/* roulang page: index */
:root{
  --ink:#12141A;
  --brand:#0E9F8E;
  --brand-deep:#0A6F64;
  --brand-soft:#E4F4F1;
  --accent:#FF6A2B;
  --accent-hover:#E85A1C;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D7;
  --muted:#6B6F76;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-hover:0 12px 32px rgba(18,20,26,.08);
  --font-serif:Georgia,"Songti SC","SimSun",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.78;
  line-break:strict;
  text-wrap:pretty;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-inline:20px}
@media(min-width:640px){.container{padding-inline:32px}}
@media(min-width:1024px){.container{padding-inline:40px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:#E8E6E1;font-size:12.5px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px}
.topbar-domain{letter-spacing:.06em;color:#9CA1AA}
.topbar-tip{flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#E8E6E1}
.topbar-action{color:#FFB48C;border-left:1px solid rgba(232,230,225,.25);padding-left:16px;transition:color .18s}
.topbar-action:hover{color:#fff}
@media(max-width:767px){
  .topbar-domain{display:none}
  .topbar-tip{text-align:left;font-size:12px}
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:9px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;line-height:1;
  box-shadow:0 4px 14px rgba(14,159,142,.28);
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-main{font-size:17px;font-weight:800;letter-spacing:-.01em}
.brand-sub{font-size:10.5px;color:var(--muted);letter-spacing:.16em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:#383C44;
  padding:6px 0;transition:color .18s;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;
  width:14px;height:2px;background:var(--brand);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after,.nav-link.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-cta{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--surface);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
@media(max-width:1023px){
  .main-nav{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-sm);
  padding:14px 28px;
  font-size:15px;font-weight:600;
  cursor:pointer;border:1.5px solid transparent;
  transition:background-color .18s,color .18s,border-color .18s,transform .18s,box-shadow .18s;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,43,.28)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bg)}
.btn-ghost:active{transform:scale(.98)}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand);color:#fff}
.btn-sm{padding:10px 20px;font-size:14px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  transition:color .18s;
}
.link-more .arrow{transition:transform .18s}
.link-more:hover{text-decoration:underline;text-underline-offset:4px}
.link-more:hover .arrow{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:min(720px,78vh);
  display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(18,20,26,.88) 0%,rgba(18,20,26,.82) 42%,rgba(18,20,26,.38) 100%);
}
.hero::after{
  content:"";position:absolute;right:-40px;top:-40px;width:280px;height:280px;
  background-image:radial-gradient(rgba(255,255,255,.5) 1.4px,transparent 1.4px);
  background-size:26px 26px;
  opacity:.06;pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1fr;gap:44px;
  padding-block:64px;
}
@media(min-width:1024px){
  .hero-inner{grid-template-columns:6fr 6fr;gap:56px;align-items:center;padding-block:80px}
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;
  color:#7FE3D6;font-weight:600;margin-bottom:18px;
}
.hero-eyebrow::before{content:"";width:24px;height:1px;background:#7FE3D6;display:inline-block}
.hero-title{
  font-size:36px;line-height:1.1;font-weight:900;letter-spacing:-.02em;
  margin-bottom:18px;
}
@media(min-width:640px){.hero-title{font-size:48px}}
@media(min-width:1024px){.hero-title{font-size:60px}}
.hero-sub{
  font-size:16.5px;line-height:1.8;color:rgba(255,255,255,.82);
  max-width:520px;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;max-width:520px;
  border-top:1px solid rgba(255,255,255,.18);
  padding-top:26px;
}
.stat-num{
  font-family:var(--font-serif);
  font-size:30px;font-weight:700;line-height:1;
  font-variant-numeric:tabular-nums;
  color:#fff;
}
.stat-num small{font-size:14px;font-weight:500;margin-left:4px;color:#7FE3D6}
.stat-label{font-size:13px;color:rgba(255,255,255,.68);margin-top:8px}
.hero-card{
  background:rgba(255,255,255,.93);
  border:1px solid rgba(255,255,255,.5);
  border-radius:var(--radius-md);
  padding:28px;
  color:var(--ink);
  box-shadow:0 24px 60px rgba(0,0,0,.22);
}
.hero-card-title{
  font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--brand);margin-bottom:18px;
}
.hero-card-list{display:flex;flex-direction:column;gap:16px}
.hero-card-item{display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:flex-start}
.hero-card-idx{
  width:42px;height:42px;border-radius:var(--radius-sm);
  background:var(--brand-soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:16px;font-weight:700;
}
.hero-card-item h3{font-size:15px;font-weight:700;margin-bottom:4px}
.hero-card-item p{font-size:13.5px;line-height:1.7;color:var(--muted)}

/* ---------- 通用板块 ---------- */
.section{padding-block:56px}
@media(min-width:1024px){.section{padding-block:100px}}
.section-alt{background:var(--surface)}
.section-ink{background:var(--ink);color:#EDEBE6}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:18px;margin-bottom:38px;
}
.section-kicker{
  font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);font-weight:700;margin-bottom:12px;
}
.section-title{font-size:26px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
@media(min-width:768px){.section-title{font-size:32px}}
.section-desc{font-size:15px;color:var(--muted);max-width:560px;margin-top:10px}
.section-ink .section-desc{color:rgba(237,235,230,.65)}
.section-ink .section-title{color:#fff}

/* ---------- 优惠阶梯 ---------- */
.ladder{position:relative;padding-left:26px;display:flex;flex-direction:column;gap:26px}
.ladder::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:1px;background:var(--line)}
.ladder-item{
  position:relative;
  display:grid;grid-template-columns:96px 1fr;gap:18px;align-items:start;
}
@media(min-width:768px){
  .ladder-item:nth-child(2){margin-left:24px}
  .ladder-item:nth-child(3){margin-left:48px}
  .ladder-item:nth-child(4){margin-left:72px}
}
.ladder-num{
  font-family:var(--font-serif);
  font-size:38px;font-weight:700;line-height:1;color:var(--brand);
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.ladder-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:24px 26px;
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.ladder-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,159,142,.3)}
.tier-name{font-size:19px;font-weight:700;margin-bottom:6px}
.tier-threshold{font-size:13px;color:var(--muted);margin-bottom:16px}
.tier-threshold strong{color:var(--ink);font-variant-numeric:tabular-nums}
.tier-list{display:flex;flex-direction:column;gap:9px;margin-bottom:16px}
.tier-list li{position:relative;padding-left:20px;font-size:14.5px;color:#383C44}
.tier-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:2px;background:var(--brand-soft);
  border:1.5px solid var(--brand);
}
@media(max-width:767px){
  .ladder{padding-left:18px}
  .ladder-item{grid-template-columns:1fr;gap:8px}
  .ladder-num{font-size:30px}
  .ladder-body{padding:20px}
}

/* ---------- 套餐对比 ---------- */
.compare-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--surface);
}
table.compare{width:100%;min-width:760px;border-collapse:collapse;font-size:15px}
table.compare thead th{
  text-align:left;padding:22px 22px;font-size:13px;font-weight:700;
  letter-spacing:.06em;color:var(--muted);
  border-bottom:1px solid var(--line);
  background:#FBFAF7;
}
table.compare thead th:first-child{color:var(--ink);font-size:14px}
table.compare thead th.hl{background:#EAF7F4;color:var(--brand-deep);border-left:1px solid var(--brand);border-right:1px solid var(--brand)}
table.compare tbody td{
  padding:18px 22px;border-bottom:1px solid var(--line);vertical-align:middle;
  font-size:14.5px;color:#383C44;
}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
table.compare tbody tr:nth-child(even) td{background:#FAF9F6}
table.compare tbody td.hl{background:#EAF7F4;border-left:1px solid var(--brand);border-right:1px solid var(--brand)}
table.compare tbody tr:nth-child(even) td.hl{background:#EAF7F4}
.mark-yes{color:var(--brand);font-weight:700}
.mark-no{color:#B9B5AC}
.pill-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand);color:#fff;
  font-size:11.5px;font-weight:700;letter-spacing:.04em;
  padding:4px 12px;border-radius:999px;margin-left:8px;
  vertical-align:middle;
}
.table-hint{font-size:13px;color:var(--muted);margin-top:14px}

/* ---------- 限时入口 ---------- */
.countdown-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:18px;
  background:var(--ink);color:#fff;
  border-radius:var(--radius-lg);
  padding:22px 26px;margin-bottom:30px;
}
.countdown-label{font-size:14.5px;color:rgba(255,255,255,.72)}
.countdown-label strong{color:#fff;font-weight:700}
.cd-nums{display:flex;align-items:flex-end;gap:8px}
.cd-num{
  min-width:46px;height:50px;border-radius:8px;
  background:rgba(255,255,255,.09);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);
  font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;
  color:#FFB48C;
  transition:transform .2s ease;
}
.cd-num.tick{transform:translateY(6px)}
.cd-unit{font-size:12px;color:rgba(255,255,255,.5);padding-bottom:8px}
.entry-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.entry-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.entry-grid{grid-template-columns:repeat(4,1fr)}}
.entry-card{
  position:relative;
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:24px;
  transition:transform .22s,box-shadow .22s,border-color .22s;
  overflow:hidden;
}
.entry-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--brand);transform:scaleY(0);transform-origin:top;
  transition:transform .22s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,159,142,.3)}
.entry-card:hover::before{transform:scaleY(1)}
.entry-icon{
  width:40px;height:40px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.entry-icon svg{width:20px;height:20px}
.entry-name{font-size:16.5px;font-weight:700;margin-bottom:8px}
.entry-desc{font-size:14px;color:var(--muted);line-height:1.7;padding-right:26px}
.entry-arrow{
  position:absolute;right:22px;bottom:22px;color:var(--brand);
  transition:transform .22s;
}
.entry-card:hover .entry-arrow{transform:translateX(4px)}

/* ---------- 咨询表单 ---------- */
.consult-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:1024px){.consult-grid{grid-template-columns:5fr 7fr;gap:56px;align-items:start}}
.form-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:28px;
}
@media(min-width:640px){.form-card{padding:34px}}
.form-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.form-grid{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1/-1}
.field label{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.02em}
.input,.select,.textarea{
  width:100%;height:48px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#FCFBF8;padding:0 14px;
  font-size:15px;color:var(--ink);
  transition:border-color .18s,box-shadow .18s,background-color .18s;
}
.textarea{height:auto;padding:12px 14px;min-height:118px;resize:vertical;line-height:1.7}
.input::placeholder,.textarea::placeholder{color:#A8A49C}
.input:focus,.select:focus,.textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(14,159,142,.16);
}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7}
.checkbox-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand);flex-shrink:0}
.form-note{font-size:12.5px;color:var(--muted);margin-top:14px}
.form-submit{margin-top:22px}
@media(max-width:767px){.form-submit .btn{width:100%}}
.consult-side{border-left:1px solid var(--line);padding-left:0}
@media(min-width:1024px){.consult-side{padding-left:36px}}
@media(max-width:1023px){.consult-side{border-left:0;border-top:1px solid var(--line);padding-top:32px}}
.consult-side h3{font-size:20px;font-weight:700;margin-bottom:14px}
.consult-side p{font-size:15px;color:#383C44;margin-bottom:22px}
.consult-points{display:flex;flex-direction:column;gap:18px;margin-bottom:26px}
.consult-points li{display:grid;grid-template-columns:28px 1fr;gap:12px;align-items:flex-start}
.consult-points .dot{
  width:28px;height:28px;border-radius:999px;background:var(--brand-soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.consult-points h4{font-size:15px;font-weight:700;margin-bottom:3px}
.consult-points span{font-size:14px;color:var(--muted)}
.consult-meta{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:18px 20px;font-size:14px;color:var(--muted);
}
.consult-meta strong{color:var(--ink);font-variant-numeric:tabular-nums}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){
  .news-grid{grid-template-columns:repeat(3,1fr)}
  .news-grid > .news-card:first-child{grid-column:span 2}
}
.news-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,159,142,.3)}
.news-thumb{
  position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,var(--brand-soft),var(--bg));
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-thumb-fallback{
  width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  font-size:32px;font-weight:700;color:var(--brand);
}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge{
  display:inline-flex;align-items:center;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  padding:4px 12px;border-radius:999px;
  width:fit-content;
}
.news-title{
  font-size:17px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-grid > .news-card:first-child .news-title{font-size:20px}
.news-summary{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:10px;
  font-size:12.5px;color:var(--muted);letter-spacing:.02em;
}
.news-meta .sep{color:#CFCBC2}
.empty-state{
  grid-column:1/-1;
  border:1px dashed var(--line);
  border-radius:var(--radius-lg);
  padding:52px 24px;
  text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:18px;
}
.empty-state p{font-size:15px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:18px 0 18px 0;
  text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .18s,padding-left .22s;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--brand);transform:scaleY(0);transform-origin:top;
  transition:transform .22s ease;
}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-item.is-open .faq-q{color:var(--brand);padding-left:16px}
.faq-icon{
  position:relative;width:18px;height:18px;flex-shrink:0;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);transition:transform .24s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s ease;
}
.faq-a-inner{padding:0 0 22px 16px;font-size:15px;line-height:1.8;color:#383C44;max-width:860px}

/* ---------- 页脚前 CTA ---------- */
.cta-band{
  background:var(--ink);color:#fff;
  padding-block:40px;
}
.cta-band-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-band h2{font-size:22px;font-weight:700;line-height:1.4;letter-spacing:-.01em}
@media(min-width:768px){.cta-band h2{font-size:26px}}
.cta-band p{font-size:14px;color:rgba(255,255,255,.62);margin-top:8px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C9C7C1;padding-top:64px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:48px;
}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand-name{font-size:17px;font-weight:800;color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:#9CA1AA;max-width:320px}
.footer-title{
  font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:#fff;margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:#9CA1AA;transition:color .18s}
.footer-links a:hover{color:#7FE3D6}
.footer-domain{
  font-size:14px;color:#fff;font-variant-numeric:tabular-nums;
  letter-spacing:.04em;margin-bottom:12px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-block:22px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:#7C818A;
}

/* ---------- 移动端抽屉与底栏 ---------- */
.drawer{
  position:fixed;inset:0;z-index:100;
  background:var(--bg);
  transform:translateX(100%);
  transition:transform .28s cubic-bezier(.2,.8,.2,1);
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;padding-inline:20px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--surface);cursor:pointer;font-size:20px;line-height:1;color:var(--ink);
}
.drawer-nav{flex:1;overflow-y:auto;padding:12px 20px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:16px;font-weight:500;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--brand);font-weight:700}
.drawer-link .chev{color:var(--muted)}
.drawer-foot{padding:20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  height:56px;background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  display:none;align-items:center;gap:12px;padding-inline:16px;
  transform:translateY(100%);transition:transform .24s ease;
}
.mobile-bar.is-visible{transform:translateY(0)}
.mobile-bar .btn{flex:1;padding:12px 16px;font-size:14px}
.mobile-bar .mobile-bar-link{font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap}
@media(max-width:767px){
  .mobile-bar{display:flex}
  body{padding-bottom:56px}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s cubic-bezier(.2,.8,.2,1),transform .4s cubic-bezier(.2,.8,.2,1)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.001ms!important;animation-duration:.001ms!important}
}

/* roulang page: article */
:root{
    --ink:#12141A;
    --brand:#0E9F8E;
    --brand-deep:#0A6F64;
    --brand-soft:#E4F4F1;
    --accent:#FF6A2B;
    --accent-hover:#E85A1C;
    --bg:#F6F4EF;
    --surface:#FFFFFF;
    --line:#E4E0D7;
    --muted:#6B6F76;
    --radius-sm:8px;
    --radius:10px;
    --radius-lg:16px;
    --shadow-hover:0 12px 32px rgba(18,20,26,.08);
    --pad-x:20px;
    --container:1200px;
    --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
    --font-serif:Georgia,"Songti SC","SimSun",serif;
  }
  @media (min-width:768px){:root{--pad-x:32px}}
  @media (min-width:1024px){:root{--pad-x:40px}}

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;scroll-padding-top:112px}
  .site-body{
    margin:0;background:var(--bg);color:var(--ink);
    font-family:var(--font-sans);font-size:16px;line-height:1.78;
    -webkit-font-smoothing:antialiased;text-wrap:pretty;line-break:strict;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease}
  button{font:inherit;color:inherit}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad-x)}
  .dot{color:rgba(255,255,255,.4)}

  /* 顶部信息条 */
  .topbar{background:var(--ink);color:#E8E6E1;font-size:13px}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
  .topbar-domain{color:#B9BDC4;letter-spacing:.04em}
  .topbar-note{color:#E8E6E1}
  .topbar-link{display:inline-flex;align-items:center;gap:6px;padding-left:16px;border-left:1px solid rgba(255,255,255,.18);color:#fff}
  .topbar-link:hover{color:var(--accent)}

  /* 导航 */
  .site-header{position:sticky;top:0;z-index:60;background:rgba(246,244,239,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
  .brand{display:flex;align-items:center;gap:12px}
  .brand-mark{width:36px;height:36px;border-radius:10px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;flex:none}
  .brand-text{display:flex;flex-direction:column;line-height:1.2}
  .brand-main{font-size:17px;font-weight:800;letter-spacing:-.01em}
  .brand-sub{font-size:11px;letter-spacing:.14em;color:var(--muted)}
  .main-nav{display:flex;align-items:center;gap:28px}
  .nav-link{position:relative;font-size:15px;font-weight:500;color:#33373D;padding:6px 0}
  .nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--brand);transition:left .18s ease,right .18s ease}
  .nav-link:hover{color:var(--brand)}
  .nav-link:hover::after,.nav-link.is-active::after{left:0;right:0}
  .nav-link.is-active{color:var(--brand)}
  .nav-cta{display:flex;align-items:center;gap:12px}
  .nav-toggle{display:none;position:relative;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer}
  .nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--ink);transform:translateX(-50%);content:""}
  .nav-toggle span{top:50%;margin-top:-1px}
  .nav-toggle span::before{top:-6px}
  .nav-toggle span::after{top:6px}

  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius);border:1.5px solid transparent;padding:14px 28px;font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease}
  .btn:active{transform:scale(.98)}
  .btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
  .btn-primary{background:var(--accent);color:#fff}
  .btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
  .btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
  .btn-ghost:hover{background:var(--ink);color:var(--bg)}
  .btn-sm{padding:9px 18px;font-size:14px;border-radius:var(--radius-sm)}

  .pill{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em}
  .pill-brand{background:var(--brand-soft);color:var(--brand-deep)}

  /* 文章头部 */
  .article-hero{position:relative;padding:48px 0 44px;color:#fff;background-image:linear-gradient(100deg,rgba(18,20,26,.95) 0%,rgba(18,20,26,.82) 48%,rgba(18,20,26,.66) 100%),url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center}
  .breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0 0 22px;padding:0;font-size:13px}
  .breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;color:rgba(255,255,255,.7)}
  .breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.35)}
  .breadcrumb a{color:rgba(255,255,255,.85)}
  .breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
  .breadcrumb li[aria-current="page"]{max-width:62vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:rgba(255,255,255,.6)}
  .article-title{margin:16px 0 18px;max-width:900px;font-size:clamp(26px,4vw,40px);line-height:1.25;font-weight:800;letter-spacing:-.01em}
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.72)}
  .article-meta .num{font-variant-numeric:tabular-nums}

  /* 文章主体布局 */
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;padding-top:48px;padding-bottom:56px}
  @media (min-width:1280px){
    .article-layout{grid-template-columns:minmax(0,780px) 220px;justify-content:center;gap:48px;padding-top:72px;padding-bottom:72px}
  }
  .article-main{min-width:0}
  .article-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 22px;font-size:17px;line-height:1.9}
  @media (min-width:768px){.article-body{padding:44px 48px}}
  .article-body p{margin:0 0 1.15em}
  .article-body h2{position:relative;margin:48px 0 16px;padding-left:14px;font-size:24px;line-height:1.35;font-weight:700}
  .article-body h2:first-child{margin-top:0}
  .article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand)}
  .article-body h3{margin:32px 0 12px;font-size:20px;font-weight:700;line-height:1.45}
  .article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
  .article-body li{margin-bottom:.5em}
  .article-body li::marker{color:var(--brand)}
  .article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{color:var(--brand)}
  .article-body strong{font-weight:700}
  .article-body blockquote{margin:24px 0;padding:16px 20px;border-left:3px solid var(--brand);background:var(--bg);border-radius:0 var(--radius) var(--radius) 0;font-size:16px;color:#3A3F46}
  .article-body img{border-radius:12px;margin:24px auto}
  .article-body figure{margin:24px 0}
  .article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:8px}
  .article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;border:1px solid var(--line);overflow:hidden;border-radius:var(--radius-sm)}
  .article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
  .article-body th{background:var(--bg);font-weight:600}
  .article-body tbody tr:nth-child(even){background:#FBFAF7}
  .article-body code{background:var(--bg);padding:2px 6px;border-radius:6px;font-size:15px}

  .empty-state{border:1px dashed var(--line);border-radius:var(--radius-lg);background:var(--bg);padding:48px 24px;text-align:center}
  .empty-title{margin:0 0 8px;font-size:20px;font-weight:700}
  .empty-desc{margin:0 0 20px;color:var(--muted);font-size:15px}

  .article-foot{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px}
  .tag{display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand-deep);font-size:13px;font-weight:500}
  .tag:hover{background:var(--brand);color:#fff}
  .back-col{display:inline-flex;align-items:center;gap:6px;margin-left:auto;font-size:14px;font-weight:600;color:var(--brand-deep)}
  .back-col span{transition:transform .18s ease}
  .back-col:hover span{transform:translateX(-4px)}

  /* 目录 */
  .toc{position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px}
  .toc-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
  .toc-title{margin:0;font-size:12px;letter-spacing:.14em;font-weight:700;color:var(--muted)}
  .toc-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:4px 12px;font-size:12px;cursor:pointer}
  .toc-toggle:hover{border-color:var(--brand);color:var(--brand-deep)}
  .toc-list{list-style:none;margin:14px 0 0;padding:0;font-size:14px;max-height:62vh;overflow-y:auto}
  .toc-list li{margin:0}
  .toc-list a{display:block;padding:7px 10px;border-left:2px solid transparent;border-radius:0 6px 6px 0;color:#4A4F57;line-height:1.5}
  .toc-list a:hover{color:var(--brand-deep);background:var(--brand-soft)}
  .toc-list a.is-current{color:var(--brand-deep);border-left-color:var(--brand);background:var(--brand-soft);font-weight:600}
  .toc-list .toc-lv3 a{padding-left:22px;font-size:13px}
  @media (max-width:1279px){
    .article-side{order:-1}
    .toc{position:static}
    .toc-toggle{display:inline-flex}
    .toc-list{max-height:0;overflow:hidden;transition:max-height .28s ease}
    .toc.is-open .toc-list{max-height:480px;overflow-y:auto}
  }

  /* 板块与卡片 */
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:88px 0}}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
  .section-head h2{margin:0;font-size:clamp(22px,3vw,30px);font-weight:700;letter-spacing:-.01em;line-height:1.3}
  .section-desc{margin:8px 0 0;font-size:15px;color:var(--muted)}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-deep)}
  .link-more span{transition:transform .18s ease}
  .link-more:hover{text-decoration:underline;text-underline-offset:4px}
  .link-more:hover span{transform:translateX(4px)}

  .card-grid{display:grid;gap:20px;grid-template-columns:1fr}
  @media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}
  .card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,159,142,.35)}
  .card-media{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,var(--brand-soft),var(--bg))}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
  .card:hover .card-media img{transform:scale(1.04)}
  .card-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
  .card-title{margin:0;font-size:18px;font-weight:700;line-height:1.45}
  .card-desc{margin:0;font-size:14px;line-height:1.7;color:var(--muted)}
  .card-foot{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--brand-deep)}
  .card:hover .card-foot span{transform:translateX(4px)}
  .card-foot span{transition:transform .18s ease}

  /* 页脚前 CTA */
  .cta-band{background:var(--ink);color:#fff;padding:40px 0;border-top:1px solid rgba(255,255,255,.08)}
  .cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
  .cta-inner h2{margin:0;font-size:clamp(20px,2.6vw,26px);font-weight:700;line-height:1.4}
  .cta-inner p{margin:6px 0 0;font-size:14px;color:#A8ADB5}

  /* 移动端抽屉与底栏 */
  .mobile-drawer{position:fixed;inset:0;z-index:90;display:flex;flex-direction:column;gap:8px;padding:22px 20px 28px;background:var(--bg);overflow-y:auto;transform:translateY(-100%);transition:transform .3s ease}
  .mobile-drawer.is-open{transform:translateY(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
  .drawer-close{width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;font-size:20px;line-height:1;cursor:pointer}
  .drawer-nav{display:flex;flex-direction:column;margin-top:8px}
  .drawer-nav a{display:flex;align-items:center;justify-content:space-between;min-height:52px;font-size:16px;font-weight:500;border-bottom:1px solid var(--line)}
  .drawer-nav a:hover,.drawer-nav a.is-active{color:var(--brand-deep)}
  .drawer-cta{margin-top:20px;width:100%}
  .mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;align-items:center;gap:12px;padding:10px 16px;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--line);transform:translateY(120%);transition:transform .25s ease}
  .mobile-bar.is-visible{transform:translateY(0)}
  .mobile-bar .btn{flex:1}
  .mobile-bar-link{font-size:14px;font-weight:600;color:var(--brand-deep);padding:8px 6px}
  @media (max-width:767px){
    .main-nav,.nav-cta{display:none}
    .nav-toggle{display:block}
    .mobile-bar{display:flex}
    .site-body{padding-bottom:76px}
  }

  /* 页脚 */
  .site-footer{background:var(--ink);color:#C9CDD3;padding-top:56px;border-top:1px solid rgba(255,255,255,.08)}
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr;padding-bottom:40px}
  @media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-brand .brand-mark{background:var(--brand)}
  .footer-brand-name{font-size:17px;font-weight:700;color:#fff}
  .footer-desc{margin:0;font-size:14px;line-height:1.8;color:#9BA1A9;max-width:320px}
  .footer-title{margin:0 0 14px;font-size:13px;letter-spacing:.14em;font-weight:600;color:#7E858D}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{font-size:14px;color:#C9CDD3}
  .footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
  .footer-domain{margin:0 0 8px;font-size:14px;color:#fff;letter-spacing:.04em}
  .footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:12px;color:#8A9099}

  [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .4s cubic-bezier(.2,.8,.2,1),transform .4s cubic-bezier(.2,.8,.2,1)}
  [data-reveal].is-visible{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    html{scroll-behavior:auto}
    [data-reveal]{opacity:1;transform:none}
    .mobile-bar{transform:none}
  }

/* roulang page: category1 */
:root{
  --ink:#12141A;
  --brand:#0E9F8E;
  --brand-deep:#0A6F64;
  --brand-soft:#E4F4F1;
  --accent:#FF6A2B;
  --accent-hover:#E85A1C;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D7;
  --muted:#6B6F76;
  --text-2:#3A3E45;
  --radius-lg:16px;
  --radius:10px;
  --shadow-hover:0 12px 32px rgba(18,20,26,.08);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.78;line-break:strict;text-wrap:pretty;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
h1,h2,h3{line-height:1.3;letter-spacing:-.01em}
::selection{background:rgba(14,159,142,.18)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
@media(max-width:1023px){.container{padding:0 32px}}
@media(max-width:640px){.container{padding:0 20px}}

/* 顶部信息条 */
.topbar{background:var(--ink);color:#E8E6E1;font-size:12.5px;height:38px;display:flex;align-items:center}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:18px}
.topbar-left{color:#8E9199;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.topbar-mid{color:#B9BBC0}
.topbar-right{display:flex;align-items:center;gap:14px}
.topbar-right a{color:#fff;font-weight:600;position:relative}
.topbar-right a:hover{color:var(--brand)}
.topbar-divider{width:1px;height:14px;background:rgba(255,255,255,.18)}
@media(max-width:767px){
  .topbar-left,.topbar-divider,.topbar-right span{display:none}
  .topbar .container{justify-content:space-between}
  .topbar-mid{font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(246,244,239,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:24px;height:24px;border-radius:7px;background:var(--ink);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:16px;font-weight:800;letter-spacing:-.01em}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.06em;margin-top:2px}
.main-nav{display:flex;align-items:center;gap:28px;flex:1;justify-content:center}
.nav-link{position:relative;font-size:15px;font-weight:500;padding:6px 0;transition:color .18s}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .18s ease}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius);position:relative;background:var(--surface)}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--ink);transform:translateX(-50%);transition:.2s}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}
.site-header.nav-open .nav-toggle span{background:transparent}
.site-header.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
.site-header.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}
@media(max-width:900px){
  .nav-inner{height:64px}
  .main-nav{
    position:fixed;top:102px;left:0;right:0;bottom:0;background:var(--bg);
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:10px 20px 120px;opacity:0;transform:translateY(-8px);
    pointer-events:none;transition:opacity .22s ease,transform .22s ease;overflow-y:auto;z-index:70;
  }
  .main-nav.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-link{height:52px;display:flex;align-items:center;justify-content:space-between;font-size:16px;border-bottom:1px solid var(--line);padding:0}
  .nav-link::after{display:none}
  .nav-link::before{content:"›";color:var(--muted);order:2;font-size:20px;line-height:1}
  .nav-toggle{display:block;margin-left:auto}
  .nav-cta{position:fixed;left:20px;right:20px;bottom:20px;z-index:80;display:none;flex-direction:column;align-items:stretch;gap:10px}
  .site-header.nav-open .nav-cta{display:flex}
  .nav-cta .btn{width:100%}
}
@media(max-width:640px){.main-nav{top:96px}}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius);font-weight:600;font-size:15px;padding:14px 28px;border:1.5px solid transparent;cursor:pointer;transition:background .2s,color .2s,transform .2s,border-color .2s,box-shadow .2s}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:9px}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bg)}
.btn-line{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-line:hover{border-color:var(--brand);color:var(--brand)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.link{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;font-size:15px}
.link::after{content:"→";transition:transform .2s ease}
.link:hover{color:var(--brand-deep)}
.link:hover::after{transform:translateX(4px)}
.link:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

/* 面包屑 */
.crumb{padding-top:24px;font-size:13px;color:var(--muted)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li:not(:last-child)::after{content:"/";color:#C9C5BC}
.crumb a:hover{color:var(--brand)}
.crumb li[aria-current]{color:var(--ink);font-weight:600}

/* 页面头部 */
.page-hero{padding:22px 0 0}
.eyebrow{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);font-weight:700;margin-bottom:12px}
.page-hero h1{font-size:clamp(32px,4.4vw,48px);font-weight:800;line-height:1.14;letter-spacing:-.02em;max-width:900px}
.page-lead{font-size:17px;color:var(--muted);max-width:720px;margin-top:16px}
.hero-banner{position:relative;margin-top:30px;height:268px;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line)}
.hero-banner img{width:100%;height:100%;object-fit:cover}
.hero-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,20,26,.84) 0%,rgba(18,20,26,.42) 62%,rgba(18,20,26,.24) 100%)}
.banner-text{position:absolute;left:36px;right:36px;bottom:30px;z-index:2;color:#fff;max-width:600px}
.banner-text strong{display:block;font-size:24px;font-weight:700;letter-spacing:-.01em}
.banner-text span{display:block;font-size:14px;color:rgba(255,255,255,.78);margin-top:8px}
@media(max-width:767px){
  .hero-banner{height:212px}
  .banner-text{left:20px;right:20px;bottom:20px}
  .banner-text strong{font-size:19px}
  .banner-text span{font-size:13px}
  .page-lead{font-size:16px}
}

/* 板块 */
.section{padding:96px 0}
.section-tight{padding:64px 0 0}
@media(max-width:1023px){.section{padding:72px 0}}
@media(max-width:640px){.section{padding:56px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.h2{font-size:clamp(26px,3vw,34px);font-weight:700}
.h2-sub{font-size:15px;color:var(--muted);margin-top:12px;max-width:660px}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding-top:22px;border-top:1px solid var(--line);transition:border-color .25s}
.step:hover{border-color:var(--brand)}
.step-num{font-size:40px;font-weight:700;color:var(--brand);line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.step h3{font-size:19px;font-weight:600;margin:14px 0 8px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.75}
@media(max-width:1023px){.steps{grid-template-columns:repeat(2,1fr);gap:28px}}
@media(max-width:640px){.steps{grid-template-columns:1fr}}

/* 图文交替 */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0;border-bottom:1px solid var(--line)}
.feature:first-child{padding-top:0}
.feature:last-child{border-bottom:0;padding-bottom:0}
.feature.rev .feature-media{order:2}
.feature.rev .feature-body{order:1}
.feature-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-lg);border:1px solid var(--line)}
.feature-media figcaption{font-size:13px;color:var(--muted);margin-top:10px;text-align:center}
.feature-body h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;margin-bottom:16px}
.feature-body p{font-size:15.5px;color:var(--text-2);line-height:1.8;margin-bottom:14px}
.feature-body ul{margin:6px 0 18px}
.feature-body li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2);margin-bottom:10px}
.feature-body li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--brand)}
@media(max-width:900px){
  .feature{grid-template-columns:1fr;gap:24px;padding:36px 0}
  .feature.rev .feature-media,.feature.rev .feature-body{order:0}
}

/* 对比表 */
.compare-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);-webkit-overflow-scrolling:touch}
table.compare{width:100%;min-width:760px;border-collapse:collapse}
.compare th,.compare td{padding:18px 20px;font-size:15px;text-align:left;border-bottom:1px solid var(--line)}
.compare thead th{background:var(--bg);font-size:14px;font-weight:700;white-space:nowrap}
.compare tbody tr:nth-child(even){background:#FBFAF7}
.compare tbody tr:last-child td{border-bottom:0}
.compare td:first-child,.compare th:first-child{width:24%;font-weight:700;color:var(--ink)}
.compare td{color:var(--text-2)}
.compare .col-best{background:#F7FDFC;border-left:1px solid rgba(14,159,142,.4);border-right:1px solid rgba(14,159,142,.4)}
.compare thead .col-best{background:var(--brand-soft);color:var(--brand-deep)}
.compare .mark{color:var(--brand);font-weight:700;font-variant-numeric:tabular-nums}
.compare .dash{color:#C0BCB3}
.pill{display:inline-flex;align-items:center;border-radius:999px;padding:4px 12px;font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand-deep);letter-spacing:.02em}
.pill-accent{background:#FFEDE4;color:#B8420E}
.table-note{font-size:13px;color:var(--muted);margin-top:14px}

/* FAQ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0 20px 16px;position:relative;font-size:16px;font-weight:600;text-align:left;transition:color .2s}
.faq-q::before{content:"";position:absolute;left:0;top:50%;width:2px;height:24px;background:var(--brand);transform:translateY(-50%) scaleY(0);transition:transform .22s ease}
.faq-q:hover{color:var(--brand)}
.faq-item.is-open .faq-q{color:var(--brand)}
.faq-item.is-open .faq-q::before{transform:translateY(-50%) scaleY(1)}
.faq-sign{flex:0 0 auto;font-size:20px;font-weight:400;color:var(--muted);line-height:1;transition:transform .24s ease,color .2s}
.faq-item.is-open .faq-sign{transform:rotate(45deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a-inner{padding:0 16px 22px;font-size:15px;color:var(--text-2);line-height:1.82}
.faq-a-inner p+p{margin-top:10px}
@media(min-width:1024px){
  .faq-columns{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
}

/* 表单 */
.consult{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px}
.form-card h3{font-size:20px;font-weight:700;margin-bottom:6px}
.form-card .form-hint{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;font-family:inherit;font-size:15px;color:var(--ink);transition:border-color .2s,box-shadow .2s}
.field textarea{height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#A9A6A0}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,159,142,.16)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:4px 0 20px}
.check input{width:16px;height:16px;margin-top:3px;flex:0 0 auto;accent-color:var(--brand)}
.form-tip{font-size:13px;color:var(--brand);margin-top:12px;min-height:20px}
.info-block{display:flex;flex-direction:column;gap:20px}
.info-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 28px;transition:transform .25s,box-shadow .25s,border-color .25s}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,159,142,.3)}
.info-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.info-card p{font-size:14.5px;color:var(--muted);line-height:1.78}
.info-num{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.08em;margin-bottom:10px;font-variant-numeric:tabular-nums}
@media(max-width:900px){.consult{grid-template-columns:1fr;gap:28px}}

/* CTA 条 */
.cta-band{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(21px,2.4vw,26px);font-weight:700}
.cta-band p{font-size:14px;color:#A9ACB3;margin-top:8px}
.back-row{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;font-size:14px;color:var(--muted);padding:36px 0 0}
.back-row .link{font-size:14px}

/* 九点阵装饰 */
.dot-grid{
  background-image:radial-gradient(rgba(18,20,26,.04) 1.6px,transparent 1.6px);
  background-size:22px 22px;
}

/* 页脚 */
.site-footer{background:var(--ink);color:#C9CBD1;padding:64px 0 0;font-size:14px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:var(--brand)}
.footer-brand-name{color:#fff;font-size:16px;font-weight:700}
.footer-title{font-size:13px;color:#fff;font-weight:700;letter-spacing:.06em;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#B9BBC0;font-size:14px;transition:color .18s}
.footer-links a:hover{color:var(--brand)}
.footer-desc{color:#8E9199;font-size:14px;line-height:1.75}
.footer-domain{color:#E8E6E1;font-size:14px;margin-bottom:8px;font-variant-numeric:tabular-nums}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0;font-size:12px;color:#7A7D85}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:640px){
  .site-footer{padding-top:48px;margin-top:56px}
  .footer-grid{grid-template-columns:1fr}
}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s cubic-bezier(.2,.8,.2,1),transform .4s cubic-bezier(.2,.8,.2,1)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#12141A;
  --brand:#0E9F8E;
  --brand-deep:#0A6F64;
  --brand-soft:#E4F4F1;
  --accent:#FF6A2B;
  --accent-hover:#E85A1C;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D7;
  --muted:#6B6F76;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-hover:0 12px 32px rgba(18,20,26,.08);
  --serif:Georgia,"Songti SC","Noto Serif SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.78;
  line-break:strict;
  text-wrap:pretty;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- 容器 ---------- */
.container{
  width:100%;
  max-width:1200px !important;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){
  .container{padding-left:32px !important;padding-right:32px !important}
}
@media (min-width:1024px){
  .container{padding-left:40px !important;padding-right:40px !important}
}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:#E8E6E1;font-size:13px}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px}
.topbar-domain{letter-spacing:.04em;color:rgba(232,230,225,.62)}
.topbar-note{color:rgba(232,230,225,.82)}
.topbar-action{display:flex;align-items:center;gap:14px}
.topbar-action a{color:#fff;font-weight:600}
.topbar-action a:hover{color:#FFB894}
.topbar-divider{width:1px;height:14px;background:rgba(232,230,225,.28)}
@media (max-width:767px){
  .topbar-domain{display:none}
  .topbar-note{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,244,239,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:30px;height:30px;border-radius:9px;
  display:grid;place-items:center;
  background:var(--ink);color:#fff;
  font-size:15px;font-weight:800;line-height:1;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:16px;font-weight:800;letter-spacing:-.01em}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;font-size:15px;font-weight:500;padding:6px 0;transition:color .18s ease}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand-deep)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-deep);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:var(--radius-sm);background:var(--surface);position:relative;cursor:pointer;
  margin-left:auto;
}
.nav-toggle span{position:absolute;left:12px;right:12px;top:50%;height:2px;background:var(--ink);transform:translateY(-50%);transition:background .2s ease}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--ink);transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
@media (max-width:900px){
  .main-nav,.nav-cta{display:none}
  .nav-toggle{display:block}
}

/* ---------- 移动端抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:100;background:var(--bg);
  display:none;flex-direction:column;padding:0;
}
.nav-drawer.is-open{display:flex}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:72px;padding:0 20px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--surface);cursor:pointer;font-size:18px;line-height:1;color:var(--ink);
}
.drawer-list{display:flex;flex-direction:column;padding:8px 20px 0;overflow-y:auto;flex:1}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;font-size:16px;border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer-list a::after{content:"›";color:var(--muted);font-size:18px}
.drawer-list a.is-active{color:var(--brand-deep);font-weight:600}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);background:var(--bg)}
.drawer-foot .btn{width:100%}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bg)}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-deep)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- 文字链 ---------- */
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-deep);
  transition:color .18s ease;
}
.text-link::after{content:"→";transition:transform .18s ease}
.text-link:hover{color:var(--accent-hover);text-decoration:underline;text-underline-offset:4px}
.text-link:hover::after{transform:translateX(4px)}

/* ---------- 通用区块 ---------- */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-tight{padding:40px 0}
@media (min-width:1024px){.section-tight{padding:56px 0}}
.section-alt{background:#F1EEE7}
.section-head{max-width:680px;margin-bottom:36px}
.section-head h2{font-size:26px;line-height:1.3;font-weight:700;letter-spacing:-.01em;margin-bottom:12px}
@media (min-width:1024px){.section-head h2{font-size:32px}}
.section-head p{color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-block;font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-deep);background:var(--brand-soft);border-radius:999px;
  padding:5px 12px;margin-bottom:14px;font-weight:700;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-top:24px;font-size:13px;color:var(--muted)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#C9C4B8}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb [aria-current="page"]{color:var(--ink)}

/* ---------- 页头区 ---------- */
.page-head{padding:22px 0 0}
.page-head h1{
  font-size:32px;line-height:1.16;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 14px;max-width:820px;
}
@media (min-width:768px){.page-head h1{font-size:44px}}
@media (min-width:1024px){.page-head h1{font-size:52px}}
.page-lead{font-size:17px;color:var(--muted);max-width:660px}
.head-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;font-size:13px;color:var(--muted);
}
.chip strong{color:var(--ink);font-weight:700}
.banner{position:relative;margin-top:30px;border-radius:var(--radius-lg);overflow:hidden;height:220px}
@media (min-width:768px){.banner{height:260px}}
.banner img{width:100%;height:100%;object-fit:cover}
.banner-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,20,26,.82) 0%,rgba(18,20,26,.35) 100%)}
.banner-text{position:absolute;left:24px;right:24px;bottom:26px;color:#fff}
@media (min-width:768px){.banner-text{left:38px;right:38px}}
.banner-text strong{display:block;font-size:20px;font-weight:700;margin-bottom:6px}
@media (min-width:768px){.banner-text strong{font-size:24px}}
.banner-text span{font-size:14px;color:rgba(255,255,255,.8)}

/* ---------- 快速定位卡 ---------- */
.topic-grid{display:grid;gap:20px}
@media (min-width:640px){.topic-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.topic-grid{grid-template-columns:repeat(4,1fr)}}
.topic-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;display:flex;flex-direction:column;gap:12px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,159,142,.35)}
.topic-num{font-family:var(--serif);font-size:34px;line-height:1;color:var(--brand)}
.topic-card h3{font-size:18px;font-weight:700}
.topic-card p{font-size:14.5px;line-height:1.7;color:var(--muted);flex:1}

/* ---------- 自助排查步骤 ---------- */
.step-list{border-top:1px solid var(--line)}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:16px;
  padding:24px 0;border-bottom:1px solid var(--line);
}
@media (min-width:768px){.step{grid-template-columns:88px 1fr;gap:24px;padding:30px 0}}
.step-idx{font-family:var(--serif);font-size:30px;line-height:1.1;color:var(--brand)}
@media (min-width:768px){.step-idx{font-size:40px}}
.step h3{font-size:18px;font-weight:700;margin-bottom:8px}
.step p{font-size:15px;color:var(--muted);max-width:760px}

/* ---------- 图文区块 ---------- */
.split{display:grid;gap:28px;align-items:center}
@media (min-width:1024px){.split{grid-template-columns:1.02fr .98fr;gap:56px}}
.split-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);background:var(--surface)}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.split-body h2{font-size:24px;line-height:1.32;font-weight:700;margin-bottom:16px}
@media (min-width:1024px){.split-body h2{font-size:30px}}
.split-body p{color:var(--muted);margin-bottom:16px}
.split-list{display:flex;flex-direction:column;gap:12px;margin:22px 0 24px}
.split-list li{display:flex;gap:10px;font-size:15px;color:var(--ink)}
.split-list li::before{content:"✓";color:var(--brand);font-weight:700}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;gap:0}
@media (min-width:1024px){
  .faq-grid{grid-template-columns:1fr 1fr;column-gap:56px;align-items:start}
}
.faq-col{display:flex;flex-direction:column}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16px;font-weight:700;color:var(--ink);line-height:1.5;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-deep)}
.faq-item::before{
  content:"";position:absolute;left:-14px;top:18px;bottom:18px;width:2px;
  background:var(--brand);opacity:0;transition:opacity .24s ease;
}
.faq-item.is-open::before{opacity:1}
.faq-sign{position:relative;flex:0 0 16px;width:16px;height:16px;margin-top:5px;transition:transform .24s ease}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-sign::before{left:0;right:0;top:7px;height:2px}
.faq-sign::after{top:0;bottom:0;left:7px;width:2px;transition:transform .24s ease}
.faq-item.is-open .faq-sign{transform:rotate(180deg)}
.faq-item.is-open .faq-sign::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a-inner{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--muted);max-width:560px}

/* ---------- 帮助卡片 + 表单 ---------- */
.help-grid{display:grid;gap:24px}
@media (min-width:1024px){.help-grid{grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}}
.help-card{
  border:1px dashed #CFC9BC;border-radius:var(--radius-lg);
  padding:30px 26px;background:rgba(255,255,255,.6);
}
.help-card h2{font-size:22px;font-weight:700;margin-bottom:12px;line-height:1.35}
.help-card p{color:var(--muted);font-size:15px;margin-bottom:20px}
.help-stats{display:grid;gap:14px;margin-top:26px}
.help-stat{display:flex;align-items:baseline;gap:10px;font-size:14px;color:var(--muted)}
.help-stat strong{font-size:20px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px 24px;
}
@media (min-width:768px){.form-card{padding:34px 32px}}
.form-card h2{font-size:22px;font-weight:700;margin-bottom:8px}
.form-card .form-intro{font-size:14px;color:var(--muted);margin-bottom:24px}
.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.form-field label{font-size:13px;color:var(--muted);letter-spacing:.02em}
.form-field input,.form-field textarea,.form-field select{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--bg);padding:0 14px;font-size:15px;color:var(--ink);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.form-field textarea{height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{
  outline:none;border-color:var(--brand);background:var(--surface);
  box-shadow:0 0 0 3px rgba(14,159,142,.16);
}
.form-field input::placeholder,.form-field textarea::placeholder{color:#A8A49A}
.form-note{font-size:13px;color:var(--muted);margin-top:14px}
.form-row{display:grid;gap:0}
@media (min-width:768px){
  .form-row{grid-template-columns:1fr 1fr;gap:0 20px}
}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);color:#fff;border-radius:var(--radius-lg);
  padding:36px 28px;display:flex;flex-wrap:wrap;gap:24px;
  align-items:center;justify-content:space-between;
}
@media (min-width:768px){.cta-band{padding:44px 40px}}
.cta-band h2{font-size:22px;font-weight:700;line-height:1.35;margin-bottom:8px}
@media (min-width:768px){.cta-band h2{font-size:26px}}
.cta-band p{font-size:14px;color:rgba(255,255,255,.68)}

/* ---------- 返回入口行 ---------- */
.return-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding:22px 0 4px;font-size:14px;color:var(--muted);
}
.return-row a{color:var(--brand-deep);font-weight:600}
.return-row a:hover{color:var(--accent-hover);text-decoration:underline;text-underline-offset:4px}
.return-sep{color:#C9C4B8}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#E8E6E1;margin-top:56px;padding-top:56px}
@media (min-width:1024px){.site-footer{margin-top:88px;padding-top:72px}}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:var(--brand);color:#fff}
.footer-brand-name{font-size:16px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(232,230,225,.68);max-width:320px}
.footer-title{
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(232,230,225,.5);margin-bottom:16px;font-weight:700;
}
.footer-links{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-links a{color:rgba(232,230,225,.85);transition:color .18s ease}
.footer-links a:hover{color:#fff}
.footer-domain{font-size:14px;color:#fff;letter-spacing:.02em;margin-bottom:8px}
.footer-bottom{
  border-top:1px solid rgba(232,230,225,.14);margin-top:44px;padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:rgba(232,230,225,.55);
}

/* ---------- 移动端底部行动条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;height:56px;
  display:none;align-items:center;gap:12px;padding:0 16px;
  background:rgba(246,244,239,.96);border-top:1px solid var(--line);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  transform:translateY(100%);opacity:0;pointer-events:none;
  transition:transform .28s ease,opacity .28s ease;
}
.mobile-bar.is-visible{transform:translateY(0);opacity:1;pointer-events:auto}
.mobile-bar .btn{flex:1}
.mobile-bar .bar-link{font-size:14px;font-weight:600;color:var(--brand-deep);white-space:nowrap}
@media (max-width:767px){
  .mobile-bar{display:flex}
  body{padding-bottom:76px}
}

/* ---------- 进入视口动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s cubic-bezier(.2,.8,.2,1),transform .4s cubic-bezier(.2,.8,.2,1)}
.reveal.is-inview{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#12141A;
  --brand:#0E9F8E;
  --brand-deep:#0A6F64;
  --brand-soft:#E4F4F1;
  --accent:#FF6A2B;
  --accent-hover:#E85A1C;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D7;
  --muted:#6B6F76;
  --text-soft:#3A3E45;
  --r-lg:16px;
  --r-md:10px;
  --r-pill:999px;
  --shadow-hover:0 12px 32px rgba(18,20,26,.08);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.78;
  line-break:strict;
  text-wrap:pretty;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;}
p{margin:0;}
h1,h2,h3{margin:0;letter-spacing:-.02em;text-wrap:pretty;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:640px){.container{padding:0 32px;}}
@media (min-width:1024px){.container{padding:0 40px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:#E8E6E1;font-size:13px;height:38px;display:flex;align-items:center;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;}
.topbar-domain{letter-spacing:.06em;opacity:.7;font-variant-numeric:tabular-nums;}
.topbar-note{opacity:.92;}
.topbar-action{color:#E8E6E1;border-bottom:1px solid rgba(232,230,225,.45);padding-bottom:1px;transition:color .2s,border-color .2s;}
.topbar-action:hover{color:#7FE3D6;border-color:#7FE3D6;}
@media (max-width:767px){
  .topbar-domain{display:none;}
  .topbar-inner{justify-content:space-between;}
}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,244,239,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;flex:none;}
.brand-mark{
  width:24px;height:24px;border-radius:6px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;line-height:1;flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-main{font-size:17px;font-weight:800;letter-spacing:-.01em;}
.brand-sub{font-size:11px;letter-spacing:.12em;color:var(--muted);}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{position:relative;font-size:15px;font-weight:500;padding:6px 0;color:var(--ink);transition:color .2s;}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:100%;height:2px;background:var(--brand);
  transform:translateX(-50%) scaleX(0);transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after,.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:700;}
.nav-cta{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;align-items:center;gap:0;
  width:44px;height:44px;background:none;border:0;cursor:pointer;border-radius:var(--r-md);
}
.nav-toggle span{position:relative;display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:22px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-7px;}
.nav-toggle span::after{top:7px;}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
@media (max-width:1023px){
  .main-nav,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
}

/* ---------- 移动端抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:80;background:var(--bg);
  display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .3s var(--ease);
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--line);
}
.drawer-head .brand-main{font-size:17px;font-weight:800;}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);background:var(--surface);
  border-radius:var(--r-md);font-size:20px;line-height:1;cursor:pointer;color:var(--ink);
}
.drawer-nav{flex:1;overflow-y:auto;padding:8px 20px;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;
}
.drawer-link span{color:var(--muted);font-size:18px;}
.drawer-link.is-active{color:var(--brand-deep);font-weight:700;}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;padding:14px 28px;
  border-radius:var(--r-md);border:1.5px solid transparent;cursor:pointer;
  transition:background-color .2s,color .2s,border-color .2s,transform .18s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--bg);}
.btn-ghost:active{transform:scale(.98);}
.btn-outline{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-deep);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 通用元素 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-soft);color:var(--brand-deep);
  border-radius:var(--r-pill);padding:4px 12px;font-size:13px;font-weight:600;line-height:1.6;
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-deep);font-weight:600;font-size:14px;transition:color .2s;
}
.link-more::after{content:"→";transition:transform .2s var(--ease);}
.link-more:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.link-more:hover::after{transform:translateX(4px);}
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.eyebrow{
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);font-weight:700;margin-bottom:10px;
}
.section-title{font-size:28px;line-height:1.3;font-weight:700;}
@media (min-width:1024px){.section-title{font-size:34px;}}
.section-sub{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px;}
.hr-line{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 分类页头 ---------- */
.page-head{padding:28px 0 0;}
@media (min-width:1024px){.page-head{padding:40px 0 0;}}
.breadcrumb{font-size:13px;color:var(--muted);}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--line);}
.breadcrumb a{color:var(--muted);transition:color .2s;}
.breadcrumb a:hover{color:var(--brand-deep);}
.breadcrumb [aria-current="page"]{color:var(--ink);}
.page-title{font-size:36px;line-height:1.14;font-weight:900;letter-spacing:-.02em;margin-top:18px;}
@media (min-width:768px){.page-title{font-size:48px;}}
@media (min-width:1024px){.page-title{font-size:56px;}}
.page-lead{margin-top:14px;font-size:16px;color:var(--muted);max-width:640px;}
.page-banner{
  position:relative;margin-top:28px;border-radius:var(--r-lg);overflow:hidden;
  min-height:220px;border:1px solid var(--line);
}
@media (min-width:768px){.page-banner{min-height:260px;}}
.page-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.page-banner-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(18,20,26,.86) 0%,rgba(18,20,26,.62) 45%,rgba(18,20,26,.24) 100%);
}
.page-banner-text{position:relative;z-index:2;padding:32px 24px;max-width:620px;color:#fff;}
@media (min-width:768px){.page-banner-text{padding:44px 40px;}}
.page-banner-text p{margin-top:14px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.86);}
.page-banner-text .pill{background:rgba(255,255,255,.14);color:#EAFBF8;}

/* ---------- 数据条 ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
}
@media (min-width:768px){.stat-bar{grid-template-columns:repeat(4,1fr);}}
.stat{background:var(--surface);padding:24px 20px;}
.stat-num{display:block;font-size:32px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums;color:var(--ink);}
@media (min-width:1024px){.stat-num{font-size:38px;}}
.stat-label{display:block;margin-top:8px;font-size:13px;color:var(--muted);letter-spacing:.02em;}

/* ---------- 倒计时 ---------- */
.countdown{display:flex;align-items:center;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 16px;}
.cd-label{font-size:12px;color:var(--muted);margin-right:4px;letter-spacing:.02em;white-space:nowrap;}
.cd-digit{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:26px;height:34px;background:var(--ink);color:#fff;border-radius:6px;
  font-size:19px;font-weight:700;font-variant-numeric:tabular-nums;
}
.cd-sep{color:var(--muted);font-weight:700;}
@keyframes digitShift{from{transform:translateY(6px);opacity:.35;}to{transform:translateY(0);opacity:1;}}
.cd-digit.is-shift{animation:digitShift .26s var(--ease);}

/* ---------- 权益阶梯 ---------- */
.tier-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.tier-grid{grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}}
.tier-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px 24px 26px;display:flex;flex-direction:column;height:100%;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.tier-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,159,142,.3);}
.tier-card.is-featured{border-color:var(--brand);box-shadow:0 18px 44px rgba(14,159,142,.14);}
.tier-flag{
  position:absolute;top:-12px;left:24px;
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;
  border-radius:var(--r-pill);padding:4px 12px;letter-spacing:.02em;
}
@media (min-width:1024px){
  .tier-card.is-featured{transform:scale(1.02);}
  .tier-card.is-featured:hover{transform:scale(1.02) translateY(-2px);}
}
.tier-num{font-size:38px;font-weight:900;line-height:1;color:var(--brand);letter-spacing:-.03em;font-variant-numeric:tabular-nums;}
.tier-name{font-size:20px;font-weight:700;margin-top:14px;}
.tier-gate{font-size:13px;color:var(--muted);margin-top:6px;padding-bottom:18px;border-bottom:1px dashed var(--line);}
.tier-list{list-style:none;display:flex;flex-direction:column;gap:12px;margin:20px 0 24px;flex:1;}
.tier-list li{position:relative;padding-left:22px;font-size:14.5px;line-height:1.68;color:var(--text-soft);}
.tier-list li::before{
  content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:50%;
  background:var(--brand-soft);border:2px solid var(--brand);
}
.tier-foot{margin-top:auto;}

/* ---------- 权益规格表 ---------- */
.spec-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;}
.spec-row{display:grid;grid-template-columns:30% 1fr;min-height:52px;border-bottom:1px solid var(--line);}
.spec-row:last-child{border-bottom:0;}
.spec-key{
  background:var(--bg);padding:14px 20px;font-size:14.5px;font-weight:600;
  display:flex;align-items:center;
}
.spec-val{padding:14px 24px;font-size:14.5px;line-height:1.74;color:var(--text-soft);display:flex;align-items:center;}
@media (max-width:767px){
  .spec-row{grid-template-columns:1fr;}
  .spec-key{border-bottom:1px solid var(--line);}
}

/* ---------- 领取流程 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:768px){.steps{grid-template-columns:repeat(4,1fr);gap:24px;}}
.step{border-top:2px solid var(--line);padding-top:22px;}
.step-num{font-size:36px;font-weight:900;line-height:1;color:var(--brand);letter-spacing:-.03em;font-variant-numeric:tabular-nums;}
.step-name{font-size:18px;font-weight:700;margin-top:12px;}
.step-text{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.72;}

/* ---------- 图文交替 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:26px;align-items:center;}
@media (min-width:900px){.split{grid-template-columns:1fr 1fr;gap:56px;}}
.split + .split{margin-top:48px;}
@media (min-width:900px){.split + .split{margin-top:80px;}}
@media (min-width:900px){.split.reverse .split-text{order:2;} .split.reverse .split-media{order:1;}}
.split-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--surface);}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .3s var(--ease);}
.split-media:hover img{transform:scale(1.04);}
.split-title{font-size:24px;line-height:1.34;font-weight:700;}
@media (min-width:1024px){.split-title{font-size:28px;}}
.split-text p{margin-top:14px;font-size:15.5px;line-height:1.82;color:var(--text-soft);}
.split-text .link-more{margin-top:18px;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease);}
.faq-item.is-open{box-shadow:inset 2px 0 0 var(--brand);}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 4px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:700;color:var(--ink);transition:color .2s;
}
.faq-q:hover{color:var(--brand-deep);}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.faq-sign{position:relative;width:16px;height:16px;flex:none;}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);
  transform:translate(-50%,-50%);transition:transform .24s var(--ease),opacity .24s var(--ease);border-radius:2px;
}
.faq-sign::before{width:14px;height:2px;}
.faq-sign::after{width:2px;height:14px;}
.faq-item.is-open .faq-sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
.faq-a-inner{padding:0 4px 22px;max-width:860px;}
.faq-a-inner p{font-size:15px;line-height:1.82;color:var(--text-soft);}
.faq-a-inner p + p{margin-top:10px;}

/* ---------- 窄条 CTA ---------- */
.narrow-cta{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:var(--brand-soft);border:1px solid rgba(14,159,142,.24);
  border-radius:var(--r-lg);padding:22px 28px;
}
.narrow-cta p{font-size:15.5px;font-weight:600;color:var(--brand-deep);}

/* ---------- 表单 ---------- */
.consult-grid{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){.consult-grid{grid-template-columns:5fr 7fr;gap:48px;align-items:start;}}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 24px;}
@media (min-width:768px){.form-card{padding:32px;}}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--muted);letter-spacing:.02em;margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;padding:0 14px;font-size:15px;outline:none;
  transition:border-color .2s,box-shadow .2s;
}
.field textarea{height:auto;min-height:100px;padding:12px 14px;line-height:1.72;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 2px rgba(14,159,142,.18);
}
.field input::placeholder,.field textarea::placeholder{color:#A9A6A0;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);margin:4px 0 22px;line-height:1.7;}
.check-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex:none;}
.form-note{margin-top:14px;font-size:12.5px;color:var(--muted);}
.info-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 24px;}
@media (min-width:768px){.info-block{padding:32px;}}
.info-list{list-style:none;display:flex;flex-direction:column;gap:18px;margin-top:20px;}
.info-list li{padding-left:20px;position:relative;font-size:14.5px;line-height:1.76;color:var(--text-soft);}
.info-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--brand);
}
.info-head{font-size:20px;font-weight:700;}

/* ---------- 页脚前 CTA 条 ---------- */
.final-cta{background:var(--ink);color:#fff;padding:44px 0;}
.final-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.final-cta h2{color:#fff;font-size:22px;line-height:1.35;font-weight:700;}
@media (min-width:1024px){.final-cta h2{font-size:26px;}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C9C6C0;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:48px;}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:24px;height:24px;}
.footer-brand-name{font-size:16px;font-weight:800;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:#A9A6A0;max-width:360px;}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.1em;color:#8D8A85;text-transform:uppercase;margin-bottom:16px;}
.footer-links a{display:block;padding:6px 0;font-size:14px;color:#C9C6C0;transition:color .2s;}
.footer-links a:hover{color:#7FE3D6;}
.footer-domain{font-size:14px;color:#E8E6E1;letter-spacing:.04em;margin-bottom:8px;font-variant-numeric:tabular-nums;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:#8D8A85;
}

/* ---------- 移动端底部行动条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;height:56px;
  display:flex;align-items:center;gap:12px;padding:0 16px;
  background:rgba(255,255,255,.96);border-top:1px solid var(--line);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transform:translateY(110%);transition:transform .3s var(--ease);
}
.mobile-bar.is-visible{transform:translateY(0);}
.mobile-bar .mobile-bar-main{flex:1;}
.mobile-bar-link{font-size:14px;font-weight:600;color:var(--brand-deep);padding:8px 4px;white-space:nowrap;}
@media (min-width:768px){.mobile-bar{display:none;}}
@media (max-width:767px){
  body{padding-bottom:56px;}
}

/* ---------- 进入动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
.tier-grid .reveal:nth-child(2){transition-delay:.06s;}
.tier-grid .reveal:nth-child(3){transition-delay:.12s;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *,*::before,*::after{animation-duration:.001s !important;transition-duration:.001s !important;}
}