/* roulang page: index */
:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --accent: #f97316;
  --accent-light: #fdba74;
  --bg: #f4f7fc;
  --bg-deep: #0f172a;
  --text: #1e293b;
  --text-light: #64748b;
  --text-lighter: #94a3b8;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius-lg: 24px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, .05);
  --shadow: 0 10px 30px rgba(15, 23, 42, .07);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, .12);
  --transition: .3s ease;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(37, 99, 235, .35);
  outline-offset: 2px;
  border-radius: 6px;
}

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

ul, ol {
  list-style: none;
}

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

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

.section {
  padding: 80px 0;
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}

.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37, 99, 235, .08);
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  padding: 6px 16px;
  border-radius: 999px;
  letter-spacing: .5px;
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  letter-spacing: -1px;
}

.section-head p {
  margin-top: 14px;
  font-size: 17px;
  color: var(--text-light);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  line-height: 1.4;
  text-align: center;
  justify-content: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 8px 22px rgba(37, 99, 235, .28);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(37, 99, 235, .38);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: rgba(255, 255, 255, .1);
  color: var(--white);
  border-color: rgba(255, 255, 255, .65);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, .2);
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-accent {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 8px 22px rgba(249, 115, 22, .28);
}

.btn-accent:hover {
  background: #ea6a0a;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(249, 115, 22, .38);
}

.btn-light {
  background: var(--white);
  color: var(--text);
  border-color: var(--border);
}

.btn-light:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* ===== Header Dock ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px 20px 0;
  pointer-events: none;
}

.header-inner {
  pointer-events: auto;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, .7);
  box-shadow: 0 8px 28px rgba(15, 23, 42, .09);
  border-radius: 999px;
  padding: 8px 10px 8px 22px;
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header:hover .header-inner {
  box-shadow: 0 12px 36px rgba(15, 23, 42, .12);
  background: rgba(255, 255, 255, .97);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.5px;
  flex-shrink: 0;
}

.logo .logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  box-shadow: 0 6px 14px rgba(37, 99, 235, .3);
}

.logo .logo-text {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 12px;
}

.main-nav a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-light);
  transition: all var(--transition);
  white-space: nowrap;
}

.main-nav a:hover {
  background: #f1f5f9;
  color: var(--text);
}

.main-nav a.active {
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(37, 99, 235, .3);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-actions .btn {
  padding: 9px 20px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background var(--transition);
}

.nav-toggle:hover {
  background: #e2e8f0;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 130px 0 100px;
  margin-top: -80px;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, .78) 0%, rgba(15, 23, 42, .52) 50%, rgba(15, 23, 42, .86) 100%);
}

.hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: 60px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249, 115, 22, .35), transparent 65%);
  pointer-events: none;
}

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

.hero .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .2);
  color: var(--white);
  font-size: 14px;
  font-weight: 500;
  padding: 7px 18px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  margin-bottom: 24px;
  letter-spacing: .4px;
}

.hero h1 {
  font-size: 52px;
  line-height: 1.12;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -2px;
  margin-bottom: 18px;
}

.hero p {
  font-size: 18px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .88);
  max-width: 640px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-badges {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.hero-badge {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-badge .badge-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .18);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 18px;
}

.hero-badge .badge-num {
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
}

.hero-badge .badge-label {
  font-size: 13px;
  color: rgba(255, 255, 255, .72);
}

/* ===== Features ===== */
.features {
  background: var(--white);
  padding: 90px 0;
  border-bottom: 1px solid var(--border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s ease;
}

.feature-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  transform: translateY(-6px);
}

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

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--white);
  margin-bottom: 20px;
  box-shadow: 0 8px 20px rgba(37, 99, 235, .25);
}

.feature-icon.blue {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.feature-icon.orange {
  background: linear-gradient(135deg, #f97316, #ea580c);
}

.feature-icon.green {
  background: linear-gradient(135deg, #10b981, #047857);
}

.feature-icon.purple {
  background: linear-gradient(135deg, #8b5cf6, #6d28d9);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.feature-card p {
  font-size: 14.5px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== Category Section ===== */
.category-section {
  background: var(--bg);
  padding: 90px 0;
}

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

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

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

.category-card .card-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.category-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}

.category-card:hover .card-img img {
  transform: scale(1.06);
}

.category-card .card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(15, 23, 42, .65));
}

.category-card .card-body {
  padding: 26px 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.category-card .cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(37, 99, 235, .08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
  width: fit-content;
}

.category-card h3 {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.category-card p {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 18px;
  flex: 1;
}

.card-link {
  font-weight: 600;
  font-size: 15px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.card-link:hover {
  gap: 12px;
}

.card-link i {
  font-size: 13px;
}

/* ===== News Section ===== */
.news-section {
  background: var(--white);
  padding: 90px 0;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 26px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.news-card::after {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(37, 99, 235, .04);
  transition: transform .4s ease;
}

.news-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  transform: translateY(-4px);
}

.news-card:hover::after {
  transform: scale(2.2);
}

.news-card .news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.news-card .news-cat {
  background: rgba(249, 115, 22, .1);
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: .3px;
}

.news-card .news-date {
  font-size: 13px;
  color: var(--text-lighter);
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-card .news-date i {
  font-size: 13px;
}

.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.news-card h3 a {
  color: var(--text);
  transition: color var(--transition);
}

.news-card h3 a:hover {
  color: var(--primary);
}

.news-card p {
  font-size: 14.5px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card .news-more {
  margin-top: auto;
  position: relative;
  z-index: 1;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.news-card .news-more:hover {
  gap: 12px;
}

.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 24px;
  background: var(--bg);
  border-radius: var(--radius);
  color: var(--text-light);
  font-size: 16px;
}

/* ===== Stats & Process ===== */
.stats-section {
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  position: relative;
  padding: 90px 0;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(30, 64, 175, .88));
}

.stats-wrapper {
  position: relative;
  z-index: 1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 70px;
}

.stat-item {
  text-align: center;
  padding: 26px 16px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  transition: background var(--transition), transform var(--transition);
}

.stat-item:hover {
  background: rgba(255, 255, 255, .14);
  transform: translateY(-4px);
}

.stat-item .stat-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 4px;
}

.stat-item .stat-label {
  font-size: 15px;
  color: rgba(255, 255, 255, .8);
}

.steps-wrap {
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius-lg);
  padding: 44px;
  backdrop-filter: blur(10px);
}

.steps-wrap h3 {
  color: var(--white);
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 36px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, rgba(255,255,255,.1), rgba(255,255,255,.5), rgba(255,255,255,.1));
}

.step-item {
  text-align: center;
  position: relative;
}

.step-num {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 8px 24px rgba(37, 99, 235, .4);
  position: relative;
  z-index: 1;
}

.step-item h4 {
  color: var(--white);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.step-item p {
  color: rgba(255, 255, 255, .72);
  font-size: 14px;
  line-height: 1.6;
}

/* ===== Featured ===== */
.featured-section {
  background: var(--bg);
  padding: 90px 0;
}

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

.featured-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.featured-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: transparent;
}

.featured-card .featured-img {
  height: 190px;
  overflow: hidden;
}

.featured-card .featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

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

.featured-card .featured-body {
  padding: 22px 22px 24px;
}

.featured-card .featured-tag {
  display: inline-block;
  background: rgba(37, 99, 235, .08);
  color: var(--primary);
  font-size: 12.5px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.featured-card h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
}

.featured-card h3 a {
  color: var(--text);
}

.featured-card h3 a:hover {
  color: var(--primary);
}

.featured-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.65;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--white);
  padding: 90px 0;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 24px;
  transition: all var(--transition);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 20px 0;
  font-weight: 600;
  font-size: 16.5px;
  color: var(--text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color var(--transition);
  user-select: none;
}

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

.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 14px;
  color: var(--text-lighter);
  transition: transform .3s ease;
  flex-shrink: 0;
}

.faq-item[open] summary {
  color: var(--primary);
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-item .faq-answer {
  padding: 0 0 20px;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.75;
  border-top: 1px dashed var(--border);
  margin-top: -4px;
  padding-top: 14px;
}

/* ===== CTA ===== */
.cta-section {
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  position: relative;
  padding: 90px 0;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, .9), rgba(15, 23, 42, .92));
}

.cta-wrapper {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-wrapper h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.cta-wrapper p {
  font-size: 17px;
  color: rgba(255, 255, 255, .85);
  margin-bottom: 32px;
}

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

.cta-note {
  margin-top: 20px;
  color: rgba(255, 255, 255, .6);
  font-size: 14px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  color: var(--text-lighter);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.6fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  color: var(--white);
}

.footer-brand p {
  font-size: 15px;
  line-height: 1.7;
  max-width: 320px;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, .6);
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--text-lighter);
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: var(--white);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
}

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

.footer-col a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: rgba(255, 255, 255, .55);
  transition: all var(--transition);
}

.footer-col a:hover {
  color: var(--white);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 15px;
  color: rgba(255, 255, 255, .55);
  line-height: 1.6;
}

.footer-contact i {
  color: var(--primary);
  margin-top: 3px;
  width: 18px;
  text-align: center;
}

.footer-contact a {
  color: rgba(255, 255, 255, .6);
}

.footer-contact a:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  padding: 24px 0 28px;
  font-size: 14px;
  color: rgba(255, 255, 255, .38);
}

.footer-bottom .tech-info {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
  background: rgba(255, 255, 255, .04);
  padding: 6px 14px;
  border-radius: 999px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section {
    padding: 64px 0;
  }
  .hero {
    padding: 110px 0 80px;
  }
  .hero h1 {
    font-size: 42px;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
  .category-grid {
    gap: 20px;
  }
  .stats-grid {
    gap: 20px;
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .steps-grid::before {
    display: none;
  }
  .featured-grid {
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 52px 0;
  }
  .section-head {
    margin-bottom: 36px;
  }
  .section-head h2 {
    font-size: 28px;
  }
  .site-header {
    padding: 10px 14px 0;
  }
  .header-inner {
    border-radius: 20px;
    padding: 10px 16px;
  }
  .logo {
    font-size: 17px;
  }
  .logo .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }
  .header-actions .btn {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    display: none;
    border: 1px solid var(--border);
    margin: 0;
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 14px 18px;
    border-radius: 14px;
    font-size: 16px;
  }
  .main-nav a.active {
    background: rgba(37, 99, 235, .08);
    color: var(--primary);
    box-shadow: none;
  }
  .hero {
    margin-top: -74px;
    padding: 96px 0 70px;
  }
  .hero h1 {
    font-size: 34px;
  }
  .hero p {
    font-size: 16px;
  }
  .hero-badges {
    gap: 20px;
    margin-top: 34px;
  }
  .hero-badge .badge-num {
    font-size: 18px;
  }
  .hero-badge .badge-label {
    font-size: 12px;
  }
  .category-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item .stat-num {
    font-size: 32px;
  }
  .steps-wrap {
    padding: 28px 20px;
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .faq-item summary {
    font-size: 15px;
  }
  .cta-wrapper h2 {
    font-size: 28px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .hero {
    padding: 90px 0 60px;
  }
  .hero h1 {
    font-size: 28px;
    letter-spacing: -1px;
  }
  .hero p {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-badges {
    flex-direction: column;
    gap: 14px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .category-card .card-img {
    height: 180px;
  }
  .news-card {
    padding: 20px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .stat-item {
    padding: 20px 12px;
  }
  .stat-item .stat-num {
    font-size: 36px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .section-head p {
    font-size: 15px;
  }
  .cta-wrapper h2 {
    font-size: 24px;
  }
  .cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-grid {
    gap: 28px;
  }
  .faq-item {
    padding: 0 18px;
  }
  .faq-item summary {
    padding: 16px 0;
    font-size: 14.5px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #1a2b4a;
  --primary-light: #233a63;
  --primary-dark: #0f1b30;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --accent-dark: #d97706;
  --bg: #f8fafc;
  --bg-alt: #eef2f7;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(15, 27, 48, 0.08);
  --shadow-lg: 0 18px 50px rgba(15, 27, 48, 0.14);
  --transition: all 0.3s ease;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

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

.container {
  width: min(1200px, 90%);
  margin: 0 auto;
}

/* ===== Header / Dock Navigation ===== */
.site-header {
  position: sticky;
  top: 16px;
  z-index: 100;
  padding: 0 24px;
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 60px;
  padding: 10px 24px;
  box-shadow: 0 6px 30px rgba(15, 27, 48, 0.1);
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  font-size: 18px;
  box-shadow: 0 4px 14px rgba(26, 43, 74, 0.3);
}

.logo-text {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

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

.main-nav a {
  padding: 9px 18px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  background: transparent;
  transition: var(--transition);
}

.main-nav a:hover {
  color: var(--primary);
  background: rgba(26, 43, 74, 0.06);
}

.main-nav a.active {
  color: var(--white);
  background: var(--primary);
  box-shadow: 0 4px 14px rgba(26, 43, 74, 0.25);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(26, 43, 74, 0.04);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-alt);
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 18px;
}

/* ===== Hero ===== */
.category-hero {
  position: relative;
  padding: 100px 0 90px;
  background:
    linear-gradient(120deg, rgba(15, 27, 48, 0.92), rgba(26, 43, 74, 0.78), rgba(35, 58, 99, 0.6)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: var(--white);
  text-align: center;
  overflow: hidden;
}

.category-hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg);
  border-radius: 50% 50% 0 0;
}

.hero-inner {
  max-width: 780px;
  margin: 0 auto;
  padding: 20px 24px 40px;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.2);
  border: 1px solid rgba(245, 158, 11, 0.45);
  color: var(--accent-light);
  font-size: 14px;
  font-weight: 600;
  padding: 7px 18px;
  border-radius: 40px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero-title {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
}

.hero-title span {
  color: var(--accent-light);
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 28px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-btns .btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--white);
}

.hero-btns .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.6);
}

/* ===== Section Base ===== */
.section {
  padding: 80px 0;
}

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

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(245, 158, 11, 0.12);
  padding: 5px 14px;
  border-radius: 30px;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 34px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== Category Cards (赛事分类入口) ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.category-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245, 158, 11, 0.3);
}

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

.category-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  font-size: 26px;
  margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(26, 43, 74, 0.2);
}

.category-card h3 {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 8px;
}

.category-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ===== Match Cards (热门赛事) ===== */
.match-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.match-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 2px 10px rgba(15, 27, 48, 0.04);
}

.match-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

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

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

.match-card:hover .match-media img {
  transform: scale(1.06);
}

.match-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(26, 43, 74, 0.9);
  color: var(--accent-light);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 6px;
  backdrop-filter: blur(4px);
}

.match-body {
  padding: 18px;
}

.match-body .match-time {
  font-size: 13px;
  color: var(--accent-dark);
  font-weight: 500;
  margin-bottom: 6px;
}

.match-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.match-body p {
  font-size: 13px;
  color: var(--text-light);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.match-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-light);
}

.match-meta i {
  color: var(--accent);
}

/* ===== Stats (数据亮点) ===== */
.stats-section {
  background:
    linear-gradient(135deg, rgba(15, 27, 48, 0.95), rgba(26, 43, 74, 0.88)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat fixed;
  padding: 80px 0;
  color: var(--white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  backdrop-filter: blur(6px);
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-number .plus {
  font-size: 28px;
}

.stat-label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
}

/* ===== Steps (观赛流程) ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step-item {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 22px;
  transition: var(--transition);
  text-align: left;
}

.step-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white);
  font-weight: 700;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  box-shadow: 0 6px 16px rgba(245, 158, 11, 0.3);
}

.step-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--primary);
}

.step-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.65;
}

/* ===== News Cards (赛事资讯) ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.news-media {
  height: 170px;
  overflow: hidden;
  position: relative;
}

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

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

.news-cat {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: var(--accent);
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 6px;
}

.news-body {
  padding: 20px;
}

.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-body p {
  font-size: 14px;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.news-date {
  font-size: 12px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-date i {
  color: var(--accent);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 840px;
  margin: 0 auto;
}

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

.faq-item:hover {
  border-color: rgba(245, 158, 11, 0.4);
  box-shadow: var(--shadow);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  color: var(--primary);
}

.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
  background: var(--accent);
  color: var(--white);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 240px;
  padding-bottom: 20px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 0 0 90px;
  position: relative;
  z-index: 2;
}

.cta-box {
  background:
    linear-gradient(120deg, var(--primary), var(--primary-light)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border-radius: 24px;
  padding: 56px;
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-box::before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.15);
  top: -120px;
  right: -100px;
}

.cta-box::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  bottom: -80px;
  left: -60px;
}

.cta-box h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}

.cta-box p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 26px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 2;
}

.cta-box .btn-primary {
  position: relative;
  z-index: 2;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-light);
}

.footer-brand .footer-logo span:last-child {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: var(--white);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-contact li i {
  color: var(--accent);
  margin-top: 4px;
  font-size: 13px;
}

.footer-contact li a {
  color: rgba(255, 255, 255, 0.6);
}

.footer-contact li a:hover {
  color: var(--accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
}

.tech-info {
  color: rgba(255, 255, 255, 0.4);
}

.tech-info i {
  margin-right: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .category-grid,
  .match-grid,
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

@media (max-width: 768px) {
  .site-header {
    top: 10px;
    padding: 0 12px;
  }

  .header-inner {
    padding: 8px 16px;
    border-radius: 40px;
    position: relative;
  }

  .logo-text {
    font-size: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    padding: 16px;
    gap: 6px;
    display: none;
  }

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

  .main-nav a {
    width: 100%;
    text-align: center;
  }

  .header-actions .btn {
    display: none;
  }

  .category-hero {
    padding: 80px 0 70px;
  }

  .hero-title {
    font-size: 34px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 28px;
  }

  .cta-box {
    padding: 40px 24px;
  }

  .cta-box h2 {
    font-size: 24px;
  }

  .cta-box p {
    font-size: 14px;
  }
}

@media (max-width: 520px) {
  .category-grid,
  .match-grid,
  .steps-grid,
  .news-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 15px;
  }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }

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

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }

  .stats-section {
    background-attachment: scroll;
  }
}

/* roulang page: article */
:root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --primary-light: #eef2ff;
            --accent: #06b6d4;
            --accent-light: #e0f7fc;
            --warm: #f59e0b;
            --bg: #f6f7fb;
            --surface: #ffffff;
            --text: #0f172a;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
            --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
            --container: 1200px;
            --section-space: 96px;
            --header-height: 72px;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
        }

        .btn-ghost {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-ghost:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
        }

        .btn-light:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.16);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .badge-accent {
            background: var(--accent-light);
            color: #0e7490;
        }

        .badge-warm {
            background: #fef3c7;
            color: #b45309;
        }

        .badge-primary {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 100;
            padding: 0 16px;
            pointer-events: none;
        }

        .header-inner {
            max-width: 1120px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.86);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.65);
            border-radius: 999px;
            padding: 10px 20px 10px 24px;
            box-shadow: 0 10px 36px rgba(15, 23, 42, 0.1);
            pointer-events: auto;
            position: relative;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 17px;
            color: var(--text);
            letter-spacing: 0.2px;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
            flex-shrink: 0;
        }

        .logo-text {
            background: linear-gradient(135deg, var(--primary-dark), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .main-nav a {
            padding: 8px 18px;
            border-radius: 999px;
            font-weight: 500;
            font-size: 15px;
            color: var(--muted);
            transition: all 0.25s ease;
        }

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

        .main-nav a.active {
            color: var(--primary-dark);
            background: var(--primary-light);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-actions .btn {
            padding: 9px 20px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 22px;
            color: var(--text);
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            transition: background 0.2s ease;
        }

        .nav-toggle:hover {
            background: var(--primary-light);
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 180px 0 84px;
            background-image: linear-gradient(180deg, rgba(15, 23, 42, 0.72), rgba(15, 23, 42, 0.68)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(180deg, transparent, var(--bg));
            pointer-events: none;
        }

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

        .hero-content {
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color 0.2s;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }

        .hero-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: #fff;
            margin-bottom: 20px;
        }

        .hero-content h1 {
            font-size: 42px;
            line-height: 1.3;
            font-weight: 800;
            margin: 0 0 16px;
            letter-spacing: 0.5px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 24px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
        }

        .hero-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            flex-wrap: wrap;
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .hero-meta i {
            font-size: 13px;
        }

        /* ===== 文章正文区 ===== */
        .article-body-section {
            padding: 56px 0 80px;
        }

        .article-wrap {
            max-width: 880px;
            margin: 0 auto;
        }

        .article-content {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 56px 60px;
            font-size: 17px;
            line-height: 1.9;
            color: #1e293b;
            border: 1px solid rgba(226, 232, 240, 0.6);
        }

        .article-content > *:first-child {
            margin-top: 0;
        }

        .article-content > *:last-child {
            margin-bottom: 0;
        }

        .article-content p {
            margin: 0 0 1.4em;
        }

        .article-content h2 {
            font-size: 28px;
            font-weight: 800;
            margin: 1.8em 0 0.7em;
            color: var(--text);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 1.6em 0 0.6em;
            color: var(--text);
            line-height: 1.4;
        }

        .article-content h4 {
            font-size: 18px;
            font-weight: 700;
            margin: 1.4em 0 0.5em;
            color: var(--text);
        }

        .article-content ul,
        .article-content ol {
            padding-left: 1.6em;
            margin: 0 0 1.4em;
        }

        .article-content li {
            margin-bottom: 0.5em;
        }

        .article-content ul li {
            list-style-type: disc;
        }

        .article-content ol li {
            list-style-type: decimal;
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(79, 70, 229, 0.3);
            transition: border-color 0.2s;
        }

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

        .article-content img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin: 24px 0;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 1.6em 0;
            color: #334155;
        }

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

        .article-content code {
            background: #f1f5f9;
            padding: 3px 8px;
            border-radius: 6px;
            font-size: 14px;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
        }

        .article-content th,
        .article-content td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }

        .article-content th {
            background: var(--primary-light);
            font-weight: 600;
        }

        /* ===== 文章底部条 ===== */
        .article-footer-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            margin-top: 32px;
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 20px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            flex-wrap: wrap;
        }

        .tag-list {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .tag-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--muted);
        }

        .tag-item {
            display: inline-block;
            padding: 5px 14px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            transition: all 0.25s ease;
        }

        .tag-item:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 内容未找到 ===== */
        .article-notfound {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 70px 40px;
            text-align: center;
            border: 1px solid var(--border);
        }

        .notfound-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 32px;
            color: var(--primary);
        }

        .article-notfound h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 0 0 12px;
        }

        .article-notfound p {
            color: var(--muted);
            margin: 0 0 28px;
        }

        /* ===== 探索板块 ===== */
        .explore-section {
            padding: 0 0 96px;
        }

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

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            margin: 0 0 10px;
            letter-spacing: 0.5px;
        }

        .section-head p {
            color: var(--muted);
            font-size: 16px;
            margin: 0;
        }

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

        .explore-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .explore-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(79, 70, 229, 0.25);
        }

        .explore-media {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

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

        .explore-card:hover .explore-media img {
            transform: scale(1.06);
        }

        .explore-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, 0.35));
            pointer-events: none;
        }

        .explore-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            color: var(--primary-dark);
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .explore-body {
            padding: 26px 28px 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .explore-body h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 10px;
        }

        .explore-body p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.7;
            margin: 0 0 20px;
            flex: 1;
        }

        .explore-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary);
            transition: gap 0.25s ease;
        }

        .explore-card:hover .explore-more {
            gap: 12px;
        }

        .explore-more i {
            font-size: 13px;
            transition: transform 0.25s ease;
        }

        .explore-card:hover .explore-more i {
            transform: translateX(2px);
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            padding: 0 0 96px;
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary), #7c3aed);
            border-radius: var(--radius-lg);
            padding: 56px 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            color: #fff;
            box-shadow: 0 16px 48px rgba(79, 70, 229, 0.35);
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -90px;
            left: 30%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(6, 182, 212, 0.15);
        }

        .cta-info {
            max-width: 480px;
            position: relative;
            z-index: 1;
        }

        .cta-info h2 {
            font-size: 32px;
            font-weight: 800;
            margin: 0 0 12px;
            line-height: 1.3;
        }

        .cta-info p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin: 0;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ===== FAQ 区块 ===== */
        .faq-section {
            padding: 0 0 96px;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 4px 24px;
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
            overflow: hidden;
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
            border-color: rgba(79, 70, 229, 0.3);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            padding: 18px 0;
            list-style: none;
            gap: 16px;
        }

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

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item p {
            margin: 0 0 20px;
            padding-right: 32px;
            color: var(--muted);
            line-height: 1.75;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 72px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0 0 20px;
            max-width: 280px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #cbd5e1;
            transition: all 0.3s ease;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .footer-col h4 {
            color: #e2e8f0;
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 20px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .footer-col a {
            color: #94a3b8;
            font-size: 14px;
            transition: color 0.25s ease;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            line-height: 1.6;
        }

        .footer-contact i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: #64748b;
            flex-wrap: wrap;
        }

        .tech-info {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .tech-info i {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .header-inner {
                max-width: 960px;
            }

            .main-nav a {
                padding: 8px 14px;
                font-size: 14px;
            }

            .explore-grid {
                gap: 20px;
            }

            .article-content {
                padding: 44px 40px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 72px;
            }

            .header-inner {
                padding: 8px 16px;
                border-radius: 40px;
            }

            .main-nav {
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                border-radius: 20px;
                box-shadow: var(--shadow-lg);
                padding: 12px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                border: 1px solid var(--border);
            }

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

            .main-nav a {
                padding: 12px 20px;
                font-size: 15px;
                border-radius: 12px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .header-actions .btn {
                display: none;
            }

            .article-hero {
                padding: 160px 0 70px;
            }

            .hero-content h1 {
                font-size: 32px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .article-content {
                padding: 32px 24px;
                font-size: 16px;
                border-radius: 16px;
            }

            .article-footer-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 18px 20px;
            }

            .explore-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .cta-box {
                padding: 40px 28px;
                flex-direction: column;
                text-align: center;
            }

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

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

            .faq-section {
                padding-bottom: 72px;
            }

            .cta-section {
                padding-bottom: 72px;
            }

            .explore-section {
                padding-bottom: 72px;
            }

            .article-body-section {
                padding: 40px 0 60px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 8px 14px;
            }

            .logo-text {
                font-size: 15px;
                white-space: nowrap;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .hero-content h1 {
                font-size: 26px;
            }

            .hero-desc {
                font-size: 14px;
            }

            .hero-meta {
                gap: 14px;
                font-size: 13px;
            }

            .article-content {
                padding: 26px 20px;
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 22px;
            }

            .article-content h3 {
                font-size: 18px;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .cta-info h2 {
                font-size: 24px;
            }

            .cta-actions .btn {
                width: 100%;
            }

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

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

            .breadcrumb {
                font-size: 13px;
            }

            .article-footer-bar .btn {
                width: 100%;
            }

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

/* roulang page: category2 */
:root {
  --primary: #1e3a5f;
  --primary-light: #2c5f8a;
  --accent: #4f8df7;
  --accent-rgb: 79, 141, 247;
  --secondary: #ff7a45;
  --bg: #f6f8fb;
  --white: #ffffff;
  --text: #1c2b3a;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.1);
  --container: 1200px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  padding-top: 20px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 1px;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.section-head .eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.section-head h2 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  line-height: 1.25;
}
.section-head .sub {
  color: var(--text-weak);
  max-width: 420px;
  font-size: 15px;
}
.section-head .more-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  border: 1px solid rgba(var(--accent-rgb), 0.3);
  border-radius: 50px;
  transition: var(--transition);
}
.section-head .more-link:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(var(--accent-rgb), 0.28);
}
.btn-primary:hover {
  background: #3b75d6;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(var(--accent-rgb), 0.35);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: #fff;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent);
}

/* ======= Header / Floating Dock ======= */
.site-header {
  position: sticky;
  top: 16px;
  z-index: 1000;
  padding: 0 20px;
}
.header-inner {
  max-width: 1140px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(30, 58, 95, 0.08);
  border-radius: 999px;
  padding: 0 18px 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
  transition: var(--transition);
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 6px 16px rgba(var(--accent-rgb), 0.3);
}
.logo-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.3px;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.main-nav a {
  position: relative;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
}
.main-nav a:hover {
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--accent);
}
.main-nav a.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 16px rgba(var(--accent-rgb), 0.24);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-actions .btn {
  padding: 9px 20px;
  font-size: 14px;
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent);
  font-size: 17px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-toggle:hover {
  background: var(--accent);
  color: #fff;
}

/* ======= Page Banner ======= */
.page-banner {
  position: relative;
  padding: 100px 0 90px;
  border-radius: 0 0 40px 40px;
  overflow: hidden;
  margin: 0 12px 70px;
  background: var(--primary);
}
.banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.5;
}
.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(15, 23, 42, 0.82) 0%, rgba(30, 58, 95, 0.55) 60%, rgba(30, 58, 95, 0.2) 100%);
}
.banner-content {
  position: relative;
  z-index: 2;
  color: #fff;
}
.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 13px;
  font-weight: 700;
  backdrop-filter: blur(8px);
  margin-bottom: 22px;
}
.banner-content h1 {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 18px;
}
.banner-content p {
  font-size: 17px;
  max-width: 620px;
  color: rgba(255, 255, 255, 0.86);
  line-height: 1.8;
  margin-bottom: 28px;
}
.banner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.banner-tags span {
  padding: 7px 16px;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  transition: var(--transition);
}
.banner-tags span:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* ======= Intro / Stats ======= */
.intro-section {
  padding-top: 0;
  margin-top: -52px;
}
.intro-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 36px;
  border: 1px solid var(--border);
  position: relative;
  z-index: 5;
}
.stat-item {
  text-align: center;
  padding: 10px 16px;
}
.stat-num {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 900;
  color: var(--primary);
  letter-spacing: -1px;
  line-height: 1.2;
}
.stat-num small { font-size: 16px; font-weight: 700; color: var(--accent); margin-left: 2px; }
.stat-label {
  margin-top: 8px;
  color: var(--text-weak);
  font-size: 14px;
  font-weight: 600;
}
.intro-desc {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.intro-desc-text h2 {
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
  line-height: 1.3;
}
.intro-desc-text p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 14px;
}
.intro-feature-list {
  display: grid;
  gap: 12px;
}
.intro-feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  transition: var(--transition);
}
.intro-feature-list li:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
  border-color: rgba(var(--accent-rgb), 0.3);
}
.intro-feature-list i {
  color: var(--accent);
  font-size: 17px;
  margin-top: 3px;
}
.intro-feature-list strong {
  display: block;
  color: var(--text);
  font-size: 15px;
  margin-bottom: 2px;
}
.intro-feature-list span {
  color: var(--text-weak);
  font-size: 13.5px;
  line-height: 1.6;
}

/* ======= News Grid ======= */
.news-section { background: #fff; }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(var(--accent-rgb), 0.25);
}
.news-card-cover {
  position: relative;
  height: 190px;
  overflow: hidden;
  background: var(--primary);
}
.news-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.news-card:hover .news-card-cover img {
  transform: scale(1.06);
}
.news-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 12px;
  border-radius: 50px;
  background: rgba(30, 58, 95, 0.85);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}
.news-card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.news-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 10px;
  transition: var(--transition);
}
.news-card-body h3 a:hover { color: var(--accent); }
.news-card-body p {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-weak);
  font-size: 13px;
}
.news-card-meta i { margin-right: 4px; }

/* ======= Featured / Highlights ======= */
.featured-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
}
.featured-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  border: 1px solid var(--border);
  transition: var(--transition);
  background: var(--primary);
}
.featured-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.featured-card > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.featured-card:hover > img { transform: scale(1.05); }
.featured-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 0%, rgba(15, 23, 42, 0.85) 100%);
}
.featured-content {
  position: relative;
  z-index: 2;
  padding: 30px;
  color: #fff;
}
.featured-content .badge {
  background: var(--secondary);
  color: #fff;
  margin-bottom: 12px;
}
.featured-content h3 {
  font-size: 22px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 8px;
}
.featured-content p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 14px;
}
.featured-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  border-bottom: 2px solid var(--secondary);
  padding-bottom: 2px;
  transition: var(--transition);
}
.featured-link:hover { gap: 10px; color: var(--secondary); }
.featured-side {
  display: grid;
  gap: 24px;
}
.featured-side .featured-card {
  min-height: 148px;
  width: 100%;
}

/* ======= Rank List ======= */
.rank-section { background: #fff; }
.rank-list {
  display: grid;
  gap: 12px;
}
.rank-item {
  display: grid;
  grid-template-columns: 52px 1fr 1.6fr 76px;
  align-items: center;
  gap: 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: var(--transition);
}
.rank-item:hover {
  background: #fff;
  border-color: rgba(var(--accent-rgb), 0.25);
  box-shadow: var(--shadow-md);
}
.rank-num {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.rank-item:nth-child(1) .rank-num { background: linear-gradient(135deg, #f59e0b, #f97316); }
.rank-item:nth-child(2) .rank-num { background: linear-gradient(135deg, #94a3b8, #64748b); }
.rank-item:nth-child(3) .rank-num { background: linear-gradient(135deg, #d97706, #b45309); }
.rank-team { display: flex; align-items: center; gap: 14px; }
.rank-team-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
}
.rank-team strong { font-size: 16px; color: var(--text); display: block; }
.rank-team span { font-size: 13px; color: var(--text-weak); }
.rank-bar {
  height: 8px;
  border-radius: 99px;
  background: #e7edf3;
  overflow: hidden;
}
.rank-bar span {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), #3b75d6);
  transition: width 1s ease;
}
.rank-rate {
  font-weight: 800;
  color: var(--primary);
  font-size: 15px;
  text-align: right;
}

/* ======= Schedule Timeline ======= */
.schedule-section {
  background: linear-gradient(180deg, #f6f8fb 0%, #eef2f7 100%);
}
.schedule-list {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
}
.schedule-list::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), rgba(var(--accent-rgb), 0.1));
}
.schedule-item {
  position: relative;
  padding: 20px 0 20px 68px;
}
.schedule-dot {
  position: absolute;
  left: 12px;
  top: 32px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.15);
}
.schedule-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  transition: var(--transition);
}
.schedule-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
  border-color: rgba(var(--accent-rgb), 0.25);
}
.schedule-date {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 140px;
}
.schedule-date .date-box {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 1.2;
}
.schedule-date .date-box strong { font-size: 18px; font-weight: 800; }
.schedule-date .date-box span { font-size: 11px; opacity: 0.8; }
.schedule-meta { flex: 1; min-width: 200px; }
.schedule-meta h4 { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.schedule-meta p { font-size: 13.5px; color: var(--text-weak); }
.schedule-status {
  padding: 7px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent);
  white-space: nowrap;
}

/* ======= FAQ ======= */
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(var(--accent-rgb), 0.3); }
.faq-item.open { box-shadow: var(--shadow-md); }
.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  text-align: left;
  background: transparent;
  transition: var(--transition);
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 24px 22px;
  color: var(--text-weak);
  font-size: 14.5px;
  line-height: 1.85;
}

/* ======= CTA ======= */
.cta-section {
  position: relative;
  padding: 90px 0;
  overflow: hidden;
  border-radius: 40px;
  margin: 0 12px;
  background: var(--primary);
}
.cta-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.4;
}
.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15, 23, 42, 0.9) 0%, rgba(30, 58, 95, 0.7) 100%);
}
.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  max-width: 640px;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 900;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.cta-content p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 30px;
  line-height: 1.8;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ======= Footer ======= */
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.82);
  padding: 80px 0 0;
  margin-top: 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1.2fr;
  gap: 40px;
  padding-bottom: 46px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.footer-logo .logo-icon {
  background: linear-gradient(135deg, var(--accent), #f59e0b);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.68);
  max-width: 320px;
}
.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 22px;
}
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: translateY(-4px);
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.footer-col ul { display: grid; gap: 12px; }
.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.68);
  transition: var(--transition);
  display: inline-block;
}
.footer-col a:hover {
  color: #fff;
  transform: translateX(3px);
}
.footer-contact li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.68);
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.7;
}
.footer-contact i { color: var(--accent); width: 16px; }
.footer-contact a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom .tech-info {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-bottom i { color: rgba(255, 255, 255, 0.35); }

/* ======= Responsive ======= */
@media (max-width: 1024px) {
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-grid { grid-template-columns: 1fr; }
  .intro-desc { grid-template-columns: 1fr; }
}

@media (max-width: 868px) {
  .hero { padding-top: 22px; }
  .main-nav {
    position: absolute;
    top: calc(100% + 14px);
    left: 0;
    right: 0;
    background: #fff;
    border-radius: 20px;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.14);
    border: 1px solid var(--border);
    display: none;
    gap: 6px;
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    padding: 13px 18px;
    border-radius: 12px;
    font-size: 15px;
  }
  .main-nav a.active { box-shadow: none; }
  .nav-toggle {
    display: flex;
  }
  .header-actions .btn { display: none; }
  .header-inner { padding: 0 14px 0 18px; }
}

@media (max-width: 768px) {
  body { padding-top: 12px; }
  .section { padding: 56px 0; }
  .page-banner {
    padding: 70px 0 64px;
    margin: 0 8px 56px;
    border-radius: 0 0 28px 28px;
  }
  .cta-section { margin: 0 8px; border-radius: 28px; }
  .news-grid { grid-template-columns: 1fr; }
  .rank-item {
    grid-template-columns: 48px 1fr 70px;
    gap: 14px;
  }
  .rank-bar { display: none; }
  .schedule-card { padding: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 36px; }
  .section-head { flex-direction: column; align-items: flex-start; margin-bottom: 28px; }
  .intro-stats { padding: 24px; row-gap: 28px; }
  .stat-num { font-size: 30px; }
  .footer-bottom { justify-content: center; text-align: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .logo-text { font-size: 15px; }
  .logo-icon { width: 34px; height: 34px; font-size: 14px; }
  .intro-stats { grid-template-columns: 1fr 1fr; padding: 20px 12px; gap: 18px; }
  .stat-item { padding: 4px; }
  .banner-tags { gap: 8px; }
  .banner-content h1 { font-size: 32px; }
  .featured-card { min-height: 260px; }
  .featured-content { padding: 20px; }
  .featured-content h3 { font-size: 18px; }
  .schedule-item { padding-left: 52px; }
  .schedule-date .date-box { width: 44px; height: 44px; }
  .cta-buttons .btn { width: 100%; justify-content: center; }
  .footer-bottom { flex-direction: column; }
}

/* roulang page: category3 */
:root{
  --primary:#7c3aed;
  --primary-light:#8b5cf6;
  --primary-dark:#6d28d9;
  --accent:#f59e0b;
  --accent-light:#fbbf24;
  --bg-light:#f8fafc;
  --bg-white:#ffffff;
  --bg-dark:#0f172a;
  --bg-dark-2:#1e293b;
  --text-main:#1e293b;
  --text-body:#475569;
  --text-weak:#94a3b8;
  --border:#e2e8f0;
  --border-light:#f1f5f9;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
  --shadow-md:0 8px 24px rgba(0,0,0,.08);
  --shadow-lg:0 20px 40px rgba(0,0,0,.12);
  --transition:.28s ease;
}

*,*::before,*::after{
  box-sizing:border-box;
  margin:0;
  padding:0;
}
html{
  scroll-behavior:smooth;
}
body{
  font-family:"Inter","PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  background:var(--bg-light);
  color:var(--text-main);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{
  max-width:100%;
  display:block;
}
a{
  text-decoration:none;
  color:inherit;
}
button{
  font-family:inherit;
  border:none;
  cursor:pointer;
  background:none;
}
ul,ol{
  list-style:none;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ===== Header Dock ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  padding:16px 24px 0;
  background:transparent;
}
.header-inner{
  max-width:1120px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border:1px solid rgba(226,232,240,.8);
  border-radius:100px;
  padding:12px 28px;
  box-shadow:0 8px 32px rgba(0,0,0,.08);
  transition:box-shadow var(--transition);
}
.header-inner:hover{
  box-shadow:0 12px 40px rgba(0,0,0,.1);
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-icon{
  width:38px;
  height:38px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:12px;
  color:#fff;
  font-size:16px;
  box-shadow:0 4px 12px rgba(124,58,237,.28);
}
.logo-text{
  font-weight:800;
  font-size:17px;
  letter-spacing:.5px;
  color:var(--text-main);
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
}
.main-nav a{
  padding:8px 18px;
  border-radius:100px;
  font-size:14px;
  font-weight:600;
  color:var(--text-body);
  transition:all var(--transition);
  white-space:nowrap;
}
.main-nav a:hover{
  color:var(--primary);
  background:rgba(124,58,237,.08);
}
.main-nav a.active{
  color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  box-shadow:0 4px 14px rgba(124,58,237,.3);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 22px;
  border-radius:100px;
  font-size:14px;
  font-weight:600;
  transition:all var(--transition);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;
  box-shadow:0 4px 16px rgba(124,58,237,.28);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(124,58,237,.36);
}
.btn-outline{
  border:2px solid var(--border);
  color:var(--text-body);
  background:#fff;
}
.btn-outline:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:rgba(124,58,237,.04);
}
.btn-light{
  background:#fff;
  color:var(--primary-dark);
  box-shadow:0 4px 16px rgba(255,255,255,.2);
}
.btn-light:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(255,255,255,.3);
}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  color:var(--text-body);
  font-size:18px;
  background:var(--border-light);
  transition:all var(--transition);
}
.nav-toggle:hover{
  background:rgba(124,58,237,.1);
  color:var(--primary);
}

/* ===== Page Banner ===== */
.page-banner{
  position:relative;
  padding:80px 0 64px;
  background:linear-gradient(135deg,var(--bg-dark) 0%,#2d1b69 55%,rgba(124,58,237,.35) 100%);
  overflow:hidden;
  isolation:isolate;
}
.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.22;
  z-index:-1;
}
.page-banner::after{
  content:"";
  position:absolute;
  top:-60%;
  right:-20%;
  width:520px;
  height:520px;
  background:radial-gradient(circle,rgba(139,92,246,.4),transparent 60%);
  border-radius:50%;
  z-index:-1;
}
.banner-content{
  max-width:860px;
  position:relative;
  z-index:1;
}
.banner-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 18px;
  border-radius:100px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.18);
  color:#e9d5ff;
  font-size:13px;
  font-weight:600;
  letter-spacing:1px;
  margin-bottom:22px;
  backdrop-filter:blur(4px);
}
.page-banner h1{
  font-size:42px;
  line-height:1.25;
  color:#fff;
  font-weight:800;
  margin-bottom:16px;
  letter-spacing:-.5px;
}
.page-banner h1 span{
  background:linear-gradient(90deg,var(--accent-light),#fde68a);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.page-banner .banner-desc{
  font-size:17px;
  color:rgba(226,232,240,.82);
  max-width:640px;
  line-height:1.8;
  margin-bottom:28px;
}
.banner-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:24px;
  font-size:14px;
  color:rgba(226,232,240,.65);
}
.breadcrumb a{
  color:rgba(226,232,240,.8);
  transition:color var(--transition);
}
.breadcrumb a:hover{
  color:#fff;
}
.breadcrumb i{
  font-size:11px;
  opacity:.6;
}

/* ===== Quick Guide Section ===== */
.section{
  padding:84px 0;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary);
  font-weight:700;
  font-size:13px;
  letter-spacing:2px;
  text-transform:uppercase;
  padding:6px 16px;
  border-radius:100px;
  background:rgba(124,58,237,.08);
  margin-bottom:14px;
}
.section-title{
  font-size:32px;
  font-weight:800;
  line-height:1.3;
  color:var(--text-main);
  letter-spacing:-.5px;
}
.section-title em{
  font-style:normal;
  color:var(--primary);
}
.section-sub{
  font-size:16px;
  color:var(--text-body);
  max-width:560px;
  margin-top:8px;
  line-height:1.75;
}
.section-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  transition:gap var(--transition);
  padding:8px 20px;
  border-radius:100px;
  background:rgba(124,58,237,.06);
}
.section-link:hover{
  gap:14px;
  background:rgba(124,58,237,.12);
}

/* Quick Steps */
.quick-guide{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.guide-card{
  position:relative;
  background:var(--bg-white);
  border-radius:var(--radius-lg);
  padding:32px 24px 28px;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border-light);
  transition:all var(--transition);
  overflow:hidden;
}
.guide-card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  opacity:0;
  transition:opacity var(--transition);
}
.guide-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:rgba(124,58,237,.2);
}
.guide-card:hover::before{
  opacity:1;
}
.guide-step{
  width:52px;
  height:52px;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  font-weight:800;
  color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  box-shadow:0 6px 16px rgba(124,58,237,.22);
  margin-bottom:18px;
}
.guide-card:nth-child(2) .guide-step{background:linear-gradient(135deg,#f59e0b,#fbbf24);box-shadow:0 6px 16px rgba(245,158,11,.25);}
.guide-card:nth-child(3) .guide-step{background:linear-gradient(135deg,#10b981,#34d399);box-shadow:0 6px 16px rgba(16,185,129,.25);}
.guide-card:nth-child(4) .guide-step{background:linear-gradient(135deg,#f43f5e,#fb7185);box-shadow:0 6px 16px rgba(244,63,94,.22);}
.guide-card h3{
  font-size:18px;
  font-weight:700;
  margin-bottom:10px;
  color:var(--text-main);
}
.guide-card p{
  font-size:14px;
  color:var(--text-body);
  line-height:1.7;
  margin-bottom:16px;
}
.guide-link{
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:gap var(--transition);
}
.guide-link:hover{
  gap:12px;
}

/* ===== Detail Sections ===== */
.detail-section{
  padding:70px 0;
  border-top:1px solid var(--border-light);
}
.detail-section:nth-child(even){
  background:var(--bg-white);
}
.detail-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:60px;
  align-items:center;
}
.detail-grid.reverse .detail-media{
  order:2;
}
.detail-grid.reverse .detail-content{
  order:1;
}
.detail-content .badge-mini{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  border-radius:100px;
  background:var(--primary);
  color:#fff;
  font-size:12px;
  font-weight:700;
  letter-spacing:1px;
  margin-bottom:14px;
}
.detail-content h2{
  font-size:30px;
  font-weight:800;
  line-height:1.3;
  margin-bottom:14px;
  color:var(--text-main);
  letter-spacing:-.5px;
}
.detail-content .lead{
  font-size:16px;
  color:var(--text-body);
  line-height:1.8;
  margin-bottom:20px;
}
.feature-list{
  margin-bottom:24px;
}
.feature-list li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:10px 0;
  font-size:15px;
  color:var(--text-body);
}
.feature-list li i{
  width:22px;
  height:22px;
  border-radius:50%;
  background:rgba(124,58,237,.1);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:10px;
  margin-top:4px;
  flex-shrink:0;
}
.detail-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  min-height:340px;
}
.detail-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  min-height:340px;
  transition:transform .45s ease;
}
.detail-media:hover img{
  transform:scale(1.04);
}
.media-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(15,23,42,.8));
  display:flex;
  align-items:flex-end;
  padding:28px;
}
.overlay-text h4{
  color:#fff;
  font-size:18px;
  font-weight:700;
  margin-bottom:4px;
}
.overlay-text p{
  color:rgba(226,232,240,.8);
  font-size:14px;
}

/* Panel card */
.panel-card{
  background:var(--bg-white);
  border-radius:var(--radius-lg);
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:box-shadow var(--transition);
}
.panel-card:hover{
  box-shadow:var(--shadow-md);
}
.panel-head{
  padding:22px 28px;
  border-bottom:1px solid var(--border-light);
  background:var(--bg-light);
  display:flex;
  align-items:center;
  gap:12px;
}
.panel-head i{
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
}
.panel-head h3{
  font-size:17px;
  font-weight:700;
  color:var(--text-main);
}
.panel-body{
  padding:24px 28px;
}
.panel-body ol{
  counter-reset:step-counter;
}
.panel-body ol li{
  position:relative;
  padding:12px 0 12px 52px;
  font-size:15px;
  color:var(--text-body);
  border-bottom:1px dashed var(--border-light);
  counter-increment:step-counter;
}
.panel-body ol li:last-child{
  border-bottom:none;
}
.panel-body ol li::before{
  content:counter(step-counter);
  position:absolute;
  left:0;
  top:12px;
  width:30px;
  height:30px;
  border-radius:50%;
  background:rgba(124,58,237,.1);
  color:var(--primary);
  font-size:13px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
}
.panel-body ol li strong{
  color:var(--text-main);
  font-weight:600;
}
.panel-note{
  margin-top:18px;
  padding:14px 18px;
  background:rgba(245,158,11,.08);
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:13px;
  color:#92400e;
  line-height:1.6;
}
.panel-note i{
  margin-right:6px;
}

/* ===== Pricing Cards ===== */
.pricing-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.price-card{
  background:var(--bg-white);
  border-radius:var(--radius-lg);
  padding:36px 32px;
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-sm);
  position:relative;
  text-align:center;
  transition:all var(--transition);
}
.price-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
}
.price-card.featured{
  border:2px solid var(--primary);
  box-shadow:0 12px 32px rgba(124,58,237,.14);
}
.price-card .price-tag{
  position:absolute;
  top:-12px;
  left:50%;
  transform:translateX(-50%);
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;
  font-size:12px;
  font-weight:700;
  padding:4px 18px;
  border-radius:100px;
  white-space:nowrap;
  box-shadow:0 4px 12px rgba(124,58,237,.3);
}
.price-icon{
  width:56px;
  height:56px;
  border-radius:18px;
  margin:0 auto 18px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  color:#fff;
}
.price-icon.c1{background:var(--primary);}
.price-icon.c2{background:linear-gradient(135deg,var(--accent),#f97316);}
.price-icon.c3{background:linear-gradient(135deg,#10b981,#059669);}
.price-card h3{
  font-size:19px;
  font-weight:700;
  margin-bottom:6px;
}
.price-card .sub{
  font-size:14px;
  color:var(--text-weak);
  margin-bottom:20px;
}
.price-card .amount{
  font-size:34px;
  font-weight:800;
  color:var(--text-main);
  margin-bottom:4px;
}
.price-card .amount small{
  font-size:14px;
  font-weight:500;
  color:var(--text-weak);
}
.price-card .unit{
  font-size:13px;
  color:var(--text-weak);
  margin-bottom:24px;
}
.price-features{
  text-align:left;
  margin-bottom:24px;
}
.price-features li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:6px 0;
  font-size:14px;
  color:var(--text-body);
}
.price-features li i{
  color:var(--primary);
  font-size:13px;
  margin-top:4px;
}
.price-features li.dim{
  color:var(--text-weak);
  opacity:.7;
}
.price-card .btn{
  width:100%;
  justify-content:center;
}

/* ===== Stats Strip ===== */
.stats-strip{
  background:linear-gradient(135deg,var(--bg-dark),#1e1b4b);
  padding:56px 0;
  position:relative;
  overflow:hidden;
  isolation:isolate;
}
.stats-strip::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  opacity:.12;
  z-index:-1;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
}
.stat-item{
  text-align:center;
  padding:24px 16px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(8px);
  transition:all var(--transition);
}
.stat-item:hover{
  background:rgba(255,255,255,.1);
  transform:translateY(-4px);
}
.stat-number{
  font-size:38px;
  font-weight:800;
  color:#fff;
  line-height:1.2;
  margin-bottom:6px;
  letter-spacing:-1px;
}
.stat-number span{
  font-size:20px;
  font-weight:700;
  color:var(--accent-light);
  margin-left:2px;
}
.stat-label{
  font-size:14px;
  color:rgba(226,232,240,.75);
  font-weight:500;
}
.stat-icon{
  font-size:24px;
  color:var(--accent-light);
  margin-bottom:12px;
  display:block;
}

/* ===== Security Section ===== */
.security-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.security-card{
  display:flex;
  gap:20px;
  background:var(--bg-white);
  border-radius:var(--radius-lg);
  padding:26px;
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-sm);
  transition:all var(--transition);
}
.security-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:rgba(124,58,237,.2);
}
.sec-icon{
  width:52px;
  height:52px;
  flex-shrink:0;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  background:rgba(124,58,237,.12);
  color:var(--primary);
}
.security-card:nth-child(2) .sec-icon{background:rgba(16,185,129,.14);color:#059669;}
.security-card:nth-child(3) .sec-icon{background:rgba(245,158,11,.15);color:#d97706;}
.security-card:nth-child(4) .sec-icon{background:rgba(244,63,94,.12);color:#e11d48;}
.sec-body h3{
  font-size:18px;
  font-weight:700;
  margin-bottom:8px;
  color:var(--text-main);
}
.sec-body p{
  font-size:14px;
  color:var(--text-body);
  line-height:1.7;
}

/* ===== FAQ ===== */
.faq-section{
  background:var(--bg-white);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:48px;
  border:1px solid var(--border-light);
}
.faq-list{
  max-width:800px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--border-light);
}
.faq-item:last-child{
  border-bottom:none;
}
.faq-q{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  padding:20px 8px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--text-main);
  transition:color var(--transition);
  background:none;
  width:100%;
  text-align:left;
}
.faq-q:hover{
  color:var(--primary);
}
.faq-q i{
  font-size:14px;
  color:var(--text-weak);
  transition:transform var(--transition);
  flex-shrink:0;
}
.faq-item.open .faq-q i{
  transform:rotate(180deg);
  color:var(--primary);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-a-inner{
  padding:0 8px 20px;
  font-size:15px;
  color:var(--text-body);
  line-height:1.8;
}

/* ===== CTA ===== */
.cta-section{
  padding:80px 0;
}
.cta-box{
  position:relative;
  background:linear-gradient(120deg,var(--bg-dark),#312e81);
  border-radius:28px;
  padding:64px 48px;
  text-align:center;
  overflow:hidden;
  isolation:isolate;
  box-shadow:var(--shadow-lg);
}
.cta-box::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.12;
  z-index:-1;
}
.cta-box::after{
  content:"";
  position:absolute;
  bottom:-80px;
  left:-80px;
  width:280px;
  height:280px;
  background:radial-gradient(circle,rgba(139,92,246,.35),transparent 60%);
  border-radius:50%;
  z-index:-1;
}
.cta-box h2{
  font-size:34px;
  color:#fff;
  font-weight:800;
  margin-bottom:16px;
  line-height:1.3;
}
.cta-box p{
  font-size:17px;
  color:rgba(226,232,240,.8);
  max-width:620px;
  margin:0 auto 30px;
  line-height:1.8;
}
.cta-actions{
  display:flex;
  justify-content:center;
  gap:16px;
  flex-wrap:wrap;
}
.btn-lg{
  padding:14px 36px;
  font-size:16px;
}

/* ===== Footer ===== */
.site-footer{
  background:var(--bg-dark);
  padding:64px 0 0;
  color:rgba(226,232,240,.75);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.footer-logo .logo-icon{
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:15px;
}
.footer-logo span{
  font-size:17px;
  font-weight:700;
  color:#fff;
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(226,232,240,.6);
  max-width:300px;
  margin-bottom:24px;
}
.footer-social{
  display:flex;
  gap:12px;
}
.footer-social a{
  width:38px;
  height:38px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.1);
  display:flex;
  align-items:center;
  justify-content:center;
  color:rgba(226,232,240,.7);
  font-size:15px;
  transition:all var(--transition);
}
.footer-social a:hover{
  background:var(--primary);
  color:#fff;
  transform:translateY(-3px);
  box-shadow:0 6px 16px rgba(124,58,237,.3);
}
.footer-col h4{
  font-size:18px;
  font-weight:700;
  color:#fff;
  margin-bottom:22px;
  position:relative;
  padding-bottom:12px;
}
.footer-col h4::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:32px;
  height:3px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.footer-col ul li{
  margin-bottom:12px;
}
.footer-col ul li a{
  font-size:14px;
  color:rgba(226,232,240,.65);
  transition:all var(--transition);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.footer-col ul li a:hover{
  color:#fff;
  padding-left:6px;
}
.footer-col ul li a i{
  font-size:12px;
  opacity:.5;
}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(226,232,240,.65);
}
.footer-contact li i{
  color:var(--accent-light);
  font-size:14px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:24px 0;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(226,232,240,.45);
}
.tech-info i{
  margin-right:6px;
  color:var(--accent-light);
}

/* ===== Float Chat ===== */
.float-chat{
  position:fixed;
  bottom:28px;
  right:28px;
  z-index:999;
}
.chat-btn{
  width:56px;
  height:56px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:#fff;
  font-size:22px;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 28px rgba(124,58,237,.35);
  transition:all var(--transition);
  position:relative;
  cursor:pointer;
}
.chat-btn:hover{
  transform:scale(1.08);
  box-shadow:0 12px 36px rgba(124,58,237,.4);
}
.chat-btn::after{
  content:"";
  position:absolute;
  width:14px;
  height:14px;
  background:#22c55e;
  border:2.5px solid #fff;
  border-radius:50%;
  bottom:2px;
  right:2px;
}

/* ===== Animation ===== */
@keyframes fadeUp{
  from{
    opacity:0;
    transform:translateY(28px);
  }
  to{
    opacity:1;
    transform:translateY(0);
  }
}
.fade-up{
  opacity:0;
}
.fade-up.visible{
  animation:fadeUp .6s ease forwards;
}
.delay-1{animation-delay:.1s;}
.delay-2{animation-delay:.2s;}
.delay-3{animation-delay:.3s;}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .container{
    padding:0 20px;
  }
  .quick-guide{
    grid-template-columns:repeat(2,1fr);
  }
  .detail-grid{
    grid-template-columns:1fr;
    gap:40px;
  }
  .detail-grid.reverse .detail-media{
    order:0;
  }
  .detail-grid.reverse .detail-content{
    order:0;
  }
  .pricing-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .price-card:last-child{
    grid-column:1 / -1;
    max-width:420px;
    margin:0 auto;
  }
  .stats-grid{
    grid-template-columns:repeat(2,1fr);
    gap:16px;
  }
  .security-grid{
    grid-template-columns:1fr;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
}

@media (max-width:768px){
  .site-header{
    padding:12px 12px 0;
  }
  .header-inner{
    padding:10px 18px;
    border-radius:24px;
  }
  .logo-text{
    font-size:15px;
  }
  .main-nav{
    position:fixed;
    top:76px;
    left:16px;
    right:16px;
    background:rgba(255,255,255,.97);
    backdrop-filter:blur(18px);
    border-radius:20px;
    box-shadow:var(--shadow-lg);
    border:1px solid var(--border-light);
    flex-direction:column;
    align-items:stretch;
    padding:12px;
    gap:4px;
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:all .3s ease;
    z-index:999;
  }
  .main-nav.open{
    transform:translateY(0);
    opacity:1;
    pointer-events:auto;
  }
  .main-nav a{
    border-radius:12px;
    padding:13px 18px;
    text-align:center;
  }
  .nav-toggle{
    display:flex;
  }
  .header-actions .btn-primary{
    display:none;
  }
  .page-banner{
    padding:56px 0 48px;
  }
  .page-banner h1{
    font-size:28px;
  }
  .banner-desc{
    font-size:15px;
  }
  .section{
    padding:56px 0;
  }
  .section-head{
    flex-direction:column;
    align-items:flex-start;
    gap:16px;
    margin-bottom:32px;
  }
  .section-title{
    font-size:26px;
  }
  .quick-guide{
    gap:16px;
  }
  .cta-box{
    padding:44px 24px;
  }
  .cta-box h2{
    font-size:26px;
  }
  .detail-content h2{
    font-size:24px;
  }
  .faq-section{
    padding:28px 20px;
  }
}

@media (max-width:520px){
  .container{
    padding:0 14px;
  }
  .logo-icon{
    width:32px;
    height:32px;
    font-size:13px;
    border-radius:10px;
  }
  .logo-text{
    font-size:13px;
  }
  .header-inner{
    padding:10px 14px;
  }
  .quick-guide{
    grid-template-columns:1fr;
  }
  .pricing-grid{
    grid-template-columns:1fr;
  }
  .price-card:last-child{
    grid-column:auto;
    max-width:none;
  }
  .stats-grid{
    grid-template-columns:1fr 1fr;
  }
  .stat-number{
    font-size:28px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
    justify-content:center;
  }
  .banner-actions .btn{
    width:100%;
    justify-content:center;
  }
  .float-chat{
    bottom:18px;
    right:18px;
  }
  .chat-btn{
    width:48px;
    height:48px;
    font-size:18px;
  }
  .detail-grid{
    gap:24px;
  }
  .detail-media,.detail-media img{
    min-height:240px;
  }
  .section-link{
    width:100%;
    justify-content:center;
  }
}