/* roulang page: index */
/* ==========================================================
   mk体育官网登录 · 暗色霓虹视觉系统
   基于 Foundation CDN 深度定制
   ========================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --bg-primary: #070b14;
  --bg-secondary: #0d1424;
  --bg-card: #121a2e;
  --bg-elevated: #182138;
  --neon-cyan: #00e5ff;
  --neon-pink: #ff2d78;
  --neon-purple: #8b5cf6;
  --neon-amber: #fbbf24;
  --text-primary: #eef2f8;
  --text-secondary: #94a3b8;
  --text-muted: #5b6b82;
  --border-color: rgba(148, 163, 184, 0.14);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.35);
  --shadow-glow-cyan: 0 0 24px rgba(0, 229, 255, 0.18);
  --shadow-glow-pink: 0 0 24px rgba(255, 45, 120, 0.18);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --header-height: 72px;
  --section-space: 96px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; border: none; outline: none; }
button { cursor: pointer; background: none; }

/* ---------- 通用容器 ---------- */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}

.section { padding: var(--section-space) 0; position: relative; }
.section-alt { background: var(--bg-secondary); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.section-title-wrap { position: relative; }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.2);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 14px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 560px;
  margin-top: 10px;
}

.section-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--neon-cyan);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid rgba(0, 229, 255, 0.3);
  padding: 9px 20px;
  border-radius: 100px;
  transition: var(--transition);
}

.section-link:hover {
  background: rgba(0, 229, 255, 0.1);
  border-color: var(--neon-cyan);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateX(4px);
}

/* ---------- Header / 导航 ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(7, 11, 20, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: var(--transition);
}

.header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-purple), transparent);
  opacity: 0.7;
}

.header.scrolled {
  background: rgba(7, 11, 20, 0.98);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.nav-inner {
  max-width: 1240px;
  height: 100%;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  color: #fff;
  box-shadow: 0 4px 16px rgba(0, 229, 255, 0.3);
}

.brand-text {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.3px;
  background: linear-gradient(120deg, #fff, var(--neon-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

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

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-1px);
}

.nav-link.active {
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
  box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.25), var(--shadow-glow-cyan);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 3px;
  border-radius: 4px;
  background: var(--neon-cyan);
  box-shadow: var(--shadow-glow-cyan);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: 100px;
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
  transition: var(--transition);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 229, 255, 0.45);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  width: 42px;
  height: 42px;
  justify-content: center;
  align-items: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- Hero 首屏 ---------- */
.hero {
  position: relative;
  padding: calc(var(--header-height) + 80px) 0 90px;
  background-image: linear-gradient(135deg, rgba(7, 11, 20, 0.88) 0%, rgba(7, 11, 20, 0.75) 45%, rgba(13, 20, 36, 0.9) 100%), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -150px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.12), transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.12), transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 780px;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 100px;
  padding: 7px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--neon-cyan);
  margin-bottom: 26px;
  box-shadow: var(--shadow-glow-cyan);
  animation: fadeInDown 0.6s ease forwards;
}

.hero-badge i { font-size: 14px; }

.hero-title {
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
  animation: fadeInUp 0.7s ease 0.1s forwards;
}

.hero-title .text-gradient {
  background: linear-gradient(120deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 580px;
  margin-bottom: 34px;
  line-height: 1.8;
  animation: fadeInUp 0.7s ease 0.2s forwards;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 42px;
  animation: fadeInUp 0.7s ease 0.3s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 100px;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn i { font-size: 14px; }

.btn-primary {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: #fff;
  box-shadow: 0 6px 24px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 229, 255, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.btn-outline:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.05);
  transform: translateY(-2px);
}

.hero-search {
  max-width: 620px;
  display: flex;
  gap: 0;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 60px;
  padding: 5px;
  backdrop-filter: blur(10px);
  animation: fadeInUp 0.7s ease 0.4s forwards;
  transition: var(--transition);
}

.hero-search:focus-within {
  border-color: var(--neon-cyan);
  box-shadow: var(--shadow-glow-cyan);
}

.hero-search input {
  flex: 1;
  background: transparent;
  padding: 10px 20px;
  color: var(--text-primary);
  font-size: 15px;
}

.hero-search input::placeholder { color: var(--text-muted); }

.hero-search button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 26px;
  border-radius: 50px;
  transition: var(--transition);
  white-space: nowrap;
}

.hero-search button:hover {
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.4);
  transform: scale(1.02);
}

/* ---------- 跑马灯 Ticker ---------- */
.ticker {
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
  padding: 10px 0;
  overflow: hidden;
  position: relative;
}

.ticker-track {
  display: flex;
  gap: 50px;
  white-space: nowrap;
  animation: tickerScroll 28s linear infinite;
  width: max-content;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

.ticker-item i { font-size: 12px; }

@keyframes tickerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  transition: 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(--neon-cyan), var(--neon-purple));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md), var(--shadow-glow-cyan);
  border-color: rgba(0, 229, 255, 0.25);
}

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

.feature-icon {
  width: 58px;
  height: 58px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(139, 92, 246, 0.15));
  border: 1px solid rgba(0, 229, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--neon-cyan);
  margin-bottom: 22px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  box-shadow: var(--shadow-glow-cyan);
  transform: scale(1.05);
}

.feature-title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- 最新资讯 (CMS) ---------- */
.news-section { position: relative; }

.news-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

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

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
}

.news-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
  opacity: 0.5;
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 229, 255, 0.2);
}

.news-card:hover::before { opacity: 1; box-shadow: var(--shadow-glow-cyan); }

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(139, 92, 246, 0.12);
  color: #b79cfd;
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.tag-cyan {
  background: rgba(0, 229, 255, 0.1);
  color: var(--neon-cyan);
  border-color: rgba(0, 229, 255, 0.25);
}

.tag-pink {
  background: rgba(255, 45, 120, 0.1);
  color: var(--neon-pink);
  border-color: rgba(255, 45, 120, 0.25);
}

.tag-amber {
  background: rgba(251, 191, 36, 0.12);
  color: var(--neon-amber);
  border-color: rgba(251, 191, 36, 0.25);
}

.news-date {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
}

.news-card h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-primary);
  transition: var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card:hover h3 { color: var(--neon-cyan); }

.news-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-link {
  margin-top: auto;
  font-size: 13px;
  font-weight: 600;
  color: var(--neon-cyan);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transform: translateX(-6px);
  transition: var(--transition);
}

.news-card:hover .news-link {
  opacity: 1;
  transform: translateX(0);
}

.empty-text {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 30px;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 15px;
}

/* ---------- 专题分类入口 ---------- */
.category-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.category-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  min-height: 300px;
  display: flex;
  align-items: flex-end;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.category-card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.6s ease;
}

.category-card:hover .category-card-bg {
  transform: scale(1.05);
}

.category-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 20%, rgba(7, 11, 20, 0.92) 85%);
}

.category-card-content {
  position: relative;
  padding: 28px;
  width: 100%;
  z-index: 2;
}

.category-card-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.15);
  border: 1px solid rgba(0, 229, 255, 0.3);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
}

.category-card h3 {
  font-size: 21px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}

.category-card p {
  font-size: 14px;
  color: rgba(238, 242, 248, 0.75);
  margin-bottom: 16px;
  line-height: 1.6;
}

.category-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--neon-cyan);
  transition: var(--transition);
}

.category-card:hover .category-card-link { gap: 14px; }

/* ---------- 数据统计 ---------- */
.stats-section {
  background: linear-gradient(135deg, rgba(13, 20, 36, 0.95), rgba(24, 33, 56, 0.98)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative;
}

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

.stat-item {
  padding: 40px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
  backdrop-filter: blur(6px);
}

.stat-item:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 255, 0.3);
  box-shadow: var(--shadow-glow-cyan);
}

.stat-icon {
  font-size: 28px;
  color: var(--neon-cyan);
  margin-bottom: 14px;
}

.stat-number {
  font-size: 40px;
  font-weight: 900;
  line-height: 1.2;
  background: linear-gradient(120deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ---------- 使用流程 ---------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}

.step-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px 26px;
  transition: var(--transition);
  overflow: hidden;
}

.step-card::after {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 14px;
  right: 18px;
  font-size: 48px;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 229, 255, 0.15);
  font-family: 'Arial Black', sans-serif;
}

.step-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 229, 255, 0.2);
}

.step-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(139, 92, 246, 0.12));
  border: 1px solid rgba(0, 229, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--neon-cyan);
  margin-bottom: 20px;
}

.step-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

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

.accordion {
  background: transparent;
}

.accordion-item {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.accordion-item:hover {
  border-color: rgba(0, 229, 255, 0.25) !important;
}

.accordion-title {
  background: transparent !important;
  color: var(--text-primary) !important;
  font-size: 16px;
  font-weight: 600;
  padding: 20px 24px !important;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
  position: relative;
}

.accordion-title::before {
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  content: '\f078';
  float: right;
  color: var(--neon-cyan);
  transition: transform 0.3s ease;
  font-size: 14px;
}

.accordion-item.is-active .accordion-title {
  color: var(--neon-cyan) !important;
  border-bottom-color: var(--border-color);
}

.accordion-item.is-active .accordion-title::before {
  transform: rotate(180deg);
}

.accordion-title:hover {
  color: var(--neon-cyan) !important;
  background: rgba(0, 229, 255, 0.03) !important;
}

.accordion-content {
  background: transparent !important;
  color: var(--text-secondary) !important;
  font-size: 14.5px;
  line-height: 1.8;
  padding: 16px 24px 24px !important;
  border-bottom: none !important;
}

.accordion-content p { margin-bottom: 8px; }
.accordion-content p:last-child { margin-bottom: 0; }

/* ---------- CTA ---------- */
.cta-section {
  position: relative;
  padding: 90px 0;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(139, 92, 246, 0.1)), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(7, 11, 20, 0.82);
}

.cta-box {
  position: relative;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  z-index: 2;
}

.cta-box h2 {
  font-size: 36px;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-box p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

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

/* ---------- 页脚 ---------- */
.footer {
  background: #050810;
  border-top: 1px solid var(--border-color);
  padding: 64px 0 0;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
  opacity: 0.4;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 280px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--neon-cyan);
  box-shadow: var(--shadow-glow-cyan);
}

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

.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.footer-links a i {
  font-size: 10px;
  color: var(--neon-cyan);
}

.footer-links a:hover {
  color: var(--neon-cyan);
  transform: translateX(4px);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.footer-contact i {
  color: var(--neon-cyan);
  margin-top: 3px;
  font-size: 13px;
}

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding: 22px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-secondary);
}

.footer-bottom a:hover {
  color: var(--neon-cyan);
}

/* ---------- 动画 ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  :root { --section-space: 72px; }

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

  .category-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

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

@media (max-width: 768px) {
  :root {
    --section-space: 56px;
  }

  .container { padding: 0 20px; }

  .section-title { font-size: 26px; }
  .section-subtitle { font-size: 14px; }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(7, 11, 20, 0.98);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px;
    gap: 4px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  }

  .nav-list.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    justify-content: flex-start;
  }

  .nav-link.active {
    background: rgba(0, 229, 255, 0.08);
  }

  .nav-link.active::after {
    left: 16px;
    right: auto;
    transform: none;
    top: 50%;
    bottom: auto;
    width: 3px;
    height: 16px;
    transform: translateY(-50%);
  }

  .nav-cta {
    display: none;
  }

  .hero {
    padding: calc(var(--header-height) + 50px) 0 60px;
    background-attachment: scroll;
  }

  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 15px; }

  .hero-search {
    flex-direction: column;
    border-radius: 20px;
    gap: 8px;
  }

  .hero-search button {
    justify-content: center;
    width: 100%;
  }

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

  .category-cards {
    grid-template-columns: 1fr;
  }

  .category-card {
    min-height: 240px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .steps-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

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

  .cta-box h2 { font-size: 28px; }
}

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

  .brand-text { font-size: 17px; }
  .brand-icon { width: 34px; height: 34px; font-size: 16px; }

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

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

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

  .stat-number { font-size: 32px; }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 30px;
  }

  .section-title { font-size: 22px; }

  .footer-contact li {
    font-size: 13px;
  }

  .footer-bottom {
    padding: 18px 16px;
  }
}

/* roulang page: category1 */
:root{
  --primary:#00e5ff;
  --primary-dark:#009ec3;
  --primary-glow:rgba(0,229,255,.35);
  --accent:#a855f7;
  --accent-dark:#7c3aed;
  --bg-deep:#060a12;
  --bg-dark:#0b101b;
  --bg-card:#121a2a;
  --bg-card-hover:#182238;
  --text-main:#e8edf5;
  --text-muted:#97a3b8;
  --text-dim:#6b7a90;
  --border:#1e2a3d;
  --border-light:#2a3a52;
  --radius-md:12px;
  --radius-lg:20px;
  --shadow-md:0 8px 24px rgba(0,0,0,.35);
  --shadow-lg:0 16px 40px rgba(0,0,0,.45);
  --transition:.25s ease;
  --space-section:96px;
  --header-hight:72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--text-main);
  background:var(--bg-deep);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:#fff}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grid-x{display:flex;flex-wrap:wrap}
.cell{flex:0 0 auto;min-height:0;min-width:0}

.header{
  position:sticky;top:0;z-index:100;
  background:rgba(6,10,18,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  box-shadow:0 4px 20px rgba(0,0,0,.5);
}
.nav-inner{
  max-width:1280px;margin:0 auto;padding:0 24px;
  height:var(--header-hight);
  display:flex;align-items:center;gap:32px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:20px;font-weight:800;letter-spacing:.5px;
  color:#fff;white-space:nowrap;
}
.brand:hover{color:var(--primary)}
.brand-icon{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:10px;font-size:17px;color:#060a12;
  box-shadow:0 0 18px var(--primary-glow);
}
.nav-list{display:flex;align-items:center;gap:8px;list-style:none;margin:0}
.nav-link{
  display:flex;align-items:center;gap:6px;
  padding:9px 18px;border-radius:8px;
  font-size:15px;font-weight:600;color:var(--text-muted);
  border:1px solid transparent;
  transition:all var(--transition);
}
.nav-link i{font-size:14px}
.nav-link:hover{
  color:#fff;background:rgba(255,255,255,.06);
  border-color:var(--border-light);
}
.nav-link.active{
  color:var(--primary);
  background:rgba(0,229,255,.08);
  border-color:rgba(0,229,255,.25);
  box-shadow:0 0 16px rgba(0,229,255,.18);
  text-shadow:0 0 12px rgba(0,229,255,.4);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:8px;
  font-size:14px;font-weight:700;color:#060a12;
  background:linear-gradient(135deg,var(--primary),#66f0ff);
  box-shadow:0 0 20px rgba(0,229,255,.35);
  transition:all var(--transition);
}
.nav-cta:hover{color:#060a12;transform:translateY(-2px);box-shadow:0 0 28px rgba(0,229,255,.55)}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:42px;height:42px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:all .3s}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.category-banner{
  position:relative;padding:120px 0 90px;
  background:linear-gradient(135deg,rgba(6,10,18,.88),rgba(10,14,26,.78)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:30px;
  background:rgba(0,229,255,.12);
  border:1px solid rgba(0,229,255,.3);
  color:var(--primary);font-size:13px;font-weight:700;
  margin-bottom:20px;
}
.banner-tag i{font-size:12px}
.category-banner h1{
  font-size:44px;font-weight:900;line-height:1.2;color:#fff;
  letter-spacing:1px;margin-bottom:16px;
}
.category-banner h1 span{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.banner-desc{
  max-width:640px;font-size:17px;color:var(--text-muted);
  margin-bottom:32px;line-height:1.8;
}
.banner-btns{display:flex;flex-wrap:wrap;gap:14px}
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 28px;border-radius:10px;
  font-size:15px;font-weight:700;color:#060a12;
  background:linear-gradient(135deg,var(--primary),#66f0ff);
  box-shadow:0 0 24px rgba(0,229,255,.35);
  transition:all var(--transition);
}
.btn-primary:hover{color:#060a12;transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,229,255,.5)}
.btn-outline{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 28px;border-radius:10px;
  font-size:15px;font-weight:700;color:#fff;
  border:1px solid var(--border-light);
  background:rgba(255,255,255,.04);
  transition:all var(--transition);
}
.btn-outline:hover{color:var(--primary);border-color:var(--primary);background:rgba(0,229,255,.06)}

.section{padding:var(--space-section) 0;position:relative}
.section-alt{background:var(--bg-dark)}
.section-head{text-align:center;max-width:720px;margin:0 auto 56px}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--primary);
  text-transform:uppercase;letter-spacing:2px;
  margin-bottom:12px;
}
.section-head h2{font-size:34px;font-weight:800;color:#fff;line-height:1.3;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--text-muted);line-height:1.7}

.card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:32px;
  transition:all var(--transition);
  height:100%;
  position:relative;
  overflow:hidden;
}
.card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  opacity:0;transition:opacity var(--transition);
}
.card:hover{background:var(--bg-card-hover);border-color:var(--border-light);transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card:hover::before{opacity:1}
.card-icon{
  width:56px;height:56px;display:flex;align-items:center;justify-content:center;
  background:rgba(0,229,255,.1);
  border:1px solid rgba(0,229,255,.2);
  border-radius:12px;font-size:22px;color:var(--primary);
  margin-bottom:20px;
  box-shadow:0 0 16px rgba(0,229,255,.1);
}
.card h3{font-size:19px;font-weight:700;color:#fff;margin-bottom:12px}
.card p{font-size:14px;color:var(--text-muted);line-height:1.75}

.step-num{
  position:absolute;top:20px;right:24px;
  font-size:42px;font-weight:900;line-height:1;
  color:rgba(255,255,255,.05);
  font-style:italic;
}

.flow-wrap{
  display:flex;gap:24px;flex-wrap:wrap;
}
.flow-item{
  flex:1;min-width:220px;position:relative;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:32px 24px;
  text-align:center;transition:all var(--transition);
}
.flow-item:hover{transform:translateY(-6px);border-color:var(--border-light);box-shadow:var(--shadow-md)}
.flow-dot{
  width:50px;height:50px;margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:50%;font-size:20px;font-weight:800;color:#060a12;
  box-shadow:0 0 20px var(--primary-glow);
}
.flow-item h3{font-size:17px;color:#fff;font-weight:700;margin-bottom:10px}
.flow-item p{font-size:13px;color:var(--text-muted);line-height:1.65}
.flow-arrow{
  position:absolute;right:-22px;top:50%;transform:translateY(-50%);
  color:var(--primary);font-size:18px;z-index:2;
}

.method-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:36px 30px;
  transition:all var(--transition);
  height:100%;
  position:relative;
}
.method-card:hover{transform:translateY(-6px);border-color:rgba(0,229,255,.3);box-shadow:var(--shadow-lg)}
.method-icon{
  width:64px;height:64px;display:flex;align-items:center;justify-content:center;
  border-radius:16px;font-size:26px;margin-bottom:22px;
  background:linear-gradient(135deg,rgba(0,229,255,.15),rgba(168,85,247,.15));
  border:1px solid rgba(0,229,255,.2);
  color:var(--primary);
}
.method-card h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:12px}
.method-card p{font-size:14px;color:var(--text-muted);line-height:1.75;margin-bottom:16px}
.method-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;padding:4px 12px;border-radius:20px;
  font-size:12px;font-weight:600;color:var(--text-muted);
  background:rgba(255,255,255,.04);border:1px solid var(--border);
}

.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.stat-item{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:36px 24px;text-align:center;
  transition:all var(--transition);
}
.stat-item:hover{border-color:rgba(0,229,255,.3);box-shadow:var(--shadow-md);transform:translateY(-4px)}
.stat-num{
  font-size:42px;font-weight:900;color:var(--primary);
  line-height:1.2;margin-bottom:6px;
  text-shadow:0 0 20px var(--primary-glow);
}
.stat-label{font-size:14px;color:var(--text-muted)}

.article-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:all var(--transition);
  height:100%;
  display:flex;flex-direction:column;
}
.article-card:hover{transform:translateY(-6px);border-color:var(--border-light);box-shadow:var(--shadow-lg)}
.article-cover{position:relative;overflow:hidden;aspect-ratio:16/9}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.article-card:hover .article-cover img{transform:scale(1.05)}
.article-body{padding:24px;flex:1;display:flex;flex-direction:column}
.article-cat{
  align-self:flex-start;margin-bottom:12px;
  padding:4px 12px;border-radius:20px;font-size:12px;font-weight:700;
  color:var(--primary);background:rgba(0,229,255,.1);border:1px solid rgba(0,229,255,.2);
}
.article-body h3{font-size:18px;font-weight:700;color:#fff;line-height:1.5;margin-bottom:12px}
.article-body p{font-size:13px;color:var(--text-muted);line-height:1.7;margin-bottom:16px;flex:1}
.article-meta{
  display:flex;align-items:center;gap:16px;
  font-size:12px;color:var(--text-dim);
  border-top:1px solid var(--border);padding-top:14px;
}
.article-meta i{margin-right:4px;color:var(--primary)}

.faq-list{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-md);margin-bottom:14px;
  overflow:hidden;transition:all var(--transition);
}
.faq-item:hover{border-color:var(--border-light)}
.faq-item.active{border-color:rgba(0,229,255,.3)}
.faq-question{
  display:flex;align-items:center;gap:14px;
  padding:22px 28px;cursor:pointer;
  font-size:16px;font-weight:600;color:#fff;
  transition:background var(--transition);
}
.faq-question:hover{background:rgba(255,255,255,.03)}
.faq-icon{
  width:32px;height:32px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;background:rgba(0,229,255,.1);
  color:var(--primary);font-size:14px;
  transition:transform .3s;
}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-answer p{
  padding:0 28px 24px 74px;
  font-size:14px;color:var(--text-muted);line-height:1.8;
}

.cta-box{
  background:linear-gradient(135deg,rgba(0,229,255,.12),rgba(168,85,247,.12)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border:1px solid rgba(0,229,255,.2);
  border-radius:var(--radius-lg);
  padding:64px 48px;text-align:center;
  position:relative;overflow:hidden;
}
.cta-box::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 30% 50%,rgba(0,229,255,.08),transparent 60%);
}
.cta-box h2{font-size:32px;font-weight:800;color:#fff;margin-bottom:14px}
.cta-box p{font-size:16px;color:var(--text-muted);max-width:560px;margin:0 auto 28px}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.footer{
  background:var(--bg-deep);
  border-top:1px solid var(--border);
  padding-top:64px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;padding-bottom:48px;
}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.7;margin-top:16px}
.footer-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:20px;position:relative;padding-bottom:12px}
.footer-title::after{
  content:'';position:absolute;left:0;bottom:0;width:32px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  border-radius:2px;
}
.footer-links{list-style:none;margin:0}
.footer-links li{margin-bottom:10px}
.footer-links a{
  font-size:14px;color:var(--text-muted);
  display:inline-flex;align-items:center;gap:6px;
  transition:all var(--transition);
}
.footer-links a i{font-size:10px;color:var(--primary)}
.footer-links a:hover{color:var(--primary);transform:translateX(4px)}
.footer-contact{list-style:none;margin:0}
.footer-contact li{
  font-size:13px;color:var(--text-muted);
  display:flex;align-items:flex-start;gap:10px;
  margin-bottom:12px;line-height:1.6;
}
.footer-contact i{color:var(--primary);margin-top:3px;font-size:14px}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:22px 0;text-align:center;
}
.footer-bottom p{font-size:13px;color:var(--text-dim)}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--primary)}

.breadcrumb{
  max-width:1280px;margin:0 auto;padding:16px 24px 0;
  font-size:13px;color:var(--text-dim);
}
.breadcrumb a{color:var(--text-muted);margin:0 4px}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 6px;color:var(--text-dim)}

@media(max-width:1024px){
  :root{--space-section:72px}
  .category-banner h1{font-size:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}

@media(max-width:768px){
  .nav-toggle{display:flex}
  .nav-inner{flex-wrap:wrap}
  .nav-list{
    position:absolute;top:var(--header-hight);left:0;right:0;
    flex-direction:column;align-items:flex-start;
    background:rgba(6,10,18,.97);
    padding:16px 24px 24px;gap:6px;
    max-height:0;overflow:hidden;opacity:0;
    transition:max-height .4s ease,opacity .3s ease,visibility .3s;
    visibility:hidden;
  }
  .nav-list.open{
    max-height:400px;opacity:1;visibility:visible;
    border-bottom:1px solid var(--border);
    box-shadow:0 12px 30px rgba(0,0,0,.5);
  }
  .nav-list li{width:100%}
  .nav-link{width:100%;padding:12px 16px}
  .nav-cta{display:none}
  .category-banner{padding:90px 0 64px}
  .category-banner h1{font-size:30px}
  .section-head h2{font-size:26px}
  .flow-wrap{flex-direction:column}
  .flow-arrow{display:none}
  .method-card{padding:28px 22px}
  .cta-box{padding:48px 24px}
  .cta-box h2{font-size:24px}
}

@media(max-width:520px){
  :root{--space-section:56px}
  .brand-text{font-size:17px}
  .brand-icon{width:34px;height:34px;font-size:15px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:14px}
  .stat-num{font-size:32px}
  .category-banner h1{font-size:24px}
  .banner-desc{font-size:15px}
  .btn-primary,.btn-outline{width:100%;justify-content:center}
  .banner-btns{flex-direction:column;width:100%}
  .card{padding:24px}
  .faq-question{font-size:15px;padding:18px 20px}
  .faq-answer p{padding:0 20px 20px 58px}
  .footer-grid{grid-template-columns:1fr}
  .container{padding:0 18px}
}

/* roulang page: article */
:root {
  --bg-dark: #0a0e1a;
  --bg-deep: #060912;
  --bg-card: #121828;
  --bg-hover: #1a2235;
  --neon-primary: #00e5a0;
  --neon-secondary: #7c5cff;
  --text-primary: #e8edf5;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255, 255, 255, .08);
  --shadow-neon: 0 0 30px rgba(0, 229, 160, .15);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: .3s ease;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-main); font-size: 16px; line-height: 1.7; color: var(--text-primary); background: var(--bg-dark); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; transition: all var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input { font-family: inherit; }
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.grid-x { margin-left: -16px; margin-right: -16px; }
.cell { padding-left: 16px; padding-right: 16px; }
.btn-primary { display: inline-flex; align-items: center; gap: 10px; background: linear-gradient(135deg, #00e5a0, #00c98d); color: #0a0e1a; font-weight: 700; font-size: 16px; padding: 14px 30px; border-radius: 50px; border: none; cursor: pointer; box-shadow: 0 8px 24px rgba(0, 229, 160, .25); transition: all var(--transition); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(0, 229, 160, .38); color: #060912; }
.btn-outline { display: inline-flex; align-items: center; gap: 10px; border: 1px solid var(--neon-primary); color: var(--neon-primary); background: transparent; font-weight: 600; font-size: 16px; padding: 14px 30px; border-radius: 50px; cursor: pointer; transition: all var(--transition); }
.btn-outline:hover { background: rgba(0, 229, 160, .08); box-shadow: 0 0 20px rgba(0, 229, 160, .12); transform: translateY(-3px); color: var(--neon-primary); }
.btn-sm { padding: 10px 22px; font-size: 14px; }
.header { position: sticky; top: 0; z-index: 100; background: rgba(6, 9, 18, .92); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(0, 229, 160, .18); box-shadow: 0 4px 30px rgba(0, 0, 0, .4); }
.nav-inner { max-width: 1280px; margin: 0 auto; padding: 0 32px; display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { width: 42px; height: 42px; border-radius: 12px; background: linear-gradient(135deg, #00e5a0, #7c5cff); display: flex; align-items: center; justify-content: center; color: #0a0e1a; font-size: 20px; box-shadow: 0 0 20px rgba(0, 229, 160, .3); }
.brand-text { font-size: 20px; font-weight: 800; letter-spacing: .5px; color: #fff; }
.nav-list { display: flex; align-items: center; gap: 8px; }
.nav-link { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 50px; font-weight: 500; color: var(--text-secondary); position: relative; border: 1px solid transparent; }
.nav-link::after { content: ''; position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%); width: 0; height: 2px; border-radius: 2px; background: var(--neon-primary); box-shadow: 0 0 12px var(--neon-primary); transition: width .3s ease; }
.nav-link:hover { color: #fff; background: rgba(255, 255, 255, .04); }
.nav-link:hover::after, .nav-link.active::after { width: 60%; }
.nav-link.active { color: var(--neon-primary); }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.nav-cta { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, #00e5a0, #00c98d); color: #0a0e1a; font-weight: 700; font-size: 14px; padding: 10px 22px; border-radius: 50px; box-shadow: 0 4px 16px rgba(0, 229, 160, .2); transition: all var(--transition); }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(0, 229, 160, .35); color: #060912; }
.nav-toggle { display: none; width: 44px; height: 44px; background: transparent; border: 1px solid var(--border-color); border-radius: 10px; cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all .3s ease; }
.article-hero { position: relative; padding: 120px 0 80px; background-size: cover; background-position: center; overflow: hidden; }
.article-hero-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6, 9, 18, .55), rgba(6, 9, 18, .88)); }
.article-hero .container { position: relative; z-index: 1; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-secondary); margin-bottom: 28px; flex-wrap: wrap; }
.breadcrumb a { color: var(--neon-primary); }
.breadcrumb a:hover { text-shadow: 0 0 12px rgba(0, 229, 160, .5); }
.breadcrumb i { font-size: 12px; color: var(--text-muted); }
.article-hero-content { max-width: 860px; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(0, 229, 160, .12); border: 1px solid rgba(0, 229, 160, .3); color: var(--neon-primary); font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 50px; margin-bottom: 20px; letter-spacing: .4px; }
.article-hero-content h1 { font-size: 40px; line-height: 1.3; color: #fff; font-weight: 800; margin-bottom: 18px; letter-spacing: .5px; }
.hero-desc { font-size: 17px; line-height: 1.8; color: var(--text-secondary); margin-bottom: 26px; max-width: 760px; }
.article-meta { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; font-size: 14px; color: var(--text-muted); }
.article-meta i { color: var(--neon-primary); margin-right: 6px; }
.article-main { padding: 80px 0 40px; background: var(--bg-dark); }
.article-content { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 44px 48px; margin-bottom: 32px; box-shadow: 0 8px 40px rgba(0, 0, 0, .2); }
.article-content h2 { font-size: 30px; color: #fff; font-weight: 700; margin: 40px 0 18px; padding-left: 18px; border-left: 4px solid var(--neon-primary); line-height: 1.4; }
.article-content h2:first-child { margin-top: 0; }
.article-content h3 { font-size: 24px; color: #fff; font-weight: 700; margin: 32px 0 14px; }
.article-content p { font-size: 17px; line-height: 1.95; color: #c8d1e0; margin-bottom: 20px; }
.article-content ul { margin: 20px 0; padding-left: 20px; }
.article-content ul li { position: relative; padding-left: 16px; margin-bottom: 10px; color: #c8d1e0; font-size: 16px; line-height: 1.8; }
.article-content ul li::before { content: ''; position: absolute; left: 0; top: 12px; width: 6px; height: 6px; border-radius: 50%; background: var(--neon-primary); box-shadow: 0 0 8px rgba(0, 229, 160, .5); }
.article-content img { border-radius: var(--radius-md); margin: 28px 0; box-shadow: 0 6px 30px rgba(0, 0, 0, .3); }
.article-content blockquote { border-left: 4px solid var(--neon-primary); background: rgba(0, 229, 160, .05); padding: 18px 26px; border-radius: 0 var(--radius-md) var(--radius-md) 0; margin: 28px 0; color: #aeb8c8; font-style: normal; }
.article-content blockquote p { margin-bottom: 0; }
.article-content a { color: var(--neon-primary); border-bottom: 1px solid rgba(0, 229, 160, .3); }
.article-content a:hover { text-shadow: 0 0 12px rgba(0, 229, 160, .3); }
.article-tags { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.article-tags > span { font-size: 14px; color: var(--text-muted); font-weight: 600; }
.article-tags a { display: inline-block; background: rgba(124, 92, 255, .08); border: 1px solid rgba(124, 92, 255, .2); color: var(--neon-secondary); font-size: 13px; padding: 6px 16px; border-radius: 50px; transition: all var(--transition); }
.article-tags a:hover { background: rgba(124, 92, 255, .18); box-shadow: 0 0 16px rgba(124, 92, 255, .15); }
.article-share { display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--border-color); padding-top: 24px; margin-bottom: 10px; }
.article-share span { font-size: 14px; color: var(--text-muted); }
.article-share a { width: 40px; height: 40px; border-radius: 50%; background: var(--bg-hover); color: var(--text-secondary); display: flex; align-items: center; justify-content: center; font-size: 16px; transition: all var(--transition); }
.article-share a:hover { background: var(--neon-primary); color: #0a0e1a; box-shadow: 0 0 20px rgba(0, 229, 160, .3); }
.article-empty { text-align: center; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 80px 40px; margin-bottom: 32px; }
.article-empty i { font-size: 48px; color: var(--neon-secondary); margin-bottom: 20px; }
.article-empty h2 { font-size: 28px; color: #fff; margin-bottom: 12px; }
.article-empty p { color: var(--text-secondary); margin-bottom: 28px; }
.sidebar { position: sticky; top: 96px; display: flex; flex-direction: column; gap: 24px; }
.sidebar-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 26px; transition: all var(--transition); }
.sidebar-card:hover { border-color: rgba(0, 229, 160, .15); box-shadow: 0 4px 30px rgba(0, 0, 0, .2); }
.sidebar-title { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.sidebar-title i { color: var(--neon-primary); }
.sidebar-list li { border-bottom: 1px solid var(--border-color); }
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a { display: flex; flex-direction: column; gap: 4px; padding: 14px 0; }
.sidebar-list a:hover .sidebar-post-title { color: var(--neon-primary); }
.sidebar-post-cat { font-size: 12px; color: var(--neon-secondary); font-weight: 600; }
.sidebar-post-title { font-size: 14px; color: var(--text-secondary); line-height: 1.5; transition: all var(--transition); }
.sidebar-empty { font-size: 14px; color: var(--text-muted); padding: 12px 0; }
.sidebar-guide { background: linear-gradient(135deg, rgba(0, 229, 160, .06), rgba(124, 92, 255, .06)); border-color: rgba(0, 229, 160, .15); text-align: center; }
.guide-icon { width: 56px; height: 56px; border-radius: 16px; background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary)); display: inline-flex; align-items: center; justify-content: center; color: #0a0e1a; font-size: 24px; margin-bottom: 16px; box-shadow: 0 0 24px rgba(0, 229, 160, .2); }
.sidebar-guide h4 { font-size: 18px; color: #fff; margin-bottom: 10px; }
.sidebar-guide p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 18px; }
.sidebar-contact ul { margin-top: 14px; }
.sidebar-contact li { font-size: 14px; color: var(--text-secondary); padding: 8px 0; display: flex; align-items: center; gap: 10px; }
.sidebar-contact li i { color: var(--neon-primary); }
.related-section { padding: 70px 0; background: var(--bg-deep); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 40px; gap: 20px; }
.section-head.center { flex-direction: column; align-items: center; text-align: center; }
.section-head h2 { font-size: 32px; color: #fff; font-weight: 800; margin-bottom: 8px; position: relative; padding-bottom: 14px; }
.section-head h2::after { content: ''; position: absolute; left: 0; bottom: 0; width: 48px; height: 3px; border-radius: 3px; background: var(--neon-primary); box-shadow: 0 0 16px var(--neon-primary); }
.section-head.center h2::after { left: 50%; transform: translateX(-50%); }
.section-head p { color: var(--text-muted); font-size: 15px; }
.section-link { display: inline-flex; align-items: center; gap: 8px; color: var(--neon-primary); font-size: 15px; font-weight: 600; padding-bottom: 4px; border-bottom: 1px solid transparent; }
.section-link:hover { border-bottom-color: var(--neon-primary); text-shadow: 0 0 12px rgba(0, 229, 160, .3); }
.related-grid { row-gap: 28px; }
.related-card { display: block; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); overflow: hidden; height: 100%; transition: all var(--transition); }
.related-card:hover { transform: translateY(-6px); border-color: rgba(0, 229, 160, .25); box-shadow: 0 12px 30px rgba(0, 0, 0, .3), 0 0 24px rgba(0, 229, 160, .08); }
.related-img { position: relative; height: 180px; overflow: hidden; }
.related-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .related-img img { transform: scale(1.06); }
.related-img-tag { position: absolute; top: 14px; left: 14px; background: rgba(6, 9, 18, .8); backdrop-filter: blur(8px); color: var(--neon-primary); font-size: 12px; font-weight: 600; padding: 5px 14px; border-radius: 50px; border: 1px solid rgba(0, 229, 160, .2); }
.related-body { padding: 22px 24px 24px; }
.related-body h3 { font-size: 18px; color: #fff; font-weight: 700; line-height: 1.5; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 54px; transition: color var(--transition); }
.related-card:hover .related-body h3 { color: var(--neon-primary); }
.related-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--text-muted); }
.card-meta i { color: var(--neon-primary); margin-right: 4px; }
.card-more { color: var(--neon-primary); font-weight: 600; }
.empty-tip { text-align: center; background: var(--bg-card); border: 1px dashed var(--border-color); border-radius: var(--radius-lg); padding: 60px 30px; color: var(--text-muted); font-size: 15px; }
.empty-tip i { font-size: 30px; color: var(--text-muted); margin-bottom: 14px; }
.steps-section { padding: 80px 0; background: var(--bg-dark); }
.steps-grid { row-gap: 24px; margin-top: 48px; }
.step-item { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 32px 28px; text-align: center; position: relative; transition: all var(--transition); height: 100%; }
.step-item:hover { transform: translateY(-4px); border-color: rgba(0, 229, 160, .2); box-shadow: 0 8px 30px rgba(0, 0, 0, .25), 0 0 20px rgba(0, 229, 160, .06); }
.step-num { position: absolute; top: 14px; right: 18px; font-size: 44px; font-weight: 800; color: rgba(255, 255, 255, .05); line-height: 1; }
.step-icon { width: 64px; height: 64px; border-radius: 18px; background: linear-gradient(135deg, rgba(0, 229, 160, .12), rgba(124, 92, 255, .12)); border: 1px solid rgba(0, 229, 160, .15); display: inline-flex; align-items: center; justify-content: center; font-size: 26px; color: var(--neon-primary); margin-bottom: 18px; transition: all var(--transition); }
.step-item:hover .step-icon { box-shadow: 0 0 24px rgba(0, 229, 160, .2); }
.step-item h4 { font-size: 18px; color: #fff; font-weight: 700; margin-bottom: 10px; }
.step-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.cta-section { padding: 70px 0 90px; background: var(--bg-deep); }
.cta-box { position: relative; border-radius: var(--radius-lg); overflow: hidden; background-size: cover; background-position: center; padding: 70px 60px; text-align: center; border: 1px solid var(--border-color); }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(6, 9, 18, .9), rgba(10, 14, 26, .75)); }
.cta-content { position: relative; z-index: 1; }
.cta-content h2 { font-size: 32px; color: #fff; font-weight: 800; margin-bottom: 14px; }
.cta-content p { font-size: 16px; color: var(--text-secondary); margin-bottom: 30px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.footer { background: var(--bg-deep); border-top: 1px solid var(--border-color); }
.footer .container { padding-top: 60px; padding-bottom: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; max-width: 320px; }
.footer-title { font-size: 16px; color: #fff; font-weight: 700; margin-bottom: 22px; position: relative; padding-bottom: 12px; }
.footer-title::after { content: ''; position: absolute; left: 0; bottom: 0; width: 24px; height: 2px; background: var(--neon-primary); box-shadow: 0 0 10px var(--neon-primary); }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 6px; transition: all var(--transition); }
.footer-links a i { font-size: 11px; color: var(--neon-primary); }
.footer-links a:hover { color: var(--neon-primary); transform: translateX(4px); }
.footer-contact li { font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: var(--neon-primary); }
.footer-bottom { border-top: 1px solid var(--border-color); padding: 22px 0; }
.footer-bottom p { text-align: center; font-size: 13px; color: var(--text-muted); }
.footer-bottom a { color: var(--text-secondary); }
.footer-bottom a:hover { color: var(--neon-primary); }
@media (max-width: 1024px) {
  .article-hero { padding: 100px 0 60px; }
  .article-hero-content h1 { font-size: 34px; }
  .article-content { padding: 34px 32px; }
  .article-main { padding: 60px 0 30px; }
  .related-section, .steps-section { padding: 55px 0; }
  .cta-section { padding: 55px 0 70px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .sidebar { position: static; margin-top: 32px; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; height: 64px; }
  .nav-list { position: absolute; top: 64px; left: 0; right: 0; background: rgba(6, 9, 18, .98); flex-direction: column; align-items: flex-start; padding: 16px 20px; gap: 4px; border-bottom: 1px solid rgba(0, 229, 160, .15); display: none; }
  .nav-open .nav-list { display: flex; }
  .nav-link { width: 100%; border-radius: var(--radius-sm); }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-open .nav-toggle span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-open .nav-toggle span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .article-hero { padding: 80px 0 50px; }
  .article-hero-content h1 { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .article-meta { gap: 14px; }
  .article-content { padding: 24px 18px; }
  .article-content h2 { font-size: 24px; }
  .article-content p { font-size: 15px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .section-head h2 { font-size: 26px; }
  .cta-box { padding: 50px 24px; }
  .cta-content h2 { font-size: 26px; }
}
@media (max-width: 520px) {
  .brand-text { font-size: 17px; }
  .brand-icon { width: 36px; height: 36px; font-size: 17px; }
  .article-hero-content h1 { font-size: 23px; }
  .article-hero { padding: 70px 0 40px; }
  .breadcrumb { font-size: 12px; }
  .article-meta span { font-size: 12px; }
  .article-content h2 { font-size: 21px; padding-left: 12px; }
  .article-content h3 { font-size: 19px; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .cta-actions { flex-direction: column; width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .related-body { padding: 18px; }
}