/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --c-bg-0: #070b12;
  --c-bg-1: #0c1420;
  --c-bg-2: #111c2e;
  --c-card: #162238;
  --c-card-2: #1a2a42;
  --c-neon: #00e5ff;
  --c-neon-dim: rgba(0, 229, 255, 0.35);
  --c-magenta: #ff2d78;
  --c-magenta-dim: rgba(255, 45, 120, 0.3);
  --c-text: #eaf2f8;
  --c-text-2: #9fb0c3;
  --c-text-3: #64748b;
  --c-border: rgba(255, 255, 255, 0.08);
  --c-border-2: rgba(0, 229, 255, 0.22);
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-neon: 0 0 25px rgba(0, 229, 255, 0.15);
  --space-section: 96px;
  --space-section-sm: 64px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background: var(--c-bg-0);
  color: var(--c-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }

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

/* ===== 通用组件 ===== */
.section { padding: var(--space-section) 0; position: relative; }
.section-sm { padding: var(--space-section-sm) 0; }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-head .tagline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-neon);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--c-border-2);
  border-radius: 100px;
  padding: 6px 18px;
  margin-bottom: 18px;
}
.section-head h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 14px;
}
.section-head h2 span { color: var(--c-neon); }
.section-head p { color: var(--c-text-2); font-size: 1.05rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 100px;
  padding: 13px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}
.btn-primary {
  background: linear-gradient(135deg, var(--c-neon) 0%, #00b3cc 100%);
  color: #06121a;
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 35px rgba(0, 229, 255, 0.45);
  color: #06121a;
}
.btn-outline {
  background: transparent;
  color: var(--c-text);
  border: 1px solid var(--c-border);
}
.btn-outline:hover {
  border-color: var(--c-neon);
  color: var(--c-neon);
  box-shadow: var(--shadow-neon);
}
.btn-magenta {
  background: linear-gradient(135deg, var(--c-magenta) 0%, #d61f64 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 45, 120, 0.3);
}
.btn-magenta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 35px rgba(255, 45, 120, 0.45);
  color: #fff;
}

.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid var(--c-border-2);
  background: rgba(0, 229, 255, 0.07);
  color: var(--c-neon);
}

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

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(7, 11, 18, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--c-border);
  transition: all var(--transition);
}
.site-header.scrolled {
  background: rgba(7, 11, 18, 0.97);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  color: var(--c-text);
}
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-neon), var(--c-magenta));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.25);
}
.logo-text { background: linear-gradient(135deg, var(--c-neon) 20%, #7ff4ff 60%, var(--c-magenta) 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-menu a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--c-text-2);
  position: relative;
  transition: all var(--transition);
}
.nav-menu a i { font-size: 0.82rem; opacity: 0.7; transition: opacity var(--transition); }
.nav-menu a:hover { color: var(--c-neon); background: rgba(0, 229, 255, 0.06); }
.nav-menu a:hover i { opacity: 1; }
.nav-menu a.active {
  color: var(--c-neon);
  background: rgba(0, 229, 255, 0.08);
  box-shadow: inset 0 0 0 1px var(--c-border-2);
}
.nav-menu a.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--c-neon);
  border-radius: 2px;
  box-shadow: 0 0 12px var(--c-neon);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-cta .btn { padding: 9px 22px; font-size: 0.85rem; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--c-border);
  color: var(--c-text);
  width: 42px;
  height: 42px;
  border-radius: 10px;
  font-size: 1.1rem;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.nav-toggle:hover { border-color: var(--c-neon); color: var(--c-neon); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 140px 0 90px;
  background: linear-gradient(180deg, rgba(7, 11, 18, 0.86) 0%, rgba(10, 18, 30, 0.92) 45%, var(--c-bg-0) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: 15%;
  right: -120px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.12), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: 5%;
  left: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 45, 120, 0.1), transparent 70%);
  filter: blur(50px);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-content .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--c-border-2);
  border-radius: 100px;
  padding: 7px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-neon);
  margin-bottom: 24px;
}
.hero-content .hero-badge i { font-size: 0.75rem; }
.hero-content h1 {
  font-size: clamp(2.2rem, 4.8vw, 3.6rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}
.hero-content h1 .grad {
  background: linear-gradient(135deg, var(--c-neon) 10%, #7ff4ff 50%, var(--c-magenta) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-content .hero-desc {
  font-size: 1.1rem;
  color: var(--c-text-2);
  line-height: 1.8;
  margin-bottom: 30px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 24px;
  border-top: 1px solid var(--c-border);
  padding-top: 28px;
}
.hero-stats .stat-item { text-align: left; }
.hero-stats .stat-num {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--c-text);
  line-height: 1.2;
}
.hero-stats .stat-num em { font-style: normal; color: var(--c-neon); }
.hero-stats .stat-label { font-size: 0.82rem; color: var(--c-text-3); margin-top: 4px; }

.hero-visual {
  position: relative;
}
.hero-visual .main-card {
  background: rgba(17, 28, 46, 0.75);
  border: 1px solid var(--c-border);
  border-radius: 24px;
  padding: 28px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  position: relative;
}
.hero-visual .main-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), transparent 40%, rgba(255, 45, 120, 0.06));
  pointer-events: none;
}
.visual-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.visual-title h3 { font-size: 1rem; font-weight: 700; }
.visual-title .live-dot {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: #6ee7a0;
}
.live-dot i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #6ee7a0;
  box-shadow: 0 0 10px #6ee7a0;
  animation: pulse-dot 1.5s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}
.visual-list { display: flex; flex-direction: column; gap: 14px; }
.visual-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  transition: all var(--transition);
}
.visual-item:hover { border-color: var(--c-border-2); background: rgba(0, 229, 255, 0.04); }
.visual-item .item-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.95rem;
}
.visual-item .item-icon.i1 { background: rgba(0, 229, 255, 0.12); color: var(--c-neon); }
.visual-item .item-icon.i2 { background: rgba(255, 45, 120, 0.12); color: var(--c-magenta); }
.visual-item .item-icon.i3 { background: rgba(110, 231, 160, 0.12); color: #6ee7a0; }
.visual-item .item-icon.i4 { background: rgba(250, 204, 21, 0.12); color: #facd15; }
.visual-item .item-info { flex: 1; min-width: 0; }
.visual-item .item-info .item-name { font-size: 0.88rem; font-weight: 600; }
.visual-item .item-info .item-desc { font-size: 0.75rem; color: var(--c-text-3); margin-top: 2px; }
.visual-item .item-arrow { color: var(--c-text-3); font-size: 0.8rem; }
.visual-floating {
  position: absolute;
  bottom: -20px;
  left: -18px;
  background: rgba(17, 28, 46, 0.9);
  border: 1px solid var(--c-border-2);
  border-radius: 16px;
  padding: 14px 20px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: float-y 3s ease-in-out infinite;
}
@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.visual-floating i { color: var(--c-neon); font-size: 1.2rem; }
.visual-floating .f-text .f-t { font-size: 0.8rem; font-weight: 700; }
.visual-floating .f-text .f-s { font-size: 0.7rem; color: var(--c-text-3); }

/* ===== 核心说明 ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: center;
}
.intro-media {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.intro-media img { width: 100%; height: 420px; object-fit: cover; transition: transform 0.6s ease; }
.intro-media:hover img { transform: scale(1.04); }
.intro-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(7, 11, 18, 0.8));
}
.intro-media .media-badge {
  position: absolute;
  bottom: 18px;
  left: 18px;
  z-index: 2;
  background: rgba(7, 11, 18, 0.8);
  border: 1px solid var(--c-border-2);
  border-radius: 12px;
  padding: 10px 16px;
  font-size: 0.82rem;
  color: var(--c-neon);
  backdrop-filter: blur(10px);
}
.intro-content .tagline { display: inline-flex; align-items: center; gap: 8px; font-size: 0.82rem; font-weight: 600; letter-spacing: 0.1em; color: var(--c-neon); background: rgba(0, 229, 255, 0.07); border: 1px solid var(--c-border-2); border-radius: 100px; padding: 6px 16px; margin-bottom: 20px; }
.intro-content h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 800; line-height: 1.3; margin-bottom: 16px; letter-spacing: -0.02em; }
.intro-content p { color: var(--c-text-2); line-height: 1.85; margin-bottom: 16px; }
.intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
.intro-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  font-size: 0.88rem;
  transition: all var(--transition);
}
.intro-feature:hover { border-color: var(--c-border-2); background: rgba(0, 229, 255, 0.04); }
.intro-feature i { color: var(--c-neon); font-size: 1rem; flex-shrink: 0; }

/* ===== 分类入口 ===== */
.cats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.cat-card {
  position: relative;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  display: block;
}
.cat-card:hover {
  transform: translateY(-6px);
  border-color: var(--c-border-2);
  box-shadow: var(--shadow-lg), var(--shadow-neon);
}
.cat-card .cat-img {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.cat-card .cat-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.cat-card:hover .cat-img img { transform: scale(1.08); }
.cat-card .cat-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(7, 11, 18, 0.75));
}
.cat-card .cat-body { padding: 24px; position: relative; }
.cat-card .cat-tag { position: absolute; top: -14px; right: 20px; background: var(--c-card-2); border: 1px solid var(--c-border-2); border-radius: 100px; padding: 5px 14px; font-size: 0.75rem; font-weight: 600; color: var(--c-neon); z-index: 2; }
.cat-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.cat-card p { font-size: 0.85rem; color: var(--c-text-2); line-height: 1.7; margin-bottom: 16px; }
.cat-card .cat-link { display: inline-flex; align-items: center; gap: 6px; font-size: 0.85rem; font-weight: 600; color: var(--c-neon); }
.cat-card .cat-link i { transition: transform var(--transition); }
.cat-card:hover .cat-link i { transform: translateX(4px); }

/* ===== 最新资讯 ===== */
.news-section { background: var(--c-bg-1); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.news-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
  display: block;
}
.news-card:hover {
  border-color: var(--c-border-2);
  box-shadow: var(--shadow-md), var(--shadow-neon);
  transform: translateY(-3px);
}
.news-card .news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.78rem;
  color: var(--c-text-3);
}
.news-card .news-meta .tag { font-size: 0.72rem; padding: 3px 10px; }
.news-card .news-meta .time i { margin-right: 4px; }
.news-card h3 { font-size: 1.05rem; font-weight: 700; line-height: 1.5; margin-bottom: 10px; transition: color var(--transition); }
.news-card:hover h3 { color: var(--c-neon); }
.news-card p { font-size: 0.85rem; color: var(--c-text-2); line-height: 1.7; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .news-more { font-size: 0.82rem; font-weight: 600; color: var(--c-text-3); display: inline-flex; align-items: center; gap: 6px; }
.news-card .news-more i { transition: transform var(--transition); font-size: 0.75rem; }
.news-card:hover .news-more { color: var(--c-neon); }
.news-card:hover .news-more i { transform: translateX(4px); }

/* ===== 特色亮点 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.feature-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--c-neon), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover::before { opacity: 1; }
.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-border-2);
}
.feature-card .feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--c-neon);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--c-border-2);
  transition: all var(--transition);
}
.feature-card:hover .feature-icon {
  color: #fff;
  background: linear-gradient(135deg, var(--c-neon), #00a3bd);
  box-shadow: 0 8px 25px rgba(0, 229, 255, 0.3);
}
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 0.83rem; color: var(--c-text-2); line-height: 1.7; }

/* ===== 数据统计 ===== */
.stats-gradient {
  position: relative;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.06), rgba(255, 45, 120, 0.06)), var(--c-bg-1);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}
.stat-block .stat-num {
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--c-neon), #7ff4ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}
.stat-block .stat-num.magenta {
  background: linear-gradient(135deg, var(--c-magenta), #ff7096);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-block .stat-label { font-size: 0.88rem; color: var(--c-text-2); margin-top: 6px; }

/* ===== 流程 ===== */
.steps-wrap { max-width: 860px; margin: 0 auto; position: relative; }
.steps-wrap::before {
  content: "";
  position: absolute;
  top: 30px;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background: linear-gradient(180deg, var(--c-neon-dim), transparent 60%);
}
.step-item {
  display: grid;
  grid-template-columns: 1fr 70px 1fr;
  align-items: center;
  gap: 20px;
  margin-bottom: 34px;
  position: relative;
}
.step-item:last-child { margin-bottom: 0; }
.step-item .step-node {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--c-neon);
  background: var(--c-bg-0);
  border: 2px solid var(--c-border-2);
  box-shadow: 0 0 25px rgba(0, 229, 255, 0.15);
  z-index: 2;
}
.step-item .step-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 16px;
  padding: 22px 24px;
  transition: all var(--transition);
}
.step-item .step-card:hover { border-color: var(--c-border-2); box-shadow: var(--shadow-neon); }
.step-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.step-card P { font-size: 0.84rem; color: var(--c-text-2); line-height: 1.6; }
.step-item.is-right .step-card { text-align: left; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 16px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item.open { border-color: var(--c-border-2); background: var(--c-card-2); }
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  color: var(--c-text);
  font-size: 0.98rem;
  font-weight: 600;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--c-neon); }
.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--c-border-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--c-neon);
  flex-shrink: 0;
  transition: all var(--transition);
}
.faq-item.open .faq-icon { background: var(--c-neon); color: #06121a; transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer p {
  padding: 0 26px 22px;
  color: var(--c-text-2);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section { position: relative; padding: 90px 0; background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(255, 45, 120, 0.08)), url('/assets/images/backpic/back-2.png') center/cover; }
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(7, 11, 18, 0.75);
  backdrop-filter: blur(4px);
}
.cta-box {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-box h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 800; margin-bottom: 16px; letter-spacing: -0.02em; }
.cta-box h2 span { color: var(--c-neon); }
.cta-box p { color: var(--c-text-2); font-size: 1.02rem; line-height: 1.8; margin-bottom: 32px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--c-bg-0);
  border-top: 1px solid var(--c-border);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.85rem; color: var(--c-text-3); line-height: 1.8; max-width: 280px; }
.footer-col h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { font-size: 0.85rem; color: var(--c-text-2); transition: all var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.footer-col ul a:hover { color: var(--c-neon); transform: translateX(4px); }
.footer-col ul a i { font-size: 0.65rem; opacity: 0.6; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.85rem; color: var(--c-text-2); line-height: 1.7; }
.footer-contact li i { color: var(--c-neon); margin-top: 4px; font-size: 0.9rem; }
.footer-bottom {
  border-top: 1px solid var(--c-border);
  padding: 24px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--c-text-3);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 520px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .cats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(7, 11, 18, 0.98);
    border-bottom: 1px solid var(--c-border);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px;
    gap: 6px;
    transform: translateY(-120%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(20px);
    visibility: hidden;
  }
  .nav-menu.open { transform: translateY(0); visibility: visible; }
  .nav-menu a { padding: 12px 16px; font-size: 1rem; }
  .nav-menu a.active::after { display: none; }
  .nav-menu a.active { border-left: 3px solid var(--c-neon); }
  .nav-toggle { display: flex; }
  .nav-cta .btn-outline { display: none; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro-media img { height: 280px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .steps-wrap::before { left: 35px; }
  .step-item { grid-template-columns: 35px 1fr; gap: 14px; }
  .step-item .step-node { width: 54px; height: 54px; font-size: 1rem; grid-column: 1; }
  .step-item .step-card { grid-column: 2; grid-row: 1; }
  .step-item.is-right .step-card { text-align: left; }
  .news-grid { grid-template-columns: 1fr; }
  .faq-question { padding: 18px 20px; font-size: 0.92rem; }
  .faq-answer p { padding: 0 20px 18px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .hero { padding-top: 110px; padding-bottom: 60px; min-height: auto; }
  .hero-content h1 { font-size: 1.9rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .cats-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .section-head { margin-bottom: 36px; }
  .section-head h2 { font-size: 1.5rem; }
  .nav-cta .btn { display: none; }
  .logo-text { font-size: 1.05rem; }
  .cta-actions .btn { width: 100%; }
  .visual-floating { bottom: -16px; left: 8px; }
}

/* focus 可访问性 */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 2px;
  border-radius: 4px;
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
    --c-bg: #070b14;
    --c-bg-soft: #0d1424;
    --c-surface: #111a2e;
    --c-card: #16203a;
    --c-card-hover: #1b2745;
    --c-primary: #00e5ff;
    --c-primary-dim: rgba(0, 229, 255, 0.12);
    --c-secondary: #ff5e9c;
    --c-secondary-dim: rgba(255, 94, 156, 0.12);
    --c-accent: #ffd166;
    --c-text: #eef4ff;
    --c-text-2: #b4c2db;
    --c-text-3: #7d8fae;
    --c-border: rgba(0, 229, 255, 0.18);
    --c-border-soft: rgba(255, 255, 255, 0.08);
    --gradient-primary: linear-gradient(135deg, #00e5ff 0%, #ff5e9c 100%);
    --gradient-text: linear-gradient(135deg, #00e5ff, #7cffd8, #ff5e9c);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 999px;
    --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 12px 40px rgba(0, 229, 255, 0.14);
    --shadow-glow: 0 0 24px rgba(0, 229, 255, 0.25);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height: 74px;
    --section-pad: 96px 0;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
body {
    font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
    background: var(--c-bg);
    color: var(--c-text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img {
    max-width: 100%;
    display: block;
    border: 0;
}
a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}
button {
    font-family: inherit;
    font-size: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
}
input, textarea {
    font-family: inherit;
    font-size: inherit;
}
ul, ol {
    list-style: none;
}
::selection {
    background: rgba(0, 229, 255, 0.3);
    color: #fff;
}
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--c-bg-soft);
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #00e5ff, #ff5e9c);
    border-radius: 4px;
}

/* ===== 容器 ===== */
.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 排版 ===== */
h1, h2, h3, h4, h5 {
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -0.02em;
}
h1 {
    font-size: clamp(2rem, 4vw, 3.2rem);
}
h2 {
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    margin-bottom: 12px;
}
h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}
p {
    color: var(--c-text-2);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    transition: var(--transition);
    border: 1px solid transparent;
}
.btn i {
    font-size: 0.9em;
}
.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 18px rgba(0, 229, 255, 0.25);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 94, 156, 0.35);
}
.btn-ghost {
    border-color: var(--c-border);
    color: var(--c-text);
    background: rgba(255, 255, 255, 0.03);
}
.btn-ghost:hover {
    border-color: var(--c-primary);
    color: var(--c-primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}
.btn-lg {
    padding: 16px 42px;
    font-size: 1.05rem;
}

/* ===== 徽章 / 标签 ===== */
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--c-primary-dim);
    border: 1px solid rgba(0, 229, 255, 0.25);
    color: var(--c-primary);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.section-tag::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--c-primary);
    box-shadow: 0 0 10px var(--c-primary);
}
.badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: var(--radius-full);
}
.badge-outline {
    background: transparent;
    border: 1px solid var(--c-border);
    color: var(--c-primary);
}

/* ===== 头部导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(7, 11, 20, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--c-border-soft);
    height: var(--nav-height);
    display: flex;
    align-items: center;
}
.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--gradient-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.05rem;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}
.logo-text {
    font-size: 1.2rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-menu a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: var(--c-text-2);
    font-size: 0.92rem;
    font-weight: 500;
    position: relative;
}
.nav-menu a i {
    font-size: 0.85rem;
    opacity: 0.8;
}
.nav-menu a:hover {
    color: var(--c-primary);
    background: var(--c-primary-dim);
}
.nav-menu a.active {
    color: var(--c-primary);
    background: var(--c-primary-dim);
    box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.25), 0 0 18px rgba(0, 229, 255, 0.15);
}
.nav-menu a.active::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2px;
    border-radius: 2px;
    background: var(--gradient-primary);
    box-shadow: 0 0 10px var(--c-primary);
}
.nav-cta {
    display: flex;
    align-items: center;
    gap: 12px;
}
.nav-cta .btn {
    padding: 9px 20px;
    font-size: 0.88rem;
}
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 1px solid var(--c-border-soft);
    background: var(--c-surface);
    color: var(--c-primary);
    font-size: 1.15rem;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.nav-toggle:hover {
    border-color: var(--c-primary);
    box-shadow: var(--shadow-glow);
}

/* ===== 页面 Hero 横幅 ===== */
.page-hero {
    position: relative;
    min-height: 360px;
    display: flex;
    align-items: center;
    padding: 80px 0 60px;
    background: url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(120deg, rgba(7, 11, 20, 0.92) 0%, rgba(7, 11, 20, 0.72) 50%, rgba(7, 11, 20, 0.55) 100%);
}
.page-hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-primary), var(--c-secondary), transparent);
    opacity: 0.7;
}
.page-hero .container {
    position: relative;
    z-index: 2;
    max-width: 900px;
    text-align: center;
}
.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--c-text-3);
    margin-bottom: 20px;
}
.breadcrumb a {
    color: var(--c-primary);
}
.breadcrumb i {
    font-size: 0.7rem;
    color: var(--c-text-3);
}
.page-hero h1 {
    font-size: clamp(2rem, 4.5vw, 3rem);
    background: linear-gradient(135deg, #fff 0%, #e6f7ff 60%, var(--c-primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
}
.page-hero p {
    font-size: 1.05rem;
    max-width: 680px;
    margin: 0 auto;
    color: var(--c-text-2);
}
.hero-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 24px;
}
.hero-badges .badge {
    font-size: 0.82rem;
    padding: 5px 16px;
}

/* ===== 通用板块 ===== */
.section {
    padding: var(--section-pad);
}
.section-alt {
    background: var(--c-bg-soft);
    border-top: 1px solid var(--c-border-soft);
    border-bottom: 1px solid var(--c-border-soft);
}
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}
.section-head h2 {
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    color: var(--c-text);
}
.section-head p {
    font-size: 0.98rem;
    margin-top: 4px;
}

/* ===== 平台概览 ===== */
.overview-grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 56px;
    align-items: center;
}
.overview-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--c-border-soft);
}
.overview-image img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.overview-image:hover img {
    transform: scale(1.04);
}
.overview-image::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(7, 11, 20, 0.35) 100%);
}
.overview-content h3 {
    font-size: 1.5rem;
    margin-bottom: 14px;
    color: var(--c-text);
}
.overview-content p {
    margin-bottom: 16px;
    font-size: 0.98rem;
}
.overview-list {
    margin-top: 20px;
}
.overview-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--c-border-soft);
    color: var(--c-text-2);
    font-size: 0.95rem;
}
.overview-list li:last-child {
    border-bottom: none;
}
.overview-list li i {
    color: var(--c-primary);
    font-size: 0.95rem;
    margin-top: 4px;
    flex-shrink: 0;
}

/* ===== 核心特色卡片 ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature-card {
    background: var(--c-card);
    border: 1px solid var(--c-border-soft);
    border-radius: var(--radius-md);
    padding: 30px 26px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}
.feature-card:hover {
    background: var(--c-card-hover);
    border-color: var(--c-border);
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}
.feature-card:hover::before {
    opacity: 1;
}
.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--c-primary-dim);
    border: 1px solid rgba(0, 229, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--c-primary);
    margin-bottom: 18px;
    transition: var(--transition);
}
.feature-card:hover .feature-icon {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
}
.feature-card h3 {
    color: var(--c-text);
    font-size: 1.05rem;
    margin-bottom: 10px;
}
.feature-card p {
    font-size: 0.9rem;
    line-height: 1.65;
}

/* ===== 数据统计 ===== */
.stats-section {
    position: relative;
    padding: 80px 0;
    background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    overflow: hidden;
}
.stats-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(7, 11, 20, 0.92), rgba(13, 20, 36, 0.88));
}
.stats-section .container {
    position: relative;
    z-index: 2;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.stat-item {
    text-align: center;
    padding: 32px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--c-border-soft);
    border-radius: var(--radius-md);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.stat-item:hover {
    border-color: var(--c-border);
    box-shadow: var(--shadow-glow);
}
.stat-number {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
    margin-bottom: 8px;
}
.stat-label {
    color: var(--c-text-2);
    font-size: 0.9rem;
}

/* ===== 发展历程 ===== */
.timeline-wrap {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}
.timeline-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    position: relative;
}
.timeline-grid::before {
    content: "";
    position: absolute;
    top: 30px;
    left: 6%;
    right: 6%;
    height: 2px;
    background: linear-gradient(90deg, rgba(0, 229, 255, 0.7), rgba(255, 94, 156, 0.7));
    border-radius: 2px;
}
.timeline-node {
    position: relative;
    text-align: center;
    padding: 0 8px;
}
.timeline-dot {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--c-bg);
    border: 3px solid var(--c-primary);
    margin: 0 auto 18px;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.15), 0 0 16px rgba(0, 229, 255, 0.4);
}
.timeline-node:nth-child(2) .timeline-dot { border-color: #7cffd8; box-shadow: 0 0 0 4px rgba(124, 255, 216, 0.12), 0 0 16px rgba(124, 255, 216, 0.4); }
.timeline-node:nth-child(3) .timeline-dot { border-color: var(--c-accent); box-shadow: 0 0 0 4px rgba(255, 209, 102, 0.12), 0 0 16px rgba(255, 209, 102, 0.4); }
.timeline-node:nth-child(4) .timeline-dot { border-color: var(--c-secondary); box-shadow: 0 0 0 4px rgba(255, 94, 156, 0.12), 0 0 16px rgba(255, 94, 156, 0.4); }
.timeline-card {
    background: var(--c-card);
    border: 1px solid var(--c-border-soft);
    border-radius: var(--radius-md);
    padding: 22px 18px;
    text-align: left;
    transition: var(--transition);
}
.timeline-card:hover {
    border-color: var(--c-border);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.timeline-step {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--c-primary);
    letter-spacing: 1px;
    margin-bottom: 6px;
    text-transform: uppercase;
}
.timeline-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--c-text);
}
.timeline-card p {
    font-size: 0.85rem;
    margin-bottom: 0;
}

/* ===== 资讯列表 ===== */
.article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.article-card {
    background: var(--c-card);
    border: 1px solid var(--c-border-soft);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.article-card:hover {
    border-color: var(--c-border);
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}
.article-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
}
.article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.article-card:hover .article-thumb img {
    transform: scale(1.06);
}
.article-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(7, 11, 20, 0.5) 100%);
}
.article-thumb .badge {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
}
.article-body {
    padding: 22px 22px 26px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.article-body h3 {
    font-size: 1.02rem;
    margin-bottom: 10px;
    color: var(--c-text);
    line-height: 1.5;
}
.article-body p {
    font-size: 0.88rem;
    margin-bottom: 16px;
    flex: 1;
}
.article-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--c-text-3);
    border-top: 1px solid var(--c-border-soft);
    padding-top: 14px;
}
.article-meta i {
    margin-right: 4px;
    color: var(--c-primary);
}
.article-meta a {
    color: var(--c-primary);
    font-size: 0.82rem;
    font-weight: 600;
}
.article-meta a:hover {
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
}

/* ===== FAQ ===== */
.faq-wrap {
    max-width: 820px;
    margin: 0 auto;
}
.faq-item {
    background: var(--c-card);
    border: 1px solid var(--c-border-soft);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover {
    border-color: var(--c-border);
}
.faq-item.open {
    border-color: rgba(0, 229, 255, 0.35);
    box-shadow: var(--shadow-glow);
}
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    color: var(--c-text);
    font-weight: 600;
    font-size: 0.98rem;
    text-align: left;
    transition: var(--transition);
}
.faq-question:hover {
    color: var(--c-primary);
}
.faq-question .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--c-primary-dim);
    border: 1px solid rgba(0, 229, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--c-primary);
    flex-shrink: 0;
    transition: var(--transition);
}
.faq-item.open .faq-icon {
    background: var(--gradient-primary);
    color: #fff;
    transform: rotate(45deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
.faq-answer-inner {
    padding: 0 24px 22px;
    font-size: 0.92rem;
    color: var(--c-text-2);
    line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
    padding: 80px 0;
    background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(7, 11, 20, 0.93), rgba(13, 20, 36, 0.85));
}
.cta-box {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
    padding: 48px 40px;
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-card);
}
.cta-box h2 {
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    margin-bottom: 14px;
}
.cta-box p {
    margin-bottom: 30px;
    font-size: 1rem;
}
.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--c-bg-soft);
    border-top: 1px solid var(--c-border-soft);
    padding: 68px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
}
.footer-brand .logo {
    margin-bottom: 16px;
}
.footer-brand p {
    font-size: 0.88rem;
    line-height: 1.7;
    max-width: 340px;
}
.footer-col h4 {
    font-size: 0.95rem;
    color: var(--c-text);
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    color: var(--c-text-2);
    font-size: 0.88rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-col ul li a i {
    font-size: 0.65rem;
    color: var(--c-primary);
    opacity: 0.7;
}
.footer-col ul li a:hover {
    color: var(--c-primary);
    transform: translateX(3px);
}
.footer-contact li {
    color: var(--c-text-2);
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-contact li i {
    width: 18px;
    color: var(--c-primary);
    text-align: center;
}
.footer-bottom {
    border-top: 1px solid var(--c-border-soft);
    padding: 24px 0;
    text-align: center;
    font-size: 0.8rem;
    color: var(--c-text-3);
}

/* ===== 响应式断点 ===== */
@media (max-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .overview-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .overview-image img {
        height: 320px;
    }
    .timeline-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }
    .timeline-grid::before {
        display: none;
    }
    .nav-menu {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(7, 11, 20, 0.98);
        border-bottom: 1px solid var(--c-border);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px;
        gap: 6px;
        backdrop-filter: blur(16px);
    }
    .nav-menu.open {
        display: flex;
    }
    .nav-menu a {
        padding: 14px 16px;
    }
    .nav-menu a.active::after {
        left: 16px;
        transform: none;
        width: 20px;
    }
    .nav-toggle {
        display: inline-flex;
    }
}
@media (max-width: 768px) {
    :root {
        --section-pad: 70px 0;
    }
    .nav-cta .btn {
        display: none;
    }
    .page-hero {
        min-height: 300px;
        padding: 60px 0 44px;
    }
    .feature-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
    .article-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .cta-box {
        padding: 36px 24px;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .page-hero h1 {
        font-size: 1.7rem;
    }
    .page-hero p {
        font-size: 0.92rem;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .timeline-grid {
        grid-template-columns: 1fr;
    }
    .stat-item {
        padding: 24px 12px;
    }
    .logo-text {
        font-size: 1rem;
    }
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
    .section-head h2 {
        font-size: 1.5rem;
    }
    .overview-image img {
        height: 240px;
    }
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    .cta-actions .btn {
        width: 100%;
    }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --c-bg: #0b0e17;
  --c-bg-alt: #0d1220;
  --c-surface: #121a2c;
  --c-card: #161f33;
  --c-border: rgba(255,255,255,0.08);
  --c-primary: #6366f1;
  --c-primary-2: #8b5cf6;
  --c-accent: #22d3ee;
  --c-accent-2: #a855f7;
  --c-text: #e8ecf4;
  --c-text-2: #a7b0c3;
  --c-text-3: #6b7690;
  --gradient-main: linear-gradient(135deg, #6366f1 0%, #8b5cf6 55%, #a855f7 100%);
  --gradient-neon: linear-gradient(90deg, #22d3ee, #818cf8, #a855f7);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --shadow-hover: 0 16px 40px rgba(99,102,241,0.28);
  --space-section: 80px;
  --font: 'PingFang SC','Microsoft YaHei','Noto Sans SC',-apple-system,BlinkMacSystemFont,sans-serif;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background:
    linear-gradient(rgba(99,102,241,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.03) 1px, transparent 1px),
    var(--c-bg);
  background-size: 44px 44px;
  color: var(--c-text);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius-sm);
}
ul { list-style: none; }
button { background: none; border: none; font-family: inherit; color: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: all 0.3s ease;
  text-align: center;
  justify-content: center;
  border: 1px solid transparent;
}
.btn i { font-size: 0.9rem; }
.btn-primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99,102,241,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(139,92,246,0.45);
}
.btn-outline {
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--c-text);
  background: rgba(255,255,255,0.02);
}
.btn-outline:hover {
  border-color: var(--c-primary);
  background: rgba(99,102,241,0.12);
  box-shadow: 0 0 24px rgba(99,102,241,0.20);
}
.btn-lg {
  padding: 15px 38px;
  font-size: 1.05rem;
}

/* ===== Header 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11,14,23,0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}
.site-header::after {
  content: '';
  display: block;
  height: 2px;
  background: var(--gradient-neon);
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  opacity: 0.7;
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 17px;
  box-shadow: 0 0 22px rgba(99,102,241,0.45);
}
.logo-text {
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: 0.03em;
  background: linear-gradient(90deg, #f0f2ff, #b8c2ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-menu a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 0.92rem;
  color: var(--c-text-2);
  transition: all 0.25s ease;
  position: relative;
}
.nav-menu a i { font-size: 0.85rem; opacity: 0.85; }
.nav-menu a:hover {
  color: #fff;
  background: rgba(99,102,241,0.12);
}
.nav-menu a.active {
  color: #fff;
  background: rgba(99,102,241,0.20);
  box-shadow: inset 0 0 0 1px rgba(99,102,241,0.35), 0 0 24px rgba(99,102,241,0.18);
}
.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient-neon);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-cta .btn {
  padding: 10px 20px;
  font-size: 0.88rem;
}
.nav-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--c-text);
  transition: all 0.2s;
}
.nav-toggle:hover {
  background: rgba(99,102,241,0.18);
  color: #fff;
}

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  padding: 88px 0 72px;
  background-image: linear-gradient(to bottom, rgba(11,14,23,0.75), rgba(11,14,23,0.92)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center center;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--c-text-3);
  margin-bottom: 40px;
}
.breadcrumb a {
  color: var(--c-text-2);
  transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--c-accent); }
.breadcrumb .sep { color: var(--c-text-3); opacity: 0.6; }
.breadcrumb .current {
  color: var(--c-text);
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-hero-inner {
  max-width: 860px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: rgba(99,102,241,0.15);
  color: var(--c-accent);
  border: 1px solid rgba(99,102,241,0.30);
  box-shadow: 0 0 16px rgba(99,102,241,0.12);
  margin-bottom: 22px;
}
.article-hero-inner h1 {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.3;
  font-weight: 800;
  color: #fff;
  margin-bottom: 24px;
  letter-spacing: 0.01em;
}
.hero-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--c-text-2);
  font-size: 0.88rem;
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.hero-meta i { color: var(--c-accent); }

/* ===== 文章主体 ===== */
.article-main-section {
  padding: var(--space-section) 0;
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 44px;
  align-items: start;
}
.article-content-wrap {
  min-width: 0;
}
.article-body {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  padding: 44px 48px;
  box-shadow: var(--shadow);
  font-size: 1.04rem;
  line-height: 1.85;
  color: #d4dbe8;
}
.article-body p {
  margin-bottom: 1.25rem;
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin: 2.2rem 0 1.1rem;
  padding-left: 16px;
  border-left: 3px solid var(--c-primary);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 1.22rem;
  font-weight: 700;
  color: #f0f2ff;
  margin: 1.8rem 0 0.9rem;
}
.article-body ul {
  margin: 0 0 1.25rem;
  padding-left: 0;
}
.article-body ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
}
.article-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-neon);
  box-shadow: 0 0 8px rgba(99,102,241,0.5);
}
.article-body blockquote {
  margin: 1.5rem 0;
  padding: 18px 24px;
  border-radius: 12px;
  background: rgba(99,102,241,0.08);
  border-left: 3px solid var(--c-primary);
  color: var(--c-text-2);
}
.article-body img {
  border-radius: 14px;
  margin: 1.6rem 0;
  box-shadow: var(--shadow);
}
.article-body a {
  color: var(--c-accent);
  border-bottom: 1px solid rgba(34,211,238,0.3);
  transition: border-color 0.2s, color 0.2s;
}
.article-body a:hover {
  color: #fff;
  border-bottom-color: #fff;
}

/* 未找到 */
.not-found {
  text-align: center;
  padding: 70px 30px;
}
.not-found i {
  font-size: 3.4rem;
  color: var(--c-primary);
  margin-bottom: 20px;
  display: inline-block;
}
.not-found h2 {
  font-size: 1.8rem;
  color: #fff;
  margin-bottom: 12px;
  border: none;
  padding: 0;
}
.not-found p {
  color: var(--c-text-2);
  margin-bottom: 28px;
}

/* 文章底部信息 */
.article-footer-meta {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 16px;
  padding: 18px 24px;
}
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  display: inline-block;
  padding: 5px 13px;
  border-radius: 20px;
  font-size: 0.8rem;
  background: rgba(99,102,241,0.10);
  color: var(--c-text-2);
  border: 1px solid rgba(99,102,241,0.22);
}
.article-share {
  display: flex;
  align-items: center;
  gap: 10px;
}
.article-share span {
  font-size: 0.85rem;
  color: var(--c-text-3);
}
.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--c-text-2);
  font-size: 0.85rem;
  transition: all 0.25s;
}
.share-btn:hover {
  background: rgba(99,102,241,0.15);
  border-color: var(--c-primary);
  color: var(--c-accent);
  transform: translateY(-2px);
}

/* ===== 侧边栏 ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 96px;
}
.sidebar-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 18px;
  padding: 26px;
  box-shadow: var(--shadow);
  transition: border-color 0.3s;
}
.sidebar-card:hover {
  border-color: rgba(99,102,241,0.30);
}
.sidebar-card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-card h3 i {
  color: var(--c-accent);
  font-size: 0.95rem;
}
.about-card p {
  font-size: 0.9rem;
  color: var(--c-text-2);
  margin-bottom: 18px;
  line-height: 1.7;
}
.category-card ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.category-card ul a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 0.9rem;
  color: var(--c-text-2);
  transition: all 0.25s;
}
.category-card ul a:hover {
  background: rgba(99,102,241,0.10);
  color: #fff;
  transform: translateX(4px);
}
.category-card ul a i {
  font-size: 0.7rem;
  color: var(--c-primary);
}
.recommend-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.recommend-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px;
  border-radius: 12px;
  transition: all 0.25s;
  border: 1px solid transparent;
}
.recommend-item:hover {
  background: rgba(255,255,255,0.03);
  border-color: rgba(99,102,241,0.25);
  transform: translateX(4px);
}
.recommend-item img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: 10px;
  flex-shrink: 0;
}
.recommend-item span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.recommend-item span i {
  font-size: 0.8rem;
  color: var(--c-text-3);
}

/* ===== 探索更多 ===== */
.explore-section {
  padding: var(--space-section) 0;
  border-top: 1px solid rgba(255,255,255,0.05);
  background: rgba(13,18,32,0.6);
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.subtitle {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--c-accent);
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 4px 16px;
  border-radius: 20px;
  background: rgba(34,211,238,0.08);
  border: 1px solid rgba(34,211,238,0.18);
}
.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}
.section-head p {
  color: var(--c-text-2);
  font-size: 0.98rem;
}
.explore-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.explore-card {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow);
  transition: all 0.35s ease;
  aspect-ratio: 4 / 5;
}
.explore-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(99,102,241,0.4);
}
.explore-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}
.explore-card:hover img {
  transform: scale(1.05);
}
.explore-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,14,23,0.88) 20%, rgba(11,14,23,0.1) 70%);
}
.explore-content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 24px;
  z-index: 2;
}
.explore-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--c-accent);
  background: rgba(11,14,23,0.6);
  border: 1px solid rgba(34,211,238,0.25);
  margin-bottom: 12px;
}
.explore-content h3 {
  font-size: 1.18rem;
  color: #fff;
  font-weight: 700;
  margin-bottom: 6px;
}
.explore-content p {
  font-size: 0.87rem;
  color: var(--c-text-2);
  margin-bottom: 14px;
}
.explore-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-accent);
  transition: gap 0.25s;
}
.explore-card:hover .explore-link {
  gap: 12px;
}

/* ===== CTA ===== */
.cta-section {
  padding: var(--space-section) 0;
  border-top: 1px solid rgba(255,255,255,0.05);
  background: radial-gradient(ellipse at center, rgba(99,102,241,0.12) 0%, rgba(11,14,23,0) 70%);
}
.cta-card {
  text-align: center;
  background: linear-gradient(135deg, rgba(99,102,241,0.14), rgba(168,85,247,0.07));
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 24px;
  padding: 60px 40px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 400px; height: 2px;
  background: var(--gradient-neon);
  opacity: 0.8;
}
.cta-card h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: #fff;
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-card p {
  color: var(--c-text-2);
  font-size: 1rem;
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-card .btn {
  font-size: 1rem;
  padding: 14px 34px;
}

/* ===== FAQ ===== */
.faq-section {
  padding: var(--space-section) 0;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.faq-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 840px;
  margin: 0 auto;
}
.faq-item {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 16px;
  padding: 24px 28px;
  transition: all 0.3s;
}
.faq-item:hover {
  border-color: rgba(99,102,241,0.35);
  box-shadow: var(--shadow);
}
.faq-item h3 {
  font-size: 1.05rem;
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.faq-item h3 i {
  color: var(--c-accent);
  font-size: 0.9rem;
}
.faq-item p {
  color: var(--c-text-2);
  font-size: 0.92rem;
  line-height: 1.7;
  padding-left: 26px;
}

/* ===== Footer ===== */
.site-footer {
  background: #080a12;
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 44px;
}
.footer-brand .logo {
  margin-bottom: 18px;
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--c-text-3);
  line-height: 1.7;
  max-width: 340px;
}
.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--c-text-3);
  font-size: 0.88rem;
  transition: all 0.2s;
}
.footer-col ul a:hover {
  color: var(--c-accent);
  transform: translateX(4px);
}
.footer-col ul a i {
  font-size: 0.6rem;
  color: var(--c-primary);
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text-3);
  font-size: 0.88rem;
}
.footer-contact li i {
  color: var(--c-primary);
  font-size: 0.85rem;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 20px;
  }
  .sidebar-card {
    flex: 1;
    min-width: 240px;
  }
  .article-body {
    padding: 34px 32px;
  }
  .explore-grid {
    gap: 20px;
  }
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 56px;
  }
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(11,14,23,0.98);
    border-bottom: 1px solid var(--c-border);
    border-top: 1px solid rgba(255,255,255,0.04);
    padding: 16px 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    display: none;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-menu a {
    padding: 12px 16px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-cta .btn {
    display: none;
  }
  .article-hero {
    padding: 70px 0 54px;
  }
  .article-body {
    padding: 26px 20px;
    font-size: 1rem;
  }
  .article-body h2 {
    font-size: 1.32rem;
  }
  .explore-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }
  .explore-card {
    aspect-ratio: 16 / 10;
  }
  .article-footer-meta {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-card {
    padding: 44px 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-brand {
    grid-column: auto;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo-text {
    font-size: 0.98rem;
  }
  .nav-wrap {
    height: 64px;
  }
  .nav-menu {
    top: 64px;
    max-height: calc(100vh - 64px);
  }
  .article-hero {
    padding: 54px 0 40px;
  }
  .breadcrumb {
    margin-bottom: 28px;
    font-size: 0.8rem;
  }
  .hero-meta {
    gap: 12px;
    font-size: 0.82rem;
  }
  .article-body {
    padding: 22px 16px;
    border-radius: 14px;
  }
  .article-content-wrap {
    margin: 0 -4px;
  }
  .sidebar-card {
    padding: 20px;
    min-width: 100%;
  }
  .article-sidebar {
    flex-direction: column;
  }
  .faq-item {
    padding: 18px 16px;
  }
  .faq-item h3 {
    font-size: 0.96rem;
  }
  .cta-section {
    padding: 48px 0;
  }
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root {
  --c-primary: #5d4bff;
  --c-primary-2: #7c5cff;
  --c-accent: #f0b429;
  --c-accent-2: #ff6b9d;
  --c-bg: #0b0d14;
  --c-bg-2: #141827;
  --c-bg-3: #1c2134;
  --c-text: #f5f6fa;
  --c-text-2: #a8b2d1;
  --c-text-3: #6b7591;
  --c-border: rgba(139, 148, 190, 0.2);
  --c-border-2: rgba(93, 75, 255, 0.4);
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-full: 999px;
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.25);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 50px rgba(0,0,0,0.45);
  --shadow-glow: 0 0 30px rgba(93,75,255,0.25);
  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 40px;
  --sp-5: 64px;
  --sp-6: 96px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
}

/* ============ Reset / Base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
ul, ol { list-style: none; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 28px;
  border-radius: var(--r-full);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  line-height: 1.4;
  white-space: nowrap;
}
.btn i { font-size: 0.9em; }
.btn-primary {
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
  color: #fff;
  box-shadow: 0 4px 20px rgba(93,75,255,0.35);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(93,75,255,0.5);
}
.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-border);
}
.btn-ghost:hover {
  border-color: var(--c-primary-2);
  color: var(--c-primary-2);
  transform: translateY(-3px);
}
.btn-accent {
  background: linear-gradient(135deg, var(--c-accent), #ff8a3c);
  color: #1a1205;
  box-shadow: 0 4px 20px rgba(240,180,41,0.3);
}
.btn-accent:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(240,180,41,0.45);
}
.btn:focus-visible {
  outline: 3px solid rgba(93,75,255,0.5);
  outline-offset: 2px;
}

/* ============ 标签 ============ */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--r-full);
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(93,75,255,0.14);
  color: var(--c-primary-2);
  border: 1px solid rgba(93,75,255,0.25);
  letter-spacing: 0.02em;
}
.tag-accent {
  background: rgba(240,180,41,0.12);
  color: var(--c-accent);
  border-color: rgba(240,180,41,0.25);
}
.tag-green {
  background: rgba(46, 213, 115, 0.12);
  color: #2ed573;
  border-color: rgba(46, 213, 115, 0.25);
}

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 13, 20, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--c-border);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 4px 18px rgba(93,75,255,0.4);
}
.logo-text {
  background: linear-gradient(90deg, #fff, #cfd6ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-menu a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--r-full);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--c-text-2);
  transition: all 0.3s ease;
  position: relative;
}
.nav-menu a i {
  font-size: 0.85em;
  opacity: 0.8;
}
.nav-menu a:hover {
  color: var(--c-text);
  background: rgba(93,75,255,0.1);
}
.nav-menu a.active {
  color: var(--c-accent);
  background: rgba(240,180,41,0.1);
  box-shadow: inset 0 0 0 1px rgba(240,180,41,0.2);
}
.nav-menu a.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 3px;
  border-radius: var(--r-full);
  background: var(--c-accent);
  box-shadow: 0 0 12px rgba(240,180,41,0.6);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-cta .btn {
  padding: 10px 22px;
  font-size: 0.88rem;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-size: 1rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}
.nav-toggle:hover { border-color: var(--c-primary-2); color: var(--c-primary-2); }

/* ============ 内页 Banner ============ */
.page-hero {
  position: relative;
  padding: 110px 0 90px;
  background: linear-gradient(135deg, rgba(11,13,20,0.92), rgba(12,16,30,0.78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid var(--c-border);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(93,75,255,0.28), transparent 70%);
  pointer-events: none;
}
.page-hero::after {
  content: "";
  position: absolute;
  bottom: -40px;
  left: 20%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240,180,41,0.18), transparent 70%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}
.page-hero .tag {
  margin-bottom: 18px;
}
.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.3rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.page-hero h1 .highlight {
  background: linear-gradient(90deg, var(--c-accent), #ff8a3c);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-hero p {
  font-size: 1.08rem;
  color: var(--c-text-2);
  max-width: 640px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============ 面包屑 ============ */
.breadcrumb {
  padding: 20px 0;
  border-bottom: 1px solid var(--c-border);
  background: var(--c-bg-2);
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--c-text-3);
}
.breadcrumb a { color: var(--c-text-2); transition: color 0.3s; }
.breadcrumb a:hover { color: var(--c-accent); }
.breadcrumb i { font-size: 0.75rem; }

/* ============ 通用板块 ============ */
.section {
  padding: var(--sp-5) 0;
  position: relative;
}
.section-alt { background: var(--c-bg-2); }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--sp-5);
}
.section-head .tag { margin-bottom: 14px; }
.section-head h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  line-height: 1.3;
}
.section-head p {
  color: var(--c-text-2);
  font-size: 1rem;
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

/* ============ 新手三步卡片 ============ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.step-card {
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 36px 30px;
  position: relative;
  transition: all 0.35s ease;
  overflow: hidden;
}
.step-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  opacity: 0.5;
  transition: opacity 0.3s;
}
.step-card:hover {
  border-color: var(--c-border-2);
  transform: translateY(-6px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.step-card:hover::before { opacity: 1; }
.step-num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.1em;
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--r-full);
  background: rgba(240,180,41,0.1);
  border: 1px solid rgba(240,180,41,0.2);
  margin-bottom: 18px;
}
.step-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.step-card p {
  color: var(--c-text-2);
  font-size: 0.92rem;
  margin-bottom: 16px;
}
.step-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-primary-2);
  transition: color 0.3s;
}
.step-link:hover { color: var(--c-accent); }
.step-link i { font-size: 0.8rem; transition: transform 0.3s; }
.step-link:hover i { transform: translateX(4px); }

/* ============ 安全验证 ============ */
.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.security-media {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--c-border);
}
.security-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.security-media:hover img { transform: scale(1.03); }
.security-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.security-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.security-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(93,75,255,0.14);
  border: 1px solid rgba(93,75,255,0.25);
  color: var(--c-primary-2);
  font-size: 1.1rem;
}
.security-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 5px;
}
.security-item p {
  font-size: 0.9rem;
  color: var(--c-text-2);
}

/* ============ 流程路径 ============ */
.path-section {
  background: linear-gradient(135deg, rgba(11,13,20,0.95), rgba(20,24,39,0.92)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.path-track {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}
.path-track::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 30px;
  bottom: 30px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-primary), var(--c-accent), transparent);
  opacity: 0.4;
}
.path-node {
  display: flex;
  gap: 28px;
  padding: 0 0 36px;
  position: relative;
}
.path-marker {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--c-bg-3);
  border: 1px solid var(--c-border-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent);
  font-size: 1.2rem;
  z-index: 2;
  box-shadow: 0 0 22px rgba(93,75,255,0.2);
}
.path-content {
  padding-top: 4px;
}
.path-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.path-content p {
  color: var(--c-text-2);
  font-size: 0.93rem;
  margin-bottom: 8px;
}
.path-tips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

/* ============ 权益卡片 ============ */
.member-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.member-card {
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 34px 28px;
  transition: all 0.35s ease;
  text-align: center;
}
.member-card:hover {
  transform: translateY(-6px);
  border-color: var(--c-border-2);
  box-shadow: var(--shadow-md);
}
.member-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 20px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: rgba(93,75,255,0.12);
  border: 1px solid rgba(93,75,255,0.2);
  color: var(--c-primary-2);
}
.member-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.member-level {
  color: var(--c-accent);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 14px;
  display: block;
}
.member-card p {
  color: var(--c-text-2);
  font-size: 0.92rem;
  margin-bottom: 18px;
}
.member-features {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.member-features li {
  display: flex;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--c-text-2);
}
.member-features li i {
  color: var(--c-accent);
  font-size: 0.85em;
  margin-top: 3px;
}

/* ============ FAQ ============ */
.faq-grid {
  max-width: 850px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}
.faq-item {
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-item:hover { border-color: var(--c-border-2); }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.98rem;
  transition: all 0.3s;
}
.faq-q:hover { color: var(--c-accent); }
.faq-q i {
  color: var(--c-accent);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item.open .faq-q i { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-a-inner {
  padding: 0 24px 22px;
  color: var(--c-text-2);
  font-size: 0.93rem;
  line-height: 1.8;
}

/* ============ CTA 区 ============ */
.cta-section {
  padding: var(--sp-5) 0;
  position: relative;
  overflow: hidden;
}
.cta-box {
  position: relative;
  background: linear-gradient(135deg, rgba(93,75,255,0.2), rgba(240,180,41,0.12));
  border: 1px solid var(--c-border-2);
  border-radius: var(--r-lg);
  padding: 55px 45px;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(93,75,255,0.3), transparent 70%);
  pointer-events: none;
}
.cta-box h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-box p {
  color: var(--c-text-2);
  margin-bottom: 28px;
  font-size: 1rem;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.cta-badges span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--c-text-2);
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--c-bg-2);
  border-top: 1px solid var(--c-border);
  padding-top: 56px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 0.9fr 1.1fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  color: var(--c-text-2);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--c-text);
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  border-radius: var(--r-full);
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--c-text-2);
  font-size: 0.9rem;
  transition: all 0.3s;
}
.footer-col ul a i { font-size: 0.7rem; color: var(--c-primary-2); }
.footer-col ul a:hover { color: var(--c-accent); transform: translateX(4px); }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text-2);
  font-size: 0.9rem;
}
.footer-contact li i { color: var(--c-accent); width: 18px; text-align: center; }
.site-footer > .container:last-child {}
.site-footer .footer-bottom {
  border-top: 1px solid var(--c-border);
  padding: 22px 0;
}
.footer-bottom .container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.84rem;
  color: var(--c-text-3);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .nav-menu { position: fixed; top: 74px; left: 0; right: 0; background: var(--c-bg-2); flex-direction: column; align-items: stretch; padding: 20px var(--sp-3) 24px; gap: 4px; border-bottom: 1px solid var(--c-border); transform: translateY(-120%); opacity: 0; visibility: hidden; transition: all 0.35s ease; z-index: 99; }
  .nav-menu.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-menu a { padding: 14px 18px; justify-content: center; font-size: 1rem; }
  .nav-menu a.active::after { display: none; }
  .nav-toggle { display: inline-flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .security-grid { grid-template-columns: 1fr; }
  .security-media img { height: 260px; }
}
@media (max-width: 768px) {
  .page-hero { padding: 80px 0 60px; }
  .steps-grid { grid-template-columns: 1fr; }
  .member-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .section { padding: var(--sp-4) 0; }
  .cta-box { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .path-node { gap: 18px; }
  .path-marker { width: 48px; height: 48px; font-size: 1rem; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .nav-wrap { height: 66px; }
  .logo-text { font-size: 1rem; }
  .nav-cta .btn { padding: 9px 16px; font-size: 0.82rem; }
  .page-hero h1 { font-size: 1.7rem; }
  .section-head h2 { font-size: 1.5rem; }
  .path-content h3 { font-size: 1rem; }
  .path-content p { font-size: 0.85rem; }
  .breadcrumb { font-size: 0.78rem; }
  .footer-brand p { font-size: 0.88rem; }
}

/* roulang page: category3 */
:root {
  --primary: #00d4ff;
  --primary-dim: rgba(0, 212, 255, .12);
  --secondary: #8b5cf6;
  --gold: #f5b94a;
  --bg: #070b14;
  --bg-2: #0b1220;
  --bg-3: #101a2e;
  --card: #101b30;
  --border: rgba(0, 212, 255, .14);
  --border-2: rgba(255, 255, 255, .06);
  --text: #e8eef7;
  --text-2: #a6b3c7;
  --text-3: #64758f;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 50px rgba(3, 8, 18, .55);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --transition: all .3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

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

input:focus, a:focus, button:focus {
  outline: 2px solid rgba(0, 212, 255, .5);
  outline-offset: 3px;
}

h1, h2, h3, h4 {
  line-height: 1.3;
  font-weight: 800;
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 11, 22, .92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.14rem;
  font-weight: 800;
  letter-spacing: .4px;
  color: #fff;
  white-space: nowrap;
}

.logo-icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #03121a;
  font-size: 1.2rem;
  box-shadow: 0 0 18px rgba(0, 212, 255, .35);
}

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

.nav-menu a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 16px;
  border-radius: 10px;
  color: var(--text-2);
  font-weight: 500;
  font-size: .94rem;
}

.nav-menu a i {
  font-size: .88rem;
  opacity: .85;
}

.nav-menu a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .06);
}

.nav-menu a.active {
  color: #04141f;
  background: linear-gradient(135deg, rgba(0, 212, 255, .9), rgba(139, 92, 246, .88));
  box-shadow: 0 0 20px rgba(0, 212, 255, .35);
  font-weight: 700;
}

.nav-menu a.active i {
  opacity: 1;
}

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

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, .06);
  border-radius: 10px;
  color: #fff;
  font-size: 1.1rem;
  border: 1px solid var(--border-2);
}

.nav-toggle.on {
  background: rgba(0, 212, 255, .15);
  color: var(--primary);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: .95rem;
  line-height: 1;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #04141f;
  box-shadow: 0 6px 22px rgba(0, 212, 255, .25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 212, 255, .4);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-2);
}

.btn-outline:hover {
  color: #fff;
  border-color: rgba(0, 212, 255, .5);
  background: rgba(0, 212, 255, .08);
}

.btn-light {
  background: rgba(255, 255, 255, .92);
  color: #0a1424;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .22);
}

.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 34px rgba(0, 0, 0, .28);
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 92px 0 76px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.page-banner-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: .34;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(4, 9, 18, .94) 20%, rgba(8, 15, 30, .78) 62%, rgba(8, 15, 30, .58));
}

.page-banner::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, .75), transparent);
}

.banner-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-dim);
  border: 1px solid rgba(0, 212, 255, .25);
  color: var(--primary);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .6px;
  margin-bottom: 20px;
}

.banner-tag i {
  font-size: .9rem;
}

.page-banner h1 {
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.page-banner h1 span {
  color: var(--primary);
}

.page-banner .lead {
  color: var(--text-2);
  font-size: 1.05rem;
  max-width: 640px;
  margin-bottom: 30px;
}

.banner-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 100px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--border-2);
  color: var(--text-2);
  font-size: .82rem;
  font-weight: 500;
}

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

/* ===== Section ===== */
.section {
  padding: 76px 0;
}

.section-head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 46px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: 1.6px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-head h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 10px;
}

.section-head p {
  color: var(--text-2);
  font-size: .95rem;
}

/* ===== Cat Filter ===== */
.cat-filter {
  position: relative;
  z-index: 6;
  margin-top: -24px;
}

.cat-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.cat-tab {
  padding: 9px 18px;
  border-radius: 100px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid transparent;
  color: var(--text-2);
  font-size: .88rem;
  font-weight: 500;
  transition: var(--transition);
  cursor: default;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cat-tab i {
  font-size: .8rem;
  opacity: .8;
}

.cat-tab.active {
  background: linear-gradient(135deg, rgba(0, 212, 255, .16), rgba(139, 92, 246, .16));
  color: var(--primary);
  border-color: rgba(0, 212, 255, .3);
  font-weight: 600;
}

/* ===== Activity Cards ===== */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.activity-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.activity-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, .35);
  box-shadow: var(--shadow);
}

.card-cover {
  position: relative;
  height: 182px;
  overflow: hidden;
  flex-shrink: 0;
}

.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .55s ease;
}

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

.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(3, 11, 20, .78);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .15);
  color: #fff;
  padding: 5px 13px;
  border-radius: 100px;
  font-size: .78rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.card-tag i {
  font-size: .7rem;
  color: var(--primary);
}

.card-body {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.card-desc {
  color: var(--text-2);
  font-size: .9rem;
  line-height: 1.75;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, .06);
  padding-top: 14px;
}

.card-date {
  color: var(--text-3);
  font-size: .82rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-status {
  color: var(--gold);
  font-size: .82rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.card-status i {
  font-size: .7rem;
}

.card-status.soon {
  color: var(--text-3);
}

/* ===== Rank Section ===== */
.rank-section {
  background: var(--bg-2);
  border-top: 1px solid var(--border-2);
  border-bottom: 1px solid var(--border-2);
}

.rank-wrap {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 44px;
  align-items: center;
}

.rank-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  transition: var(--transition);
}

.rank-item:hover {
  transform: translateX(6px);
  border-color: rgba(0, 212, 255, .35);
}

.rank-num {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  background: rgba(255, 255, 255, .06);
  color: var(--text-2);
}

.rank-item:nth-child(1) .rank-num {
  background: linear-gradient(135deg, #f5b94a, #f29e1f);
  color: #241a05;
  box-shadow: 0 0 18px rgba(245, 185, 74, .3);
}

.rank-item:nth-child(2) .rank-num {
  background: linear-gradient(135deg, #cbd5e1, #94a3b8);
  color: #1a2027;
}

.rank-item:nth-child(3) .rank-num {
  background: linear-gradient(135deg, #cf8357, #b5634a);
  color: #241105;
}

.rank-info {
  flex: 1;
  min-width: 0;
}

.rank-info h4 {
  font-size: 1rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rank-info p {
  color: var(--text-3);
  font-size: .82rem;
  margin-top: 3px;
}

.rank-heat {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--gold);
  font-size: .85rem;
  font-weight: 700;
  white-space: nowrap;
}

.heat-bar {
  width: 80px;
  height: 6px;
  border-radius: 100px;
  background: rgba(255, 255, 255, .08);
  overflow: hidden;
}

.heat-bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--primary));
  border-radius: 100px;
}

.rank-visual {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow);
}

.rank-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.rank-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 10, 20, .2), rgba(5, 10, 20, .88) 82%);
  z-index: 1;
}

.rank-visual-content {
  position: relative;
  z-index: 2;
  padding: 32px;
  color: #fff;
}

.rank-visual-content .mini {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 212, 255, .16);
  border: 1px solid rgba(0, 212, 255, .3);
  border-radius: 100px;
  color: var(--primary);
  font-size: .8rem;
  font-weight: 700;
  padding: 5px 14px;
  margin-bottom: 14px;
}

.rank-visual-content h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.rank-visual-content p {
  color: var(--text-2);
  font-size: .9rem;
  line-height: 1.7;
}

/* ===== Process ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  text-align: center;
  padding: 30px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  position: relative;
  transition: var(--transition);
}

.process-step:hover {
  border-color: rgba(0, 212, 255, .4);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.process-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(0, 212, 255, .15), rgba(139, 92, 246, .15));
  border: 1px solid rgba(0, 212, 255, .35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.3rem;
  box-shadow: 0 0 20px rgba(0, 212, 255, .08);
}

.process-step h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.process-step p {
  color: var(--text-2);
  font-size: .85rem;
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-2);
  border-top: 1px solid var(--border-2);
  border-bottom: 1px solid var(--border-2);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: rgba(0, 212, 255, .4);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: .98rem;
  border: none;
  background: transparent;
  color: var(--text);
  text-align: left;
  width: 100%;
}

.faq-q i {
  color: var(--primary);
  transition: transform .35s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-q i {
  transform: rotate(180deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.faq-a-inner {
  padding: 0 22px 20px;
  color: var(--text-2);
  font-size: .9rem;
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
}

.cta-box {
  position: relative;
  border-radius: 24px;
  padding: 64px 40px;
  text-align: center;
  overflow: hidden;
  border: 1px solid var(--border);
  background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(4, 10, 20, .84);
}

.cta-box::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.cta-box > * {
  position: relative;
  z-index: 2;
}

.cta-box h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-box p {
  color: var(--text-2);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto 28px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* ===== Footer ===== */
.site-footer {
  background: #050910;
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}

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

.footer-brand .logo {
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--text-3);
  font-size: .88rem;
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h4 {
  font-size: .98rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: #fff;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col li a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-2);
  font-size: .88rem;
}

.footer-col li a i {
  font-size: .7rem;
  color: var(--primary);
  transition: var(--transition);
}

.footer-col li a:hover {
  color: var(--primary);
}

.footer-col li a:hover i {
  transform: translateX(3px);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text-2);
  font-size: .88rem;
}

.footer-contact li i {
  color: var(--primary);
  margin-top: 3px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  text-align: center;
  font-size: .8rem;
  color: var(--text-3);
}

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

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

  .rank-wrap {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 900px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(6, 11, 22, .98);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 18px;
    gap: 8px;
    transform: translateY(-130%);
    transition: transform .35s ease;
    box-shadow: 0 24px 48px rgba(0, 0, 0, .5);
    align-items: stretch;
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .nav-menu a {
    width: 100%;
    padding: 14px 16px;
  }

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

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

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .page-banner {
    padding: 64px 0 58px;
  }

  .page-banner h1 {
    font-size: 1.9rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .cta-box {
    padding: 44px 20px;
  }

  .activity-grid {
    gap: 16px;
  }
}

@media (max-width: 520px) {
  .activity-grid {
    grid-template-columns: 1fr;
  }

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

  .cat-filter-list {
    padding: 12px;
    gap: 8px;
  }

  .cat-tab {
    padding: 7px 12px;
    font-size: .8rem;
  }

  .footer-bottom span {
    display: block;
    padding: 0 12px;
  }

  .btn {
    padding: 11px 18px;
    font-size: .9rem;
  }

  .banner-badges {
    gap: 8px;
  }
}