/* roulang page: index */
:root {
  --color-dark: #0B0B0C;
  --color-card: #161618;
  --color-border: #2A2A2E;
  --color-gold: #C6A87C;
  --color-goldlight: #E2C89A;
  --color-golddark: #9A7B54;
  --color-lightbg: #F4F2EE;
  --color-lightcard: #FFFFFF;
  --color-lightborder: #E3DFD8;
  --color-textmain: #F0EFED;
  --color-textsub: #9B9BA0;
  --color-textdark: #141416;
  --radius-md: 12px;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 12px 36px rgba(0,0,0,0.16);
  --transition-base: all 0.2s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--color-dark);
  color: var(--color-textmain);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
.container-custom {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}
.section-padding {
  padding: 120px 0;
}
@media (max-width: 768px) {
  .section-padding {
    padding: 64px 0;
  }
  .container-custom {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

/* Dock Navigation */
.dock-nav {
  background: rgba(11,11,12,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(198,168,124,0.25);
  border-radius: 100px;
  transition: all 0.2s ease;
}
.dock-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}
.nav-link {
  position: relative;
  color: var(--color-textmain);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 4px;
  text-decoration: none;
  transition: color 0.2s ease;
  letter-spacing: 0.02em;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-goldlight), var(--color-gold));
  border-radius: 2px;
  transition: width 0.2s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--color-gold);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}
.mobile-menu {
  display: none;
  position: absolute;
  top: 72px;
  left: 16px;
  right: 16px;
  background: rgba(11,11,12,0.96);
  border: 1px solid rgba(198,168,124,0.25);
  border-radius: 16px;
  padding: 16px;
  z-index: 60;
}
.mobile-menu.open {
  display: block;
}
.mobile-menu a {
  display: block;
  padding: 12px 16px;
  color: var(--color-textmain);
  font-size: 16px;
  border-radius: 8px;
  transition: background 0.2s ease;
}
.mobile-menu a:hover {
  background: rgba(198,168,124,0.1);
  color: var(--color-gold);
}

/* Hero */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,11,12,0.88) 0%, rgba(11,11,12,0.72) 50%, rgba(11,11,12,0.92) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 140px 0 80px;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.hero-subtitle {
  font-size: 1.125rem;
  color: rgba(240,239,237,0.8);
  max-width: 560px;
}
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(240,239,237,0.85);
  transition: all 0.2s ease;
}
.badge-pill:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* Section Label */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
}
.section-label::before {
  content: '';
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold), transparent);
}
.section-label-light {
  color: var(--color-golddark);
}
.section-label-light::before {
  background: linear-gradient(90deg, var(--color-golddark), transparent);
}

/* Buttons */
.btn-gold {
  background: linear-gradient(135deg, #E2C89A, #C6A87C, #9A7B54);
  color: #111;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  padding: 16px 36px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.btn-gold:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(198,168,124,0.35);
}
.btn-gold:active {
  transform: translateY(0);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.45);
  border-radius: 8px;
  padding: 16px 36px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.btn-outline:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-outline-dark {
  border-color: rgba(20,20,22,0.4);
  color: var(--color-textdark);
}
.btn-outline-dark:hover {
  border-color: var(--color-gold);
  color: var(--color-golddark);
}

/* Value Cards */
.value-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}
.value-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.value-card:hover {
  border-color: rgba(198,168,124,0.6);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
}
.value-card:hover::before {
  opacity: 1;
}
.value-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(198,168,124,0.12);
  border: 1px solid rgba(198,168,124,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--color-gold);
  margin-bottom: 20px;
  transition: all 0.2s ease;
}
.value-card:hover .value-icon {
  background: rgba(198,168,124,0.2);
  transform: scale(1.05);
}

/* Screenshot Carousel */
.carousel-section {
  background: var(--color-lightbg);
}
.carousel-viewport {
  overflow: hidden;
  position: relative;
  border-radius: 16px;
}
.carousel-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.carousel-slide {
  flex: 0 0 100%;
  padding: 0 48px;
}
.carousel-slide img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
  aspect-ratio: 16/9;
  object-fit: cover;
}
.carousel-arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--color-lightborder);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-textdark);
  cursor: pointer;
  transition: all 0.2s ease;
  z-index: 5;
}
.carousel-arrow:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: scale(1.05);
}
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 100px;
  background: rgba(0,0,0,0.2);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}
.carousel-dot.active {
  width: 24px;
  background: var(--color-gold);
}
@media (max-width: 768px) {
  .carousel-slide {
    padding: 0 12px;
  }
  .carousel-arrow {
    width: 36px;
    height: 36px;
  }
}

/* Requirement Cards */
.req-card {
  background: var(--color-lightcard);
  border: 1px solid var(--color-lightborder);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s ease;
  height: 100%;
}
.req-card:hover {
  border-color: var(--color-gold);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.req-icon {
  color: var(--color-gold);
  font-size: 20px;
  width: 28px;
  text-align: center;
  flex-shrink: 0;
}
.req-label {
  color: var(--color-textsub);
  font-size: 13px;
}
.req-value {
  color: var(--color-textdark);
  font-size: 15px;
  font-weight: 600;
}

/* Review Cards */
.review-card {
  background: var(--color-lightcard);
  border-radius: var(--radius-md);
  padding: 28px;
  border-left: 4px solid var(--color-gold);
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
  transition: all 0.2s ease;
  height: 100%;
}
.review-card:hover {
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
  transform: translateY(-2px);
}
.review-stars {
  color: var(--color-gold);
  letter-spacing: 3px;
  font-size: 14px;
}
.user-tag {
  background: rgba(198,168,124,0.15);
  color: var(--color-golddark);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 12px;
  border-radius: 100px;
  white-space: nowrap;
}

/* News Cards */
.news-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  height: 100%;
}
.news-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0,0,0,0.3);
}
.news-card:hover .news-cover img {
  transform: scale(1.04);
}
.news-cover {
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--color-border);
}
.news-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-body {
  padding: 20px 20px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.news-tag {
  font-size: 12px;
  color: var(--color-gold);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.news-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-textmain);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}
.news-card:hover .news-title {
  color: var(--color-gold);
}
.news-summary {
  font-size: 14px;
  color: var(--color-textsub);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: 4px;
}
.news-meta {
  font-size: 12px;
  color: #6B6B70;
  margin-top: auto;
  padding-top: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* CTA Section */
.cta-section {
  position: relative;
  background: var(--color-dark);
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(198,168,124,0.12), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.cta-section .container-custom {
  position: relative;
  z-index: 1;
}

/* Footer */
.footer-link {
  color: var(--color-textsub);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-link:hover {
  color: var(--color-gold);
}
.footer-icon-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-textsub);
  transition: all 0.2s ease;
}
.footer-icon-circle:hover {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: #111;
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fade-up {
  animation: fadeInUp 0.6s ease both;
}
.delay-1 { animation-delay: 0.08s; }
.delay-2 { animation-delay: 0.16s; }
.delay-3 { animation-delay: 0.24s; }
.delay-4 { animation-delay: 0.32s; }

/* Focus visibility */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Text helpers */
.text-gradient-gold {
  background: linear-gradient(135deg, #E2C89A, #C6A87C);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* roulang page: category1 */
:root {
            --bg-dark: #0B0B0C;
            --card-dark: #161618;
            --border-dark: #2A2A2E;
            --gold: #C6A87C;
            --gold-light: #E2C89A;
            --gold-dark: #9A7B54;
            --light-bg: #F4F2EE;
            --light-card: #FFFFFF;
            --light-border: #E3DFD8;
            --text-main: #F0EFED;
            --text-sub: #9B9BA0;
            --text-dark: #141416;
            --text-dark-sub: #6B6B70;
            --radius: 12px;
            --shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
            --shadow-light: 0 12px 40px rgba(0, 0, 0, 0.08);
            --transition: 200ms ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .dock-nav {
            background: rgba(11, 11, 12, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(198, 168, 124, 0.25);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .dock-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 50px rgba(0, 0, 0, 0.45);
        }

        .nav-link {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            padding: 6px 2px;
            transition: color var(--transition);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--gold);
            border-radius: 99px;
            transition: width var(--transition);
        }

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

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

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

        .mobile-menu {
            display: none;
            margin-top: 10px;
            background: rgba(11, 11, 12, 0.95);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(198, 168, 124, 0.2);
            border-radius: 16px;
            padding: 16px;
            flex-direction: column;
            gap: 4px;
        }

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

        .mobile-menu a {
            display: flex;
            align-items: center;
            padding: 12px 14px;
            border-radius: 10px;
            font-size: 15px;
            color: var(--text-main);
            transition: background var(--transition);
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-menu a.active {
            background: rgba(198, 168, 124, 0.1);
            color: var(--gold-light);
        }

        .btn-primary {
            background: linear-gradient(135deg, #E2C89A, #C6A87C, #9A7B54);
            color: #141416;
            box-shadow: 0 8px 30px rgba(198, 168, 124, 0.25);
            transition: all var(--transition);
        }

        .btn-primary:hover {
            filter: brightness(1.12);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(198, 168, 124, 0.35);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-main);
            border: 1px solid var(--gold);
            transition: all var(--transition);
        }

        .btn-secondary:hover {
            border-color: var(--gold-light);
            color: var(--gold-light);
            transform: translateY(-2px);
            background: rgba(198, 168, 124, 0.06);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.12em;
            color: var(--gold);
            text-transform: uppercase;
        }

        .section-label::before {
            content: '';
            display: inline-block;
            width: 28px;
            height: 2px;
            background: var(--gold);
            border-radius: 99px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 8px 16px;
            border-radius: 999px;
            transition: border-color var(--transition), color var(--transition);
        }

        .hero-badge i {
            color: var(--gold);
        }

        .hero-badge:hover {
            border-color: rgba(198, 168, 124, 0.4);
            color: var(--text-main);
        }

        .step-card {
            background: var(--card-dark);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            padding: 32px 28px;
            position: relative;
            transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        .step-card:hover {
            border-color: var(--gold);
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
        }

        .step-number {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 48px;
            font-weight: 700;
            letter-spacing: -0.03em;
            color: rgba(255, 255, 255, 0.06);
            line-height: 1;
            pointer-events: none;
        }

        .feature-card {
            background: var(--light-card);
            border: 1px solid var(--light-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
        }

        .feature-card:hover {
            border-color: var(--gold);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
            transform: translateY(-2px);
        }

        .feature-card img {
            transition: transform 400ms ease;
        }

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

        .req-card {
            background: var(--light-card);
            border: 1px solid var(--light-border);
            border-radius: var(--radius);
            padding: 24px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .req-card:hover {
            border-color: var(--gold);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }

        .req-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(198, 168, 124, 0.12);
            color: var(--gold);
            font-size: 18px;
            flex-shrink: 0;
        }

        .faq-item {
            background: var(--card-dark);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(198, 168, 124, 0.5);
        }

        .faq-item summary {
            list-style: none;
            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;
            user-select: none;
            transition: color var(--transition);
        }

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

        .faq-item summary .faq-arrow {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(198, 168, 124, 0.12);
            color: var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: transform var(--transition), background var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary .faq-arrow {
            transform: rotate(180deg);
            background: rgba(198, 168, 124, 0.28);
        }

        .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
        }

        .footer-link {
            font-size: 14px;
            color: var(--text-sub);
            transition: color var(--transition), padding-left var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .footer-icon-circle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--border-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            font-size: 14px;
            transition: all var(--transition);
        }

        .footer-icon-circle:hover {
            background: var(--gold);
            border-color: var(--gold);
            color: #141416;
            transform: translateY(-3px);
        }

        .cta-glow {
            position: relative;
            overflow: hidden;
        }

        .cta-glow::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(198, 168, 124, 0.18), transparent 70%);
            pointer-events: none;
        }

        .hero-mask {
            position: relative;
            background-image: linear-gradient(rgba(11, 11, 12, 0.55), rgba(11, 11, 12, 0.82)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-up {
            animation: fadeUp 800ms ease both;
        }

        .fade-up-delay-1 {
            animation-delay: 80ms;
        }

        .fade-up-delay-2 {
            animation-delay: 160ms;
        }

        .fade-up-delay-3 {
            animation-delay: 240ms;
        }

        .fade-up-delay-4 {
            animation-delay: 320ms;
        }

        @media (max-width: 767px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }

            .step-card {
                padding: 24px 20px;
            }

            .faq-item summary {
                padding: 18px 16px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 16px 18px;
            }

            .hero-badge {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

        @media (min-width: 768px) {
            .mobile-menu {
                display: none !important;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --brand-dark: #0B0B0C;
  --brand-card: #161618;
  --brand-border: #2A2A2E;
  --brand-gold: #C6A87C;
  --brand-goldlight: #E2C89A;
  --brand-golddark: #9A7B54;
  --brand-light: #F4F2EE;
  --brand-lightcard: #FFFFFF;
  --brand-lightborder: #E3DFD8;
  --text-main-dark: #141416;
  --text-sub-dark: #6B6B70;
  --text-main-light: #F0EFED;
  --text-sub-light: #9B9BA0;
  --radius: 12px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.1);
  --transition: 200ms ease;
}

/* ===== Reset / Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", "SF Pro Display", sans-serif;
  line-height: 1.75;
  background: var(--brand-light);
  color: var(--text-main-dark);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
button {
  cursor: pointer;
  border: none;
  font-family: inherit;
}
input {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}

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

/* ===== 浮动 Dock 导航 ===== */
.dock-nav {
  background: rgba(11, 11, 12, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(198, 168, 124, 0.25);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  transition: transform var(--transition), box-shadow var(--transition);
}
.dock-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}
.nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main-light);
  padding: 6px 2px;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--brand-gold);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav-link:hover {
  color: var(--brand-gold);
}
.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}
.nav-link.active {
  color: var(--brand-gold);
}

/* ===== 移动端菜单 ===== */
.mobile-menu {
  display: none;
  flex-direction: column;
  margin-top: 10px;
  background: rgba(11, 11, 12, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(198, 168, 124, 0.25);
  border-radius: 16px;
  padding: 16px;
  gap: 12px;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  display: flex;
  align-items: center;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main-light);
  transition: background var(--transition);
}
.mobile-menu a:hover {
  background: rgba(198, 168, 124, 0.1);
  color: var(--brand-gold);
}
.mobile-menu a.active {
  background: rgba(198, 168, 124, 0.15);
  color: var(--brand-gold);
}

/* ===== 文章 Banner ===== */
.article-banner {
  background-size: cover;
  background-position: center;
  position: relative;
}
.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 11, 12, 0.82) 0%, rgba(11, 11, 12, 0.65) 50%, rgba(11, 11, 12, 0.88) 100%);
}
.article-banner .banner-content {
  position: relative;
  z-index: 10;
}

/* ===== 动画 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.fade-up {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}
.d-1 {
  animation-delay: 0.08s;
}
.d-2 {
  animation-delay: 0.16s;
}
.d-3 {
  animation-delay: 0.24s;
}

/* ===== 标签徽章 ===== */
.badge-gold {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-gold);
  background: rgba(198, 168, 124, 0.12);
  border: 1px solid rgba(198, 168, 124, 0.25);
}

/* ===== 板块标签 ===== */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-gold);
  letter-spacing: 0.06em;
}
.section-tag::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--brand-gold);
  border-radius: 2px;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #E2C89A, #C6A87C, #9A7B54);
  color: #0B0B0C;
  font-weight: 700;
  font-size: 16px;
  padding: 14px 40px;
  border-radius: 12px;
  transition: all var(--transition);
}
.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(198, 168, 124, 0.25);
}

/* ===== 文章正文排版 ===== */
.article-body {
  font-size: 16px;
  line-height: 1.75;
  color: #3a3a40;
}
.article-body > * + * {
  margin-top: 24px;
}
.article-body h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-main-dark);
  letter-spacing: -0.02em;
  margin-top: 48px;
  padding-top: 8px;
}
.article-body h2::before {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--brand-gold);
  border-radius: 2px;
  margin-bottom: 14px;
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main-dark);
  margin-top: 32px;
  letter-spacing: -0.01em;
}
.article-body p {
  color: #3a3a40;
}
.article-body a {
  color: var(--brand-golddark);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-body a:hover {
  color: var(--brand-gold);
}
.article-body ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 8px;
}
.article-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-gold);
}
.article-body ol {
  list-style: decimal;
  padding-left: 22px;
}
.article-body ol li {
  margin-bottom: 8px;
}
.article-body blockquote {
  border-left: 4px solid var(--brand-gold);
  background: var(--brand-light);
  padding: 16px 24px;
  border-radius: 0 12px 12px 0;
  color: var(--text-sub-dark);
  font-style: normal;
}
.article-body img {
  border-radius: 12px;
  margin: 24px 0;
}
.article-body figcaption {
  font-size: 12px;
  color: #9B9BA0;
  text-align: center;
  margin-top: 4px;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 24px 0;
}
.article-body table th {
  background: var(--brand-dark);
  color: var(--text-main-light);
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
}
.article-body table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--brand-lightborder);
}
.article-body table tr:hover td {
  background: #F7F5F1;
}

/* ===== 资讯卡片（深色） ===== */
.article-card {
  background: var(--brand-card);
  border: 1px solid var(--brand-border);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition);
}
.article-card:hover {
  border-color: var(--brand-gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}
.article-card .card-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.article-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.article-card:hover .card-img img {
  transform: scale(1.05);
}

/* ===== 页脚 ===== */
.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub-light);
  transition: color var(--transition), transform var(--transition);
}
.footer-link:hover {
  color: var(--brand-gold);
  transform: translateX(4px);
}
.footer-icon-circle {
  width: 38px;
  height: 38px;
  border-radius: 9999px;
  border: 1px solid var(--brand-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #9B9BA0;
  transition: all var(--transition);
}
.footer-icon-circle:hover {
  background: var(--brand-gold);
  border-color: var(--brand-gold);
  color: #0B0B0C;
}

/* ===== 行截断 ===== */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .article-body h2 {
    font-size: 1.35rem;
  }
  .article-body h3 {
    font-size: 1.15rem;
  }
  .article-banner .banner-content h1 {
    font-size: 2rem;
  }
}
@media (max-width: 520px) {
  .article-body {
    font-size: 15px;
  }
  .article-body p {
    margin-bottom: 18px;
  }
  .article-body table {
    font-size: 12px;
  }
  .article-body table th,
  .article-body table td {
    padding: 10px 8px;
  }
}