/* roulang page: index */
:root {
  --primary: #0F766E;
  --primary-dark: #115E59;
  --primary-light: #14B8A6;
  --cta: #F59E0B;
  --cta-hover: #D97706;
  --bg: #F8F7F4;
  --card-bg: #FFFFFF;
  --dark: #1C1917;
  --text: #1C1917;
  --text-2: #57534E;
  --text-3: #A8A29E;
  --border: rgba(28, 25, 23, 0.08);
  --border-hover: rgba(28, 25, 23, 0.12);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --side-w: 220px;
  --content-max: 1200px;
  --content-pad: 24px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  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 .2s; }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 15px; }

.container { max-width: var(--content-max); margin: 0 auto; padding: 0 var(--content-pad); }
.section-head { margin-bottom: 40px; }
.section-tag {
  display: inline-block;
  background: rgba(15, 118, 110, 0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: 30px;
  line-height: 1.3;
  font-weight: 700;
  position: relative;
  padding-bottom: 14px;
  margin-bottom: 10px;
}
.section-head h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
}
.section-head p { color: var(--text-2); max-width: 640px; font-size: 15px; }
.section-head.center { text-align: center; }
.section-head.center h2::after { left: 50%; transform: translateX(-50%); }
.section-head.center p { margin: 0 auto; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  border: none;
  transition: all .2s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-ghost:hover { background: rgba(15, 118, 110, 0.05); color: var(--primary-dark); transform: translateY(-2px); }
.btn-ghost:active { transform: translateY(0); }
.btn-cta { background: var(--cta); color: var(--dark); }
.btn-cta:hover { background: var(--cta-hover); color: var(--dark); transform: translateY(-2px); }
.btn-cta:active { transform: translateY(0); }
.btn-outline { background: #fff; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }

/* ===== App Shell ===== */
.app-side {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--side-w);
  background: var(--card-bg);
  border-right: 1px solid var(--border);
  z-index: 200;
  display: flex;
  flex-direction: column;
  padding: 24px 18px;
}
.side-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 24px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text strong { font-size: 17px; font-weight: 800; color: var(--text); letter-spacing: 0.5px; }
.logo-text small { font-size: 12px; color: var(--text-3); margin-top: 3px; }
.side-nav { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.side-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-md);
  color: var(--text-2);
  font-size: 15px;
  font-weight: 500;
  transition: all .2s;
  position: relative;
}
.side-nav .nav-item i { width: 20px; text-align: center; font-size: 16px; color: var(--text-3); transition: color .2s; }
.side-nav .nav-item:hover { background: rgba(15, 118, 110, 0.05); color: var(--text); }
.side-nav .nav-item:hover i { color: var(--primary); }
.side-nav .nav-item.active {
  background: rgba(15, 118, 110, 0.08);
  color: var(--primary);
  font-weight: 600;
}
.side-nav .nav-item.active i { color: var(--primary); }
.side-nav .nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: 2px;
  background: var(--primary);
}
.side-foot { border-top: 1px solid var(--border); padding-top: 18px; font-size: 12px; color: var(--text-3); line-height: 1.8; }
.side-foot p { display: flex; align-items: center; gap: 8px; }
.side-foot i { color: var(--primary); width: 14px; text-align: center; }
.side-foot .copyright { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--border); }

.app-main { margin-left: var(--side-w); min-height: 100vh; }

/* ===== Mobile Top ===== */
.mobile-top {
  display: none;
  position: sticky;
  top: 0;
  z-index: 300;
  height: 56px;
  background: var(--dark);
  color: #fff;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  box-shadow: var(--shadow-sm);
}
.mobile-logo { color: #fff; font-size: 17px; font-weight: 800; letter-spacing: 0.5px; }
.mobile-logo:hover { color: var(--primary-light); }
.menu-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 20px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.menu-btn:hover { background: rgba(255, 255, 255, 0.1); }

/* ===== Drawer ===== */
.drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 290px;
  background: var(--dark);
  color: #fff;
  z-index: 400;
  transform: translateX(-100%);
  transition: transform .3s ease;
  display: flex;
  flex-direction: column;
  padding: 20px 18px;
}
.drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.drawer-logo { font-size: 16px; font-weight: 800; color: #fff; }
.drawer-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 18px;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.drawer-close:hover { background: rgba(255, 255, 255, 0.1); }
.drawer-nav { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.drawer-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 48px;
  padding: 0 14px;
  border-radius: var(--radius-md);
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  font-weight: 500;
}
.drawer-nav .nav-item i { width: 20px; text-align: center; color: rgba(255, 255, 255, 0.6); }
.drawer-nav .nav-item:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.drawer-nav .nav-item.active { color: var(--primary-light); background: rgba(20, 184, 166, 0.12); }
.drawer-nav .nav-item.active i { color: var(--primary-light); }
.drawer-foot { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 16px; font-size: 13px; color: rgba(255, 255, 255, 0.5); line-height: 1.8; }
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 350;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.drawer-overlay.show { opacity: 1; pointer-events: auto; }

@media (min-width: 1024px) {
  .drawer, .drawer-overlay { display: none; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(105deg, #F8F7F4 0%, rgba(248,247,244,.95) 35%, rgba(248,247,244,.82) 60%, rgba(15,118,110,.18) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 90px 0 80px;
  border-bottom: 1px solid var(--border);
}
.hero-inner { display: flex; align-items: center; gap: 50px; }
.hero-copy { flex: 0 0 55%; max-width: 620px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #92400E;
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}
.hero-badge i { font-size: 12px; }
.hero h1 {
  font-size: 44px;
  line-height: 1.2;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.hero-sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-2);
  margin-bottom: 28px;
  max-width: 460px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-2);
}
.hero-trust .dot { color: var(--primary-light); }
.hero-visual { flex: 1; min-width: 0; }
.hero-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  box-shadow: var(--shadow-lg);
  max-width: 280px;
  margin-left: auto;
}
.hero-card .stat { font-size: 40px; font-weight: 800; color: var(--primary); line-height: 1.1; }
.hero-card .stat span { font-size: 18px; }
.hero-card .label { font-size: 14px; color: var(--text-2); margin-top: 6px; }
.hero-card .divider { height: 1px; background: var(--border); margin: 16px 0; }
.hero-card .sub { font-size: 13px; color: var(--text-3); }

/* ===== Stats Bar ===== */
.stats-bar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; }
.stat-item .num { font-size: 30px; font-weight: 800; color: var(--primary); line-height: 1.2; }
.stat-item .num i { font-size: 20px; vertical-align: middle; margin-right: 6px; color: var(--cta); }
.stat-item .desc { font-size: 13px; color: var(--text-3); margin-top: 4px; }

/* ===== Tiers ===== */
.tiers { padding: 80px 0; }
.tier-stairs {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}
.tier-card {
  flex: 1;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 34px 28px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .3s, transform .3s;
}
.tier-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.tier-card.tier-1 { margin-top: 48px; }
.tier-card.tier-2 { margin-top: 0; border: 2px solid var(--primary); }
.tier-card.tier-3 { margin-top: 24px; }
.tier-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cta);
  color: var(--dark);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}
.tier-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}
.tier-name { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.tier-scene { font-size: 14px; color: var(--text-3); margin-bottom: 18px; }
.tier-price { font-size: 36px; font-weight: 800; color: var(--cta-hover); line-height: 1.1; margin-bottom: 18px; }
.tier-price span { font-size: 14px; font-weight: 400; color: var(--text-3); }
.tier-features { margin-bottom: 22px; display: flex; flex-direction: column; gap: 8px; }
.tier-features li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-2); line-height: 1.5; }
.tier-features li i { color: var(--primary); margin-top: 3px; font-size: 14px; flex-shrink: 0; }
.tier-card .btn { width: 100%; }

/* ===== Process ===== */
.process {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 80px 0;
}
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process-step {
  text-align: center;
  padding: 30px 18px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 1px solid var(--border);
  position: relative;
  transition: box-shadow .3s;
}
.process-step:hover { box-shadow: var(--shadow-lg); }
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
}
.process-step .step-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin: 0 auto 16px;
}
.process-step h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.process-step p { font-size: 14px; color: var(--text-2); line-height: 1.6; }

/* ===== Plans Table ===== */
.plans { padding: 80px 0; }
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--card-bg); box-shadow: var(--shadow-sm); }
.plan-table { width: 100%; border-collapse: collapse; min-width: 700px; }
.plan-table th, .plan-table td { padding: 16px 20px; text-align: center; font-size: 14px; border-bottom: 1px solid var(--border); }
.plan-table thead th { background: var(--bg); font-weight: 700; color: var(--text); font-size: 15px; }
.plan-table thead th.hot {
  background: rgba(15, 118, 110, 0.08);
  color: var(--primary);
  position: relative;
}
.plan-table thead th.hot .rec-tag {
  display: inline-block;
  background: var(--cta);
  color: var(--dark);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  margin-left: 6px;
  vertical-align: middle;
}
.plan-table tbody tr:last-child td { border-bottom: none; }
.plan-table tbody td.hot-row { background: rgba(15, 118, 110, 0.04); }
.plan-table td .price { font-size: 20px; font-weight: 800; color: var(--cta-hover); }
.plan-table td .price span { font-size: 13px; font-weight: 400; color: var(--text-3); }
.plan-table tbody td { color: var(--text-2); }
.plan-table tbody td.hot-row { color: var(--text); font-weight: 500; }
.plan-table td .fa-check { color: var(--primary); }
.plan-table td .fa-minus { color: var(--text-3); }

/* ===== Deal Bar ===== */
.deal-bar {
  background: var(--dark);
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}
.deal-bar::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(15, 118, 110, 0.4);
}
.deal-bar::after {
  content: "";
  position: absolute;
  right: 40px;
  bottom: -80px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.25);
}
.deal-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; position: relative; z-index: 1; }
.deal-tag {
  display: inline-block;
  background: var(--cta);
  color: var(--dark);
  font-size: 13px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}
.deal-inner h3 { color: #fff; font-size: 24px; font-weight: 700; margin-bottom: 18px; line-height: 1.4; }
.countdown { display: flex; gap: 12px; }
.cd-block { background: #292524; border-radius: var(--radius-md); padding: 10px 14px; text-align: center; min-width: 64px; }
.cd-num { display: block; font-size: 32px; font-weight: 800; color: #fff; line-height: 1.2; }
.cd-label { font-size: 12px; color: rgba(255, 255, 255, 0.6); margin-top: 4px; display: block; }

/* ===== Latest / News ===== */
.latest { padding: 80px 0; }
.latest-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow .3s, transform .3s;
}
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.card-img { display: block; aspect-ratio: 16/9; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.news-card:hover .card-img img { transform: scale(1.03); }
.card-tag {
  display: inline-block;
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin: 16px 16px 0;
  width: fit-content;
}
.news-card h3 { font-size: 16px; font-weight: 700; line-height: 1.4; padding: 10px 16px 0; }
.news-card h3 a { color: var(--text); }
.news-card h3 a:hover { color: var(--primary); }
.card-excerpt { font-size: 14px; color: var(--text-2); padding: 8px 16px 0; line-height: 1.6; flex: 1; }
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  margin-top: 14px;
  font-size: 12px;
  color: var(--text-3);
}
.card-meta a { color: var(--primary); font-weight: 600; }
.empty-tip {
  grid-column: 1 / -1;
  border: 2px dashed var(--border-hover);
  border-radius: var(--radius-lg);
  padding: 60px 24px;
  text-align: center;
  color: var(--text-3);
  font-size: 15px;
}

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; background: var(--card-bg); border-top: 1px solid var(--border); }
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 4px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color .2s;
}
.faq-q:hover { color: var(--primary); }
.faq-q .faq-icon { color: var(--text-3); transition: transform .2s; }
.faq-item.active .faq-q .faq-icon { transform: rotate(45deg); color: var(--primary); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a-inner { padding: 0 4px 22px; color: var(--text-2); font-size: 15px; line-height: 1.75; }

/* ===== Contact ===== */
.contact { padding: 80px 0; }
.contact-wrap { display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: start; }
.contact-info h2 { font-size: 30px; font-weight: 700; margin-bottom: 16px; }
.contact-info p { color: var(--text-2); margin-bottom: 24px; }
.contact-list { display: flex; flex-direction: column; gap: 16px; }
.contact-list li { display: flex; align-items: flex-start; gap: 14px; }
.contact-list .c-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.contact-list .c-text strong { font-size: 15px; color: var(--text); display: block; }
.contact-list .c-text span { font-size: 14px; color: var(--text-2); }
.contact-form {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--text); }
.form-group label em { color: #DC2626; font-style: normal; margin-left: 2px; }
.form-group input,
.form-group textarea {
  height: 44px;
  border: 1px solid #E7E5E4;
  border-radius: var(--radius-md);
  padding: 0 14px;
  background: #fff;
  font-size: 15px;
  color: var(--text);
  transition: border-color .2s, box-shadow .2s;
}
.form-group textarea { height: auto; min-height: 120px; padding: 12px 14px; resize: vertical; }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}
.form-submit { margin-top: 20px; }
.form-msg { margin-top: 14px; font-size: 14px; border-radius: var(--radius-md); padding: 10px 14px; display: none; }
.form-msg.success { display: block; background: rgba(15, 118, 110, 0.08); color: var(--primary); }

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
  margin-left: var(--side-w);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .footer-logo {
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-brand .footer-logo i {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.footer-brand p { font-size: 14px; line-height: 1.7; margin-bottom: 12px; }
.footer-brand .domain { font-size: 13px; color: var(--text-3); }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  transition: color .2s;
}
.footer-col ul a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

/* ===== Responsive ===== */
@media (min-width: 1024px) and (max-width: 1199px) {
  :root { --side-w: 200px; }
  .hero h1 { font-size: 38px; }
  .latest-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1023px) {
  .app-side { display: none; }
  .app-main { margin-left: 0; }
  .mobile-top { display: flex; }
  .site-footer { margin-left: 0; }
  .hero { padding: 60px 0 50px; }
  .hero-inner { flex-direction: column; gap: 30px; }
  .hero-copy { flex: 0 0 auto; max-width: none; }
  .hero-visual { display: none; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); gap: 12px; }
  .tier-stairs { flex-direction: column; align-items: center; }
  .tier-card { max-width: 480px; width: 100%; }
  .tier-card.tier-1, .tier-card.tier-2, .tier-card.tier-3 { margin-top: 24px; }
  .tier-card.tier-2 { order: -1; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .latest-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .deal-inner { flex-direction: column; text-align: center; }
  .countdown { justify-content: center; }
  .contact-wrap { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 767px) {
  .hero { padding: 44px 0 40px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-trust { flex-direction: column; align-items: flex-start; gap: 4px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px 12px; }
  .section-head h2 { font-size: 24px; }
  .section-head p { font-size: 14px; }
  .process-grid { grid-template-columns: 1fr; }
  .latest-grid { grid-template-columns: 1fr; }
  .plans { padding: 56px 0; }
  .tiers { padding: 56px 0; }
  .latest { padding: 56px 0; }
  .faq-section { padding: 56px 0; }
  .contact { padding: 56px 0; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .cd-block { min-width: 56px; padding: 8px 10px; }
  .cd-num { font-size: 24px; }
}

/* roulang page: category1 */
:root {
  --primary: #0F766E;
  --primary-dark: #115E59;
  --primary-light: #14B8A6;
  --accent: #F59E0B;
  --accent-dark: #D97706;
  --bg: #F8F7F4;
  --card: #FFFFFF;
  --dark: #1C1917;
  --text: #1C1917;
  --text-2: #57534E;
  --text-3: #A8A29E;
  --border: rgba(28,25,23,0.08);
  --border-hover: rgba(28,25,23,0.12);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.08);
  --sidebar-w: 220px;
  --max-w: 1200px;
  --read-w: 760px;
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  margin-left: var(--sidebar-w);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ===== 左侧 App Shell 导航 ===== */
.side-nav {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  padding: 24px 16px 20px;
}
.nav-logo { display: flex; align-items: center; gap: 12px; padding: 0 8px 24px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.nav-logo .logo-icon { width: 42px; height: 42px; border-radius: 12px; background: var(--primary); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; flex-shrink: 0; }
.nav-logo .logo-text { line-height: 1.35; }
.nav-logo .logo-text strong { display: block; font-size: 15px; font-weight: 800; color: var(--text); letter-spacing: 0.2px; }
.nav-logo .logo-text span { font-size: 12px; color: var(--text-3); font-weight: 400; }
.nav-links { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  height: 44px; padding: 0 12px;
  border-radius: var(--radius-md);
  font-size: 15px; font-weight: 500; color: var(--text-2);
  transition: all 0.2s ease; position: relative;
}
.nav-item i { width: 20px; text-align: center; font-size: 16px; color: var(--text-3); transition: color 0.2s; }
.nav-item:hover { background: rgba(15,118,110,0.05); color: var(--primary); }
.nav-item:hover i { color: var(--primary); }
.nav-item.active { background: rgba(15,118,110,0.08); color: var(--primary); font-weight: 700; }
.nav-item.active::before { content: ""; position: absolute; left: -16px; top: 10px; bottom: 10px; width: 3px; border-radius: 0 3px 3px 0; background: var(--primary); }
.nav-item.active i { color: var(--primary); }
.nav-bottom { border-top: 1px solid var(--border); padding-top: 16px; }
.nav-bottom p { font-size: 12px; color: var(--text-3); line-height: 1.7; padding: 0 8px; }
.nav-bottom .domain { color: var(--border-hover); }

/* ===== 移动端顶部栏 / 抽屉 ===== */
.mobile-topbar {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; height: 56px;
  background: var(--card); border-bottom: 1px solid var(--border);
  align-items: center; justify-content: space-between;
  padding: 0 16px; z-index: 1000;
}
.mobile-topbar .mobile-logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 15px; color: var(--text); }
.mobile-topbar .mobile-logo i { color: var(--primary); font-size: 18px; }
.mobile-burger { width: 40px; height: 40px; border-radius: 10px; background: transparent; display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--text); cursor: pointer; transition: background 0.2s; }
.mobile-burger:hover { background: var(--bg); }
.drawer-overlay { position: fixed; inset: 0; background: rgba(28,25,23,0.5); z-index: 2000; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
.drawer-overlay.show { opacity: 1; visibility: visible; }
.drawer {
  position: fixed; top: 0; left: 0; bottom: 0; width: 280px;
  background: var(--dark); z-index: 2001; padding: 20px 20px;
  transform: translateX(-100%); transition: transform 0.3s ease;
  display: flex; flex-direction: column;
}
.drawer.show { transform: translateX(0); }
.drawer-close { align-self: flex-end; width: 36px; height: 36px; border-radius: 10px; background: rgba(255,255,255,0.08); color: #fff; display: flex; align-items: center; justify-content: center; cursor: pointer; margin-bottom: 8px; transition: background 0.2s; }
.drawer-close:hover { background: rgba(255,255,255,0.15); }
.drawer-logo { display: flex; align-items: center; gap: 10px; padding: 12px 8px 20px; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 16px; }
.drawer-logo i { width: 38px; height: 38px; border-radius: 10px; background: var(--primary-light); color: var(--dark); display: flex; align-items: center; justify-content: center; font-size: 17px; }
.drawer-logo strong { color: #fff; font-size: 15px; font-weight: 700; display: block; line-height: 1.4; }
.drawer-logo span { color: rgba(255,255,255,0.5); font-size: 12px; }
.drawer .drawer-links { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.drawer .drawer-links a { display: flex; align-items: center; gap: 12px; padding: 12px 10px; border-radius: 10px; color: rgba(255,255,255,0.8); font-size: 15px; transition: all 0.2s; }
.drawer .drawer-links a i { width: 20px; text-align: center; color: rgba(255,255,255,0.4); }
.drawer .drawer-links a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.drawer .drawer-links a.active { background: rgba(20,184,166,0.15); color: var(--primary-light); font-weight: 700; }
.drawer .drawer-links a.active i { color: var(--primary-light); }
.drawer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 16px; font-size: 12px; color: rgba(255,255,255,0.4); line-height: 1.7; }

/* ===== Main ===== */
.main-content { padding: 0 40px; }

/* ===== Hero ===== */
.category-hero { position: relative; min-height: 420px; display: flex; align-items: center; margin: 32px 0 56px; border-radius: 20px; overflow: hidden; background: var(--dark); }
.category-hero .hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.4; }
.category-hero .hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(28,25,23,0.92) 0%, rgba(28,25,23,0.55) 55%, rgba(28,25,23,0.2) 100%); }
.category-hero .container { position: relative; z-index: 2; padding: 48px 40px; max-width: 760px; margin: 0; }
.hero-tag { display: inline-flex; align-items: center; gap: 6px; background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.4); color: #FBBF24; font-size: 13px; font-weight: 600; padding: 5px 14px; border-radius: var(--radius-full); margin-bottom: 20px; letter-spacing: 1px; }
.category-hero h1 { font-size: 42px; font-weight: 800; line-height: 1.25; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
.category-hero h1 .accent { color: #5EEAD4; }
.category-hero p { font-size: 16px; line-height: 1.8; color: rgba(255,255,255,0.85); max-width: 560px; margin-bottom: 24px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 48px; padding: 0 28px; border-radius: var(--radius-md); font-size: 16px; font-weight: 600; cursor: pointer; transition: all 0.25s ease; white-space: nowrap; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-ghost { background: transparent; border: 1.5px solid rgba(255,255,255,0.5); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.08); border-color: #fff; transform: translateY(-2px); }
.btn-ghost:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: var(--dark); }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.3); }
.btn-accent:active { transform: translateY(0); }

/* ===== 区块标题 ===== */
.section-title { margin-bottom: 40px; }
.section-title .overline { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--primary); margin-bottom: 8px; }
.section-title h2 { font-size: 30px; font-weight: 700; line-height: 1.3; color: var(--text); margin-bottom: 12px; }
.section-title h2::after { content: ""; display: block; width: 40px; height: 4px; background: var(--primary); border-radius: 2px; margin-top: 14px; }
.section-title p { font-size: 15px; color: var(--text-2); max-width: 640px; line-height: 1.7; }

/* ===== 分类介绍（图文交错） ===== */
.intro-section { padding: 56px 0; }
.intro-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 64px; }
.intro-row:last-child { margin-bottom: 0; }
.intro-row.reverse .intro-img { order: 2; }
.intro-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); aspect-ratio: 4 / 3; background: rgba(15,118,110,0.06); }
.intro-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.intro-img:hover img { transform: scale(1.03); }
.intro-body h3 { font-size: 24px; font-weight: 700; margin-bottom: 14px; line-height: 1.4; }
.intro-body p { color: var(--text-2); font-size: 15px; line-height: 1.8; margin-bottom: 14px; }
.intro-body p:last-child { margin-bottom: 0; }
.intro-body .highlight-list { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }
.intro-body .highlight-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; color: var(--text); }
.intro-body .highlight-list i { color: var(--primary-light); font-size: 16px; margin-top: 4px; flex-shrink: 0; }

/* ===== 方法模块 ===== */
.method-section { padding: 64px 0; background: var(--card); border-radius: 20px; margin: 56px 0; box-shadow: var(--shadow-sm); }
.method-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 0 40px; }
.method-card { text-align: left; padding: 28px 24px; border-radius: var(--radius-lg); background: var(--bg); border: 1px solid var(--border); transition: all 0.25s ease; }
.method-card:hover { border-color: var(--primary); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.method-card .method-icon { width: 52px; height: 52px; border-radius: 14px; background: rgba(15,118,110,0.08); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 18px; }
.method-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.method-card p { font-size: 14px; color: var(--text-2); line-height: 1.7; }

/* ===== 内容精选 ===== */
.content-section { padding: 56px 0; }
.content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.content-card { background: var(--card); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all 0.3s ease; display: flex; flex-direction: column; }
.content-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: var(--border-hover); }
.content-card .card-img { aspect-ratio: 16 / 9; overflow: hidden; background: rgba(15,118,110,0.06); }
.content-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.content-card:hover .card-img img { transform: scale(1.03); }
.content-card .card-body { padding: 20px 22px 18px; display: flex; flex-direction: column; flex: 1; }
.card-tag { display: inline-flex; align-self: flex-start; font-size: 12px; color: var(--primary); background: rgba(15,118,110,0.08); padding: 3px 10px; border-radius: var(--radius-full); font-weight: 600; margin-bottom: 12px; }
.content-card h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.content-card h3 a:hover { color: var(--primary); }
.content-card .card-excerpt { font-size: 14px; color: var(--text-2); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; flex: 1; }
.card-meta { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--text-3); border-top: 1px solid var(--border); padding-top: 14px; }
.card-meta .read-link { color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; transition: gap 0.2s; }
.card-meta .read-link:hover { gap: 8px; }
.card-meta .read-link i { font-size: 12px; }

/* ===== CTA 条 ===== */
.cta-strip { background: var(--dark); border-radius: 20px; padding: 44px 48px; display: flex; align-items: center; justify-content: space-between; gap: 32px; margin: 56px 0; position: relative; overflow: hidden; }
.cta-strip::before { content: ""; position: absolute; right: -60px; top: -60px; width: 200px; height: 200px; border-radius: 50%; background: rgba(15,118,110,0.25); }
.cta-strip::after { content: ""; position: absolute; right: 40px; bottom: -80px; width: 160px; height: 160px; border-radius: 50%; background: rgba(245,158,11,0.12); }
.cta-strip .cta-content { position: relative; z-index: 1; }
.cta-strip .cta-tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 2px; color: var(--accent); margin-bottom: 10px; }
.cta-strip h3 { font-size: 26px; font-weight: 800; color: #fff; margin-bottom: 8px; line-height: 1.4; }
.cta-strip p { color: rgba(255,255,255,0.7); font-size: 15px; max-width: 480px; }
.cta-strip .btn { position: relative; z-index: 1; flex-shrink: 0; }

/* ===== FAQ ===== */
.faq-section { padding: 24px 0 56px; }
.faq-wrap { max-width: 860px; }
.faq-item { border-bottom: 1px solid var(--border); transition: border-color 0.2s; }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-item.active { border-color: var(--primary); }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 8px; background: transparent; cursor: pointer; text-align: left; font-size: 16px; font-weight: 600; color: var(--text); transition: color 0.2s; }
.faq-q:hover { color: var(--primary); }
.faq-q .icon { position: relative; width: 18px; height: 18px; flex-shrink: 0; }
.faq-q .icon::before, .faq-q .icon::after { content: ""; position: absolute; background: var(--text-3); border-radius: 2px; transition: all 0.3s ease; }
.faq-q .icon::before { width: 18px; height: 2px; top: 8px; left: 0; }
.faq-q .icon::after { width: 2px; height: 18px; left: 8px; top: 0; }
.faq-item.active .faq-q { color: var(--primary); }
.faq-item.active .faq-q .icon::before { background: var(--primary); }
.faq-item.active .faq-q .icon::after { background: var(--primary); transform: scaleY(0); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.3s ease; padding: 0 8px; }
.faq-item.active .faq-a { max-height: 300px; padding: 0 8px 24px; }
.faq-a p { font-size: 15px; color: var(--text-2); line-height: 1.8; }

/* ===== 页脚 ===== */
.site-footer { background: var(--dark); color: rgba(255,255,255,0.7); margin-top: 56px; }
.site-footer .container { padding-top: 48px; padding-bottom: 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 14px; }
.footer-brand .footer-logo i { color: var(--primary-light); }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 330px; }
.footer-brand .domain { display: inline-block; font-size: 13px; color: rgba(255,255,255,0.4); margin-top: 12px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a, .footer-col li { font-size: 14px; color: rgba(255,255,255,0.65); transition: color 0.2s; }
.footer-col a:hover { color: var(--primary-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.4); }

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  :root { --sidebar-w: 200px; }
  .method-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1023px) {
  body { margin-left: 0; }
  .side-nav { display: none; }
  .mobile-topbar { display: flex; }
  .main-content { padding: 0 24px; }
  .category-hero { margin: 76px 0 40px; }
  .category-hero .container { padding: 40px 32px; }
  .category-hero h1 { font-size: 34px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  .main-content { padding: 0 16px; }
  .category-hero { min-height: 360px; }
  .category-hero h1 { font-size: 28px; }
  .category-hero p { font-size: 15px; }
  .category-hero .container { padding: 32px 24px; }
  .hero-actions .btn { height: 44px; padding: 0 22px; font-size: 15px; }
  .intro-row { grid-template-columns: 1fr; gap: 20px; }
  .intro-row.reverse .intro-img { order: 0; }
  .intro-body h3 { font-size: 20px; }
  .method-section { margin: 32px 0; padding: 32px 16px; }
  .method-grid { grid-template-columns: 1fr; padding: 0; }
  .content-grid { grid-template-columns: 1fr; gap: 18px; }
  .cta-strip { flex-direction: column; padding: 36px 24px; align-items: flex-start; }
  .cta-strip h3 { font-size: 22px; }
  .section-title h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 6px; }
  .faq-q { font-size: 15px; padding: 18px 4px; }
}
@media (max-width: 520px) {
  .category-hero { border-radius: 16px; }
  .category-hero .container { padding: 28px 20px; }
  .hero-tag { font-size: 12px; }
  .category-hero h1 { font-size: 24px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .section-title { margin-bottom: 28px; }
  .content-card .card-body { padding: 16px 16px 14px; }
  .cta-strip { padding: 28px 20px; border-radius: 16px; }
}

/* roulang page: article */
:root {
      --primary: #0F766E;
      --primary-dark: #115E59;
      --primary-light: #14B8A6;
      --accent: #F59E0B;
      --accent-dark: #D97706;
      --bg: #F8F7F4;
      --card: #FFFFFF;
      --dark: #1C1917;
      --text: #1C1917;
      --text-muted: #57534E;
      --text-faint: #A8A29E;
      --border: rgba(28,25,23,0.08);
      --border-hover: rgba(28,25,23,0.12);
      --radius-lg: 16px;
      --radius-md: 10px;
      --radius-full: 999px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
      --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --sidebar-w: 220px;
      --space-section: 72px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-main);
      background: var(--bg);
      color: var(--text);
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease;
    }

    ul, ol {
      list-style: none;
    }

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

    input, textarea {
      font-family: inherit;
      border: none;
      outline: none;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 48px;
      padding: 0 28px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 16px;
      line-height: 48px;
      transition: all .2s ease;
      cursor: pointer;
      white-space: nowrap;
    }

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

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

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

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

    .btn-ghost:hover {
      background: rgba(15,118,110,.05);
    }

    .btn-amber {
      background: var(--accent);
      color: var(--dark);
    }

    .btn-amber:hover {
      background: var(--accent-dark);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

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

    .app-shell {
      display: flex;
      min-height: 100vh;
    }

    .sidebar {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: var(--sidebar-w);
      background: #fff;
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      padding: 0 16px 24px;
      z-index: 50;
      overflow-y: auto;
    }

    .side-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 20px 8px 16px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 12px;
    }

    .side-logo i {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #fff;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      flex-shrink: 0;
    }

    .logo-text {
      font-size: 17px;
      font-weight: 800;
      line-height: 1.2;
      color: var(--text);
    }

    .logo-sub {
      display: block;
      font-size: 11px;
      color: var(--text-faint);
      font-weight: 400;
      letter-spacing: .5px;
    }

    .side-nav {
      display: flex;
      flex-direction: column;
      gap: 4px;
      flex: 1;
    }

    .nav-item {
      display: flex;
      align-items: center;
      gap: 12px;
      height: 44px;
      padding: 0 12px;
      border-radius: 10px;
      color: var(--text-muted);
      font-weight: 500;
      font-size: 15px;
      border-left: 3px solid transparent;
      transition: all .2s ease;
    }

    .nav-item i {
      width: 18px;
      text-align: center;
      font-size: 14px;
      color: var(--text-faint);
    }

    .nav-item:hover {
      background: rgba(15,118,110,.05);
      color: var(--primary);
    }

    .nav-item.active {
      background: rgba(15,118,110,.08);
      color: var(--primary);
      border-left-color: var(--primary);
      font-weight: 600;
    }

    .nav-item.active i {
      color: var(--primary);
    }

    .side-footer {
      padding-top: 16px;
      border-top: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      gap: 6px;
      font-size: 12px;
      color: var(--text-faint);
    }

    .main-shell {
      margin-left: var(--sidebar-w);
      flex: 1;
      min-width: 0;
      display: flex;
      flex-direction: column;
    }

    .main-content {
      flex: 1;
      padding: 32px 0 0;
    }

    .mobile-topbar {
      display: none;
      position: sticky;
      top: 0;
      z-index: 60;
      background: #fff;
      border-bottom: 1px solid var(--border);
      height: 60px;
      align-items: center;
    }

    .mobile-topbar-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      width: 100%;
    }

    .mobile-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 16px;
      font-weight: 800;
      color: var(--text);
    }

    .mobile-logo i {
      width: 30px;
      height: 30px;
      background: var(--primary);
      color: #fff;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
    }

    .hamburger {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--text);
      border: 1px solid var(--border);
      transition: all .2s ease;
    }

    .hamburger:hover {
      background: rgba(15,118,110,.05);
      color: var(--primary);
    }

    .mobile-drawer {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: 280px;
      background: var(--dark);
      color: #fff;
      z-index: 100;
      transform: translateX(-100%);
      transition: transform .3s ease;
      padding: 20px 18px;
      display: flex;
      flex-direction: column;
    }

    .drawer-open {
      transform: translateX(0);
    }

    .drawer-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,.45);
      z-index: 90;
      opacity: 0;
      pointer-events: none;
      transition: opacity .3s ease;
    }

    .overlay-show {
      opacity: 1;
      pointer-events: auto;
    }

    .drawer-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(255,255,255,.08);
      margin-bottom: 12px;
    }

    .drawer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 16px;
      font-weight: 800;
      color: #fff;
    }

    .drawer-logo i {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #fff;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .drawer-close {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      color: rgba(255,255,255,.8);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
    }

    .drawer-close:hover {
      background: rgba(255,255,255,.08);
    }

    .drawer-nav {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .drawer-nav .nav-item {
      color: rgba(255,255,255,.75);
    }

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

    .drawer-nav .nav-item.active {
      background: rgba(255,255,255,.07);
      color: var(--primary-light);
      border-left-color: var(--primary-light);
    }

    .drawer-nav .nav-item i {
      color: inherit;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 6px;
      font-size: 14px;
      color: var(--text-faint);
      margin-bottom: 28px;
    }

    .breadcrumb a {
      color: var(--text-muted);
      transition: color .2s;
    }

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

    .breadcrumb .sep {
      color: #D6D3D1;
    }

    .breadcrumb .current {
      color: var(--text-muted);
      font-weight: 500;
      max-width: 280px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .article-detail {
      max-width: 860px;
      margin: 0 auto;
    }

    .article-head {
      margin-bottom: 28px;
    }

    .article-cat {
      display: inline-flex;
      align-items: center;
      background: rgba(15,118,110,.09);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      margin-bottom: 16px;
    }

    .article-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.35;
      color: var(--text);
      margin-bottom: 16px;
      letter-spacing: -0.3px;
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      color: var(--text-faint);
      font-size: 14px;
      border-bottom: 1px solid var(--border);
      padding-bottom: 20px;
    }

    .meta-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .meta-item i {
      color: var(--primary-light);
    }

    .article-content {
      max-width: 760px;
      margin: 0 auto;
    }

    .article-body {
      color: var(--text);
      font-size: 16px;
      line-height: 1.8;
      padding-top: 12px;
    }

    .article-body p {
      margin-bottom: 1.5em;
    }

    .article-body h2,
    .article-body h3,
    .article-body h4 {
      font-weight: 700;
      color: var(--text);
      margin: 1.6em 0 .7em;
      line-height: 1.4;
    }

    .article-body h2 {
      font-size: 26px;
    }

    .article-body h3 {
      font-size: 21px;
    }

    .article-body h4 {
      font-size: 18px;
    }

    .article-body ul,
    .article-body ol {
      padding-left: 1.5em;
      margin: 0 0 1.5em;
    }

    .article-body ul {
      list-style: disc;
    }

    .article-body ol {
      list-style: decimal;
    }

    .article-body li {
      margin-bottom: .5em;
    }

    .article-body blockquote {
      border-left: 4px solid var(--primary-light);
      background: rgba(20,184,166,.07);
      padding: 16px 20px;
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      color: var(--text-muted);
      margin: 1.5em 0;
    }

    .article-body img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      margin: 1.5em 0;
    }

    .article-body a {
      color: var(--primary);
      border-bottom: 1px solid rgba(15,118,110,.2);
    }

    .article-body a:hover {
      color: var(--primary-dark);
      border-color: var(--primary);
    }

    .article-body table {
      width: 100%;
      border-collapse: collapse;
      margin: 1.5em 0;
      font-size: 15px;
    }

    .article-body th,
    .article-body td {
      border: 1px solid var(--border);
      padding: 10px 12px;
      text-align: left;
    }

    .article-body th {
      background: #FAFAFA;
      font-weight: 600;
    }

    .article-body pre {
      background: var(--dark);
      color: #f5f5f4;
      padding: 16px 18px;
      border-radius: 12px;
      overflow-x: auto;
      font-size: 14px;
      line-height: 1.7;
      margin: 1.5em 0;
    }

    .article-body code {
      font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
      font-size: 13px;
    }

    .not-found-box {
      background: #fff;
      border: 1px dashed rgba(28,25,23,.18);
      border-radius: var(--radius-lg);
      padding: 64px 24px;
      text-align: center;
      max-width: 620px;
      margin: 40px auto 0;
    }

    .not-found-box .icon-wrap {
      width: 64px;
      height: 64px;
      border-radius: 50%;
      background: rgba(15,118,110,.08);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
    }

    .not-found-box .icon-wrap i {
      font-size: 26px;
      color: var(--primary);
    }

    .not-found-box h1 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .not-found-box .btn {
      margin-top: 10px;
    }

    .article-back {
      max-width: 760px;
      margin: 36px auto 8px;
      padding-top: 24px;
      border-top: 1px solid var(--border);
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
    }

    .article-back a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--text-muted);
      font-weight: 500;
      font-size: 15px;
    }

    .article-back a:hover {
      color: var(--primary);
    }

    .related-list {
      margin-top: 72px;
    }

    .section-head {
      display: flex;
      flex-direction: column;
      gap: 6px;
      margin-bottom: 28px;
    }

    .tag-kicker {
      width: 40px;
      height: 4px;
      background: var(--primary);
      border-radius: 2px;
      margin-bottom: 10px;
    }

    .section-head h2 {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.3;
    }

    .section-head p {
      color: var(--text-muted);
      font-size: 15px;
    }

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

    .related-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all .25s ease;
      box-shadow: var(--shadow-sm);
    }

    .related-card:hover {
      border-color: var(--border-hover);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .related-card:hover .related-cover img {
      transform: scale(1.03);
    }

    .related-cover {
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: rgba(15,118,110,.1);
    }

    .related-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .3s ease;
    }

    .related-info {
      padding: 18px 20px 20px;
    }

    .related-info h3 {
      font-size: 16px;
      font-weight: 600;
      line-height: 1.5;
      margin-bottom: 10px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .related-date {
      font-size: 13px;
      color: var(--text-faint);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .cta-section {
      margin-top: 72px;
      background: var(--dark);
      border-radius: 20px;
      padding: 48px 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      flex-wrap: wrap;
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      right: -80px;
      top: -80px;
      width: 240px;
      height: 240px;
      border-radius: 50%;
      background: rgba(15,118,110,.35);
    }

    .cta-section::after {
      content: "";
      position: absolute;
      right: 60px;
      bottom: -100px;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: rgba(245,158,11,.14);
    }

    .cta-copy {
      position: relative;
      z-index: 1;
      max-width: 520px;
    }

    .cta-eyebrow {
      display: inline-block;
      background: var(--accent);
      color: var(--dark);
      font-size: 13px;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      margin-bottom: 16px;
    }

    .cta-section h2 {
      color: #fff;
      font-size: 28px;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 10px;
    }

    .cta-section p {
      color: rgba(255,255,255,.7);
      font-size: 15px;
    }

    .cta-section .btn {
      position: relative;
      z-index: 1;
      flex-shrink: 0;
    }

    .site-footer {
      background: var(--dark);
      color: rgba(255,255,255,.72);
      padding: 56px 0 28px;
      margin-top: 64px;
    }

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

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-logo i {
      color: var(--primary-light);
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.75;
      color: rgba(255,255,255,.65);
      margin-bottom: 12px;
    }

    .domain {
      color: var(--text-faint);
      font-size: 13px;
      letter-spacing: .5px;
    }

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

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

    .footer-col a {
      color: rgba(255,255,255,.7);
      font-size: 14px;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,.08);
      margin-top: 40px;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      font-size: 13px;
      color: var(--text-faint);
    }

    @media (min-width: 1024px) and (max-width: 1199px) {
      :root {
        --sidebar-w: 200px;
      }
    }

    @media (max-width: 1023px) {
      .sidebar {
        display: none;
      }

      .mobile-topbar {
        display: flex;
      }

      .main-shell {
        margin-left: 0;
      }

      .main-content {
        padding-top: 0;
      }
    }

    @media (max-width: 767px) {
      :root {
        --space-section: 48px;
      }

      .container {
        padding: 0 16px;
      }

      .article-title {
        font-size: 26px;
      }

      .article-content {
        max-width: 100%;
      }

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

      .section-head h2 {
        font-size: 24px;
      }

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

      .cta-section h2 {
        font-size: 22px;
      }

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

      .footer-bottom {
        flex-direction: column;
      }

      .article-back {
        gap: 14px;
      }
    }

/* roulang page: category2 */
:root{
  --primary:#0F766E;
  --primary-dark:#115E59;
  --primary-light:#14B8A6;
  --accent:#F59E0B;
  --accent-dark:#D97706;
  --bg:#F8F7F4;
  --card:#FFFFFF;
  --ink:#1C1917;
  --ink-2:#57534E;
  --ink-3:#A8A29E;
  --border:rgba(28,25,23,.08);
  --border-hover:rgba(28,25,23,.12);
  --radius-lg:16px;
  --radius-md:10px;
  --radius-pill:999px;
  --shadow-sm:0 1px 3px rgba(0,0,0,.06);
  --shadow-hover:0 8px 24px rgba(0,0,0,.08);
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --sidebar-w:220px;
  --container-w:1200px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  min-height:100vh;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:15px;}
ul,ol{list-style:none;}
.container{width:100%;max-width:var(--container-w);margin:0 auto;padding:0 24px;}
.main-content{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}

/* App Shell Sidebar */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:960;
  padding:0 16px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:20px 4px 18px;border-bottom:1px solid var(--border);
}
.brand-icon{
  width:38px;height:38px;min-width:38px;border-radius:12px;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
}
.brand-text strong{
  display:block;font-size:18px;font-weight:800;line-height:1.3;color:var(--ink);
}
.brand-text small{
  display:block;font-size:12px;color:var(--ink-3);margin-top:2px;
  font-weight:400;
}
.side-nav{flex:1;padding:20px 0;}
.nav-item{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;margin-bottom:6px;
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:background .2s,color .2s,transform .2s;
  position:relative;
}
.nav-item i{width:20px;text-align:center;font-size:15px;color:var(--ink-3);transition:color .2s;}
.nav-item:hover{background:rgba(15,118,110,.05);color:var(--primary);}
.nav-item:hover i{color:var(--primary);}
.nav-item.active{
  background:rgba(15,118,110,.08);color:var(--primary);font-weight:600;
}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:9px;bottom:9px;width:3px;
  background:var(--primary);border-radius:0 4px 4px 0;
}
.nav-item.active i{color:var(--primary);}
.sidebar-foot{
  padding:16px 4px 20px;border-top:1px solid var(--border);
  font-size:12px;color:var(--ink-3);line-height:1.7;
}
.sidebar-foot .domain{display:block;color:var(--ink-3);font-size:12px;}
.sidebar-overlay{
  position:fixed;inset:0;background:rgba(28,25,23,.5);
  z-index:950;opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;
}
.sidebar-overlay.show{opacity:1;visibility:visible;}

/* Topbar */
.topbar{
  position:sticky;top:0;z-index:900;height:56px;
  background:#fff;border-bottom:1px solid var(--border);
  display:none;align-items:center;justify-content:space-between;
  padding:0 16px;
}
.menu-toggle{
  width:40px;height:40px;border:0;background:transparent;border-radius:10px;
  color:var(--ink);font-size:18px;display:flex;align-items:center;justify-content:center;
  transition:background .2s;
}
.menu-toggle:hover{background:#F5F5F4;}
.menu-toggle:focus{outline:2px solid var(--primary);outline-offset:2px;}
.topbar-brand{font-size:16px;font-weight:800;color:var(--ink);}
.topbar-phone{font-size:14px;font-weight:600;color:var(--primary);}
.topbar-phone i{margin-right:6px;}

/* Hero */
.hero{
  position:relative;
  padding:96px 0 88px;
  background:linear-gradient(90deg,rgba(28,25,23,.86) 0%,rgba(28,25,23,.62) 45%,rgba(28,25,23,.25) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color:#fff;
}
.hero .container{position:relative;z-index:1;}
.hero-tag{
  display:inline-block;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  color:#fff;font-size:13px;font-weight:500;
  padding:6px 16px;border-radius:999px;margin-bottom:22px;
  letter-spacing:.5px;
}
.hero-title{
  font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.5px;
  max-width:760px;margin-bottom:18px;
}
.hero-title .highlight{color:var(--primary-light);}
.hero-sub{
  font-size:18px;line-height:1.7;color:rgba(255,255,255,.86);
  max-width:620px;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:10px;
  font-size:16px;font-weight:600;border:1px solid transparent;
  transition:background .2s,transform .2s,box-shadow .2s,border-color .2s,color .2s;
}
.btn:focus{outline:2px solid var(--primary);outline-offset:2px;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px);}
.btn-ghost-light:active{transform:translateY(0);}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;}
.hero-tags span{
  font-size:13px;color:rgba(255,255,255,.88);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  padding:5px 14px;border-radius:999px;
}

/* Stats */
.stats-section{padding:40px 0 0;}
.stats-card{
  background:#fff;border-radius:16px;box-shadow:var(--shadow-sm);
  padding:30px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  border:1px solid var(--border);
}
.stat-item{text-align:center;padding:6px 8px;}
.stat-num{
  font-size:38px;font-weight:800;color:var(--primary);
  line-height:1.2;letter-spacing:-1px;
}
.stat-label{font-size:14px;color:var(--ink-2);margin-top:6px;}

/* Section base */
.section{padding:80px 0 0;}
.section-head{margin-bottom:42px;}
.section-tag{
  display:inline-block;font-size:13px;font-weight:600;color:var(--primary);
  background:rgba(15,118,110,.08);padding:5px 16px;border-radius:999px;
  margin-bottom:14px;letter-spacing:.4px;
}
.section-title{
  font-size:30px;font-weight:700;line-height:1.4;color:var(--ink);
  position:relative;padding-left:18px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  background:var(--primary);border-radius:4px;
}
.section-sub{color:var(--ink-2);font-size:16px;max-width:640px;margin-top:14px;}

/* Intro */
.intro-section{padding:80px 0 0;}
.intro-block{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  margin-bottom:64px;
}
.intro-media{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-hover);}
.intro-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.intro-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(15,118,110,.08),rgba(245,158,11,.05));
}
.intro-content h3{
  font-size:24px;font-weight:700;line-height:1.4;margin-bottom:16px;
}
.intro-content p{color:var(--ink-2);margin-bottom:18px;font-size:16px;}
.intro-list li{
  display:flex;align-items:flex-start;gap:12px;
  color:var(--ink-2);margin-bottom:12px;line-height:1.7;
}
.intro-list i{color:var(--primary);margin-top:5px;font-size:15px;}
@media (min-width:768px){
  .intro-block:nth-child(2) .intro-media{order:2;}
  .intro-block:nth-child(2) .intro-content{order:1;}
}

/* List cards */
.insight-section{padding:80px 0 0;}
.list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.list-card{
  background:#fff;border:1px solid var(--border);border-radius:16px;
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow-sm);transition:box-shadow .3s,transform .3s;
}
.list-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);}
.list-card-media{overflow:hidden;background:rgba(15,118,110,.08);aspect-ratio:16/9;}
.list-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.list-card:hover .list-card-media img{transform:scale(1.03);}
.list-card-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.list-tag{
  align-self:flex-start;
  font-size:12px;font-weight:600;color:var(--primary);
  background:rgba(15,118,110,.08);padding:4px 12px;border-radius:999px;
  margin-bottom:12px;
}
.list-title{font-size:17px;font-weight:700;line-height:1.45;color:var(--ink);margin-bottom:8px;}
.list-excerpt{
  font-size:14px;color:var(--ink-2);line-height:1.65;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.list-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}
.read-link{color:var(--primary);font-weight:600;font-size:14px;}
.read-link i{transition:transform .2s;}
.read-link:hover i{transform:translateX(3px);}

/* CTA band */
.cta-band{
  margin-top:80px;
  background:var(--ink);color:#fff;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;
  border-radius:50%;border:38px solid rgba(15,118,110,.45);
}
.cta-band::after{
  content:"";position:absolute;right:120px;bottom:-110px;width:180px;height:180px;
  border-radius:50%;border:24px solid rgba(245,158,11,.18);
}
.cta-band .container{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding-top:56px;padding-bottom:56px;flex-wrap:wrap;
}
.cta-band h2{font-size:30px;font-weight:700;line-height:1.4;}
.cta-band p{color:rgba(255,255,255,.75);margin-top:10px;max-width:480px;font-size:15px;}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,158,11,.25);}
.btn-accent:active{transform:translateY(0);}

/* FAQ */
.faq-section{padding:80px 0 0;}
.faq-list{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:first-child{border-top:1px solid var(--border);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;background:transparent;border:0;text-align:left;
  padding:22px 4px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s;
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  width:28px;height:28px;min-width:28px;border-radius:50%;
  border:1px solid var(--border);display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:14px;transition:transform .25s,background .25s;
}
.faq-item.active .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;border-color:var(--primary);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  color:var(--ink-2);font-size:15px;line-height:1.8;padding:0 4px;
}
.faq-item.active .faq-a{max-height:320px;padding-bottom:22px;}

/* Contact */
.contact-section{padding:80px 0 0;}
.contact-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:28px;}
.contact-info{
  background:var(--primary);border-radius:16px;color:#fff;padding:36px;
  position:relative;overflow:hidden;
}
.contact-info::after{
  content:"";position:absolute;right:-60px;bottom:-60px;width:160px;height:160px;
  border-radius:50%;border:22px solid rgba(255,255,255,.08);
}
.contact-info h3{font-size:22px;font-weight:700;margin-bottom:14px;position:relative;z-index:1;}
.contact-info p{color:rgba(255,255,255,.8);font-size:15px;line-height:1.8;margin-bottom:24px;position:relative;z-index:1;}
.contact-detail{margin-bottom:14px;display:flex;align-items:center;gap:12px;color:#fff;position:relative;z-index:1;font-size:15px;}
.contact-detail i{width:34px;height:34px;min-width:34px;border-radius:10px;background:rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;font-size:14px;}
.contact-form{
  background:#fff;border-radius:16px;padding:36px;
  border:1px solid var(--border);box-shadow:var(--shadow-sm);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px;}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;}
.form-group label small{color:#DC2626;}
.form-group input,.form-group textarea{
  width:100%;height:44px;border:1px solid #E7E5E4;border-radius:10px;
  padding:0 14px;background:#fff;color:var(--ink);
  transition:border-color .2s,box-shadow .2s;
}
.form-group textarea{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.6;}
.form-group input:focus,.form-group textarea:focus{
  outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(15,118,110,.15);
}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--ink-3);}
.form-msg{margin-top:14px;font-size:14px;font-weight:500;min-height:22px;}
.form-msg.success{color:var(--primary-dark);}
.form-msg.error{color:#DC2626;}
.btn-block{width:100%;margin-top:6px;}

/* Footer */
.site-footer{background:var(--ink);color:#D6D3D1;margin-top:80px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1fr;
  gap:36px;padding:56px 0 36px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-logo{font-size:18px;font-weight:800;color:#fff;margin-bottom:14px;}
.footer-logo i{color:var(--primary-light);margin-right:6px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);max-width:320px;}
.footer-brand .domain{display:inline-block;margin-top:12px;font-size:13px;color:rgba(255,255,255,.4);}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;font-size:14px;}
.footer-col a{color:#D6D3D1;transition:color .2s;}
.footer-col a:hover{color:var(--primary-light);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:22px 0;font-size:13px;color:rgba(255,255,255,.45);
}

/* Responsive */
@media (min-width:1200px){
  :root{--sidebar-w:220px;}
}
@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar-w:200px;}
}
@media (max-width:1023px){
  :root{--sidebar-w:0px;}
  .main-content{margin-left:0;}
  .sidebar{
    transform:translateX(-100%);
    transition:transform .3s ease;
    background:var(--ink);color:#fff;padding:0 16px;
  }
  .sidebar.open{transform:translateX(0);box-shadow:0 0 50px rgba(0,0,0,.35);}
  .sidebar .brand{border-color:rgba(255,255,255,.1);}
  .sidebar .brand-text strong{color:#fff;}
  .sidebar .brand-text small{color:rgba(255,255,255,.5);}
  .sidebar .nav-item{color:rgba(255,255,255,.72);}
  .sidebar .nav-item i{color:rgba(255,255,255,.5);}
  .sidebar .nav-item:hover{background:rgba(255,255,255,.06);color:var(--primary-light);}
  .sidebar .nav-item.active{
    background:rgba(20,184,166,.12);color:var(--primary-light);
  }
  .sidebar .nav-item.active::before{background:var(--primary-light);}
  .sidebar .nav-item.active i{color:var(--primary-light);}
  .sidebar .sidebar-foot{border-color:rgba(255,255,255,.1);color:rgba(255,255,255,.45);}
  .sidebar .sidebar-foot .domain{color:rgba(255,255,255,.35);}
  .topbar{display:flex;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .hero{padding:64px 0 56px;}
  .hero-title{font-size:32px;line-height:1.3;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;max-width:320px;}
  .stats-card{grid-template-columns:repeat(2,1fr);gap:16px;padding:22px;}
  .stat-num{font-size:30px;}
  .section{padding:56px 0 0;}
  .section-title{font-size:24px;}
  .intro-block{grid-template-columns:1fr;gap:28px;margin-bottom:48px;}
  .intro-content h3{font-size:20px;}
  .list-grid{grid-template-columns:1fr;gap:20px;}
  .cta-band .container{flex-direction:column;align-items:flex-start;padding-top:44px;padding-bottom:44px;}
  .cta-band h2{font-size:24px;}
  .contact-grid{grid-template-columns:1fr;}
  .contact-info,.contact-form{padding:26px;}
  .form-row{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-top:44px;}
  .footer-brand{grid-column:1/-1;}
  .footer-bottom{flex-direction:column;text-align:center;justify-content:center;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;}
  .topbar-phone{font-size:13px;}
  .hero-tags span{font-size:12px;}
  .list-title{font-size:16px;}
}