/* roulang page: index */
:root{
  --c-brand-900:#0c3b3f;
  --c-brand-700:#0f5d64;
  --c-brand-600:#0f7d86;
  --c-brand-500:#20a3ad;
  --c-brand-100:#e7f5f6;
  --c-accent-500:#f97316;
  --c-accent-100:#fff1e3;
  --c-good:#15a06a;
  --c-ink:#12232b;
  --c-ink-2:#5d7178;
  --c-line:#e2eaec;
  --c-bg:#f6f9fa;
  --c-surface:#ffffff;
  --r-card:16px;
  --r-sub:12px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(18,35,43,.05);
  --sh-2:0 4px 16px rgba(15,125,134,.10);
  --sh-3:0 12px 28px rgba(15,125,134,.16);

  --bs-primary:#0f7d86;
  --bs-primary-rgb:15,125,134;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",sans-serif;
  --bs-body-color:#12232b;
  --bs-body-bg:#f6f9fa;
  --bs-border-color:#e2eaec;
  --bs-border-radius:10px;
  --bs-link-color:#0f7d86;
  --bs-link-hover-color:#0b6067;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;color:var(--c-ink);letter-spacing:0;}
p{margin:0;}
a{color:var(--c-brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-brand-700);}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-head{margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--c-brand-600);
  background:var(--c-brand-100);
  padding:4px 14px;
  border-radius:999px;
  margin-bottom:14px;
}
.section-head h2{font-size:32px;}
.section-head .lead{
  margin-top:12px;
  font-size:15px;
  color:var(--c-ink-2);
  max-width:720px;
}
.head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.head-link{
  font-size:14px;
  font-weight:600;
  color:var(--c-brand-600);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.head-link i{font-size:12px;transition:transform .2s ease;}
.head-link:hover i{transform:translateX(3px);}

/* ---------- 按钮 ---------- */
.btn-c{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .2s ease;
  white-space:nowrap;
}
.btn-c:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;}
.btn-primary-c{background:var(--c-brand-600);color:#fff;box-shadow:var(--sh-1);}
.btn-primary-c:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary-c:active{transform:translateY(0);background:var(--c-brand-900);}
.btn-ghost-c{background:#fff;color:var(--c-brand-600);border-color:var(--c-brand-500);}
.btn-ghost-c:hover{background:var(--c-brand-100);color:var(--c-brand-700);transform:translateY(-1px);}
.btn-ghost-c:active{background:#d8ecEE;transform:translateY(0);}
.btn-accent-c{background:var(--c-accent-500);color:#fff;}
.btn-accent-c:hover{background:#e2660c;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent-c:active{transform:translateY(0);}
.btn-c[disabled],.btn-c.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm-c{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 徽章 ---------- */
.badge-cat{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:var(--c-brand-700);
  background:var(--c-brand-100);
  padding:3px 12px;
  border-radius:999px;
}
.badge-hot{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:#c2410c;
  background:var(--c-accent-100);
  padding:3px 12px;
  border-radius:999px;
}
.badge-good{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:#0f7a52;
  background:#e6f6ef;
  padding:3px 12px;
  border-radius:999px;
}

/* ---------- 公告条 ---------- */
.promo-bar{
  background:var(--c-accent-100);
  border-bottom:1px solid #f7dcc4;
  font-size:13px;
  color:#9a3d05;
}
.promo-inner{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:9px 48px 9px 24px;
  position:relative;
  position:relative;
  max-width:1200px;
  margin:0 auto;
}
.promo-inner i{font-size:13px;}
.promo-close{
  position:absolute;
  right:16px;
  top:50%;
  transform:translateY(-50%);
  background:none;
  border:none;
  color:#9a3d05;
  font-size:15px;
  cursor:pointer;
  padding:4px 6px;
  border-radius:6px;
  transition:background .2s ease;
}
.promo-close:hover{background:rgba(154,61,5,.1);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:900;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  box-shadow:0 4px 18px rgba(15,125,134,.10);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:76px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--c-brand-600),var(--c-brand-500));
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  box-shadow:var(--sh-2);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--c-ink);}
.brand-text span{font-size:11px;color:var(--c-ink-2);}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:12px;
  flex:1;
}
.main-nav a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--c-ink);
  padding:8px 14px;
  border-radius:var(--r-btn);
  transition:all .2s ease;
  white-space:nowrap;
}
.main-nav a:hover{background:var(--c-brand-100);color:var(--c-brand-700);}
.main-nav a.active{color:var(--c-brand-700);font-weight:600;background:var(--c-brand-100);}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--c-brand-600);
}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink);
  font-size:18px;
  cursor:pointer;
}
.nav-toggle:hover{background:var(--c-brand-100);border-color:var(--c-brand-500);color:var(--c-brand-700);}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(12,59,63,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:990;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;
  right:0;
  width:320px;
  max-width:86vw;
  height:100%;
  background:#fff;
  z-index:1000;
  transform:translateX(102%);
  transition:transform .3s ease;
  display:flex;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
}
.mobile-drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{background:none;border:none;font-size:20px;color:var(--c-ink-2);cursor:pointer;}
.drawer-nav a{
  display:block;
  padding:14px 4px;
  font-size:15px;
  color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.active{color:var(--c-brand-700);font-weight:600;}
.drawer-cta{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.drawer-cta .btn-c{width:100%;}
.drawer-foot{
  margin-top:auto;
  padding-top:20px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-ink-2);
  line-height:1.9;
}
.drawer-foot strong{color:var(--c-ink);display:block;font-size:14px;margin-bottom:4px;}

/* ---------- Hero ---------- */
.hero{
  padding:72px 0 96px;
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(32,163,173,.13),transparent 62%),
    radial-gradient(680px 320px at 4% 8%,rgba(249,115,22,.07),transparent 60%),
    var(--c-bg);
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.hero-left .badge-hot{margin-bottom:18px;}
.hero h1{
  font-size:44px;
  line-height:1.28;
  margin-bottom:18px;
}
.hero h1 em{
  font-style:normal;
  color:var(--c-brand-600);
  position:relative;
}
.hero h1 em::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:4px;
  height:8px;
  border-radius:4px;
  background:rgba(32,163,173,.18);
  z-index:-1;
}
.hero-sub{
  font-size:16px;
  color:var(--c-ink-2);
  max-width:560px;
  margin-bottom:22px;
}
.hero-points{display:flex;flex-direction:column;gap:10px;margin-bottom:26px;}
.hero-points li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:15px;
  color:var(--c-ink);
}
.hero-points i{
  width:22px;height:22px;border-radius:7px;
  background:var(--c-brand-100);
  color:var(--c-brand-600);
  font-size:11px;
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap:8px 22px;
  font-size:13px;
  color:var(--c-ink-2);
}
.hero-trust span{display:inline-flex;align-items:center;gap:6px;}
.hero-trust i{color:var(--c-good);font-size:12px;}

.hero-visual{
  position:relative;
  border-radius:var(--r-card);
  min-height:420px;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(12,59,63,.05),rgba(12,59,63,.34));
}
.hero-card{
  position:absolute;
  left:22px;right:22px;bottom:22px;
  background:#fff;
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-3);
  z-index:2;
}
.hero-card h3{font-size:17px;margin-bottom:4px;}
.hero-card p{font-size:13px;color:var(--c-ink-2);margin-bottom:14px;}
.hero-card .field{margin-bottom:10px;}
.hero-card label{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:5px;font-weight:500;}
.hero-card input,
.hero-card select{
  width:100%;
  height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  padding:0 13px;
  font-size:14px;
  color:var(--c-ink);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.hero-card input::placeholder{color:#94a6ad;}
.hero-card input:focus,.hero-card select:focus{
  outline:none;
  border-color:var(--c-brand-600);
  box-shadow:0 0 0 3px rgba(15,125,134,.14);
}
.hero-card .btn-c{width:100%;height:44px;}

/* ---------- 信任数据条 ---------- */
.stats-band{
  background:#fff;
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding:38px 0;
}
.stat-item{text-align:center;position:relative;}
.stat-item + .stat-item::before{
  content:"";
  position:absolute;
  left:-12px;top:12px;bottom:12px;
  width:1px;
  background:var(--c-line);
}
.stat-num{
  font-size:32px;
  font-weight:700;
  color:var(--c-brand-600);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stat-num small{font-size:16px;margin-left:2px;font-weight:600;}
.stat-label{font-size:13px;color:var(--c-ink-2);margin-top:6px;}

/* ---------- 优惠阶梯 ---------- */
.ladder{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  align-items:end;
}
.ladder-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  position:relative;
}
.ladder-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#bfe4e7;}
.ladder-card .step-no{
  font-size:12px;
  font-weight:700;
  color:var(--c-brand-600);
  font-variant-numeric:tabular-nums;
}
.ladder-card h3{font-size:19px;margin:8px 0 4px;}
.ladder-card .gate{font-size:13px;color:var(--c-ink-2);margin-bottom:16px;}
.ladder-card ul{display:flex;flex-direction:column;gap:9px;}
.ladder-card li{
  font-size:14px;
  color:var(--c-ink-2);
  display:flex;
  gap:8px;
  align-items:flex-start;
  line-height:1.7;
}
.ladder-card li i{color:var(--c-brand-500);font-size:12px;margin-top:6px;flex-shrink:0;}
.ladder-card .save-tag{
  margin-top:18px;
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:#0f7a52;
  background:#e6f6ef;
  padding:4px 12px;
  border-radius:999px;
}
.ladder-1{min-height:280px;}
.ladder-2{min-height:320px;}
.ladder-3{min-height:360px;}
.ladder-4{min-height:400px;border-color:#bfe4e7;box-shadow:var(--sh-2);}
.ladder-4::before{
  content:"最受欢迎";
  position:absolute;
  top:-12px;right:18px;
  background:var(--c-accent-500);
  color:#fff;
  font-size:12px;
  font-weight:600;
  padding:4px 12px;
  border-radius:999px;
  box-shadow:0 6px 14px rgba(249,115,22,.28);
}

/* ---------- 套餐对比 ---------- */
.compare-wrap{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.compare-scroll{overflow-x:auto;}
.compare-table{
  width:100%;
  min-width:860px;
  border-collapse:collapse;
  font-size:14px;
}
.compare-table th,
.compare-table td{
  padding:15px 18px;
  border-bottom:1px solid var(--c-line);
  text-align:center;
  vertical-align:middle;
}
.compare-table thead th{
  position:sticky;
  top:0;
  background:#fff;
  z-index:3;
  border-bottom:1px solid var(--c-line);
  padding-top:22px;
  padding-bottom:18px;
}
.compare-table tbody th{
  text-align:left;
  font-weight:500;
  color:var(--c-ink-2);
  background:#fbfdfd;
  width:230px;
}
.plan-name{font-size:16px;font-weight:700;color:var(--c-ink);display:block;margin-bottom:8px;}
.plan-price{
  font-size:28px;
  font-weight:700;
  color:var(--c-brand-600);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.plan-price small{font-size:13px;color:var(--c-ink-2);font-weight:500;margin-left:2px;}
.plan-old{
  display:block;
  font-size:13px;
  color:#94a6ad;
  text-decoration:line-through;
  margin-top:4px;
}
.plan-save{display:inline-block;margin-top:8px;font-size:12px;font-weight:600;color:#0f7a52;background:#e6f6ef;padding:3px 10px;border-radius:999px;}
.col-recommend{background:var(--c-brand-100);position:relative;}
.compare-table thead .col-recommend{
  background:var(--c-brand-100);
  box-shadow:inset 2px 0 0 var(--c-brand-600),inset -2px 0 0 var(--c-brand-600);
}
.compare-table thead .col-recommend::before{
  content:"推荐";
  position:absolute;
  top:6px;left:50%;
  transform:translateX(-50%);
  font-size:11px;
  font-weight:600;
  color:#fff;
  background:var(--c-brand-600);
  padding:2px 10px;
  border-radius:999px;
}
.compare-table tbody td.col-recommend{
  box-shadow:inset 2px 0 0 var(--c-brand-600),inset -2px 0 0 var(--c-brand-600);
  font-weight:600;
  color:var(--c-brand-700);
}
.compare-table tbody tr:last-child td,
.compare-table tbody tr:last-child th{border-bottom:none;}
.ic-yes{color:var(--c-good);font-size:14px;}
.ic-no{color:#b9c6cb;font-size:14px;}
.scroll-hint{display:none;font-size:12px;color:var(--c-ink-2);padding:10px 16px 0;}

/* ---------- 限时入口 ---------- */
.limited{
  background:var(--c-brand-900);
  border-radius:var(--r-card);
  padding:34px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  color:#fff;
  box-shadow:var(--sh-2);
}
.limited-left{flex:1 1 380px;}
.limited-left h2{font-size:26px;color:#fff;margin-bottom:8px;}
.limited-left p{font-size:14px;color:rgba(255,255,255,.72);}
.countdown{display:flex;gap:10px;margin-top:18px;}
.cd-box{
  width:56px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-sub);
  text-align:center;
  padding:8px 0;
}
.cd-box b{
  display:block;
  font-size:22px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.cd-box span{font-size:11px;color:rgba(255,255,255,.6);}
.limited-right{flex:0 0 320px;max-width:100%;}
.progress-label{
  display:flex;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.78);
  margin-bottom:8px;
}
.progress-track{
  height:8px;
  background:rgba(255,255,255,.16);
  border-radius:999px;
  overflow:hidden;
  margin-bottom:18px;
}
.progress-fill{
  height:100%;
  width:83%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--c-brand-500),var(--c-accent-500));
}
.limited-right .btn-c{width:100%;}

/* ---------- 咨询表单 ---------- */
.contact-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:32px;
  align-items:start;
}
.form-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-2);
}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .hint{font-size:13px;color:var(--c-ink-2);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:14px;
  font-weight:500;
  color:var(--c-ink);
  margin-bottom:6px;
}
.field .req{color:var(--c-brand-600);margin-right:3px;}
.field input,
.field select,
.field textarea{
  width:100%;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  font-size:14px;
  color:var(--c-ink);
  background:#fff;
  padding:0 14px;
  height:46px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input::placeholder,
.field textarea::placeholder{color:#94a6ad;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--c-brand-600);
  box-shadow:0 0 0 3px rgba(15,125,134,.14);
}
.check-line{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:13px;
  color:var(--c-ink-2);
  margin-bottom:18px;
  line-height:1.7;
}
.check-line input{margin-top:4px;width:15px;height:15px;accent-color:var(--c-brand-600);}
.form-card .btn-c{width:100%;}

.contact-side{display:flex;flex-direction:column;gap:16px;}
.promise-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
}
.promise-card h3{font-size:18px;margin-bottom:16px;}
.promise-card li{
  display:flex;
  gap:12px;
  padding:10px 0;
  border-bottom:1px dashed var(--c-line);
  align-items:flex-start;
}
.promise-card li:last-child{border-bottom:none;padding-bottom:0;}
.promise-icon{
  width:30px;height:30px;
  border-radius:9px;
  background:var(--c-brand-100);
  color:var(--c-brand-600);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;
  flex-shrink:0;
}
.promise-card li b{display:block;font-size:15px;font-weight:600;color:var(--c-ink);}
.promise-card li p{font-size:13px;color:var(--c-ink-2);line-height:1.7;}
.contact-info{
  background:var(--c-brand-100);
  border-radius:var(--r-card);
  padding:24px;
  border:1px solid #d3ebed;
}
.contact-info h4{font-size:16px;margin-bottom:12px;}
.contact-info .row-line{
  font-size:14px;
  color:var(--c-ink);
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 0;
}
.contact-info .row-line i{color:var(--c-brand-600);width:16px;text-align:center;}

/* ---------- 最新信息 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:6fr 6fr;
  gap:24px;
}
.news-main{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-main:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#bfe4e7;}
.news-main-link{display:block;color:inherit;}
.news-main-thumb{aspect-ratio:16/9;background:var(--c-brand-100);overflow:hidden;}
.news-main-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-main:hover .news-main-thumb img{transform:scale(1.04);}
.news-main-body{padding:24px;}
.news-main-body h3{
  font-size:21px;
  margin:12px 0 10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-desc{
  font-size:14px;
  color:var(--c-ink-2);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.news-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--c-ink-2);
  border-top:1px solid var(--c-line);
  padding-top:14px;
}
.news-more{color:var(--c-brand-600);font-weight:600;}
.news-side{display:flex;flex-direction:column;gap:16px;}
.mini-card{
  display:grid;
  grid-template-columns:150px 1fr;
  gap:16px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-sub);
  padding:14px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  color:inherit;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#bfe4e7;}
.mini-thumb{
  aspect-ratio:16/9;
  border-radius:9px;
  overflow:hidden;
  background:var(--c-brand-100);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;}
.mini-body h4{
  font-size:15px;
  font-weight:600;
  line-height:1.55;
  margin:6px 0 8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.mini-meta{font-size:12px;color:var(--c-ink-2);display:flex;gap:12px;}
.news-empty{
  background:var(--c-brand-100);
  border:1px dashed #b8dfe2;
  border-radius:var(--r-card);
  min-height:240px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  text-align:center;
  padding:32px;
}
.news-empty i{font-size:30px;color:var(--c-brand-500);}
.news-empty p{font-size:14px;color:var(--c-ink-2);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 24px;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-sub);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
  position:relative;
  height:fit-content;
}
.faq-item:hover{border-color:#bfe4e7;box-shadow:var(--sh-1);}
.faq-item.open{border-color:#bfe4e7;box-shadow:var(--sh-2);}
.faq-item.open::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--c-brand-600);
}
.faq-q{
  width:100%;
  background:none;
  border:none;
  text-align:left;
  padding:18px 20px;
  font-size:15px;
  font-weight:600;
  color:var(--c-ink);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  line-height:1.6;
}
.faq-q:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:-2px;}
.faq-icon{
  width:22px;height:22px;
  border-radius:7px;
  background:var(--c-brand-100);
  color:var(--c-brand-600);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;
  flex-shrink:0;
  transition:transform .25s ease,background .25s ease;
}
.faq-item.open .faq-icon{transform:rotate(135deg);background:var(--c-brand-600);color:#fff;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 20px 20px;
  font-size:14px;
  color:var(--c-ink-2);
  line-height:1.85;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-brand-900);
  color:rgba(255,255,255,.72);
  margin-top:0;
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{color:#fff;font-size:17px;}
.footer-brand span{color:rgba(255,255,255,.6);font-size:11px;display:block;}
.footer-col p{font-size:13px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col ul a:hover{color:#fff;}
.footer-contact-line{font-size:14px;color:rgba(255,255,255,.72);display:flex;gap:10px;padding:5px 0;}
.footer-contact-line i{color:var(--c-brand-500);width:16px;text-align:center;margin-top:5px;}
.qr-box{
  width:96px;height:96px;
  border-radius:var(--r-sub);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.5);
  font-size:12px;
  margin-top:12px;
  text-align:center;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 24px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container-x{padding:0 20px;}
  .hero h1{font-size:38px;}
  .ladder{grid-template-columns:repeat(2,1fr);align-items:stretch;}
  .ladder-1,.ladder-2,.ladder-3,.ladder-4{min-height:auto;}
}
@media (max-width:992px){
  .main-nav,.header-actions{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto;}
  .header-inner{height:68px;}
  .hero{padding:52px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{min-height:340px;}
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 16px;}
  .stat-item:nth-child(3)::before{display:none;}
  .contact-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .faq-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .limited{padding:28px;gap:24px;}
  .limited-right{flex:1 1 100%;}
  .section-head h2{font-size:26px;}
}
@media (max-width:768px){
  body{font-size:15px;line-height:1.8;}
  .hero h1{font-size:31px;}
  .hero-sub{font-size:15px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:23px;}
  .ladder{grid-template-columns:1fr;}
  .compare-table{min-width:720px;}
  .scroll-hint{display:block;}
  .news-main-body{padding:20px;}
  .mini-card{grid-template-columns:118px 1fr;}
  .limited-left h2{font-size:22px;}
  .cd-box{width:48px;}
  .cd-box b{font-size:19px;}
  .footer-grid{grid-template-columns:1fr;}
  .form-card{padding:20px;}
}
@media (max-width:520px){
  .container-x{padding:0 16px;}
  .hero h1{font-size:28px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn-c{width:100%;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat-num{font-size:26px;}
  .mini-card{grid-template-columns:1fr;}
  .mini-thumb{aspect-ratio:16/9;}
  .promo-inner{font-size:12px;text-align:left;}
  .brand-text strong{font-size:15px;}
}

/* roulang page: category1 */
:root{
  --c-brand-900:#0c3a3c;
  --c-brand-700:#12666b;
  --c-brand-600:#1a8a8f;
  --c-brand-500:#33a8ad;
  --c-brand-100:#e6f5f6;
  --c-accent-500:#f2802a;
  --c-accent-100:#fff2e4;
  --c-good:#25a35a;
  --c-ink:#17282b;
  --c-ink-2:#5c7176;
  --c-line:#e3eaeb;
  --c-bg:#f7fafb;
  --c-surface:#ffffff;
  --r-card:16px;
  --r-sub:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(12,58,60,.06);
  --sh-2:0 4px 16px rgba(16,90,94,.09);
  --sh-3:0 12px 28px rgba(16,90,94,.16);
  --bs-primary:#1a8a8f;
  --bs-primary-rgb:26,138,143;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  --bs-body-color:#17282b;
  --bs-border-color:#e3eaeb;
  --bs-border-radius:12px;
  --bs-link-color:#1a8a8f;
  --bs-link-hover-color:#12666b;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--c-brand-600);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--c-brand-700);}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;color:var(--c-ink);letter-spacing:0;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.container-x{max-width:1280px;}}

/* ============ 按钮 ============ */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;background:transparent;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary-c{background:var(--c-brand-600);color:#fff;box-shadow:var(--sh-1);}
.btn-primary-c:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-ghost-c{background:#fff;border-color:var(--c-brand-600);color:var(--c-brand-700);}
.btn-ghost-c:hover{background:var(--c-brand-100);color:var(--c-brand-700);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent-c{background:var(--c-accent-500);color:#fff;box-shadow:var(--sh-1);}
.btn-accent-c:hover{background:#dd6f1d;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-c:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-c[disabled],.btn-c.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-sm-c{height:40px;padding:0 16px;font-size:14px;}
.btn-lg-c{height:52px;padding:0 28px;font-size:16px;}
.btn-block-c{width:100%;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-2);background:rgba(255,255,255,.94);}
.header-inner{display:flex;align-items:center;gap:28px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;color:var(--c-ink);}
.brand-mark{
  width:42px;height:42px;border-radius:12px;
  background:var(--c-brand-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;box-shadow:var(--sh-2);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--c-ink);}
.brand-text span{font-size:12.5px;color:var(--c-ink-2);}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:color .18s ease,background-color .18s ease;
}
.main-nav a:hover{color:var(--c-brand-700);background:var(--c-brand-100);}
.main-nav a.active{color:var(--c-brand-700);font-weight:600;background:transparent;}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;background:var(--c-brand-600);
}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--c-brand-100);border-color:var(--c-brand-500);}
.drawer-extra{display:none;}

/* ============ 内页小 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:46px 0 52px;
  background:
    radial-gradient(1100px 280px at 88% -20%, rgba(26,138,143,.14), rgba(26,138,143,0) 70%),
    linear-gradient(180deg,#f1f9fa 0%, #f7fafb 100%);
  border-bottom:1px solid var(--c-line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(26,138,143,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,138,143,.07) 1px, transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
}
.page-hero .container-x{position:relative;z-index:1;}
.breadcrumb-x{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-ink-2);margin-bottom:20px;
}
.breadcrumb-x a{color:var(--c-ink-2);}
.breadcrumb-x a:hover{color:var(--c-brand-600);}
.breadcrumb-x .sep{color:#a9bbbe;}
.breadcrumb-x .current{color:var(--c-ink);font-weight:600;}
.hero-title{font-size:44px;line-height:1.28;font-weight:700;margin-bottom:14px;max-width:900px;}
.hero-lead{font-size:17px;color:var(--c-ink-2);max-width:640px;margin-bottom:24px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--c-ink-2);}
.hero-meta i{color:var(--c-brand-600);}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:32px;line-height:1.32;margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--c-ink-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-brand-700);
  background:var(--c-brand-100);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow i{font-size:12px;}

/* ============ 图文主区块 ============ */
.grid-split{display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center;}
.intro-copy h2{font-size:32px;line-height:1.32;margin-bottom:16px;}
.intro-copy p{color:var(--c-ink-2);font-size:16px;}
.intro-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.intro-visual{position:relative;}
.media-16x9{
  position:relative;aspect-ratio:16/9;border-radius:var(--r-sub);overflow:hidden;
  background:var(--c-brand-100);box-shadow:var(--sh-2);
}
.media-4x3{
  position:relative;aspect-ratio:4/3;border-radius:var(--r-sub);overflow:hidden;
  background:var(--c-brand-100);box-shadow:var(--sh-2);
}
.media-16x9 img,.media-4x3 img{width:100%;height:100%;object-fit:cover;}
.point-stack{
  position:relative;z-index:2;display:grid;gap:12px;
  margin:-38px 0 0 26px;
}
.point-chip{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sub);
  padding:14px 16px;box-shadow:var(--sh-2);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.point-chip:hover{transform:translateY(-2px);border-color:#bfe3e5;box-shadow:var(--sh-3);}
.point-chip .ico{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  background:var(--c-brand-100);color:var(--c-brand-700);
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
}
.point-chip strong{display:block;font-size:15px;font-weight:600;color:var(--c-ink);margin-bottom:2px;}
.point-chip em{font-style:normal;font-size:13.5px;color:var(--c-ink-2);line-height:1.6;}

/* ============ 交替图文块 ============ */
.alt-block{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:44px 0;
}
.alt-block + .alt-block{border-top:1px solid var(--c-line);}
.alt-block.reverse .alt-figure{order:2;}
.alt-copy h3{font-size:22px;margin:14px 0 12px;}
.alt-copy p{color:var(--c-ink-2);font-size:15.5px;}
.check-list{display:grid;gap:10px;margin-top:16px;}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--c-ink-2);}
.check-list i{color:var(--c-brand-600);font-size:13px;margin-top:6px;}
.badge-c{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;padding:5px 13px;
  font-size:12.5px;font-weight:600;
  background:var(--c-brand-100);color:var(--c-brand-700);
}
.badge-accent{background:var(--c-accent-100);color:#b95d10;}
.badge-good{background:#e6f6ec;color:#1d8449;}

/* ============ 标签云 ============ */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px;}
.tag-c{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;
  border:1px solid var(--c-line);background:#fff;
  font-size:14.5px;color:var(--c-ink-2);
  transition:all .18s ease;
}
.tag-c:hover{border-color:var(--c-brand-500);color:var(--c-brand-700);background:var(--c-brand-100);transform:translateY(-1px);}
.tag-c i{font-size:12px;color:var(--c-brand-600);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.accordion-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sub);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-left:3px solid var(--c-brand-600);
  box-shadow:var(--sh-2);
}
.accordion-button{
  width:100%;text-align:left;border:0;background:#fff;
  padding:18px 56px 18px 20px;position:relative;
  font-size:16.5px;font-weight:600;color:var(--c-ink);
  display:block;cursor:pointer;
}
.accordion-button:not(.collapsed){background:var(--c-brand-100);color:var(--c-brand-700);}
.accordion-button:hover{background:var(--c-brand-100);}
.accordion-button:focus{outline:none;box-shadow:inset 0 0 0 2px rgba(26,138,143,.35);}
.accordion-button::after{
  content:"+";position:absolute;right:20px;top:50%;
  transform:translateY(-50%);
  font-size:22px;font-weight:400;line-height:1;color:var(--c-brand-600);
  transition:transform .22s ease;background:none!important;width:auto;height:auto;
}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg);}
.accordion-body{padding:4px 22px 20px;font-size:15.5px;color:var(--c-ink-2);line-height:1.85;}

/* ============ CTA 通栏 ============ */
.cta-band{
  background:var(--c-brand-900);color:#d6e9ea;
  border-radius:20px;padding:46px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-2);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:#a9c8ca;font-size:15.5px;max-width:560px;margin:0;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0;}
.cta-band .btn-ghost-c{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.cta-band .btn-ghost-c:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ============ 相关栏目卡 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card-c{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card-c:hover{transform:translateY(-2px);border-color:#bfe3e5;box-shadow:var(--sh-3);}
.card-media{aspect-ratio:16/9;background:var(--c-brand-100);overflow:hidden;border-radius:0;}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;line-height:1.45;}
.card-body p{font-size:14.5px;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px;}
.card-link{font-size:14.5px;font-weight:600;color:var(--c-brand-600);display:inline-flex;align-items:center;gap:6px;}
.card-link:hover{gap:10px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-brand-900);color:#c5dedf;padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff;box-shadow:none;}
.footer-brand strong{display:block;color:#fff;font-size:16.5px;}
.footer-brand span{font-size:12.5px;color:#9dbfc1;}
.footer-col p{font-size:14px;color:#a9c8ca;line-height:1.85;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14.5px;color:#b6d2d3;}
.footer-col ul a:hover{color:#fff;}
.footer-contact-line{display:flex;gap:10px;font-size:14px;color:#b6d2d3;margin-bottom:10px;align-items:flex-start;}
.footer-contact-line i{color:var(--c-brand-500);margin-top:5px;font-size:13px;}
.qr-box{
  width:100px;height:100px;border-radius:12px;border:1px dashed rgba(255,255,255,.34);
  display:flex;align-items:center;justify-content:center;
  font-size:12.5px;color:#9dbfc1;margin-top:14px;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.14);
  margin-top:40px;padding-top:20px;font-size:12.5px;color:#93b6b8;
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-title{font-size:38px;}
  .section{padding:80px 0;}
  .grid-split{gap:40px;}
}
@media (max-width:991.98px){
  .header-inner{height:68px;gap:16px;}
  .main-nav{
    position:fixed;top:0;right:0;z-index:80;
    width:min(86vw,360px);height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:84px 20px 26px;
    transform:translateX(102%);
    transition:transform .26s ease;
    box-shadow:-12px 0 32px rgba(12,58,60,.16);
    overflow-y:auto;margin-left:0;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav a{padding:15px 6px;border-radius:0;border-bottom:1px solid var(--c-line);font-size:15.5px;}
  .main-nav a.active::after{display:none;}
  .main-nav a.active{color:var(--c-brand-700);background:var(--c-brand-100);border-radius:10px;padding-left:12px;}
  .header-actions{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .drawer-extra{display:block;margin-top:22px;padding-top:20px;border-top:1px solid var(--c-line);}
  .drawer-extra .btn-c{width:100%;margin-bottom:10px;}
  .drawer-extra .drawer-note{font-size:13.5px;color:var(--c-ink-2);line-height:1.9;}
  .grid-split,.alt-block{grid-template-columns:1fr;gap:28px;}
  .alt-block.reverse .alt-figure{order:0;}
  .point-stack{margin:16px 0 0 0;}
  .hero-title{font-size:34px;}
  .section{padding:64px 0;}
  .section-tight{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2,.intro-copy h2{font-size:26px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;gap:22px;}
  .cta-band h2{font-size:23px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767.98px){
  body{font-size:15px;}
  .container-x{padding:0 16px;}
  .hero-title{font-size:29px;}
  .hero-lead{font-size:15.5px;}
  .page-hero{padding:34px 0 40px;}
  .section{padding:52px 0;}
  .section-tight{padding:46px 0;}
  .section-head h2,.intro-copy h2{font-size:22px;}
  .alt-copy h3{font-size:19px;}
  .related-grid{grid-template-columns:1fr;}
  .card-body{padding:20px 18px 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{border-radius:16px;padding:30px 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .hero-cta .btn-c{width:100%;}
  .intro-actions .btn-c{width:100%;}
  .point-chip{padding:13px 14px;}
  .btn-lg-c{height:48px;padding:0 20px;}
}

/* roulang page: article */
:root{
  --c-brand-900:#0b2f33;
  --c-brand-700:#10565e;
  --c-brand-600:#0e7c86;
  --c-brand-500:#17a3ad;
  --c-brand-100:#e6f5f6;
  --c-accent-500:#ef7a1c;
  --c-accent-100:#fdeee0;
  --c-good:#1f9d67;
  --c-ink:#16333a;
  --c-text:#2b454d;
  --c-ink-2:#5f7883;
  --c-line:#e2eaec;
  --c-bg:#f7fafb;
  --c-surface:#ffffff;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,47,51,.06);
  --sh-2:0 4px 16px rgba(14,124,134,.10);
  --sh-3:0 12px 28px rgba(11,47,51,.14);
  --sec:96px;
  --bs-primary:#0e7c86;
  --bs-primary-rgb:14,124,134;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --bs-body-color:#2b454d;
  --bs-body-bg:#f7fafb;
  --bs-border-color:#e2eaec;
  --bs-border-radius:16px;
  --bs-link-color:#0e7c86;
  --bs-link-hover-color:#17a3ad;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--c-brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-brand-500)}
button{font-family:inherit}
h1,h2,h3,h4,h5{color:var(--c-ink);font-weight:700;line-height:1.3;letter-spacing:0;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;border-radius:6px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1600px){.container-x{max-width:1280px}}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-brand-600);color:#fff;padding:10px 16px;z-index:2000}
.skip-link:focus{left:12px;top:12px}
.num{font-variant-numeric:tabular-nums}

/* ============ 按钮 ============ */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-sm-c{height:40px;padding:0 18px;font-size:14px}
.btn-primary-c{background:var(--c-brand-600);color:#fff;box-shadow:var(--sh-1)}
.btn-primary-c:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary-c:active{background:var(--c-brand-900);transform:translateY(0)}
.btn-ghost-c{background:#fff;color:var(--c-brand-700);border-color:#c9dfe2}
.btn-ghost-c:hover{background:var(--c-brand-100);border-color:var(--c-brand-500);color:var(--c-brand-700);transform:translateY(-1px)}
.btn-ghost-c:active{background:#d5ecee;transform:translateY(0)}
.btn-accent-c{background:var(--c-accent-500);color:#fff}
.btn-accent-c:hover{background:#d9690f;color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(239,122,28,.22)}
.btn-c[disabled],.btn-c.is-disabled{opacity:.45;cursor:not-allowed;transform:none !important;box-shadow:none}

/* ============ 徽章 / 标签 ============ */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;line-height:1.4;
  background:var(--c-brand-100);color:var(--c-brand-700);
}
.badge-accent{background:var(--c-accent-100);color:#c25708}
.badge-good{background:#e6f6ee;color:var(--c-good)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(150%) blur(6px);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(11,47,51,.10);background:rgba(255,255,255,.92)}
.header-inner{display:flex;align-items:center;gap:20px;height:76px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:inherit}
.brand-mark{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-brand-600),var(--c-brand-500));
  color:#fff;font-size:19px;box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:17px;color:var(--c-ink);font-weight:700}
.brand-text span{font-size:11.5px;color:var(--c-ink-2)}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--c-ink);white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.main-nav a:hover{background:var(--c-brand-100);color:var(--c-brand-700)}
.main-nav a.active{color:var(--c-brand-700);font-weight:700}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--c-brand-600);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  font-size:17px;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--c-brand-100);border-color:var(--c-brand-500);color:var(--c-brand-700)}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:1060;
  background:#fff;border-left:1px solid var(--c-line);
  box-shadow:-14px 0 34px rgba(11,47,51,.16);
  transform:translateX(102%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:20px 20px 24px;overflow-y:auto;
}
body.drawer-open .nav-drawer{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,47,51,.42);z-index:1050;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink)}
.drawer-links{display:flex;flex-direction:column;margin:8px 0 18px}
.drawer-links a{
  padding:14px 4px;border-bottom:1px solid var(--c-line);
  font-size:15.5px;font-weight:500;color:var(--c-ink);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-links a:hover{color:var(--c-brand-600)}
.drawer-links a.active{color:var(--c-brand-700);font-weight:700}
.drawer-cta{display:flex;flex-direction:column;gap:10px;margin-top:auto}
.drawer-cta .btn-c{width:100%}
.drawer-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-ink-2);line-height:1.9}

/* ============ 页面头 ============ */
.page-band{
  background:
    radial-gradient(760px 320px at 88% -20%,rgba(23,163,173,.16),transparent 70%),
    linear-gradient(180deg,#eef7f8 0%,#f7fafb 100%);
  border-bottom:1px solid var(--c-line);
  padding:34px 0 40px;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2);margin-bottom:20px}
.crumbs a{color:var(--c-ink-2)}
.crumbs a:hover{color:var(--c-brand-600)}
.crumbs .sep{color:#b7c8cd}
.crumbs .cur{color:var(--c-ink);font-weight:600;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-band h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.28;max-width:24ch;margin:14px 0 18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:var(--c-ink-2)}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--c-brand-600)}
.meta-line{height:1px;background:var(--c-line);margin-top:26px}

/* ============ 文章布局 ============ */
.article-section{padding:56px 0 var(--sec)}
.article-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:44px;align-items:start}
.article-main{min-width:0}
.article-body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:38px 40px;max-width:820px;
  font-size:16px;line-height:1.9;color:var(--c-text);
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:26px;line-height:1.35;
  margin:32px 0 16px;padding-left:15px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  background:var(--c-brand-600);border-radius:3px;
}
.article-body h3{font-size:20px;margin:28px 0 12px;font-weight:700;color:var(--c-ink)}
.article-body h4{font-size:17.5px;margin:22px 0 10px;font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;border-radius:var(--r-sm);
  background:var(--c-brand-100);border-left:3px solid var(--c-brand-600);
  color:var(--c-brand-700);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-sm);margin:20px auto;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--c-ink-2);text-align:center;margin-top:10px}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.3em}
.article-body ul li{list-style:disc;margin-bottom:.6em;line-height:1.85}
.article-body ol li{list-style:decimal;margin-bottom:.6em;line-height:1.85}
.article-body a{color:var(--c-brand-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--c-brand-500)}
.article-body strong{color:var(--c-ink);font-weight:700}
.article-body table{width:100%;border-collapse:collapse;min-width:540px;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-body th{background:var(--c-brand-100);color:var(--c-brand-700);font-weight:600}
.article-body .table-wrap{overflow-x:auto;margin:22px 0;border:1px solid var(--c-line);border-radius:var(--r-sm)}
.empty-state{
  background:var(--c-brand-100);border:1px solid #d3e9eb;border-radius:var(--r-card);
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:36px 24px;
}
.empty-state .empty-ico{
  width:56px;height:56px;border-radius:16px;background:#fff;color:var(--c-brand-600);
  display:flex;align-items:center;justify-content:center;font-size:22px;box-shadow:var(--sh-1);
}
.empty-state h2{font-size:20px}
.empty-state p{font-size:14.5px;color:var(--c-ink-2);max-width:44ch}

/* ============ 文末模块 ============ */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:28px}
.tag-row .tag-label{font-size:13.5px;color:var(--c-ink-2);margin-right:2px}
.tag-pill{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink);
  font-size:13px;font-weight:600;
}
.tag-pill:hover{border-color:var(--c-brand-500);background:var(--c-brand-100);color:var(--c-brand-700)}
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:34px}
.post-nav-card{
  display:flex;flex-direction:column;gap:8px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-1);color:var(--c-ink);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-nav-card:hover{transform:translateY(-2px);border-color:#bfe0e3;box-shadow:var(--sh-3);color:var(--c-ink)}
.post-nav-card .pn-dir{font-size:12.5px;color:var(--c-brand-600);font-weight:600;display:flex;align-items:center;gap:8px}
.post-nav-card .pn-title{font-size:16px;font-weight:600;line-height:1.5}
.post-nav-card.next{align-items:flex-end;text-align:right}
.post-nav-card.next .pn-dir{flex-direction:row-reverse}
.sub-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:56px 0 22px}
.sub-head h2{font-size:26px}
.sub-head p{font-size:14px;color:var(--c-ink-2);margin-top:6px}
.sub-head a{font-size:14px;font-weight:600}
.card-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.card-c{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card-c:hover{transform:translateY(-2px);border-color:#bfe0e3;box-shadow:var(--sh-3)}
.card-c .thumb{position:relative;aspect-ratio:16/9;background:var(--c-brand-100);overflow:hidden}
.card-c .thumb img{width:100%;height:100%;object-fit:cover}
.card-c .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-c h3{font-size:17px;line-height:1.5}
.card-c p{font-size:14px;color:var(--c-ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-c .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-ink-2)}
.card-c .card-foot .more{color:var(--c-brand-600);font-weight:600}
.back-row{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:22px 22px 24px;
}
.side-card h3{font-size:16px;display:flex;align-items:center;gap:9px;margin-bottom:16px}
.side-card h3 i{color:var(--c-brand-600)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:14px;color:var(--c-ink-2);padding:8px 10px;border-radius:8px;
  border-left:2px solid transparent;line-height:1.6;
}
.toc-list a:hover{background:var(--c-brand-100);color:var(--c-brand-700);border-left-color:var(--c-brand-500)}
.side-links{display:flex;flex-direction:column;gap:14px}
.side-links a{display:flex;gap:12px;align-items:flex-start}
.side-links .mini{
  width:76px;height:56px;flex:0 0 auto;border-radius:10px;overflow:hidden;
  background:var(--c-brand-100);
}
.side-links .mini img{width:100%;height:100%;object-fit:cover}
.side-links .txt{min-width:0}
.side-links .txt strong{
  display:block;font-size:14.5px;font-weight:600;color:var(--c-ink);line-height:1.55;
  transition:color .2s ease;
}
.side-links a:hover .txt strong{color:var(--c-brand-600)}
.side-links .txt em{display:block;font-style:normal;font-size:12.5px;color:var(--c-ink-2);margin-top:4px}
.side-tags{display:flex;flex-wrap:wrap;gap:8px}
.side-cta{
  background:linear-gradient(180deg,#eef7f8,#e3f2f3);
  border:1px solid #cfe7e9;border-radius:var(--r-card);padding:24px 22px;
}
.side-cta h3{font-size:17px;color:var(--c-brand-900);margin-bottom:10px}
.side-cta p{font-size:13.5px;color:var(--c-ink-2);line-height:1.8;margin-bottom:16px}
.side-cta .btn-c{width:100%}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-brand-900);color:#c9dde0;padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.14)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none}
.footer-brand strong{display:block;color:#fff;font-size:16.5px}
.footer-brand span span,.footer-brand > span > span{display:block;font-size:12px;color:#8fb2b7}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:16px}
.footer-col p{font-size:13.5px;line-height:1.9;color:#a9c6ca}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:#c9dde0}
.footer-col ul a:hover{color:#fff}
.footer-contact-line{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:#c9dde0;margin-bottom:12px;line-height:1.7}
.footer-contact-line i{color:var(--c-brand-500);margin-top:4px}
.qr-box{
  width:104px;height:104px;border-radius:12px;border:1px dashed rgba(255,255,255,.34);
  display:flex;align-items:center;justify-content:center;font-size:12.5px;color:#8fb2b7;
  margin-top:14px;background:rgba(255,255,255,.04);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding-top:20px;font-size:12.5px;color:#8fb2b7;
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .main-nav a{padding:10px 11px;font-size:14.5px}
  .article-grid{gap:32px}
}
@media (max-width:992px){
  :root{--sec:64px}
  .main-nav,.header-actions{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:66px;gap:12px}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .article-side{position:static;top:auto}
  .card-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .article-body{padding:30px 26px}
}
@media (max-width:768px){
  :root{--sec:52px}
  .container-x{padding:0 16px}
  .page-band{padding:24px 0 30px}
  .page-band h1{font-size:28px}
  .article-section{padding:32px 0 var(--sec)}
  .article-body{padding:24px 18px;border-radius:14px;font-size:15.5px;line-height:1.85}
  .article-body h2{font-size:22px;margin:28px 0 14px}
  .article-body h3{font-size:18.5px}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .post-nav-card.next{align-items:flex-start;text-align:left}
  .post-nav-card.next .pn-dir{flex-direction:row}
  .card-grid-3{grid-template-columns:minmax(0,1fr)}
  .sub-head{flex-direction:column;align-items:flex-start;gap:8px}
  .sub-head h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:576px){
  .brand-text strong{font-size:15.5px}
  .brand-mark{width:38px;height:38px;font-size:17px}
  .btn-c{width:100%}
  .header-actions .btn-c{width:auto}
  .side-links .mini{width:64px;height:48px}
  .article-meta{gap:8px 16px;font-size:13px}
}

/* roulang page: category2 */
:root{
  --c-brand-900:#0d3b3f;
  --c-brand-700:#10676a;
  --c-brand-600:#0e8f8c;
  --c-brand-500:#26b2ac;
  --c-brand-100:#e7f6f5;
  --c-accent-500:#f2762a;
  --c-accent-100:#fdf0e4;
  --c-good:#1aa86a;
  --c-ink:#14242b;
  --c-ink-2:#5c7480;
  --c-line:#e6edf0;
  --c-bg:#f7fafb;
  --c-surface:#ffffff;
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,59,63,.06);
  --sh-2:0 4px 16px rgba(13,59,63,.09);
  --sh-3:0 12px 28px rgba(13,59,63,.15);

  --bs-primary:#0e8f8c;
  --bs-primary-rgb:14,143,140;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-body-color:#14242b;
  --bs-body-bg:#f7fafb;
  --bs-border-color:#e6edf0;
  --bs-border-radius:12px;
  --bs-link-color:#0e8f8c;
  --bs-link-hover-color:#26b2ac;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-brand-600);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
a:hover{color:var(--c-brand-500);}
h1,h2,h3,h4{line-height:1.32;font-weight:700;margin:0;color:var(--c-ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ====== 覆盖 Bootstrap 默认外观 ====== */
.btn{--bs-btn-border-radius:10px;}
.btn-primary{
  --bs-btn-bg:#0e8f8c;
  --bs-btn-border-color:#0e8f8c;
  --bs-btn-hover-bg:#10676a;
  --bs-btn-hover-border-color:#10676a;
  --bs-btn-active-bg:#0d3b3f;
  --bs-btn-active-border-color:#0d3b3f;
  --bs-btn-color:#fff;
  --bs-btn-hover-color:#fff;
}
.card{
  --bs-card-border-color:#e6edf0;
  --bs-card-border-radius:16px;
  --bs-card-bg:#ffffff;
  --bs-card-box-shadow:0 4px 16px rgba(13,59,63,.09);
}
.badge{--bs-badge-border-radius:999px;font-weight:600;}
.form-control{
  --bs-border-radius:10px;
  --bs-border-color:#e6edf0;
  min-height:46px;
  border-color:var(--c-line);
  color:var(--c-ink);
  font-size:15px;
}
.form-control:focus{
  border-color:var(--c-brand-600);
  box-shadow:0 0 0 3px rgba(14,143,140,.14);
  color:var(--c-ink);
}
.form-control::placeholder{color:#93a9b4;}
.navbar{--bs-navbar-padding-y:0;background:transparent;}
.accordion{
  --bs-accordion-border-color:#e6edf0;
  --bs-accordion-border-radius:12px;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-active-bg:#ffffff;
  --bs-accordion-active-color:#0e8f8c;
}
.table{--bs-table-border-color:#e6edf0;color:var(--c-ink);}
.table thead th{background:var(--c-brand-100);color:var(--c-brand-700);font-weight:600;}

/* ====== 按钮体系 ====== */
.btn-c{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary-c{
  background:var(--c-brand-600);
  color:#fff;
  box-shadow:0 4px 12px rgba(14,143,140,.22);
}
.btn-primary-c:hover,.btn-primary-c:focus{
  background:var(--c-brand-700);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 20px rgba(14,143,140,.3);
}
.btn-primary-c:active{background:var(--c-brand-900);transform:translateY(0);}
.btn-ghost-c{
  background:#fff;
  color:var(--c-brand-700);
  border-color:rgba(14,143,140,.42);
}
.btn-ghost-c:hover,.btn-ghost-c:focus{
  background:var(--c-brand-100);
  color:var(--c-brand-700);
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn-ghost-c:active{background:#d9f0ef;transform:translateY(0);}
.btn-accent-c{
  background:var(--c-accent-500);
  color:#fff;
  box-shadow:0 4px 12px rgba(242,118,42,.26);
}
.btn-accent-c:hover,.btn-accent-c:focus{
  background:#d9641d;
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 20px rgba(242,118,42,.32);
}
.btn-c:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;}
.btn-sm-c{height:40px;padding:0 16px;font-size:14px;}
.btn-lg-c{height:50px;padding:0 28px;font-size:16px;}
.btn-c:disabled,.btn-c.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ====== 头部导航 ====== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.92);
  box-shadow:0 8px 22px rgba(13,59,63,.1);
  backdrop-filter:blur(8px) saturate(150%);
}
.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:44px;
  height:44px;
  border-radius:14px;
  background:var(--c-brand-600);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:19px;
  box-shadow:0 6px 14px rgba(14,143,140,.26);
}
.brand-text{display:flex;flex-direction:column;line-height:1.28;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--c-ink);}
.brand-text span{font-size:12px;color:var(--c-ink-2);}
.main-nav{display:flex;align-items:center;gap:4px;margin:0 auto;}
.main-nav a{
  position:relative;
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:500;
  color:var(--c-ink);
}
.main-nav a:hover{background:var(--c-brand-100);color:var(--c-brand-700);}
.main-nav a.active{background:var(--c-brand-100);color:var(--c-brand-700);font-weight:700;}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:16px;
  right:16px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--c-brand-600);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:var(--r-md);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink);
  font-size:17px;
  cursor:pointer;
  transition:.2s ease;
}
.nav-toggle:hover{border-color:var(--c-brand-600);color:var(--c-brand-600);}
.nav-toggle:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;}

/* ====== 面包屑与小 Hero ====== */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-ink-2);
  margin-bottom:18px;
}
.crumb a{color:var(--c-ink-2);}
.crumb a:hover{color:var(--c-brand-600);}
.crumb .sep{color:#c3d3d8;}
.crumb .current{color:var(--c-ink);font-weight:600;}

.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 52px;
  background:var(--c-brand-100);
  border-bottom:1px solid rgba(14,143,140,.16);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(14,143,140,.075) 1px,transparent 1px),linear-gradient(90deg,rgba(14,143,140,.075) 1px,transparent 1px);
  background-size:46px 46px;
  pointer-events:none;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-140px;
  top:-190px;
  width:440px;
  height:440px;
  border-radius:50%;
  border:1px solid rgba(14,143,140,.22);
  pointer-events:none;
}
.page-hero .container-x{position:relative;z-index:2;}
.page-hero h1{
  font-size:clamp(28px,3.3vw,42px);
  font-weight:700;
  line-height:1.28;
  max-width:860px;
}
.page-hero .hero-lead{
  margin-top:14px;
  font-size:16.5px;
  color:#3f5f68;
  max-width:720px;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  margin-top:26px;
}
.hero-note{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--c-brand-700);
  background:rgba(255,255,255,.72);
  border:1px solid rgba(14,143,140,.2);
  border-radius:var(--r-pill);
  padding:8px 16px;
}
.hero-note i{color:var(--c-accent-500);}

/* ====== 徽章 ====== */
.badge-c{
  display:inline-flex;
  align-items:center;
  gap:5px;
  height:24px;
  padding:0 11px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  background:var(--c-brand-100);
  color:var(--c-brand-700);
  white-space:nowrap;
}
.badge-accent{background:var(--c-accent-100);color:#c05612;}
.badge-good{background:#e7f7ef;color:var(--c-good);}

/* ====== 密集信息区 ====== */
.section-dense{padding:68px 0 20px;}
.dense-layout{
  display:grid;
  grid-template-columns:268px minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.filter-rail{position:sticky;top:96px;}
.rail-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:22px 20px;
  box-shadow:var(--sh-2);
}
.rail-title{
  font-size:15px;
  font-weight:700;
  margin-bottom:6px;
}
.rail-sub{
  font-size:12.5px;
  color:var(--c-ink-2);
  margin-bottom:16px;
}
.rail-list{display:flex;flex-direction:column;gap:8px;}
.rail-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 14px;
  border-radius:var(--r-pill);
  background:#f6f9fa;
  color:var(--c-ink);
  font-size:14px;
  font-weight:500;
}
.rail-list a:hover{background:var(--c-brand-100);color:var(--c-brand-700);}
.rail-list a.active{background:var(--c-brand-600);color:#fff;box-shadow:0 6px 14px rgba(14,143,140,.24);}
.rail-list a i{font-size:11px;opacity:.75;}
.rail-tip{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--c-line);
  font-size:12.5px;
  color:var(--c-ink-2);
  line-height:1.7;
}
.rail-tip a{font-weight:600;}

.metric-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  margin-bottom:24px;
}
.metric-cell{background:#fff;padding:18px 20px;}
.metric-cell .num{
  font-size:26px;
  font-weight:700;
  color:var(--c-brand-600);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.metric-cell .lbl{font-size:12px;color:var(--c-ink-2);margin-top:4px;}

.dense-list{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.dense-item{
  display:flex;
  align-items:flex-start;
  gap:18px;
  padding:20px 24px;
  border-bottom:1px solid var(--c-line);
  transition:background .2s ease;
}
.dense-item:last-child{border-bottom:0;}
.dense-item:hover{background:#f9fcfc;}
.dense-item-main{flex:1 1 auto;min-width:0;}
.dense-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:12px;
  color:var(--c-ink-2);
  margin-bottom:8px;
}
.dense-item h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:6px;
}
.dense-item h3 a{color:var(--c-ink);}
.dense-item h3 a:hover{color:var(--c-brand-700);}
.dense-item p{
  font-size:14px;
  color:var(--c-ink-2);
  line-height:1.75;
}
.dense-arrow{
  flex:0 0 auto;
  width:34px;
  height:34px;
  margin-top:6px;
  border-radius:50%;
  border:1px solid var(--c-line);
  display:grid;
  place-items:center;
  color:var(--c-ink-2);
  font-size:13px;
  transition:.2s ease;
}
.dense-item:hover .dense-arrow{
  background:var(--c-brand-600);
  border-color:var(--c-brand-600);
  color:#fff;
  transform:translateX(2px);
}

/* ====== 字段说明 ====== */
.section-field{padding:76px 0 8px;}
.field-split{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,7fr);
  gap:44px;
  align-items:start;
}
.field-intro h2{font-size:31px;margin-bottom:14px;}
.field-intro p{font-size:15.5px;color:var(--c-ink-2);}
.field-intro .btn-c{margin-top:24px;}
.field-rows{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.field-rows li{
  display:flex;
  gap:18px;
  align-items:flex-start;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:20px 24px;
  box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.field-rows li:hover{
  border-color:rgba(14,143,140,.38);
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
}
.field-no{
  flex:0 0 auto;
  font-size:14px;
  font-weight:700;
  color:var(--c-brand-600);
  font-variant-numeric:tabular-nums;
  padding-top:2px;
}
.field-rows h3{font-size:16.5px;margin-bottom:6px;}
.field-rows p{font-size:14px;color:var(--c-ink-2);line-height:1.75;}

/* ====== FAQ ====== */
.section-faq{padding:78px 0 8px;}
.faq-wrap{max-width:920px;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:rgba(14,143,140,.4);box-shadow:var(--sh-2);}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:none;
  border:0;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  text-align:left;
  cursor:pointer;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  bottom:12px;
  width:3px;
  border-radius:2px;
  background:transparent;
  transition:background .2s ease;
}
.faq-item.open .faq-q::before{background:var(--c-brand-600);}
.faq-q i{font-size:14px;color:var(--c-brand-600);transition:transform .25s ease;}
.faq-item.open .faq-q i{transform:rotate(135deg);}
.faq-q:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:-4px;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{
  padding:0 22px 20px 22px;
  font-size:15px;
  color:var(--c-ink-2);
  line-height:1.85;
}

/* ====== 通栏 CTA ====== */
.section-cta{padding:78px 0 10px;}
.cta-band{
  background:var(--c-brand-900);
  border-radius:var(--r-lg);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  box-shadow:var(--sh-3);
}
.cta-band h2{
  color:#fff;
  font-size:28px;
  margin-bottom:10px;
}
.cta-band p{
  color:#a9c8c8;
  font-size:15px;
  max-width:620px;
}
.cta-band .cta-side{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}
.cta-contact{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:#bfdcdc;
}
.cta-contact i{color:var(--c-brand-500);}

/* ====== 相关栏目 ====== */
.section-rel{padding:80px 0 0;}
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rel-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  display:flex;
  flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{
  transform:translateY(-2px);
  border-color:rgba(14,143,140,.36);
  box-shadow:var(--sh-3);
}
.rel-thumb{
  position:relative;
  aspect-ratio:16/9;
  background:var(--c-brand-100);
  overflow:hidden;
}
.rel-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rel-body h3{font-size:18px;}
.rel-body h3 a{color:var(--c-ink);}
.rel-body h3 a:hover{color:var(--c-brand-700);}
.rel-body p{
  font-size:14px;
  color:var(--c-ink-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--c-ink-2);
  padding-top:10px;
  border-top:1px solid var(--c-line);
}
.rel-meta i{color:var(--c-brand-600);}

/* ====== 页脚 ====== */
.site-footer{
  margin-top:88px;
  background:var(--c-brand-900);
  color:#cfe3e3;
  padding:64px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.2fr 1fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.site-footer .brand-mark{
  width:40px;
  height:40px;
  border-radius:12px;
  background:var(--c-brand-600);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:17px;
  box-shadow:none;
  flex:0 0 auto;
}
.footer-brand > span:last-child{display:flex;flex-direction:column;line-height:1.32;}
.footer-brand strong{font-size:16px;color:#fff;font-weight:700;}
.footer-brand > span:last-child span{font-size:12px;color:#8fb3b3;}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;}
.site-footer ul{display:flex;flex-direction:column;gap:10px;}
.site-footer a{color:#cfe3e3;font-size:14px;}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-col p{font-size:14px;line-height:1.8;color:#a9c8c8;}
.footer-contact-line{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:#cfe3e3;
  margin-bottom:10px;
}
.footer-contact-line i{color:var(--c-brand-500);width:16px;text-align:center;}
.qr-box{
  width:104px;
  height:104px;
  margin-top:14px;
  border-radius:12px;
  border:1px dashed rgba(255,255,255,.35);
  display:grid;
  place-items:center;
  font-size:13px;
  color:#9fbfbf;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding-top:20px;
  font-size:12.5px;
  color:#8fb3b3;
}

/* ====== 响应式 ====== */
@media (max-width:1199.98px){
  .dense-layout{grid-template-columns:236px minmax(0,1fr);gap:24px;}
  .field-split{gap:32px;}
}
@media (max-width:991.98px){
  .header-inner{min-height:64px;gap:12px;}
  .main-nav{
    position:absolute;
    left:0;
    right:0;
    top:calc(100% + 10px);
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    margin:0;
    padding:10px;
    background:#fff;
    border:1px solid var(--c-line);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-3);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:13px 16px;border-radius:var(--r-md);border-bottom:1px solid var(--c-line);}
  .main-nav a:last-child{border-bottom:0;}
  .main-nav a.active::after{display:none;}
  .nav-toggle{display:grid;place-items:center;margin-left:auto;}
  .header-actions{margin-left:0;}
  .header-actions .btn-ghost-c{display:none;}
  .header-actions .btn-primary-c{height:40px;padding:0 14px;font-size:14px;}
  .dense-layout{grid-template-columns:1fr;}
  .filter-rail{position:static;}
  .rail-list{flex-direction:row;flex-wrap:wrap;}
  .rail-list a{border-radius:var(--r-pill);}
  .field-split{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:36px 32px;}
}
@media (max-width:767.98px){
  body{font-size:15px;}
  .page-hero{padding:40px 0 38px;}
  .page-hero .hero-lead{font-size:15.5px;}
  .section-dense{padding:48px 0 12px;}
  .section-field{padding:52px 0 6px;}
  .section-faq{padding:52px 0 6px;}
  .section-cta{padding:52px 0 8px;}
  .section-rel{padding:54px 0 0;}
  .metric-strip{grid-template-columns:repeat(2,1fr);}
  .metric-cell{padding:16px;}
  .metric-cell .num{font-size:22px;}
  .dense-item{padding:18px;gap:12px;}
  .dense-item h3{font-size:16px;}
  .field-intro h2,
  .section-head h2{font-size:24px;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 20px;margin-top:56px;}
  .site-footer .brand-mark{width:44px;height:44px;}
}
@media (max-width:575.98px){
  .container-x{padding:0 16px;}
  .page-hero h1{font-size:26px;}
  .brand-text strong{font-size:15px;}
  .brand-text span{font-size:11px;}
  .brand-mark{width:38px;height:38px;border-radius:12px;font-size:16px;}
  .header-actions .btn-primary-c{display:none;}
  .rail-card{padding:18px 16px;}
  .dense-arrow{display:none;}
  .faq-q{font-size:15px;padding:16px 18px;}
  .faq-a p{padding:0 18px 18px 18px;}
}

/* roulang page: category4 */
:root{
  --c-brand-900:#0c2b34;
  --c-brand-700:#0f5d74;
  --c-brand-600:#0e7f9b;
  --c-brand-500:#1ba7c6;
  --c-brand-100:#e9f6f9;
  --c-accent-500:#f07a13;
  --c-accent-100:#fdeedd;
  --c-good:#159c58;
  --c-ink:#132a33;
  --c-ink-2:#5c6f79;
  --c-line:#e3eaee;
  --c-bg:#f7fafb;
  --c-surface:#ffffff;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(12,43,52,.05);
  --sh-2:0 4px 16px rgba(14,90,110,.09);
  --sh-3:0 12px 28px rgba(14,90,110,.15);
  --bs-primary:#0e7f9b;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  --bs-border-radius:12px;
  --bs-border-color:#e3eaee;
  --bs-body-color:#132a33;
  --bs-link-color:#0e7f9b;
  --bs-link-hover-color:#0f5d74;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  letter-spacing:0;
}
img{max-width:100%;display:block}
a{color:var(--c-brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-brand-700)}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--c-ink);letter-spacing:0}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:32px;margin-bottom:14px}
.section-head p{color:var(--c-ink-2);margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-brand-700);background:var(--c-brand-100);border-radius:999px;padding:5px 14px;margin-bottom:16px}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:200;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(12,43,52,.08);background:rgba(255,255,255,.94);backdrop-filter:blur(6px)}
.header-inner{display:flex;align-items:center;gap:20px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-brand-600),var(--c-brand-500));
  color:#fff;font-size:18px;box-shadow:var(--sh-2);
}
.brand-text strong{display:block;font-size:17px;font-weight:700;color:var(--c-ink);line-height:1.25}
.brand-text span{display:block;font-size:12px;color:var(--c-ink-2);line-height:1.4}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav > a{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--c-ink-2);font-weight:500;white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.main-nav > a:hover{background:var(--c-brand-100);color:var(--c-brand-700)}
.main-nav > a.active{background:var(--c-brand-100);color:var(--c-brand-700);font-weight:600;box-shadow:inset 0 -2px 0 var(--c-brand-600)}
.nav-extra{display:none}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink);font-size:17px;margin-left:auto;cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--c-brand-100);border-color:#cfe3e9}

/* 按钮 */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary-c{background:var(--c-brand-600);color:#fff}
.btn-primary-c:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-primary-c:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost-c{background:#fff;color:var(--c-brand-700);border-color:#cfe3e9}
.btn-ghost-c:hover{background:var(--c-brand-100);color:var(--c-brand-700);transform:translateY(-1px)}
.btn-accent-c{background:var(--c-accent-500);color:#fff}
.btn-accent-c:hover{background:#d86806;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-sm-c{height:40px;padding:0 16px;font-size:14px}
.btn-c[disabled],.btn-c.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* 小英雄区 */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--c-brand-100);
  border-bottom:1px solid var(--c-line);
  padding:56px 0 64px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(14,127,155,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(14,127,155,.07) 1px,transparent 1px);
  background-size:34px 34px;
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(14,127,155,.18);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2)}
.crumb a{color:var(--c-ink-2)}
.crumb a:hover{color:var(--c-brand-600)}
.crumb .sep{color:#b6c6cd}
.crumb .now{color:var(--c-ink);font-weight:600}
.page-hero h1{font-size:42px;margin:18px 0 14px;max-width:900px}
.hero-lead{font-size:17px;color:var(--c-ink-2);max-width:660px;margin:0 0 26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}

/* 时间轴 */
.timeline{position:relative;margin-top:8px}
.tl-row{display:grid;grid-template-columns:repeat(5,1fr);gap:22px;position:relative}
.tl-row::before{
  content:"";position:absolute;left:6%;right:6%;top:22px;height:1px;background:var(--c-line);
}
.tl-item{position:relative;padding-top:0}
.tl-dot{
  position:relative;z-index:2;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--c-surface);border:1px solid #cfe3e9;
  color:var(--c-brand-700);font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-1);
}
.tl-item.is-first .tl-dot{background:var(--c-brand-600);border-color:var(--c-brand-600);color:#fff}
.tl-item h3{font-size:18px;margin:18px 0 8px}
.tl-item p{font-size:14px;color:var(--c-ink-2);margin:0;line-height:1.8}

/* 图文区块 */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split-media{position:relative}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);background:var(--c-brand-100);box-shadow:var(--sh-2)}
.split-media .media-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(255,255,255,.94);border-radius:999px;padding:8px 16px;
  font-size:13px;font-weight:600;color:var(--c-brand-700);box-shadow:var(--sh-1);
}
.point-list{display:grid;gap:14px;margin-top:26px}
.point{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.point:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#cfe3e9}
.point i{color:var(--c-brand-600);font-size:16px;margin-top:4px;flex-shrink:0}
.point strong{display:block;font-size:15px;margin-bottom:2px}
.point span{font-size:14px;color:var(--c-ink-2);line-height:1.75}

/* 指标条 */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:32px 28px;box-shadow:var(--sh-2);
}
.metric{text-align:left;padding-left:20px;border-left:1px solid var(--c-line)}
.metric:first-child{border-left:none;padding-left:0}
.metric strong{
  display:block;font-size:34px;font-weight:700;color:var(--c-brand-600);
  font-variant-numeric:tabular-nums;line-height:1.2;margin-bottom:6px;
}
.metric span{font-size:13px;color:var(--c-ink-2);line-height:1.6;display:block}

/* 玩法卡片 */
.play-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.play-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);height:100%;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.play-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#cfe3e9}
.play-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--c-brand-100);color:var(--c-brand-700);font-size:19px;margin-bottom:18px;
}
.play-card h3{font-size:18px;margin-bottom:10px}
.play-card p{font-size:14px;color:var(--c-ink-2);margin:0;line-height:1.85}
.badge-c{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;
  padding:4px 12px;font-size:12px;font-weight:600;line-height:1.6;
}
.badge-brand{background:var(--c-brand-100);color:var(--c-brand-700)}
.badge-accent{background:var(--c-accent-100);color:#a8500a}
.badge-good{background:#e6f6ee;color:var(--c-good)}

/* FAQ */
.faq-wrap{max-width:900px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;position:relative;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item:hover{box-shadow:var(--sh-2)}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-brand-600);
  transform:scaleY(0);transform-origin:top;transition:transform .25s ease;
}
.faq-item.open{border-color:#cfe3e9;box-shadow:var(--sh-2)}
.faq-item.open::before{transform:scaleY(1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:0;text-align:left;cursor:pointer;
  padding:20px 22px;font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-q .plus{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;background:var(--c-brand-100);color:var(--c-brand-700);
  font-size:13px;transition:transform .28s ease,background .28s ease,color .28s ease;
}
.faq-item.open .plus{transform:rotate(135deg);background:var(--c-brand-600);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 22px;margin:0;font-size:15px;color:var(--c-ink-2);line-height:1.9}

/* 通栏 CTA */
.cta-band{
  background:var(--c-brand-900);color:#fff;border-radius:var(--r-lg);
  padding:44px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-band p{color:#a9c6ce;margin:0;font-size:15px;max-width:640px}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}
.cta-chip{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);
  border-radius:999px;padding:6px 14px;font-size:13px;color:#d6ebf0;margin-bottom:16px;
}
.cta-band .btn-ghost-c{background:transparent;color:#e7f4f7;border-color:rgba(255,255,255,.35)}
.cta-band .btn-ghost-c:hover{background:rgba(255,255,255,.12);color:#fff}

/* 相关栏目 */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rel-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);color:var(--c-ink);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#cfe3e9;color:var(--c-ink)}
.rel-card h3{font-size:18px;margin:14px 0 8px}
.rel-card p{font-size:14px;color:var(--c-ink-2);margin:0 0 14px;line-height:1.8}
.rel-card .go{font-size:14px;font-weight:600;color:var(--c-brand-600);display:inline-flex;align-items:center;gap:8px}
.rel-card:hover .go i{transform:translateX(4px)}
.rel-card .go i{transition:transform .22s ease}

/* 页脚 */
.site-footer{background:var(--c-brand-900);color:#c9dde3;margin-top:96px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none;background:rgba(255,255,255,.12)}
.footer-brand strong{display:block;color:#fff;font-size:17px;line-height:1.3}
.footer-brand span{display:block;font-size:12px;color:#9db9c1}
.footer-col p{font-size:14px;line-height:1.85;color:#a9c6ce;margin:0}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:#a9c6ce;font-size:14px}
.footer-col ul a:hover{color:#fff}
.footer-contact-line{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#a9c6ce;margin-bottom:12px}
.footer-contact-line i{color:#5ec3da;margin-top:5px}
.qr-box{
  margin-top:14px;width:110px;height:110px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.28);
  display:grid;place-items:center;font-size:13px;color:#8fadb6;
}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:#8fadb6;
}

/* 响应式 */
@media (max-width:1200px){
  .page-hero h1{font-size:38px}
  .play-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:992px){
  .section{padding:64px 0}
  .header-inner{height:68px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--c-line);
    padding:8px 16px 20px;margin-left:0;
    box-shadow:0 18px 32px rgba(12,43,52,.12);
    display:none;
  }
  .main-nav.open{display:flex}
  .main-nav > a{
    height:auto;padding:14px 4px;border-radius:0;font-size:15px;
    border-bottom:1px solid var(--c-line);
  }
  .main-nav > a.active{box-shadow:none;background:transparent;color:var(--c-brand-700)}
  .nav-extra{display:block;padding-top:18px}
  .nav-extra .btn-c{width:100%;margin-bottom:12px}
  .nav-extra .nav-contact{font-size:13px;color:var(--c-ink-2);line-height:1.9;border-top:1px solid var(--c-line);padding-top:14px;margin-top:6px}
  .header-actions{display:none}
  .split{grid-template-columns:1fr;gap:32px}
  .metrics{grid-template-columns:repeat(2,1fr);gap:24px;padding:26px 22px}
  .metric:nth-child(3){border-left:none;padding-left:0}
  .tl-row{grid-template-columns:1fr;gap:0}
  .tl-row::before{left:21px;right:auto;top:10px;bottom:26px;width:1px;height:auto}
  .tl-item{display:grid;grid-template-columns:44px 1fr;column-gap:18px;padding-bottom:26px}
  .tl-item h3{margin:6px 0 6px;grid-column:2}
  .tl-item p{grid-column:2;margin:0}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px}
}
@media (max-width:768px){
  body{font-size:15px}
  .container-x{padding:0 18px}
  .page-hero{padding:40px 0 46px}
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:16px}
  .section{padding:52px 0}
  .section-head h2{font-size:24px}
  .play-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr 1fr}
  .metric{padding-left:0;border-left:none}
  .footer-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:22px}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px}
  .brand-text strong{font-size:15px}
  .brand-text span{display:none}
  .metrics{grid-template-columns:1fr;gap:18px}
  .metric strong{font-size:28px}
  .hero-cta .btn-c{width:100%}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn-c{width:100%}
  .timeline{margin-top:4px}
}

/* roulang page: category3 */
:root{
  --c-brand-900:#0d3b3f;
  --c-brand-700:#10666e;
  --c-brand-600:#12838d;
  --c-brand-500:#1aa3ac;
  --c-brand-100:#e6f5f6;
  --c-accent-500:#f4762a;
  --c-accent-100:#fdeee1;
  --c-good:#16a34a;
  --c-ink:#12262a;
  --c-ink-2:#5b7075;
  --c-line:#e3ebec;
  --c-bg:#f7fafa;
  --c-surface:#ffffff;
  --r-card:16px;
  --r-sub:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(18,131,141,.06);
  --sh-card:0 4px 16px rgba(18,131,141,.08);
  --sh-2:0 12px 28px rgba(18,131,141,.14);
  --bs-primary:#12838d;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  --bs-border-radius:12px;
  --bs-border-color:#e3ebec;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--c-font,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-brand-600);text-decoration:none;}
a:hover{color:var(--c-brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;line-height:1.32;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-brand-600);outline-offset:2px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media(min-width:1400px){.container-x{max-width:1280px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(18,131,141,.10);background:rgba(255,255,255,.92);}
.header-inner{display:flex;align-items:center;gap:20px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto;}
.brand-mark{
  width:42px;height:42px;border-radius:12px;background:var(--c-brand-600);color:#fff;
  display:grid;place-items:center;font-size:18px;flex:0 0 42px;
}
.brand-text{display:flex;flex-direction:column;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--c-ink);line-height:1.25;}
.brand-text span{font-size:12px;color:var(--c-ink-2);line-height:1.4;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  display:block;padding:10px 14px;border-radius:999px;font-size:15px;
  color:var(--c-ink-2);text-decoration:none;transition:all .2s ease;white-space:nowrap;
}
.main-nav a:hover{color:var(--c-brand-700);background:var(--c-brand-100);}
.main-nav a.active{color:var(--c-brand-700);background:var(--c-brand-100);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink);place-items:center;font-size:18px;cursor:pointer;
  transition:all .2s ease;
}
.nav-toggle:hover{border-color:var(--c-brand-500);color:var(--c-brand-700);}

/* ---------- buttons ---------- */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:all .22s ease;text-decoration:none;white-space:nowrap;
}
.btn-sm-c{height:40px;padding:0 18px;font-size:14px;}
.btn-primary-c{background:var(--c-brand-600);color:#fff;}
.btn-primary-c:hover{background:var(--c-brand-700);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(18,131,141,.22);}
.btn-ghost-c{background:#fff;color:var(--c-brand-700);border-color:var(--c-brand-600);}
.btn-ghost-c:hover{background:var(--c-brand-100);color:var(--c-brand-700);}
.btn-accent-c{background:var(--c-accent-500);color:#fff;}
.btn-accent-c:hover{background:#e0661e;color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(244,118,42,.26);}
.btn-c:active{transform:translateY(0);}
.btn-c[disabled],.btn-c.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- breadcrumb ---------- */
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2);}
.breadcrumb-x a{color:var(--c-ink-2);}
.breadcrumb-x a:hover{color:var(--c-brand-600);}
.breadcrumb-x .sep{color:#b9c9cb;}
.breadcrumb-x .current{color:var(--c-ink);font-weight:600;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-color:var(--c-brand-100);
  background-image:linear-gradient(rgba(18,131,141,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(18,131,141,.07) 1px,transparent 1px);
  background-size:34px 34px;
  padding:44px 0 62px;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-90px;width:360px;height:360px;
  border-radius:50%;border:38px solid rgba(18,131,141,.07);
}
.page-hero .container-x{position:relative;z-index:2;}
.page-hero h1{
  font-size:42px;font-weight:700;margin:18px 0 14px;max-width:820px;
}
.page-hero .lede{
  font-size:17px;color:var(--c-ink-2);max-width:680px;line-height:1.9;margin:0 0 26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:#fff;color:var(--c-brand-700);border:1px solid #cfe9eb;
}
.chip-accent{background:var(--c-accent-100);color:#b8531a;border-color:#f7d3b4;}
.chip-good{background:#e9f8ee;color:#12813d;border-color:#c7ecd5;}

/* ---------- metric bar ---------- */
.metric-section{margin-top:-44px;position:relative;z-index:5;}
.metric-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;
}
.metric{padding:24px 26px;}
.metric + .metric{border-left:1px solid var(--c-line);}
.metric .num{
  display:block;font-size:32px;font-weight:700;line-height:1.1;color:var(--c-brand-600);
  font-variant-numeric:tabular-nums;
}
.metric .num small{font-size:15px;font-weight:600;margin-left:3px;}
.metric .label{display:block;font-size:13px;color:var(--c-ink-2);margin-top:6px;line-height:1.6;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section--first{padding:64px 0 88px;}
.section--tint{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-brand-700);background:var(--c-brand-100);padding:6px 14px;border-radius:999px;
  margin-bottom:14px;
}
.section-head h2{font-size:31px;font-weight:700;margin-bottom:12px;}
.section-head p{color:var(--c-ink-2);font-size:16px;margin:0;line-height:1.9;}

/* ---------- tile grid ---------- */
.tile-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.tile{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:all .25s ease;
}
.tile:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#b8dfe2;}
.tile-media{aspect-ratio:16/9;background:var(--c-brand-100);overflow:hidden;}
.tile-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.tile:hover .tile-media img{transform:scale(1.03);}
.tile-body{padding:26px 28px 28px;}
.badge-cat{
  display:inline-block;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:var(--c-brand-100);color:var(--c-brand-700);
}
.badge-accent{background:var(--c-accent-100);color:#b8531a;}
.tile h3{font-size:21px;margin:14px 0 10px;line-height:1.4;}
.tile p{
  color:var(--c-ink-2);font-size:15px;margin:0;line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.tile-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:20px;
  font-size:14px;font-weight:600;color:var(--c-brand-600);
}
.tile-link i{transition:transform .22s ease;}
.tile:hover .tile-link i{transform:translateX(4px);}

/* ---------- split blocks ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.split + .split{margin-top:72px;}
.split-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-card);aspect-ratio:4/3;background:var(--c-brand-100);
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-body h3{font-size:24px;margin-bottom:14px;}
.split-body p{color:var(--c-ink-2);font-size:15.5px;line-height:1.9;}
.split-list{margin-top:18px;display:grid;gap:12px;}
.split-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-ink-2);line-height:1.8;
}
.split-list li i{color:var(--c-brand-600);margin-top:5px;font-size:14px;}
.split.reverse .split-media{order:2;}
.split.reverse .split-body{order:1;}

/* ---------- checklist ---------- */
.check-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.check-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:30px 32px;box-shadow:var(--sh-card);
}
.check-list{display:grid;gap:14px;}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sub);
  padding:18px 20px;transition:all .22s ease;
}
.check-list li:hover{border-color:#b8dfe2;box-shadow:var(--sh-card);transform:translateY(-2px);}
.check-list .ico{
  width:30px;height:30px;border-radius:9px;background:var(--c-brand-100);color:var(--c-brand-700);
  display:grid;place-items:center;font-size:13px;flex:0 0 30px;margin-top:2px;
}
.check-list strong{display:block;font-size:15.5px;color:var(--c-ink);font-weight:600;line-height:1.6;}
.check-list span{display:block;font-size:14px;color:var(--c-ink-2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  position:relative;background:#fff;border:1px solid var(--c-line);
  border-radius:14px;overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:#b8dfe2;box-shadow:var(--sh-1);}
.faq-item.open::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-brand-600);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 26px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-q .plus{color:var(--c-brand-600);font-size:15px;transition:transform .28s ease;flex:0 0 auto;}
.faq-item.open .faq-q .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 26px 22px;margin:0;color:var(--c-ink-2);font-size:15px;line-height:1.9;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--c-brand-900);border-radius:20px;padding:46px 50px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.76);margin:0;font-size:15.5px;max-width:560px;line-height:1.85;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-band .btn-ghost-c{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.cta-band .btn-ghost-c:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ---------- related links ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-1);transition:all .25s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#b8dfe2;}
.rel-card .rel-ico{
  width:38px;height:38px;border-radius:11px;background:var(--c-brand-100);color:var(--c-brand-700);
  display:grid;place-items:center;font-size:16px;margin-bottom:16px;
}
.rel-card h3{font-size:18px;margin-bottom:8px;}
.rel-card p{font-size:14px;color:var(--c-ink-2);margin:0;line-height:1.8;}
.rel-card .rel-go{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:13.5px;font-weight:600;color:var(--c-brand-600);
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-brand-900);color:rgba(255,255,255,.78);
  margin-top:88px;padding:64px 0 28px;font-size:14px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.2fr 1.2fr;gap:40px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-col p{color:rgba(255,255,255,.7);line-height:1.9;font-size:14px;margin:0;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand strong{color:#fff;font-size:16px;display:block;line-height:1.3;}
.footer-brand span{font-size:12px;color:rgba(255,255,255,.6);}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{color:rgba(255,255,255,.78);font-size:14px;transition:color .2s ease;}
.footer-col ul a:hover{color:#fff;}
.footer-contact-line{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.75);margin-bottom:12px;font-size:14px;}
.footer-contact-line i{color:var(--c-brand-500);width:16px;text-align:center;}
.qr-box{
  margin-top:14px;width:110px;height:110px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.32);display:grid;place-items:center;
  font-size:12px;color:rgba(255,255,255,.55);text-align:center;line-height:1.6;
}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.6);
}

/* ---------- responsive ---------- */
@media(max-width:1200px){
  .page-hero h1{font-size:38px;}
}
@media(max-width:992px){
  .main-nav{
    position:fixed;top:76px;left:0;right:0;margin:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--c-line);
    padding:12px 16px 0;max-height:calc(100vh - 76px);overflow:auto;
    transform:translateY(-14px);opacity:0;pointer-events:none;
    transition:opacity .24s ease,transform .24s ease;
  }
  .main-nav.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .main-nav a{padding:15px 10px;border-radius:10px;border-bottom:1px solid var(--c-line);font-size:15.5px;}
  .main-nav a:last-child{border-bottom:0;}
  .main-nav a.active{background:var(--c-brand-100);}
  .main-nav::after{
    content:"资料疑问可发送邮件至 service@girbaud.cn";
    display:block;padding:16px 10px 20px;font-size:13px;color:var(--c-ink-2);
  }
  .nav-toggle{display:grid;margin-left:auto;}
  .header-actions{margin-left:auto;}
  .header-actions .btn-ghost-c{display:none;}
  .header-actions .btn-primary-c{height:40px;padding:0 16px;font-size:14px;}
  .page-hero h1{font-size:34px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:0;}
  .split.reverse .split-body{order:0;}
  .check-wrap{grid-template-columns:1fr;gap:32px;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
  .section--first{padding:48px 0 64px;}
  .cta-band{padding:36px 30px;}
}
@media(max-width:768px){
  .container-x{padding:0 16px;}
  .tile-grid{grid-template-columns:1fr;}
  .metric-bar{grid-template-columns:repeat(2,1fr);}
  .metric{padding:20px;}
  .metric:nth-child(2n){border-left:1px solid var(--c-line);}
  .metric:nth-child(2n+1){border-left:0;}
  .metric:nth-child(n+3){border-top:1px solid var(--c-line);}
  .metric .num{font-size:28px;}
  .section-head h2{font-size:24px;}
  .cta-band h2{font-size:23px;}
  .tile-body{padding:20px 20px 22px;}
  .check-card{padding:24px 20px;}
  .faq-q{padding:17px 20px;font-size:15.5px;}
  .faq-a p{padding:0 20px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media(max-width:576px){
  body{font-size:15px;}
  .header-inner{height:66px;gap:10px;}
  .main-nav{top:66px;max-height:calc(100vh - 66px);}
  .brand-text strong{font-size:15px;}
  .brand-text span{display:none;}
  .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:16px;}
  .header-actions .btn-primary-c{height:38px;padding:0 12px;font-size:13px;}
  .page-hero{padding:32px 0 50px;}
  .page-hero h1{font-size:28px;margin:14px 0 12px;}
  .page-hero .lede{font-size:15px;}
  .hero-actions .btn-c{width:100%;}
  .metric .num{font-size:24px;}
  .metric .label{font-size:12px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .split-body h3{font-size:20px;}
  .faq-list{gap:10px;}
  .cta-band{padding:28px 20px;}
  .rel-card{padding:22px 20px;}
}