/* roulang page: index */
:root {
  --primary: #123F2E;
  --primary-deep: #0A2B1E;
  --accent: #C5A05C;
  --accent-light: #D9BC7A;
  --bg: #F7F6F2;
  --surface: #FFFFFF;
  --dark: #13201B;
  --text: #1E2420;
  --text-secondary: #5B6760;
  --border: #E4E6E1;
  --radius-card: 8px;
  --radius-btn: 4px;
  --shadow-card: 0 1px 2px -1px rgba(0,0,0,0.06), 0 8px 24px -4px rgba(0,0,0,0.06);
  --shadow-hover: 0 12px 32px -4px rgba(0,0,0,0.12);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
}
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.text-center { text-align: center; }
.grid-demo { margin-bottom: 0; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--primary-deep);
  height: 36px;
  display: flex;
  align-items: center;
  font-size: 12px;
  color: #CDD6D1;
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.topbar-domain { font-weight: 700; letter-spacing: 0.02em; }
.topbar-desc { margin-left: 12px; color: #9DB4A8; }
.topbar-actions { display: flex; gap: 16px; }
.topbar-actions a { color: #CDD6D1; font-weight: 500; }
.topbar-actions a:hover { color: #fff; }
.topbar-sep { width: 1px; height: 10px; background: rgba(255,255,255,0.2); }
@media (max-width: 768px) {
  .topbar-desc { display: none; }
  .topbar-actions { gap: 12px; }
}

/* ---------- 主导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  height: 72px;
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.logo-mark {
  width: 30px;
  height: 30px;
  border: 3px solid var(--primary);
  border-radius: 6px;
  position: relative;
  display: inline-block;
  flex-shrink: 0;
}
.logo-mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
  transform: translate(-50%, -50%) rotate(45deg);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.main-nav a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  padding: 0 2px 22px;
  position: relative;
  line-height: 72px;
  white-space: nowrap;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 18px;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.2s ease;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { width: 100%; }
.main-nav a.active { color: var(--primary); }
.main-nav a.active::after { width: 100%; }
.nav-cta {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 26px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
}
.nav-cta:hover {
  background: var(--primary-deep);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(18,63,46,0.25);
  color: #fff;
}
.hamburger {
  display: none;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 4px;
  align-items: center;
  justify-content: center;
}
.hamburger i { color: var(--primary); font-size: 18px; }
@media (max-width: 992px) {
  .main-nav { display: none; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }
}
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 40;
  background: var(--primary-deep);
  padding: 80px 32px 32px;
  flex-direction: column;
  gap: 24px;
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  color: #e8efe9;
  font-size: 28px;
  font-weight: 700;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.mobile-menu a:hover { color: var(--accent-light); }
.mobile-menu .btn-accent { margin-top: 16px; font-size: 18px; text-align: center; }
.mobile-menu-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  font-size: 20px;
  border-radius: 4px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 600;
  border: none;
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
  line-height: 1;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-deep); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(18,63,46,0.2); color: #fff; }
.btn-accent {
  background: var(--accent);
  color: var(--primary-deep);
}
.btn-accent:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(197,160,92,0.3); color: var(--primary-deep); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.6);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); transform: translateY(-1px); }
.btn-outline-dark {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline-dark:hover { background: rgba(18,63,46,0.08); transform: translateY(-1px); }
.btn-lg { height: 56px; padding: 0 40px; font-size: 17px; }
.btn-block { width: 100%; }
@media (max-width: 520px) {
  .btn-lg { width: 100%; padding: 0 20px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  width: 100%;
  min-height: 72vh;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(10,43,30,0.88) 0%, rgba(10,43,30,0.65) 46%, rgba(10,43,30,0.25) 100%);
}
.hero-container {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  color: #fff;
}
@media (max-width: 640px) {
  .hero-container { padding: 0 16px; }
}
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(197,160,92,0.6);
  color: var(--accent-light);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
  animation: fadeUp 0.6s ease both;
}
.hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  animation: fadeUp 0.6s ease 0.1s both;
}
.hero-subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  margin-bottom: 36px;
  animation: fadeUp 0.6s ease 0.2s both;
}
.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeUp 0.6s ease 0.3s both;
}
@media (max-width: 640px) {
  .hero { min-height: 86vh; }
  .hero h1 { font-size: 36px; }
  .hero-subtitle { font-size: 16px; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; }
}
.scroll-indicator {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 12px;
  z-index: 3;
}
.scroll-indicator::after {
  content: "";
  position: absolute;
  top: 6px;
  left: 50%;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  background: var(--accent-light);
  border-radius: 2px;
  animation: scrollLine 1.6s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(16px); opacity: 0; }
}
@keyframes fadeUp {
  0% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 1; transform: translateY(0); }
}
.hero-bg-zoom {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  animation: heroZoom 10s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  0% { transform: scale(1.03); }
  100% { transform: scale(1.06); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-bg-zoom, .scroll-indicator::after, .hero-badge, .hero h1, .hero-subtitle, .hero-ctas { animation: none; }
  body, a, button, .progress-fill { transition: none !important; }
  .progress-fill { transition: none !important; }
}

/* ---------- 品牌数据条 ---------- */
.stats-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item {
  text-align: center;
  padding: 8px 0;
}
.stat-num {
  font-size: 38px;
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
}
.stat-divider { width: 1px; height: 48px; background: var(--border); align-self: center; }
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat-num { font-size: 32px; }
}

/* ---------- 板块通用 ---------- */
.section-head {
  margin-bottom: 56px;
}
.section-head .tag-line {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding: 4px 12px;
  border: 1px solid rgba(197,160,92,0.5);
  border-radius: 999px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 14px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.7;
}
.section-head.center { text-align: center; }
.section-head.center p { margin-left: auto; margin-right: auto; }
@media (max-width: 768px) {
  .section-head h2 { font-size: 26px; }
  .section { padding: 64px 0; }
}

/* ---------- 玩法介绍 ---------- */
.how-section {
  background: var(--bg);
  padding: 112px 0;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
.step-item {
  position: relative;
  padding: 24px 8px 0 0;
}
.step-num {
  font-size: 140px;
  font-weight: 800;
  line-height: 0.9;
  color: rgba(197,160,92,0.18);
  font-variant-numeric: tabular-nums;
  margin-bottom: 20px;
  user-select: none;
}
.step-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}
.step-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.step-divider {
  width: 40px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 16px;
}
@media (max-width: 992px) {
  .steps-grid { grid-template-columns: 1fr; gap: 40px; }
  .step-num { font-size: 100px; }
}
@media (max-width: 640px) {
  .how-section { padding: 64px 0; }
  .step-num { font-size: 80px; }
}

/* ---------- 奖励预览 ---------- */
.rewards-section {
  background: var(--surface);
  padding: 112px 0;
}
.rewards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.reward-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 40px 32px;
  box-shadow: var(--shadow-card);
  text-align: center;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.reward-card:hover {
  border-color: var(--accent);
  box-shadow: 0 12px 32px -4px rgba(197,160,92,0.18), var(--shadow-hover);
  transform: translateY(-4px);
}
.reward-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  background: rgba(197,160,92,0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--accent);
}
.reward-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}
.reward-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
@media (max-width: 992px) {
  .rewards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .rewards-grid { grid-template-columns: 1fr; }
  .rewards-section { padding: 64px 0; }
}

/* ---------- 任务进度感 ---------- */
.task-section {
  background: var(--bg);
  padding: 112px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.task-left h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}
.task-left p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 440px;
}
.task-hint {
  display: inline-block;
  margin-top: 24px;
  background: rgba(18,63,46,0.08);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 999px;
}
.progress-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow-card);
}
.progress-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 16px;
}
.progress-head .label { font-size: 14px; color: var(--text-secondary); }
.progress-head .percent { font-size: 28px; font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; }
.progress-track {
  height: 8px;
  background: #E6E7E3;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 28px;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 999px;
  width: 68%;
  transition: width 1s ease-out;
}
.task-list { display: flex; flex-direction: column; gap: 4px; }
.task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
  padding: 0 8px;
  border-radius: 6px;
  transition: background 0.2s ease;
}
.task-item:hover { background: rgba(18,63,46,0.03); }
.task-left-side { display: flex; align-items: center; gap: 12px; }
.task-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}
.task-icon.done { background: var(--accent); color: #fff; }
.task-icon.active { border: 2px solid var(--accent); background: transparent; position: relative; }
.task-icon.active::after {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.task-name { font-size: 15px; font-weight: 500; color: var(--text); }
.task-status { font-size: 13px; font-weight: 600; color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.task-status.done { color: var(--primary); }
.task-status.active { color: var(--accent); }
@media (max-width: 992px) {
  .task-left { margin-bottom: 32px; }
}
@media (max-width: 640px) {
  .task-section { padding: 64px 0; }
  .task-left h2 { font-size: 26px; }
  .progress-wrap { padding: 24px; }
}

/* ---------- CTA 区块 ---------- */
.cta-section {
  background: var(--dark);
  padding: 112px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  opacity: 0.15;
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
}
.cta-inner p {
  font-size: 17px;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 36px;
}
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
@media (max-width: 640px) {
  .cta-section { padding: 64px 0; }
  .cta-inner h2 { font-size: 28px; }
  .cta-btns { flex-direction: column; }
  .cta-btns .btn { width: 100%; }
}

/* ---------- 最新资讯 ---------- */
.news-section { background: var(--surface); padding: 112px 0; }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.news-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.card-link { display: flex; flex-direction: column; height: 100%; }
.card-cover {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
  background: #e8e9e5;
}
.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .card-cover img { transform: scale(1.03); }
.card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.card-tag {
  display: inline-block;
  background: rgba(18,63,46,0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
  width: fit-content;
}
.card-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.read-more {
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease, color 0.2s ease;
}
.news-card:hover .read-more { gap: 8px; }
.empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-card);
  text-align: center;
}
.empty-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(18,63,46,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--primary);
  font-size: 22px;
}
.empty-state p { font-size: 15px; color: var(--text-secondary); }
@media (max-width: 992px) {
  .news-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .news-grid { grid-template-columns: 1fr; }
  .news-section { padding: 64px 0; }
}

/* ---------- FAQ 预览（首页不需要，但留样式） ---------- */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
}
.faq-q i { transition: transform 0.2s ease; color: var(--accent); }
.faq-item.is-active .faq-q i { transform: rotate(45deg); }
.faq-a {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 12px;
  display: none;
}
.faq-item.is-active .faq-a { display: block; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--primary-deep);
  color: #A6B0A9;
  font-size: 14px;
}
.footer-main {
  padding: 64px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
}
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo-mark { border-color: #fff; }
.footer-brand .logo-mark::after { background: var(--accent); }
.footer-brand p {
  line-height: 1.7;
  color: #A6B0A9;
  margin-bottom: 14px;
  max-width: 300px;
}
.footer-domain {
  font-size: 13px;
  color: #7C8B82;
  font-weight: 600;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  color: #A6B0A9;
  font-size: 14px;
  transition: color 0.2s ease;
}
.footer-col a:hover { color: #fff; }
.footer-contact { display: flex; flex-direction: column; gap: 12px; }
.footer-contact .contact-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #A6B0A9;
}
.footer-contact .contact-line i { color: var(--accent); width: 18px; text-align: center; }
.copyright-bar {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: #7C8B82;
}
.copyright-bar a { color: #A6B0A9; }
.copyright-bar a:hover { color: #fff; }
@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; text-align: left; }
  .footer-brand p { max-width: 100%; }
}

/* ---------- Foundation 覆盖 ---------- */
.grid-container { max-width: 1200px; }
.cell { margin-bottom: 0; }
.button { transition: all 0.2s ease; }

/* ---------- 通用辅助 ---------- */
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 40px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 40px; }
.text-secondary { color: var(--text-secondary); }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }

/* roulang page: category1 */
:root {
  --primary: #123F2E;
  --primary-deep: #0A2B1E;
  --accent: #C5A05C;
  --accent-light: #D9BC7A;
  --bg: #F7F6F2;
  --surface: #FFFFFF;
  --dark: #13201B;
  --text: #1E2420;
  --text-secondary: #5B6760;
  --border: #E4E6E1;
  --radius: 8px;
  --radius-btn: 4px;
  --shadow: 0 1px 2px -1px rgba(0,0,0,0.06), 0 8px 24px -4px rgba(0,0,0,0.06);
  --shadow-hover: 0 12px 32px -4px rgba(0,0,0,0.12);
  --container-max: 1200px;
  --space-section: 112px;
  --space-section-mobile: 64px;
  --transition: 0.2s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }
input, select, textarea { font-family: inherit; }
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.tabular-nums { font-variant-numeric: tabular-nums; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--primary-deep);
  color: #CDD6D1;
  font-size: 12px;
  height: 36px;
  display: flex;
  align-items: center;
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.topbar-domain { font-weight: 700; letter-spacing: 0.02em; }
.topbar-domain i { margin-right: 6px; color: var(--accent-light); }
.topbar-type { margin-left: 8px; opacity: 0.7; }
.topbar-actions { display: flex; gap: 20px; }
.topbar-actions a { color: #CDD6D1; transition: color var(--transition); }
.topbar-actions a:hover { color: #fff; }

/* ---------- 主导航 ---------- */
.main-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.main-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  white-space: nowrap;
}
.logo-mark {
  width: 10px;
  height: 28px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-light));
  border-radius: 4px;
  margin-right: 10px;
  display: inline-block;
  transform: skewX(-8deg);
}
.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  padding: 6px 0;
  position: relative;
  transition: color var(--transition);
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.2s;
}
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }
.main-nav a.active { color: var(--primary); }
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  border: none;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn-primary:hover { background: var(--primary-deep); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(10, 43, 30, 0.18); }
.btn-gold {
  background: var(--accent);
  color: var(--primary-deep);
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn-gold:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(197, 160, 92, 0.28); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: inherit;
  border: 1px solid rgba(255,255,255,0.5);
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn-outline:hover { background: rgba(255,255,255,0.1); transform: translateY(-1px); border-color: #fff; }
.btn-outline-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.btn-outline-primary:hover { background: rgba(18, 63, 46, 0.08); transform: translateY(-1px); }
.nav-cta { flex-shrink: 0; }
.hamburger {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.mobile-menu {
  display: none;
  background: var(--primary-deep);
  padding: 32px 24px 48px;
  position: fixed;
  top: 108px;
  left: 0;
  right: 0;
  z-index: 40;
  min-height: 100vh;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.mobile-menu a.active { color: var(--accent-light); }
.mobile-menu .btn-primary {
  margin-top: 28px;
  width: 100%;
}

/* ---------- Hero ---------- */
.page-hero {
  background:
    linear-gradient(120deg, rgba(10, 43, 30, 0.9) 20%, rgba(18, 63, 46, 0.55) 60%, rgba(10, 43, 30, 0.7)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 110px 0 120px;
  color: #fff;
  position: relative;
}
.page-hero .breadcrumb {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 32px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.breadcrumb a { color: rgba(255,255,255,0.8); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb .sep { opacity: 0.5; }
.page-hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  max-width: 680px;
}
.page-hero .hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  line-height: 1.8;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent-light);
  margin-bottom: 24px;
  text-transform: none;
}
.hero-badge i { font-size: 12px; }

/* ---------- 交替图文 ---------- */
.alternate-section { padding: var(--space-section) 0; }
.alternate-section .container { max-width: var(--container-max); }
.alternate-grid { display: flex; flex-wrap: wrap; align-items: center; gap: 48px; }
.alternate-grid + .alternate-grid { margin-top: 96px; }
.alternate-media {
  flex: 1 1 46%;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
  transition: box-shadow var(--transition);
}
.alternate-media:hover { box-shadow: var(--shadow-hover); }
.alternate-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.alternate-media:hover img { transform: scale(1.03); }
.alternate-content {
  flex: 1 1 46%;
}
.alternate-content .section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 16px;
  display: block;
}
.alternate-content h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 18px;
}
.alternate-content p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}
.alternate-content .feature-feints {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}
.feature-feint { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text); }
.feature-feint i { color: var(--accent); margin-top: 4px; font-size: 16px; }

/* ---------- 时间线 ---------- */
.timeline-section {
  background: var(--primary-deep);
  color: #fff;
  padding: 100px 0;
  position: relative;
}
.timeline-section .section-header { text-align: center; margin-bottom: 64px; }
.timeline-section .section-eyebrow {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 12px;
}
.timeline-section h2 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.25;
}
.timeline-section .section-sub {
  color: rgba(255,255,255,0.6);
  max-width: 600px;
  margin: 16px auto 0;
  font-size: 16px;
}
.timeline-wrap { max-width: 860px; margin: 0 auto; }
.timeline-item {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.timeline-item:last-child { border-bottom: none; }
.timeline-num {
  font-size: 44px;
  font-weight: 800;
  color: var(--accent);
  width: 80px;
  text-align: right;
  line-height: 1.1;
  opacity: 0.85;
  flex-shrink: 0;
}
.timeline-content h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; color: #fff; }
.timeline-content p { font-size: 15px; color: rgba(255,255,255,0.6); line-height: 1.7; }

/* ---------- 场景卡片 ---------- */
.scenes-section { padding: var(--space-section) 0; }
.section-header { margin-bottom: 48px; }
.section-header .section-eyebrow {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
}
.section-header .section-sub {
  color: var(--text-secondary);
  max-width: 560px;
  margin-top: 12px;
  font-size: 16px;
}
.scene-cards .grid-x { row-gap: 28px; }
.scene-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  height: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.scene-card:hover { border-color: var(--accent); box-shadow: var(--shadow-hover); }
.scene-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(18, 63, 46, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 22px;
  color: var(--primary);
}
.scene-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; color: var(--text); }
.scene-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ---------- CTA 条 ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  padding: 80px 0;
  color: #fff;
  text-align: center;
  position: relative;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.cta-band h2 { font-size: 34px; font-weight: 700; margin-bottom: 12px; }
.cta-band p { font-size: 16px; color: rgba(255,255,255,0.7); margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- FAQ ---------- */
.faq-section { padding: var(--space-section) 0; }
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary .faq-icon { transition: transform 0.3s; font-size: 18px; color: var(--accent); flex-shrink: 0; margin-left: 16px; }
.faq-item[open] summary .faq-icon { transform: rotate(45deg); }
.faq-answer { padding: 0 32px 20px 0; font-size: 14px; color: var(--text-secondary); line-height: 1.8; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--primary-deep); color: #A6B0A9; }
.footer-main { padding: 72px 0 48px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
}
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: #A6B0A9; margin-bottom: 16px; }
.footer-domain {
  display: inline-block;
  font-size: 13px;
  color: var(--accent);
  border: 1px solid rgba(197, 160, 92, 0.4);
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.04em;
}
.footer-col h4, .footer-contact h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { font-size: 14px; color: #A6B0A9; transition: color var(--transition); }
.footer-col ul a:hover { color: #fff; }
.footer-contact .contact-line { font-size: 14px; color: #A6B0A9; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.footer-contact .contact-line i { color: var(--accent); width: 16px; text-align: center; }
.copyright-bar {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  font-size: 13px;
  color: #76817A;
  text-align: center;
}

/* ---------- 焦点状态 ---------- */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width: 1024px) {
  .main-nav { gap: 20px; }
  .main-nav a { font-size: 14px; }
  .btn-primary { display: none; }
  .hamburger { display: flex; }
  .nav-cta.desktop-only { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media screen and (max-width: 768px) {
  .topbar-type { display: none; }
  .main-header .container { gap: 12px; }
  .container { padding-left: 16px; padding-right: 16px; }
  :root { --space-section: 64px; }
  .page-hero { padding: 64px 0 72px; }
  .page-hero h1 { font-size: 36px; }
  .page-hero .hero-desc { font-size: 16px; }
  .alternate-media img { height: 240px; }
  .alternate-content h2 { font-size: 26px; }
  .timeline-section h2, .section-header h2 { font-size: 30px; }
  .timeline-item { flex-direction: column; gap: 8px; }
  .timeline-num { text-align: left; width: auto; font-size: 36px; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .cta-band h2 { font-size: 28px; }
  .cta-btn-group .btn-gold, .cta-btn-group .btn-outline { width: 100%; }
  .topbar-actions { gap: 12px; }
  .feature-feints { grid-template-columns: 1fr; }
}
@media screen and (max-width: 520px) {
  .topbar-actions { gap: 8px; font-size: 12px; }
  .main-header .container { padding-left: 12px; padding-right: 12px; }
  .hero-breadcrumb { font-size: 12px; }
  .page-hero h1 { font-size: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* roulang page: article */
:root {
  --primary: #123F2E;
  --primary-deep: #0A2B1E;
  --accent: #C5A05C;
  --accent-light: #D9BC7A;
  --bg: #F7F6F2;
  --surface: #FFFFFF;
  --dark: #13201B;
  --text: #1E2420;
  --text-secondary: #5B6760;
  --border: #E4E6E1;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 1px 2px -1px rgba(0,0,0,0.06), 0 8px 24px -4px rgba(0,0,0,0.06);
  --shadow-hover: 0 12px 32px -4px rgba(0,0,0,0.12);
  --transition: 0.2s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.tabular-nums { font-variant-numeric: tabular-nums; }

/* ===== 顶部信息条 ===== */
.topbar {
  background: var(--primary-deep);
  color: #CDD6D1;
  font-size: 12px;
  height: 36px;
  display: flex;
  align-items: center;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}
.topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.topbar-domain {
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
}
.topbar-tip {
  opacity: 0.75;
}
.topbar-right {
  display: flex;
  gap: 18px;
}
.topbar-right a {
  color: #CDD6D1;
  transition: color var(--transition);
}
.topbar-right a:hover { color: #fff; }

/* ===== 主导航 ===== */
.main-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  height: 72px;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  white-space: nowrap;
}
.site-logo:hover { color: var(--primary); }
.logo-mark {
  width: 10px;
  height: 28px;
  background: var(--accent);
  border-radius: 999px;
  display: inline-block;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  padding: 8px 2px;
  position: relative;
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.2s ease;
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--primary); }
.nav-link.active::after { width: 100%; }
.nav-action {
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-deep);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -4px rgba(18,63,46,0.4);
}
.btn-accent {
  background: var(--accent);
  color: var(--primary-deep);
}
.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -4px rgba(197,160,92,0.5);
}
.btn-outline {
  background: transparent;
  border: 1px solid currentColor;
  color: var(--text);
}
.btn-outline:hover {
  background: rgba(18,63,46,0.08);
  transform: translateY(-1px);
}
.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}
.btn-lg {
  height: 56px;
  padding: 0 40px;
  font-size: 16px;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 面包屑 ===== */
.breadcrumb {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  font-size: 14px;
  color: var(--text-secondary);
}
.breadcrumb ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: #B0B8B2;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current { color: var(--text); font-weight: 500; }

/* ===== 文章头部 ===== */
.article-hero {
  background: linear-gradient(135deg, rgba(18,63,46,0.05) 0%, rgba(247,246,242,0) 60%);
  border-bottom: 1px solid var(--border);
  padding: 64px 0 48px;
}
.article-hero-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.article-cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(18,63,46,0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.article-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta i {
  color: var(--accent);
  font-size: 13px;
}

/* ===== 正文阅读区 ===== */
.article-page-main {
  padding: 56px 0 80px;
}
.article-content-wrap {
  max-width: 760px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 56px 64px;
}
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
}
.article-content p {
  margin-bottom: 24px;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin: 40px 0 16px;
  line-height: 1.4;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 32px 0 12px;
  line-height: 1.4;
}
.article-content h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin: 24px 0 10px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 24px 1.5em;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li {
  margin-bottom: 8px;
}
.article-content blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(197,160,92,0.06);
  padding: 20px 24px;
  margin: 0 0 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-content blockquote p:last-child {
  margin-bottom: 0;
}
.article-content img {
  border-radius: var(--radius);
  margin: 24px 0;
  border: 1px solid var(--border);
}
.article-content a {
  color: var(--primary);
  border-bottom: 1px solid rgba(18,63,46,0.3);
}
.article-content a:hover {
  border-bottom-color: var(--primary);
}
.article-content code {
  background: rgba(18,63,46,0.06);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9em;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-content th {
  background: rgba(18,63,46,0.04);
  font-weight: 600;
}
.article-divider {
  margin: 48px 0 0;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}
.article-share {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}
.share-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: all var(--transition);
  font-size: 14px;
}
.share-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* ===== 内容未找到 ===== */
.not-found {
  text-align: center;
  padding: 100px 24px;
}
.not-found-icon {
  font-size: 56px;
  color: var(--accent);
  margin-bottom: 24px;
}
.not-found h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* ===== 相关推荐 ===== */
.related-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 64px 0;
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 16px;
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}
.section-sub {
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: 8px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), border-color var(--transition);
  display: block;
}
.related-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}
.related-card-cover {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #E8EAE6;
}
.related-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .related-card-cover img {
  transform: scale(1.03);
}
.related-card-body {
  padding: 20px;
}
.related-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 8px;
  transition: color var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card:hover .related-card-body h3 {
  color: var(--primary);
}
.related-card-meta {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--dark);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity: 0.08;
}
.cta-box {
  position: relative;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.cta-box h2 {
  font-size: 32px;
  font-weight: 700;
  color: #FFF;
  margin-bottom: 16px;
  line-height: 1.3;
}
.cta-box p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
  font-size: 16px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-actions .btn-outline {
  color: #FFF;
  border-color: rgba(255,255,255,0.4);
}
.cta-actions .btn-outline:hover {
  background: rgba(255,255,255,0.12);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary-deep);
  color: #A6B0A9;
}
.footer-main {
  padding: 64px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
}
.footer-brand .logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #A6B0A9;
  margin-bottom: 16px;
  max-width: 280px;
}
.footer-domain {
  display: inline-block;
  border: 1px solid rgba(255,255,255,0.15);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.05em;
}
.footer-col h4,
.footer-contact h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul li a,
.footer-contact .contact-line {
  font-size: 14px;
  color: #A6B0A9;
  transition: color var(--transition);
}
.footer-col ul li a:hover {
  color: #fff;
}
.footer-contact .contact-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-contact .contact-line i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}
.copyright-bar {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  text-align: center;
}

/* ===== 返回顶部 ===== */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  font-size: 16px;
  z-index: 40;
  box-shadow: 0 8px 20px -4px rgba(18,63,46,0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.3s ease;
}
.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover {
  background: var(--primary-deep);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-content-wrap {
    padding: 40px;
  }
}
@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .topbar-tip {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-links {
    position: fixed;
    top: 108px;
    left: 0;
    right: 0;
    background: var(--primary-deep);
    flex-direction: column;
    align-items: stretch;
    padding: 24px 24px 32px;
    gap: 4px;
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 49;
    border-top: 1px solid rgba(255,255,255,0.08);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-links .nav-link {
    color: rgba(255,255,255,0.85);
    font-size: 18px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .nav-link::after { display: none; }
  .nav-link.active {
    color: var(--accent-light);
  }
  .nav-action {
    margin-left: auto;
  }
  .nav-action .btn {
    height: 38px;
    padding: 0 16px;
    font-size: 14px;
  }
  .article-hero {
    padding: 40px 0 32px;
  }
  .article-hero h1 {
    font-size: 30px;
  }
  .article-meta {
    gap: 12px;
  }
  .article-content-wrap {
    padding: 28px 20px;
    border-left: none;
    border-right: none;
    border-radius: 0;
    box-shadow: none;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .cta-box h2 {
    font-size: 26px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .section-title {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 520px) {
  .topbar-right a:first-child { display: none; }
  .article-hero h1 {
    font-size: 26px;
  }
  .article-content {
    font-size: 15px;
  }
  .article-content-wrap {
    padding: 24px 16px;
  }
  .article-meta {
    flex-direction: column;
    gap: 6px;
  }
  .footer-main {
    padding: 48px 0 32px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* roulang page: category2 */
:root {
  --primary: #123F2E;
  --primary-deep: #0A2B1E;
  --accent: #C5A05C;
  --accent-light: #D9BC7A;
  --bg: #F7F6F2;
  --surface: #FFFFFF;
  --dark: #13201B;
  --text: #1E2420;
  --text-secondary: #5B6760;
  --border: #E4E6E1;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow-sm: 0 1px 2px -1px rgba(0,0,0,0.06), 0 8px 24px -4px rgba(0,0,0,0.06);
  --shadow-md: 0 12px 32px -4px rgba(0,0,0,0.12);
  --container: 1200px;
  --section-gap: 112px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; border: none; outline: none; }
.container { max-width: var(--container); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* top bar */
.top-bar { background: var(--primary-deep); color: #CDD6D1; font-size: 12px; }
.top-bar .container { display: flex; align-items: center; height: 36px; gap: 12px; }
.top-domain { font-weight: 700; letter-spacing: 0.02em; }
.top-tagline { color: #96A39B; }
.top-actions { margin-left: auto; display: flex; gap: 16px; }
.top-actions a { color: #CDD6D1; transition: color 0.2s ease; }
.top-actions a:hover { color: #FFFFFF; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; height: 72px; gap: 24px; }
.logo { display: inline-flex; align-items: center; font-size: 24px; font-weight: 800; color: var(--primary); letter-spacing: -0.01em; }
.logo-mark { width: 10px; height: 10px; background: var(--accent); border-radius: 2px; margin-right: 10px; display: inline-block; }
.main-nav { display: flex; gap: 32px; margin-left: 24px; }
.main-nav a { font-size: 15px; font-weight: 600; color: var(--text); padding: 6px 0; position: relative; transition: color 0.2s ease; }
.main-nav a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px; background: var(--primary); transform: scaleX(0); transform-origin: left; transition: transform 0.2s ease; }
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active { color: var(--primary); }
.main-nav a.active::after { transform: scaleX(1); }
.nav-cta { margin-left: auto; }
.nav-toggle { display: none; background: none; cursor: pointer; width: 44px; height: 44px; border-radius: 4px; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.nav-toggle span { width: 20px; height: 2px; background: var(--primary); border-radius: 2px; transition: all 0.2s ease; }

/* mobile nav */
.mobile-nav { display: none; }
body.nav-open { overflow: hidden; }

/* button */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 28px; border-radius: 4px; font-size: 15px; font-weight: 600;
  cursor: pointer; transition: all 0.2s ease; border: 1px solid transparent; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #FFFFFF; }
.btn-primary:hover { background: var(--primary-deep); transform: translateY(-1px); box-shadow: 0 6px 18px -4px rgba(10,43,30,0.45); }
.btn-accent { background: var(--accent); color: var(--primary-deep); }
.btn-accent:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 6px 18px -4px rgba(197,160,92,0.45); }
.btn-outline { background: transparent; border-color: rgba(255,255,255,0.7); color: #FFFFFF; }
.btn-outline:hover { background: rgba(255,255,255,0.12); transform: translateY(-1px); }
.btn-block { width: 100%; }

/* page hero */
.page-hero { position: relative; padding: 88px 0 80px; background: var(--dark); overflow: hidden; }
.page-hero-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.25;
  animation: slowZoom 12s ease-in-out infinite alternate;
}
@keyframes slowZoom { from { transform: scale(1); } to { transform: scale(1.05); } }
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; font-size: 14px; color: #A6B0A9; margin-bottom: 20px; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .divider { margin: 0 10px; opacity: 0.5; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; background: rgba(197,160,92,0.18);
  border: 1px solid rgba(197,160,92,0.4); color: var(--accent-light); padding: 6px 14px;
  border-radius: 999px; font-size: 12px; font-weight: 600; letter-spacing: 0.08em; margin-bottom: 20px;
}
.page-hero h1 { font-size: 52px; font-weight: 800; line-height: 1.15; color: #FFFFFF; margin-bottom: 16px; }
.hero-desc { font-size: 18px; color: #C4CEC7; max-width: 640px; line-height: 1.7; }

/* section */
.section-block { padding: var(--section-gap) 0; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head .eyebrow { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 0.12em; color: var(--accent); margin-bottom: 10px; }
.section-head h2 { font-size: 32px; font-weight: 700; line-height: 1.3; color: var(--text); margin-bottom: 12px; }
.section-head p { color: var(--text-secondary); }

/* main layout */
.main-layout { padding: var(--section-gap) 0; }
.sidebar-inner { max-width: 320px; }

/* exercise card */
.exercise-card {
  display: flex; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm);
  margin-bottom: 32px; transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.exercise-card:hover { box-shadow: var(--shadow-md); border-color: rgba(197,160,92,0.6); }
.exercise-card .cover { width: 280px; min-height: 200px; flex-shrink: 0; overflow: hidden; }
.exercise-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.exercise-card:hover .cover img { transform: scale(1.04); }
.exercise-card .body { padding: 28px 28px 24px; flex: 1; display: flex; flex-direction: column; }
.card-badge {
  display: inline-block; align-self: flex-start; margin-bottom: 12px; background: rgba(18,63,46,0.08);
  color: var(--primary); font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
  padding: 4px 12px; border-radius: 999px;
}
.exercise-card h3 { font-size: 20px; font-weight: 600; color: var(--text); line-height: 1.4; margin-bottom: 10px; }
.exercise-card p { color: var(--text-secondary); font-size: 15px; line-height: 1.7; margin-bottom: 16px; }
.card-link { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-weight: 600; font-size: 14px; margin-top: auto; transition: gap 0.2s ease; }
.card-link i { font-size: 12px; }
.card-link:hover { gap: 12px; color: var(--primary-deep); }

/* trust strip */
.trust-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 28px; margin-top: 40px;
}
.trust-item { display: flex; align-items: center; gap: 14px; }
.trust-item i { color: var(--accent); font-size: 22px; width: 30px; text-align: center; }
.trust-item span { font-size: 14px; font-weight: 600; color: var(--text); }

/* sidebar */
.sidebar-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 28px; margin-bottom: 24px;
}
.sidebar-card h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.sidebar-card .subtext { font-size: 13px; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.6; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-field {
  width: 100%; height: 48px; background: #FBFBF9; border: 1px solid var(--border);
  border-radius: 4px; padding: 0 14px; font-size: 14px; color: var(--text);
  margin-bottom: 16px; transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
textarea.form-field { height: auto; min-height: 92px; padding: 12px 14px; resize: vertical; }
select.form-field {
  appearance: none; -webkit-appearance: none; background-repeat: no-repeat;
  background-position: right 14px center; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235B6760' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
}
.form-field:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(18,63,46,0.15); }
.contact-line { display: flex; align-items: center; gap: 12px; color: var(--text-secondary); font-size: 14px; padding: 8px 0; }
.contact-line i { color: var(--primary); width: 18px; text-align: center; }
.contact-line:not(:first-of-type) { border-top: 1px dashed var(--border); margin-top: 8px; }

/* CTA band */
.cta-band {
  position: relative; padding: 88px 0; text-align: center;
  background: var(--primary-deep) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  background-blend-mode: multiply;
}
.cta-band::before { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, rgba(10,43,30,0.94) 40%, rgba(18,63,46,0.86)); }
.cta-inner { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
.cta-inner h2 { font-size: 32px; font-weight: 700; color: #FFFFFF; margin-bottom: 12px; }
.cta-inner p { color: #C4CEC7; font-size: 16px; margin-bottom: 28px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* footer */
.site-footer { background: var(--dark); padding: 64px 0 0; color: #A6B0A9; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.footer-brand .logo { color: #FFFFFF; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: #8F9B94; max-width: 300px; }
.footer-domain { display: inline-block; margin-top: 16px; font-size: 13px; color: #A6B0A9; border: 1px solid rgba(255,255,255,0.18); padding: 5px 12px; border-radius: 4px; }
.footer-col h4, .footer-contact h4 { color: #FFFFFF; font-size: 14px; font-weight: 700; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { transition: color 0.2s ease; }
.footer-col a:hover { color: #FFFFFF; }
.copyright-bar { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; font-size: 13px; text-align: center; color: #7C877F; }

/* responsive */
@media (max-width: 1024px) {
  .main-nav { gap: 18px; margin-left: 12px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .exercise-card .cover { width: 240px; }
}
@media (max-width: 768px) {
  :root { --section-gap: 64px; }
  .main-nav, .nav-cta { display: none; }
  .nav-toggle { display: flex; margin-left: auto; }
  .mobile-nav {
    position: fixed; top: 108px; left: 0; right: 0;
    background: var(--primary-deep); padding: 24px; flex-direction: column;
    z-index: 49; box-shadow: 0 18px 30px -12px rgba(0,0,0,0.3);
  }
  .mobile-nav.open { display: flex; }
  .mobile-nav a {
    color: #FFFFFF; font-size: 18px; font-weight: 600; padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .mobile-nav a.active { color: var(--accent-light); }
  .page-hero { padding: 56px 0; }
  .page-hero h1 { font-size: 36px; }
  .hero-desc { font-size: 16px; }
  .exercise-card { flex-direction: column; }
  .exercise-card .cover { width: 100%; height: 220px; }
  .trust-strip { grid-template-columns: 1fr 1fr; }
  .sidebar-inner { max-width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .top-tagline { display: none; }
}
@media (max-width: 520px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .trust-strip { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 30px; }
  .hero-desc { font-size: 15px; }
  .btn { width: 100%; }
  .cta-actions .btn { width: auto; min-width: 160px; }
  .cta-band { padding: 64px 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* roulang page: category3 */
:root {
      --primary: #123F2E;
      --primary-deep: #0A2B1E;
      --accent: #C5A05C;
      --accent-light: #D9BC7A;
      --bg: #F7F6F2;
      --surface: #FFFFFF;
      --dark: #13201B;
      --text: #1E2420;
      --text-secondary: #5B6760;
      --border: #E4E6E1;
      --radius: 8px;
      --shadow-sm: 0 1px 2px -1px rgba(0,0,0,0.06), 0 8px 24px -4px rgba(0,0,0,0.06);
      --shadow-hover: 0 12px 32px -4px rgba(0,0,0,0.12);
      --transition: 0.2s ease;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
      background: var(--bg);
      color: var(--text);
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: color var(--transition); }
    a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
    button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
    ul, ol { list-style: none; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
    .section-padding { padding: 112px 0; }
    .text-secondary { color: var(--text-secondary); }
    .text-gold { color: var(--accent); }
    h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
    h2 { font-size: 32px; margin-bottom: 16px; }
    h3 { font-size: 20px; font-weight: 600; }
    p { margin-bottom: 12px; }
    .tnum { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
    .section-header { margin-bottom: 48px; }
    .section-header .eyebrow {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.08em;
      color: var(--accent);
      background: rgba(197,160,92,0.12);
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 12px;
      text-transform: none;
    }
    .section-header h2 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--text);
    }
    .section-header p { color: var(--text-secondary); font-size: 16px; max-width: 680px; }
    .btn {
      display: inline-block;
      height: 48px;
      line-height: 46px;
      padding: 0 28px;
      border-radius: 4px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      border: none;
      transition: all var(--transition);
      text-align: center;
    }
    .btn-primary { background: var(--primary); color: #fff; }
    .btn-primary:hover { background: var(--primary-deep); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(18,63,46,0.25); }
    .btn-accent { background: var(--accent); color: var(--primary-deep); }
    .btn-accent:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(197,160,92,0.3); }
    .btn-outline { background: transparent; border: 1px solid rgba(255,255,255,0.7); color: #fff; }
    .btn-outline:hover { background: rgba(255,255,255,0.1); transform: translateY(-1px); }
    .btn-outline-dark { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
    .btn-outline-dark:hover { background: rgba(18,63,46,0.08); transform: translateY(-1px); }
    .badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.08em;
      padding: 4px 12px;
      border-radius: 999px;
      background: rgba(18,63,46,0.08);
      color: var(--primary);
      line-height: 1.4;
    }
    .badge-gold {
      background: rgba(197,160,92,0.15);
      color: var(--accent);
      border: 1px solid rgba(197,160,92,0.3);
    }
    /* ===== 顶部信息条 ===== */
    .top-bar {
      background: var(--primary-deep);
      color: #CDD6D1;
      height: 36px;
      font-size: 12px;
      display: flex;
      align-items: center;
      padding: 0 24px;
      justify-content: space-between;
    }
    .top-bar .domain-text { font-weight: 700; color: #fff; margin-right: 8px; }
    .top-bar .domain-tip { color: #A6B0A9; }
    .top-bar .top-actions a { color: #CDD6D1; margin-left: 16px; transition: color var(--transition); }
    .top-bar .top-actions a:hover { color: #fff; }
    /* ===== 主导航 ===== */
    .main-header {
      background: var(--surface);
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 50;
    }
    .main-nav {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .logo-mark {
      width: 32px;
      height: 32px;
      border: 2px solid var(--primary);
      border-radius: 50%;
      position: relative;
    }
    .logo-mark::after {
      content: '';
      position: absolute;
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
    }
    .nav-links { display: flex; align-items: center; gap: 28px; }
    .nav-links a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-secondary);
      position: relative;
      padding: 6px 0;
      transition: color var(--transition);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width 0.2s ease;
    }
    .nav-links a:hover { color: var(--primary); }
    .nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
    .nav-links a.active { color: var(--primary); }
    .nav-cta { display: flex; align-items: center; gap: 12px; }
    .nav-cta .btn { height: 40px; line-height: 38px; padding: 0 20px; font-size: 14px; }
    .hamburger {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      width: 40px;
      height: 40px;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 6px;
    }
    .hamburger span { display: block; width: 22px; height: 2px; background: var(--primary); transition: all 0.3s ease; }
    .hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.open span:nth-child(2) { opacity: 0; }
    .hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
    .mobile-nav {
      display: none;
      position: fixed;
      top: 108px;
      left: 0;
      width: 100%;
      height: calc(100vh - 108px);
      background: var(--primary-deep);
      z-index: 60;
      padding: 48px 24px;
      flex-direction: column;
      gap: 20px;
      overflow-y: auto;
    }
    .mobile-nav.open { display: flex; }
    .mobile-nav a {
      color: #fff;
      font-size: 28px;
      font-weight: 700;
      opacity: 0.85;
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding: 16px 0;
      transition: opacity var(--transition), padding-left var(--transition);
    }
    .mobile-nav a:hover { opacity: 1; padding-left: 8px; }
    .mobile-nav a.active { color: var(--accent-light); opacity: 1; }
    /* ===== Hero/Breadcrum ===== */
    .page-hero {
      position: relative;
      background: linear-gradient(135deg, rgba(10,43,30,0.94) 0%, rgba(18,63,46,0.78) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      padding: 96px 0 80px;
      color: #fff;
    }
    .breadcrumb {
      font-size: 14px;
      color: rgba(255,255,255,0.6);
      margin-bottom: 32px;
    }
    .breadcrumb a { color: rgba(255,255,255,0.6); }
    .breadcrumb a:hover { color: #fff; }
    .breadcrumb .sep { margin: 0 8px; }
    .page-hero h1 {
      font-size: 52px;
      font-weight: 800;
      line-height: 1.15;
      margin-bottom: 20px;
    }
    .page-hero .hero-desc {
      font-size: 18px;
      color: rgba(255,255,255,0.8);
      max-width: 640px;
      line-height: 1.7;
      margin-bottom: 32px;
    }
    .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
    /* ===== 场馆卡片网格 ===== */
    .venue-section { padding: 112px 0; }
    .venue-grid .grid-x { margin: 0 -12px; }
    .venue-grid .cell { padding: 12px; }
    .venue-card {
      background: var(--surface);
      border-radius: var(--radius);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: all var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .venue-card:hover {
      border-color: var(--accent);
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .venue-card .cover {
      position: relative;
      aspect-ratio: 16/10;
      overflow: hidden;
    }
    .venue-card .cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .venue-card:hover .cover img { transform: scale(1.03); }
    .venue-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
    .venue-card .card-body h3 { font-size: 20px; font-weight: 600; margin: 12px 0 8px; }
    .venue-card .card-body p { font-size: 15px; color: var(--text-secondary); margin-bottom: 16px; flex: 1; }
    .venue-card .card-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-secondary); }
    .venue-card .card-meta i { color: var(--accent); margin-right: 4px; }
    .venue-card .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--primary);
      font-weight: 600;
      font-size: 14px;
      margin-top: 12px;
      transition: gap var(--transition);
    }
    .venue-card .card-link:hover { gap: 10px; color: var(--primary-deep); }
    .venue-card-large .cover { aspect-ratio: 21/10; }
    .venue-card-large .card-body h3 { font-size: 24px; }
    /* ===== 预约流程 ===== */
    .process-section { background: var(--surface); padding: 112px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
    .process-grid { display: flex; gap: 40px; flex-wrap: wrap; }
    .process-step { flex: 1; min-width: 220px; position: relative; padding: 32px 24px; border-left: 1px solid var(--border); }
    .process-step:first-child { border-left: none; }
    .process-num {
      font-size: 88px;
      font-weight: 800;
      color: rgba(197,160,92,0.18);
      line-height: 1;
      margin-bottom: 16px;
      font-variant-numeric: tabular-nums;
    }
    .process-step h3 { font-size: 18px; margin-bottom: 8px; }
    .process-step p { font-size: 14px; color: var(--text-secondary); margin-bottom: 0; }
    /* ===== 数据/信任区 ===== */
    .stats-section { padding: 80px 0; background: var(--primary-deep); color: #fff; }
    .stats-grid { display: flex; gap: 48px; flex-wrap: wrap; justify-content: space-between; }
    .stat-item { text-align: left; }
    .stat-value {
      font-size: 48px;
      font-weight: 800;
      color: var(--accent);
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
      margin-bottom: 4px;
    }
    .stat-label { font-size: 14px; color: #A6B0A9; }
    /* ===== FAQ ===== */
    .faq-section { padding: 112px 0; }
    .faq-wrap { max-width: 860px; margin: 0 auto; }
    .accordion { background: transparent; border: none; }
    .accordion-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition);
    }
    .accordion-item:hover { border-color: rgba(18,63,46,0.4); }
    .accordion-item.is-active { border-color: var(--primary); box-shadow: 0 4px 16px rgba(18,63,46,0.08); }
    .accordion-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 22px 28px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      background: var(--surface) !important;
      border: none !important;
      position: relative;
      transition: color var(--transition);
    }
    .accordion-title::before { display: none; }
    .accordion-title::after {
      content: '+';
      font-size: 24px;
      font-weight: 400;
      color: var(--accent);
      transition: transform 0.3s ease;
      margin-left: 16px;
    }
    .accordion-item.is-active .accordion-title::after { transform: rotate(45deg); }
    .accordion-content {
      padding: 0 28px 22px !important;
      font-size: 14px;
      color: var(--text-secondary);
      background: var(--surface) !important;
      border: none !important;
      line-height: 1.75;
    }
    .accordion-content p { margin-bottom: 8px; }
    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(135deg, rgba(10,43,30,0.95) 0%, rgba(19,32,27,0.9) 100%), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
      padding: 112px 0;
      color: #fff;
      text-align: center;
    }
    .cta-section h2 { font-size: 36px; font-weight: 800; margin-bottom: 12px; }
    .cta-section p { font-size: 18px; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 32px; }
    .cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
    /* ===== 页脚 ===== */
    .site-footer { background: var(--primary-deep); color: #A6B0A9; border-top: 1px solid rgba(255,255,255,0.06); }
    .footer-main { padding: 64px 0 48px; }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 48px;
    }
    .footer-brand .logo { color: #fff; margin-bottom: 16px; }
    .footer-brand .logo-mark { border-color: var(--accent); }
    .footer-brand p { font-size: 14px; line-height: 1.7; margin-bottom: 16px; max-width: 320px; }
    .footer-domain {
      display: inline-block;
      font-size: 13px;
      color: var(--accent);
      font-weight: 600;
      background: rgba(197,160,92,0.15);
      padding: 4px 12px;
      border-radius: 999px;
    }
    .footer-col h4 {
      font-size: 15px;
      color: #fff;
      font-weight: 600;
      margin-bottom: 20px;
    }
    .footer-col ul li { margin-bottom: 12px; }
    .footer-col ul a { font-size: 14px; color: #A6B0A9; }
    .footer-col ul a:hover { color: #fff; padding-left: 4px; }
    .footer-contact h4 { font-size: 15px; color: #fff; font-weight: 600; margin-bottom: 20px; }
    .contact-line {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      margin-bottom: 12px;
      color: #A6B0A9;
    }
    .contact-line i { color: var(--accent); width: 16px; text-align: center; }
    .copyright-bar {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding: 20px 0;
      text-align: center;
      font-size: 13px;
      color: #7F8A84;
    }
    /* ===== 动画 ===== */
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(12px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .a-fade-up { animation: fadeInUp 0.6s ease both; }
    .a-delay-1 { animation-delay: 0.1s; }
    .a-delay-2 { animation-delay: 0.2s; }
    @keyframes slowZoom {
      0%, 100% { transform: scale(1.03); }
      50% { transform: scale(1.06); }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
      }
      html { scroll-behavior: auto; }
    }
    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .nav-links { gap: 16px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
      .page-hero h1 { font-size: 40px; }
      .stats-grid { gap: 24px; }
      .stat-value { font-size: 38px; }
    }
    @media (max-width: 768px) {
      .nav-links, .nav-cta .btn { display: none; }
      .hamburger { display: flex; }
      .nav-cta .btn { display: none; }
      .top-bar { padding: 0 16px; }
      .top-bar .domain-tip { display: none; }
      .top-bar .top-actions a:first-child { margin-left: 0; }
      .section-padding, .venue-section, .process-section, .faq-section, .cta-section { padding: 64px 0; }
      .page-hero { padding: 72px 0 56px; }
      .page-hero h1 { font-size: 36px; }
      .page-hero .hero-desc { font-size: 16px; }
      .process-grid { flex-direction: column; gap: 0; }
      .process-step { border-left: none; border-top: 1px solid var(--border); padding: 24px 0; }
      .process-step:first-child { border-top: none; }
      .process-num { font-size: 64px; }
      .stats-grid { gap: 32px; }
      .stat-value { font-size: 32px; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .cta-section h2 { font-size: 28px; }
      .cta-section p { font-size: 16px; }
      .btn { height: 44px; line-height: 42px; padding: 0 22px; font-size: 14px; }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; }
      .container { padding: 0 16px; }
    }
    @media (max-width: 520px) {
      .top-bar { height: 32px; font-size: 11px; }
      .main-nav { height: 64px; }
      .logo { font-size: 18px; }
      .page-hero { padding: 56px 0 48px; }
      .breadcrumb { font-size: 13px; margin-bottom: 20px; }
      .section-header h2 { font-size: 26px; }
      .accordion-title { font-size: 15px; padding: 18px 20px; }
      .accordion-content { padding: 0 20px 18px !important; }
      .stat-value { font-size: 28px; }
      .footer-main { padding: 48px 0 32px; }
      .venue-card .card-body { padding: 18px; }
    }