 227, 0.9);
        }

        .article-content ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.68em;
            width: 8px;
            height: 8px;
            border-radius: 2px;
            background: var(--color-gold);
            opacity: 0.7;
        }

        .article-content ol {
            list-style: decimal;
            padding-left: 1.4em;
        }

        .article-content ol li {
            margin-bottom: 0.7em;
            color: rgba(242, 237, 227, 0.9);
            padding-left: 0.3em;
        }

        .article-content li::marker {
            color: var(--color-gold);
            font-weight: 700;
        }

        .article-content blockquote {
            margin: 1.8em 0;
            padding: 16px 24px;
            background: var(--color-surface);
            border-left: 3px solid var(--color-gold);
            border-radius: 0 12px 12px 0;
            color: var(--color-muted);
            font-style: normal;
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-content img {
            border-radius: 12px;
            margin: 2em auto;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 2em 0;
            font-size: 0.95rem;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
        }

        .article-content table thead {
            background: var(--color-surface-2);
        }

        .article-content table th {
            padding: 14px 16px;
            text-align: left;
            font-weight: 700;
            color: var(--color-gold-light);
            border-bottom: 1px solid var(--color-line);
        }

        .article-content table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--color-line);
            color: rgba(242, 237, 227, 0.85);
        }

        .article-content table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .article-content a {
            color: var(--color-gold);
            border-bottom: 1px solid rgba(214, 176, 122, 0.3);
            transition: all var(--transition);
        }

        .article-content a:hover {
            color: var(--color-gold-light);
            border-bottom-color: var(--color-gold);
        }

        .article-content hr {
            border: none;
            height: 1px;
            background: var(--color-line);
            margin: 2.5em 0;
        }

        /* 空态 */
        .article-empty {
            max-width: 760px;
            margin: 0 auto;
            padding: 70px 40px;
            border: 1px dashed rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            text-align: center;
            background: var(--color-surface);
        }

        .article-empty .empty-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 24px;
            border-radius: 50%;
            background: var(--color-surface-2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            color: var(--color-gold);
        }

        .article-empty p {
            font-size: 1.15rem;
            color: var(--color-muted);
            margin-bottom: 28px;
        }

        .article-empty .btn-primary {
            margin-top: 4px;
        }

        /* 返回入口 */
        .back-navigation {
            max-width: 760px;
            margin: 0 auto;
            padding-top: 44px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            border-top: 1px solid var(--color-line);
            margin-top: 48px;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            background: var(--color-bg-deep);
            padding: 80px 0;
            border-top: 1px solid var(--color-line);
        }

        .section-heading {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-heading h2 {
            font-size: clamp(1.6rem, 3vw, 2.1rem);
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .section-heading h2 i {
            color: var(--color-gold);
            font-size: 0.9em;
        }

        .section-heading p {
            color: var(--color-muted);
            font-size: 0.95rem;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-line);
            transition: all var(--transition);
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
            border-color: rgba(214, 176, 122, 0.3);
        }

        .related-card a {
            display: block;
            height: 100%;
            color: inherit;
        }

        .related-card a:hover {
            color: inherit;
        }

        .related-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--color-bg-deep);
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
        }

        .related-card:hover .related-cover img {
            transform: scale(1.04);
        }

        .related-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(8, 6, 12, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(214, 176, 122, 0.3);
            color: var(--color-gold-light);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }

        .related-body {
            padding: 22px;
        }

        .related-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.55;
            color: var(--color-text);
            margin-bottom: 10px;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card:hover .related-body h3 {
            color: var(--color-gold-light);
        }

        .related-body p {
            font-size: 0.88rem;
            color: var(--color-muted);
            line-height: 1.75;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--color-muted);
            padding-top: 14px;
            border-top: 1px solid var(--color-line);
        }

        .related-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-meta i {
            color: var(--color-gold);
            font-size: 0.9em;
        }

        .read-more {
            color: var(--color-gold);
            font-weight: 500;
            transition: all var(--transition);
        }

        .read-more i {
            transition: transform var(--transition);
        }

        .related-card:hover .read-more i {
            transform: translateX(3px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-deep);
            border-top: 1px solid var(--color-gold);
            padding: 72px 0 32px;
            position: relative;
            z-index: 1;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .logo-text {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--color-gold);
            margin-bottom: 16px;
        }

        .logo-text i {
            color: var(--color-gold);
        }

        .footer-brand p {
            color: var(--color-muted);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--color-gold);
            border-radius: 2px;
        }

        .footer-links,
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            display: inline-block;
            color: var(--color-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            transition: all var(--transition);
        }

        .footer-links a:hover {
            color: var(--color-gold);
            transform: translateX(3px);
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-contact i {
            color: var(--color-gold);
            width: 16px;
            text-align: center;
            font-size: 0.95rem;
        }

        .footer-bottom {
            border-top: 1px solid var(--color-line);
            padding-top: 24px;
            text-align: center;
            color: var(--color-muted);
            font-size: 0.85rem;
        }

        .footer-bottom .domain {
            color: var(--color-gold);
            font-weight: 600;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-menu {
                display: none;
                position: fixed;
                top: 76px;
                left: 16px;
                right: 16px;
                background: rgba(10, 8, 14, 0.97);
                backdrop-filter: blur(24px);
                border-radius: 16px;
                border: 1px solid var(--color-line);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 8px;
                z-index: 999;
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-link {
                border-radius: 10px;
                padding: 12px 16px;
                font-size: 0.95rem;
                text-align: center;
            }

            .nav-link.active {
                background: rgba(214, 176, 122, 0.12);
                border-radius: 10px;
            }

            .nav-link.active::after {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-cta {
                display: none;
            }

            .nav-logo i {
                margin-right: 2px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .article-head {
                padding: 150px 0 52px;
            }

            .article-head .breadcrumb {
                margin-bottom: 28px;
            }

            .article-main {
                padding: 48px 0 40px;
            }

            .article-content {
                font-size: 0.98rem;
                line-height: 1.85;
            }

            .article-content h2 {
                font-size: 1.35rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 560px) {
            .nav-inner {
                padding-left: 16px;
            }

            .nav-logo {
                font-size: 1.08rem;
            }

            .article-title-wrap h1 {
                font-size: 1.6rem;
                line-height: 1.35;
            }

            .article-meta {
                gap: 12px;
                font-size: 0.82rem;
            }

            .meta-divider {
                display: none;
            }

            .back-navigation {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }

            .back-navigation .btn-secondary {
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-title {
                margin-bottom: 14px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }

            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category2 */
:root {
            --color-bg: #0C0910;
            --color-bg-deep: #08060C;
            --color-surface: #14101D;
            --color-surface-2: #1A1525;
            --color-gold: #D6B07A;
            --color-gold-light: #EACDA0;
            --color-text: #F2EDE3;
            --color-muted: #A89F97;
            --color-accent: #A78BFA;
            --color-line: rgba(255, 255, 255, 0.08);
            --color-success: #34D399;
            --radius-card: 16px;
            --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.4);
            --transition: 0.25s cubic-bezier(0.22, 1, 0.36, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            background: rgba(10, 8, 14, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--color-line);
            border-radius: 999px;
            max-width: 1200px;
            width: calc(100% - 32px);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 10px 20px 10px 24px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--color-gold-light);
            white-space: nowrap;
        }
        .nav-logo i {
            color: var(--color-gold);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--color-muted);
            transition: all var(--transition);
        }
        .nav-link:hover {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: var(--color-text);
            background: rgba(214, 176, 122, 0.12);
        }
        .nav-link.active::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-gold);
            margin-right: 6px;
            vertical-align: middle;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #EACDA0, #D6B07A);
            color: #14101D;
            font-weight: 700;
            font-size: 0.875rem;
            padding: 10px 20px;
            border-radius: 999px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            filter: brightness(1.06);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(214, 176, 122, 0.25);
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            color: var(--color-text);
            font-size: 1.125rem;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        @media (max-width: 900px) {
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: 76px;
                left: 16px;
                right: 16px;
                background: rgba(10, 8, 14, 0.95);
                backdrop-filter: blur(20px);
                border: 1px solid var(--color-line);
                border-radius: 20px;
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                opacity: 0;
                visibility: hidden;
                transform: translateY(-10px);
                transition: all var(--transition);
            }
            .nav-menu.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .nav-link {
                text-align: center;
                padding: 14px;
                font-size: 1rem;
                justify-content: center;
            }
            .nav-cta {
                display: none;
            }
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 40vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 130px 24px 80px;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 6, 12, 0.7) 0%, rgba(12, 9, 16, 0.88) 100%);
        }
        .category-hero .hero-inner {
            position: relative;
            z-index: 1;
            max-width: 820px;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(214, 176, 122, 0.12);
            border: 1px solid rgba(214, 176, 122, 0.3);
            color: var(--color-gold-light);
            font-size: 0.75rem;
            letter-spacing: 0.2em;
            padding: 8px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
        }
        .category-hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .category-hero h1 .gold {
            color: var(--color-gold-light);
        }
        .category-hero p {
            color: var(--color-muted);
            font-size: 1.125rem;
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.75;
        }
        .category-hero .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.813rem;
            color: var(--color-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a:hover {
            color: var(--color-gold);
        }
        .breadcrumb .current {
            color: var(--color-gold-light);
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: 96px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-head .overline {
            display: inline-block;
            font-size: 0.75rem;
            letter-spacing: 0.2em;
            color: var(--color-gold);
            margin-bottom: 12px;
            font-weight: 600;
        }
        .section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            line-height: 1.3;
            font-weight: 800;
            letter-spacing: -0.01em;
        }
        .section-head p {
            color: var(--color-muted);
            margin-top: 12px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
            font-size: 1rem;
        }
        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .section-head {
                margin-bottom: 40px;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            transition: all var(--transition);
        }
        .btn:focus-visible {
            outline: 3px solid var(--color-gold);
            outline-offset: 2px;
        }
        .btn:active {
            transform: scale(0.98);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #EACDA0, #D6B07A);
            color: #14101D;
            font-weight: 700;
            font-size: 0.938rem;
            padding: 14px 28px;
            border-radius: 8px;
            box-shadow: 0 4px 14px rgba(214, 176, 122, 0.15);
        }
        .btn-primary:hover {
            filter: brightness(1.08);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(214, 176, 122, 0.3);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(214, 176, 122, 0.5);
            color: var(--color-gold-light);
            font-weight: 600;
            font-size: 0.938rem;
            padding: 14px 28px;
            border-radius: 8px;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.04);
            transform: translateY(-2px);
        }

        /* ===== 游戏卡片 ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .game-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .game-card:hover {
            transform: translateY(-6px);
            border-color: rgba(214, 176, 122, 0.4);
            box-shadow: var(--shadow-card), 0 0 20px rgba(214, 176, 122, 0.08);
        }
        .game-card .cover {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-deep);
        }
        .game-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .game-card:hover .cover img {
            transform: scale(1.03);
        }
        .game-card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .game-card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text);
        }
        .game-card-body p {
            color: var(--color-muted);
            font-size: 0.938rem;
            line-height: 1.75;
            flex: 1;
        }
        .game-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(167, 139, 250, 0.08);
            border: 1px solid rgba(167, 139, 250, 0.2);
            padding: 4px 12px;
            border-radius: 999px;
        }
        .tag-gold {
            color: var(--color-gold);
            background: rgba(214, 176, 122, 0.08);
            border-color: rgba(214, 176, 122, 0.25);
        }

        /* ===== 特色卖点 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-item {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            transition: all var(--transition);
        }
        .feature-item:hover {
            border-color: rgba(214, 176, 122, 0.35);
            transform: translateY(-4px);
        }
        .feature-item .icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(214, 176, 122, 0.1);
            border: 1px solid rgba(214, 176, 122, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--color-gold);
            margin-bottom: 18px;
        }
        .feature-item h3 {
            font-size: 1.063rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .feature-item p {
            font-size: 0.875rem;
            color: var(--color-muted);
            line-height: 1.75;
        }

        /* ===== 适用场景 ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scene-card {
            background: linear-gradient(180deg, var(--color-surface-2), var(--color-surface));
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 36px 28px;
            transition: all var(--transition);
        }
        .scene-card:hover {
            border-color: rgba(214, 176, 122, 0.3);
            transform: translateY(-4px);
        }
        .scene-card .scene-num {
            font-size: 2.5rem;
            font-weight: 900;
            color: rgba(214, 176, 122, 0.18);
            line-height: 1;
            font-variant-numeric: tabular-nums;
        }
        .scene-card h3 {
            font-size: 1.188rem;
            font-weight: 700;
            margin: 12px 0 8px;
            color: var(--color-text);
        }
        .scene-card p {
            color: var(--color-muted);
            font-size: 0.938rem;
            line-height: 1.75;
        }

        /* ===== 流程 ===== */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-item {
            text-align: center;
            padding: 32px 16px;
        }
        .step-item .step-number {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(214, 176, 122, 0.2), rgba(214, 176, 122, 0.05));
            border: 1px solid rgba(214, 176, 122, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--color-gold);
            font-variant-numeric: tabular-nums;
        }
        .step-item h3 {
            font-size: 1.063rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .step-item p {
            font-size: 0.875rem;
            color: var(--color-muted);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color var(--transition), background var(--transition);
        }
        .faq-item.active {
            border-color: rgba(214, 176, 122, 0.4);
            background: var(--color-surface-2);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--color-gold-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid var(--color-line);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-gold);
            font-weight: 600;
            transition: all var(--transition);
            font-size: 1.125rem;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(214, 176, 122, 0.15);
            border-color: var(--color-gold);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--color-muted);
            font-size: 0.938rem;
            line-height: 1.8;
        }

        /* ===== CTA + 表单 ===== */
        .cta-panel {
            position: relative;
            overflow: hidden;
            border-radius: 24px;
            background: var(--color-bg-deep);
            border: 1px solid rgba(214, 176, 122, 0.25);
            padding: 64px;
            text-align: center;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            opacity: 0.15;
        }
        .cta-panel .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-panel h2 {
            font-size: clamp(1.75rem, 3vw, 2.25rem);
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--color-text);
        }
        .cta-panel p {
            color: var(--color-muted);
            margin-bottom: 32px;
            font-size: 1rem;
        }
        .cta-panel .btn-gap {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .contact-section {
            background: var(--color-bg-deep);
        }
        .contact-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .contact-info h2 {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .contact-info p {
            color: var(--color-muted);
            font-size: 1rem;
            line-height: 1.75;
            max-width: 440px;
        }
        .contact-form {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 20px;
            padding: 36px;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-field {
            margin-bottom: 16px;
        }
        .form-field label {
            display: block;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .form-field input,
        .form-field select,
        .form-field textarea {
            width: 100%;
            background: #0D0A13;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 12px 16px;
            font-size: 0.938rem;
            color: var(--color-text);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-field textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-field input:focus,
        .form-field select:focus,
        .form-field textarea:focus {
            outline: none;
            border-color: var(--color-gold);
            box-shadow: 0 0 0 4px rgba(214, 176, 122, 0.15);
        }
        .form-field input::placeholder,
        .form-field textarea::placeholder {
            color: rgba(168, 159, 151, 0.55);
        }
        .form-field select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='%23D6B07A'%3E%3Cpath d='M1 0l5 6 5-6z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 40px;
        }
        .form-submit {
            width: 100%;
            justify-content: center;
            margin-top: 4px;
        }
        .form-privacy {
            text-align: center;
            font-size: 0.813rem;
            color: var(--color-muted);
            margin-top: 16px;
        }
        @media (max-width: 900px) {
            .contact-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .cta-panel {
                padding: 40px 24px;
            }
            .contact-form {
                padding: 24px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            border-top: 1px solid var(--color-gold);
            background: var(--color-bg-deep);
            padding: 64px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand .logo-text {
            font-size: 1.375rem;
            font-weight: 800;
            color: var(--color-gold-light);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }
        .footer-brand .logo-text i {
            color: var(--color-gold);
        }
        .footer-brand p {
            color: var(--color-muted);
            font-size: 0.875rem;
            line-height: 1.75;
            max-width: 280px;
        }
        .footer-title {
            font-size: 0.938rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--color-muted);
            font-size: 0.875rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-gold);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-muted);
            font-size: 0.875rem;
            margin-bottom: 10px;
        }
        .footer-contact i {
            color: var(--color-gold);
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid var(--color-line);
            padding-top: 24px;
            text-align: center;
            color: var(--color-muted);
            font-size: 0.813rem;
        }

        /* ===== 响应式网格 ===== */
        @media (max-width: 1024px) {
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .game-grid,
            .feature-grid,
            .scene-grid,
            .step-grid {
                grid-template-columns: 1fr;
            }
            .scene-grid {
                gap: 16px;
            }
        }
        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 480px) {
            .category-hero {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .game-card-body {
                padding: 20px;
            }
            .feature-item {
                padding: 24px 20px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

/* roulang page: category3 */
:root {
  --color-bg: #0C0910;
  --color-bg-deep: #08060C;
  --color-surface: #14101D;
  --color-surface-2: #1A1525;
  --color-gold: #D6B07A;
  --color-gold-light: #EACDA0;
  --color-text: #F2EDE3;
  --color-muted: #A89F97;
  --color-accent: #A78BFA;
  --color-line: rgba(255,255,255,0.08);
  --color-success: #34D399;
  --radius-card: 16px;
  --radius-btn: 8px;
  --shadow-card: 0 20px 50px rgba(0,0,0,0.4);
  --transition: 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

input, select, textarea {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

@media (min-width: 768px) {
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

section {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

@media (max-width: 768px) {
  section {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }
}

/* ========== Navigation ========== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 1200px;
  z-index: 1000;
  background: rgba(10, 8, 14, 0.72);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(214, 176, 122, 0.12);
  border-radius: 999px;
  padding: 10px 18px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.site-nav.scrolled {
  background: rgba(8, 6, 12, 0.92);
  border-color: rgba(214, 176, 122, 0.22);
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.6);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--color-gold-light);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.nav-logo i {
  color: var(--color-gold);
  font-size: 1.05rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-muted);
  transition: color 0.25s ease, background 0.25s ease;
}

.nav-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--color-text);
  background: rgba(214, 176, 122, 0.14);
}

.nav-link.active::after {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 8px rgba(214, 176, 122, 0.7);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, #EACDA0, #D6B07A);
  color: #1A120B;
  font-size: 0.88rem;
  font-weight: 700;
  white-space: nowrap;
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.nav-cta:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 8px 24px rgba(214, 176, 122, 0.3);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--color-text);
  font-size: 1.2rem;
  border: 1px solid var(--color-line);
  transition: background 0.25s ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
}

@media (max-width: 1024px) {
  .site-nav {
    border-radius: 24px;
    padding: 8px 14px;
  }
  .nav-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(8, 6, 12, 0.97);
    border: 1px solid var(--color-line);
    border-radius: 20px;
    padding: 12px;
    display: none;
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-link {
    justify-content: flex-start;
    padding: 12px 16px;
    border-radius: 12px;
  }
  .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
}

/* ========== Breadcrumb ========== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 18px;
}

.breadcrumb a {
  color: var(--color-gold-light);
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: var(--color-gold);
}

.breadcrumb .separator {
  color: rgba(255, 255, 255, 0.35);
}

/* ========== Hero ========== */
.category-hero {
  position: relative;
  min-height: 62vh;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding-top: 120px;
  padding-bottom: 70px;
  overflow: hidden;
}

.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(8, 6, 12, 0.96) 0%, rgba(12, 9, 16, 0.82) 48%, rgba(12, 9, 16, 0.6) 100%),
    radial-gradient(circle at 80% 20%, rgba(167, 139, 250, 0.12) 0%, transparent 45%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(214, 176, 122, 0.12);
  border: 1px solid rgba(214, 176, 122, 0.28);
  color: var(--color-gold-light);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.category-hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 18px;
}

.category-hero h1 .highlight {
  background: linear-gradient(120deg, var(--color-gold-light), var(--color-gold));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-muted);
  max-width: 640px;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--color-line);
}

.metric-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.metric-item strong {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-gold-light);
  font-variant-numeric: tabular-nums;
}

.metric-item span {
  font-size: 0.82rem;
  color: var(--color-muted);
}

@media (max-width: 768px) {
  .category-hero {
    min-height: auto;
    padding-top: 140px;
    padding-bottom: 50px;
  }
  .hero-metrics {
    gap: 16px;
  }
  .metric-item strong {
    font-size: 1.1rem;
  }
}

/* ========== Section Header ========== */
.section-head {
  max-width: 720px;
  margin-bottom: 52px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(167, 139, 250, 0.1);
  border: 1px solid rgba(167, 139, 250, 0.25);
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 900;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 14px;
}

.section-head p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-muted);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.4;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.btn:focus-visible {
  outline: 3px solid rgba(214, 176, 122, 0.5);
  outline-offset: 3px;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, #EACDA0, #D6B07A);
  color: #1A120B;
  box-shadow: 0 6px 20px rgba(214, 176, 122, 0.22);
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 10px 28px rgba(214, 176, 122, 0.32);
}

.btn-secondary {
  background: transparent;
  color: var(--color-gold-light);
  border: 1.5px solid rgba(214, 176, 122, 0.55);
}

.btn-secondary:hover {
  background: rgba(214, 176, 122, 0.08);
  border-color: var(--color-gold);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

/* ========== Promo Types ========== */
.promo-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
}

@media (min-width: 640px) {
  .promo-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .promo-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.promo-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 30px 26px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.promo-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(214, 176, 122, 0.6), transparent);
  transform: scaleX(0.4);
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.promo-card:hover {
  transform: translateY(-6px);
  border-color: rgba(214, 176, 122, 0.3);
  box-shadow: var(--shadow-card);
}

.promo-card:hover::before {
  opacity: 1;
  transform: scaleX(1);
}

.promo-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--color-gold);
  background: rgba(214, 176, 122, 0.1);
  border: 1px solid rgba(214, 176, 122, 0.22);
  margin-bottom: 18px;
}

.promo-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-text);
}

.promo-card p {
  font-size: 0.92rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.text-link {
  color: var(--color-gold-light);
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.2s ease, letter-spacing 0.2s ease;
}

.text-link:hover {
  color: var(--color-gold);
  letter-spacing: 0.02em;
}

/* ========== Scenario ========== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 28px;
}

@media (min-width: 768px) {
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.scenario-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-line);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.scenario-card:hover {
  transform: translateY(-6px);
  border-color: rgba(214, 176, 122, 0.28);
  box-shadow: var(--shadow-card);
}

.scenario-media {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.scenario-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.scenario-card:hover .scenario-media img {
  transform: scale(1.03);
}

.scenario-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(8, 6, 12, 0.55) 100%);
}

.scenario-body {
  padding: 26px;
}

.scenario-body h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-text);
}

.scenario-body p {
  font-size: 0.93rem;
  color: var(--color-muted);
  line-height: 1.75;
}

.scenario-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-accent);
  background: rgba(167, 139, 250, 0.1);
  border: 1px solid rgba(167, 139, 250, 0.22);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 12px;
}

/* ========== Steps ========== */
.steps-section {
  background: var(--color-bg-deep);
  position: relative;
}

.steps-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 12% 30%, rgba(214, 176, 122, 0.06), transparent 42%), radial-gradient(circle at 85% 70%, rgba(167, 139, 250, 0.05), transparent 45%);
  pointer-events: none;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
  position: relative;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.step-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 30px 26px;
  position: relative;
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.step-card:hover {
  border-color: rgba(214, 176, 122, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.step-num {
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(214, 176, 122, 0.6);
  margin-bottom: 14px;
  font-variant-numeric: tabular-nums;
}

.step-card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-text);
}

.step-card p {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ========== Highlights ========== */
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 28px;
}

@media (min-width: 768px) {
  .highlight-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.highlight-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-line);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.highlight-card:hover {
  transform: translateY(-6px);
  border-color: rgba(214, 176, 122, 0.28);
  box-shadow: var(--shadow-card);
}

.highlight-media {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.highlight-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.highlight-card:hover .highlight-media img {
  transform: scale(1.04);
}

.highlight-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(8, 6, 12, 0.6) 100%);
}

.highlight-body {
  padding: 24px;
}

.highlight-body .highlight-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-gold-light);
  background: rgba(214, 176, 122, 0.1);
  border: 1px solid rgba(214, 176, 122, 0.22);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 12px;
}

.highlight-body h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-text);
}

.highlight-body p {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.faq-item.active {
  border-color: rgba(214, 176, 122, 0.4);
  background: var(--color-surface-2);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 22px;
  text-align: left;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  background: transparent;
  border: none;
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--color-gold-light);
}

.faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--color-gold);
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: rgba(214, 176, 122, 0.1);
  border-color: var(--color-gold);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 22px;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 22px 20px;
}

.faq-answer p {
  font-size: 0.93rem;
  color: var(--color-muted);
  line-height: 1.75;
  padding-top: 2px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* ========== CTA / Form ========== */
.cta-section {
  background: var(--color-bg-deep);
  position: relative;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 75% 20%, rgba(214, 176, 122, 0.1), transparent 50%), radial-gradient(circle at 20% 80%, rgba(167, 139, 250, 0.06), transparent 40%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.cta-card {
  background: var(--color-surface);
  border: 1px solid rgba(214, 176, 122, 0.2);
  border-radius: 24px;
  padding: 50px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 900px) {
  .cta-card {
    grid-template-columns: 1fr 1fr;
    gap: 50px;
  }
}

.cta-info .section-tag {
  margin-bottom: 14px;
}

.cta-info h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 14px;
}

.cta-info p {
  color: var(--color-muted);
  font-size: 0.96rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.cta-points {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cta-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.93rem;
  color: var(--color-text);
}

.cta-points li i {
  color: var(--color-gold);
}

.contact-form {
  background: rgba(8, 6, 12, 0.5);
  border: 1px solid var(--color-line);
  border-radius: 20px;
  padding: 30px;
}

.form-row {
  margin-bottom: 16px;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  background: #0D0A13;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 0.92rem;
  color: var(--color-text);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: rgba(214, 176, 122, 0.6);
  box-shadow: 0 0 0 4px rgba(214, 176, 122, 0.12);
}

.form-row select option {
  background: #14101D;
  color: var(--color-text);
}

.form-privacy {
  font-size: 0.78rem;
  color: var(--color-muted);
  text-align: center;
  margin-top: 12px;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--color-bg-deep);
  border-top: 1px solid rgba(214, 176, 122, 0.35);
  padding-top: 70px;
  padding-bottom: 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 36px;
  margin-bottom: 50px;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
  }
}

.footer-brand .logo-text {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--color-gold-light);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .logo-text i {
  color: var(--color-gold);
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.8;
  max-width: 320px;
}

.footer-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--color-gold);
  border-radius: 2px;
}

.footer-links,
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a,
.footer-contact li {
  font-size: 0.9rem;
  color: var(--color-muted);
  transition: color 0.2s ease, padding-left 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-links a:hover {
  color: var(--color-gold-light);
  padding-left: 4px;
}

.footer-contact li i {
  color: var(--color-gold);
  width: 18px;
}

.footer-bottom {
  border-top: 1px solid var(--color-line);
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-muted);
}

.footer-bottom .domain {
  color: var(--color-muted);
}

/* ========== Responsive ========== */
@media (max-width: 640px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .cta-card {
    padding: 28px 20px;
  }
  .contact-form {
    padding: 20px;
  }
  .scenario-media {
    height: 160px;
  }
  .highlight-media {
    height: 150px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* roulang page: category4 */
/* ========== Design System ========== */
  :root {
    --color-bg: #0C0910;
    --color-bg-deep: #08060C;
    --color-surface: #14101D;
    --color-surface-2: #1A1525;
    --color-gold: #D6B07A;
    --color-gold-light: #EACDA0;
    --color-text: #F2EDE3;
    --color-muted: #A89F97;
    --color-accent: #A78BFA;
    --color-line: rgba(255,255,255,0.08);
    --color-success: #34D399;
    --radius-card: 16px;
    --radius-btn: 8px;
    --radius-input: 10px;
    --shadow-card: 0 20px 50px rgba(0,0,0,0.4);
    --shadow-gold: 0 12px 36px rgba(214,176,122,0.18);
    --transition-default: 0.25s cubic-bezier(0.22, 1, 0.36, 1);
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img { max-width: 100%; height: auto; display: block; }
  a { color: inherit; text-decoration: none; transition: color 0.25s ease; }
  button { font-family: inherit; cursor: pointer; }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  @media (min-width: 768px) {
    .container { padding-left: 2rem; padding-right: 2rem; }
  }

  .text-gold { color: var(--color-gold); }
  .text-gold-light { color: var(--color-gold-light); }
  .text-muted { color: var(--color-muted); }
  .text-accent { color: var(--color-accent); }
  .text-gold-gradient {
    background: linear-gradient(135deg, #EACDA0, #D6B07A);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
  }

  .section { padding: 64px 0; position: relative; }
  @media (min-width: 768px) { .section { padding: 96px 0; } }

  .section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
  .section-head .eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase;
    color: var(--color-gold); margin-bottom: 12px; font-weight: 600;
  }
  .section-head .eyebrow::before,
  .section-head .eyebrow::after {
    content: ''; height: 1px; width: 28px;
    background: linear-gradient(90deg, transparent, var(--color-gold));
  }
  .section-head .eyebrow::after {
    background: linear-gradient(90deg, var(--color-gold), transparent);
  }
  .section-head h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: 12px;
  }
  .section-head p { color: var(--color-muted); font-size: 1rem; line-height: 1.75; }
  @media (min-width: 768px) { .section-head { margin-bottom: 64px; } }

  /* ========== Buttons ========== */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-btn);
    font-weight: 700; font-size: 1rem; line-height: 1;
    text-decoration: none;
    transition: all var(--transition-default);
    border: none; cursor: pointer;
    white-space: nowrap;
  }
  .btn-primary {
    background: linear-gradient(135deg, #EACDA0, #D6B07A);
    color: #14101D;
  }
  .btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: var(--shadow-gold);
  }
  .btn-primary:active { transform: scale(0.98); }
  .btn-secondary {
    background: transparent;
    border: 1px solid var(--color-gold);
    color: var(--color-gold);
  }
  .btn-secondary:hover { background: rgba(255,255,255,0.04); transform: translateY(-1px); }
  .btn-secondary:active { transform: scale(0.98); }
  .btn-ghost { background: transparent; border: none; color: var(--color-gold); padding: 0.5rem 0.75rem; }
  .btn-ghost i { transition: transform 0.25s ease; }
  .btn-ghost:hover i { transform: translateX(4px); }
  .btn:focus-visible, .nav-link:focus-visible, .nav-toggle:focus-visible, .faq-question:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
  }

  /* ========== Navigation ========== */
  .site-nav {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    background: rgba(10,8,14,0.78);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--color-line);
    border-radius: 999px;
    padding: 0.4rem 0.75rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    transition: background 0.3s ease, box-shadow 0.3s ease;
    max-width: calc(100vw - 32px);
  }
  .site-nav.scrolled {
    background: rgba(8,6,12,0.92);
    box-shadow: 0 12px 40px rgba(0,0,0,0.6);
  }
  .nav-inner {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: nowrap;
  }
  .nav-logo {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 1.15rem; font-weight: 800; letter-spacing: -0.01em;
    color: var(--color-text);
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    white-space: nowrap;
  }
  .nav-logo i { color: var(--color-gold); font-size: 1rem; }
  .nav-logo:hover { color: var(--color-gold-light); }
  .nav-menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: nowrap;
  }
  .nav-link {
    display: inline-flex; align-items: center; flex-direction: column; justify-content: center;
    font-size: 0.875rem; font-weight: 500;
    color: var(--color-muted);
    padding: 0.45rem 0.85rem;
    border-radius: 999px;
    transition: color 0.25s ease, background 0.25s ease;
    white-space: nowrap;
    line-height: 1.2;
  }
  .nav-link:hover { color: var(--color-text); background: rgba(255,255,255,0.04); }
  .nav-link.active { color: #ffffff; font-weight: 600; }
  .nav-link.active::after {
    content: '';
    display: block;
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--color-gold);
    margin-top: 3px;
  }
  .nav-cta {
    display: inline-flex; align-items: center; gap: 0.375rem;
    background: linear-gradient(135deg, #EACDA0, #D6B07A);
    color: #14101D;
    font-size: 0.875rem; font-weight: 700;
    padding: 0.5rem 1.1rem;
    border-radius: 999px;
    transition: all var(--transition-default);
    white-space: nowrap;
    border: none; cursor: pointer;
  }
  .nav-cta:hover { filter: brightness(1.1); transform: translateY(-1px); box-shadow: var(--shadow-gold); }
  .nav-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-size: 1.35rem;
    padding: 0.4rem 0.6rem;
    border-radius: 8px;
    line-height: 1;
  }
  .nav-toggle:hover { color: var(--color-gold); }

  /* Mobile nav */
  @media (max-width: 1023px) {
    .site-nav { padding: 0.4rem 0.75rem; }
    .nav-logo { font-size: 1rem; padding: 0.3rem 0.5rem; }
    .nav-link { padding: 0.4rem 0.6rem; font-size: 0.8rem; }
    .nav-cta { display: none; }
    .nav-toggle { display: inline-flex; }
    .nav-menu {
      display: none;
      position: absolute;
      top: calc(100% + 12px);
      left: 0; right: 0;
      background: rgba(10,8,14,0.97);
      border: 1px solid var(--color-line);
      border-radius: 16px;
      padding: 0.75rem;
      flex-direction: column;
      align-items: stretch;
      gap: 0.25rem;
      box-shadow: 0 20px 60px rgba(0,0,0,0.6);
    }
    .nav-menu.open { display: flex; }
    .nav-link {
      justify-content: flex-start;
      padding: 0.7rem 1rem;
      font-size: 0.95rem;
      border-radius: 10px;
    }
    .nav-link.active::after {
      margin-left: 8px;
      width: 6px; height: 6px;
    }
  }

  /* ========== Page Hero ========== */
  .page-hero {
    position: relative;
    min-height: 320px;
    height: 40vh;
    max-height: 420px;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }
  .page-hero-overlay {
    position: absolute;
    inset: 0;
    background:
      linear-gradient(180deg, rgba(8,6,12,0.62) 0%, rgba(12,9,16,0.74) 100%),
      linear-gradient(90deg, rgba(8,6,12,0.5) 0%, transparent 40%, transparent 60%, rgba(8,6,12,0.5) 100%);
    z-index: 1;
  }
  .page-hero::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 120px;
    background: linear-gradient(180deg, transparent, var(--color-bg));
    z-index: 2;
    pointer-events: none;
  }
  .page-hero-content {
    position: relative;
    z-index: 3;
    width: 100%;
    padding-top: 1.5rem;
    padding-bottom: 2rem;
  }
  .breadcrumb {
    display: flex; align-items: center; flex-wrap: wrap; gap: 0.4rem;
    font-size: 0.85rem; color: var(--color-muted);
    margin-bottom: 18px;
  }
  .breadcrumb a { color: var(--color-gold); }
  .breadcrumb a:hover { color: var(--color-gold-light); }
  .breadcrumb span { color: var(--color-muted); }
  .page-hero h1 {
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
    color: var(--color-text);
  }
  .page-hero .hero-desc {
    font-size: 1rem;
    color: #c8c1ba;
    max-width: 640px;
    line-height: 1.75;
    margin-bottom: 20px;
  }
  .hero-tags { display: flex; flex-wrap: wrap; gap: 8px; }
  .hero-tags .tag {
    display: inline-flex; align-items: center; gap: 5px;
    background: rgba(214,176,122,0.08);
    border: 1px solid rgba(214,176,122,0.25);
    color: var(--color-gold-light);
    font-size: 0.75rem;
    padding: 4px 12px;
    border-radius: 999px;
    font-weight: 500;
  }

  /* ========== Cards ========== */
  .card {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    transition: transform var(--transition-default), box-shadow var(--transition-default), border-color var(--transition-default);
  }
  .card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(214,176,122,0.15);
    border-color: rgba(214,176,122,0.25);
  }

  .feature-card { padding: 2rem 1.75rem; position: relative; overflow: hidden; }
  .feature-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
  }
  .feature-card:hover::before { opacity: 1; }
  .feature-icon {
    width: 52px; height: 52px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(214,176,122,0.18), rgba(167,139,250,0.1));
    border: 1px solid rgba(214,176,122,0.3);
    color: var(--color-gold-light);
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
  }
  .feature-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; }
  .feature-card p { font-size: 0.95rem; color: var(--color-muted); line-height: 1.7; }

  /* ========== Steps ========== */
  .steps-section { background: var(--color-bg-deep); }
  .steps-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; position: relative; }
  @media (min-width: 768px) { .steps-grid { grid-template-columns: repeat(4, 1fr); } }
  .step-item { position: relative; padding: 2rem 1.5rem; background: var(--color-surface); border-radius: 16px; border: 1px solid var(--color-line); transition: all var(--transition-default); }
  .step-item:hover { transform: translateY(-4px); border-color: rgba(214,176,122,0.3); box-shadow: var(--shadow-card); }
  .step-num {
    font-size: 2.5rem; font-weight: 900;
    background: linear-gradient(135deg, rgba(214,176,122,0.6), rgba(214,176,122,0.1));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1; margin-bottom: 14px;
    font-variant-numeric: tabular-nums;
  }
  .step-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px;
    background: rgba(214,176,122,0.1);
    border: 1px solid rgba(214,176,122,0.25);
    color: var(--color-gold);
    border-radius: 10px; font-size: 0.95rem;
    margin-bottom: 14px;
  }
  .step-item h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
  .step-item p { font-size: 0.88rem; color: var(--color-muted); line-height: 1.65; }
  .step-line { display: none; }
  @media (min-width: 768px) {
    .step-line {
      display: block;
      position: absolute;
      top: 50%;
      left: calc(25% - 1px);
      width: calc(50% + 2px);
      height: 1px;
      background: linear-gradient(90deg, rgba(214,176,122,0.5), rgba(214,176,122,0.1));
      z-index: 0;
    }
  }

  /* ========== Scenarios ========== */
  .scenario-card { padding: 2rem; display: flex; flex-direction: column; height: 100%; }
  .scenario-icon {
    width: 48px; height: 48px; border-radius: 50%;
    background: rgba(167,139,250,0.1);
    border: 1px solid rgba(167,139,250,0.25);
    display: flex; align-items: center; justify-content: center;
    color: var(--color-accent); font-size: 1.1rem;
    margin-bottom: 1rem;
  }
  .scenario-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
  .scenario-card p { font-size: 0.9rem; color: var(--color-muted); line-height: 1.7; }

  /* ========== Highlights ========== */
  .highlights-section { background: var(--color-bg-deep); position: relative; }
  .highlight-image {
    border-radius: var(--radius-card);
    overflow: hidden; position: relative;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-line);
  }
  .highlight-image img { width: 100%; height: 100%; object-fit: cover; min-height: 280px; transition: transform 0.5s ease; }
  .highlight-image:hover img { transform: scale(1.03); }
  .highlight-list { display: flex; flex-direction: column; gap: 1.25rem; margin-top: 1.5rem; }
  @media (min-width: 768px) { .highlight-list { margin-top: 0; } }
  .highlight-item {
    display: flex; gap: 0.9rem; align-items: flex-start;
    padding: 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: 14px;
    transition: border-color 0.25s ease, background 0.25s ease;
  }
  .highlight-item:hover { border-color: rgba(214,176,122,0.35); background: var(--color-surface-2); }
  .highlight-item i {
    color: var(--color-gold); font-size: 1rem; margin-top: 4px;
    width: 24px; text-align: center;
  }
  .highlight-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
  .highlight-item p { font-size: 0.88rem; color: var(--color-muted); line-height: 1.6; }

  /* ========== FAQ ========== */
  .faq-wrap { max-width: 760px; margin: 0 auto; }
  .faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: 14px;
    margin-bottom: 0.75rem;
    overflow: hidden;
    transition: border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
  }
  .faq-item.active {
    border-color: rgba(214,176,122,0.4);
    background: var(--color-surface-2);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  }
  .faq-question {
    width: 100%;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    padding: 1.25rem 1.5rem;
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
    transition: color 0.25s ease;
  }
  .faq-question:hover { color: var(--color-gold-light); }
  .faq-icon {
    flex-shrink: 0;
    width: 26px; height: 26px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: rgba(214,176,122,0.12);
    border: 1px solid rgba(214,176,122,0.25);
    color: var(--color-gold);
    transition: transform 0.3s ease, background 0.3s ease;
    font-style: normal;
    font-size: 0.9rem;
  }
  .faq-item.active .faq-icon { transform: rotate(45deg); background: rgba(214,176,122,0.2); }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 1.5rem;
    color: var(--color-muted);
    font-size: 0.88rem;
    line-height: 1.75;
  }
  .faq-item.active .faq-answer {
    max-height: 400px;
    padding-bottom: 1.25rem;
  }

  /* ========== CTA / Contact ========== */
  .cta-section { position: relative; overflow: hidden; }
  .cta-section::before {
    content: '';
    position: absolute;
    top: -100px; left: 50%; transform: translateX(-50%);
    width: 700px; height: 360px;
    background: radial-gradient(ellipse, rgba(214,176,122,0.12), transparent 70%);
    pointer-events: none;
  }
  .contact-wrap {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-card);
    max-width: 480px;
    margin: 0 auto;
  }
  @media (min-width: 768px) {
    .contact-wrap { padding: 2.5rem; }
  }
  .contact-wrap h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
  .contact-wrap > p { font-size: 0.9rem; color: var(--color-muted); margin-bottom: 1.5rem; }
  .form-group { margin-bottom: 1rem; }
  .form-group label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 6px; color: var(--color-text); }
  .form-group .required { color: var(--color-gold); }
  .form-group input,
  .form-group select,
  .form-group textarea {
    width: 100%;
    background: #0D0A13;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-input);
    padding: 12px 16px;
    font-size: 0.9rem;
    color: var(--color-text);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    outline: none;
    font-family: inherit;
  }
  .form-group input:focus,
  .form-group select:focus,
  .form-group textarea:focus {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 4px rgba(214,176,122,0.15);
  }
  .form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%23D6B07A' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
  }
  .form-group textarea { min-height: 80px; resize: vertical; }
  .form-group select option { background: var(--color-surface); color: var(--color-text); }
  .privacy-note { font-size: 0.75rem; color: var(--color-muted); text-align: center; margin-top: 12px; }
  .contact-left { max-width: 480px; }
  .contact-left h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
  .contact-left p { color: var(--color-muted); font-size: 1rem; line-height: 1.75; margin-bottom: 1.5rem; }
  .contact-points { list-style: none; margin-top: 1.5rem; }
  .contact-points li { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; font-size: 0.95rem; color: #c8c1ba; }
  .contact-points li i { color: var(--color-gold); width: 18px; text-align: center; font-size: 0.9rem; }

  /* ========== Footer ========== */
  .site-footer {
    background: var(--color-bg-deep);
    border-top: 1px solid var(--color-gold);
    padding-top: 56px;
    padding-bottom: 24px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2.5rem;
  }
  @media (min-width: 640px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
  @media (min-width: 1024px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; } }
  .footer-brand .logo-text {
    display: flex; align-items: center; gap: 8px;
    font-size: 1.25rem; font-weight: 800;
    color: var(--color-text);
    margin-bottom: 12px;
  }
  .footer-brand .logo-text i { color: var(--color-gold); }
  .footer-brand p { font-size: 0.85rem; color: var(--color-muted); line-height: 1.7; max-width: 260px; }
  .footer-title { font-size: 0.8rem; font-weight: 700; color: var(--color-text); letter-spacing: 0.08em; margin-bottom: 16px; text-transform: uppercase; }
  .footer-links { list-style: none; }
  .footer-links li { margin-bottom: 8px; }
  .footer-links a { font-size: 0.88rem; color: var(--color-muted); transition: color 0.25s ease, padding-left 0.25s ease; }
  .footer-links a:hover { color: var(--color-gold); padding-left: 4px; }
  .footer-contact { list-style: none; }
  .footer-contact li { display: flex; align-items: center; gap: 10px; font-size: 0.88rem; color: var(--color-muted); margin-bottom: 10px; }
  .footer-contact li i { color: var(--color-gold); width: 16px; }
  .footer-bottom {
    border-top: 1px solid var(--color-line);
    padding-top: 20px;
    text-align: center;
    font-size: 0.78rem;
    color: var(--color-muted);
  }
  .footer-bottom .domain { color: var(--color-gold); }

  /* ========== Misc ========== */
  .divider-gold {
    width: 64px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
    margin: 16px auto 0;
  }
  .badge {
    display: inline-flex; align-items: center; gap: 6px;
    background: rgba(214,176,122,0.1);
    border: 1px solid rgba(214,176,122,0.25);
    color: var(--color-gold-light);
    font-size: 0.75rem;
    padding: 4px 12px;
    border-radius: 999px;
    font-weight: 500;
  }
  .bg-noise-pattern {
    background-image: radial-gradient(rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 24px 24px;
  }

  @media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; scroll-behavior: auto; }
    .card:hover, .feature-card:hover, .step-item:hover { transform: none; }
  }