/* roulang page: index */
:root {
  --primary: #2E6BE6;
  --primary-dark: #1F54BF;
  --secondary: #14B8A6;
  --accent: #F5A623;
  --accent-hover: #E09212;
  --bg: #F4F7FB;
  --card-bg: #FFFFFF;
  --dark: #173A5E;
  --dark-2: #1F4E7A;
  --title: #14293A;
  --body: #42586B;
  --muted: #7C93A6;
  --disabled: #B0C3D4;
  --border: #E4EBF2;
  --success: #18A058;
  --error: #D64545;
  --shadow-sm: 0 2px 10px rgba(20, 41, 58, 0.05);
  --shadow-lg: 0 12px 28px rgba(20, 41, 58, 0.10);
  --radius: 16px;
  --radius-sm: 10px;
  --container: 1200px;
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", 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);
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  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 {
  font-family: inherit;
  border: none;
  cursor: pointer;
}

input,
select,
textarea {
  font-family: inherit;
  font-size: 15px;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(2px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.25s ease, background 0.25s ease;
}

.site-header.scrolled {
  background: #ffffff;
  box-shadow: 0 4px 20px rgba(20, 41, 58, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--title);
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links>li {
  position: relative;
}

.nav-link {
  display: inline-block;
  padding: 8px 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--body);
  border-radius: var(--radius-sm);
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-links .active .nav-link {
  color: var(--primary);
}

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

.nav-item.has-mega {
  cursor: default;
}

.mega-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 640px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  display: none;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 50;
}

.nav-item.has-mega:hover .mega-panel,
.nav-item.has-mega:focus-within .mega-panel {
  display: block;
  opacity: 1;
  transform: translateX(-50%) translateY(12px);
}

.mega-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.mega-inner h4 {
  font-size: 14px;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.mega-list {
  list-style: none;
}

.mega-list li {
  margin-bottom: 10px;
}

.mega-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--body);
  font-weight: 500;
}

.mega-list a i {
  color: var(--secondary);
  font-size: 12px;
}

.mega-list a:hover {
  color: var(--primary);
}

.mega-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mega-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.mega-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.mega-card img {
  width: 64px;
  height: 44px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
}

.mega-card div {
  min-width: 0;
}

.mega-card strong {
  display: block;
  font-size: 14px;
  color: var(--title);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mega-card span {
  font-size: 12px;
  color: var(--muted);
}

.mega-cta {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mega-cta a {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.mega-cta a:hover {
  text-decoration: underline;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  line-height: 1;
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 8px 20px rgba(245, 166, 35, 0.25);
  color: #fff;
}

.btn-outline {
  background: #fff;
  border: 1px solid #D6E0EA;
  color: var(--primary);
}

.btn-outline:hover {
  background: #F0F5FC;
  border-color: var(--primary);
  color: var(--primary);
}

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

.btn-white:hover {
  background: #F0F5FC;
  color: var(--primary);
}

.btn-sm {
  height: 36px;
  padding: 0 18px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  background: none;
  font-size: 22px;
  color: var(--title);
  padding: 6px 10px;
  border-radius: 8px;
}

/* 移动端抽屉菜单 */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  z-index: 99;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 16px 24px 24px;
}

.mobile-drawer.open {
  display: block;
}

.mobile-drawer ul {
  list-style: none;
}

.mobile-drawer .nav-link {
  display: block;
  padding: 12px 8px;
  font-size: 16px;
  border-bottom: 1px solid var(--border);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  min-height: 600px;
  display: flex;
  align-items: center;
  padding-top: 64px;
  background: linear-gradient(to bottom right, rgba(23, 58, 94, 0.88) 0%, rgba(23, 58, 94, 0.55) 40%, rgba(23, 58, 94, 0.15) 72%, rgba(23, 58, 94, 0) 100%), url('/assets/images/backpic/back-1.webp') center 40%/cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.hero-content {
  max-width: 680px;
  padding: 72px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.32);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 14px;
  color: #EAF1FF;
  margin-bottom: 24px;
}

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

.hero h1 {
  font-size: 44px;
  line-height: 1.3;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.01em;
  margin-bottom: 20px;
}

.hero h1 span {
  color: #FFD98A;
}

.hero-subtitle {
  font-size: 19px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 36px;
  max-width: 560px;
}

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

.hero-sponsors {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-sponsors span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.04em;
}

.hero-sponsors .sponsor-avatars {
  display: flex;
  align-items: center;
}

.hero-sponsors .sponsor-avatars i {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.8);
  font-size: 16px;
  margin-left: -8px;
  border: 2px solid rgba(255, 255, 255, 0.35);
}

.hero-sponsors .sponsor-avatars i:first-child {
  margin-left: 0;
}

/* ===== 平台数据条 ===== */
.data-strip {
  background: #fff;
  margin-top: -32px;
  position: relative;
  z-index: 5;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.data-strip-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.data-item {
  padding: 32px 24px;
  text-align: center;
  position: relative;
}

.data-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 24%;
  bottom: 24%;
  width: 1px;
  background: var(--border);
}

.data-number {
  font-size: 40px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.data-number span {
  font-size: 18px;
  font-weight: 600;
  color: var(--muted);
  margin-left: 2px;
}

.data-label {
  font-size: 14px;
  color: var(--muted);
  margin-top: 8px;
}

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

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
  gap: 32px;
}

.section-title {
  font-size: 32px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--title);
  position: relative;
  padding-bottom: 14px;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: 4px;
  background: var(--primary);
}

.section-sub {
  font-size: 16px;
  color: var(--muted);
  max-width: 560px;
}

/* ===== 时间线 ===== */
.timeline-wrap {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 0;
}

.timeline-wrap::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--secondary) 8%, var(--secondary) 92%, transparent);
  transform: translateX(-50%);
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 36px;
  position: relative;
}

.timeline-item:nth-child(odd) {
  flex-direction: row-reverse;
}

.timeline-item .timeline-time {
  width: calc(50% - 40px);
  text-align: right;
  padding-right: 24px;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.4;
  padding-top: 4px;
}

.timeline-item:nth-child(odd) .timeline-time {
  text-align: left;
  padding-right: 0;
  padding-left: 24px;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 10px;
  transform: translateX(-50%);
  width: 22px;
  height: 22px;
  background: var(--secondary);
  border: 5px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--secondary);
  z-index: 2;
}

.timeline-dot i {
  display: none;
}

.timeline-card-wrap {
  width: calc(50% - 40px);
}

.timeline-item:nth-child(odd) .timeline-card-wrap {
  margin-left: auto;
}

.timeline-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 24px 28px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.timeline-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.timeline-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--title);
  margin-bottom: 8px;
}

.timeline-card p {
  font-size: 15px;
  color: var(--body);
  margin-bottom: 12px;
}

.timeline-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--secondary);
  border: 1px solid rgba(20, 184, 166, 0.4);
  background: rgba(20, 184, 166, 0.08);
  padding: 3px 12px;
  border-radius: 100px;
}

/* ===== 平台亮点 ===== */
.highlights-section {
  background: #fff;
  padding: 96px 0;
}

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

.highlight-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.highlight-card.large {
  grid-column: span 2;
  display: flex;
}

.highlight-card.large .highlight-img {
  width: 50%;
  min-height: 300px;
}

.highlight-card.large .highlight-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.highlight-img {
  background-size: cover;
  background-position: center;
  min-height: 180px;
}

.highlight-body {
  padding: 24px;
}

.highlight-card .tag {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  background: rgba(46, 107, 230, 0.08);
  padding: 4px 14px;
  border-radius: 100px;
  font-weight: 500;
  margin-bottom: 14px;
}

.highlight-card h3 {
  font-size: 20px;
  color: var(--title);
  margin-bottom: 12px;
  line-height: 1.4;
}

.highlight-card p {
  font-size: 15px;
  color: var(--body);
  line-height: 1.7;
}

.highlight-card .highlight-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--secondary);
}

.highlight-card .highlight-link:hover {
  text-decoration: underline;
}

/* ===== 票种 ===== */
.tickets-section {
  background: var(--bg);
}

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

.ticket-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

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

.ticket-card.recommended {
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}

.ticket-card.recommended:hover {
  transform: translateY(-12px);
  box-shadow: 0 18px 36px rgba(46, 107, 230, 0.14);
}

.ticket-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 18px;
  border-radius: 100px;
  letter-spacing: 0.03em;
}

.ticket-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--title);
  text-align: center;
  margin-bottom: 20px;
}

.ticket-price {
  text-align: center;
  margin-bottom: 28px;
}

.ticket-price .currency {
  font-size: 22px;
  font-weight: 600;
  color: var(--accent);
  vertical-align: top;
}

.ticket-price .amount {
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.ticket-price .unit {
  font-size: 14px;
  color: var(--muted);
}

.ticket-features {
  list-style: none;
  margin-bottom: 32px;
  flex: 1;
}

.ticket-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 15px;
  color: var(--body);
  line-height: 1.6;
}

.ticket-features li i {
  color: var(--secondary);
  font-size: 14px;
  margin-top: 5px;
}

.ticket-card .btn {
  width: 100%;
}

/* ===== 最新资讯 ===== */
.news-section {
  background: #fff;
}

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

.news-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

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

.news-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-card.featured {
  grid-column: span 2;
  flex-direction: row;
}

.news-card.featured img {
  width: 50%;
  height: auto;
  min-height: 260px;
}

.news-card.vertical img {
  height: 220px;
}

.news-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-card.featured .news-body {
  padding: 32px;
}

.tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  color: var(--secondary);
  border: 1px solid rgba(20, 184, 166, 0.4);
  background: rgba(20, 184, 166, 0.07);
  padding: 2px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.news-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--title);
  line-height: 1.5;
  margin-bottom: 12px;
}

.news-card.featured h3 {
  font-size: 24px;
}

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

.news-card p {
  font-size: 15px;
  color: var(--body);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.news-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  color: var(--muted);
}

.text-link {
  color: var(--secondary);
  font-weight: 600;
}

.text-link:hover {
  text-decoration: underline;
}

.news-empty {
  grid-column: 1 / -1;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 64px 24px;
  text-align: center;
  color: var(--muted);
}

.news-empty i {
  font-size: 42px;
  color: var(--disabled);
  margin-bottom: 16px;
}

/* ===== CTA 横幅 ===== */
.cta-banner {
  background: var(--dark);
  position: relative;
  padding: 80px 0;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.12;
}

.cta-banner .container {
  position: relative;
  z-index: 2;
}

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

.cta-head h2 {
  font-size: 34px;
  color: #fff;
  margin-bottom: 12px;
  font-weight: 700;
}

.cta-head p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin: 0 auto;
}

.cta-form-wrap {
  max-width: 920px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 40px;
}

.cta-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 24px;
}

.form-group {
  position: relative;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  background: #fff;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--title);
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(46, 107, 230, 0.15);
}

.form-group.full {
  grid-column: 1 / -1;
}

.form-submit {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-top: 8px;
}

.form-submit .btn {
  min-width: 220px;
}

.privacy-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

.privacy-note a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: underline;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: var(--muted);
  padding: 64px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand .logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  font-size: 15px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #A9BCCD;
  max-width: 280px;
  margin-bottom: 20px;
}

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

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: #B8C9D9;
  font-size: 15px;
  transition: all 0.2s ease;
}

.social-links a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.footer-col h4 {
  font-size: 15px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 18px;
}

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

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul a {
  color: #A9BCCD;
  font-size: 14px;
  transition: color 0.2s ease;
}

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

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: #A9BCCD;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.65);
}

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

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-cta .btn {
    display: none;
  }

  .mega-panel {
    display: none !important;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-subtitle {
    font-size: 17px;
  }

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

  .data-item:nth-child(2)::after {
    display: none;
  }

  .data-item {
    padding: 24px 16px;
  }

  .timeline-wrap::before {
    left: 16px;
  }

  .timeline-item {
    flex-direction: row-reverse !important;
  }

  .timeline-item .timeline-time {
    display: none;
  }

  .timeline-dot {
    left: 16px;
  }

  .timeline-card-wrap {
    width: calc(100% - 56px) !important;
    margin-left: 56px !important;
  }

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

  .highlight-card.large {
    grid-column: span 2;
  }

  .tickets-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .ticket-card.recommended {
    transform: none;
  }

  .ticket-card.recommended:hover {
    transform: translateY(-4px);
  }

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

  .news-card.featured {
    grid-column: span 2;
  }

  .news-card.featured img {
    width: 42%;
  }

  .cta-form {
    grid-template-columns: 1fr;
  }

  .form-group.full {
    grid-column: 1;
  }

  .form-submit {
    grid-column: 1;
  }

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

@media (max-width: 767px) {
  .section {
    padding: 56px 0;
  }

  .hero {
    padding-top: 56px;
    min-height: 560px;
  }

  .hero-content {
    padding: 48px 0;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-subtitle {
    font-size: 16px;
    line-height: 1.7;
  }

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

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

  .hero-sponsors {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-top: 36px;
  }

  .data-strip {
    margin-top: -24px;
  }

  .data-strip-inner {
    grid-template-columns: 1fr 1fr;
  }

  .data-number {
    font-size: 28px;
  }

  .section-head {
    flex-direction: column;
    gap: 16px;
  }

  .section-title {
    font-size: 26px;
    padding-bottom: 12px;
  }

  .section-sub {
    font-size: 15px;
  }

  .timeline-card-wrap {
    width: calc(100% - 48px) !important;
    margin-left: 48px !important;
  }

  .timeline-card {
    padding: 18px 20px;
  }

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

  .highlight-card.large {
    grid-column: span 1;
    flex-direction: column;
  }

  .highlight-card.large .highlight-img {
    width: 100%;
    min-height: 200px;
  }

  .tickets-grid {
    max-width: 100%;
  }

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

  .news-card.featured {
    grid-column: span 1;
    flex-direction: column;
  }

  .news-card.featured img {
    width: 100%;
    height: 180px;
    min-height: 0;
  }

  .news-card.featured .news-body {
    padding: 20px;
  }

  .cta-banner {
    padding: 56px 0;
  }

  .cta-head h2 {
    font-size: 26px;
  }

  .cta-head p {
    font-size: 15px;
  }

  .cta-form-wrap {
    padding: 24px 20px;
  }

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

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

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

  .logo {
    font-size: 16px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 15px;
  }

  .nav {
    height: 56px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 28px;
  }

  .data-strip-inner {
    grid-template-columns: 1fr;
    border-radius: var(--radius);
    overflow: hidden;
  }

  .data-item:not(:last-child)::after {
    display: none;
  }

  .data-item {
    padding: 20px;
    border-bottom: 1px solid var(--border);
  }

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

  .ticket-card.recommended {
    transform: none;
  }

  .ticket-card.recommended:hover {
    transform: translateY(-4px);
  }

  .news-card h3 {
    font-size: 18px;
  }
}

/* roulang page: category1 */
:root {
            --primary: #2E6BE6;
            --secondary: #14B8A6;
            --accent: #F5A623;
            --bg: #F4F7FB;
            --card-bg: #FFFFFF;
            --dark: #173A5E;
            --title-color: #14293A;
            --body-color: #42586B;
            --muted: #7C93A6;
            --border: #E4EBF2;
            --success: #18A058;
            --error: #D64545;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(20, 41, 58, 0.05);
            --shadow-hover: 0 12px 28px rgba(20, 41, 58, 0.10);
            --transition: 0.2s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--body-color);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            border: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #1c54c4;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--title-color);
            white-space: nowrap;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, #4a8af0 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(255, 255, 255, 0.92);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition), background var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(20, 41, 58, 0.08);
            background: #fff;
        }
        .site-header .nav {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }
        .nav-links>li {
            position: relative;
        }
        .nav-link {
            display: inline-block;
            padding: 10px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--title-color);
            border-radius: var(--radius-md);
            position: relative;
            transition: color var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
            background: #f0f5fc;
        }
        .nav-links>li.active>.nav-link {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links>li.active>.nav-link::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-md);
            background: #f0f5fc;
            color: var(--primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: #e2ecfa;
        }
        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            left: 50%;
            transform: translateX(-50%);
            width: 680px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 50px rgba(20, 41, 58, 0.14);
            padding: 24px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
            z-index: 200;
        }
        .has-mega:hover .mega-panel,
        .has-mega:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }
        .mega-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .mega-inner h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--muted);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .mega-list li {
            margin-bottom: 6px;
        }
        .mega-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            color: var(--title-color);
            font-size: 15px;
            transition: background var(--transition), color var(--transition);
        }
        .mega-list a:hover {
            background: #f0f5fc;
            color: var(--primary);
        }
        .mega-list i {
            color: var(--secondary);
            font-size: 14px;
            width: 18px;
            text-align: center;
        }
        .mega-cards {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .mega-card {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px;
            border-radius: var(--radius-md);
            background: var(--bg);
            border: 1px solid transparent;
            transition: border-color var(--transition), background var(--transition);
        }
        .mega-card:hover {
            border-color: var(--primary);
            background: #f0f5fc;
        }
        .mega-card img {
            width: 72px;
            height: 48px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .mega-card strong {
            display: block;
            font-size: 14px;
            color: var(--title-color);
            line-height: 1.4;
            margin-bottom: 2px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .mega-card span {
            font-size: 12px;
            color: var(--muted);
        }
        .mega-cta {
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 14px;
            color: var(--muted);
        }
        .mega-cta a {
            font-weight: 500;
            color: var(--primary);
        }
        .mega-cta a i {
            margin-left: 4px;
        }
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(23, 58, 94, 0.92) 0%, rgba(46, 107, 230, 0.72) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 160px 0 88px;
            color: #fff;
        }
        .hero-inner {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .breadcrumb {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb i {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }
        .hero-content {
            max-width: 720px;
            display: flex;
            flex-direction: column;
            gap: 20px;
            align-items: flex-start;
        }
        .hero-content h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            margin: 0;
        }
        .hero-content h1 span {
            color: #ffd28a;
        }
        .hero-desc {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.88);
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
            text-decoration: none;
            border: 1px solid transparent;
        }
        .btn i {
            font-size: 14px;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: #e09212;
            color: #fff;
            box-shadow: 0 8px 20px rgba(245, 166, 35, 0.25);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: #fff;
            border-color: #d6e0ea;
            color: var(--primary);
        }
        .btn-outline:hover {
            background: #f0f5fc;
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: #fff;
            color: #fff;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 17px;
        }
        .section {
            padding: 88px 0;
        }
        .section-head {
            max-width: 680px;
            margin-bottom: 48px;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--title-color);
            line-height: 1.35;
            margin-bottom: 12px;
            position: relative;
            padding-bottom: 14px;
        }
        .section-head h2::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .section-head.center h2::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .section-head p {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
        }
        .features-section {
            background: var(--bg);
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }
        .feature-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .feature-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .feature-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 500;
            color: var(--secondary);
            background: rgba(20, 184, 166, 0.08);
            border: 1px solid rgba(20, 184, 166, 0.25);
            padding: 4px 12px;
            border-radius: 100px;
            width: fit-content;
        }
        .feature-body h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--title-color);
            line-height: 1.4;
        }
        .feature-body p {
            font-size: 15px;
            color: var(--body-color);
            line-height: 1.75;
            flex: 1;
        }
        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            color: var(--secondary);
            font-size: 15px;
            margin-top: 8px;
        }
        .feature-link:hover {
            text-decoration: underline;
        }
        .feature-large {
            grid-column: span 2;
            grid-row: span 2;
            flex-direction: row;
        }
        .feature-large .feature-img {
            width: 50%;
            height: auto;
            min-height: 300px;
        }
        .feature-large .feature-body {
            padding: 32px;
        }
        .feature-large .feature-body h3 {
            font-size: 26px;
        }
        .feature-card:nth-child(2) {
            grid-column: 3;
            grid-row: 1;
        }
        .feature-card:nth-child(3) {
            grid-column: 3;
            grid-row: 2;
        }
        .intro-band {
            background: linear-gradient(135deg, rgba(23, 58, 94, 0.88) 0%, rgba(23, 58, 94, 0.72) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 88px 0;
            color: #fff;
        }
        .intro-band .container {
            max-width: 920px;
            text-align: center;
        }
        .intro-band h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.35;
        }
        .intro-band p {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.85);
            max-width: 780px;
            margin: 0 auto;
        }
        .process-section {
            background: #fff;
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-step {
            position: relative;
            text-align: center;
            padding: 32px 20px;
            background: var(--bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin: 0 auto 16px;
        }
        .step-num {
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--title-color);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }
        .links-section {
            background: var(--bg);
        }
        .link-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .link-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .link-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }
        .link-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(46, 107, 230, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .link-content {
            flex: 1;
        }
        .link-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--title-color);
            margin-bottom: 4px;
        }
        .link-content p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
            max-width: 640px;
        }
        .link-arrow {
            color: var(--secondary);
            font-size: 18px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .link-item:hover .link-arrow {
            transform: translateX(6px);
        }
        .faq-section {
            background: #fff;
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-item.open {
            border-color: var(--primary);
            box-shadow: 0 8px 24px rgba(46, 107, 230, 0.08);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 500;
            color: var(--title-color);
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: #eef3fa;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(20, 184, 166, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform 0.25s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--secondary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--body-color);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin: 0 24px 20px;
            padding-left: 0;
            padding-right: 0;
            border-top-color: rgba(46, 107, 230, 0.15);
        }
        .cta-band {
            background: var(--dark);
            padding: 88px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.15;
        }
        .cta-band .container {
            position: relative;
            z-index: 1;
        }
        .cta-band h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-band p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .site-footer {
            background: var(--dark);
            color: #A9BCCD;
            padding: 64px 0 0;
            font-size: 14px;
        }
        .site-footer a {
            color: #A9BCCD;
            transition: color var(--transition);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .site-footer .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .logo-icon {
            background: linear-gradient(135deg, var(--accent) 0%, #f7b854 100%);
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 12px;
            color: #A9BCCD;
            max-width: 280px;
        }
        .social-links {
            display: flex;
            gap: 10px;
            margin-top: 20px;
        }
        .social-links a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #A9BCCD;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .social-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            line-height: 1.6;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            margin-bottom: 12px;
        }
        .footer-contact i {
            color: var(--secondary);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0 28px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 1023px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-large {
                grid-column: span 2;
                grid-row: auto;
                flex-direction: column;
            }
            .feature-large .feature-img {
                width: 100%;
                height: 220px;
                min-height: 0;
            }
            .feature-card:nth-child(2) {
                grid-column: 1;
                grid-row: auto;
            }
            .feature-card:nth-child(3) {
                grid-column: 2;
                grid-row: auto;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .mega-panel {
                width: 560px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                padding: 16px 24px 24px;
                box-shadow: 0 20px 40px rgba(20, 41, 58, 0.12);
                border-bottom: 1px solid var(--border);
                align-items: stretch;
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links>li {
                width: 100%;
            }
            .nav-links>li.active>.nav-link::after {
                display: none;
            }
            .nav-link {
                display: block;
                padding: 14px 12px;
                border-radius: var(--radius-md);
                font-size: 16px;
            }
            .nav-links>li.active>.nav-link {
                background: #f0f5fc;
            }
            .mega-panel {
                display: none;
            }
            .page-hero {
                padding: 130px 0 64px;
            }
            .hero-content h1 {
                font-size: 34px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-large {
                grid-column: auto;
            }
            .feature-large .feature-img {
                width: 100%;
                height: 180px;
            }
            .feature-card:nth-child(2),
            .feature-card:nth-child(3) {
                grid-column: auto;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .link-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 20px;
            }
            .link-arrow {
                align-self: flex-end;
                margin-top: -20px;
            }
            .cta-band {
                padding: 56px 0;
            }
            .cta-band h2 {
                font-size: 26px;
            }
            .cta-band p {
                font-size: 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .intro-band {
                padding: 56px 0;
            }
            .intro-band h2 {
                font-size: 24px;
            }
        }

/* roulang page: article */
:root {
  --primary: #2E6BE6;
  --secondary: #14B8A6;
  --accent: #F5A623;
  --bg: #F4F7FB;
  --card-bg: #FFFFFF;
  --dark: #173A5E;
  --heading: #14293A;
  --text: #42586B;
  --muted: #7C93A6;
  --disabled: #B0C3D4;
  --border: #E4EBF2;
  --success: #18A058;
  --error: #D64545;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 2px 10px rgba(20, 41, 58, 0.05);
  --shadow-hover: 0 12px 28px rgba(20, 41, 58, 0.10);
  --transition: 0.2s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; font-size: 16px; padding-top: 64px; }
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* Header & Nav */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: 64px; background: rgba(255, 255, 255, 0.92); border-bottom: 1px solid var(--border); transition: box-shadow 0.3s ease; }
.site-header.scrolled { box-shadow: 0 4px 16px rgba(20, 41, 58, 0.08); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--heading); }
.logo-icon { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links > li { position: relative; }
.nav-link { display: block; line-height: 64px; font-size: 16px; color: var(--text); font-weight: 500; position: relative; }
.nav-link::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px; background: var(--primary); border-radius: 2px; transform: scaleX(0); transform-origin: center; transition: transform 0.25s ease; }
.nav-links > li.active > .nav-link,
.nav-link:hover { color: var(--primary); }
.nav-links > li.active > .nav-link::after,
.nav-link:hover::after { transform: scaleX(1); }
.has-mega .mega-panel { position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(10px); width: 680px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-hover); padding: 20px; opacity: 0; visibility: hidden; transition: all 0.25s ease; z-index: 200; }
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.mega-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 18px; }
.mega-inner h4 { font-size: 14px; color: var(--muted); margin-bottom: 12px; font-weight: 600; }
.mega-list li { margin-bottom: 10px; }
.mega-list a { display: inline-flex; align-items: center; gap: 8px; color: var(--text); font-size: 15px; }
.mega-list a:hover { color: var(--primary); }
.mega-list i { color: var(--secondary); font-size: 13px; }
.mega-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mega-card { display: flex; gap: 10px; padding: 10px; border: 1px solid var(--border); border-radius: 12px; transition: all var(--transition); }
.mega-card img { width: 64px; height: 48px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.mega-card strong { font-size: 14px; color: var(--heading); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; }
.mega-card span { font-size: 12px; color: var(--muted); }
.mega-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.mega-cta { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.mega-cta span { font-size: 13px; color: var(--muted); }
.mega-cta a { font-size: 14px; font-weight: 600; color: var(--primary); }
.menu-toggle { display: none; width: 40px; height: 40px; border: 1px solid var(--border); background: #fff; border-radius: 10px; color: var(--heading); font-size: 18px; cursor: pointer; align-items: center; justify-content: center; }

/* Breadcrumb */
.breadcrumb.container { max-width: 900px; padding-top: 84px; padding-bottom: 0; font-size: 14px; color: var(--muted); display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--disabled); }

/* Article Head */
.article-head.container { max-width: 900px; margin-top: 40px; margin-bottom: 28px; }
.article-head h1 { font-size: 36px; color: var(--heading); line-height: 1.3; font-weight: 700; margin-bottom: 16px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; color: var(--muted); }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }

/* Article Body */
.article-body.container { max-width: 900px; }
.article-cover { border-radius: var(--radius); overflow: hidden; margin-bottom: 28px; box-shadow: var(--shadow); }
.article-cover img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.article-content { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); padding: 40px 48px; box-shadow: var(--shadow); font-size: 16px; line-height: 1.9; color: var(--text); }
.article-content h2 { font-size: 26px; color: var(--heading); margin: 40px 0 16px; padding-bottom: 12px; border-bottom: 3px solid var(--primary); font-weight: 700; }
.article-content h3 { font-size: 22px; color: var(--heading); margin: 30px 0 12px; font-weight: 600; }
.article-content h4 { font-size: 18px; color: var(--heading); margin: 24px 0 10px; font-weight: 600; }
.article-content p { margin: 0 0 1.5em; }
.article-content ul, .article-content ol { margin: 0 0 1.5em 1.4em; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 0.5em; }
.article-content blockquote { border-left: 4px solid var(--primary); background: #F0F5FC; border-radius: 8px; padding: 16px 20px; margin: 1.5em 0; color: var(--text); }
.article-content img { border-radius: 12px; margin: 1.5em 0; }
.article-content figure { margin: 1.5em 0; }
.article-content figcaption { font-size: 13px; color: var(--muted); text-align: center; margin-top: 8px; }
.article-content pre { background: var(--bg); padding: 18px 20px; border-radius: 10px; overflow-x: auto; font-family: "SFMono-Regular", Consolas, monospace; font-size: 14px; line-height: 1.6; margin: 1.5em 0; }
.article-content code { font-family: "SFMono-Regular", Consolas, monospace; background: var(--bg); padding: 2px 6px; border-radius: 6px; font-size: 0.9em; }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 15px; }
.article-content th, .article-content td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
.article-content th { background: var(--bg); color: var(--heading); font-weight: 600; }
.article-content a { color: var(--primary); text-decoration: underline; }

/* Not Found */
.not-found { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); padding: 64px 32px; text-align: center; box-shadow: var(--shadow); }
.not-found i { font-size: 48px; color: var(--disabled); margin-bottom: 16px; }
.not-found h1 { font-size: 28px; color: var(--heading); margin-bottom: 10px; }
.not-found p { color: var(--muted); margin-bottom: 24px; }

/* Article Footer Nav */
.article-footer-nav.container { max-width: 900px; margin-top: 32px; display: flex; flex-direction: column; gap: 20px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; }
.tag { display: inline-block; padding: 5px 14px; border: 1px solid var(--secondary); color: var(--secondary); border-radius: 100px; background: rgba(20, 184, 166, 0.06); font-size: 13px; font-weight: 500; }
.post-nav { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: center; }
.post-nav-link { display: flex; flex-direction: column; gap: 4px; background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px; transition: all var(--transition); text-align: left; }
.post-nav-link .label { font-size: 12px; color: var(--muted); }
.post-nav-link span:last-child { font-weight: 600; color: var(--heading); font-size: 15px; }
.post-nav-link:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.post-nav-link.next { text-align: right; }
.btn-outline { display: inline-flex; align-items: center; justify-content: center; height: 44px; padding: 0 24px; border: 1px solid #D6E0EA; background: #fff; color: var(--primary); border-radius: 10px; font-weight: 600; transition: all var(--transition); white-space: nowrap; }
.btn-outline:hover { background: #F0F5FC; border-color: var(--primary); }

/* Related */
.related-news.container { max-width: 1200px; margin-top: 72px; }
.related-news h2 { font-size: 28px; color: var(--heading); margin-bottom: 24px; display: flex; align-items: center; gap: 12px; }
.related-news h2::before { content: ""; width: 6px; height: 24px; background: var(--accent); border-radius: 3px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: all 0.25s ease; }
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.news-thumb { aspect-ratio: 16 / 10; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.news-card:hover .news-thumb img { transform: scale(1.04); }
.news-info { padding: 18px; }
.news-info .badge { display: inline-block; font-size: 12px; color: var(--secondary); border: 1px solid rgba(20, 184, 166, 0.4); background: rgba(20, 184, 166, 0.08); border-radius: 100px; padding: 3px 10px; margin-bottom: 10px; }
.news-info h3 { font-size: 16px; color: var(--heading); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-date { font-size: 13px; color: var(--muted); margin-top: 10px; }

/* Footer */
.site-footer { background: var(--dark); color: #A9BCCD; padding: 56px 0 20px; margin-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 36px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.6; margin-bottom: 18px; }
.social-links { display: flex; gap: 12px; }
.social-links a { width: 36px; height: 36px; border-radius: 10px; background: rgba(255, 255, 255, 0.08); display: flex; align-items: center; justify-content: center; color: #A9BCCD; font-size: 15px; transition: all var(--transition); }
.social-links a:hover { background: var(--accent); color: #fff; }
.footer-col h4 { font-size: 15px; color: #fff; margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: #A9BCCD; font-size: 14px; }
.footer-col ul a:hover { color: #fff; }
.footer-contact li { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; color: #7C93A6; }
.footer-bottom a { color: #7C93A6; }

/* Responsive */
@media (max-width: 1023px) {
  .mega-panel { display: none; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-content { padding: 32px 28px; }
}
@media (max-width: 767px) {
  .menu-toggle { display: flex; }
  .nav-links { position: fixed; top: 64px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: flex-start; gap: 4px; padding: 16px 24px; border-bottom: 1px solid var(--border); display: none; box-shadow: var(--shadow-hover); }
  .nav-links.show { display: flex; }
  .nav-link { line-height: 44px; width: 100%; }
  .has-mega .mega-panel { display: none; }
  .article-head h1 { font-size: 28px; }
  .article-content { padding: 24px 20px; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav-link.next { text-align: left; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .breadcrumb.container { padding-left: 16px; padding-right: 16px; }
  .article-head h1 { font-size: 24px; }
  .article-meta { gap: 10px; font-size: 13px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}