/* roulang page: index */
:root {
  --primary: #2266ff;
  --primary-600: #1853d6;
  --primary-700: #1240ac;
  --accent: #ffb524;
  --accent-600: #f09a00;
  --navy-900: #0b1930;
  --navy-800: #10233f;
  --navy-700: #182f52;
  --bg: #f4f7fc;
  --surface: #ffffff;
  --text: #1b2a41;
  --text-muted: #66788f;
  --line: #e3e9f2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(11, 25, 48, .06);
  --shadow: 0 10px 30px rgba(11, 25, 48, .08);
  --shadow-lg: 0 24px 60px rgba(11, 25, 48, .14);
  --container-w: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --ease: all .25s cubic-bezier(.4, 0, .2, 1);
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
ul, ol {
  list-style: none;
}
button, input, select, textarea {
  font: inherit;
  color: inherit;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}
::selection {
  background: rgba(34, 102, 255, .18);
}
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(34, 102, 255, .4);
  outline-offset: 2px;
  border-radius: 8px;
}
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 96px 0;
}
.section-head {
  max-width: 680px;
  margin-bottom: 48px;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-head.light h2 {
  color: #fff;
}
.section-head.light p {
  color: rgba(255, 255, 255, .7);
}
.section-head.light .eyebrow {
  background: rgba(255, 255, 255, .12);
  color: #ffd77a;
}
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(34, 102, 255, .1);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--navy-900);
}
.section-head p {
  margin-top: 12px;
  font-size: 17px;
  color: var(--text-muted);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  border: 2px solid transparent;
  transition: var(--ease);
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #4a8bff);
  color: #fff;
  box-shadow: 0 10px 24px rgba(34, 102, 255, .28);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(34, 102, 255, .38);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  border-color: rgba(255, 255, 255, .5);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, .12);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-ghost {
  border-color: var(--line);
  color: var(--navy-900);
  background: var(--surface);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: baseline;
  font-size: 24px;
  font-weight: 800;
  color: var(--navy-900);
  gap: 6px;
  letter-spacing: .01em;
  white-space: nowrap;
}
.brand .brand-accent {
  color: var(--primary);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--ease);
}
.main-nav a:hover {
  color: var(--primary);
  background: rgba(34, 102, 255, .08);
}
.main-nav a.active {
  color: var(--primary);
  background: rgba(34, 102, 255, .1);
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--navy-900);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: var(--ease);
}
.nav-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.hero {
  position: relative;
  padding: 140px 0 120px;
  background: linear-gradient(135deg, rgba(8, 21, 43, .92) 0%, rgba(13, 38, 77, .78) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: #fff;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .18);
  color: #fff;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 22px;
  backdrop-filter: blur(6px);
}
.hero h1 {
  font-size: clamp(34px, 6vw, 60px);
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 20px;
  letter-spacing: .01em;
}
.hero h1 .text-gradient {
  background: linear-gradient(90deg, #ffb524, #ffd77a);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-lead {
  max-width: 640px;
  margin: 0 auto 36px;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .85);
}
.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 720px;
  margin: 60px auto 0;
}
.hero-stats .stat {
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius-md);
  padding: 22px 16px;
  backdrop-filter: blur(6px);
}
.hero-stats strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
}
.hero-stats span {
  font-size: 13px;
  color: rgba(255, 255, 255, .7);
}
.features {
  background: var(--surface);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  padding: 34px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 1px solid var(--line);
  transition: var(--ease);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  background: var(--surface);
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #4a8bff);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(34, 102, 255, .22);
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-muted);
}
.categories {
  background: var(--bg);
}
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.category-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  transition: var(--ease);
}
.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.category-media {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.category-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.category-card:hover .category-media img {
  transform: scale(1.05);
}
.category-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 25, 48, 0) 40%, rgba(11, 25, 48, .75) 100%);
}
.category-body {
  padding: 26px 26px 30px;
}
.category-body h3 {
  font-size: 21px;
  font-weight: 800;
  color: var(--navy-900);
  margin-bottom: 10px;
}
.category-body p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.category-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
}
.category-more i {
  transition: transform var(--ease);
}
.category-card:hover .category-more i {
  transform: translateX(4px);
}
.process {
  background: var(--navy-900);
  color: #fff;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.step-card {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius-lg);
  padding: 34px 26px;
  text-align: center;
  position: relative;
  transition: var(--ease);
}
.step-card:hover {
  background: rgba(255, 255, 255, .1);
  transform: translateY(-4px);
}
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #ffd77a);
  color: var(--navy-900);
  font-weight: 800;
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, .7);
}
.stats-band {
  background: linear-gradient(rgba(11, 25, 48, .88), rgba(11, 25, 48, .88)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  padding: 90px 0;
  color: #fff;
  text-align: center;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.stat-item h3 {
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 900;
  color: var(--accent);
}
.stat-item p {
  margin-top: 6px;
  font-size: 15px;
  color: rgba(255, 255, 255, .75);
}
.latest {
  background: var(--surface);
}
.latest-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.latest-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--ease);
  display: flex;
  flex-direction: column;
}
.latest-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
  background: var(--surface);
}
.latest-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.badge {
  display: inline-block;
  background: rgba(34, 102, 255, .1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}
.time {
  font-size: 13px;
  color: var(--text-muted);
}
.latest-card h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
}
.latest-card h3 a {
  transition: var(--ease);
}
.latest-card h3 a:hover {
  color: var(--primary);
}
.latest-card p {
  font-size: 15px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 18px;
}
.read-more {
  margin-top: auto;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.read-more i {
  transition: transform var(--ease);
}
.read-more:hover i {
  transform: translateX(4px);
}
.latest-none {
  text-align: center;
  padding: 60px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--line);
  color: var(--text-muted);
  font-size: 16px;
}
.showcase {
  background: var(--bg);
}
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.showcase-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.showcase-media img {
  width: 100%;
}
.showcase-text h3 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  color: var(--navy-900);
  margin-bottom: 18px;
  line-height: 1.3;
}
.showcase-text p {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.check-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 8px 0;
  font-size: 15px;
}
.check-list i {
  color: var(--primary);
  margin-top: 5px;
}
.faq {
  background: var(--surface);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  background: var(--surface);
  overflow: hidden;
  transition: var(--ease);
}
.faq-item:hover {
  border-color: rgba(34, 102, 255, .3);
}
.faq-item summary {
  padding: 22px 28px;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy-900);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  list-style: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary > span:first-child {
  flex: 1;
}
.faq-item summary .icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(34, 102, 255, .1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform var(--ease);
}
.faq-item[open] summary .icon {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 28px 24px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.85;
}
.cta {
  position: relative;
  padding: 110px 0;
  background: linear-gradient(120deg, rgba(18, 64, 172, .92), rgba(11, 25, 48, .85)), url('/assets/images/backpic/back-3.png') center / cover no-repeat;
  color: #fff;
  text-align: center;
}
.cta h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 16px;
}
.cta p {
  max-width: 560px;
  margin: 0 auto 34px;
  font-size: 17px;
  color: rgba(255, 255, 255, .85);
}
.cta .btn-primary {
  background: linear-gradient(135deg, var(--accent), #ffd77a);
  color: var(--navy-900);
  box-shadow: 0 10px 24px rgba(255, 181, 36, .3);
}
.cta .btn-primary:hover {
  box-shadow: 0 14px 32px rgba(255, 181, 36, .4);
}
.site-footer {
  background: var(--navy-900);
  color: rgba(255, 255, 255, .75);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .brand {
  color: #fff;
  margin-bottom: 14px;
}
.site-footer .brand .brand-accent {
  color: var(--accent);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 320px;
}
.site-footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-links li {
  margin-bottom: 10px;
  font-size: 14px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, .65);
  transition: var(--ease);
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-links i {
  width: 20px;
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .showcase-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .header-inner {
    height: 64px;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px;
    gap: 6px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform: translateY(-120%);
    transition: transform .3s ease;
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .main-nav a {
    text-align: center;
    padding: 14px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .hero {
    padding: 100px 0 72px;
  }
  .hero-stats {
    grid-template-columns: 1fr;
    max-width: 360px;
  }
  .features-grid,
  .categories-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .latest-grid {
    grid-template-columns: 1fr;
  }
  .section-head h2 {
    font-size: 28px;
  }
  .cta {
    padding: 80px 0;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .brand {
    font-size: 20px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* roulang page: category1 */
:root {
            --primary: #1a5cff;
            --primary-dark: #0f3bb5;
            --primary-light: #e8f0ff;
            --accent: #ff7a1a;
            --accent-light: #fff2e8;
            --dark: #0d1b3e;
            --dark-bg: #0b1730;
            --text: #213152;
            --text-weak: #7b8ba7;
            --bg: #f5f7fc;
            --white: #ffffff;
            --border: #e3e8f2;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 10px 40px rgba(13, 27, 62, 0.08);
            --shadow-lg: 0 24px 60px rgba(13, 27, 62, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

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

        /* ---------- Header ---------- */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(227, 232, 242, 0.8);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition);
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            gap: 20px;
        }

        .brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
            line-height: 1.3;
            white-space: nowrap;
        }

        .brand-accent {
            color: var(--primary);
            font-weight: 800;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text);
            position: relative;
            transition: var(--transition);
        }

        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            box-shadow: inset 0 0 0 1px rgba(26, 92, 255, 0.15);
        }

        .nav-toggle {
            display: none;
            background: var(--primary-light);
            color: var(--primary);
            width: 42px;
            height: 42px;
            border-radius: 12px;
            font-size: 1.1rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ---------- Banner / Hero ---------- */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(13, 27, 62, 0.92) 0%, rgba(26, 92, 255, 0.85) 100%);
            padding: 100px 0 90px;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
        }

        .page-banner .banner-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .banner-copy {
            flex: 1;
        }

        .banner-copy h1 {
            color: #fff;
            font-size: 2.6rem;
            line-height: 1.35;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }

        .banner-copy h1 .highlight {
            color: var(--accent);
            position: relative;
            display: inline-block;
        }

        .banner-copy p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.12rem;
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .banner-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }

        .badge-pill {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(8px);
            border-radius: 50px;
            padding: 8px 18px;
            color: #fff;
            font-size: 0.88rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .badge-pill i {
            color: var(--accent);
        }

        .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.2;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(26, 92, 255, 0.35);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(26, 92, 255, 0.45);
        }

        .btn-ghost-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-3px);
        }

        .banner-visual {
            flex: 1;
            position: relative;
            display: flex;
            justify-content: center;
        }

        .banner-visual .visual-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 28px;
            padding: 28px;
            max-width: 400px;
            width: 100%;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
        }

        .visual-card img {
            border-radius: 16px;
            width: 100%;
            height: 200px;
            object-fit: cover;
            margin-bottom: 18px;
        }

        .visual-card .mini-steps {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mini-step {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #fff;
        }

        .mini-step .step-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .mini-step span {
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* ---------- Section base ---------- */
        .section {
            padding: 90px 0;
        }

        .section-alt {
            background: var(--white);
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 14px;
        }

        .section-head p {
            color: var(--text-weak);
            font-size: 1.05rem;
            line-height: 1.8;
        }

        /* ---------- Steps ---------- */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .step-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 38px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .step-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .step-card:hover::before {
            opacity: 1;
        }

        .step-num {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            position: relative;
        }

        .step-num::after {
            content: '';
            position: absolute;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            right: -2px;
            top: -2px;
        }

        .step-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .step-card p {
            font-size: 0.93rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ---------- Feature cards ---------- */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .feature-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .feature-media {
            height: 220px;
            overflow: hidden;
            position: relative;
        }

        .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .feature-card:hover .feature-media img {
            transform: scale(1.05);
        }

        .feature-media .cat-label {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-radius: 50px;
            padding: 6px 14px;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        }

        .feature-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .feature-body p {
            font-size: 0.94rem;
            color: var(--text-weak);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 20px;
        }

        .feature-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .feature-link:hover {
            gap: 14px;
            color: var(--primary-dark);
        }

        /* ---------- Tips list ---------- */
        .tips-section {
            background: linear-gradient(135deg, #0d1b3e 0%, #142b56 50%, #1a5cff 120%);
            color: #fff;
        }

        .tips-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 50px;
            align-items: center;
        }

        .tips-copy h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }

        .tips-copy p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
            font-size: 1.05rem;
        }

        .tips-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .tips-list li {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
            list-style: none;
            font-size: 1.05rem;
            font-weight: 500;
        }

        .tips-list li:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateX(6px);
        }

        .tips-list li i {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 12px;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #fff;
        }

        .tips-visual {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 24px;
            padding: 20px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .tips-visual img {
            border-radius: 16px;
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        .visual-caption {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 8px 4px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        }

        .visual-caption span {
            color: var(--accent);
            font-weight: 700;
        }

        /* ---------- FAQ ---------- */
        .faq-wrap {
            max-width: 850px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            border: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(13, 27, 62, 0.04);
            transition: var(--transition);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: rgba(26, 92, 255, 0.3);
            box-shadow: 0 8px 30px rgba(13, 27, 62, 0.08);
        }

        .faq-question {
            padding: 22px 28px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 1.02rem;
        }

        .faq-question i {
            color: var(--primary);
            font-size: 0.9rem;
            transition: transform 0.3s;
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding-left: 28px;
            padding-right: 28px;
        }

        .faq-answer-inner {
            padding-bottom: 22px;
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.85;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            padding: 100px 0;
            position: relative;
            overflow: hidden;
            color: #fff;
            text-align: center;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 62, 0.92), rgba(26, 92, 255, 0.78));
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 18px;
            line-height: 1.4;
        }

        .cta-content p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 34px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 70px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 0.8fr 0.8fr 1.1fr;
            gap: 44px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand {
            color: #fff;
            font-size: 1.35rem;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.8;
            opacity: 0.7;
            margin-right: 20px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: #fff;
            transform: translateX(4px);
        }

        .footer-links li {
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.65);
        }

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

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 0.88rem;
            opacity: 0.55;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        /* ---------- Responsive ---------- */
        @media screen and (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

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

            .tips-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media screen and (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 74px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                box-shadow: 0 16px 40px rgba(13, 27, 62, 0.16);
                border-radius: 0 0 20px 20px;
                opacity: 0;
                visibility: hidden;
                transform: translateY(-10px);
                transition: var(--transition);
                gap: 4px;
                z-index: 99;
            }

            .main-nav.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }

            .main-nav a {
                padding: 14px 20px;
                border-radius: 12px;
                border: 1px solid transparent;
            }

            .main-nav a.active {
                border-color: rgba(26, 92, 255, 0.15);
            }

            .nav-toggle {
                display: flex;
            }

            .page-banner {
                padding: 80px 0;
            }

            .page-banner .banner-inner {
                flex-direction: column;
                gap: 36px;
            }

            .banner-copy h1 {
                font-size: 2rem;
            }

            .banner-visual .visual-card {
                max-width: 100%;
            }

            .section {
                padding: 64px 0;
            }

            .section-head h2 {
                font-size: 1.75rem;
            }

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

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

            .cta-section {
                background-attachment: scroll;
                padding: 70px 0;
            }

            .cta-content h2 {
                font-size: 2rem;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .brand {
                font-size: 1.1rem;
            }

            .page-banner {
                padding: 60px 0;
            }

            .banner-copy h1 {
                font-size: 1.7rem;
            }

            .banner-badges {
                flex-direction: column;
            }

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

            .btn-group {
                flex-direction: column;
                width: 100%;
            }

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

            .tips-list li {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                animation: none !important;
            }
        }

/* roulang page: category2 */
:root{
  --primary:#1a3a5c;
  --primary-light:#24507c;
  --accent:#e67e22;
  --accent-hover:#d35400;
  --bg:#f7f9fc;
  --bg-dark:#0f1f30;
  --white:#ffffff;
  --text:#25323f;
  --text-weak:#6b7b8d;
  --border:#e3e9f1;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 12px 40px rgba(15,31,48,.10);
  --shadow-sm:0 4px 16px rgba(15,31,48,.07);
  --transition:all .25s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.75;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}

/* Header */
.site-header{background:rgba(255,255,255,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1000}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:72px}
.brand{font-size:1.35rem;font-weight:800;color:var(--primary);letter-spacing:1px;display:inline-flex;align-items:center}
.brand-accent{color:var(--accent);font-weight:900}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{font-size:.95rem;font-weight:500;color:var(--text-weak);padding:8px 4px;position:relative;transition:var(--transition)}
.main-nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent);transition:var(--transition);border-radius:2px}
.main-nav a:hover{color:var(--primary)}
.main-nav a:hover::after{width:100%}
.main-nav a.active{color:var(--primary);font-weight:700}
.main-nav a.active::after{width:100%}
.nav-toggle{display:none;background:none;border:none;font-size:1.4rem;color:var(--primary);cursor:pointer;padding:6px;border-radius:8px}
.nav-toggle:focus{outline:2px solid var(--accent);outline-offset:2px}

/* Hero */
.page-hero{background:linear-gradient(135deg,rgba(15,31,48,.88),rgba(36,80,124,.82)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff;padding:80px 0 64px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;top:-80px;right:-60px;width:300px;height:300px;background:radial-gradient(circle,rgba(230,126,34,.35),transparent 70%);border-radius:50%}
.page-hero .hero-content{position:relative;z-index:2;max-width:760px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);padding:7px 16px;border-radius:40px;font-size:.82rem;letter-spacing:1px;margin-bottom:20px;font-weight:600}
.page-hero h1{font-size:2.6rem;line-height:1.3;font-weight:800;margin-bottom:16px;letter-spacing:1px}
.page-hero h1 span{color:var(--accent)}
.page-hero p{font-size:1.05rem;color:rgba(255,255,255,.86);max-width:620px;margin-bottom:30px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:50px;padding:12px 28px;font-weight:600;font-size:.95rem;cursor:pointer;border:none;transition:var(--transition);letter-spacing:.3px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 10px 26px rgba(230,126,34,.4)}
.btn-outline{background:transparent;color:#fff;border:1.6px solid rgba(255,255,255,.55);padding:10px 26px}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn-ghost{background:var(--primary-light);color:#fff}
.btn-ghost:hover{background:var(--primary);transform:translateY(-2px)}

/* Common sections */
.section{padding:74px 0}
.section-label{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:700;font-size:.85rem;letter-spacing:2px;margin-bottom:10px}
.section-title{font-size:2rem;font-weight:800;color:var(--primary);line-height:1.35;margin-bottom:16px}
.section-sub{font-size:1rem;color:var(--text-weak);max-width:660px;margin-bottom:42px}
.section-head.text-center{text-align:center}
.section-head.text-center .section-sub{margin-left:auto;margin-right:auto}

/* Cards */
.card{background:var(--white);border-radius:var(--radius);border:1px solid var(--border);padding:32px;box-shadow:var(--shadow-sm);transition:var(--transition);height:100%;display:flex;flex-direction:column}
.card:hover{box-shadow:var(--shadow);transform:translateY(-5px);border-color:#d5deea}
.card-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:18px}
.icon-bg-1{background:#eef4fe;color:#2b6cb0}
.icon-bg-2{background:#fdf0e6;color:var(--accent)}
.icon-bg-3{background:#eafaf1;color:#27ae60}
.icon-bg-4{background:#f4eefe;color:#8e44ad}
.card h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.card p{font-size:.92rem;color:var(--text-weak);line-height:1.7;margin-bottom:0}
.card-link{margin-top:auto;padding-top:16px;display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:.88rem}
.card-link:hover{color:var(--accent-hover);gap:10px}

/* Steps */
.steps-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step}
.step-card{background:var(--white);border-radius:var(--radius);border:1px solid var(--border);padding:30px;position:relative;overflow:hidden;transition:var(--transition)}
.step-card::before{counter-increment:step;content:"0" counter(step);position:absolute;top:12px;right:20px;font-size:3.2rem;font-weight:900;color:rgba(26,58,92,.07);line-height:1}
.step-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;font-size:.95rem;margin-bottom:16px}
.step-card h3{font-size:1.05rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.step-card p{font-size:.9rem;color:var(--text-weak);line-height:1.7}

/* FAQ accordion */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:#cdd8e6}
.faq-item.open{border-color:var(--accent);box-shadow:0 6px 20px rgba(230,126,34,.08)}
.faq-q{display:flex;align-items:center;gap:14px;padding:20px 24px;cursor:pointer;font-weight:600;color:var(--primary);font-size:.98rem;background:none;border:none;width:100%;text-align:left;transition:var(--transition)}
.faq-q:hover{color:var(--accent)}
.faq-q .faq-arrow{margin-left:auto;color:var(--accent);transition:transform .3s ease}
.faq-item.open .faq-arrow{transform:rotate(180deg)}
.faq-a{display:none;padding:0 24px 22px;color:var(--text-weak);font-size:.93rem;line-height:1.8}

/* Quick actions */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.quick-item{text-align:center;padding:26px 18px;border-radius:var(--radius);background:var(--white);border:1px solid var(--border);transition:var(--transition)}
.quick-item:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:var(--accent)}
.quick-item i{font-size:1.7rem;color:var(--accent);margin-bottom:12px;display:block}
.quick-item h4{font-size:.95rem;color:var(--primary);font-weight:700;margin-bottom:6px}
.quick-item p{font-size:.8rem;color:var(--text-weak);line-height:1.6;margin:0}

/* Feature split */
.split-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;align-items:center}
.split-image{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.split-image img{width:100%;height:420px;object-fit:cover;border-radius:var(--radius)}
.split-image::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(15,31,48,.32));border-radius:var(--radius)}
.split-content .section-title{font-size:1.8rem}
.ul-checked{margin-top:20px}
.ul-checked li{display:flex;align-items:flex-start;gap:12px;padding:10px 0;color:var(--text);font-size:.96rem;border-bottom:1px dashed var(--border)}
.ul-checked li:last-child{border-bottom:none}
.ul-checked i{color:var(--accent);font-size:1.1rem;margin-top:3px}

/* CTA */
.cta-section{background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:28px;margin:50px 0;padding:60px 48px;color:#fff;position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;top:-50px;right:-30px;width:220px;height:220px;border-radius:50%;background:rgba(230,126,34,.3)}
.cta-section::after{content:"";position:absolute;bottom:-70px;left:20px;width:170px;height:170px;border-radius:50%;background:rgba(255,255,255,.05)}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta-left h2{font-size:1.8rem;font-weight:800;margin-bottom:10px}
.cta-left p{font-size:.95rem;opacity:.85;max-width:480px}
.cta-right{display:flex;gap:14px;flex-wrap:wrap}

/* Footer */
.site-footer{background:var(--bg-dark);color:#a7b8c9;padding-top:68px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:42px;padding-bottom:50px}
.footer-brand .brand{color:#fff;font-size:1.3rem;margin-bottom:16px}
.footer-brand p{font-size:.88rem;line-height:1.8;color:#8ea3b7;max-width:340px}
.footer-col h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:18px;position:relative;padding-bottom:8px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--accent);border-radius:2px}
.footer-links li{margin-bottom:11px;font-size:.89rem}
.footer-links a{color:#8ea3b7;transition:var(--transition);display:inline-flex;align-items:center;gap:6px}
.footer-links a:hover{color:var(--accent);padding-left:4px}
.footer-links li i{color:var(--accent);width:18px;text-align:center;margin-right:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:.82rem;color:#7390a8}

/* Responsive */
@media screen and (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .steps-wrap{grid-template-columns:1fr 1fr}
  .page-hero h1{font-size:2.2rem}
}
@media screen and (max-width:768px){
  .nav-toggle{display:block}
  .main-nav{position:fixed;top:72px;left:0;right:0;background:var(--white);flex-direction:column;align-items:flex-start;padding:20px 28px;gap:8px;border-bottom:1px solid var(--border);box-shadow:var(--shadow);transform:translateY(-120%);opacity:0;pointer-events:none;transition:var(--transition);z-index:999}
  .main-nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .main-nav a{width:100%;padding:12px 0;font-size:1rem;border-bottom:1px solid #f0f2f5}
  .main-nav a:last-child{border-bottom:none}
  .main-nav a::after{display:none}
  .section{padding:56px 0}
  .section-title{font-size:1.6rem}
  .page-hero{padding:60px 0 48px}
  .page-hero h1{font-size:1.85rem}
  .split-grid{grid-template-columns:1fr;gap:34px}
  .split-image img{height:280px}
  .steps-wrap{grid-template-columns:1fr}
  .cta-section{padding:45px 28px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-brand p{max-width:none}
  .hero-actions .btn{flex:1;justify-content:center}
}
@media screen and (max-width:520px){
  .container{padding:0 18px}
  .quick-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:1.6rem}
  .section-title{font-size:1.4rem}
  .cta-inner{flex-direction:column;text-align:center}
  .cta-right{justify-content:center;width:100%}
  .cta-right .btn{flex:1}
  .btn{padding:11px 20px;font-size:.9rem}
}

/* roulang page: article */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #eff6ff;
  --accent: #f59e0b;
  --accent-soft: #fef3c7;
  --success: #10b981;
  --success-soft: #d1fae5;
  --bg: #f8fafc;
  --bg-deep: #0f172a;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-soft: #94a3b8;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;
  --shadow-sm: 0 2px 10px rgba(15,23,42,.06);
  --shadow: 0 8px 24px rgba(15,23,42,.08);
  --shadow-lg: 0 18px 44px rgba(15,23,42,.13);
  --transition: .25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; }

.grid-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.grid-x.grid-margin-x { margin-left: -12px; margin-right: -12px; }
.grid-x.grid-margin-x > .cell { padding-left: 12px; padding-right: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(15,23,42,.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
}
.brand {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
  white-space: nowrap;
  line-height: 1.2;
}
.brand .brand-accent { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  padding: 9px 16px;
  border-radius: var(--radius-full);
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition);
}
.main-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.main-nav a.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 6px 16px rgba(37,99,235,.28);
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  background: var(--white);
  border-radius: 12px;
  font-size: 1.1rem;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.nav-toggle:hover { border-color: var(--primary); color: var(--primary); }

.page-banner {
  position: relative;
  padding: 72px 0;
  background: linear-gradient(120deg, rgba(15,23,42,.93), rgba(37,99,235,.78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.page-banner::after {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(255,255,255,.07);
}
.page-banner::before {
  content: '';
  position: absolute;
  left: -60px;
  bottom: -120px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(37,99,235,.25);
  filter: blur(50px);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
  color: rgba(255,255,255,.85);
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,.85); transition: color var(--transition); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { color: rgba(255,255,255,.4); font-size: .7rem; }
.breadcrumb .current { color: rgba(255,255,255,.6); }
.banner-title {
  font-size: 2rem;
  font-weight: 800;
  max-width: 780px;
  line-height: 1.35;
  position: relative;
  z-index: 1;
  word-break: break-word;
}
.banner-desc {
  margin-top: 12px;
  font-size: 1rem;
  color: rgba(255,255,255,.8);
  max-width: 640px;
  position: relative;
  z-index: 1;
}

.article-section { padding: 56px 0 72px; }
.article-layout { margin-left: -14px; margin-right: -14px; }
.article-layout > .cell { padding-left: 14px; padding-right: 14px; }
.article-main .article-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 40px;
  min-height: 420px;
}
.article-title {
  font-size: 1.7rem;
  line-height: 1.4;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text);
  word-break: break-word;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-muted);
  font-size: .88rem;
  margin-bottom: 24px;
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item i { color: var(--primary); }
.article-divider {
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
  margin-bottom: 28px;
}
.article-content { font-size: 1.02rem; line-height: 1.9; color: var(--text); }
.article-content h2 { font-size: 1.4rem; margin: 2rem 0 1rem; line-height: 1.4; }
.article-content h3 { font-size: 1.2rem; margin: 1.7rem 0 .8rem; }
.article-content h4 { font-size: 1.06rem; margin: 1.4rem 0 .6rem; }
.article-content p { margin: 0 0 1.2rem; }
.article-content ul,
.article-content ol { margin: 0 0 1.2rem 1.3rem; }
.article-content ul li { list-style: disc; margin-bottom: .35rem; }
.article-content ol li { list-style: decimal; margin-bottom: .35rem; }
.article-content a { color: var(--primary); text-decoration: underline; }
.article-content blockquote {
  border-left: 4px solid var(--primary);
  padding: .9rem 1.3rem;
  background: var(--primary-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.4rem 0;
  color: var(--text-muted);
}
.article-content img { border-radius: var(--radius); max-width: 100%; height: auto; margin: 1.2rem 0; box-shadow: var(--shadow-sm); }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.2rem 0; }
.article-content th,
.article-content td { border: 1px solid var(--border); padding: .7rem .9rem; font-size: .92rem; }
.article-content th { background: var(--primary-soft); font-weight: 700; }
.article-tags { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 10px; padding-top: 22px; border-top: 1px solid var(--border); }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--primary-soft);
  color: var(--primary);
  font-size: .82rem;
  font-weight: 600;
}
.article-missing {
  text-align: center;
  padding: 56px 20px;
}
.article-missing i {
  font-size: 3rem;
  color: var(--text-soft);
  margin-bottom: 18px;
}
.article-missing h2 { font-size: 1.5rem; margin-bottom: 10px; }
.article-missing p { color: var(--text-muted); margin-bottom: 26px; }

.article-sidebar .sidebar-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  margin-bottom: 20px;
}
.sidebar-title {
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--text);
}
.sidebar-title i { color: var(--primary); }
.info-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
  font-size: .9rem;
}
.info-list li:last-child { border-bottom: 0; }
.info-list span { color: var(--text-muted); flex-shrink: 0; }
.info-list strong { color: var(--text); text-align: right; word-break: break-word; }
.sidebar-nav li { margin-bottom: 6px; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition);
}
.sidebar-nav a:hover {
  color: var(--primary);
  background: var(--primary-soft);
  padding-left: 18px;
}
.sidebar-nav a i { width: 18px; text-align: center; color: var(--text-soft); transition: color var(--transition); }
.sidebar-nav a:hover i { color: var(--primary); }
.support-card {
  background: linear-gradient(145deg, var(--primary-soft), var(--white));
  border-color: rgba(37,99,235,.16);
}
.support-card p { font-size: .88rem; color: var(--text-muted); margin-bottom: 16px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: .92rem;
  font-weight: 700;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.2;
  text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 16px rgba(37,99,235,.22); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(37,99,235,.3); }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary-dark); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,.15); }
.btn-ghost { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.35); }
.btn-ghost:hover { background: rgba(255,255,255,.2); transform: translateY(-2px); }
.btn-block { width: 100%; }

.category-section { padding: 72px 0; background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 44px; }
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--primary-soft);
  color: var(--primary);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 14px;
}
.section-head h2 { font-size: 1.65rem; font-weight: 800; margin-bottom: 10px; color: var(--text); }
.section-head p { color: var(--text-muted); }
.category-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  height: 100%;
  transition: all var(--transition);
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(37,99,235,.25); }
.category-img { height: 190px; overflow: hidden; }
.category-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.category-card:hover .category-img img { transform: scale(1.06); }
.category-body { padding: 26px; }
.badge {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: .76rem;
  font-weight: 700;
  background: var(--primary-soft);
  color: var(--primary);
  margin-bottom: 12px;
}
.badge-accent { background: var(--accent-soft); color: #b45309; }
.badge-green { background: var(--success-soft); color: #047857; }
.category-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.category-body p { color: var(--text-muted); font-size: .9rem; margin-bottom: 16px; line-height: 1.7; }
.category-link { color: var(--primary); font-weight: 600; font-size: .9rem; display: inline-flex; align-items: center; gap: 6px; }
.category-link i { transition: transform var(--transition); }
.category-card:hover .category-link i { transform: translateX(4px); }

.faq-section { padding: 72px 0; background: var(--bg); }
.faq-grid { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow); }
.faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 22px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i:first-child { color: var(--primary); }
.faq-item .faq-arrow { margin-left: auto; transition: transform var(--transition); color: var(--text-soft); }
.faq-item[open] .faq-arrow { transform: rotate(180deg); }
.faq-item p { padding: 0 22px 20px; color: var(--text-muted); font-size: .92rem; line-height: 1.8; }

.cta-section { padding: 60px 0; background: var(--bg-deep); position: relative; overflow: hidden; }
.cta-section::before {
  content: '';
  position: absolute;
  left: -100px;
  top: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(37,99,235,.28);
  filter: blur(60px);
}
.cta-box {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  background: linear-gradient(120deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  padding: 44px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  box-shadow: 0 20px 50px rgba(37,99,235,.3);
}
.cta-content h2 { color: #fff; font-size: 1.35rem; margin-bottom: 8px; }
.cta-content p { color: rgba(255,255,255,.85); font-size: .92rem; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.site-footer { background: var(--bg-deep); color: rgba(255,255,255,.7); padding: 56px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .brand { color: #fff; font-size: 1.35rem; }
.footer-brand p { font-size: .88rem; line-height: 1.8; margin-top: 14px; opacity: .75; max-width: 340px; }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 700; }
.footer-links li { margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.footer-links a { color: rgba(255,255,255,.65); font-size: .88rem; transition: color var(--transition); }
.footer-links a:hover { color: #fff; }
.footer-links i { color: rgba(255,255,255,.4); width: 16px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  text-align: center;
  font-size: .82rem;
  color: rgba(255,255,255,.4);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(37,99,235,.5);
  outline-offset: 2px;
  border-radius: 6px;
}

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article-main .article-card { padding: 32px 28px; }
  .category-img { height: 170px; }
}

@media (max-width: 768px) {
  .header-inner { min-height: 64px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    z-index: 99;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 14px 18px; border-radius: 12px; }
  .nav-toggle { display: inline-flex; }
  .page-banner { padding: 50px 0; }
  .banner-title { font-size: 1.5rem; }
  .article-section { padding: 36px 0 52px; }
  .article-main .article-card { padding: 26px 20px; }
  .article-title { font-size: 1.4rem; }
  .cta-box { padding: 32px 24px; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { flex: 1; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .faq-item summary { padding: 16px 18px; font-size: .9rem; }
  .faq-item p { padding: 0 18px 16px; }
}

@media (max-width: 520px) {
  .grid-container { padding: 0 16px; }
  .article-layout { margin: 0; }
  .article-layout > .cell { padding: 0; margin-bottom: 20px; }
  .category-img { height: 150px; }
  .category-body { padding: 20px; }
  .article-meta { gap: 10px; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 28px 20px; }
  .cta-actions .btn { width: 100%; }
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --primary-dark: #1e40af;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-main: #f8fafc;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-soft: #e2e8f0;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.08);
            --shadow-hover: 0 12px 32px rgba(37, 99, 235, 0.15);
            --spacing-section: 80px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.6;
            color: var(--text-main);
            background-color: var(--bg-main);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--primary-dark);
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media screen and (max-width: 39.9375em) {
            .container {
                padding: 0 18px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-soft);
            box-shadow: 0 1px 8px rgba(15, 23, 42, 0.05);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .brand {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--text-main);
            white-space: nowrap;
        }

        .brand-accent {
            color: var(--primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav a {
            position: relative;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 2px;
            transition: color 0.25s ease;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.3s ease;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--primary);
        }

        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }

        .nav-toggle:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        @media screen and (max-width: 39.9375em) {
            .site-header {
                position: relative;
            }

            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding: 14px 18px;
            }

            .brand {
                font-size: 18px;
            }

            .nav-toggle {
                display: block;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 10px 0 8px;
            }

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

            .main-nav a {
                width: 100%;
                padding: 12px 0;
                border-bottom: 1px solid var(--border-soft);
            }

            .main-nav a::after {
                display: none;
            }
        }

        @media screen and (min-width: 40em) and (max-width: 63.9375em) {
            .main-nav {
                gap: 20px;
            }

            .brand {
                font-size: 20px;
            }
        }

        /* ===== 页面横幅 ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 40%, var(--primary-dark) 100%);
            color: #fff;
            padding: 80px 0 0;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            padding-bottom: 60px;
        }

        .hero-copy {
            max-width: 620px;
        }

        .hero-copy .tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            letter-spacing: 1px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
        }

        .hero-copy .tagline i {
            color: var(--accent);
        }

        .hero-copy h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .hero-copy p {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
        }

        .hero-stats {
            display: flex;
            gap: 36px;
            margin-top: 10px;
        }

        .hero-stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
        }

        .hero-stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }

        .hero-visual {
            flex: 0 0 360px;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
        }

        @media screen and (max-width: 39.9375em) {
            .page-hero {
                padding: 50px 0 0;
            }

            .hero-copy h1 {
                font-size: 28px;
            }

            .hero-copy p {
                font-size: 15px;
            }

            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }

            .hero-stat-number {
                font-size: 26px;
            }

            .hero-visual {
                flex: 0 0 100%;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--bg-dark);
            color: #fff;
        }

        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }

        .section-eyebrow {
            display: inline-block;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.7;
        }

        .section-alt .section-header h2 {
            color: #fff;
        }

        .section-alt .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-alt .section-eyebrow {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        @media screen and (max-width: 39.9375em) {
            .section {
                padding: 50px 0;
            }

            .section-header h2 {
                font-size: 26px;
            }
        }

        /* ===== 优惠活动三卡 ===== */
        .reward-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .reward-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
        }

        .reward-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .reward-card .icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }

        .icon-blue {
            background: rgba(37, 99, 235, 0.12);
            color: var(--primary);
        }

        .icon-amber {
            background: rgba(245, 158, 11, 0.15);
            color: #d97706;
        }

        .icon-green {
            background: rgba(16, 185, 129, 0.12);
            color: #059669;
        }

        .reward-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .reward-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .reward-card .badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            font-weight: 600;
        }

        @media screen and (max-width: 63.9375em) {
            .reward-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media screen and (max-width: 39.9375em) {
            .reward-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 福利详情列表 ===== */
        .benefit-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 40px;
        }

        .benefit-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .benefit-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-card);
        }

        .benefit-item i {
            color: var(--primary);
            font-size: 18px;
            margin-top: 4px;
        }

        .benefit-item .benefit-text h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-main);
        }

        .benefit-item .benefit-text p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media screen and (max-width: 39.9375em) {
            .benefit-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 图片与文字区块 ===== */
        .split-block {
            display: flex;
            align-items: center;
            gap: 48px;
        }

        .split-block.reverse {
            flex-direction: row-reverse;
        }

        .split-media {
            flex: 0 0 420px;
        }

        .split-media img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .split-copy {
            flex: 1 1 auto;
        }

        .split-copy h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 14px;
            color: #fff;
        }

        .split-copy p {
            font-size: 15px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
        }

        .split-copy ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            margin-bottom: 12px;
        }

        .split-copy ul li i {
            color: var(--accent);
            margin-top: 4px;
        }

        @media screen and (max-width: 63.9375em) {
            .split-block,
            .split-block.reverse {
                flex-direction: column;
                gap: 32px;
            }

            .split-media {
                flex: 0 0 auto;
                width: 100%;
                max-width: 560px;
            }
        }

        /* ===== 会员等级 ===== */
        .member-tier {
            display: flex;
            align-items: stretch;
            gap: 20px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .tier-card {
            flex: 1 1 200px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .tier-card .tier-tag {
            display: inline-block;
            font-size: 14px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .tier-blue .tier-tag {
            background: rgba(37, 99, 235, 0.12);
            color: var(--primary);
        }

        .tier-purple .tier-tag {
            background: rgba(139, 92, 246, 0.12);
            color: #7c3aed;
        }

        .tier-amber .tier-tag {
            background: rgba(245, 158, 11, 0.15);
            color: #d97706;
        }

        .tier-red .tier-tag {
            background: rgba(239, 68, 68, 0.12);
            color: #dc2626;
        }

        .tier-card .tier-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 活动流程 ===== */
        .steps-flow {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            position: relative;
        }

        .steps-flow::before {
            content: "";
            position: absolute;
            top: 44px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: rgba(255, 255, 255, 0.15);
        }

        .step {
            flex: 1;
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 0 12px;
        }

        .step-icon {
            width: 88px;
            height: 88px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.2);
            border: 2px solid var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: var(--accent);
            margin: 0 auto 18px;
            font-weight: 700;
        }

        .step h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .step p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
        }

        @media screen and (max-width: 39.9375em) {
            .steps-flow {
                flex-direction: column;
                gap: 24px;
            }

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

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 40px auto 0;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            padding: 0;
            overflow: hidden;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            background: var(--bg-card);
            transition: background 0.2s ease;
        }

        .faq-question:hover {
            background: rgba(37, 99, 235, 0.03);
        }

        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            display: none;
            padding: 0 24px 20px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            border-top: 1px solid var(--border-soft);
            padding-top: 16px;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA 行动 ===== */
        .cta-section {
            background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
        }

        .cta-container {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            padding: 60px 24px;
            color: #fff;
        }

        .cta-container h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-container p {
            font-size: 16px;
            line-height: 1.7;
            opacity: 0.9;
            margin-bottom: 32px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            padding: 14px 36px;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
            color: var(--primary);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #94a3b8;
            padding-top: 60px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            display: block;
        }

        .footer-brand p {
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            max-width: 300px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.25s ease;
        }

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

        .footer-links li i {
            margin-right: 6px;
            color: var(--accent);
            width: 20px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 18px 0;
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }

        @media screen and (max-width: 63.9375em) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }

        @media screen and (max-width: 39.9375em) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }

        .mt-1 { margin-top: 12px; }
        .mt-2 { margin-top: 20px; }
        .mt-3 { margin-top: 32px; }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
            color: #fff;
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 999px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: border-color 0.25s ease, transform 0.25s ease;
        }

        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }