/* roulang page: index */
:root{
  --brand-600:#0E6F8E;
  --brand-500:#1789AE;
  --brand-700:#0B4F66;
  --accent-500:#F4791F;
  --accent-600:#DB6512;
  --tint-100:#E8F4F7;
  --bg:#F4F8FA;
  --surface:#FFFFFF;
  --line:#E3ECF1;
  --ink-900:#14323F;
  --ink-600:#526A76;
  --ink-400:#8FA4AE;
  --ok:#1F9D6B;
  --warn:#E0A21A;
  --err:#D8483C;
  --r-card:14px;
  --r-img:12px;
  --r-hero:16px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,60,80,.05);
  --sh-2:0 8px 24px rgba(16,60,80,.07);
  --sh-3:0 16px 40px rgba(16,60,80,.10);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-700);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--tint{background:var(--tint-100);}
.section--tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{font-size:32px;font-weight:700;color:var(--ink-900);}
.section-head p{margin-top:12px;font-size:16px;color:var(--ink-600);}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(-1px);}
.btn-accent{background:var(--accent-500);color:#fff;font-weight:600;}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(-1px);}
.btn-ghost{background:var(--surface);color:var(--brand-700);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand-500);background:var(--tint-100);color:var(--brand-700);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;background:var(--tint-100);
  color:var(--brand-700);font-size:13px;line-height:1.6;font-weight:600;
}
.badge--accent{background:rgba(244,121,31,.12);color:var(--accent-600);}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--ink-600);font-weight:500;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:var(--sh-2);
  transition:background .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-stuck{background:rgba(255,255,255,.94);border-bottom-color:var(--line);box-shadow:var(--sh-3);}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px;transition:height .28s var(--ease);}
.site-header.is-stuck .nav-inner{height:60px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;flex:none;}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:34px;height:34px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;
}
.logo-text{font-size:20px;font-weight:700;white-space:nowrap;}
.logo-suffix{color:var(--brand-600);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:999px;
  font-size:15px;color:var(--ink-600);font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{background:var(--tint-100);color:var(--brand-700);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:rgba(255,255,255,.7);color:var(--ink-600);
  display:grid;place-items:center;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--tint-100);}
.hamburger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:rgba(255,255,255,.7);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-600);border-radius:2px;transition:transform .24s var(--ease),opacity .2s var(--ease);}
.hamburger.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger.is-active span:nth-child(2){opacity:0;}
.hamburger.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,40,52,.45);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;left:0;right:0;z-index:115;
  background:var(--surface);padding:74px 20px 24px;
  box-shadow:var(--sh-3);
  transform:translateY(-102%);transition:transform .3s var(--ease);
}
.mobile-drawer.is-open{transform:translateY(0);}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 4px;font-size:15px;color:var(--ink-900);
  border-bottom:1px solid var(--line);font-weight:500;
}
.mobile-drawer a.is-active{color:var(--brand-700);font-weight:600;}
.mobile-drawer .btn{margin-top:20px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;padding:126px 0 64px;
  background:
    radial-gradient(circle at 88% 12%,rgba(23,136,168,.10),transparent 46%),
    linear-gradient(180deg,#F7FBFC 0%,var(--bg) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(14,111,142,.10) 1px,transparent 1px);
  background-size:22px 22px;
  mask-image:linear-gradient(180deg,#000,transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 78%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:6fr 5fr;gap:48px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.85);
  border:1px solid var(--line);box-shadow:var(--sh-1);
  font-size:13px;font-weight:600;color:var(--brand-700);
}
.eyebrow i{color:var(--accent-500);}
.hero h1{
  margin-top:20px;font-size:44px;line-height:1.22;font-weight:700;color:var(--ink-900);
}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--ink-600);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-note{margin-top:12px;font-size:13px;color:var(--ink-400);}
.hero-trust{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600);}
.hero-trust i{color:var(--brand-500);font-size:14px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;object-position:center top;
  border-radius:var(--r-hero);box-shadow:var(--sh-3);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-hero);
  background:linear-gradient(180deg,rgba(14,111,142,.08),rgba(14,111,142,0) 62%);
  pointer-events:none;
}
.float-card{
  position:absolute;left:-24px;bottom:-26px;width:270px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-3);padding:16px 18px;
}
.float-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:7px 0;font-size:13px;border-bottom:1px dashed var(--line);}
.float-row:last-child{border-bottom:none;}
.float-row span{color:var(--ink-400);white-space:nowrap;}
.float-row strong{color:var(--ink-900);font-weight:600;font-size:13px;text-align:right;}

/* ---------- 权益横条 ---------- */
.perk-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  padding:20px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.perk{
  display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:999px;
  background:var(--tint-100);font-size:14px;color:var(--brand-700);font-weight:600;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.perk:hover{transform:translateY(-2px);background:#DCEFF4;}
.perk i{color:var(--accent-500);}

/* ---------- 阶梯卡 ---------- */
.stairs{position:relative;padding-left:26px;}
.stairs::before{
  content:"";position:absolute;left:9px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand-500),var(--line));
  border-radius:2px;
}
.stair{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;
  margin-bottom:20px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.stair:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(23,136,168,.35);}
.stair::before{
  content:"";position:absolute;left:-24px;top:32px;width:12px;height:12px;border-radius:50%;
  background:var(--surface);border:3px solid var(--brand-500);
}
.stair:nth-child(2){margin-left:24px;}
.stair:nth-child(3){margin-left:48px;}
.stair:nth-child(4){margin-left:72px;border-color:var(--accent-500);box-shadow:var(--sh-2);}
.stair:nth-child(4)::before{border-color:var(--accent-500);}
.stair-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.stair-title{font-size:20px;font-weight:600;color:var(--ink-900);}
.stair-threshold{font-size:20px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;}
.stair-desc{margin-top:8px;font-size:14px;color:var(--ink-600);}
.stair-list{margin-top:16px;display:grid;gap:8px;}
.stair-list li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-600);}
.stair-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand-500);
}
.stair .btn{margin-top:18px;}

/* ---------- 对比表 ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);box-shadow:var(--sh-1);
  -webkit-overflow-scrolling:touch;
}
.compare-table{min-width:760px;font-size:15px;}
.compare-table th,.compare-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle;}
.compare-table thead th{
  background:var(--tint-100);font-weight:600;color:var(--brand-700);font-size:15px;
  position:relative;
}
.compare-table thead th:first-child{color:var(--ink-600);}
.compare-table thead th.is-recommended{background:#DCEEF3;color:var(--brand-700);}
.compare-table thead th.is-recommended::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--accent-500);
}
.compare-table tbody tr:nth-child(odd){background:#FAFCFD;}
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table td:first-child{color:var(--ink-600);font-weight:600;}
.compare-table td.is-recommended{background:rgba(232,244,247,.7);font-weight:600;color:var(--brand-700);}
.compare-table td .yes{color:var(--ok);font-weight:600;}
.compare-table td .no{color:var(--ink-400);}

/* ---------- 限时条带 ---------- */
.promo-strip{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:26px 30px;border-radius:var(--r-card);
  background:rgba(14,111,142,.08);border:1px solid rgba(14,111,142,.18);
}
.promo-left{display:flex;align-items:center;gap:22px;flex-wrap:wrap;}
.promo-text h3{font-size:20px;font-weight:600;color:var(--ink-900);}
.promo-text p{margin-top:4px;font-size:14px;color:var(--ink-600);}
.countdown{display:flex;align-items:center;gap:8px;}
.cd-cell{
  min-width:54px;padding:8px 10px;border-radius:10px;background:var(--surface);
  border:1px solid var(--line);text-align:center;box-shadow:var(--sh-1);
}
.cd-cell b{display:block;font-size:20px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.2;}
.cd-cell span{font-size:11px;color:var(--ink-400);}
.cd-sep{color:var(--brand-500);font-weight:700;}
.promo-strip .btn{animation:pulseSoft 2.6s ease-in-out infinite;}
@keyframes pulseSoft{
  0%,100%{box-shadow:0 0 0 0 rgba(244,121,31,.34);}
  50%{box-shadow:0 0 0 10px rgba(244,121,31,0);}
}

/* ---------- 资讯列表 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px;}
.news-head h2{font-size:32px;font-weight:700;}
.news-head p{margin-top:10px;font-size:16px;color:var(--ink-600);}
.link-more{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{gap:10px;}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(23,136,168,.3);}
.news-thumb{display:block;overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .3s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;gap:10px;}
.news-meta-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.news-meta-top time{font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;}
.news-body h3{font-size:18px;font-weight:600;line-height:1.45;}
.news-body h3 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--ink-900);}
.news-body h3 a:hover{color:var(--brand-600);}
.news-body p{
  font-size:14px;color:var(--ink-600);flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);padding-top:12px;border-top:1px solid var(--line);}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 24px;background:var(--surface);border:1px dashed var(--line);
  border-radius:var(--r-card);text-align:center;
}
.empty-state i{font-size:40px;color:var(--brand-500);opacity:.55;}
.empty-state p{font-size:15px;color:var(--ink-600);}

/* ---------- FAQ ---------- */
.faq-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 22px;background:transparent;border:none;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink-900);text-align:left;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.faq-q:hover{background:var(--tint-100);color:var(--brand-700);}
.faq-q i{transition:transform .28s var(--ease);color:var(--brand-500);font-size:15px;flex:none;}
.faq-item.is-open .faq-q{color:var(--brand-700);}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease);}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--ink-600);}

/* ---------- 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.contact-info h2{font-size:32px;font-weight:700;}
.contact-info>p{margin-top:14px;font-size:16px;color:var(--ink-600);}
.point-list{margin-top:26px;display:grid;gap:14px;}
.point-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-600);}
.point-list i{color:var(--brand-500);margin-top:5px;flex:none;}
.contact-meta{margin-top:30px;padding-top:22px;border-top:1px solid var(--line);display:grid;gap:10px;font-size:14px;color:var(--ink-600);}
.contact-meta span{color:var(--ink-400);display:inline-block;min-width:78px;}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:30px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-600);margin-bottom:8px;}
.field .req{color:var(--err);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;
  background:#FBFDFE;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(23,136,168,.16);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err);background:#FEF7F6;}
.field-err{display:none;margin-top:6px;font-size:13px;color:var(--err);}
.field.has-error .field-err{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-600);margin-bottom:20px;}
.check-row input{width:17px;height:17px;margin-top:5px;flex:none;accent-color:var(--brand-600);}
.form-tip{margin-top:12px;font-size:13px;color:var(--ink-400);text-align:center;}
.form-alert{
  display:none;align-items:center;gap:10px;padding:14px 16px;border-radius:10px;
  font-size:14px;font-weight:600;margin-bottom:20px;
}
.form-alert.is-ok{display:flex;background:#E9F7F1;color:var(--ok);border:1px solid rgba(31,157,107,.3);}
.form-alert.is-err{display:flex;background:#FDEDEB;color:var(--err);border:1px solid rgba(216,72,60,.28);}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F2A33;color:rgba(255,255,255,.72);margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:24px;padding:64px 32px 40px;}
.footer-brand .logo{color:#fff;}
.footer-brand .logo-text{color:#fff;font-size:19px;}
.footer-brand .logo-suffix{color:#7FD3E8;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col a,.footer-col p{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:10px;transition:color .2s var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 32px 28px;border-top:1px solid rgba(255,255,255,.12);margin:0 auto;
  max-width:var(--container);
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.55);line-height:1.7;}
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:100;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);
  background:var(--surface);color:var(--brand-700);box-shadow:var(--sh-3);
  display:grid;place-items:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease),background .2s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--tint-100);}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-links{display:none;}
  .hamburger{display:flex;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .hero{padding:112px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:34px;}
  .hero-visual{order:-1;}
  .float-card{left:auto;right:16px;bottom:-22px;width:250px;}
  .perk-bar{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;padding:52px 24px 32px;}
  .footer-bottom{padding:20px 24px 26px;}
}
@media (max-width:768px){
  .news-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .stair:nth-child(2),.stair:nth-child(3),.stair:nth-child(4){margin-left:0;}
  .stairs{padding-left:0;}
  .stairs::before{display:none;}
  .stair::before{display:none;}
  .section-head h2,.news-head h2,.contact-info h2{font-size:26px;}
  .faq-q{font-size:15px;padding:14px 18px;}
  .faq-a-inner{padding:0 18px 18px;}
}
@media (max-width:640px){
  .hero{padding:100px 0 48px;}
  .hero h1{font-size:28px;line-height:1.32;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-trust{gap:14px;}
  .hero-trust li{width:100%;}
  .float-card{position:static;width:100%;margin-top:16px;}
  .perk-bar{grid-template-columns:1fr;padding:16px;}
  .promo-strip{padding:20px;}
  .promo-left{width:100%;}
  .promo-strip .btn{width:100%;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:8px;}
  .container{padding:0 16px;}
}
@media (max-width:420px){
  .hero h1{font-size:25px;}
  .logo-text{font-size:17px;}
  .cd-cell{min-width:46px;padding:6px 8px;}
  .cd-cell b{font-size:17px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand-700:#0B4F66;
  --brand-600:#0E6F8E;
  --brand-500:#1789AE;
  --accent-500:#F4791F;
  --accent-600:#DB6512;
  --tint-100:#E8F4F7;
  --bg:#F4F8FA;
  --surface:#FFFFFF;
  --line:#E3ECF1;
  --ink-900:#14323F;
  --ink-600:#526A76;
  --ink-400:#8FA4AE;
  --ok:#1F9D6B;
  --warn:#E0A21A;
  --err:#D8483C;
  --sh-1:0 1px 2px rgba(16,60,80,.05);
  --sh-2:0 8px 24px rgba(16,60,80,.07);
  --sh-3:0 16px 40px rgba(16,60,80,.10);
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --container:1200px;
  --narrow:820px;
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t);}
a:hover{color:var(--brand-700);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  transition:transform var(--t),background var(--t),border-color var(--t),box-shadow var(--t),color var(--t);
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 18px rgba(244,121,31,.24);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(244,121,31,.28);}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{background:rgba(255,255,255,.72);color:var(--brand-700);border-color:var(--line);}
.btn-ghost:hover{background:var(--tint-100);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--brand-600);border-color:rgba(23,136,168,.4);}
.btn-outline:hover{background:var(--tint-100);border-color:var(--brand-600);color:var(--brand-700);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.03em;
  background:var(--tint-100);color:var(--brand-700);
}
.badge-accent{background:rgba(244,121,31,.12);color:var(--accent-600);}
.badge-soft{background:rgba(23,136,168,.1);color:var(--brand-600);}

/* ============ header / nav ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-2);
  transition:background var(--t),box-shadow var(--t),border-color var(--t),height var(--t);
}
.site-header.is-stuck{background:rgba(255,255,255,.96);box-shadow:var(--sh-3);}
.nav-inner{
  display:flex;align-items:center;gap:24px;height:68px;
  transition:height var(--t);
}
.site-header.is-stuck .nav-inner{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:36px;height:36px;border-radius:50%;flex:0 0 36px;
  background:linear-gradient(140deg,var(--brand-500),var(--brand-700));
  color:#fff;font-size:18px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.logo-text{font-size:20px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.logo-suffix{color:var(--brand-600);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:15px;color:var(--ink-600);border-radius:var(--r-pill);
  transition:color var(--t),background var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{background:var(--tint-100);color:var(--brand-700);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--ink-600);cursor:pointer;
  transition:border-color var(--t),color var(--t),background var(--t);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--tint-100);}
.nav-toggle{display:none;}
.nav-drawer{
  position:fixed;inset:0;z-index:90;background:rgba(12,40,52,.45);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.nav-drawer.is-open{opacity:1;visibility:visible;}
.nav-drawer-panel{
  background:#fff;padding:16px 20px 28px;
  transform:translateY(-16px);transition:transform var(--t);
  box-shadow:var(--sh-3);
}
.nav-drawer.is-open .nav-drawer-panel{transform:translateY(0);}
.nav-drawer-panel a{
  display:flex;align-items:center;height:48px;font-size:16px;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.nav-drawer-panel a:last-of-type{border-bottom:0;}
.nav-drawer-panel a.is-active{color:var(--brand-600);font-weight:600;}
.drawer-close{
  margin-left:auto;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--ink-600);cursor:pointer;
}
.drawer-head{display:flex;align-items:center;padding-bottom:8px;}

/* ============ breadcrumb ============ */
.page-top{padding:104px 0 0;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-400);line-height:1.6;
}
.breadcrumb a{color:var(--ink-600);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:var(--ink-400);}
.breadcrumb .current{color:var(--ink-600);}

/* ============ layout ============ */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:40px;align-items:start;padding:28px 0 0;
}
.article-head{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:32px 36px;}
.article-head h1{font-size:34px;font-weight:700;line-height:1.32;color:var(--ink-900);}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:18px;font-size:13px;color:var(--ink-400);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line);display:inline-block;}
.divider{height:1px;background:var(--line);margin:24px 0 0;border:0;}

/* ============ article body ============ */
.article-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:36px;margin-top:24px;
}
.article-body .prose{max-width:780px;}
.article-body p{margin:0 0 1.2em;font-size:16px;line-height:1.85;color:var(--ink-600);}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:14px;
  font-size:24px;font-weight:700;color:var(--ink-900);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;width:4px;height:1em;border-radius:2px;background:var(--brand-500);
}
.article-body h3{margin:28px 0 12px;font-size:19px;font-weight:600;color:var(--ink-900);}
.article-body ul{margin:0 0 1.2em;padding-left:2px;}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:8px;font-size:16px;line-height:1.8;color:var(--ink-600);}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand-500);
}
.article-body ol{margin:0 0 1.2em;padding-left:22px;color:var(--ink-600);}
.article-body ol li{margin-bottom:8px;line-height:1.8;}
.article-body blockquote{
  margin:0 0 1.4em;padding:16px 20px;border-left:3px solid var(--brand-500);
  background:var(--tint-100);border-radius:0 var(--r-img) var(--r-img) 0;
  font-size:15px;line-height:1.85;color:var(--brand-700);
}
.article-body blockquote p{margin:0;color:inherit;font-size:15px;}
.article-body img{border-radius:var(--r-img);margin:8px auto 6px;box-shadow:var(--sh-1);}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-400);margin-bottom:24px;}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(23,136,168,.35);}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--brand-700);}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:15px;}
.article-body thead th{background:var(--tint-100);color:var(--brand-700);font-weight:600;text-align:left;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;color:var(--ink-600);line-height:1.7;}
.article-body tbody tr:nth-child(even){background:#FAFCFD;}
.article-body strong{color:var(--ink-900);}
.article-body hr{border:0;height:1px;background:var(--line);margin:32px 0;}
.article-empty{
  text-align:center;padding:56px 20px;
}
.article-empty .empty-icon{
  width:80px;height:80px;margin:0 auto 18px;border-radius:50%;
  background:var(--tint-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:34px;font-weight:700;
}
.article-empty h3{font-size:20px;margin-bottom:8px;}
.article-empty p{color:var(--ink-600);font-size:15px;margin-bottom:20px;}

/* ============ sidebar ============ */
.sidebar{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:22px;
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-500);}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;color:var(--ink-600);
  border-left:2px solid transparent;
}
.toc-list a:hover{background:var(--tint-100);color:var(--brand-700);border-left-color:var(--brand-500);}
.hot-list li{border-bottom:1px dashed var(--line);}
.hot-list li:last-child{border-bottom:0;}
.hot-list a{display:flex;gap:8px;padding:10px 0;font-size:14px;color:var(--ink-600);line-height:1.6;}
.hot-list a:hover{color:var(--brand-600);}
.hot-list .rank{
  flex:0 0 20px;height:20px;margin-top:3px;border-radius:6px;background:var(--tint-100);
  color:var(--brand-600);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.hot-list li:first-child .rank{background:rgba(244,121,31,.15);color:var(--accent-600);}
.side-cta{background:linear-gradient(160deg,var(--brand-700),var(--brand-600));border:0;color:#fff;}
.side-cta h3{color:#fff;}
.side-cta h3::before{background:var(--accent-500);}
.side-cta p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.82);margin-bottom:16px;}
.side-cta .btn-primary{width:100%;}

/* ============ footer area of article ============ */
.foot-blocks{padding:40px 0 0;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .label{font-size:14px;color:var(--ink-400);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-600);
  transition:border-color var(--t),color var(--t),background var(--t),transform var(--t);
}
.tag:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--tint-100);transform:translateY(-2px);}
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px;}
.pager a{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px;color:var(--ink-900);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.pager a:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,136,168,.4);}
.pager .pager-label{font-size:13px;color:var(--ink-400);margin-bottom:8px;display:block;}
.pager .pager-title{font-size:16px;font-weight:600;line-height:1.6;}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
.section-head h2{font-size:24px;font-weight:700;}
.section-head p{font-size:14px;color:var(--ink-400);margin-top:6px;}
.section-head .more{font-size:14px;font-weight:600;color:var(--brand-600);}
.section-head .more:hover{color:var(--brand-700);text-decoration:underline;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  position:relative;display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  overflow:hidden;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand-500);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);z-index:2;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,136,168,.35);}
.card:hover::before{transform:scaleX(1);}
.card-media{aspect-ratio:16/9;background:var(--tint-100);overflow:hidden;position:relative;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:17px;font-weight:600;line-height:1.55;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-title:hover{color:var(--brand-600);}
.card-desc{font-size:14px;line-height:1.7;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1;}
.card-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-top:2px;}

.cta-band{
  margin:56px 0 0;background:rgba(23,136,168,.08);border:1px solid rgba(23,136,168,.22);
  border-radius:var(--r-card);padding:28px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:22px;font-weight:700;margin-bottom:6px;}
.cta-band p{font-size:14px;color:var(--ink-600);}
.cta-band .btn-hint{font-size:13px;color:var(--ink-400);margin-top:8px;display:block;}

/* ============ footer ============ */
.site-footer{background:#0F2A33;margin-top:72px;color:rgba(255,255,255,.72);font-size:14px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px;
  padding:56px 32px 36px;
}
.site-footer .logo{color:#fff;}
.site-footer .logo-text{color:#fff;font-size:18px;}
.site-footer .logo-suffix{color:#8FD3E6;}
.footer-brand p{margin-top:16px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:14px;}
.footer-col a,.footer-col p{display:block;color:rgba(255,255,255,.72);font-size:14px;line-height:2;margin:0;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:18px 32px 26px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.55);max-width:var(--container);margin:0 auto;
}
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--brand-600);box-shadow:var(--sh-2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--t),transform var(--t),visibility var(--t),background var(--t);
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--tint-100);}

@media (max-width:1180px){
  .layout{grid-template-columns:minmax(0,1fr) 290px;gap:28px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .layout{grid-template-columns:minmax(0,1fr);}
  .sidebar{position:static;top:auto;order:2;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;padding:44px 24px 30px;}
  .footer-bottom{padding:16px 24px 24px;}
}
@media (max-width:768px){
  .page-top{padding:88px 0 0;}
  .article-head{padding:24px 20px;}
  .article-head h1{font-size:26px;}
  .article-body{padding:22px 20px;}
  .article-body .prose{max-width:100%;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .pager{grid-template-columns:minmax(0,1fr);}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:22px 20px;flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo-text{font-size:17px;}
  .article-head h1{font-size:23px;}
  .article-body p,.article-body ul li{font-size:15.5px;}
  .back-top{right:14px;bottom:14px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --brand-700:#0B4F66;
  --brand-600:#0E6F8E;
  --brand-500:#1789AE;
  --accent-600:#DB6512;
  --accent-500:#F4791F;
  --tint-100:#E8F4F7;
  --bg:#F4F8FA;
  --surface:#FFFFFF;
  --line:#E3ECF1;
  --ink-900:#14323F;
  --ink-600:#526A76;
  --ink-400:#8FA4AE;
  --ok:#1F9D6B;
  --warn:#E0A21A;
  --err:#D8483C;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(16,60,80,.05);
  --sh-2:0 8px 24px rgba(16,60,80,.07);
  --sh-3:0 16px 40px rgba(16,60,80,.10);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  color:var(--ink-900);
  background:var(--bg);
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--brand-600);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-500);}
button{font-family:inherit;}
h1,h2,h3,h4{letter-spacing:-.01em;margin:0;color:var(--ink-900);}
h1{font-size:44px;line-height:1.22;font-weight:700;}
h2{font-size:32px;line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:16px;line-height:1.5;font-weight:600;}
p{margin:0 0 16px;}
ul{margin:0 0 16px;padding-left:0;list-style:none;}
:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tint{background:var(--tint-100);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head p{color:var(--ink-600);font-size:16px;margin:12px 0 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--brand-700);background:var(--tint-100);
  border:1px solid rgba(14,111,142,.16);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
/* ------- header ------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:var(--sh-2);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-3);
}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;transition:height .25s var(--ease);}
.site-header.is-stuck .header-inner{height:60px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:50%;
  background:var(--brand-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;flex-shrink:0;
}
.logo-text{font-size:20px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap;}
.logo-suffix{color:var(--brand-600);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-600);
  padding:8px 14px;border-radius:999px;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);border-radius:2px;
}
.nav-link:hover{color:var(--brand-600);background:rgba(232,244,247,.7);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-700);background:var(--tint-100);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink-600);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--tint-100);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  align-items:center;justify-content:center;cursor:pointer;
}
/* ------- buttons ------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(244,121,31,.24);}
.btn-accent:hover{background:#FA8B37;color:#fff;transform:translateY(-2px);}
.btn-accent:active{transform:translateY(1px);}
.btn-primary{background:var(--brand-600);color:#fff;}
.btn-primary:hover{background:#1480A2;color:#fff;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:rgba(255,255,255,.7);border-color:var(--brand-500);color:var(--brand-700);}
.btn-outline:hover{background:var(--tint-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand-500);background:var(--tint-100);}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}
.btn-note{font-size:13px;color:var(--ink-400);margin-top:10px;}
/* ------- hero ------- */
.cat-hero{
  position:relative;
  padding:132px 0 56px;
  min-height:270px;
  background-image:linear-gradient(rgba(14,111,142,.12),rgba(14,111,142,.12)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center 28%;
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(20,50,63,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-600);margin-bottom:16px;}
.breadcrumb a{color:var(--ink-600);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb span.sep{color:var(--ink-400);}
.breadcrumb .current{color:var(--brand-700);font-weight:600;}
.cat-hero h1{max-width:820px;margin-bottom:14px;}
.cat-hero .lede{max-width:720px;font-size:16px;color:var(--ink-600);margin-bottom:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
/* ------- layout ------- */
.cat-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:40px;align-items:start;}
.anchor-aside{position:sticky;top:92px;}
.anchor-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px;
}
.anchor-panel h4{font-size:13px;color:var(--ink-400);letter-spacing:.06em;margin-bottom:12px;font-weight:600;}
.anchor-list a{
  display:block;font-size:15px;color:var(--ink-600);
  padding:10px 12px;border-radius:8px;border-left:2px solid transparent;
  transition:all .2s var(--ease);
}
.anchor-list a:hover,.anchor-list a.is-current{
  background:var(--tint-100);color:var(--brand-700);border-left-color:var(--brand-500);
}
.aside-card{
  margin-top:16px;background:linear-gradient(160deg,#0B4F66,#0E6F8E);
  border-radius:var(--r-card);padding:20px;color:#fff;box-shadow:var(--sh-2);
}
.aside-card h4{color:#fff;font-size:15px;margin-bottom:8px;}
.aside-card p{font-size:13px;color:rgba(255,255,255,.78);line-height:1.7;margin-bottom:14px;}
.aside-card .btn{width:100%;background:#fff;color:var(--brand-700);padding:11px 16px;font-size:14px;}
.aside-card .btn:hover{background:#F0F7FA;color:var(--brand-700);}
/* ------- split rows ------- */
.split-row{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  padding:36px 0;border-bottom:1px dashed var(--line);
  scroll-margin-top:110px;
}
.split-row:last-of-type{border-bottom:none;}
.split-row.reverse .split-media{order:2;}
.split-row.reverse .split-body{order:1;}
.split-media{position:relative;}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--sh-2);background:var(--tint-100);
}
.split-media .num-tag{
  position:absolute;top:14px;left:14px;
  background:rgba(255,255,255,.94);color:var(--brand-700);
  font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px;
  box-shadow:var(--sh-1);
}
.split-body h3{margin-bottom:12px;padding-left:0;}
.split-body p{color:var(--ink-600);font-size:16px;margin-bottom:14px;}
.point-list li{
  position:relative;padding-left:18px;font-size:15px;color:var(--ink-600);margin-bottom:8px;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--brand-500);
}
/* ------- faq ------- */
.faq-wrap{margin-top:56px;scroll-margin-top:110px;}
.faq-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;background:none;border:none;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background .2s var(--ease);
}
.faq-q:hover{background:#FAFCFD;}
.faq-q i{color:var(--brand-500);transition:transform .28s var(--ease);font-size:14px;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a p{padding:0 22px 20px;margin:0;font-size:15px;line-height:1.8;color:var(--ink-600);}
/* ------- cta ------- */
.cta-band{
  background:rgba(14,111,142,.08);
  border:1px solid rgba(14,111,142,.18);
  border-radius:var(--r-card);
  padding:32px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.cta-band h3{font-size:22px;margin-bottom:6px;}
.cta-band p{font-size:14px;color:var(--ink-600);margin:0;}
/* ------- footer ------- */
.site-footer{background:#0F2A33;color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:24px;}
.site-footer .logo-text{color:#fff;}
.site-footer .logo-suffix{color:#7FD0E6;}
.site-footer .logo-mark{background:var(--brand-500);}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin:16px 0 0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-col a,.footer-col p{display:block;font-size:14px;color:rgba(255,255,255,.72);margin:0 0 10px;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 32px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  max-width:var(--container);margin-left:auto;margin-right:auto;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.55);margin:0;}
/* ------- to top ------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;
  background:var(--brand-600);color:#fff;box-shadow:var(--sh-3);
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:all .28s var(--ease);
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:none;}
.to-top:hover{background:var(--brand-500);}
/* ------- responsive ------- */
@media (max-width:1024px){
  h1{font-size:34px;}
  h2{font-size:26px;}
  .section{padding:72px 0;}
  .container{padding:0 24px;}
  .cat-layout{grid-template-columns:1fr;gap:28px;}
  .anchor-aside{position:static;}
  .anchor-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;}
  .anchor-list a{white-space:nowrap;border-left:none;border-bottom:2px solid transparent;padding:8px 12px;}
  .anchor-list a:hover,.anchor-list a.is-current{border-left:none;border-bottom-color:var(--brand-500);}
  .aside-card{display:none;}
  .split-row{gap:28px;}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:fixed;top:56px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;margin:0;padding:8px 16px 20px;
    box-shadow:var(--sh-3);border-bottom:1px solid var(--line);
    opacity:0;transform:translateY(-12px);pointer-events:none;
    transition:opacity .24s var(--ease),transform .24s var(--ease);
    max-height:calc(100vh - 56px);overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-link{padding:0 8px;height:48px;display:flex;align-items:center;border-radius:0;border-bottom:1px solid var(--line);font-size:16px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:var(--tint-100);}
  .nav-overlay{position:fixed;inset:0;background:rgba(12,40,52,.45);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:50;}
  .nav-overlay.is-open{opacity:1;pointer-events:auto;}
}
@media (max-width:768px){
  h1{font-size:28px;line-height:1.3;}
  h2{font-size:24px;}
  .section{padding:56px 0;}
  .cat-hero{padding:108px 0 44px;min-height:230px;}
  .split-row{grid-template-columns:1fr;gap:18px;padding:28px 0;}
  .split-row.reverse .split-media{order:1;}
  .split-row.reverse .split-body{order:2;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{padding:24px;}
  .hero-actions .btn{width:100%;}
  .header-inner{height:56px;}
  .site-header.is-stuck .header-inner{height:56px;}
  .logo-text{font-size:17px;}
  .logo-mark{width:30px;height:30px;font-size:15px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .header-actions .btn-accent{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;padding:20px 16px;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category2 */
:root{
  --brand-600:#0E6F8E;
  --brand-500:#1789AE;
  --brand-700:#0B4F66;
  --accent-500:#F4791F;
  --accent-600:#DB6512;
  --tint-100:#E8F4F7;
  --bg:#F4F8FA;
  --surface:#FFFFFF;
  --line:#E3ECF1;
  --ink-900:#14323F;
  --ink-600:#526A76;
  --ink-400:#8FA4AE;
  --ok:#1F9D6B;
  --warn:#E0A21A;
  --err:#D8483C;
  --container:1200px;
  --narrow:820px;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,60,80,.05);
  --sh-2:0 8px 24px rgba(16,60,80,.07);
  --sh-3:0 16px 40px rgba(16,60,80,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  color:var(--ink-900);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--brand-700)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  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;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(244,121,31,.24)}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(244,121,31,.28)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 3px 10px rgba(244,121,31,.22)}
.btn-outline{background:rgba(255,255,255,.75);color:var(--brand-700);border-color:var(--brand-500)}
.btn-outline:hover{background:var(--tint-100);border-color:var(--brand-700);color:var(--brand-700);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--line)}
.btn-ghost:hover{background:var(--tint-100);border-color:var(--brand-500)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none}
.btn-note{font-size:13px;line-height:1.6;color:var(--ink-400);margin-top:10px}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;line-height:1.6;
  background:var(--tint-100);color:var(--brand-700);border:1px solid rgba(23,136,168,.18);
}
.badge-accent{background:rgba(244,121,31,.10);color:var(--accent-600);border-color:rgba(244,121,31,.24)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.78);border:1px solid rgba(23,136,168,.22);color:var(--brand-700);
  backdrop-filter:blur(6px);
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-500)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:68px;
  display:flex;align-items:center;
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:var(--sh-2);
  transition:height .25s var(--ease),background-color .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-stuck{
  height:60px;background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);box-shadow:var(--sh-3);
}
.nav-inner{display:flex;align-items:center;gap:24px;width:100%}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(140deg,var(--brand-500),var(--brand-700));
  color:#fff;font-weight:700;font-size:17px;
  display:grid;place-items:center;box-shadow:var(--sh-1);
}
.logo-text{font-size:20px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.logo-suffix{color:var(--brand-600);margin-left:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--ink-600);position:relative;
}
.nav-link::after{
  content:'';position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{background:var(--tint-100);color:var(--brand-700);font-weight:600}
.nav-link.is-active::after{transform:scaleX(0)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  color:var(--ink-600);border:1px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{background:var(--tint-100);color:var(--brand-700);border-color:rgba(23,136,168,.2)}
.nav-cta{height:40px;padding:0 18px;font-size:14px}
.hamburger{display:none;width:42px;height:42px;border-radius:10px;align-items:center;justify-content:center;border:1px solid var(--line);background:rgba(255,255,255,.7)}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;border-radius:2px}
.hamburger span::before,.hamburger span::after{content:'';position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}

.drawer-mask{
  position:fixed;inset:0;background:rgba(12,40,52,.45);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:#fff;border-radius:0 0 18px 18px;box-shadow:var(--sh-3);
  transform:translateY(-102%);transition:transform .3s var(--ease);
  padding:16px 0 22px;
}
.nav-drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 12px;border-bottom:1px solid var(--line)}
.drawer-close{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:var(--ink-600);border:1px solid var(--line)}
.drawer-close:hover{background:var(--tint-100);color:var(--brand-700)}
.drawer-list a{
  display:flex;align-items:center;height:48px;padding:0 24px;font-size:16px;
  color:var(--ink-900);border-bottom:1px solid var(--line);
}
.drawer-list a:hover{background:var(--tint-100);color:var(--brand-700)}
.drawer-list a.is-active{color:var(--brand-700);font-weight:600;background:var(--tint-100)}
.drawer-cta{margin:18px 24px 0;display:block;text-align:center}

/* ---------- 分类 Hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:150px 0 66px;min-height:260px;display:flex;align-items:center}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center 34%;
  filter:saturate(.85);
}
.page-hero::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(232,244,247,.94) 0%,rgba(232,244,247,.80) 48%,rgba(14,111,142,.12) 100%);
}
.page-hero .grid-dots{
  position:absolute;right:-40px;top:-30px;width:320px;height:320px;
  background-image:radial-gradient(rgba(14,111,142,.16) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:820px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;line-height:1.6;color:var(--ink-600);margin-bottom:16px}
.breadcrumb a{color:var(--ink-600)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb span.sep{color:var(--ink-400)}
.breadcrumb .current{color:var(--ink-900);font-weight:600}
.page-hero h1{font-size:40px;line-height:1.25;margin:14px 0 16px}
.page-hero .lede{font-size:17px;color:var(--ink-600);max-width:700px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- 主体布局 ---------- */
main{padding:56px 0 0}
.page-layout{display:grid;grid-template-columns:minmax(0,1fr) 272px;gap:48px;align-items:start}
.section-block{margin-bottom:72px}
.section-block:last-child{margin-bottom:0}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{color:var(--ink-600);font-size:16px}
.section-tag{font-size:13px;font-weight:600;color:var(--brand-600);letter-spacing:.02em;margin-bottom:10px;display:inline-block}

/* ---------- 概览 ---------- */
.overview-strip{
  display:flex;flex-wrap:wrap;gap:12px;padding:16px 18px;
  background:var(--tint-100);border:1px solid rgba(23,136,168,.18);border-radius:var(--r-card);
  margin-bottom:28px;
}
.overview-strip .item{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--brand-700);font-weight:500}
.overview-strip .item svg{flex-shrink:0}
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.check-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.check-card::before{
  content:'';position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--brand-500),var(--brand-600));
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,136,168,.28)}
.check-card:hover::before{transform:scaleX(1)}
.check-card h3{font-size:18px;margin-bottom:10px}
.check-card p{font-size:15px;color:var(--ink-600)}
.check-card .mini-list{margin-top:14px;display:grid;gap:8px}
.check-card .mini-list li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-600)}
.check-card .mini-list li::before{content:'';position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand-500)}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-top:6px}
.timeline::before{
  content:'';position:absolute;left:19px;top:16px;bottom:22px;width:2px;
  background:linear-gradient(180deg,rgba(23,136,168,.55),rgba(232,244,247,.9));
}
.step{position:relative;padding-left:66px;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  background:#fff;border:2px solid var(--brand-500);color:var(--brand-700);
  display:grid;place-items:center;font-weight:700;font-size:16px;z-index:2;
  box-shadow:var(--sh-1);
}
.step-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,136,168,.3)}
.step-card .step-title{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px}
.step-card h3{font-size:19px}
.step-card p{font-size:15px;color:var(--ink-600)}
.step-card p+p{margin-top:10px}
.step-card .hint{
  margin-top:14px;display:inline-flex;align-items:flex-start;gap:8px;
  font-size:13px;line-height:1.7;color:var(--brand-700);
  background:var(--tint-100);border-radius:10px;padding:10px 14px;
}

/* ---------- 验证方式 ---------- */
.verify-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.verify-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.verify-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.verify-card .thumb{aspect-ratio:16/9;overflow:hidden;background:rgba(14,111,142,.08)}
.verify-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.verify-card:hover .thumb img{transform:scale(1.03)}
.verify-body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1}
.verify-body h3{font-size:19px;margin:12px 0 10px}
.verify-body p{font-size:15px;color:var(--ink-600)}
.verify-body .mini-list{margin-top:14px;display:grid;gap:8px}
.verify-body .mini-list li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-600)}
.verify-body .mini-list li::before{content:'';position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand-500)}

/* ---------- 风险场景 ---------- */
.risk-list{display:grid;gap:14px}
.risk-item{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:18px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.risk-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,136,168,.28)}
.risk-icon{
  width:56px;height:56px;border-radius:14px;display:grid;place-items:center;
  background:var(--tint-100);color:var(--brand-700);
}
.risk-item h3{font-size:18px;margin-bottom:8px}
.risk-item p{font-size:15px;color:var(--ink-600)}
.risk-item .fix{margin-top:10px;font-size:14px;color:var(--brand-700)}
.risk-item .fix strong{font-weight:600}

/* ---------- 移动锚点条 ---------- */
.mobile-anchor{display:none}

/* ---------- 侧栏 ---------- */
.page-side{position:sticky;top:90px;display:grid;gap:20px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.side-card h3{font-size:15px;letter-spacing:.02em;color:var(--ink-900);margin-bottom:14px}
.anchor-nav{display:grid;gap:2px}
.anchor-link{
  display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--ink-600);
  border-left:2px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.anchor-link:hover{background:var(--tint-100);color:var(--brand-700)}
.anchor-link.is-current{background:var(--tint-100);color:var(--brand-700);font-weight:600;border-left-color:var(--brand-500)}
.side-help p{font-size:14px;color:var(--ink-600);margin-bottom:14px}
.side-help .btn{width:100%}

/* ---------- FAQ ---------- */
.faq-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:14px 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.faq-q:hover{background:#FAFCFD;color:var(--brand-700)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand-600);font-size:16px;line-height:1;
  transition:transform .28s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--tint-100);border-color:rgba(23,136,168,.3)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease)}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-600)}
.faq-a-inner .tip{display:block;margin-top:10px;font-size:14px;color:var(--brand-700);background:var(--tint-100);border-radius:10px;padding:10px 14px}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin:0 0 72px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  background:linear-gradient(115deg,rgba(232,244,247,.95),rgba(255,255,255,.9));
  border:1px solid rgba(23,136,168,.22);border-radius:var(--r-card);
  padding:28px 32px;box-shadow:var(--sh-1);
}
.cta-band h2{font-size:22px;margin-bottom:6px}
.cta-band p{font-size:15px;color:var(--ink-600)}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F2A33;color:rgba(255,255,255,.72);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:24px;padding-bottom:40px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-suffix{color:#7FD0E6}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;max-width:340px;color:rgba(255,255,255,.72)}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col a,.footer-col p{display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin-bottom:8px}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 32px 26px;max-width:var(--container);margin:0 auto;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.55);line-height:1.7}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-2);
  display:grid;place-items:center;color:var(--brand-700);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease),box-shadow .2s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{box-shadow:var(--sh-3);color:var(--brand-600)}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-links{gap:2px}
  .nav-link{padding:0 11px;font-size:14px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .hamburger{display:flex}
  .nav-actions .nav-cta{display:none}
  .page-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .page-side{display:none}
  .mobile-anchor{
    display:block;position:sticky;top:56px;z-index:40;
    background:rgba(255,255,255,.95);backdrop-filter:blur(10px);
    border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh-1);
    margin-bottom:28px;overflow:hidden;
  }
  .mobile-anchor .track{display:flex;gap:8px;padding:10px 12px;overflow-x:auto;scrollbar-width:none}
  .mobile-anchor .track::-webkit-scrollbar{display:none}
  .mobile-anchor a{
    flex:0 0 auto;padding:7px 14px;border-radius:999px;font-size:14px;
    color:var(--ink-600);background:var(--bg);border:1px solid var(--line);white-space:nowrap;
  }
  .mobile-anchor a.is-current{background:var(--tint-100);color:var(--brand-700);border-color:rgba(23,136,168,.3);font-weight:600}
  main{padding-top:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section-block{margin-bottom:60px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .site-header{height:56px}
  .site-header.is-stuck{height:56px}
  .logo-text{font-size:17px}
  .logo-mark{width:32px;height:32px;font-size:15px}
  .page-hero{padding:118px 0 50px;min-height:0}
  .page-hero h1{font-size:28px;line-height:1.3}
  .page-hero .lede{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto}
  .check-grid{grid-template-columns:minmax(0,1fr)}
  .verify-grid{grid-template-columns:minmax(0,1fr)}
  .risk-item{grid-template-columns:minmax(0,1fr);gap:12px}
  .risk-icon{width:48px;height:48px;border-radius:12px}
  .cta-band{padding:24px;flex-direction:column;align-items:flex-start;margin-bottom:56px}
  .cta-band .actions{width:100%}
  .cta-band .actions .btn{flex:1 1 auto}
  .section-head h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{padding:18px 24px 24px;flex-direction:column}
  .step{padding-left:56px}
  .step-num{width:36px;height:36px;font-size:15px}
  .timeline::before{left:17px}
  .faq-q{padding:14px 18px;font-size:15.5px}
  .faq-a-inner{padding:0 18px 20px}
  .to-top{right:16px;bottom:16px;width:42px;height:42px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .page-hero{padding:108px 0 44px}
  .page-hero h1{font-size:25px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .step{padding-left:50px;padding-bottom:22px}
  .step-card{padding:18px 18px}
  .step-card h3{font-size:17px}
  .check-card{padding:20px}
  .mobile-anchor{top:56px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --brand-600:#0E6F8E;
  --brand-500:#1789AE;
  --brand-700:#0B4F66;
  --accent-500:#F4791F;
  --accent-600:#DB6512;
  --tint-100:#E8F4F7;
  --bg:#F4F8FA;
  --surface:#FFFFFF;
  --line:#E3ECF1;
  --ink-900:#14323F;
  --ink-600:#526A76;
  --ink-400:#8FA4AE;
  --ok:#1F9D6B;
  --warn:#E0A21A;
  --err:#D8483C;
  --container:1200px;
  --r-card:14px;
  --r-img:12px;
  --r-hero:16px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,60,80,.05);
  --sh-2:0 8px 24px rgba(16,60,80,.07);
  --sh-3:0 16px 40px rgba(16,60,80,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%}
body{
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  color:var(--ink-900);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
ul,ol{list-style:none}
h1,h2,h3,h4{letter-spacing:-.01em;line-height:1.3}
strong{font-weight:600}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:var(--sh-2);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-stuck{background:rgba(255,255,255,.94);border-bottom-color:var(--line);box-shadow:var(--sh-3)}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px;transition:height .25s var(--ease)}
.site-header.is-stuck .nav-inner{height:60px}

.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:50%;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:700;box-shadow:var(--sh-1);
}
.logo-text{font-size:20px;font-weight:700;color:var(--ink-900)}
.logo-suffix{color:var(--brand-600)}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:999px;
  font-size:15px;color:var(--ink-600);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;
  transition:transform .25s var(--ease);
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{background:var(--tint-100);color:var(--brand-700);font-weight:600}
.nav-link.is-active::after{display:none}
.nav-link:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:2px}

.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-600);display:grid;place-items:center;cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--brand-600);border-color:var(--brand-500);background:var(--tint-100)}
.icon-btn:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:2px}
.nav-toggle{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--surface);cursor:pointer;color:var(--ink-900);place-items:center}
.nav-toggle:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:2px}

.search-panel{
  max-height:0;overflow:hidden;background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;transition:max-height .28s var(--ease),border-color .28s var(--ease);
}
.search-panel.is-open{max-height:110px;border-bottom-color:var(--line)}
.search-form{display:flex;gap:10px;align-items:center;padding-top:12px;padding-bottom:14px}
.search-form input{
  flex:1;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);background:var(--surface);
  padding:0 14px;font-size:15px;
}
.search-form input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(23,136,168,.18)}

.drawer-mask{
  position:fixed;inset:0;background:rgba(12,40,52,.45);z-index:98;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;right:0;z-index:99;background:#fff;
  transform:translateY(-100%);transition:transform .3s var(--ease);
  padding:16px 16px 22px;box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:10px;border-bottom:1px solid var(--line)}
.drawer a.drawer-link{
  display:flex;align-items:center;min-height:48px;font-size:15px;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link.is-active{color:var(--brand-700);font-weight:600}
.drawer .drawer-cta{margin-top:16px;width:100%}

/* ---------- 按钮 ---------- */
.btn{
  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;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:2px}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(244,121,31,.22)}
.btn-accent:hover{background:#F98A38;transform:translateY(-2px);box-shadow:0 10px 22px rgba(244,121,31,.26)}
.btn-accent:active{transform:translateY(-1px)}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:#12809F;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--brand-700)}
.btn-ghost:hover{border-color:var(--brand-500);background:var(--tint-100)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 分类 Hero ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);display:flex;align-items:center;min-height:240px;padding:46px 0 50px}
.cat-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:url("/assets/images/backpic/back-2.png") center 30%/cover no-repeat;
  filter:saturate(.85);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(120deg,rgba(14,111,142,.12) 0%,rgba(14,111,142,.05) 45%,rgba(232,244,247,.92) 100%);
}
.cat-hero .container{position:relative;z-index:2;max-width:1120px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:14px}
.breadcrumb a{color:var(--ink-600);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand-600);text-decoration:underline}
.breadcrumb .current{color:var(--ink-900);font-weight:600}
.cat-hero h1{font-size:40px;line-height:1.24;font-weight:700;color:var(--ink-900)}
.cat-hero .lede{margin-top:14px;max-width:660px;font-size:16px;line-height:1.8;color:var(--ink-600)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- 锚点条（移动端） ---------- */
.anchor-bar{display:none;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);position:sticky;top:56px;z-index:80}
.anchor-scroll{display:flex;gap:8px;overflow-x:auto;padding-top:12px;padding-bottom:12px;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-cell{flex:0 0 auto;padding:7px 14px;border-radius:999px;background:var(--tint-100);color:var(--brand-700);font-size:13px;white-space:nowrap;transition:background .2s var(--ease),color .2s var(--ease)}
.anchor-cell:hover{background:#D6EBF1}

/* ---------- 主布局 ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 264px;gap:44px;align-items:start;padding:56px 0 72px}
.content-col{min-width:0}
.side-col{position:sticky;top:92px;display:grid;gap:16px}

.section{padding:44px 0 6px}
.section:first-child{padding-top:0}
.section + .section{border-top:1px solid var(--line);margin-top:30px}
.section-head{margin-bottom:26px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--tint-100);border:1px solid rgba(23,136,168,.16);
  padding:4px 12px;border-radius:999px;margin-bottom:12px;
}
.section h2{font-size:32px;font-weight:700;line-height:1.3;color:var(--ink-900)}
.section-lede{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-600);max-width:720px}
.section h3{font-size:20px;font-weight:600;line-height:1.4}

/* ---------- 信息条 ---------- */
.strip-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.strip{
  display:flex;align-items:center;gap:12px;
  background:var(--tint-100);border:1px solid rgba(23,136,168,.16);
  border-radius:999px;padding:13px 20px;font-size:15px;color:var(--ink-900);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.strip:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.strip .ico{
  width:30px;height:30px;border-radius:50%;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:14px;flex:0 0 auto;
}

/* ---------- 对照表 ---------- */
.table-wrap{
  overflow-x:auto;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);-webkit-overflow-scrolling:touch;
}
table.cmp{width:100%;min-width:780px;border-collapse:collapse;font-size:15px}
.cmp thead th{
  background:var(--tint-100);color:var(--brand-700);text-align:left;font-size:14px;font-weight:600;
  padding:16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.cmp tbody td{padding:16px;border-bottom:1px solid var(--line);color:var(--ink-600);line-height:1.7;vertical-align:top}
.cmp tbody tr:nth-child(odd){background:#FAFCFD}
.cmp tbody tr:hover{background:var(--tint-100)}
.cmp tbody tr:last-child td{border-bottom:0}
.cmp td:first-child{font-weight:600;color:var(--ink-900);width:20%}
.cmp th:nth-child(2),.cmp td:nth-child(2){width:22%}
.cmp th:nth-child(3),.cmp td:nth-child(3){width:40%}
.cmp th:last-child,.cmp td:last-child{width:18%;white-space:nowrap}
.tag-self{display:inline-block;font-size:13px;font-weight:600;color:var(--ok);background:rgba(31,157,107,.10);border-radius:999px;padding:2px 10px}
.tag-need{display:inline-block;font-size:13px;font-weight:600;color:var(--accent-600);background:rgba(244,121,31,.10);border-radius:999px;padding:2px 10px}
.table-note{margin-top:12px;font-size:13px;color:var(--ink-400)}

/* ---------- 双栏取舍 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.compare-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--brand-500);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.compare-card:hover::before{transform:scaleX(1)}
.compare-card.is-featured{border-color:var(--brand-500);box-shadow:var(--sh-2)}
.compare-card.is-featured::before{transform:scaleX(1)}
.compare-badge{
  display:inline-block;font-size:13px;font-weight:600;border-radius:999px;padding:3px 12px;
  background:var(--tint-100);color:var(--brand-700);margin-bottom:14px;
}
.compare-card.is-featured .compare-badge{background:rgba(244,121,31,.12);color:var(--accent-600)}
.compare-card h3{margin-bottom:6px}
.compare-card .sub{font-size:14px;color:var(--ink-400);margin-bottom:16px}
.kv{display:grid;grid-template-columns:72px 1fr;gap:12px;padding:13px 0;border-top:1px dashed var(--line);font-size:15px}
.kv:first-of-type{border-top:0}
.kv dt{color:var(--brand-700);font-weight:600}
.kv dd{color:var(--ink-600);line-height:1.7}

/* ---------- 图文块 ---------- */
.media-block{display:grid;grid-template-columns:5fr 7fr;gap:30px;align-items:center}
.media-block img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--sh-2);background:rgba(14,111,142,.08);
}
.media-text p{font-size:15px;color:var(--ink-600);line-height:1.85}
.media-text p + p{margin-top:12px}
.check-list{display:grid;gap:10px;margin-top:16px}
.check-list li{position:relative;padding-left:24px;font-size:15px;color:var(--ink-600);line-height:1.75}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--brand-500);
}
.check-list li strong{color:var(--ink-900)}

/* ---------- FAQ ---------- */
.faq-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:18px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);
  cursor:pointer;transition:background .2s var(--ease);
}
.faq-q:hover{background:var(--tint-100)}
.faq-q:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:-3px}
.faq-icon{flex:0 0 auto;width:22px;height:22px;color:var(--brand-600);transition:transform .28s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-600)}

/* ---------- 侧栏 ---------- */
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.side-card h4{font-size:15px;font-weight:600;color:var(--ink-900)}
.anchor-list{display:grid;gap:2px;margin-top:12px}
.anchor-list a{
  display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--ink-600);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.anchor-list a:hover{background:var(--tint-100);color:var(--brand-700)}
.anchor-list a.is-current{background:var(--tint-100);color:var(--brand-700);font-weight:600}
.side-card p{font-size:14px;color:var(--ink-600);line-height:1.75;margin-top:10px}
.side-card .btn{margin-top:14px;width:100%}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin-top:8px;padding:34px 36px;border-radius:18px;
  background:linear-gradient(135deg,rgba(14,111,142,.09),rgba(23,136,168,.05));
  border:1px solid rgba(23,136,168,.18);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:24px;font-weight:700;line-height:1.35}
.cta-band p{margin-top:8px;font-size:15px;color:var(--ink-600)}
.cta-band .btn{flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F2A33;color:rgba(255,255,255,.72);margin-top:72px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:24px;padding:56px 32px 40px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-suffix{color:#7FD3E8}
.footer-brand p{margin-top:16px;max-width:340px;line-height:1.85;color:rgba(255,255,255,.72)}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-col a,.footer-col p{display:block;padding:5px 0;color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:18px 32px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom p{max-width:640px}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--sh-2);
  color:var(--brand-600);display:grid;place-items:center;cursor:pointer;z-index:90;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease),background .2s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--tint-100);border-color:var(--brand-500)}
.to-top:focus-visible{outline:3px solid rgba(23,136,168,.35);outline-offset:2px}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .layout{gap:32px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .nav-actions .btn{display:none}
  .nav-inner{height:56px}
  .site-header.is-stuck .nav-inner{height:56px}
  .logo-text{font-size:18px}
  .cat-hero{padding:36px 0 40px;min-height:0}
  .cat-hero h1{font-size:32px}
  .anchor-bar{display:block;top:56px}
  .layout{grid-template-columns:1fr;gap:0;padding:32px 0 56px}
  .side-col{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;padding:44px 24px 32px;gap:24px;row-gap:32px}
  .footer-bottom{padding:16px 24px}
}
@media (max-width:767px){
  .strip-grid{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .media-block{grid-template-columns:1fr;gap:20px}
  .section h2{font-size:26px}
  .section{padding:36px 0 6px}
  .table-wrap{border-radius:12px}
  .cmp td:first-child,.cmp th:first-child{position:sticky;left:0;z-index:2;box-shadow:2px 0 0 var(--line)}
  .cmp td:first-child{background:#fff}
  .cmp tbody tr:nth-child(odd) td:first-child{background:#FAFCFD}
  .cmp th:first-child{background:var(--tint-100)}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a-inner{padding:0 18px 18px}
  .to-top{right:16px;bottom:20px}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .cat-hero h1{font-size:28px;line-height:1.3}
  .cat-hero .lede{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;padding:36px 16px 26px}
  .footer-bottom{padding:16px;flex-direction:column;gap:8px}
  .search-form{flex-wrap:wrap}
  .search-form .btn{width:100%}
}
@media (max-width:420px){
  .section h2{font-size:23px}
  .strip{padding:12px 16px;font-size:14px}
  .anchor-cell{font-size:12px;padding:6px 12px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}