/* roulang page: index */
:root {
  --color-bg: #F7F4EF;
  --color-surface: #FFFFFF;
  --color-primary: #123A3B;
  --color-accent: #F27D52;
  --color-success: #2A9D8F;
  --color-muted: #6B7280;
  --color-line: #E5E7EB;
  --color-footer: #0D2C2D;
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
  --shadow-sm: 0 4px 12px rgba(18, 58, 59, 0.06);
  --shadow-md: 0 14px 32px rgba(18, 58, 59, 0.10);
  --shadow-lg: 0 24px 60px rgba(18, 58, 59, 0.14);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--color-bg);
  color: var(--color-primary);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font-family: inherit; }
.container-xl {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- 悬浮胶囊导航 ---- */
.nav-fixed {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: calc(100% - 32px);
  max-width: 1160px;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 8px 32px rgba(18, 58, 59, 0.10);
  padding: 8px 12px 8px 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 18px;
  color: var(--color-primary);
  white-space: nowrap;
}
.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #F2A65A);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  flex-shrink: 0;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  transition: color 0.25s, background 0.25s;
}
.nav-link:hover {
  color: var(--color-accent);
  background: rgba(242, 125, 82, 0.08);
}
.nav-link.active {
  background: var(--color-accent);
  color: #fff;
}
.nav-cta {
  padding: 10px 24px;
  border-radius: 999px;
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  transition: filter 0.25s, transform 0.2s;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.nav-cta:hover { filter: brightness(0.92); }
.nav-cta:active { transform: scale(0.96); }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary);
  color: #fff;
  font-size: 15px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
  transition: all 0.25s;
  border: none;
  cursor: pointer;
}
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover {
  filter: brightness(0.92);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(242, 125, 82, 0.3);
}
.btn-primary:active { transform: scale(0.97); }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, 0.7); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; transform: translateY(-2px); }
.btn-dark { background: var(--color-primary); color: #fff; }
.btn-dark:hover { opacity: 0.88; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--color-primary); }
.btn-white:hover { background: var(--color-bg); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15); }

/* ---- Hero ---- */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  position: relative;
  background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  border-radius: 0 0 36px 36px;
  padding: 140px 24px 100px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(18, 58, 59, 0.90), rgba(18, 58, 59, 0.50) 65%, rgba(18, 58, 59, 0.25));
  border-radius: inherit;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  color: #fff;
}
.hero-kicker {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: 1px;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero h1 {
  font-size: 2.6rem;
  line-height: 1.25;
  font-weight: 900;
  margin-bottom: 16px;
}
.hero h1 .highlight {
  color: var(--color-accent);
  position: relative;
}
.hero-sub {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255, 255, 255, 0.75);
  font-size: 18px;
  animation: floatDown 2.2s ease-in-out infinite;
}
@keyframes floatDown {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.6; }
  50% { transform: translate(-50%, 8px); opacity: 1; }
}

/* ---- 统计指标 ---- */
.metrics-band {
  position: relative;
  z-index: 5;
  margin-top: -56px;
  padding: 0 24px;
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.metric-item {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 30px 16px;
  text-align: center;
  box-shadow: 0 18px 40px rgba(18, 58, 59, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.7);
  transition: transform 0.3s, box-shadow 0.3s;
}
.metric-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.metric-num { font-size: 40px; font-weight: 900; color: var(--color-primary); }
.metric-label { color: var(--color-muted); font-size: 14px; margin-top: 4px; }

/* ---- 板块通用 ---- */
.section-block { padding: 80px 0; }
.section-head {
  margin-bottom: 48px;
  max-width: 560px;
}
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-title { font-size: 2rem; font-weight: 800; line-height: 1.3; color: var(--color-primary); }
.section-title .accent { color: var(--color-accent); }
.section-sub { color: var(--color-muted); margin-top: 10px; font-size: 15px; }

/* ---- 卡片 ---- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover { box-shadow: var(--shadow-md); }

/* ---- 目录 ---- */
.catalog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.catalog-item {
  display: flex;
  gap: 24px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-accent);
  transition: transform 0.3s, box-shadow 0.3s;
}
.catalog-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.catalog-num { font-size: 44px; font-weight: 900; color: var(--color-accent); line-height: 1; flex-shrink: 0; letter-spacing: -1px; }
.catalog-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--color-primary); }
.catalog-body p { color: var(--color-muted); font-size: 14px; line-height: 1.8; }

/* ---- 精选内容 ---- */
.feature-wrap {
  display: flex;
  align-items: stretch;
  gap: 32px;
  background: var(--color-surface);
  border-radius: 28px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.feature-img { flex: 1; border-radius: 20px; overflow: hidden; }
.feature-img img { width: 100%; height: 100%; object-fit: cover; min-height: 340px; transition: transform 0.5s; }
.feature-img:hover img { transform: scale(1.03); }
.feature-list { flex: 1; display: flex; flex-direction: column; justify-content: center; padding: 8px 8px 8px 16px; }
.feature-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-line);
  transition: color 0.25s;
}
.feature-item:last-child { border-bottom: none; }
.feature-item .icon-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(42, 157, 143, 0.12);
  color: var(--color-success);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.feature-item h4 { font-size: 16px; font-weight: 600; color: var(--color-primary); margin-bottom: 4px; transition: color 0.25s; }
.feature-item p { font-size: 13px; color: var(--color-muted); }
.feature-item:hover h4 { color: var(--color-accent); }

/* ---- 动态列表 ---- */
.dynamic-panel {
  background: var(--color-surface);
  border-radius: 28px;
  padding: 36px 36px 20px;
  box-shadow: var(--shadow-sm);
}
.dynamic-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--color-line);
  transition: background 0.2s;
}
.dynamic-item:last-child { border-bottom: none; }
.dyn-link { display: block; }
.dyn-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.dyn-cat {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 999px;
  background: rgba(242, 125, 82, 0.12);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 600;
}
.dyn-time { font-size: 12px; color: var(--color-muted); }
.dyn-title { font-size: 16px; font-weight: 600; color: var(--color-primary); transition: color 0.2s; margin-bottom: 4px; }
.dyn-excerpt {
  font-size: 14px;
  color: var(--color-muted);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.dyn-more { font-size: 13px; color: var(--color-accent); font-weight: 600; display: inline-block; transition: transform 0.25s; margin-top: 6px; }
.dynamic-item:hover .dyn-title { color: var(--color-accent); }
.dynamic-item:hover .dyn-more { transform: translateX(5px); }
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  border: 2px dashed var(--color-line);
  border-radius: 20px;
  color: var(--color-muted);
  text-align: center;
}
.empty-state i { font-size: 32px; margin-bottom: 12px; opacity: 0.5; }

/* ---- 延伸阅读 ---- */
.recommend-scroll {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  padding: 8px 4px 28px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.recommend-scroll::-webkit-scrollbar { height: 6px; }
.recommend-scroll::-webkit-scrollbar-thumb { background: var(--color-line); border-radius: 99px; }
.recommend-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  background: var(--color-surface);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s, box-shadow 0.3s;
}
.recommend-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.recommend-card .rc-img { height: 180px; overflow: hidden; }
.recommend-card .rc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.recommend-card:hover .rc-img img { transform: scale(1.05); }
.rc-body { padding: 20px; }
.rc-tag { font-size: 11px; font-weight: 600; color: var(--color-accent); background: rgba(242, 125, 82, 0.1); padding: 3px 10px; border-radius: 99px; display: inline-block; }
.rc-title { font-size: 16px; font-weight: 700; margin: 8px 0 6px; color: var(--color-primary); }
.rc-desc { font-size: 13px; color: var(--color-muted); }
.rc-link { font-size: 13px; font-weight: 600; color: var(--color-accent); display: inline-flex; align-items: center; gap: 6px; margin-top: 10px; transition: gap 0.25s; }
.recommend-card:hover .rc-link { gap: 10px; }

/* ---- FAQ ---- */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-line); }
.faq-item:first-child { border-top: 1px solid var(--color-line); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  color: var(--color-primary);
  transition: color 0.2s;
  gap: 16px;
}
.faq-q:hover { color: var(--color-accent); }
.faq-q i { transition: transform 0.3s; color: var(--color-muted); font-size: 14px; flex-shrink: 0; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 20px;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.9;
}
.faq-item.open .faq-a { max-height: 500px; padding-bottom: 22px; }
.faq-item.open .faq-q i { transform: rotate(180deg); color: var(--color-accent); }

/* ---- CTA ---- */
.cta-section { padding: 40px 0 80px; }
.cta-band {
  background: var(--color-primary);
  border-radius: 32px;
  padding: 64px 56px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -20px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(242, 125, 82, 0.15);
}
.cta-band::after {
  content: '';
  position: absolute;
  bottom: -70px;
  left: 30%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(42, 157, 143, 0.12);
}
.cta-band .cta-content { position: relative; z-index: 2; color: #fff; max-width: 560px; }
.cta-band h2 { font-size: 1.8rem; font-weight: 800; margin-bottom: 12px; }
.cta-band p { color: rgba(255, 255, 255, 0.85); font-size: 15px; }
.cta-actions { position: relative; z-index: 2; display: flex; gap: 16px; flex-wrap: wrap; }

/* ---- 页脚 ---- */
.site-footer {
  background: var(--color-footer);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 32px;
  border-top: 4px solid var(--color-accent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand { font-size: 20px; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.footer-desc { font-size: 14px; line-height: 1.9; color: rgba(255, 255, 255, 0.65); max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.footer-link {
  display: block;
  padding: 5px 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  transition: color 0.2s, padding-left 0.2s;
}
.footer-link:hover { color: #fff; padding-left: 6px; }
.footer-contact { display: flex; align-items: center; gap: 10px; padding: 6px 0; font-size: 14px; color: rgba(255, 255, 255, 0.7); }
.footer-contact i { color: var(--color-accent); width: 18px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  flex-wrap: wrap;
  gap: 8px;
}

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-wrap { flex-direction: column; }
  .feature-img img { min-height: 240px; }
  .catalog-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    border-radius: 24px;
    padding: 12px;
    box-shadow: 0 24px 60px rgba(18, 58, 59, 0.16);
    border: 1px solid var(--color-line);
  }
  .nav-menu.open { display: flex; }
  .nav-link { padding: 12px 18px; }
  .hero { padding: 110px 20px 80px; min-height: 76vh; }
  .hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 0.95rem; }
  .section-block { padding: 56px 0; }
  .section-title { font-size: 1.6rem; }
  .catalog-item { padding: 24px; gap: 16px; }
  .catalog-num { font-size: 36px; }
  .dynamic-panel { padding: 24px 20px 12px; }
  .cta-band { padding: 40px 24px; flex-direction: column; align-items: flex-start; }
  .cta-band h2 { font-size: 1.4rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .metrics-band { margin-top: -48px; }
  .metrics-grid { gap: 16px; }
  .metric-item { padding: 20px 12px; }
  .metric-num { font-size: 32px; }
}
@media (max-width: 520px) {
  .container-xl { padding: 0 16px; }
  .nav-inner { padding: 6px 8px 6px 16px; }
  .brand { font-size: 15px; }
  .brand-logo { width: 30px; height: 30px; font-size: 14px; }
  .hero h1 { font-size: 1.7rem; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .metric-item { padding: 16px 8px; }
  .metric-num { font-size: 28px; }
  .recommend-card { flex: 0 0 260px; }
  .catalog-item { flex-direction: column; }
  .feature-item { gap: 12px; }
  .cta-actions .btn { width: 100%; justify-content: center; }
}

/* roulang page: category1 */
:root {
        --color-bg: #F7F4EF;
        --color-surface: #FFFFFF;
        --color-primary: #123A3B;
        --color-primary-deep: #0D2C2D;
        --color-accent: #F27D52;
        --color-accent-light: #F2A65A;
        --color-success: #2A9D8F;
        --color-muted: #6B7280;
        --color-line: #E5E7EB;
        --radius-card: 1.25rem;
        --radius-large: 1.75rem;
        --radius-pill: 999px;
        --shadow-sm: 0 4px 16px rgba(18, 58, 59, 0.08);
        --shadow-md: 0 12px 32px rgba(18, 58, 59, 0.12);
        --transition: 0.25s ease;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        background-color: var(--color-bg);
        color: var(--color-primary);
        line-height: 1.8;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }

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

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

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

    button {
        cursor: pointer;
        border: none;
        background: none;
    }

    h1,
    h2,
    h3,
    h4 {
        margin: 0;
        line-height: 1.3;
    }

    .container-xl {
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .section {
        padding: 4rem 1.5rem;
    }

    .section-label {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.875rem;
        font-weight: 600;
        letter-spacing: 0.12em;
        color: var(--color-accent);
        background: rgba(242, 125, 82, 0.12);
        padding: 0.35rem 1rem;
        border-radius: var(--radius-pill);
        margin-bottom: 1rem;
    }

    .section-title {
        font-size: 2rem;
        font-weight: 800;
        line-height: 1.3;
        letter-spacing: -0.02em;
        margin-bottom: 1.25rem;
    }

    .section-subtitle {
        color: var(--color-muted);
        font-size: 1.0625rem;
        max-width: 720px;
        line-height: 1.9;
    }

    /* ======= 悬浮胶囊导航 ======= */
    .nav-fixed {
        position: fixed;
        top: 1rem;
        left: 50%;
        transform: translateX(-50%);
        z-index: 9999;
        width: calc(100% - 2rem);
        max-width: 1060px;
        background: rgba(255, 255, 255, 0.82);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-radius: var(--radius-pill);
        border: 1px solid rgba(255, 255, 255, 0.65);
        box-shadow: var(--shadow-md);
    }

    .nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.65rem 1rem 0.65rem 1.4rem;
    }

    .brand {
        display: inline-flex;
        align-items: center;
        gap: 0.6rem;
        font-weight: 800;
        font-size: 1.05rem;
        color: var(--color-primary);
        white-space: nowrap;
    }

    .brand-logo {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
        color: #fff;
        border-radius: 50%;
        font-size: 1rem;
        box-shadow: 0 4px 12px rgba(242, 125, 82, 0.35);
    }

    .nav-menu {
        display: flex;
        align-items: center;
        gap: 0.35rem;
    }

    .nav-link {
        display: inline-block;
        padding: 0.5rem 1rem;
        border-radius: var(--radius-pill);
        font-size: 0.925rem;
        font-weight: 500;
        color: var(--color-primary);
        transition: all var(--transition);
        position: relative;
    }

    .nav-link:hover {
        color: var(--color-accent);
        background: rgba(242, 125, 82, 0.08);
    }

    .nav-link.active {
        background: var(--color-accent);
        color: #fff;
        font-weight: 600;
        box-shadow: 0 6px 16px rgba(242, 125, 82, 0.32);
    }

    .nav-cta {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        padding: 0.5rem 1.4rem;
        border-radius: var(--radius-pill);
        font-size: 0.925rem;
        font-weight: 600;
        color: #fff;
        background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
        box-shadow: 0 6px 18px rgba(242, 125, 82, 0.35);
        transition: all var(--transition);
    }

    .nav-cta:hover {
        filter: brightness(0.95);
        transform: translateY(-1px);
        box-shadow: 0 8px 22px rgba(242, 125, 82, 0.42);
    }

    .nav-cta:active {
        transform: scale(0.96);
    }

    .nav-toggle {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: 50%;
        background: var(--color-primary);
        color: #fff;
        font-size: 1.1rem;
        align-items: center;
        justify-content: center;
    }

    /* ======= 分类 Hero ======= */
    .hero-category {
        position: relative;
        min-height: 72vh;
        display: flex;
        align-items: center;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        padding: 7rem 1.5rem 4rem;
        overflow: hidden;
    }

    .hero-category::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(90deg, rgba(18, 58, 59, 0.88) 0%, rgba(18, 58, 59, 0.62) 45%, rgba(13, 44, 45, 0.4) 100%);
        z-index: 1;
    }

    .hero-category::after {
        content: "";
        position: absolute;
        right: -90px;
        bottom: -90px;
        width: 300px;
        height: 300px;
        border-radius: 50%;
        background: rgba(242, 125, 82, 0.18);
        z-index: 1;
    }

    .hero-inner {
        position: relative;
        z-index: 2;
        width: 100%;
        max-width: 760px;
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.875rem;
        color: rgba(255, 255, 255, 0.78);
        margin-bottom: 1.5rem;
        flex-wrap: wrap;
    }

    .breadcrumb a {
        color: rgba(255, 255, 255, 0.78);
        transition: color var(--transition);
    }

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

    .breadcrumb .sep {
        color: rgba(255, 255, 255, 0.45);
    }

    .hero-category h1 {
        color: #fff;
        font-size: 2.6rem;
        font-weight: 900;
        line-height: 1.25;
        letter-spacing: -0.02em;
        margin-bottom: 1.25rem;
    }

    .hero-category h1 .highlight {
        color: var(--color-accent-light);
    }

    .hero-subtitle {
        color: rgba(255, 255, 255, 0.88);
        font-size: 1.15rem;
        line-height: 1.9;
        max-width: 620px;
        margin-bottom: 2rem;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 0.9rem;
        align-items: center;
    }

    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.85rem 2rem;
        border-radius: var(--radius-pill);
        background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
        color: #fff;
        font-weight: 600;
        font-size: 1rem;
        box-shadow: 0 10px 24px rgba(242, 125, 82, 0.4);
        transition: all var(--transition);
    }

    .btn-primary:hover {
        filter: brightness(0.96);
        transform: translateY(-2px);
        box-shadow: 0 14px 30px rgba(242, 125, 82, 0.45);
    }

    .btn-ghost {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.85rem 2rem;
        border-radius: var(--radius-pill);
        background: rgba(255, 255, 255, 0.12);
        border: 1px solid rgba(255, 255, 255, 0.45);
        color: #fff;
        font-weight: 500;
        transition: all var(--transition);
        backdrop-filter: blur(8px);
    }

    .btn-ghost:hover {
        background: rgba(255, 255, 255, 0.22);
        border-color: rgba(255, 255, 255, 0.7);
        transform: translateY(-2px);
    }

    .hero-scroll {
        position: absolute;
        left: 50%;
        bottom: 1.8rem;
        transform: translateX(-50%);
        z-index: 2;
        color: rgba(255, 255, 255, 0.7);
        font-size: 1.4rem;
        animation: scrollHint 2.2s infinite;
    }

    @keyframes scrollHint {
        0%, 100% { transform: translate(-50%, 0); opacity: 0.7; }
        50% { transform: translate(-50%, 8px); opacity: 1; }
    }

    /* ======= 核心卖点 ======= */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        margin-top: 2.5rem;
    }

    .feature-card {
        background: var(--color-surface);
        border-radius: var(--radius-card);
        padding: 2rem;
        box-shadow: var(--shadow-sm);
        border: 1px solid rgba(18, 58, 59, 0.05);
        transition: all var(--transition);
        position: relative;
        overflow: hidden;
    }

    .feature-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 4px;
        height: 100%;
        background: linear-gradient(180deg, var(--color-accent), var(--color-accent-light));
        opacity: 0.8;
    }

    .feature-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
    }

    .feature-card.wide {
        grid-column: 1 / -1;
        background: var(--color-primary);
        color: #fff;
        display: flex;
        align-items: center;
        gap: 2rem;
        padding: 2.2rem 2.5rem;
    }

    .feature-card.wide::before {
        background: var(--color-accent-light);
    }

    .feature-icon {
        width: 54px;
        height: 54px;
        border-radius: 18px;
        background: rgba(242, 125, 82, 0.14);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        color: var(--color-accent);
        margin-bottom: 1.2rem;
    }

    .feature-card.wide .feature-icon {
        background: rgba(242, 125, 82, 0.25);
        color: var(--color-accent-light);
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .feature-card h3 {
        font-size: 1.25rem;
        font-weight: 700;
        margin-bottom: 0.6rem;
    }

    .feature-card p {
        color: var(--color-muted);
        font-size: 0.95rem;
        line-height: 1.8;
        margin: 0;
    }

    .feature-card.wide p {
        color: rgba(255, 255, 255, 0.78);
    }

    /* ======= 统计横幅 ======= */
    .stats-band {
        background: var(--color-primary);
        border-radius: var(--radius-large);
        margin: 0 auto;
        max-width: 1200px;
        padding: 2.5rem 3rem;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
        color: #fff;
        box-shadow: 0 20px 50px rgba(18, 58, 59, 0.25);
    }

    .stat-item {
        text-align: center;
        border-right: 1px solid rgba(255, 255, 255, 0.12);
        padding: 0.5rem 1rem;
    }

    .stat-item:last-child {
        border-right: none;
    }

    .stat-num {
        font-size: 2.2rem;
        font-weight: 900;
        letter-spacing: -0.02em;
        line-height: 1.2;
        color: var(--color-accent-light);
    }

    .stat-label {
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.68);
        margin-top: 0.35rem;
    }

    /* ======= 登录流程 ======= */
    .step-section {
        background: var(--color-bg);
    }

    .steps-wrap {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.25rem;
        margin-top: 2.5rem;
        position: relative;
    }

    .steps-wrap::before {
        content: "";
        position: absolute;
        top: 38px;
        left: 8%;
        right: 8%;
        height: 2px;
        background: linear-gradient(90deg, var(--color-accent), rgba(242, 125, 82, 0.2));
        z-index: 0;
    }

    .step-card {
        background: var(--color-surface);
        border-radius: var(--radius-card);
        padding: 1.6rem 1.4rem;
        box-shadow: var(--shadow-sm);
        text-align: center;
        position: relative;
        z-index: 1;
        border: 1px solid rgba(18, 58, 59, 0.04);
        transition: all var(--transition);
    }

    .step-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
    }

    .step-num {
        width: 76px;
        height: 76px;
        margin: 0 auto 1rem;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
        color: #fff;
        font-size: 1.5rem;
        font-weight: 900;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 10px 24px rgba(242, 125, 82, 0.35);
    }

    .step-card h3 {
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 0.5rem;
    }

    .step-card p {
        font-size: 0.875rem;
        color: var(--color-muted);
        margin: 0;
        line-height: 1.7;
    }

    /* ======= 适用场景（图文交替） ======= */
    .scenario-list {
        display: flex;
        flex-direction: column;
        gap: 2rem;
        margin-top: 2.5rem;
    }

    .scenario-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: center;
        gap: 2.5rem;
        background: var(--color-surface);
        border-radius: var(--radius-large);
        padding: 2rem;
        box-shadow: var(--shadow-sm);
        border: 1px solid rgba(18, 58, 59, 0.05);
        overflow: hidden;
    }

    .scenario-row:nth-child(even) .scenario-image {
        order: 2;
    }

    .scenario-image {
        border-radius: 1.25rem;
        overflow: hidden;
        box-shadow: var(--shadow-md);
        position: relative;
    }

    .scenario-image img {
        width: 100%;
        height: 280px;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .scenario-row:hover .scenario-image img {
        transform: scale(1.03);
    }

    .scenario-content h3 {
        font-size: 1.5rem;
        font-weight: 800;
        margin-bottom: 0.8rem;
        color: var(--color-primary);
    }

    .scenario-content p {
        color: var(--color-muted);
        font-size: 0.95rem;
        line-height: 1.9;
        margin-bottom: 1.25rem;
    }

    .scenario-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .tag-item {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        background: rgba(42, 157, 143, 0.1);
        color: var(--color-success);
        font-size: 0.8rem;
        font-weight: 600;
        padding: 0.3rem 0.9rem;
        border-radius: var(--radius-pill);
    }

    /* ======= FAQ ======= */
    .faq-section {
        background: var(--color-surface);
    }

    .faq-list {
        max-width: 860px;
        margin: 2rem auto 0;
    }

    .faq-item {
        border-bottom: 1px solid var(--color-line);
        padding: 0.5rem 0;
    }

    .faq-item summary {
        list-style: none;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
        padding: 1.2rem 0.25rem;
        font-weight: 600;
        font-size: 1.05rem;
        cursor: pointer;
        color: var(--color-primary);
        transition: color var(--transition);
        outline: none;
    }

    .faq-item summary::-webkit-details-marker {
        display: none;
    }

    .faq-item summary:hover {
        color: var(--color-accent);
    }

    .faq-item summary .faq-icon {
        flex-shrink: 0;
        width: 34px;
        height: 34px;
        border-radius: 50%;
        background: rgba(242, 125, 82, 0.12);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-accent);
        font-size: 0.9rem;
        transition: transform var(--transition);
    }

    .faq-item[open] summary .faq-icon {
        transform: rotate(45deg);
        background: var(--color-accent);
        color: #fff;
    }

    .faq-answer {
        padding: 0 0.5rem 1.5rem;
        color: var(--color-muted);
        font-size: 0.95rem;
        line-height: 1.9;
        background: rgba(247, 244, 239, 0.6);
        border-radius: 0.75rem;
        padding: 1.25rem;
        margin-bottom: 1rem;
    }

    /* ======= CTA 横幅 ======= */
    .cta-band {
        position: relative;
        max-width: 1200px;
        margin: 0 auto;
        background: var(--color-primary);
        border-radius: var(--radius-large);
        padding: 3.5rem 3rem;
        color: #fff;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 2rem;
        box-shadow: 0 24px 60px rgba(18, 58, 59, 0.3);
    }

    .cta-band::after {
        content: "";
        position: absolute;
        right: -60px;
        top: -60px;
        width: 200px;
        height: 200px;
        border-radius: 50%;
        background: rgba(242, 125, 82, 0.2);
    }

    .cta-band h2 {
        font-size: 1.8rem;
        font-weight: 800;
        margin-bottom: 0.75rem;
    }

    .cta-band p {
        color: rgba(255, 255, 255, 0.75);
        margin: 0;
        font-size: 1rem;
    }

    .cta-buttons {
        display: flex;
        gap: 0.8rem;
        flex-shrink: 0;
    }

    .btn-light {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.85rem 1.8rem;
        border-radius: var(--radius-pill);
        background: #fff;
        color: var(--color-primary);
        font-weight: 600;
        transition: all var(--transition);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    }

    .btn-light:hover {
        transform: translateY(-2px);
        box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
    }

    .btn-outline-light {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.85rem 1.8rem;
        border-radius: var(--radius-pill);
        border: 1px solid rgba(255, 255, 255, 0.4);
        color: #fff;
        font-weight: 500;
        transition: all var(--transition);
    }

    .btn-outline-light:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.7);
    }

    /* ======= 留言表单 ======= */
    .form-section {
        background: var(--color-bg);
    }

    .form-wrap {
        max-width: 760px;
        margin: 2.5rem auto 0;
        background: var(--color-surface);
        border-radius: var(--radius-large);
        padding: 2.5rem;
        box-shadow: var(--shadow-sm);
    }

    .form-group {
        margin-bottom: 1.5rem;
    }

    .form-group label {
        display: block;
        font-size: 0.9rem;
        font-weight: 600;
        margin-bottom: 0.35rem;
        color: var(--color-primary);
    }

    .form-group input,
    .form-group textarea {
        width: 100%;
        border: none;
        border-bottom: 1px solid var(--color-line);
        background: transparent;
        padding: 0.75rem 0.25rem;
        font-size: 1rem;
        outline: none;
        border-radius: 0;
        color: var(--color-primary);
        transition: border-color var(--transition);
    }

    .form-group input:focus,
    .form-group textarea:focus {
        border-bottom: 2px solid var(--color-accent);
    }

    .form-group textarea {
        min-height: 110px;
        resize: vertical;
    }

    .form-submit {
        width: 100%;
        padding: 0.95rem 2rem;
        border-radius: var(--radius-pill);
        background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
        color: #fff;
        font-size: 1rem;
        font-weight: 600;
        transition: all var(--transition);
        box-shadow: 0 8px 20px rgba(242, 125, 82, 0.3);
    }

    .form-submit:hover {
        filter: brightness(0.96);
        transform: translateY(-2px);
    }

    .form-submit:disabled {
        opacity: 0.5;
        cursor: not-allowed;
        transform: none;
    }

    /* ======= 页脚 ======= */
    .site-footer {
        background: var(--color-primary-deep);
        color: rgba(255, 255, 255, 0.8);
        margin-top: 5rem;
        padding: 3rem 1.5rem 1.5rem;
        border-top: 4px solid var(--color-accent);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr;
        gap: 2.5rem;
        max-width: 1200px;
        margin: 0 auto;
    }

    .footer-brand {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        font-weight: 800;
        font-size: 1.2rem;
        color: #fff;
        margin-bottom: 1rem;
    }

    .footer-brand .brand-logo {
        background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
        box-shadow: 0 4px 14px rgba(242, 125, 82, 0.4);
    }

    .footer-desc {
        font-size: 0.9rem;
        line-height: 1.9;
        color: rgba(255, 255, 255, 0.65);
        max-width: 340px;
        margin: 0;
    }

    .footer-col h4 {
        font-size: 1rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 1rem;
    }

    .footer-link {
        display: block;
        padding: 0.3rem 0;
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.65);
        transition: color var(--transition);
    }

    .footer-link:hover {
        color: var(--color-accent-light);
    }

    .footer-contact {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.65);
        padding: 0.3rem 0;
    }

    .footer-contact i {
        width: 20px;
        color: var(--color-accent-light);
    }

    .footer-bottom {
        max-width: 1200px;
        margin: 2.5rem auto 0;
        padding-top: 1.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 0.75rem;
        font-size: 0.8rem;
        color: rgba(255, 255, 255, 0.45);
    }

    /* ======= 响应式 ======= */
    @media (max-width: 1024px) {
        .hero-category h1 {
            font-size: 2.2rem;
        }

        .steps-wrap {
            grid-template-columns: repeat(2, 1fr);
        }

        .steps-wrap::before {
            display: none;
        }

        .stats-band {
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            padding: 2rem;
        }

        .stat-item {
            border-right: none;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 1rem;
        }

        .stat-item:nth-child(n+3) {
            border-bottom: none;
        }

        .scenario-row {
            grid-template-columns: 1fr;
            padding: 1.5rem;
        }

        .scenario-row:nth-child(even) .scenario-image {
            order: 0;
        }

        .cta-band {
            flex-direction: column;
            text-align: center;
        }

        .cta-buttons {
            justify-content: center;
        }
    }

    @media (max-width: 768px) {
        .nav-inner {
            padding: 0.5rem 0.6rem 0.5rem 1rem;
        }

        .nav-toggle {
            display: flex;
        }

        .nav-menu {
            display: flex;
            flex-direction: column;
            align-items: stretch;
            gap: 0.4rem;
            position: absolute;
            top: calc(100% + 10px);
            left: 50%;
            transform: translateX(-50%) scale(0.96);
            opacity: 0;
            pointer-events: none;
            width: 92%;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 1.5rem;
            padding: 1.2rem;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(18, 58, 59, 0.06);
            transition: all 0.3s ease;
        }

        .nav-menu.open {
            opacity: 1;
            pointer-events: auto;
            transform: translateX(-50%) scale(1);
        }

        .nav-link,
        .nav-cta {
            padding: 0.75rem 1.2rem;
            font-size: 1rem;
            text-align: center;
        }

        .nav-cta {
            justify-content: center;
            margin-left: 0 !important;
            margin-top: 0.5rem;
        }

        .section {
            padding: 3rem 1.25rem;
        }

        .section-title {
            font-size: 1.5rem;
        }

        .hero-category {
            min-height: 65vh;
            padding: 6rem 1.25rem 3rem;
        }

        .hero-category h1 {
            font-size: 1.8rem;
        }

        .hero-subtitle {
            font-size: 1rem;
        }

        .hero-actions {
            flex-direction: column;
            align-items: stretch;
        }

        .btn-primary,
        .btn-ghost {
            justify-content: center;
        }

        .feature-grid {
            grid-template-columns: 1fr;
        }

        .feature-card.wide {
            flex-direction: column;
            text-align: center;
            padding: 2rem 1.5rem;
        }

        .steps-wrap {
            grid-template-columns: 1fr;
            gap: 1rem;
        }

        .cta-band {
            padding: 2.5rem 1.5rem;
        }

        .cta-buttons {
            flex-direction: column;
            width: 100%;
        }

        .btn-light,
        .btn-outline-light {
            width: 100%;
            justify-content: center;
        }

        .form-wrap {
            padding: 1.5rem;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 2rem;
        }

        .footer-bottom {
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
    }

    @media (max-width: 520px) {
        .brand span:last-child {
            font-size: 0.95rem;
        }

        .brand-logo {
            width: 35px;
            height: 35px;
        }

        .nav-fixed {
            top: 0.6rem;
            width: calc(100% - 1.2rem);
        }

        .hero-category h1 {
            font-size: 1.6rem;
        }

        .stats-band {
            grid-template-columns: 1fr;
        }

        .stat-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            border-right: none;
        }

        .stat-item:last-child {
            border-bottom: none;
        }

        .scenario-image img {
            height: 220px;
        }

        .section-title {
            font-size: 1.35rem;
        }

        .cta-band h2 {
            font-size: 1.4rem;
        }
    }

/* roulang page: article */
:root {
  --color-bg: #F7F4EF;
  --color-surface: #FFFFFF;
  --color-primary: #123A3B;
  --color-accent: #F27D52;
  --color-success: #2A9D8F;
  --color-muted: #6B7280;
  --color-line: #E5E7EB;
  --color-footer: #0D2C2D;
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
  --radius-sm: .75rem;
  --shadow-sm: 0 1px 3px rgba(18,58,59,.06);
  --shadow-md: 0 8px 24px rgba(18,58,59,.10);
  --transition: .25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--color-bg);
  color: var(--color-primary);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition);
}

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

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

.container-xl {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

/* ========== 悬浮胶囊导航 ========== */
.nav-fixed {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  width: min(1200px, calc(100% - 32px));
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,.84);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 999px;
  box-shadow: 0 10px 36px rgba(18,58,59,.12);
  padding: .6rem .8rem .6rem 1.4rem;
  transition: box-shadow var(--transition), background var(--transition);
}

.nav-inner:hover {
  background: rgba(255,255,255,.94);
  box-shadow: 0 14px 40px rgba(18,58,59,.16);
}

.brand {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--color-primary);
  white-space: nowrap;
}

.brand:hover {
  opacity: .9;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #f2a65a);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(242,125,82,.35);
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: .35rem;
}

.nav-link {
  padding: .45rem 1rem;
  font-size: .9rem;
  font-weight: 500;
  color: var(--color-primary);
  border-radius: 999px;
  position: relative;
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--color-accent);
  background: rgba(242,125,82,.08);
}

.nav-link.active {
  color: var(--color-accent);
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: .1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .48rem 1.15rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
  font-size: .88rem;
  box-shadow: 0 4px 14px rgba(242,125,82,.32);
  transition: filter var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.nav-cta:hover {
  filter: brightness(.94);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(242,125,82,.38);
}

.nav-cta:active {
  transform: scale(.96);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--color-primary);
  font-size: 1.12rem;
  transition: background var(--transition);
}

.nav-toggle:hover {
  background: rgba(18,58,59,.06);
}

/* ========== 面包屑 ========== */
.breadcrumb {
  padding: 6.8rem 24px 1.2rem;
  max-width: 1200px;
  margin: 0 auto;
  font-size: .875rem;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .2rem;
}

.breadcrumb a {
  color: var(--color-muted);
  font-weight: 500;
}

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

.breadcrumb-sep {
  margin: 0 .4rem;
  color: #c0c7c6;
}

.breadcrumb-current {
  color: var(--color-primary);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 60vw;
}

/* ========== 文章头部 ========== */
.article-hero {
  padding: 1rem 24px 2rem;
}

.article-header {
  max-width: 900px;
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: 26px;
  padding: 3rem 3.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255,255,255,.7);
  position: relative;
  overflow: hidden;
}

.article-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), #f2a65a);
}

.article-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .85rem;
  background: rgba(242,125,82,.12);
  color: var(--color-accent);
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.article-header h1 {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 900;
  line-height: 1.4;
  color: var(--color-primary);
  margin-bottom: 1.1rem;
  letter-spacing: -.01em;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  font-size: .85rem;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
  padding-top: 1rem;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
}

.meta-item i {
  color: var(--color-accent);
  font-size: .9rem;
}

/* ========== 正文 ========== */
.article-body {
  max-width: 780px;
  margin: 0 auto;
  padding: 2.5rem 24px 3rem;
  font-size: 1rem;
  color: #2d3a3a;
  min-height: 200px;
}

.article-body p {
  margin-bottom: 1.25rem;
  line-height: 1.9;
}

.article-body h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 2.2rem 0 1rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--color-line);
  line-height: 1.5;
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 1.6rem 0 .8rem;
}

.article-body h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 1.3rem 0 .6rem;
}

.article-body a {
  color: var(--color-accent);
  border-bottom: 1px solid rgba(242,125,82,.35);
  font-weight: 500;
}

.article-body a:hover {
  color: #d9622f;
  border-color: var(--color-accent);
}

.article-body blockquote {
  border-left: 4px solid var(--color-accent);
  background: #fff8f4;
  padding: 1rem 1.4rem;
  border-radius: 0 .9rem .9rem 0;
  color: #5b6b6b;
  margin: 1.5rem 0;
  font-style: italic;
  line-height: 1.8;
}

.article-body img {
  border-radius: 1.2rem;
  margin: 1.6rem auto;
  box-shadow: var(--shadow-sm);
}

.article-body figure {
  margin: 1.6rem auto;
}

.article-body figcaption {
  font-size: .85rem;
  color: var(--color-muted);
  text-align: center;
  margin-top: .4rem;
}

.article-body ul,
.article-body ol {
  margin: 1rem 0 1.5rem 1.5rem;
  line-height: 1.9;
}

.article-body li {
  margin-bottom: .45rem;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  border-radius: 1rem;
  overflow: hidden;
  font-size: .92rem;
}

.article-body th,
.article-body td {
  border: 1px solid var(--color-line);
  padding: .7rem 1rem;
  text-align: left;
}

.article-body th {
  background: rgba(18,58,59,.04);
  font-weight: 700;
  color: var(--color-primary);
}

.article-body pre {
  background: #1e2d2d;
  color: #f0f4f4;
  border-radius: 1rem;
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-size: .9rem;
  line-height: 1.7;
}

.article-body code {
  font-family: 'SF Mono', Consolas, 'Liberation Mono', monospace;
  background: rgba(18,58,59,.06);
  padding: .15rem .4rem;
  border-radius: .35rem;
  font-size: .88em;
}

.article-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

/* ========== 未找到 ========== */
.not-found {
  text-align: center;
  padding: 3.5rem 2rem;
  border: 2px dashed var(--color-line);
  border-radius: 22px;
  background: var(--color-surface);
}

.not-found i {
  font-size: 2.6rem;
  color: #d1d5db;
}

.not-found h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: .8rem 0 .4rem;
  color: var(--color-primary);
}

.not-found p {
  color: var(--color-muted);
  font-size: .9rem;
  margin-bottom: 1.4rem;
}

/* ========== 标签 ========== */
.tag-wrap {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 24px 2.2rem;
}

.tag-label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: .6rem;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .35rem .95rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-size: .82rem;
  color: var(--color-muted);
  transition: border-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.tag-chip:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ========== 相关推荐 ========== */
.recommend-section {
  padding: 1.5rem 24px 2.5rem;
}

.recommend-inner {
  max-width: 900px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 1.6rem;
  line-height: 1.4;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 3px;
  margin: .45rem auto 0;
}

.recommend-banner {
  position: relative;
  display: block;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.2rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.recommend-banner:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.recommend-banner img {
  width: 100%;
  height: 230px;
  object-fit: cover;
}

.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(18,58,59,.9) 10%, rgba(18,58,59,.35) 70%, rgba(18,58,59,.05));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 2rem 2.5rem;
  color: #fff;
}

.banner-label {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .25rem .8rem;
  background: var(--color-accent);
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(242,125,82,.4);
  margin-bottom: .8rem;
}

.banner-overlay h3 {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: .35rem;
  text-shadow: 0 2px 10px rgba(0,0,0,.2);
}

.banner-overlay p {
  font-size: .9rem;
  color: rgba(255,255,255,.85);
  max-width: 400px;
  line-height: 1.6;
}

.recommend-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.link-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: 1rem 1.2rem;
  background: var(--color-surface);
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.7);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
  font-size: .92rem;
  color: var(--color-primary);
  transition: all var(--transition);
}

.link-item i {
  color: var(--color-accent);
}

.link-item:hover {
  border-color: rgba(242,125,82,.4);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  color: var(--color-accent);
}

.link-item:hover i {
  transform: translateX(3px);
}

/* ========== 返回栏 ========== */
.return-bar {
  display: flex;
  justify-content: center;
  gap: 1rem;
  padding: .5rem 24px 3rem;
  flex-wrap: wrap;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .62rem 1.4rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-weight: 600;
  font-size: .9rem;
  color: var(--color-primary);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary:active {
  transform: scale(.97);
}

/* ========== CTA ========== */
.article-cta {
  background: var(--color-primary);
  border-radius: 28px;
  margin: 1.5rem auto 3.5rem;
  padding: 2.8rem 2rem;
  max-width: 900px;
  width: calc(100% - 48px);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.article-cta::before {
  content: '';
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(242,125,82,.2);
  top: -90px;
  right: -70px;
}

.article-cta::after {
  content: '';
  position: absolute;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: rgba(42,157,143,.25);
  bottom: -55px;
  left: -40px;
}

.article-cta h3 {
  color: #fff;
  font-size: 1.45rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  flex-wrap: wrap;
}

.article-cta h3 i {
  color: var(--color-accent);
}

.article-cta p {
  color: rgba(255,255,255,.75);
  margin-top: .5rem;
  font-size: .92rem;
  position: relative;
  z-index: 1;
}

.cta-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem 1.6rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  box-shadow: 0 8px 22px rgba(242,125,82,.35);
  transition: all var(--transition);
}

.btn-accent:hover {
  filter: brightness(.94);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(242,125,82,.45);
}

.btn-accent:active {
  transform: scale(.96);
}

.btn-accent.saved {
  background: var(--color-success);
  box-shadow: 0 8px 22px rgba(42,157,143,.35);
}

.btn-outline-light {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem 1.6rem;
  border: 1px solid rgba(255,255,255,.5);
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  background: transparent;
  transition: all var(--transition);
}

.btn-outline-light:hover {
  background: rgba(255,255,255,.14);
  border-color: #fff;
  transform: translateY(-3px);
}

.btn-outline-light:active {
  transform: scale(.96);
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--color-footer);
  color: rgba(255,255,255,.8);
  margin-top: 1rem;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), #f2a65a, var(--color-success));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2.5rem;
  padding: 3.2rem 0 2.2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-weight: 800;
  font-size: 1.08rem;
  color: #fff;
  margin-bottom: .8rem;
}

.footer-desc {
  font-size: .88rem;
  line-height: 1.8;
  color: rgba(255,255,255,.65);
  max-width: 340px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: .45rem;
}

.footer-col h4::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 4px;
}

.footer-link {
  display: block;
  padding: .35rem 0;
  font-size: .9rem;
  color: rgba(255,255,255,.7);
  transition: color var(--transition), padding-left var(--transition);
}

.footer-link:hover {
  color: var(--color-accent);
  padding-left: .4rem;
}

.footer-contact {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .88rem;
  color: rgba(255,255,255,.7);
  margin-bottom: .5rem;
}

.footer-contact i {
  color: var(--color-accent);
  width: 16px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 1.2rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .8rem;
  color: rgba(255,255,255,.45);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .nav-fixed {
    top: .6rem;
    width: calc(100% - 24px);
  }

  .nav-inner {
    padding: .5rem .6rem .5rem 1rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 24px;
    box-shadow: var(--shadow-md);
    flex-direction: column;
    align-items: stretch;
    padding: .9rem;
    gap: .4rem;
    display: none;
  }

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

  .nav-link {
    padding: .65rem 1rem;
    text-align: center;
  }

  .nav-cta {
    margin: .3rem .5rem 0 !important;
    justify-content: center;
    padding: .65rem 1.5rem;
  }

  .breadcrumb {
    padding: 6rem 20px 1rem;
  }

  .article-hero {
    padding: .5rem 14px 1.5rem;
  }

  .article-header {
    padding: 2rem 1.5rem;
    border-radius: 20px;
  }

  .article-meta {
    gap: .8rem;
    font-size: .8rem;
  }

  .article-body {
    padding: 1.8rem 18px 2.2rem;
    font-size: .95rem;
  }

  .article-body h2 {
    font-size: 1.25rem;
  }

  .article-body h3 {
    font-size: 1.1rem;
  }

  .article-body img {
    border-radius: 1rem;
  }

  .tag-wrap {
    padding: 0 18px 1.6rem;
  }

  .recommend-section {
    padding: 1rem 14px 2rem;
  }

  .recommend-banner img {
    height: 180px;
  }

  .banner-overlay {
    padding: 1.4rem 1.4rem;
  }

  .banner-overlay h3 {
    font-size: 1.15rem;
  }

  .recommend-links {
    grid-template-columns: 1fr;
    gap: .7rem;
  }

  .return-bar {
    padding: .4rem 18px 2.2rem;
  }

  .article-cta {
    width: calc(100% - 28px);
    margin: 1rem auto 2.5rem;
    padding: 2.2rem 1.3rem;
    border-radius: 24px;
  }

  .article-cta h3 {
    font-size: 1.2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2.4rem 0 1.8rem;
  }

  .container-xl {
    width: calc(100% - 36px);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .breadcrumb {
    padding-top: 5.8rem;
    font-size: .8rem;
  }

  .article-header h1 {
    font-size: 1.45rem;
  }

  .article-badge {
    font-size: .72rem;
  }

  .meta-item {
    width: 100%;
  }

  .article-body {
    padding-left: 14px;
    padding-right: 14px;
    font-size: .92rem;
  }

  .cta-btns .btn-accent,
  .cta-btns .btn-outline-light {
    width: 100%;
    justify-content: center;
  }

  .banner-overlay p {
    display: none;
  }

  .banner-overlay h3 {
    font-size: 1rem;
  }

  .banner-label {
    font-size: .7rem;
    padding: .2rem .65rem;
  }
}

/* roulang page: category2 */
:root {
    --color-bg: #F7F4EF;
    --color-surface: #FFFFFF;
    --color-primary: #123A3B;
    --color-primary-dark: #0D2C2D;
    --color-accent: #F27D52;
    --color-accent-light: #F2A65A;
    --color-success: #2A9D8F;
    --color-muted: #6B7280;
    --color-line: #E5E7EB;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --shadow-sm: 0 2px 12px rgba(18, 58, 59, 0.06);
    --shadow-md: 0 10px 30px rgba(18, 58, 59, 0.1);
    --shadow-lg: 0 18px 48px rgba(18, 58, 59, 0.14);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--color-bg);
    color: #1F2937;
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

  ::selection {
    background: rgba(242, 125, 82, 0.25);
  }

  .container-xl {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* ============ 导航 ============ */
  .nav-fixed {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 50;
    width: 92%;
    max-width: 1120px;
  }

  .nav-inner {
    position: relative;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-radius: 999px;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 8px 30px rgba(18, 58, 59, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.65);
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--color-primary);
    white-space: nowrap;
  }

  .brand-logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: inset 0 -3px 0 rgba(242, 125, 82, 0.7);
    flex-shrink: 0;
  }

  .nav-menu {
    display: flex;
    align-items: center;
    gap: 20px;
  }

  .nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: #374151;
    position: relative;
    padding: 6px 4px;
    transition: color 0.2s;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--color-accent);
    transition: width 0.25s;
  }

  .nav-link:hover {
    color: var(--color-accent);
  }

  .nav-link:hover::after {
    width: 100%;
  }

  .nav-link.active {
    color: var(--color-accent);
    font-weight: 600;
  }

  .nav-link.active::after {
    width: 100%;
  }

  .nav-cta {
    background: var(--color-accent);
    color: #fff !important;
    padding: 8px 22px !important;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.92rem;
    transition: all 0.2s;
    box-shadow: 0 4px 14px rgba(242, 125, 82, 0.35);
  }

  .nav-cta:hover {
    background: #E96A3D;
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(242, 125, 82, 0.4);
  }

  .nav-cta:active {
    transform: scale(0.96);
  }

  .nav-toggle {
    display: none;
    background: none;
    border: 0;
    font-size: 1.4rem;
    color: var(--color-primary);
    cursor: pointer;
    padding: 6px;
  }

  /* ============ Hero ============ */
  .hero {
    position: relative;
    background: url('/assets/images/backpic/back-2.png') center 25% / cover no-repeat;
    min-height: 70vh;
    display: flex;
    align-items: center;
    padding: 130px 0 80px;
  }

  .hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(13, 44, 45, 0.88) 0%, rgba(18, 58, 59, 0.68) 55%, rgba(18, 58, 59, 0.25) 100%);
  }

  .hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 999px;
    backdrop-filter: blur(4px);
    letter-spacing: 0.5px;
  }

  .hero h1 {
    font-size: 2.6rem;
    line-height: 1.3;
    font-weight: 900;
    color: #fff;
    margin: 20px 0 16px;
  }

  .hero h1 .highlight {
    color: var(--color-accent-light);
  }

  .hero-sub {
    color: rgba(255, 255, 255, 0.88);
    font-size: 1.05rem;
    max-width: 540px;
    margin-bottom: 30px;
    line-height: 1.8;
  }

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

  .scroll-hint {
    position: absolute;
    bottom: 26px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.75);
    font-size: 1.5rem;
    animation: floatDown 2s infinite ease-in-out;
    z-index: 2;
  }

  @keyframes floatDown {
    0%,
    100% {
      transform: translate(-50%, 0);
    }
    50% {
      transform: translate(-50%, 10px);
    }
  }

  /* ============ 通用按钮 ============ */
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-radius: 999px;
    padding: 12px 28px;
    font-weight: 600;
    font-size: 0.98rem;
    transition: all 0.25s;
    border: 0;
    cursor: pointer;
  }

  .btn-primary {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 6px 20px rgba(242, 125, 82, 0.4);
  }

  .btn-primary:hover {
    background: #E96A3D;
    transform: translateY(-2px);
    box-shadow: 0 8px 26px rgba(242, 125, 82, 0.48);
  }

  .btn-secondary {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(4px);
  }

  .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.22);
  }

  .btn-dark {
    background: var(--color-primary);
    color: #fff;
  }

  .btn-dark:hover {
    background: #1B4B4C;
    transform: translateY(-2px);
  }

  /* ============ 通用板块 ============ */
  .section {
    padding: 88px 0;
  }

  .section-head {
    margin-bottom: 44px;
  }

  .section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(242, 125, 82, 0.1);
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 999px;
    letter-spacing: 0.5px;
  }

  .section-title {
    font-size: 2rem;
    line-height: 1.35;
    font-weight: 800;
    color: var(--color-primary);
    margin: 16px 0 12px;
  }

  .section-sub {
    color: var(--color-muted);
    max-width: 640px;
    font-size: 1rem;
    margin: 0;
  }

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

  .text-center {
    text-align: center;
  }

  .text-link {
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    transition: gap 0.2s;
  }

  .text-link:hover {
    gap: 11px;
  }

  /* ============ 页内目录 ============ */
  .toc-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--color-surface);
    border-radius: 999px;
    padding: 10px 24px;
    margin-bottom: 48px;
    box-shadow: var(--shadow-sm);
    flex-wrap: wrap;
  }

  .toc-label {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
  }

  .toc-links {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
  }

  .toc-link {
    font-size: 0.85rem;
    color: var(--color-muted);
    padding: 6px 16px;
    border-radius: 999px;
    transition: all 0.2s;
  }

  .toc-link:hover {
    background: rgba(242, 125, 82, 0.1);
    color: var(--color-accent);
  }

  /* ============ 统计 ============ */
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
  }

  .stats-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    border-top: 4px solid var(--color-accent);
  }

  .stats-card:nth-child(2) {
    transform: translateY(12px);
    background: var(--color-primary);
    border-top-color: var(--color-accent-light);
  }

  .stats-card:nth-child(3) {
    border-top-color: var(--color-success);
  }

  .stats-card:hover {
    box-shadow: var(--shadow-md);
  }

  .stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(242, 125, 82, 0.1);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-bottom: 14px;
  }

  .stats-card:nth-child(2) .stat-icon {
    background: rgba(242, 165, 90, 0.2);
    color: var(--color-accent-light);
  }

  .stat-number {
    font-size: 2.6rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1.2;
  }

  .stats-card:nth-child(2) .stat-number {
    color: var(--color-accent-light);
  }

  .stat-label {
    color: var(--color-muted);
    font-size: 0.9rem;
    margin-top: 6px;
  }

  .stats-card:nth-child(2) .stat-label {
    color: rgba(255, 255, 255, 0.8);
  }

  /* ============ 内容展示 ============ */
  .feature-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    display: flex;
    margin-bottom: 36px;
  }

  .feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
  }

  .feature-reverse {
    flex-direction: row-reverse;
  }

  .feature-media {
    width: 50%;
    min-height: 280px;
    overflow: hidden;
  }

  .feature-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }

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

  .feature-body {
    width: 50%;
    padding: 40px 36px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(42, 157, 143, 0.1);
    color: #228B7E;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 5px 14px;
    border-radius: 999px;
    align-self: flex-start;
  }

  .feature-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-primary);
    margin: 14px 0 10px;
  }

  .feature-text {
    color: var(--color-muted);
    font-size: 0.96rem;
    margin: 0;
  }

  /* ============ 流程 ============ */
  .process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    align-items: start;
  }

  .process-step {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--shadow-sm);
    transition: all 0.25s;
    border-top: 3px solid transparent;
  }

  .process-step:hover {
    border-top-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
  }

  .process-grid .sm-offset {
    margin-top: 16px;
  }

  .step-num {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-accent);
    opacity: 0.85;
    line-height: 1;
  }

  .step-title {
    font-weight: 700;
    color: var(--color-primary);
    margin-top: 12px;
    font-size: 1.05rem;
  }

  .step-text {
    color: var(--color-muted);
    font-size: 0.92rem;
    margin-top: 6px;
  }

  /* ============ 适用场景 ============ */
  .scenario-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 24px;
    align-items: start;
  }

  .scenario-grid .scenario-card:nth-child(1) {
    grid-column: 1;
    grid-row: 1;
  }

  .scenario-grid .scenario-card:nth-child(2) {
    grid-column: 2;
    grid-row: 1 / 3;
  }

  .scenario-grid .scenario-card:nth-child(3) {
    grid-column: 1;
    grid-row: 2;
  }

  .scenario-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: 30px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
  }

  .scenario-card::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    width: 90px;
    height: 90px;
    border-radius: 100% 0 0 0;
    background: rgba(242, 125, 82, 0.08);
    transition: all 0.3s;
  }

  .scenario-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
  }

  .scenario-card.large {
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .scenario-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(18, 58, 59, 0.08);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 16px;
  }

  .scenario-icon.orange {
    background: rgba(242, 125, 82, 0.12);
    color: var(--color-accent);
  }

  .scenario-icon.green {
    background: rgba(42, 157, 143, 0.12);
    color: #228B7E;
  }

  .scenario-title {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-primary);
    margin-bottom: 8px;
  }

  .scenario-text {
    color: var(--color-muted);
    font-size: 0.94rem;
    margin: 0;
  }

  .scenario-points {
    list-style: none;
    padding: 0;
    margin: 16px 0 0;
  }

  .scenario-points li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--color-muted);
    padding: 5px 0;
  }

  .scenario-points li i {
    color: var(--color-success);
    font-size: 0.8rem;
  }

  /* ============ 深色原则区 ============ */
  .dark-band {
    background: var(--color-primary-dark);
    color: #fff;
  }

  .dark-band .section-title {
    color: #fff;
  }

  .dark-band .section-sub {
    color: rgba(255, 255, 255, 0.75);
  }

  .dark-band .section-label {
    background: rgba(242, 125, 82, 0.2);
    color: var(--color-accent-light);
  }

  .principles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .principles-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-xl);
    padding: 30px;
    backdrop-filter: blur(4px);
    transition: all 0.3s;
  }

  .principles-card:nth-child(2) {
    transform: translateY(16px);
  }

  .principles-card:hover {
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(242, 125, 82, 0.4);
  }

  .principles-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(242, 125, 82, 0.2);
    color: var(--color-accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 18px;
  }

  .principles-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0 0 10px;
  }

  .principles-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    margin: 0;
  }

  /* ============ FAQ ============ */
  .faq-wrap {
    max-width: 860px;
    margin: 0 auto;
  }

  .faq-item {
    border-bottom: 1px solid var(--color-line);
  }

  .faq-item:first-child {
    border-top: 1px solid var(--color-line);
  }

  .faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 6px;
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    transition: color 0.2s;
    font-size: 1.02rem;
    background: none;
    border: 0;
    width: 100%;
    text-align: left;
  }

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

  .faq-question i {
    transition: transform 0.3s;
    color: var(--color-accent);
    flex-shrink: 0;
  }

  .faq-item.open .faq-question i {
    transform: rotate(45deg);
  }

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

  .faq-answer-inner {
    padding: 14px 18px;
    margin: 0 0 18px;
    color: var(--color-muted);
    background: #F9FAFB;
    border-radius: 12px;
    font-size: 0.95rem;
  }

  /* ============ 表单与支持 ============ */
  .contact-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.9fr;
    gap: 32px;
    align-items: stretch;
  }

  .contact-panel {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: 0 20px 60px rgba(18, 58, 59, 0.12);
  }

  .form-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin: 0 0 8px;
  }

  .form-sub {
    color: var(--color-muted);
    font-size: 0.95rem;
    margin: 0 0 30px;
  }

  .form-field {
    margin-bottom: 26px;
  }

  .form-label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
  }

  .form-input {
    width: 100%;
    border: 0;
    border-bottom: 2px solid var(--color-line);
    background: transparent;
    padding: 10px 2px;
    font-size: 0.98rem;
    outline: none;
    transition: border-color 0.25s, background 0.25s;
    color: #1F2937;
    border-radius: 0;
  }

  .form-input:focus {
    border-bottom-color: var(--color-accent);
    background: rgba(242, 125, 82, 0.03);
  }

  .form-input::placeholder {
    color: #9CA3AF;
  }

  textarea.form-input {
    resize: vertical;
    min-height: 88px;
  }

  .btn-submit {
    width: 100%;
    justify-content: center;
  }

  .btn-submit:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
  }

  .support-panel {
    background: var(--color-primary);
    border-radius: var(--radius-xl);
    color: #fff;
    padding: 38px 34px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
  }

  .support-panel::before {
    content: "";
    position: absolute;
    top: -50px;
    right: -50px;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: rgba(242, 125, 82, 0.15);
  }

  .support-panel h3 {
    font-size: 1.4rem;
    font-weight: 800;
    margin: 0 0 6px;
    position: relative;
  }

  .support-panel p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.94rem;
    margin: 0 0 10px;
    position: relative;
  }

  .support-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 0.94rem;
    position: relative;
  }

  .support-item i {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(242, 125, 82, 0.2);
    color: var(--color-accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .support-panel .btn {
    margin-top: 12px;
    position: relative;
  }

  /* ============ 页脚 ============ */
  .site-footer {
    background: var(--color-primary-dark);
    color: #fff;
    padding: 60px 0 28px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 12px;
  }

  .footer-desc {
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.92rem;
    line-height: 1.8;
    margin: 0;
  }

  .footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 14px;
    color: #fff;
  }

  .footer-link {
    display: block;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.92rem;
    padding: 5px 0;
    transition: color 0.2s, padding-left 0.2s;
  }

  .footer-link:hover {
    color: var(--color-accent);
    padding-left: 6px;
  }

  .footer-contact {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.92rem;
    padding: 6px 0;
  }

  .footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 26px;
    color: rgba(255, 255, 255, 0.58);
    font-size: 0.85rem;
  }

  /* ============ Toast ============ */
  .toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--color-primary);
    color: #fff;
    padding: 10px 24px;
    border-radius: 999px;
    font-size: 0.9rem;
    z-index: 100;
    opacity: 0;
    transition: all 0.3s;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
    pointer-events: none;
  }

  .toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }

  /* ============ 响应式 ============ */
  @media (max-width: 1024px) {
    .process-grid {
      grid-template-columns: repeat(2, 1fr);
    }

    .process-grid .sm-offset {
      margin-top: 0;
    }

    .process-grid .sm-offset:nth-child(even) {
      margin-top: 12px;
    }

    .stat-number {
      font-size: 2.2rem;
    }

    .feature-body {
      padding: 30px 24px;
    }
  }

  @media (max-width: 900px) {
    .contact-grid {
      grid-template-columns: 1fr;
    }

    .support-panel {
      padding: 30px;
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
  }

  @media (max-width: 768px) {
    .nav-toggle {
      display: block;
    }

    .nav-menu {
      position: absolute;
      top: 58px;
      left: 50%;
      transform: translateX(-50%) scale(0.95);
      opacity: 0;
      pointer-events: none;
      flex-direction: column;
      background: rgba(255, 255, 255, 0.98);
      border-radius: 20px;
      padding: 20px 24px;
      gap: 14px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.16);
      transition: all 0.25s;
      width: 100%;
      align-items: center;
      border: 1px solid rgba(255, 255, 255, 0.7);
    }

    .nav-menu.open {
      opacity: 1;
      pointer-events: auto;
      transform: translateX(-50%) scale(1);
    }

    .nav-menu .nav-link,
    .nav-menu .nav-cta {
      width: 100%;
      text-align: center;
      margin-left: 0 !important;
    }

    .hero {
      padding: 120px 0 70px;
      min-height: 70vh;
    }

    .hero h1 {
      font-size: 2rem;
    }

    .section {
      padding: 64px 0;
    }

    .section-title {
      font-size: 1.7rem;
    }

    .stats-grid {
      grid-template-columns: 1fr;
    }

    .stats-card:nth-child(2) {
      transform: none;
    }

    .feature-card,
    .feature-reverse {
      flex-direction: column;
    }

    .feature-media,
    .feature-body {
      width: 100%;
    }

    .feature-media {
      min-height: 200px;
    }

    .scenario-grid {
      grid-template-columns: 1fr;
    }

    .scenario-grid .scenario-card:nth-child(1),
    .scenario-grid .scenario-card:nth-child(2),
    .scenario-grid .scenario-card:nth-child(3) {
      grid-column: auto;
      grid-row: auto;
    }

    .scenario-card.large {
      min-height: auto;
    }

    .principles-grid {
      grid-template-columns: 1fr;
    }

    .principles-card:nth-child(2) {
      transform: none;
    }

    .toc-bar {
      border-radius: 24px;
    }

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

    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }

    .contact-panel {
      padding: 30px 24px;
    }
  }

  @media (max-width: 520px) {
    .hero h1 {
      font-size: 1.7rem;
    }

    .hero-sub {
      font-size: 0.95rem;
    }

    .btn {
      width: 100%;
      justify-content: center;
    }

    .hero-actions {
      flex-direction: column;
    }

    .process-grid {
      grid-template-columns: 1fr;
    }

    .process-grid .sm-offset:nth-child(even) {
      margin-top: 0;
    }

    .section-title {
      font-size: 1.5rem;
    }

    .feature-title {
      font-size: 1.15rem;
    }

    .support-panel h3 {
      font-size: 1.2rem;
    }
  }