/* roulang page: index */
:root{
  --brand-600:#1667D9;
  --brand-700:#0F52B5;
  --brand-050:#EAF2FE;
  --accent-500:#FF7A2F;
  --accent-050:#FFF3E8;
  --ink-900:#0E2233;
  --ink-600:#4A5E73;
  --ink-400:#8A9AAB;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --line:#E3EAF2;
  --success:#12A66A;
  --danger:#E5484D;
  --r-card:18px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:16px;
  --sh-1:0 1px 2px rgba(14,34,51,.05);
  --sh-2:0 6px 20px rgba(14,34,51,.07);
  --sh-3:0 16px 40px rgba(14,34,51,.10);
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"SF Mono","JetBrains Mono","Consolas","Menlo",monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--ink-900);font-weight:700;letter-spacing:-.01em;margin:0;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- 按钮体系 ---------- */
.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;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary,.btn-primary:focus{
  background:var(--brand-600);border-color:var(--brand-600);color:#fff;box-shadow:var(--sh-2);
}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-accent{background:var(--accent-500);border-color:var(--accent-500);color:#fff;box-shadow:var(--sh-2);}
.btn-accent:hover{background:#ef6a1e;border-color:#ef6a1e;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-900);}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand-600);color:var(--brand-700);}
.btn-outline-light-2{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
.btn-outline-light-2:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.nav-bar{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:-.02em;}
.brand-mark{flex-shrink:0;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1;}
.nav-links a{
  position:relative;display:block;padding:8px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-600);white-space:nowrap;
}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-050);}
.nav-links a.active{color:var(--brand-600);font-weight:600;}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 10px 0 14px;min-width:224px;
  background:#F2F6FB;border:1px solid var(--line);border-radius:var(--r-input);
  color:var(--ink-400);font-size:14px;transition:all .2s ease;
}
.cmd-search:hover{border-color:#c8d6e6;background:#fff;}
.cmd-search i{font-size:13px;}
.cmd-search input{
  border:0;background:transparent;outline:none;flex:1;min-width:0;
  font-size:14px;color:var(--ink-900);font-family:var(--sans);
}
.cmd-search kbd{
  font-family:var(--mono);font-size:11px;color:var(--ink-400);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:2px 6px;
}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
}
.offcanvas{background:var(--surface);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-body{padding:20px;}
.mobile-nav li+li{border-top:1px solid var(--line);}
.mobile-nav a{display:block;padding:14px 4px;font-size:16px;color:var(--ink-900);font-weight:500;}
.mobile-nav a.active{color:var(--brand-600);font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-700);
  font-size:13px;font-weight:600;margin-bottom:16px;
}
.section-tag.is-accent{background:var(--accent-050);color:#C2521A;}
.section-head h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-600);}
.eyebrow{font-family:var(--mono);font-size:13px;color:var(--ink-400);letter-spacing:.04em;}

/* ---------- Hero ---------- */
.hero{padding:72px 0 64px;background:
  radial-gradient(900px 420px at 88% -10%, rgba(22,103,217,.10), transparent 60%),
  radial-gradient(600px 320px at 4% 10%, rgba(255,122,47,.08), transparent 62%);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink-600);box-shadow:var(--sh-1);margin-bottom:20px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(18,166,106,.14);}
.hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.2;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--brand-600);}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-600);max-width:600px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px;}
.trust-row{display:flex;flex-wrap:wrap;gap:0;}
.trust-item{padding:0 24px;border-left:1px solid var(--line);}
.trust-item:first-child{padding-left:0;border-left:0;}
.trust-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--ink-900);line-height:1.2;}
.trust-num small{font-size:14px;font-weight:600;margin-left:2px;}
.trust-label{font-size:13px;color:var(--ink-400);margin-top:2px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/12;object-fit:cover;
  border-radius:20px;box-shadow:var(--sh-3);
}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;box-shadow:var(--sh-3);min-width:186px;
}
.hero-float .tag{
  font-size:12px;font-weight:700;color:#C2521A;background:var(--accent-050);
  border-radius:999px;padding:2px 10px;display:inline-block;margin-bottom:8px;
}
.hero-float .num{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--ink-900);}
.hero-float .txt{font-size:12px;color:var(--ink-400);}

/* ---------- 促销条 ---------- */
.promo-strip{
  background:linear-gradient(90deg,var(--accent-500),#F2600F);
  color:#fff;
}
.promo-inner{
  min-height:54px;display:flex;align-items:center;justify-content:center;
  gap:18px;flex-wrap:wrap;padding:10px 0;font-size:15px;
}
.promo-inner strong{font-weight:700;}
.promo-time{
  font-family:var(--mono);font-weight:700;font-size:16px;
  background:rgba(255,255,255,.18);border-radius:8px;padding:3px 12px;letter-spacing:.06em;
}
.promo-link{
  color:#fff;font-weight:600;text-decoration:underline;
  text-underline-offset:3px;text-decoration-thickness:1px;
}
.promo-link:hover{color:#fff;opacity:.86;}

/* ---------- 优惠阶梯 ---------- */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:end;}
.ladder-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--sh-2);transition:all .2s ease;
  display:flex;flex-direction:column;
}
.ladder-item:hover{box-shadow:var(--sh-3);transform:translateY(-3px);}
.ladder-item .lv{
  font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-600);margin-bottom:10px;
}
.ladder-item h3{font-size:19px;margin-bottom:12px;}
.ladder-item .cond{
  font-size:13px;color:var(--ink-400);padding-bottom:14px;margin-bottom:14px;
  border-bottom:1px dashed var(--line);
}
.ladder-item ul{display:grid;gap:8px;margin-bottom:20px;flex:1;}
.ladder-item li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-600);}
.ladder-item li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:3px;
  background:var(--brand-050);border:1.5px solid var(--brand-600);
}
.ladder-item .who{font-size:13px;color:var(--ink-400);margin-bottom:16px;}
.ladder-item:nth-child(1){min-height:280px;}
.ladder-item:nth-child(2){min-height:320px;}
.ladder-item:nth-child(3){min-height:360px;border-color:var(--brand-600);box-shadow:0 12px 30px rgba(22,103,217,.14);}
.ladder-item:nth-child(4){min-height:400px;}
.ladder-item .btn{margin-top:auto;}

/* ---------- 套餐对比矩阵 ---------- */
.matrix-wrap{overflow-x:auto;border-radius:var(--r-card);box-shadow:var(--sh-2);background:#fff;}
table.matrix{width:100%;min-width:760px;border-collapse:collapse;background:#fff;}
table.matrix th,table.matrix td{
  padding:18px 22px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);
}
table.matrix thead th{
  background:#F3F7FC;color:var(--ink-900);font-weight:700;font-size:15px;
  border-bottom:1px solid var(--line);vertical-align:middle;
}
table.matrix tbody th{font-weight:600;color:var(--ink-900);background:#fff;}
table.matrix tbody tr:hover td,table.matrix tbody tr:hover th{background:#FAFCFE;}
table.matrix td{color:var(--ink-600);}
table.matrix .col-pick{background:var(--brand-050);position:relative;}
table.matrix thead .col-pick{background:#DEEBFB;}
table.matrix .reco{
  display:inline-block;margin-left:8px;font-size:11px;font-weight:700;color:#fff;
  background:var(--accent-500);border-radius:999px;padding:2px 9px;vertical-align:middle;
}
table.matrix .check{color:var(--success);font-weight:700;}
table.matrix .mute{color:var(--ink-400);}
.matrix-note{font-size:13px;color:var(--ink-400);margin-top:14px;}

/* ---------- 限时专区 ---------- */
.flash{background:var(--ink-900);color:#fff;}
.flash h2{color:#fff;}
.flash .section-tag{background:rgba(255,255,255,.12);color:#fff;}
.flash-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;}
.flash p{color:rgba(255,255,255,.72);}
.flash-clock{
  display:flex;gap:14px;margin:26px 0 30px;
}
.flash-clock div{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:14px;padding:14px 18px;text-align:center;min-width:84px;
}
.flash-clock .n{font-family:var(--mono);font-size:28px;font-weight:700;line-height:1.1;}
.flash-clock .l{font-size:12px;color:rgba(255,255,255,.55);margin-top:4px;}
.flash-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);padding:32px;
}
.flash-card h3{color:#fff;font-size:20px;margin-bottom:10px;}
.quota{margin:22px 0 26px;}
.quota-head{display:flex;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:10px;}
.quota-head b{font-family:var(--mono);color:#fff;}
.quota-bar{height:10px;border-radius:999px;background:rgba(255,255,255,.14);overflow:hidden;}
.quota-bar span{display:block;height:100%;width:72%;border-radius:999px;background:linear-gradient(90deg,var(--accent-500),#FFAE6B);}

/* ---------- 咨询表单 ---------- */
.consult-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:start;}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px;box-shadow:var(--sh-2);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--ink-600);font-weight:600;margin-bottom:8px;}
.form-control,.form-select{
  width:100%;height:48px;padding:0 14px;font-size:15px;color:var(--ink-900);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-input);
  transition:all .18s ease;box-shadow:none;
}
.form-control:focus,.form-select:focus{
  border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(22,103,217,.14);outline:none;
}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-select{
  appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' fill='none' stroke='%234A5E73' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;padding-right:40px;
}
.field.has-error .form-control,.field.has-error .form-select{
  border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.12);
}
.field .err{display:none;font-size:12px;color:var(--danger);margin-top:6px;}
.field.has-error .err{display:block;}
.form-privacy{font-size:12px;color:var(--ink-400);line-height:1.65;margin-top:14px;}
.form-msg{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-input);
  background:var(--brand-050);color:var(--brand-700);font-size:14px;font-weight:600;
}
.form-msg.show{display:block;}
.consult-side h2{margin-bottom:16px;}
.consult-list{display:grid;gap:16px;margin-top:26px;}
.consult-list li{display:flex;gap:14px;align-items:flex-start;}
.consult-list .ic{
  flex-shrink:0;width:40px;height:40px;border-radius:12px;background:var(--brand-050);
  color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:15px;
}
.consult-list h4{font-size:16px;margin-bottom:3px;color:var(--ink-900);}
.consult-list p{font-size:14px;color:var(--ink-600);}

/* ---------- 内容卡片 ---------- */
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-2);transition:all .2s ease;
  display:flex;flex-direction:column;height:100%;
}
.post-card:hover{box-shadow:var(--sh-3);transform:translateY(-3px);}
.post-cover{position:relative;display:block;overflow:hidden;}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-badge{
  position:absolute;left:14px;top:14px;background:var(--brand-600);color:#fff;
  font-size:12px;font-weight:600;border-radius:999px;padding:4px 12px;
}
.post-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.post-title{font-size:17px;line-height:1.5;margin-bottom:10px;}
.post-title a{color:var(--ink-900);}
.post-title a:hover{color:var(--brand-600);}
.post-excerpt{
  font-size:14px;color:var(--ink-600);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-400);font-family:var(--mono);
}
.post-more{font-family:var(--sans);font-size:13px;font-weight:600;color:var(--brand-600);}
.post-more:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.empty-state{
  text-align:center;padding:64px 24px;background:#fff;border:1px dashed var(--line);
  border-radius:var(--r-card);
}
.empty-state i{font-size:44px;color:var(--ink-400);display:block;margin-bottom:16px;}
.empty-state p{font-size:15px;color:var(--ink-600);margin-bottom:20px;}

/* ---------- 分类入口 ---------- */
.cats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-2);transition:all .2s ease;display:block;
}
.cat-card:hover{box-shadow:var(--sh-3);transform:translateY(-3px);}
.cat-card img{width:100%;aspect-ratio:3/2;object-fit:cover;}
.cat-card .cat-body{padding:24px;}
.cat-card h3{font-size:19px;margin-bottom:10px;color:var(--ink-900);}
.cat-card p{font-size:14px;color:var(--ink-600);margin-bottom:16px;}
.cat-card .cat-link{font-size:14px;font-weight:600;color:var(--brand-600);}
.cat-card:hover .cat-link{color:var(--brand-700);}

/* ---------- FAQ ---------- */
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.accordion-button{
  background:transparent;box-shadow:none;border:0;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink-900);
  display:flex;align-items:center;gap:16px;
}
.accordion-button:not(.collapsed){color:var(--brand-600);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  margin-left:auto;background-image:none;
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--ink-400);transition:transform .2s ease;
  display:flex;align-items:center;justify-content:center;width:auto;height:auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--brand-600);}
.faq-num{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--brand-600);flex-shrink:0;}
.accordion-body{padding:0 0 24px 38px;font-size:15px;color:var(--ink-600);line-height:1.85;}

/* ---------- 页尾 CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--brand-700),var(--brand-600));
  border-radius:24px;padding:56px;color:#fff;text-align:center;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,34px);margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.82);max-width:620px;margin:0 auto 28px;}
.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:96px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 48px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--ink-600);max-width:300px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--ink-900);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-600);}
.footer-col a:hover{color:var(--brand-600);}
.footer-sub p{font-size:14px;color:var(--ink-600);margin-bottom:14px;}
.footer-sub form{display:flex;gap:8px;}
.footer-sub input{
  flex:1;height:44px;padding:0 14px;border:1px solid var(--line);
  border-radius:var(--r-input);font-size:14px;outline:none;min-width:0;
}
.footer-sub input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(22,103,217,.14);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-400);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-links a{padding:8px 9px;font-size:14px;}
  .cmd-search{min-width:170px;}
  .hero-grid{gap:36px;}
  .ladder{grid-template-columns:repeat(2,1fr);}
  .ladder-item{min-height:auto !important;}
}
@media (max-width:991px){
  .nav-links,.cmd-search,.nav-actions .link-quiet{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:52px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-float{left:auto;right:14px;bottom:-18px;}
  .section{padding:72px 0;}
  .flash-grid{grid-template-columns:1fr;gap:32px;}
  .consult-grid{grid-template-columns:1fr;gap:32px;}
  .cats{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px;}
  table.matrix{min-width:680px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .hero h1{font-size:clamp(26px,7.4vw,34px);}
  .hero-cta .btn{width:100%;}
  .trust-row{gap:16px;}
  .trust-item{padding:0 16px;}
  .trust-num{font-size:22px;}
  .ladder{grid-template-columns:1fr;}
  .cats{grid-template-columns:1fr;}
  .cta-band{padding:36px 22px;border-radius:18px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .flash-clock div{min-width:70px;padding:12px 12px;}
  .flash-clock .n{font-size:22px;}
  .accordion-body{padding-left:0;}
  .promo-inner{font-size:14px;gap:10px;}
  table.matrix{min-width:600px;}
}
@media (max-width:400px){
  .brand-text{font-size:17px;}
}

/* roulang page: category1 */
:root{
  --brand-600:#1667D9;
  --brand-700:#0F52B5;
  --brand-050:#EAF2FE;
  --accent-500:#FF7A2F;
  --accent-050:#FFF3E8;
  --ink-900:#0E2233;
  --ink-600:#4A5E73;
  --ink-400:#8A9AAB;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --line:#E3EAF2;
  --success:#12A66A;
  --danger:#E5484D;

  --r-card:18px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:16px;

  --sh-1:0 1px 2px rgba(14,34,51,.05);
  --sh-2:0 6px 20px rgba(14,34,51,.07);
  --sh-3:0 16px 40px rgba(14,34,51,.10);

  --mono:"SF Mono","JetBrains Mono",Consolas,"Courier New",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4{color:var(--ink-900);margin:0;letter-spacing:-0.01em;font-weight:700}
h1{font-size:clamp(30px,4.2vw,50px);line-height:1.2}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.3}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.nav-bar{display:flex;align-items:center;gap:28px;height:70px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand-mark{flex:0 0 auto}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:0}
.nav-links{display:flex;align-items:center;gap:4px;margin:0 0 0 8px}
.nav-links li a{
  display:block;padding:8px 12px;font-size:14.5px;font-weight:500;
  color:var(--ink-600);border-radius:8px;position:relative;
}
.nav-links li a:hover{color:var(--brand-600);background:var(--brand-050)}
.nav-links li a.active{color:var(--brand-600);font-weight:700}
.nav-links li a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.cmd-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--ink-400);transition:border-color .2s ease,box-shadow .2s ease;
}
.cmd-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px var(--brand-050);background:var(--surface)}
.cmd-search input{
  border:0;background:transparent;outline:none;font-size:14px;color:var(--ink-900);
  width:172px;font-family:var(--sans);
}
.cmd-search input::placeholder{color:var(--ink-400)}
.cmd-search kbd{
  font-family:var(--mono);font-size:11px;color:var(--ink-400);
  border:1px solid var(--line);border-radius:6px;padding:2px 6px;background:var(--surface);
}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:var(--surface);
  border-radius:var(--r-btn);color:var(--ink-900);font-size:16px;
}

/* ---------- 按钮 ---------- */
.btn{transition:all .2s ease;font-weight:600;border-radius:var(--r-btn)}
.btn-primary{
  background:var(--brand-600);border:1px solid var(--brand-600);color:#fff;
  box-shadow:var(--sh-2);padding:11px 22px;font-size:15px;
}
.btn-primary:hover,.btn-primary:focus{
  background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);
}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1)}
.btn-accent{
  background:var(--accent-500);border:1px solid var(--accent-500);color:#fff;
  box-shadow:var(--sh-2);padding:11px 22px;font-size:15px;
}
.btn-accent:hover{background:#ef6b1f;border-color:#ef6b1f;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-ghost{
  background:var(--surface);border:1px solid var(--line);color:var(--ink-900);
  padding:11px 22px;font-size:15px;
}
.btn-ghost:hover{border-color:var(--brand-600);background:var(--brand-050);color:var(--brand-700)}
.btn-sm{padding:8px 16px;font-size:14px}
.link-quiet{text-decoration:none}
.link-quiet:hover{color:var(--brand-600)!important}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-400);padding:0;margin:0;list-style:none}
.crumb a{color:var(--ink-600)}
.crumb a:hover{color:var(--brand-600)}
.crumb li::after{content:"/";margin-left:8px;color:var(--ink-400)}
.crumb li:last-child::after{content:"";margin:0}
.crumb li:last-child{color:var(--ink-900);font-weight:600}

/* ---------- 分类 banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  background:
    linear-gradient(115deg,rgba(234,242,254,.94) 0%,rgba(246,249,252,.88) 52%,rgba(255,243,232,.86) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  padding:56px 0 64px;
  border-bottom:1px solid var(--line);
}
.banner-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-050);color:var(--brand-700);
  border:1px solid rgba(22,103,217,.18);
  font-size:13px;font-weight:600;padding:5px 14px;border-radius:999px;margin-bottom:18px;
}
.tag-pill i{font-size:11px}
.banner-lead{margin-top:16px;font-size:16.5px;max-width:56ch;color:var(--ink-600)}
.banner-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.banner-shot{
  position:relative;border-radius:20px;overflow:hidden;
  box-shadow:var(--sh-3);background:var(--surface);border:1px solid var(--line);
}
.banner-shot img{width:100%;aspect-ratio:16/9;object-fit:cover}
.float-card{
  position:absolute;left:-18px;bottom:-18px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--sh-3);padding:12px 16px;display:flex;align-items:center;gap:12px;
}
.float-card .num{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--brand-600);line-height:1.2}
.float-card .cap{font-size:12.5px;color:var(--ink-400);line-height:1.4}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:700;color:var(--brand-600);
  letter-spacing:.06em;margin-bottom:12px;font-family:var(--mono);
}
.section-head p{margin-top:14px;font-size:16px}

/* ---------- 图文交错行 ---------- */
.zigzag{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.zigzag + .zigzag{margin-top:72px}
.zigzag.reverse .zz-media{order:2}
.zigzag.reverse .zz-body{order:1}
.zz-media{position:relative}
.zz-media img{
  width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.zz-media .step-badge{
  position:absolute;top:16px;left:16px;
  background:var(--brand-600);color:#fff;font-family:var(--mono);font-size:13px;font-weight:700;
  padding:6px 12px;border-radius:999px;letter-spacing:.02em;box-shadow:var(--sh-2);
}
.zz-media.alt .step-badge{background:var(--accent-500)}
.zz-body h3{font-size:clamp(21px,2.2vw,26px);margin-bottom:14px}
.zz-body p{font-size:15.5px;margin-bottom:12px}
.check-list{margin-top:20px;display:grid;gap:10px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-600)}
.check-list li i{color:var(--success);margin-top:5px;font-size:13px}
.zz-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.chip{
  font-size:13px;font-weight:600;color:var(--ink-600);
  background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:5px 12px;
}
.chip strong{color:var(--brand-600);font-family:var(--mono)}

/* ---------- 指标条 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow:hidden;
}
.metric{padding:28px 26px}
.metric + .metric{border-left:1px solid var(--line)}
.metric .big{font-family:var(--mono);font-size:32px;font-weight:700;color:var(--ink-900);line-height:1.15}
.metric .big span{font-size:15px;color:var(--ink-400);margin-left:4px}
.metric .txt{margin-top:8px;font-size:14px;color:var(--ink-600)}

/* ---------- 通道对照 ---------- */
.compare-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.track{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--sh-2);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.track:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:rgba(22,103,217,.3)}
.track .track-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.track .track-name{font-size:17px;font-weight:700;color:var(--ink-900)}
.badge-soft{
  font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-700);
}
.badge-flame{background:var(--accent-050);color:#C4551A}
.track dl{margin:0;font-size:14.5px}
.track dt{font-size:12.5px;color:var(--ink-400);font-weight:600;margin-top:12px}
.track dd{margin:2px 0 0;color:var(--ink-600)}
.track .track-foot{margin-top:auto;padding-top:20px}
.track.is-featured{border-color:var(--brand-600);box-shadow:0 12px 34px rgba(22,103,217,.16)}

/* ---------- FAQ ---------- */
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.accordion-button{
  background:transparent;color:var(--ink-900);font-weight:600;font-size:16.5px;
  padding:22px 44px 22px 0;box-shadow:none!important;gap:14px;align-items:flex-start;
}
.accordion-button .faq-no{
  font-family:var(--mono);font-size:14px;font-weight:700;color:var(--brand-600);
  flex:0 0 auto;padding-top:3px;
}
.accordion-button:not(.collapsed){color:var(--brand-700);background:transparent}
.accordion-button::after{
  background-image:none;content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:8px;top:24px;transition:transform .18s ease;width:auto;height:auto;
  font-size:15px;color:var(--ink-400);
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--brand-600)}
.accordion-body{padding:0 44px 24px 30px;font-size:15px;color:var(--ink-600);animation:fadeUp .18s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- 咨询 ---------- */
.consult-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-2);
}
.form-label{font-size:13px;font-weight:600;color:var(--ink-600);margin-bottom:6px}
.form-control,.form-select{
  height:48px;border-radius:var(--r-input);border:1px solid var(--line);
  font-size:15px;color:var(--ink-900);background:var(--surface);padding:0 14px;
}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;line-height:1.6}
.form-control:focus,.form-select:focus{
  border-color:var(--brand-600);box-shadow:0 0 0 3px var(--brand-050);
}
.form-control.is-invalid,.form-select.is-invalid{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.12)}
.err-msg{display:none;font-size:12.5px;color:var(--danger);margin-top:4px}
.err-msg.show{display:block}
.form-note{font-size:12.5px;color:var(--ink-400);margin-top:12px}
.consult-points{display:grid;gap:18px;margin-top:26px}
.cp{display:flex;gap:14px;align-items:flex-start}
.cp .ico{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-050);color:var(--brand-600);font-size:16px;
}
.cp h4{font-size:16px;margin-bottom:4px}
.cp p{font-size:14.5px;margin:0}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:linear-gradient(120deg,#0E2233 0%,#123A63 100%);
  border-radius:22px;padding:48px;color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,47,.35),transparent 68%);
}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.78);margin-top:14px;max-width:60ch}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;position:relative;z-index:1}
.btn-on-dark{background:#fff;color:var(--ink-900);border:1px solid #fff;padding:11px 22px;font-weight:600}
.btn-on-dark:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-050)}
.btn-outline-light2{background:transparent;border:1px solid rgba(255,255,255,.42);color:#fff;padding:11px 22px;font-weight:600}
.btn-outline-light2:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--surface);border-top:1px solid var(--line);margin-top:88px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand p{font-size:14px;margin-top:16px;max-width:34ch;color:var(--ink-600)}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14px;color:var(--ink-600)}
.footer-col ul a:hover{color:var(--brand-600)}
.footer-sub p{font-size:14px;margin:0 0 14px}
.footer-sub form{display:flex;gap:8px}
.footer-sub input{
  flex:1;height:44px;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 12px;font-size:14px;color:var(--ink-900);outline:none;min-width:0;
}
.footer-sub input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px var(--brand-050)}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--ink-400);
}

/* ---------- 移动端抽屉 ---------- */
.offcanvas{background:var(--surface)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas-title{font-size:17px;font-weight:700;color:var(--ink-900)}
.offcanvas-body .m-nav{display:grid;gap:6px;margin-bottom:22px}
.offcanvas-body .m-nav a{
  display:block;padding:12px 14px;border-radius:12px;font-size:15px;font-weight:600;
  color:var(--ink-900);background:var(--bg);
}
.offcanvas-body .m-nav a.active{color:var(--brand-700);background:var(--brand-050)}
.offcanvas-body .m-nav a:hover{background:var(--brand-050);color:var(--brand-700)}
.offcanvas-body .btn{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-links li a{padding:8px 9px;font-size:14px}
  .cmd-search input{width:130px}
  .zigzag{gap:40px}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-toggle{display:grid;place-items:center}
  .cmd-search{display:none}
  .section{padding:72px 0}
  .banner-grid{grid-template-columns:1fr;gap:36px}
  .float-card{left:16px;bottom:16px}
  .zigzag{grid-template-columns:1fr;gap:28px}
  .zigzag.reverse .zz-media{order:0}
  .zigzag.reverse .zz-body{order:0}
  .metrics{grid-template-columns:1fr}
  .metric + .metric{border-left:0;border-top:1px solid var(--line)}
  .compare-wrap{grid-template-columns:1fr}
  .consult-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .page-banner{padding:40px 0 48px}
  .brand-text{font-size:15.5px}
  .cta-band{padding:32px 24px;border-radius:18px}
  .form-card{padding:24px 20px}
  h1{font-size:clamp(28px,7vw,34px)}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .footer-grid{grid-template-columns:1fr}
  .banner-cta .btn{width:100%;text-align:center}
  .float-card{padding:10px 12px}
  .float-card .num{font-size:17px}
}

/* roulang page: article */
:root{
  --brand-600:#1667D9;
  --brand-700:#0F52B5;
  --brand-050:#EAF2FE;
  --accent-500:#FF7A2F;
  --accent-050:#FFF3E8;
  --ink-900:#0E2233;
  --ink-600:#4A5E73;
  --ink-400:#8A9AAB;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --line:#E3EAF2;
  --success:#12A66A;
  --danger:#E5484D;
  --sh-1:0 1px 2px rgba(14,34,51,.05);
  --sh-2:0 6px 20px rgba(14,34,51,.07);
  --sh-3:0 16px 40px rgba(14,34,51,.10);
  --r-card:18px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:16px;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"SF Mono","JetBrains Mono","Cascadia Mono",Consolas,monospace;
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink-600);
  font-family:var(--font-sans);font-size:16px;line-height:1.75;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}

/* ============ 按钮 ============ */
.btn,.btn:focus,.btn:active{
  border-radius:var(--r-btn);font-weight:600;font-size:15px;line-height:1;
  padding:12px 20px;border:1px solid transparent;box-shadow:var(--sh-1);
  transition:all .2s ease;text-decoration:none;display:inline-flex;align-items:center;gap:8px;justify-content:center;
}
.btn-primary,.btn-primary:focus{
  background:var(--brand-600);color:#fff;border-color:var(--brand-600);box-shadow:var(--sh-2);
}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1);}
.btn-ghost,.btn-ghost:focus{
  background:#fff;color:var(--ink-900);border-color:var(--line);box-shadow:var(--sh-1);
}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand-600);color:var(--brand-700);}
.btn-accent,.btn-accent:focus{background:var(--accent-500);color:#fff;border-color:var(--accent-500);box-shadow:var(--sh-2);}
.btn-accent:hover{background:#ea6a1f;border-color:#ea6a1f;color:#fff;transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-lg{padding:14px 26px;font-size:16px;}
.btn-block{width:100%;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.nav-bar{display:flex;align-items:center;gap:24px;height:70px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{flex:0 0 auto;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.02em;white-space:nowrap;}
.brand:hover .brand-text{color:var(--brand-600);}
.nav-links{display:flex;align-items:center;gap:4px;margin:0;padding:0;}
.nav-links li{list-style:none;}
.nav-links a{
  display:block;padding:8px 12px;font-size:14.5px;font-weight:600;color:var(--ink-600);
  border-radius:8px;position:relative;transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-050);}
.nav-links a.active{color:var(--brand-600);}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 10px 0 12px;
  background:var(--bg);border:1px solid var(--line);border-radius:10px;min-width:230px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.cmd-search:focus-within{border-color:var(--brand-600);background:#fff;box-shadow:var(--sh-1);}
.cmd-search i{color:var(--ink-400);font-size:13px;}
.cmd-search input{border:0;background:transparent;outline:none;flex:1;min-width:0;font-size:13.5px;color:var(--ink-900);}
.cmd-search input::placeholder{color:var(--ink-400);}
.cmd-search kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--ink-400);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:2px 6px;
}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;
  color:var(--ink-900);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);}

.mobile-nav{width:min(340px,88vw);}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.mobile-nav .offcanvas-body{padding:20px;}
.mobile-links{display:flex;flex-direction:column;gap:2px;margin-bottom:18px;}
.mobile-links a{
  display:block;padding:12px 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-900);
}
.mobile-links a:hover,.mobile-links a.active{background:var(--brand-050);color:var(--brand-700);}
.mobile-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:12px;padding:0 12px;height:44px;margin-bottom:16px;background:var(--bg);}
.mobile-search i{color:var(--ink-400);}
.mobile-search input{border:0;background:transparent;outline:none;flex:1;min-width:0;}

/* ============ 文章头部 ============ */
.article-hero{
  padding:26px 0 40px;border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(246,249,252,.94),rgba(246,249,252,.99)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-400);margin-bottom:20px;}
.breadcrumb-list li{display:inline-flex;align-items:center;gap:8px;max-width:100%;}
.breadcrumb-list li::after{content:"/";color:var(--ink-400);}
.breadcrumb-list li:last-child::after{display:none;}
.breadcrumb-list a{color:var(--ink-600);font-weight:500;}
.breadcrumb-list a:hover{color:var(--brand-600);}
.breadcrumb-list .current{color:var(--ink-400);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head{max-width:820px;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-050);color:var(--brand-700);
  font-size:12.5px;font-weight:700;padding:6px 12px;border-radius:999px;margin-bottom:16px;
}
.badge-cat.accent{background:var(--accent-050);color:#C4560F;}
h1.article-title{
  font-size:clamp(26px,3.4vw,40px);line-height:1.28;font-weight:700;margin:0 0 18px;color:var(--ink-900);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-400);}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta span + span::before{content:"·";color:var(--ink-400);margin-right:4px;}

/* ============ 正文布局 ============ */
.article-section{padding:56px 0 80px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;align-items:start;}
.article-main{max-width:820px;width:100%;min-width:0;}
.article-body{font-size:16px;line-height:1.92;color:var(--ink-600);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  position:relative;font-size:clamp(21px,2.2vw,27px);line-height:1.4;font-weight:700;color:var(--ink-900);
  margin:44px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:3px;background:var(--brand-600);
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--ink-900);margin:30px 0 12px;}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--ink-900);margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;padding-left:2px;}
.article-body li::marker{color:var(--brand-600);}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--brand-700);}
.article-body strong{color:var(--ink-900);font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;background:var(--brand-050);border-left:3px solid var(--brand-600);
  border-radius:0 12px 12px 0;color:var(--ink-600);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;width:100%;height:auto;margin:22px 0;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:var(--bg);color:var(--ink-900);font-weight:600;}
.article-body tr:hover td{background:#FBFDFF;}
.article-body code{
  font-family:var(--font-mono);font-size:13.5px;background:var(--bg);border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;color:var(--brand-700);
}
.article-body pre{background:var(--ink-900);color:#E9F1FA;padding:18px;border-radius:12px;overflow:auto;font-size:13.5px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* 目录 */
.article-aside{display:none;}
.toc-card{position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);}
.toc-card h4{font-size:13px;color:var(--ink-400);font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{display:block;font-size:13.5px;color:var(--ink-600);padding:7px 10px;border-radius:8px;border-left:2px solid transparent;line-height:1.5;}
.toc-list a:hover{background:var(--brand-050);color:var(--brand-700);border-left-color:var(--brand-600);}
.toc-mobile{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:6px 16px;margin-bottom:26px;box-shadow:var(--sh-1);}
.toc-mobile summary{cursor:pointer;font-size:14px;font-weight:600;color:var(--ink-900);padding:12px 0;list-style:none;display:flex;align-items:center;justify-content:space-between;}
.toc-mobile summary::-webkit-details-marker{display:none;}
.toc-mobile summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--ink-400);transition:transform .2s ease;}
.toc-mobile[open] summary::after{transform:rotate(180deg);}
.toc-mobile .toc-list{padding-bottom:12px;}

/* 空态 */
.article-empty{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;box-shadow:var(--sh-1);
}
.article-empty i{font-size:48px;color:var(--ink-400);margin-bottom:16px;display:block;}
.article-empty h2{font-size:20px;margin-bottom:10px;}
.article-empty p{font-size:14.5px;color:var(--ink-600);max-width:420px;margin:0 auto 22px;}

/* 标签与操作条 */
.after-body{margin-top:40px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;
  background:var(--bg);border:1px solid var(--line);font-size:13px;color:var(--ink-600);font-weight:500;
  transition:all .18s ease;
}
.tag:hover{border-color:var(--brand-600);color:var(--brand-700);background:var(--brand-050);}
.action-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}

/* ============ 相关推荐 ============ */
.related{padding:0 0 80px;}
.section-head{margin-bottom:32px;max-width:720px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.32;margin-bottom:10px;}
.section-head p{font-size:15px;color:var(--ink-600);margin:0;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-cover img{transform:scale(1.04);}
.card-cover .badge-overlay{
  position:absolute;top:12px;left:12px;background:var(--brand-600);color:#fff;font-size:11.5px;font-weight:700;
  padding:5px 10px;border-radius:999px;
}
.card-cover .badge-overlay.accent{background:var(--accent-500);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;}
.card-body h3 a{color:var(--ink-900);}
.card-body h3 a:hover{color:var(--brand-600);}
.card-body p{font-size:14px;line-height:1.7;color:var(--ink-600);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-400);}
.card-foot a{font-weight:600;font-size:13.5px;color:var(--brand-600);}
.card-foot a:hover{color:var(--brand-700);}

/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(135deg,#0E2233,#123A63 62%,#1667D9);
  border-radius:22px;padding:44px 40px;color:#fff;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:32px;align-items:center;box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.32;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.cta-wrap{padding:0 0 80px;}

/* ============ FAQ ============ */
.faq-section{padding:0 0 88px;}
.accordion-item{border:0;border-top:1px solid var(--line);background:transparent;}
.accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-header{margin:0;}
.accordion-button{
  background:transparent;box-shadow:none;padding:20px 44px 20px 46px;font-size:16px;font-weight:600;color:var(--ink-900);
  border-radius:0;position:relative;line-height:1.6;
}
.accordion-button:not(.collapsed){background:transparent;color:var(--brand-700);box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:var(--line);}
.accordion-button::after{display:none;}
.accordion-button::before{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--ink-400);
  position:absolute;right:12px;transition:transform .2s ease;
}
.accordion-button:not(.collapsed)::before{transform:rotate(180deg);color:var(--brand-600);}
.accordion-button .q-num{
  position:absolute;left:0;top:50%;transform:translateY(-50%);
  font-family:var(--font-mono);font-size:14px;color:var(--brand-600);font-weight:700;
}
.accordion-body{padding:0 44px 22px 46px;font-size:15px;line-height:1.85;color:var(--ink-600);}
.accordion-collapse{transition:height .22s ease;}

/* ============ 表单 ============ */
.form-control,.form-select{
  height:48px;border-radius:var(--r-input);border:1px solid var(--line);background:#fff;
  font-size:15px;color:var(--ink-900);padding:0 14px;box-shadow:none;transition:border-color .18s ease,box-shadow .18s ease;
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;}
.form-control:focus,.form-select:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(22,103,217,.14);}
.form-control::placeholder{color:var(--ink-400);}
.form-label{font-size:13px;color:var(--ink-600);font-weight:600;margin-bottom:6px;}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:60px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;}
.footer-brand p{font-size:14px;color:var(--ink-600);margin:14px 0 0;max-width:320px;line-height:1.8;}
.footer-col h4{font-size:14px;color:var(--ink-900);margin-bottom:16px;font-weight:700;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-600);}
.footer-col a:hover{color:var(--brand-600);}
.footer-sub p{font-size:13.5px;color:var(--ink-400);margin:0 0 14px;line-height:1.7;}
.footer-sub form{display:flex;gap:8px;}
.footer-sub input{
  flex:1;min-width:0;height:44px;border-radius:var(--r-input);border:1px solid var(--line);
  padding:0 12px;font-size:14px;outline:none;background:var(--bg);
}
.footer-sub input:focus{border-color:var(--brand-600);background:#fff;box-shadow:0 0 0 3px rgba(22,103,217,.12);}
.footer-sub .btn{padding:0 18px;height:44px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:var(--ink-400);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-aside{display:none;}
}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 250px;gap:56px;}
  .article-aside{display:block;}
  .toc-mobile{display:none;}
}
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-sub{grid-column:span 3;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .cmd-search{display:none;}
  .nav-toggle{display:flex;}
  .nav-bar{height:64px;}
  .article-section{padding:44px 0 64px;}
  .cta-band{grid-template-columns:1fr;padding:32px 26px;}
  .container{padding:0 20px;}
}
@media (max-width:767px){
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-sub{grid-column:span 2;}
  .article-hero{padding:20px 0 30px;}
  .article-meta{font-size:13px;}
  .article-body{font-size:15.5px;line-height:1.85;}
  .breadcrumb-list .current{max-width:180px;}
  .cta-wrap,.related,.faq-section{padding-bottom:60px;}
  .accordion-button{padding:18px 40px 18px 38px;font-size:15px;}
  .accordion-body{padding:0 20px 20px 38px;font-size:14.5px;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  h1.article-title{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-sub{grid-column:span 1;}
  .footer-sub form{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .action-row .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --brand-600:#1667D9;
  --brand-700:#0F52B5;
  --brand-050:#EAF2FE;
  --accent-500:#FF7A2F;
  --accent-050:#FFF3E8;
  --ink-900:#0E2233;
  --ink-600:#4A5E73;
  --ink-400:#8A9AAB;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --line:#E3EAF2;
  --success:#12A66A;
  --danger:#E5484D;
  --r-card:18px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:16px;
  --sh-1:0 1px 2px rgba(14,34,51,.05);
  --sh-2:0 6px 20px rgba(14,34,51,.07);
  --sh-3:0 16px 40px rgba(14,34,51,.10);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"SF Mono","JetBrains Mono",Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.mono{font-family:var(--font-mono);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.ml-auto{margin-left:auto;}
.section{padding:96px 0;}
.section-sm{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-050);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow.accent{color:#B5490F;background:var(--accent-050);}
.section-head h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-600);margin:0;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.nav-bar{display:flex;align-items:center;gap:20px;height:70px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{flex:none;display:block;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;margin:0;}
.nav-links a{
  display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:14.5px;font-weight:600;color:var(--ink-600);position:relative;
}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-050);}
.nav-links a.active{color:var(--brand-600);}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:14px;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  background:var(--bg);border:1px solid var(--line);border-radius:10px;
  padding:7px 10px;min-width:250px;transition:border-color .2s ease,box-shadow .2s ease;
}
.cmd-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px var(--brand-050);}
.cmd-search i{font-size:13px;color:var(--ink-400);}
.cmd-search input{
  border:0;background:transparent;outline:none;flex:1;min-width:0;
  font-size:13.5px;color:var(--ink-900);
}
.cmd-search input::placeholder{color:var(--ink-400);}
.cmd-search kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--ink-400);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:2px 6px;
}
.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;
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  --bs-btn-bg:var(--brand-600);
  --bs-btn-border-color:var(--brand-600);
  --bs-btn-color:#fff;
  --bs-btn-hover-bg:var(--brand-700);
  --bs-btn-hover-border-color:var(--brand-700);
  --bs-btn-hover-color:#fff;
  --bs-btn-active-bg:var(--brand-700);
  --bs-btn-active-border-color:var(--brand-700);
  --bs-btn-active-color:#fff;
  --bs-btn-disabled-bg:var(--brand-600);
  --bs-btn-disabled-border-color:var(--brand-600);
  --bs-btn-border-radius:10px;
  box-shadow:var(--sh-2);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(1px);}
.btn-accent{
  background:var(--accent-500);border-color:var(--accent-500);color:#fff;box-shadow:var(--sh-2);
}
.btn-accent:hover{background:#E96A22;border-color:#E96A22;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-ghost{
  background:#fff;border:1px solid var(--line);color:var(--ink-900);box-shadow:var(--sh-1);
}
.btn-ghost:hover{border-color:var(--brand-600);background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost-light{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.btn-sm{padding:9px 16px;font-size:14px;}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.85);margin:0 0 18px;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:rgba(255,255,255,.5);}
.crumbs a{color:rgba(255,255,255,.9);}
.crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(14,34,51,.92) 0%,rgba(15,82,181,.86) 60%,rgba(22,103,217,.72) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  color:#fff;padding:88px 0 76px;
}
.page-banner h1{
  color:#fff;font-size:clamp(30px,4.4vw,46px);line-height:1.2;
  margin-bottom:18px;max-width:16em;
}
.page-banner .lead{font-size:16.5px;color:rgba(255,255,255,.88);max-width:720px;margin-bottom:26px;}
.banner-facts{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.banner-facts span{
  font-size:13.5px;font-weight:600;color:#fff;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  border-radius:999px;padding:6px 14px;
}
.banner-cta{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 指标带 ---------- */
.fact-strip{
  background:var(--surface);border-bottom:1px solid var(--line);
}
.fact-strip .container{display:flex;flex-wrap:wrap;}
.fact-item{
  flex:1 1 220px;padding:26px 24px;border-right:1px solid var(--line);
}
.fact-item:last-child{border-right:0;}
.fact-item .val{
  font-family:var(--font-mono);font-size:20px;font-weight:700;color:var(--brand-600);
  display:block;margin-bottom:6px;
}
.fact-item .lab{font-size:14px;color:var(--ink-600);margin:0;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;}
.tl-item{position:relative;display:grid;grid-template-columns:88px 1fr;gap:26px;padding-bottom:34px;}
.tl-item::before{
  content:"";position:absolute;left:43px;top:62px;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--brand-600),var(--line));
  opacity:.55;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:88px;height:56px;border-radius:14px;background:var(--brand-050);color:var(--brand-600);
  font-family:var(--font-mono);font-size:21px;font-weight:700;
  display:flex;align-items:center;justify-content:center;flex:none;
}
.tl-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--sh-2);
  transition:transform .2s ease,box-shadow .2s ease;
}
.tl-body:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
.tl-body h3{font-size:20px;margin-bottom:10px;}
.tl-body p{font-size:15px;margin-bottom:14px;}
.tl-list{display:grid;gap:8px;margin-bottom:18px;}
.tl-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--ink-600);}
.tl-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;border-radius:3px;
  background:var(--brand-600);opacity:.85;
}

/* ---------- 深色诊断区 ---------- */
.diagnose{background:var(--ink-900);color:rgba(255,255,255,.78);}
.diagnose h2,.diagnose h3{color:#fff;}
.diagnose .section-head p{color:rgba(255,255,255,.72);}
.diag-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:44px;align-items:center;}
.diag-figure{margin:0;}
.diag-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);
  border:1px solid rgba(255,255,255,.14);
}
.diag-figure figcaption{font-size:13px;color:rgba(255,255,255,.55);margin-top:12px;}
.diag-list{display:grid;gap:14px;}
.diag-list li{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:16px 18px;font-size:15px;
  display:flex;gap:14px;align-items:flex-start;
}
.diag-list i{color:var(--accent-500);font-size:15px;margin-top:4px;}
.diag-list strong{color:#fff;font-weight:600;}

/* ---------- 证据区 ---------- */
.evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start;}
.stat-block{display:grid;gap:16px;}
.stat-row{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-2);display:flex;align-items:baseline;gap:18px;
}
.stat-row .num{font-family:var(--font-mono);font-size:32px;font-weight:700;color:var(--brand-600);line-height:1;}
.stat-row .txt{font-size:14.5px;color:var(--ink-600);}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent-500);
  border-radius:var(--r-card);padding:26px 28px;box-shadow:var(--sh-2);
}
.quote-card p{font-size:15.5px;color:var(--ink-600);}
.quote-card .who{font-size:13.5px;color:var(--ink-400);margin:0;}
.quote-card + .quote-card{margin-top:18px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.accordion{--bs-accordion-border-color:var(--line);--bs-accordion-bg:transparent;--bs-accordion-border-radius:0;}
.accordion-item{border:0;border-top:1px solid var(--line);background:transparent;}
.accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-button{
  display:flex;align-items:center;gap:16px;
  background:transparent;box-shadow:none;color:var(--ink-900);
  font-size:17px;font-weight:600;padding:22px 8px;
}
.accordion-button:not(.collapsed){background:transparent;color:var(--brand-600);}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-600);outline-offset:-2px;}
.accordion-button::after{
  background-image:none;
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--ink-400);
  width:auto;height:auto;transition:transform .25s ease,color .25s ease;
  margin-left:auto;flex:none;
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--brand-600);}
.faq-num{
  font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--brand-600);
  background:var(--brand-050);border-radius:8px;padding:4px 9px;flex:none;
}
.accordion-body{padding:0 8px 26px 60px;font-size:15px;color:var(--ink-600);}
.accordion-collapse{transition:height .22s ease;}

/* ---------- CTA / 表单 ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--brand-700) 0%,var(--brand-600) 100%);
  border-radius:24px;padding:52px 46px;color:#fff;box-shadow:var(--sh-3);
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,32px);margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.85);font-size:15.5px;}
.cta-points{display:grid;gap:10px;margin-top:22px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.9);}
.cta-points i{color:var(--accent-500);margin-top:4px;}
.form-card{
  background:#fff;border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-3);
}
.form-card label{display:block;font-size:13px;font-weight:600;color:var(--ink-600);margin-bottom:7px;}
.form-card .form-control,.form-card .form-select{
  width:100%;height:46px;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 14px;font-size:15px;color:var(--ink-900);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-card textarea.form-control{height:auto;min-height:88px;padding:12px 14px;line-height:1.6;}
.form-card .form-control:focus,.form-card .form-select:focus{
  border-color:var(--brand-600);box-shadow:0 0 0 3px var(--brand-050);outline:none;
}
.field{margin-bottom:16px;}
.form-note{font-size:12.5px;color:var(--ink-400);margin:12px 0 0;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:44px;}
.footer-brand p{font-size:14px;color:var(--ink-600);margin-top:16px;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-600);}
.footer-col a:hover{color:var(--brand-600);}
.footer-sub p{font-size:14px;color:var(--ink-600);margin:0 0 14px;}
.footer-sub form{display:flex;gap:10px;}
.footer-sub input{
  flex:1;min-width:0;height:44px;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 14px;font-size:14px;outline:none;
}
.footer-sub input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px var(--brand-050);}
.footer-sub .btn{padding:0 20px;height:44px;font-size:14px;flex:none;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:var(--ink-400);
}

/* ---------- 移动端抽屉 ---------- */
.offcanvas{border-left:1px solid var(--line);}
.offcanvas-header{border-bottom:1px solid var(--line);}
.offcanvas-body{padding:24px;}
.mobile-links{display:grid;gap:4px;margin-bottom:24px;}
.mobile-links a{
  display:block;padding:12px 14px;border-radius:10px;font-size:15.5px;font-weight:600;
  color:var(--ink-600);
}
.mobile-links a:hover{background:var(--brand-050);color:var(--brand-600);}
.mobile-links a.active{background:var(--brand-050);color:var(--brand-600);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .cmd-search{min-width:190px;}
  .nav-links a{padding:8px 9px;font-size:14px;}
}
@media (max-width:991px){
  .nav-links,.cmd-search,.nav-actions .link-quiet{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:72px 0;}
  .section-sm{padding:56px 0;}
  .diag-grid{grid-template-columns:1fr;gap:32px;}
  .evidence-grid{grid-template-columns:1fr;gap:28px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:40px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .page-banner{padding:64px 0 56px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .tl-item{grid-template-columns:1fr;gap:14px;}
  .tl-item::before{display:none;}
  .tl-num{width:64px;height:48px;font-size:18px;}
  .tl-body{padding:20px;}
  .fact-item{flex:1 1 100%;border-right:0;border-bottom:1px solid var(--line);}
  .fact-item:last-child{border-bottom:0;}
  .accordion-body{padding:0 8px 22px 8px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .form-card{padding:22px;}
  .footer-sub form{flex-wrap:wrap;}
  .footer-sub .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --brand-600:#1667D9;
  --brand-700:#0F52B5;
  --brand-050:#EAF2FE;
  --accent-500:#FF7A2F;
  --accent-050:#FFF3E8;
  --ink-900:#0E2233;
  --ink-600:#4A5E73;
  --ink-400:#8A9AAB;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --line:#E3EAF2;
  --success:#12A66A;
  --danger:#E5484D;
  --sh-1:0 1px 2px rgba(14,34,51,.05);
  --sh-2:0 6px 20px rgba(14,34,51,.07);
  --sh-3:0 16px 40px rgba(14,34,51,.10);
  --r-card:18px;
  --r-btn:10px;
  --r-input:12px;
  --r-img:16px;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"SF Mono","JetBrains Mono",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:15.5px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;}
a:hover{color:var(--brand-700);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{color:var(--ink-900);letter-spacing:-.01em;margin:0;font-weight:700;}
h1{font-size:clamp(28px,4.2vw,46px);line-height:1.22;}
h2{font-size:clamp(23px,2.8vw,32px);line-height:1.3;}
h3{font-size:19px;line-height:1.4;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%;}
@media (min-width:1400px){.container{max-width:1260px;}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-weight:600;font-size:15px;line-height:1;
  padding:14px 24px;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1);}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:var(--sh-2);}
.btn-accent:hover{background:#ef6a1c;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-900);box-shadow:var(--sh-1);}
.btn-ghost:hover{border-color:var(--brand-600);background:var(--brand-050);color:var(--brand-700);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}
.btn-lg{padding:16px 30px;font-size:16px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.nav-bar{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand-text{font-weight:800;font-size:18px;color:var(--ink-900);letter-spacing:-.02em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0;}
.nav-links li{list-style:none;}
.nav-links a{
  position:relative;display:inline-block;
  padding:9px 12px;border-radius:10px;
  font-size:14.5px;font-weight:600;color:var(--ink-600);
  transition:color .18s ease,background-color .18s ease;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-050);}
.nav-links a.active{color:var(--brand-600);}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;
  height:2px;border-radius:2px;background:var(--brand-600);
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  background:var(--bg);border:1px solid var(--line);border-radius:10px;
  padding:7px 10px;transition:border-color .2s ease,box-shadow .2s ease;
}
.cmd-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(22,103,217,.12);background:#fff;}
.cmd-search i{color:var(--ink-400);font-size:13px;}
.cmd-search input{border:0;background:transparent;outline:none;width:172px;font-size:13.5px;color:var(--ink-900);}
.cmd-search input::placeholder{color:var(--ink-400);}
.cmd-search kbd{
  font-family:var(--mono);font-size:11px;color:var(--ink-400);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:2px 6px;white-space:nowrap;
}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-900);cursor:pointer;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);}
@media (max-width:1199px){
  .cmd-search{display:none;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-sm{display:none;}
}
@media (max-width:520px){
  .nav-bar{height:64px;gap:12px;}
  .brand-text{font-size:16px;}
  .container{padding-left:16px;padding-right:16px;}
}
.offcanvas{--bs-offcanvas-width:290px;}
.mobile-nav-list{list-style:none;padding:0;margin:0 0 18px;}
.mobile-nav-list li{border-bottom:1px solid var(--line);}
.mobile-nav-list a{display:block;padding:14px 4px;font-weight:600;color:var(--ink-900);}
.mobile-nav-list a.active{color:var(--brand-600);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:54px 0 62px;
  background-image:linear-gradient(115deg,rgba(246,249,252,.96) 0%,rgba(246,249,252,.86) 45%,rgba(234,242,254,.78) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover,cover;
  background-position:center,center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-90px;top:-70px;width:300px;height:300px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,122,47,.14),rgba(255,122,47,0) 68%);
  pointer-events:none;
}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;margin:0 0 20px;font-size:13.5px;color:var(--ink-400);}
.breadcrumb-list li{display:flex;align-items:center;gap:8px;}
.breadcrumb-list li+li::before{content:"/";color:var(--ink-400);}
.breadcrumb-list a{color:var(--ink-600);font-weight:600;}
.breadcrumb-list a:hover{color:var(--brand-600);}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-050);color:var(--brand-700);
  font-size:13px;font-weight:700;padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.page-hero h1{max-width:820px;margin-bottom:16px;}
.page-hero .lede{max-width:680px;font-size:16.5px;color:var(--ink-600);margin-bottom:26px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:14px;}
.fact-pill{
  display:flex;flex-direction:column;gap:2px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:12px 18px;box-shadow:var(--sh-1);min-width:132px;
}
.fact-pill .num{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--brand-600);line-height:1.2;}
.fact-pill .cap{font-size:12.5px;color:var(--ink-400);}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head .kicker{
  display:inline-block;font-family:var(--mono);font-size:12.5px;font-weight:700;
  color:var(--brand-600);letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{margin-bottom:0;font-size:16px;}
@media (max-width:991px){.section{padding:72px 0;}.section.tight{padding:52px 0;}}
@media (max-width:767px){.section{padding:56px 0;}.page-hero{padding:40px 0 48px;}}

/* ---------- filter tabs ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-bottom:22px;
}
.filter-tab{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line);background:#fff;color:var(--ink-600);
  font-size:14px;font-weight:600;padding:9px 16px;border-radius:999px;cursor:pointer;
  transition:all .18s ease;
}
.filter-tab:hover{border-color:var(--brand-600);color:var(--brand-600);}
.filter-tab.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;box-shadow:var(--sh-2);}
.filter-tab .cnt{font-family:var(--mono);font-size:12px;opacity:.75;}
.filter-count{margin-left:auto;font-size:13px;color:var(--ink-400);}
.filter-count b{font-family:var(--mono);color:var(--brand-600);}

/* ---------- spec table ---------- */
.table-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow:hidden;
}
.table-wrap{overflow-x:auto;}
.spec-table{width:100%;min-width:860px;border-collapse:collapse;font-size:14.5px;}
.spec-table thead th{
  background:var(--bg);
  color:var(--ink-900);font-size:13px;font-weight:700;letter-spacing:.02em;
  text-align:left;padding:16px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.spec-table tbody td{
  padding:18px 20px;border-bottom:1px solid var(--line);
  vertical-align:top;color:var(--ink-600);
}
.spec-table tbody tr:last-child td{border-bottom:0;}
.spec-table tbody tr:hover{background:#F9FBFE;}
.spec-table .row-name{color:var(--ink-900);font-weight:700;font-size:15px;}
.spec-table .row-name span{display:block;font-weight:500;font-size:13px;color:var(--ink-400);margin-top:4px;}
.spec-table code{
  font-family:var(--mono);font-size:13px;background:var(--brand-050);
  color:var(--brand-700);border-radius:6px;padding:2px 7px;white-space:nowrap;
}
.tag-chip{
  display:inline-block;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:999px;background:var(--brand-050);color:var(--brand-700);
  white-space:nowrap;
}
.tag-chip.warm{background:var(--accent-050);color:#C4551A;}
.state{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--success);white-space:nowrap;}
.state::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--success);}
.state.warn{color:#C4551A;}
.state.warn::before{background:var(--accent-500);}
.table-note{padding:16px 20px;font-size:13px;color:var(--ink-400);background:var(--bg);border-top:1px solid var(--line);}

/* ---------- compare matrix (误区分歧) ---------- */
.matrix{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-2);
}
.matrix-head{
  padding:16px 22px;font-size:14px;font-weight:700;letter-spacing:.02em;
  border-bottom:1px solid var(--line);
}
.matrix-head.bad{background:#FFF6F6;color:#B4343A;}
.matrix-head.good{background:var(--brand-050);color:var(--brand-700);border-left:1px solid var(--line);}
.matrix-cell{padding:20px 22px;border-bottom:1px solid var(--line);font-size:14.5px;}
.matrix-cell:nth-child(4n+4){border-left:1px solid var(--line);}
.matrix-cell h3{font-size:16px;margin-bottom:8px;}
.matrix-cell p{margin:0;color:var(--ink-600);}
.matrix-cell .why{display:block;margin-top:8px;font-size:13px;color:var(--ink-400);}
@media (max-width:767px){
  .matrix{grid-template-columns:1fr;}
  .matrix-head.good,.matrix-cell:nth-child(4n+4){border-left:0;}
}

/* ---------- steps strip ---------- */
.steps-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#D5E2F3;}
.step-card .idx{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--brand-600);
  background:var(--brand-050);display:inline-block;padding:3px 10px;border-radius:999px;margin-bottom:14px;
}
.step-card h3{font-size:17px;margin-bottom:8px;}
.step-card p{font-size:14.5px;margin:0;}
@media (max-width:991px){.steps-strip{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.steps-strip{grid-template-columns:1fr;}}

/* ---------- feature card with image ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.media-frame{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-2);aspect-ratio:16/10;background:var(--brand-050);
}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.check-list{list-style:none;padding:0;margin:22px 0 0;}
.check-list li{
  position:relative;padding-left:30px;margin-bottom:12px;font-size:15px;color:var(--ink-600);
}
.check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;color:var(--brand-600);font-size:13px;
}
@media (max-width:991px){
  .split{grid-template-columns:1fr;gap:30px;}
}

/* ---------- FAQ accordion ---------- */
.faq-wrap{max-width:900px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  background:transparent;border:0;cursor:pointer;
  padding:20px 24px;min-height:60px;
  color:var(--ink-900);font-size:16px;font-weight:600;
  transition:background-color .18s ease;
}
.faq-q:hover{background:#F9FBFE;}
.faq-q .no{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--brand-600);flex:0 0 auto;}
.faq-q .txt{flex:1;}
.faq-q .arrow{
  flex:0 0 auto;color:var(--ink-400);font-size:13px;
  transition:transform .22s ease,color .22s ease;
}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);color:var(--brand-600);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 24px 22px 60px;font-size:15px;color:var(--ink-600);}
@media (max-width:520px){
  .faq-q{padding:16px;font-size:15px;}
  .faq-a-inner{padding:0 16px 18px 16px;}
}

/* ---------- consult ---------- */
.consult-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;}
.consult-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-2);
}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:13px;font-weight:600;color:var(--ink-600);margin-bottom:6px;}
.form-control,.form-select{
  width:100%;height:46px;border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;padding:0 14px;color:var(--ink-900);font-size:14.5px;
  transition:border-color .18s ease,box-shadow .18s ease;
  appearance:none;
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238A9AAB' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;
}
.form-control:focus,.form-select:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(22,103,217,.14);
}
.form-control.err,.form-select.err{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.12);}
.err-msg{display:none;font-size:12.5px;color:var(--danger);margin-top:5px;}
.err-msg.show{display:block;}
.privacy{font-size:12.5px;color:var(--ink-400);margin:12px 0 0;}
.consult-points{list-style:none;padding:0;margin:0;}
.consult-points li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);
}
.consult-points li:last-child{border-bottom:0;}
.consult-points i{color:var(--brand-600);font-size:16px;margin-top:4px;}
.consult-points b{display:block;color:var(--ink-900);font-size:15.5px;margin-bottom:4px;}
.consult-points span{font-size:14px;color:var(--ink-600);}
@media (max-width:991px){.consult-grid{grid-template-columns:1fr;gap:28px;}}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(120deg,#0F52B5,#1667D9 55%,#2A7BEA);
  border-radius:22px;padding:44px 40px;color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;gap:28px;justify-content:space-between;
  box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:clamp(21px,2.2vw,26px);margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.86);margin:0;font-size:15px;max-width:560px;}
.cta-band .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.45);color:#fff;box-shadow:none;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;color:#fff;}
.cta-band .btn-white{background:#fff;color:var(--brand-700);box-shadow:var(--sh-2);}
.cta-band .btn-white:hover{background:#F2F7FF;color:var(--brand-700);transform:translateY(-1px);}
@media (max-width:767px){.cta-band{padding:30px 22px;border-radius:18px;}}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--ink-400);max-width:300px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--ink-600);transition:color .18s ease;}
.footer-col a:hover{color:var(--brand-600);}
.footer-sub p{font-size:13.5px;color:var(--ink-400);margin-bottom:12px;}
.footer-sub form{display:flex;gap:8px;}
.footer-sub input{
  flex:1;height:44px;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 12px;font-size:14px;color:var(--ink-900);background:#fff;
}
.footer-sub input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(22,103,217,.14);}
.footer-sub .btn{height:44px;padding:0 18px;font-size:14px;flex:0 0 auto;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid var(--line);padding:20px 0;font-size:13px;color:var(--ink-400);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .footer-sub form{flex-direction:column;}
  .footer-sub .btn{width:100%;}
}

/* ---------- misc ---------- */
.eyebrow-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.mini-tag{
  font-size:12.5px;font-weight:600;color:var(--ink-600);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 12px;
}
.mini-tag i{color:var(--brand-600);margin-right:6px;}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.stat-box{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.stat-box .v{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--ink-900);line-height:1.2;}
.stat-box .v em{font-style:normal;font-size:14px;color:var(--ink-400);margin-left:2px;}
.stat-box .k{font-size:13.5px;color:var(--ink-400);margin-top:6px;}
@media (max-width:991px){.stat-row{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.stat-row{grid-template-columns:1fr;}}