/* roulang page: index */
:root{
  --brand:#FF5A24;
  --brand-dark:#C63A0D;
  --brand-soft:#FFE6DC;
  --jade:#0FB5A0;
  --jade-soft:#E3F7F3;
  --ink:#0E1113;
  --ink-2:#1B2024;
  --text:#3A4045;
  --muted:#6E7378;
  --line:#E3E0D8;
  --paper:#F5F3EF;
  --white:#FFFFFF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,17,19,.04), 0 10px 26px -16px rgba(14,17,19,.18);
  --sh-2:0 2px 4px rgba(14,17,19,.06), 0 22px 44px -20px rgba(14,17,19,.26);
  --ease:cubic-bezier(.22,1,.36,1);
  --sec-pad:clamp(64px,8vw,120px);
  --mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--jade);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-pad) 0}
.section--tight{padding:clamp(48px,6vw,80px) 0}

/* ---------- 通用文字 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.06em;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-pill);
  padding:6px 14px;font-weight:600;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(26px,3.6vw,40px);line-height:1.2;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.sec-head p{margin-top:12px;font-size:15px;color:var(--muted);max-width:620px}
.link-more{font-size:14.5px;font-weight:600;color:var(--ink);border-bottom:2px solid var(--brand);padding-bottom:3px;white-space:nowrap}
.link-more:hover{color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn--primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0) scale(.98);box-shadow:var(--sh-1)}
.btn--ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn--ghost:hover{border-color:var(--ink);background:#FCFBF8;transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn--ghost:active{transform:translateY(0) scale(.98)}
.btn--text{height:auto;padding:0 0 4px;border-radius:0;color:var(--ink);border-bottom:2px solid var(--brand);background:none}
.btn--text:hover{color:var(--brand)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none!important}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:16px;z-index:60;padding:0 24px}
.nav-shell{
  max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:20px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border:1px solid var(--line);border-radius:var(--r-pill);
  box-shadow:var(--sh-1);padding:10px 12px 10px 20px;
  transition:box-shadow .3s var(--ease),padding .3s var(--ease);
}
.site-header.is-scrolled .nav-shell{box-shadow:var(--sh-2);padding:8px 10px 8px 18px}
.logo{display:flex;align-items:center;gap:8px;flex-shrink:0}
.logo__mark{
  width:34px;height:34px;border-radius:11px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:-.02em;
}
.logo__text{display:flex;align-items:baseline;gap:5px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.logo__text b{font-size:17px}
.logo__text span{font-size:13px;font-weight:600;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--text);
  padding:9px 14px;border-radius:var(--r-pill);white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--ink);background:#F7F5F1}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink);font-weight:700}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-cta{margin-left:10px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  background:var(--ink);color:#fff;place-items:center;font-size:16px;margin-left:auto;
}

/* 移动菜单 */
.mobile-menu{
  position:fixed;inset:0;z-index:80;background:rgba(14,17,19,.94);
  display:flex;flex-direction:column;padding:28px 24px 32px;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
}
.mobile-menu.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-menu__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.mobile-menu__top .logo__text b,.mobile-menu__top .logo__text span{color:#fff}
.mobile-menu__close{width:44px;height:44px;border-radius:var(--r-pill);background:rgba(255,255,255,.12);color:#fff;display:grid;place-items:center}
.mobile-menu nav{display:flex;flex-direction:column;gap:20px}
.mobile-menu nav a{color:#fff;font-size:19px;font-weight:600;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.mobile-menu nav a.is-active{color:var(--brand)}
.mobile-menu .btn{width:100%;margin-top:auto}

/* ---------- Hero ---------- */
.hero{padding:56px 0 var(--sec-pad)}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{
  font-size:clamp(32px,5.2vw,64px);line-height:1.12;font-weight:800;
  letter-spacing:-.02em;color:var(--ink);margin-top:20px;
}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero__sub{margin-top:20px;font-size:clamp(16px,1.5vw,18.5px);line-height:1.8;color:var(--text);max-width:560px}
.hero__actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero__figure{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/11;border:1px solid var(--line);background:#ddd}
.hero__figure img{width:100%;height:100%;object-fit:cover}
.hero__figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,17,19,.02) 0%,rgba(14,17,19,.42) 100%);
}
.hero__figure-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;color:#fff;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  background:rgba(14,17,19,.5);border:1px solid rgba(255,255,255,.25);
  padding:7px 15px;border-radius:var(--r-pill);backdrop-filter:blur(6px);
}
.trust-bar{
  margin-top:48px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  border-top:1px solid var(--line);padding-top:26px;max-width:760px;
}
.trust-bar div strong{
  display:block;font-family:var(--mono);font-size:clamp(24px,2.6vw,32px);
  color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-weight:700;
}
.trust-bar div span{display:block;font-size:13.5px;color:var(--muted);margin-top:4px}

/* ---------- 问句卡 ---------- */
.ask-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ask-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;display:flex;gap:20px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.ask-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.ask-card__num{
  font-family:var(--mono);font-size:34px;font-weight:700;line-height:1;
  color:#DAD5C9;flex-shrink:0;font-variant-numeric:tabular-nums;
}
.ask-card h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5}
.ask-card p{font-size:14.5px;color:var(--muted);margin-top:8px}

/* ---------- 方案区 ---------- */
.plan-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.plan-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.plan-main:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.plan-main__media{aspect-ratio:16/8;overflow:hidden;background:#e9e6df}
.plan-main__media img{width:100%;height:100%;object-fit:cover}
.plan-main__body{padding:32px;display:flex;flex-direction:column;gap:16px;flex:1}
.plan-main h3{font-size:23px;font-weight:700;color:var(--ink);line-height:1.35}
.plan-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text);line-height:1.8;margin-top:10px}
.plan-list li::before{content:"";position:absolute;left:0;top:13px;width:8px;height:2px;background:var(--brand);border-radius:2px}
.plan-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.plan-mini{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:12px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.plan-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.plan-mini h3{font-size:19px;font-weight:600;color:var(--ink)}
.plan-mini p{font-size:14.5px;color:var(--muted)}
.plan-mini .link-more{margin-top:auto;align-self:flex-start}

/* ---------- 数据区 ---------- */
.stats{background:var(--ink);color:#fff;border-radius:0}
.stats .container{padding-top:var(--sec-pad);padding-bottom:var(--sec-pad)}
.stats h2{font-size:clamp(26px,3.6vw,38px);font-weight:700;color:#fff;line-height:1.25}
.stats__lead{margin-top:14px;font-size:15px;color:rgba(255,255,255,.66);max-width:560px}
.stats__wrap{display:grid;grid-template-columns:repeat(4,1fr) .9fr;gap:24px;margin-top:52px;align-items:center}
.stat{border-left:1px solid rgba(255,255,255,.14);padding-left:20px}
.stat strong{
  display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.4vw,42px);font-weight:700;letter-spacing:-.02em;color:#fff;
}
.stat strong i{font-style:normal;color:var(--brand);font-size:.62em;margin-left:2px}
.stat span{display:block;font-size:12.5px;letter-spacing:.04em;color:rgba(255,255,255,.55);margin-top:6px}
.stats__figure{border-radius:var(--r-md);overflow:hidden;aspect-ratio:1/1;border:1px solid rgba(255,255,255,.14)}
.stats__figure img{width:100%;height:100%;object-fit:cover;opacity:.92}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-grid > :first-child{grid-column:span 2}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.news-card__media{display:block;aspect-ratio:16/10;overflow:hidden;background:#eae7e0}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-card__media img{transform:scale(1.04)}
.news-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{
  display:inline-block;align-self:flex-start;font-size:12.5px;font-weight:600;
  letter-spacing:.04em;padding:4px 11px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-dark);
}
.badge--jade{background:var(--jade-soft);color:#0a7f71}
.badge--gray{background:#EFEDE7;color:var(--muted)}
.news-card h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink)}
.news-card h3 a:hover{color:var(--brand)}
.news-card p{font-size:14px;color:var(--muted);line-height:1.75}
.news-card__meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);letter-spacing:.03em;padding-top:12px;border-top:1px solid var(--line)}
.news-card--feature{flex-direction:row}
.news-card--feature .news-card__media{width:48%;aspect-ratio:auto;flex-shrink:0}
.news-card--feature .news-card__body{padding:32px}
.news-card--feature h3{font-size:22px;line-height:1.4}
.news-card--feature p{font-size:15px}
.empty-state{
  grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--r-md);
  background:#FBF9F5;padding:56px 24px;text-align:center;
}
.empty-state i{font-size:26px;color:#C9C4B7}
.empty-state p{margin-top:14px;font-size:15px;color:var(--muted)}
.empty-state a{margin-top:14px;display:inline-block;font-size:14.5px;font-weight:600;color:var(--brand)}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;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:24px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq__q:hover{color:var(--brand)}
.faq__q i{flex-shrink:0;font-size:14px;color:var(--brand);transition:transform .26s var(--ease)}
.faq__item.is-open .faq__q i{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq__a p{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--text);max-width:760px}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);border-radius:var(--r-lg);padding:clamp(32px,5vw,56px);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,36,.28),transparent 70%);
}
.cta-band h2{font-size:clamp(24px,3vw,32px);font-weight:700;color:#fff;line-height:1.3;position:relative}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.66);max-width:520px;position:relative}

/* ---------- 表单弹层 ---------- */
.modal{
  position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:24px;
  background:rgba(14,17,19,.6);opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s;
}
.modal.is-open{opacity:1;visibility:visible}
.modal__box{
  width:100%;max-width:520px;background:#fff;border-radius:var(--r-lg);
  box-shadow:var(--sh-2);padding:32px;position:relative;
  transform:translateY(16px);transition:transform .3s var(--ease);
  max-height:92vh;overflow:auto;
}
.modal.is-open .modal__box{transform:translateY(0)}
.modal__close{
  position:absolute;right:18px;top:18px;width:38px;height:38px;border-radius:var(--r-pill);
  background:#F2F0EB;color:var(--ink);display:grid;place-items:center;
}
.modal__close:hover{background:var(--brand-soft);color:var(--brand-dark)}
.modal h3{font-size:22px;font-weight:700;color:var(--ink)}
.modal__desc{font-size:14.5px;color:var(--muted);margin-top:10px}
.form-grid{display:grid;gap:16px;margin-top:24px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:15px;color:var(--ink);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);
}
.field.has-error input,.field.has-error select{border-color:var(--brand-dark)}
.field__err{font-size:13px;color:var(--brand-dark);margin-top:6px;display:none}
.field.has-error .field__err{display:block}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7}
.check input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand);flex-shrink:0}
.form-note{font-size:13.5px;padding:12px 16px;border-radius:var(--r-sm);display:none}
.form-note.is-ok{display:block;background:var(--jade-soft);color:#0a7f71}
.form-note.is-err{display:block;background:var(--brand-soft);color:var(--brand-dark)}
.form-success{display:none;text-align:center;padding:28px 0 8px}
.form-success.is-on{display:block}
.form-success i{font-size:40px;color:var(--jade)}
.form-success h4{margin-top:16px;font-size:19px;font-weight:700;color:var(--ink)}
.form-success p{margin-top:10px;font-size:14.5px;color:var(--muted)}

/* ---------- 隐私说明 ---------- */
.privacy{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.privacy h2{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--ink);line-height:1.3}
.privacy p{margin-top:16px;font-size:15px;line-height:1.9}
.privacy-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:32px;box-shadow:var(--sh-1);
}
.privacy-card ul li{position:relative;padding-left:26px;font-size:15px;margin-bottom:14px;line-height:1.8}
.privacy-card ul li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;color:var(--jade);font-size:13px;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);margin-top:var(--sec-pad);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo__text b{color:#fff}
.footer-brand .logo__text span{color:rgba(255,255,255,.55)}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;max-width:280px;color:rgba(255,255,255,.6)}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.05em;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.66);padding:6px 0}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:960px}
  .stats__wrap{grid-template-columns:repeat(4,1fr);}
  .stats__figure{display:none}
}
@media (max-width:1023px){
  .site-header{padding:0 16px;top:12px}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:grid}
  .hero__grid{grid-template-columns:1fr;gap:36px}
  .hero__figure{aspect-ratio:16/10}
  .plan-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .news-grid > :first-child{grid-column:span 2}
  .privacy{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sec-pad:56px}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .ask-grid{grid-template-columns:1fr}
  .trust-bar{grid-template-columns:1fr 1fr;gap:20px}
  .news-grid{grid-template-columns:1fr}
  .news-grid > :first-child{grid-column:span 1}
  .news-card--feature{flex-direction:column}
  .news-card--feature .news-card__media{width:100%;aspect-ratio:16/10}
  .news-card--feature .news-card__body{padding:24px}
  .stats__wrap{grid-template-columns:1fr 1fr;gap:28px;margin-top:36px}
  .hero__actions .btn{width:100%}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .modal{padding:0;place-items:end center}
  .modal__box{border-radius:var(--r-lg) var(--r-lg) 0 0;max-width:100%;transform:translateY(24px)}
  .faq__q{font-size:16px;padding:20px 0}
}
@media (max-width:520px){
  .logo__text span{display:none}
  .hero__figure-tag{font-size:12px;left:14px;bottom:14px}
  .plan-mini,.plan-main__body,.privacy-card{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .stat{padding-left:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --brand:#FF5A24;
  --brand-deep:#C63A0D;
  --brand-soft:#FFE6DC;
  --jade:#0FB5A0;
  --jade-soft:#E1F6F3;
  --ink:#0E1113;
  --ink-2:#1B2024;
  --text:#3A4045;
  --muted:#6E7378;
  --line:#E3E0D8;
  --paper:#F5F3EF;
  --white:#FFFFFF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,17,19,.04), 0 10px 26px -16px rgba(14,17,19,.18);
  --sh-2:0 2px 4px rgba(14,17,19,.06), 0 22px 44px -20px rgba(14,17,19,.26);
  --ease:cubic-bezier(.22,1,.36,1);
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--jade);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.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}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -14px rgba(255,90,36,.85)}
.btn--primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0) scale(.98)}
.btn--ghost{background:var(--white);color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--ink);background:#FBFAF8;transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn--ghost:active{transform:translateY(0) scale(.98)}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:#000;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--ink);border-bottom:2px solid var(--brand);padding-bottom:2px}
.link-arrow i{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--brand-deep)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:14px;z-index:120;padding:0 20px;transition:top .25s var(--ease)}
.nav-shell{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:26px;
  padding:9px 12px 9px 16px;
  background:rgba(255,255,255,.84);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid var(--line);border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:box-shadow .28s var(--ease),padding .28s var(--ease),background .28s var(--ease);
}
.site-header.is-scrolled .nav-shell{box-shadow:var(--sh-2);padding:6px 10px 6px 16px;background:rgba(255,255,255,.94)}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),#FF8A4C);
  color:#fff;display:grid;place-items:center;font-size:18px;font-weight:800;
  box-shadow:0 8px 18px -10px rgba(255,90,36,.9);
}
.logo__text{display:flex;flex-direction:column;line-height:1.14}
.logo__text b{font-size:16px;color:var(--ink);font-weight:800;letter-spacing:-.015em}
.logo__text span{font-size:11.5px;color:var(--muted);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;padding:9px 14px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:500;color:var(--text);
}
.nav-links a:hover{color:var(--ink);background:#F1EEE8}
.nav-links a.is-active{color:var(--ink);font-weight:700}
.nav-links a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-cta{height:40px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:16px;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--ink)}

/* ---------- 面包屑 & 文章头 ---------- */
.article-top{padding:calc(34px + 12px) 0 0}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);margin-bottom:16px;
}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .crumb-sep{color:#C7C2B8}
.breadcrumb .crumb-current{color:var(--ink);font-weight:600}
.article-head{border-bottom:1px solid var(--line);padding-bottom:26px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.badge--brand{background:var(--brand-soft);color:var(--brand-deep)}
.badge--jade{background:var(--jade-soft);color:#0A8477}
.badge--grey{background:#ECEAE4;color:var(--muted)}
.article-head h1{
  font-size:clamp(28px,4.4vw,46px);line-height:1.2;font-weight:800;
  letter-spacing:-.02em;margin:16px 0 0;max-width:24ch;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:14px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7C2B8}
.article-meta time,.article-meta span{font-variant-numeric:tabular-nums}
.hero-figure{
  margin:clamp(26px,4vw,42px) 0 0;
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);position:relative;
  background:#E9E6DF;
}
.hero-figure img{width:100%;aspect-ratio:16/7;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,17,19,0) 45%,rgba(14,17,19,.28));
}
.hero-figure figcaption{
  position:absolute;left:20px;bottom:16px;z-index:2;
  font-size:13px;color:rgba(255,255,255,.9);letter-spacing:.03em;
}

/* ---------- 正文 ---------- */
.article-body{padding:clamp(36px,5vw,60px) 0 clamp(40px,5vw,64px)}
.prose{max-width:740px;margin:0 auto;font-size:16.5px;line-height:1.9;color:var(--text)}
.prose > * + *{margin-top:18px}
.prose p{margin:0}
.prose > p:first-of-type{font-size:17.5px;color:var(--ink-2)}
.prose h2{
  position:relative;font-size:clamp(21px,2.6vw,27px);line-height:1.35;
  margin:44px 0 14px;padding-left:14px;letter-spacing:-.015em;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  border-radius:3px;background:var(--brand);
}
.prose h3{font-size:19px;line-height:1.45;margin:28px 0 10px;font-weight:600}
.prose h4{font-size:16.5px;margin:22px 0 8px;font-weight:600}
.prose ul,.prose ol{padding-left:22px;line-height:1.85}
.prose li + li{margin-top:6px}
.prose li::marker{color:var(--brand)}
.prose a{color:var(--brand-deep);font-weight:600;border-bottom:1px solid rgba(198,58,13,.35)}
.prose a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.prose blockquote{
  margin:26px 0;padding:16px 20px;background:#F1EEE8;
  border-left:3px solid var(--brand);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink-2);font-size:16px;
}
.prose blockquote p + p{margin-top:10px}
.prose img{border-radius:var(--r-md);margin:26px 0;border:1px solid var(--line)}
.prose img + em,.prose figcaption{display:block;font-size:13.5px;color:var(--muted);text-align:center;margin-top:-16px;margin-bottom:24px;font-style:normal}
.prose code{
  font-family:var(--mono);font-size:14px;background:#EFEDE8;
  padding:2px 6px;border-radius:6px;color:var(--ink-2);
}
.prose pre{
  background:var(--ink);color:#E9E6DF;padding:18px 20px;border-radius:var(--r-md);
  overflow-x:auto;font-family:var(--mono);font-size:13.5px;line-height:1.7;
}
.prose pre code{background:none;color:inherit;padding:0}
.prose table{
  width:100%;border-collapse:collapse;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
  display:block;overflow-x:auto;
}
.prose th{background:#EFEDE8;text-align:left;font-weight:600;color:var(--ink)}
.prose th,.prose td{padding:11px 14px;border:1px solid var(--line);white-space:nowrap}
.prose hr{border:0;border-top:1px solid var(--line);margin:34px 0}

/* 空态 */
.empty-state{
  max-width:740px;margin:0 auto;text-align:center;
  border:1px dashed #D8D3C9;background:var(--white);
  border-radius:var(--r-lg);padding:clamp(36px,6vw,64px) 24px;
}
.empty-state i{font-size:30px;color:#C7C2B8}
.empty-state h2{font-size:22px;margin:16px 0 8px}
.empty-state p{font-size:15px;color:var(--muted)}
.empty-state .btn{margin-top:22px}

/* ---------- 分隔与相关推荐 ---------- */
.section-divider{border:0;border-top:1px solid var(--line);margin:0}
.related{padding:clamp(48px,6vw,84px) 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.8vw,30px);letter-spacing:-.018em}
.section-head p{font-size:14.5px;color:var(--muted);margin-top:8px;max-width:56ch}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D6D1C6}
.card__media{aspect-ratio:16/10;overflow:hidden;background:#E9E6DF}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card__media img{transform:scale(1.04)}
.card__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card__body h3{font-size:18px;line-height:1.45;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__body p{font-size:14px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card__meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);letter-spacing:.03em;font-variant-numeric:tabular-nums}
.back-link{margin-top:32px}

/* ---------- CTA 横条 ---------- */
.cta-wrap{padding:0 0 clamp(56px,7vw,96px)}
.cta-band{
  background:var(--ink);color:#C9CED2;border-radius:var(--r-lg);
  padding:clamp(28px,4vw,46px);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,36,.34),rgba(255,90,36,0) 68%);
}
.cta-band > *{position:relative;z-index:1}
.cta-band h3{color:#fff;font-size:clamp(21px,2.6vw,28px);letter-spacing:-.015em}
.cta-band p{font-size:14.5px;margin-top:10px;max-width:52ch;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 表单弹层 ---------- */
.modal{position:fixed;inset:0;z-index:200;display:none}
.modal.is-open{display:block}
.modal__backdrop{position:absolute;inset:0;background:rgba(14,17,19,.55);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);animation:fadeIn .22s var(--ease)}
.modal__panel{
  position:relative;z-index:2;width:min(560px,calc(100% - 32px));
  margin:6vh auto 0;background:var(--white);border-radius:var(--r-lg);
  box-shadow:var(--sh-2);padding:clamp(24px,3.4vw,36px);
  max-height:88vh;overflow-y:auto;animation:rise .3s var(--ease);
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
.modal__close{
  position:absolute;right:16px;top:16px;width:36px;height:36px;border-radius:50%;
  background:#F1EEE8;color:var(--ink);font-size:16px;line-height:1;
  display:grid;place-items:center;
}
.modal__close:hover{background:var(--brand-soft);color:var(--brand-deep)}
.modal__panel h3{font-size:22px;padding-right:40px}
.modal__desc{font-size:14.5px;color:var(--muted);margin-top:10px}
.form{margin-top:22px;display:grid;gap:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-sm);font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,90,36,.16);
}
.field.has-error input,.field.has-error select{border-color:var(--brand-deep)}
.field .err{display:none;font-size:13px;color:var(--brand-deep);margin-top:6px}
.field.has-error .err{display:block}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);line-height:1.7}
.check input{width:18px;height:18px;margin-top:3px;flex-shrink:0;accent-color:var(--brand)}
.notice{display:none;font-size:13.5px;padding:10px 14px;border-radius:var(--r-sm)}
.notice.is-error{display:block;background:var(--brand-soft);color:var(--brand-deep)}
.form-success{display:none;text-align:center;padding:28px 8px}
.form-success.is-open{display:block}
.form-success i{font-size:34px;color:var(--jade)}
.form-success h4{font-size:19px;margin:14px 0 8px}
.form-success p{font-size:14.5px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#A9AFB4;padding:clamp(48px,6vw,72px) 0 26px;margin-top:clamp(40px,6vw,80px)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo__text b{color:#fff}
.footer-brand .logo__text span{color:#8E9499}
.footer-brand p{font-size:13.5px;line-height:1.85;color:#8E9499;max-width:34ch}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:.04em;margin-bottom:14px;font-weight:600}
.footer-col a{display:block;font-size:14.5px;color:#A9AFB4;padding:5px 0}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#7E858A;font-variant-numeric:tabular-nums;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
}
@media (max-width:1023px){
  .site-header{top:10px;padding:0 14px}
  .nav-links{
    position:fixed;inset:0;z-index:130;
    display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:18px;
    margin:0;padding:88px 28px 40px;
    background:rgba(245,243,239,.98);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-links a{font-size:19px;padding:14px 8px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-links a.is-active::after{left:8px;right:auto;width:26px;bottom:6px}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-cta{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-head h1{max-width:100%}
  .hero-figure img{aspect-ratio:16/10}
  .card-grid{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .modal__panel{width:100%;max-width:none;margin:auto 0 0;border-radius:var(--r-lg) var(--r-lg) 0 0;max-height:92vh}
  .modal{display:none}
  .modal.is-open{display:flex;align-items:flex-end}
  .btn{height:46px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .prose{font-size:16px}
  .article-meta{font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --brand:#FF5A24;
  --brand-dark:#C63A0D;
  --brand-soft:#FFE6DC;
  --jade:#0FB5A0;
  --jade-soft:#E0F7F3;
  --ink:#0E1113;
  --ink-2:#1B2024;
  --text:#3A4045;
  --muted:#6E7378;
  --line:#E3E0D8;
  --paper:#F5F3EF;
  --white:#FFFFFF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,17,19,.04),0 10px 26px -16px rgba(14,17,19,.18);
  --sh-2:0 2px 4px rgba(14,17,19,.06),0 22px 44px -20px rgba(14,17,19,.26);
  --ease:cubic-bezier(.22,1,.36,1);
  --container:1200px;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC",system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--jade);outline-offset:2px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:clamp(56px,7vw,100px) 0}
.section--tight{padding:clamp(40px,5vw,68px) 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(255,90,36,.85)}
.btn--primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0) scale(.98)}
.btn--ghost{background:var(--white);color:var(--ink);border:1px solid var(--line)}
.btn--ghost:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn--ghost:active{transform:translateY(0) scale(.98)}
.btn--onDark{background:var(--white);color:var(--ink);border:1px solid rgba(255,255,255,.2)}
.btn--onDark:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--ink);font-weight:600;font-size:15px;
  padding-bottom:2px;border-bottom:2px solid var(--brand);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.link-arrow i{transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--brand-dark);border-color:var(--brand-dark)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;line-height:1.5;
  background:#EFECE5;color:var(--muted);
}
.badge--brand{background:var(--brand-soft);color:var(--brand-dark)}
.badge--jade{background:var(--jade-soft);color:#0A7F71}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:14px 0}
.nav-shell{
  max-width:var(--container);margin:0 auto;
  padding:10px 12px 10px 16px;
  display:flex;align-items:center;gap:16px;
  background:rgba(255,255,255,.84);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:box-shadow .3s var(--ease),padding .3s var(--ease),width .3s var(--ease);
}
.site-header.is-scrolled .nav-shell{box-shadow:var(--sh-2);padding:8px 10px 8px 14px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:36px;height:36px;flex-shrink:0;border-radius:11px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;
  box-shadow:0 8px 18px -10px rgba(255,90,36,.9);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__text b{font-size:15.5px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.logo__text span{font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;padding:8px 12px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:500;color:var(--text);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--ink);background:#F0EDE7}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink);font-weight:700}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-cta{height:42px;padding:0 20px;font-size:14px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-pill);
  align-items:center;justify-content:center;font-size:17px;color:var(--ink);
  border:1px solid var(--line);background:var(--white);margin-left:auto;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.66);margin-bottom:16px;
}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.breadcrumb strong{color:#fff;font-weight:600}

/* ---------- 内页首屏 ---------- */
.page-hero{position:relative;overflow:hidden;isolation:isolate}
.page-hero__bg{
  position:absolute;inset:0;
  width:100%;height:100%;object-fit:cover;z-index:-2;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(115deg,rgba(14,17,19,.93) 0%,rgba(14,17,19,.74) 48%,rgba(14,17,19,.42) 100%);
}
.page-hero__inner{
  min-height:300px;
  padding-top:clamp(52px,6vw,76px);
  padding-bottom:clamp(48px,6vw,72px);
  display:flex;flex-direction:column;justify-content:center;
}
.page-hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,52px);line-height:1.14;font-weight:800;
  letter-spacing:-.02em;max-width:17em;margin-bottom:16px;
}
.page-hero h1 em{font-style:normal;color:var(--brand)}
.page-hero__sub{
  color:rgba(255,255,255,.82);font-size:clamp(15px,1.6vw,17.5px);
  max-width:46em;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:14px 40px;margin-top:34px;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.16);
}
.hero-facts div{display:flex;flex-direction:column;gap:2px}
.hero-facts b{
  font-family:var(--mono);font-size:24px;font-weight:700;color:#fff;
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-facts span{font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.02em}

/* ---------- 通用区块标题 ---------- */
.sec-head{max-width:760px;margin-bottom:clamp(32px,4vw,48px)}
.sec-head h2{
  font-size:clamp(25px,3.2vw,38px);line-height:1.2;font-weight:700;
  margin:12px 0 14px;
}
.sec-head p{color:var(--muted);font-size:16px}

/* ---------- 步骤时间线 ---------- */
.steps{display:grid;gap:0;margin-top:8px}
.step{
  position:relative;
  display:grid;grid-template-columns:72px 1fr;gap:26px;
  padding-bottom:clamp(28px,3.4vw,44px);
}
.step:last-child{padding-bottom:0}
.step:not(:last-child)::before{
  content:"";position:absolute;left:35.5px;top:70px;bottom:10px;width:1px;background:var(--line);
}
.step__no{
  width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--white);border:1px solid var(--line);
  font-family:var(--mono);font-size:16px;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  box-shadow:var(--sh-1);transition:border-color .22s var(--ease),color .22s var(--ease),background-color .22s var(--ease);
}
.step:hover .step__no{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft)}
.step__body{padding-top:6px}
.step__body h3{font-size:19px;font-weight:700;line-height:1.4;margin-bottom:8px}
.step__body p{font-size:15px;color:var(--text);max-width:60em}
.step__list{margin-top:12px;display:grid;gap:8px}
.step__list li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);
}
.step__list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--brand);opacity:.75;
}
.step__note{
  margin-top:14px;display:inline-flex;gap:8px;align-items:flex-start;
  background:#EFECE5;border-radius:var(--r-sm);padding:10px 14px;
  font-size:13.5px;color:var(--text);line-height:1.7;
}
.step__note i{color:var(--brand-dark);margin-top:4px}

/* ---------- 核对要点条 ---------- */
.tips{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(26px,3.4vw,40px);box-shadow:var(--sh-1);
  display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,36px);
}
.tip h3{
  font-size:17px;font-weight:700;margin:14px 0 8px;
  display:flex;align-items:center;gap:10px;
}
.tip h3 i{color:var(--brand);font-size:15px}
.tip p{font-size:14.5px;color:var(--muted)}
.tip__tag{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;
  color:var(--brand-dark);background:var(--brand-soft);
  padding:3px 9px;border-radius:var(--r-pill);font-weight:700;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 2px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-dark)}
.faq-q .faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--ink);background:#EFECE5;
  transition:transform .26s var(--ease),background-color .26s var(--ease),color .26s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-a p{padding:0 46px 24px 2px;font-size:15px;color:var(--muted)}

/* ---------- 相关页面 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:clamp(24px,2.6vw,32px);box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6D1C6}
.rel-card h3{font-size:19px;font-weight:700;line-height:1.4}
.rel-card p{font-size:14.5px;color:var(--muted)}
.rel-card__arrow{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--brand-dark);
}
.rel-card__arrow i{transition:transform .22s var(--ease)}
.rel-card:hover .rel-card__arrow i{transform:translateX(4px)}
.rel-media{
  border-radius:var(--r-sm);overflow:hidden;aspect-ratio:16/10;background:#EAE6DE;
}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .rel-media img{transform:scale(1.03)}

/* ---------- 隐私说明 ---------- */
.privacy{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(28px,3.4vw,44px);
}
.privacy h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:14px}
.privacy p{font-size:15px;color:var(--muted);margin-bottom:12px;max-width:62em}
.privacy ul{display:grid;gap:8px;margin-top:6px}
.privacy li{
  position:relative;padding-left:24px;font-size:14.5px;color:var(--text);
}
.privacy li i{
  position:absolute;left:0;top:1px;color:var(--jade);font-size:13px;
}

/* ---------- 底部 CTA ---------- */
.cta-band{background:var(--ink);color:#fff}
.cta-band__inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:clamp(40px,5vw,64px) 0;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,32px);line-height:1.25;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.66);font-size:15px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:clamp(48px,6vw,72px) 0 28px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:clamp(24px,3.4vw,44px);
  padding-bottom:clamp(32px,4vw,48px);border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;max-width:34em;color:rgba(255,255,255,.6)}
.site-footer .logo__text b{color:#fff}
.site-footer .logo__text span{color:rgba(255,255,255,.55)}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:16px}
.footer-col a{
  display:block;font-size:14px;padding:6px 0;color:rgba(255,255,255,.7);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--brand);transform:translateX(3px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:24px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 弹层 ---------- */
.modal{
  position:fixed;inset:0;z-index:200;display:none;
  align-items:center;justify-content:center;padding:24px;
}
.modal.is-open{display:flex}
.modal__mask{position:absolute;inset:0;background:rgba(14,17,19,.55);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.modal__panel{
  position:relative;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;
  background:var(--white);border-radius:var(--r-lg);box-shadow:var(--sh-2);
  padding:clamp(24px,3vw,34px);
  animation:pop .3s var(--ease);
}
@keyframes pop{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.modal__close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--muted);
  background:#F2EFE9;transition:background-color .2s var(--ease),color .2s var(--ease);
}
.modal__close:hover{background:var(--brand-soft);color:var(--brand-dark)}
.modal__panel h3{font-size:21px;margin-bottom:8px}
.modal__panel > p{font-size:14.5px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:14.5px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);
}
.field.has-error input,.field.has-error select{border-color:var(--brand-dark)}
.field__err{display:none;font-size:13px;color:var(--brand-dark);margin-top:6px}
.field.has-error .field__err{display:block}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7}
.check input{width:17px;height:17px;margin-top:4px;flex-shrink:0;accent-color:var(--brand)}
.form-msg{display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-sm);font-size:14px}
.form-msg.is-ok{display:block;background:var(--jade-soft);color:#0A7F71}
.form-msg.is-err{display:block;background:var(--brand-soft);color:var(--brand-dark)}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:960px}
}
@media (max-width:1023px){
  .nav-shell{backdrop-filter:none;-webkit-backdrop-filter:none;background:#fff}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .nav-links{
    position:fixed;inset:0;z-index:150;
    display:flex;flex-direction:column;justify-content:center;align-items:center;gap:22px;
    background:rgba(255,255,255,.985);padding:96px 28px 48px;
    opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
  }
  .nav-links.is-open{opacity:1;visibility:visible}
  .nav-links a{font-size:18px;font-weight:600;padding:10px 18px}
  .nav-links a::after{left:18px;right:18px}
  .tips{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-band__inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .step{grid-template-columns:1fr;gap:12px;padding-bottom:30px}
  .step:not(:last-child)::before{display:none}
  .step__no{width:48px;height:48px;font-size:14px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn{width:100%}
  .nav-toggle .btn{width:auto}
  .footer-grid{grid-template-columns:1fr}
  .modal{padding:0;align-items:flex-end}
  .modal__panel{max-width:100%;border-radius:var(--r-lg) var(--r-lg) 0 0;max-height:92vh;animation:rise .32s var(--ease)}
  @keyframes rise{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
}
@media (max-width:479px){
  .page-hero h1{font-size:26px}
  .hero-facts{gap:12px 24px}
  .hero-facts b{font-size:20px}
  .faq-q{font-size:15.5px;padding:18px 2px}
  .faq-a p{padding-right:8px}
  .page-hero__bg{height:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand:#FF5A24;
  --brand-deep:#C63A0D;
  --brand-soft:#FFE6DC;
  --jade:#0FB5A0;
  --jade-soft:#E4F6F2;
  --ink:#0E1113;
  --ink-2:#1B2024;
  --text:#3A4045;
  --muted:#6E7378;
  --line:#E3E0D8;
  --paper:#F5F3EF;
  --white:#FFFFFF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,17,19,.04),0 10px 26px -16px rgba(14,17,19,.18);
  --sh-2:0 2px 4px rgba(14,17,19,.06),0 22px 44px -20px rgba(14,17,19,.26);
  --ease:cubic-bezier(.22,1,.36,1);
  --container:1200px;
  --gap:24px;
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*{box-sizing:border-box;}
*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{color:var(--ink);font-weight:700;line-height:1.2;}
:focus-visible{outline:2px solid var(--jade);outline-offset:2px;border-radius:6px;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.section{padding:clamp(56px,7vw,104px) 0;}
.section--white{background:var(--white);}
.section-head{max-width:760px;margin-bottom:clamp(28px,3.4vw,44px);}
.section-head h2{font-size:clamp(26px,3.2vw,38px);letter-spacing:-.01em;}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.08em;font-weight:600;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:5px 12px;border-radius:var(--r-pill);margin-bottom:16px;
}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .18s var(--ease),background-color .18s var(--ease),
             box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0) scale(.98);}
.btn--ghost{background:var(--white);color:var(--ink);border:1px solid var(--line);}
.btn--ghost:hover{border-color:var(--ink);background:#FBFAF8;transform:translateY(-2px);}
.btn--ghost:active{transform:translateY(0) scale(.98);}
.btn--link{
  height:auto;padding:0 0 4px;border-radius:0;background:none;color:var(--ink);
  border-bottom:2px solid var(--brand);font-weight:600;
}
.btn--link:hover{color:var(--brand-deep);border-color:var(--brand-deep);}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:14px;z-index:60;
  padding:0 24px;
  transition:box-shadow .24s var(--ease);
}
.nav-shell{
  max-width:var(--container);margin:0 auto;
  display:flex;align-items:center;gap:18px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  padding:8px 10px 8px 16px;
  transition:box-shadow .24s var(--ease),padding .24s var(--ease);
}
.site-header.is-scrolled .nav-shell{box-shadow:var(--sh-2);padding:6px 10px 6px 14px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo__mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-size:18px;font-weight:800;
  box-shadow:0 8px 18px -10px rgba(255,90,36,.9);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__text b{font-size:15px;color:var(--ink);font-weight:800;letter-spacing:.01em;}
.logo__text span{font-size:11.5px;color:var(--muted);letter-spacing:.04em;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-links a{
  position:relative;
  padding:9px 14px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text);
}
.nav-links a:hover{background:var(--paper);color:var(--ink);}
.nav-links a.is-active{color:var(--ink);font-weight:700;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:2px;width:18px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-cta{flex:0 0 auto;height:42px;padding:0 20px;font-size:14.5px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--white);color:var(--ink);
  font-size:16px;
}
.nav-toggle:hover{border-color:var(--ink);}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--muted);margin-bottom:16px;
}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:#C9C4B9;}
.breadcrumb .current{color:var(--ink);font-weight:700;}

/* ---------- Hero 横幅 ---------- */
.hero{padding:clamp(20px,3vw,36px) 0 clamp(40px,5vw,72px);}
.hero__panel{
  position:relative;overflow:hidden;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:clamp(24px,3.6vw,52px);
}
.hero__panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(to right,rgba(14,17,19,.045) 0 1px,transparent 1px 46px),
    repeating-linear-gradient(to bottom,rgba(14,17,19,.045) 0 1px,transparent 1px 46px);
  mask-image:linear-gradient(135deg,rgba(0,0,0,.9),transparent 72%);
  -webkit-mask-image:linear-gradient(135deg,rgba(0,0,0,.9),transparent 72%);
}
.hero__inner{
  position:relative;display:grid;grid-template-columns:1.18fr .82fr;
  gap:clamp(28px,4vw,56px);align-items:center;
}
.hero h1{
  font-size:clamp(28px,3.6vw,46px);
  line-height:1.16;letter-spacing:-.02em;font-weight:800;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero__desc{margin-top:18px;font-size:16.5px;color:var(--text);max-width:56ch;}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero__stats{
  display:flex;flex-wrap:wrap;gap:12px 34px;margin-top:32px;
  padding-top:22px;border-top:1px solid var(--line);
}
.hero__stat b{
  display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:24px;color:var(--ink);letter-spacing:-.02em;
}
.hero__stat span{font-size:13px;color:var(--muted);}
.hero__figure{
  position:relative;aspect-ratio:1/1;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
.hero__figure img{width:100%;height:100%;object-fit:cover;}
.hero__figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,17,19,0) 52%,rgba(14,17,19,.42));
}
.hero__figure figcaption{
  position:absolute;left:18px;bottom:16px;z-index:2;
  color:#fff;font-size:13px;letter-spacing:.04em;
}

/* ---------- 对照说明 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);}
.compare-card{
  border-radius:var(--r-md);padding:clamp(22px,2.4vw,32px);
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
.compare-card--warn{background:var(--brand-soft);border-color:#F6C9B5;}
.compare-card--good{background:var(--jade-soft);border-color:#BEE6DE;}
.compare-card h3{
  display:flex;align-items:center;gap:10px;font-size:19px;margin-bottom:6px;
}
.compare-card--warn h3 i{color:var(--brand-deep);}
.compare-card--good h3 i{color:var(--jade);}
.compare-card .hint{font-size:13.5px;color:var(--muted);margin-bottom:18px;}
.compare-list li{
  display:flex;gap:12px;padding:14px 0;border-top:1px solid rgba(14,17,19,.08);
  font-size:15px;line-height:1.8;
}
.compare-list li:first-child{border-top:0;padding-top:0;}
.compare-list .idx{
  flex:0 0 auto;font-family:var(--mono);font-size:12.5px;font-weight:700;
  color:var(--ink);opacity:.5;padding-top:4px;
}

/* ---------- 检查清单 ---------- */
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 28px;}
.check-item{
  display:flex;gap:14px;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.check-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.check-item i{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--jade-soft);color:var(--jade);
  display:grid;place-items:center;font-size:12px;margin-top:2px;
}
.check-item h4{font-size:16.5px;margin-bottom:4px;}
.check-item p{font-size:14.5px;color:var(--muted);line-height:1.75;}

/* ---------- 图文信息卡 ---------- */
.info-stack{display:grid;gap:var(--gap);}
.info-card{
  display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);
  gap:clamp(20px,3vw,40px);align-items:center;
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;
  padding:clamp(18px,2.2vw,28px);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.info-card__media{
  aspect-ratio:16/10;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);
}
.info-card__media img{width:100%;height:100%;object-fit:cover;}
.info-card__body h3{font-size:21px;margin-bottom:10px;}
.info-card__body>p{font-size:15px;color:var(--text);}
.info-card__body ul{margin-top:16px;display:grid;gap:8px;}
.info-card__body li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);
}
.info-card__body li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:2px;border-radius:2px;background:var(--brand);
}
.info-card--reverse{grid-template-columns:minmax(0,1fr) minmax(0,360px);}
.info-card--reverse .info-card__media{order:2;}

/* ---------- FAQ ---------- */
.faq-list{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:first-child{border-top:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px clamp(18px,2.4vw,28px);
  font-size:17px;font-weight:600;color:var(--ink);text-align:left;line-height:1.55;
  transition:background-color .18s var(--ease);
}
.faq-q:hover{background:#FBFAF8;}
.faq-q .sign{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);color:var(--brand-deep);
  display:grid;place-items:center;font-size:13px;
  transition:transform .26s var(--ease),background-color .26s var(--ease),color .26s var(--ease);
}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);background:var(--brand);color:#fff;border-color:var(--brand);}
.faq-item.is-open .faq-q{background:#FBFAF8;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a p{
  padding:0 clamp(18px,2.4vw,28px) 22px;
  font-size:15px;color:var(--text);line-height:1.85;max-width:76ch;
}

/* ---------- 相关页面 ---------- */
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);}
.related-card{
  display:block;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-md);padding:26px 28px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6D1C6;}
.related-card span.tag{
  display:inline-block;font-size:12.5px;letter-spacing:.04em;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:var(--r-pill);padding:4px 11px;margin-bottom:14px;
}
.related-card h3{font-size:19px;margin-bottom:8px;}
.related-card p{font-size:14.5px;color:var(--muted);}
.related-card .arrow{
  margin-top:16px;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--ink);
}
.related-card:hover .arrow{color:var(--brand-deep);gap:12px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink);color:#fff;border-radius:var(--r-lg);
  padding:clamp(28px,3.6vw,48px);
  display:flex;flex-wrap:wrap;align-items:center;gap:24px 40px;
  box-shadow:var(--sh-2);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);flex:1 1 320px;}
.cta-band p{color:#B9BEC2;font-size:14.5px;margin-top:10px;max-width:60ch;}
.cta-band .btn--primary{flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C9CED2;margin-top:clamp(48px,6vw,88px);padding:clamp(48px,6vw,76px) 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px 28px;}
.footer-brand .logo__text b{color:#fff;}
.footer-brand .logo__text span{color:#8E9498;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#9AA0A4;max-width:34ch;}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.04em;margin-bottom:14px;}
.footer-col a{display:block;font-size:14px;color:#A8AEB2;padding:5px 0;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#82888C;
}

/* ---------- 弹层与表单 ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:120;display:none;
  align-items:center;justify-content:center;padding:24px;
  background:rgba(14,17,19,.55);
  -webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);
}
.modal-mask.is-open{display:flex;}
.modal{
  position:relative;width:100%;max-width:540px;background:var(--white);
  border-radius:var(--r-lg);box-shadow:var(--sh-2);
  padding:clamp(24px,3.4vw,36px);
  max-height:90vh;overflow-y:auto;
  animation:modalIn .3s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:translateY(0);}}
.modal h3{font-size:22px;margin-bottom:8px;}
.modal .modal-desc{font-size:14.5px;color:var(--muted);margin-bottom:22px;}
.modal-close{
  position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:50%;
  border:1px solid var(--line);color:var(--ink);display:grid;place-items:center;font-size:14px;
}
.modal-close:hover{background:var(--paper);border-color:var(--ink);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:7px;}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-sm);padding:0 14px;height:48px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:auto;padding:12px 14px;min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,90,36,.16);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--brand-deep);box-shadow:0 0 0 3px rgba(198,58,13,.12);
}
.field .error-msg{display:none;margin-top:6px;font-size:13px;color:var(--brand-deep);}
.field.has-error .error-msg{display:block;}
.field--check{display:flex;gap:10px;align-items:flex-start;}
.field--check input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand);}
.field--check label{font-weight:400;font-size:13.5px;color:var(--muted);margin:0;line-height:1.7;}
.field--check a{color:var(--brand-deep);text-decoration:underline;}
.form-success{
  display:none;text-align:center;padding:24px 6px 8px;
}
.form-success.is-visible{display:block;}
.form-success i{
  width:52px;height:52px;border-radius:50%;background:var(--jade-soft);color:var(--jade);
  display:grid;place-items:center;font-size:22px;margin:0 auto 16px;
}
.form-success h4{font-size:19px;margin-bottom:8px;}
.form-success p{font-size:14.5px;color:var(--muted);}
.alert-error{
  display:none;background:var(--brand-soft);color:var(--brand-deep);
  border:1px solid #F6C9B5;border-radius:var(--r-sm);
  padding:12px 16px;font-size:14px;margin-bottom:18px;
}
.alert-error.is-visible{display:block;}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(14px);}
.reveal.is-in{opacity:1;transform:none;transition:opacity .42s var(--ease),transform .42s var(--ease);}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .site-header{padding:0 16px;top:10px;}
  .container{padding:0 20px;}
  .nav-links{
    position:fixed;inset:0;margin:0;
    flex-direction:column;justify-content:center;align-items:stretch;
    gap:6px;padding:88px 28px 32px;
    background:rgba(255,255,255,.98);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    transform:translateY(-8px);opacity:0;visibility:hidden;
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
    z-index:70;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none;}
  .nav-links a{font-size:19px;padding:16px 12px;border-radius:var(--r-md);}
  .nav-links a.is-active::after{left:12px;transform:none;bottom:10px;width:22px;}
  .nav-toggle{display:grid;place-items:center;margin-left:auto;position:relative;z-index:80;}
  .nav-cta{height:40px;padding:0 16px;font-size:14px;}
  .hero__inner{grid-template-columns:1fr;}
  .hero__figure{max-width:440px;aspect-ratio:16/11;}
  .checklist{grid-template-columns:1fr;}
  .info-card,.info-card--reverse{grid-template-columns:1fr;}
  .info-card--reverse .info-card__media{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .compare-grid,.related-grid{grid-template-columns:1fr;}
  .hero__actions .btn{width:100%;}
  .hero__stats{gap:14px 26px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .nav-cta{display:none;}
  .faq-q{font-size:16px;}
}
@media (max-width:520px){
  .modal-mask{align-items:flex-end;padding:0;}
  .modal{max-width:none;border-radius:22px 22px 0 0;max-height:88vh;}
  .hero__panel{padding:20px;}
  .hero__stat b{font-size:21px;}
  .compare-card{padding:20px;}
  .check-item{padding:18px;}
}