/* roulang page: index */
/* ===== 设计变量 ===== */
:root{
  --c-primary:#0F4C48;
  --c-primary-600:#0B3733;
  --c-primary-700:#092C29;
  --c-accent:#F0663F;
  --c-accent-600:#D9542F;
  --c-mint:#7FC8C0;
  --bg:#FCFBF8;
  --bg-alt:#F2F5F3;
  --bg-soft:#F6F8F6;
  --card:#FFFFFF;
  --ink:#1E2A28;
  --ink-2:#5C6B68;
  --line:rgba(15,76,72,.10);
  --line-strong:#D8E2DF;
  --danger:#C0392B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(15,76,72,.06);
  --sh-md:0 8px 24px -12px rgba(15,76,72,.20);
  --sh-lg:0 24px 48px -24px rgba(15,76,72,.26);
  --sec-pad:clamp(64px,8vw,112px);
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

/* ===== 基础 reset ===== */
*,*::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(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ===== 排版 ===== */
h1{font-size:clamp(30px,4.2vw,50px);line-height:1.25;letter-spacing:-.01em;font-weight:800}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.35;letter-spacing:-.005em;font-weight:700}
h3{font-size:clamp(18px,1.4vw,20px);line-height:1.5;font-weight:600}
p{line-height:1.85}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(15,76,72,.08);color:var(--c-primary);
  font-size:13px;font-weight:600;letter-spacing:.04em;line-height:1.6;
}

/* ===== 容器 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-pill);
  border:1.5px solid transparent;background:transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;pointer-events:none}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:#0d423e}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-600)}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:rgba(15,76,72,.08)}
.btn-white-outline{border-color:rgba(255,255,255,.72);color:#fff}
.btn-white-outline:hover{background:rgba(255,255,255,.14)}
.btn-ghost{
  min-height:auto;padding:0;color:var(--c-primary);font-weight:600;
  border:0;border-radius:0;
}
.btn-ghost:hover{transform:none;box-shadow:none;color:var(--c-primary-700)}
.btn-ghost .arw{display:inline-block;transition:transform .18s ease}
.btn-ghost:hover .arw{transform:translateX(4px)}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px}
.arw{display:inline-block;transition:transform .18s ease}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(252,251,248,.88);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-md)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.header-left{display:flex;align-items:center;gap:34px;min-width:0}
.header-right{display:flex;align-items:center;gap:14px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:8px;
  background:var(--c-primary);color:#fff;display:grid;place-items:center;
}
.logo-mark svg{width:17px;height:17px}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.main-nav ul{display:flex;align-items:center;gap:28px}
.main-nav a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:var(--ink-2);white-space:nowrap;
  transition:color .18s ease;
}
.main-nav a:hover{color:var(--c-primary)}
.main-nav a.active{color:var(--c-primary);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:0;bottom:-4px;
  width:20px;height:2px;border-radius:2px;background:var(--c-primary);
}

/* 搜索 */
.search-wrap{position:relative;z-index:6}
.search-toggle{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:transparent;
  display:grid;place-items:center;cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease;
}
.search-toggle:hover{background:rgba(15,76,72,.06);border-color:rgba(15,76,72,.22)}
.search-toggle svg{width:17px;height:17px;stroke:var(--c-primary)}
.search-form{
  position:absolute;right:0;top:50%;width:220px;height:40px;
  display:flex;align-items:center;gap:6px;padding:0 5px 0 14px;
  background:#fff;border:1px solid var(--line-strong);border-radius:var(--r-pill);
  box-shadow:var(--sh-sm);
  opacity:0;pointer-events:none;
  transform:translateY(-50%) scale(.96);transform-origin:right center;
  transition:opacity .18s ease,transform .18s ease;
}
.search-form.is-open{opacity:1;pointer-events:auto;transform:translateY(-50%) scale(1)}
.search-form input{
  flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;line-height:1.6;
}
.search-form button{
  width:30px;height:30px;flex:0 0 30px;border-radius:50%;border:0;
  background:var(--c-primary);color:#fff;display:grid;place-items:center;cursor:pointer;
}
.search-form button svg{width:14px;height:14px;stroke:#fff}

/* 汉堡 */
.nav-toggle{
  display:none;position:relative;width:42px;height:42px;flex:0 0 42px;
  border-radius:10px;border:1px solid var(--line);background:transparent;cursor:pointer;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;border-radius:2px;
  background:var(--ink);transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span:nth-child(1){top:13px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:84%;max-width:340px;background:var(--bg);
  display:flex;flex-direction:column;
  padding:78px 22px 0;overflow-y:auto;
  box-shadow:var(--sh-lg);
  transform:translateX(102%);
  transition:transform .28s ease;
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(11,55,51,.42);
  opacity:0;pointer-events:none;transition:opacity .28s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer nav a{
  display:flex;align-items:center;min-height:52px;
  font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);
}
.drawer nav a.active{color:var(--c-primary);font-weight:600}
.drawer-cta{margin-top:auto;padding:18px 0 22px;background:var(--bg)}
.drawer-cta .btn{width:100%}
body.is-locked{overflow:hidden}

/* ===== 首屏 ===== */
.hero{padding-top:clamp(48px,6vw,84px)}
.hero-inner{
  display:grid;grid-template-columns:55fr 45fr;gap:56px;align-items:center;
  padding-bottom:clamp(56px,7vw,96px);
}
.hero-copy{display:flex;flex-direction:column;justify-content:center;min-height:clamp(520px,72vh,720px)}
.hero-copy .eyebrow{margin-bottom:22px}
.hero-copy h1{margin-bottom:20px}
.hero-sub{
  max-width:560px;font-size:clamp(16px,1.5vw,18px);
  line-height:1.8;color:var(--ink-2);margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:18px}
.hero-note{font-size:14px;line-height:1.7;color:var(--ink-2)}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-lg);background:var(--bg-alt);
}
.hero-media img{width:100%;aspect-ratio:4/5;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(165deg,rgba(15,76,72,.10),rgba(15,76,72,.30));
}
.hero-float{
  position:absolute;left:18px;bottom:18px;z-index:2;max-width:74%;
  display:flex;flex-direction:column;gap:2px;
  padding:16px 20px;background:#fff;border-radius:var(--r-md);
  box-shadow:var(--sh-lg);
}
.hero-float-num{font-size:22px;font-weight:800;color:var(--c-primary);line-height:1.3}
.hero-float-label{font-size:13px;line-height:1.6;color:var(--ink-2)}

/* ===== 信任条 ===== */
.trustbar{
  background:var(--bg-alt);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:clamp(28px,3.4vw,44px) 0;
}
.trust-list{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-list li{display:flex;flex-direction:column;gap:4px;padding:0 24px;border-left:1px solid var(--line)}
.trust-list li:first-child{border-left:0;padding-left:0}
.trust-num{font-size:22px;font-weight:800;color:var(--c-primary);line-height:1.3}
.trust-label{font-size:13px;line-height:1.65;color:var(--ink-2)}

/* ===== 板块通用 ===== */
.section{padding:var(--sec-pad) 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:780px;margin-bottom:clamp(32px,4vw,52px)}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:16px;color:var(--ink-2)}
.section-head-row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:clamp(32px,4vw,52px);
}
.section-head-row .section-head{margin-bottom:0}

/* ===== 三步上手 ===== */
.steps{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.steps::before{
  content:"";position:absolute;left:6%;right:6%;top:52px;z-index:0;
  border-top:1px dashed rgba(15,76,72,.28);
}
.step{
  position:relative;z-index:1;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--sh-sm);
  transition:transform .18s ease,box-shadow .18s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.step-num{
  display:block;margin-bottom:16px;font-size:40px;font-weight:800;
  line-height:1;letter-spacing:.02em;color:var(--c-primary);opacity:.24;
}
@supports (-webkit-text-stroke:1px #000){
  .step-num{color:transparent;opacity:1;-webkit-text-stroke:1.5px var(--c-primary)}
}
.step h3{margin-bottom:10px}
.step p{font-size:15px;color:var(--ink-2);line-height:1.8}

/* ===== 案例 2+1 ===== */
.proof-grid{
  display:grid;grid-template-columns:2fr 1fr;grid-template-rows:repeat(2,auto);
  gap:24px;align-items:stretch;
}
.proof-main{
  grid-row:1 / span 2;
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);transition:transform .18s ease,box-shadow .18s ease;
}
.proof-main:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.proof-main img{width:100%;aspect-ratio:16/10;object-fit:cover}
.proof-body{display:flex;flex-direction:column;gap:14px;padding:26px}
.proof-body h3{margin-top:2px}
.proof-body p{font-size:15px;color:var(--ink-2)}
.proof-points{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
  padding-top:16px;margin-top:auto;border-top:1px solid var(--line);
}
.proof-points div{display:flex;flex-direction:column;gap:2px}
.proof-points strong{font-size:18px;font-weight:800;color:var(--c-primary);line-height:1.4}
.proof-points span{font-size:13px;color:var(--ink-2);line-height:1.6}
.proof-side{
  display:flex;flex-direction:column;gap:12px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-sm);
  transition:transform .18s ease,box-shadow .18s ease;
}
.proof-side:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.proof-side p{font-size:15px;color:var(--ink-2)}
.proof-side .conclusion{
  margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);
  font-size:14px;font-weight:600;color:var(--c-primary);
}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  height:22px;padding:0 8px;border-radius:4px;
  background:rgba(15,76,72,.10);color:var(--c-primary);
  font-size:12px;font-weight:600;line-height:1;
}

/* ===== 最新信息列表 ===== */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{
  display:flex;gap:18px;padding:16px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-sm);transition:transform .18s ease,box-shadow .18s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.news-thumb{
  display:block;flex:0 0 160px;width:160px;height:110px;
  border-radius:10px;overflow:hidden;background:var(--bg-alt);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{display:flex;flex:1;min-width:0;flex-direction:column;gap:6px}
.news-body h3{
  font-size:17px;line-height:1.5;transition:color .18s ease;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-body h3{color:var(--c-primary)}
.news-body p{
  font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:6px;font-size:13px;color:var(--ink-2);
}
.news-meta .ghost-link{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:4px}
.news-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:180px;padding:24px;text-align:center;
  background:var(--bg-soft);border:1px dashed rgba(15,76,72,.18);border-radius:var(--r-md);
}
.news-empty svg{width:30px;height:30px;stroke:var(--c-primary)}
.news-empty-title{font-size:16px;font-weight:600;color:var(--ink)}
.news-empty-sub{font-size:14px;color:var(--ink-2)}

/* ===== FAQ ===== */
.faq{display:flex;max-width:820px;margin:0 auto;flex-direction:column;gap:12px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-sm);overflow:hidden;
}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;min-height:60px;padding:12px 24px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;line-height:1.5;transition:color .18s ease;
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{position:relative;flex:0 0 22px;width:22px;height:22px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .24s ease,opacity .24s ease;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ===== CTA 带 ===== */
.cta-band{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:clamp(40px,6vw,72px);overflow:hidden;
  background:var(--c-primary);border-radius:var(--r-lg);color:#fff;
}
.cta-band::before{
  content:"";position:absolute;left:-50px;top:-50px;width:200px;height:200px;
  border:1px solid rgba(127,200,192,.35);border-radius:50%;
}
.cta-band::after{
  content:"";position:absolute;right:30px;bottom:22px;width:64px;height:64px;
  border:1px solid rgba(127,200,192,.28);border-radius:14px;
}
.cta-text{position:relative;z-index:1;max-width:620px}
.cta-text h2{color:#fff;margin-bottom:12px}
.cta-text p{font-size:16px;line-height:1.8;color:rgba(255,255,255,.78)}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}

/* ===== 页脚 ===== */
.site-footer{margin-top:var(--sec-pad);padding-top:clamp(48px,6vw,72px);background:var(--c-primary-600);color:#fff}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:clamp(36px,4vw,56px)}
.footer-brand .logo-mark{background:rgba(255,255,255,.12)}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin-top:14px;max-width:310px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72)}
.footer-col h3{margin-bottom:16px;font-size:15px;font-weight:700;color:#fff}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ===== 响应式 1200 ===== */
@media (max-width:1200px){
  .main-nav ul{gap:22px}
  .header-left{gap:24px}
  .hero-inner{gap:40px}
}

/* ===== 响应式 992 ===== */
@media (max-width:992px){
  .main-nav{display:none}
  .nav-toggle{display:block}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/10}
  .hero-copy{min-height:0}
  .hero-float{left:12px;bottom:12px;max-width:60%;padding:12px 16px}
  .trust-list{grid-template-columns:repeat(2,1fr);gap:22px 0}
  .trust-list li{padding:0;border-left:0}
  .trust-list li:nth-child(odd){padding-right:18px}
  .steps{grid-template-columns:1fr;gap:16px}
  .steps::before{display:none}
  .proof-grid{grid-template-columns:1fr;grid-template-rows:auto}
  .proof-main{grid-row:auto}
  .news-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .footer-brand{grid-column:1 / -1}
}

/* ===== 响应式 768 ===== */
@media (max-width:768px){
  .container{padding:0 18px}
  .header-inner{height:60px}
  .hero{padding-top:34px}
  .hero-inner{padding-bottom:52px}
  .logo-text{font-size:16px}
  .news-card{gap:14px;padding:14px}
  .news-thumb{flex:0 0 120px;width:120px;height:88px}
  .news-body h3{font-size:16px}
  .proof-points{grid-template-columns:1fr 1fr}
  .faq-q{padding:12px 18px;font-size:16px}
  .faq-a p{padding:0 18px 18px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band::after{display:none}
}

/* ===== 响应式 560 ===== */
@media (max-width:560px){
  .search-wrap{display:none}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .cta-actions{width:100%}
  .trust-list{grid-template-columns:1fr}
  .proof-points{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}

/* ===== 响应式 380 ===== */
@media (max-width:380px){
  .logo-text{font-size:14px}
  .btn{min-height:44px;padding:0 18px;font-size:14px}
  .hero-float{max-width:80%}
}

/* roulang page: category1 */
:root{
  --brand:#0F4C48;
  --brand-06:rgba(15,76,72,.06);
  --brand-08:rgba(15,76,72,.08);
  --brand-12:rgba(15,76,72,.12);
  --brand-18:rgba(15,76,72,.18);
  --accent:#F0663F;
  --accent-dark:#d9552f;
  --mint:#7FC8C0;
  --bg:#FCFBF8;
  --bg-alt:#F2F5F3;
  --bg-soft:#F6F8F6;
  --card:#FFFFFF;
  --ink:#1E2A28;
  --muted:#5C6B68;
  --line:rgba(15,76,72,.10);
  --dark:#0B3733;
  --r-xs:4px;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(15,76,72,.06);
  --sh-md:0 8px 24px -12px rgba(15,76,72,.20);
  --sh-lg:0 24px 48px -24px rgba(15,76,72,.26);
  --container:1200px;
  --gutter:24px;
  --section:clamp(64px,8vw,112px);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand);}
button{font:inherit;color:inherit;}
input{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.01em;
}
h2{
  font-size:clamp(24px,2.8vw,34px);
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.005em;
}
h3{
  font-size:19px;
  line-height:1.5;
  font-weight:700;
}
p{line-height:1.85;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:var(--r-xs);}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
}
.section{padding:var(--section) 0;}
.section-alt{background:var(--bg-alt);}
.section-soft{background:var(--bg-soft);}
.section-head{max-width:820px;margin-bottom:clamp(32px,4vw,52px);}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--accent);
  font-weight:700;
  margin-bottom:14px;
  text-transform:uppercase;
}
.section-head h2{margin-bottom:16px;}
.section-head p{color:var(--muted);font-size:16px;}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(252,251,248,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--brand-08);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{
  box-shadow:var(--sh-md);
  background:rgba(252,251,248,.96);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--brand);
  font-weight:700;
}
.logo-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  flex:0 0 auto;
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{
  font-size:17px;
  letter-spacing:.01em;
  white-space:nowrap;
}
.main-nav ul{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--ink);
  transition:color var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-6px;
  width:20px;height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:translateX(-50%) scaleX(0);
  transition:transform var(--ease);
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{transform:translateX(-50%) scaleX(1);}
.main-nav a.active{color:var(--brand);font-weight:700;}
.main-nav a.active::after{transform:translateX(-50%) scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;
  height:40px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:#fff;
  padding:0 10px;
  transition:width var(--ease),border-color var(--ease),box-shadow var(--ease);
  width:40px;
  overflow:hidden;
}
.search-box.is-open{width:220px;padding-left:14px;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-12);}
.search-box input{
  border:0;outline:0;background:transparent;
  width:100%;height:100%;font-size:14px;color:var(--ink);
  opacity:0;transition:opacity 140ms ease;
}
.search-box.is-open input{opacity:1;}
.search-toggle{
  border:0;background:transparent;cursor:pointer;
  width:32px;height:32px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);border-radius:50%;
  transition:background var(--ease);
}
.search-toggle:hover{background:var(--brand-08);}
.search-toggle svg{width:18px;height:18px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#fff;
  cursor:pointer;
  align-items:center;justify-content:center;
  color:var(--brand);
}
.nav-toggle svg{width:20px;height:20px;}
.nav-toggle .icon-close{display:none;}
.nav-toggle.is-open .icon-close{display:block;}
.nav-toggle.is-open .icon-menu{display:none;}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn:disabled{opacity:.4;pointer-events:none;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:#0c403c;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-sm);}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:var(--brand-08);color:var(--brand);transform:translateY(-1px);}
.btn-ghost{
  height:auto;padding:0;border:0;background:transparent;color:var(--brand);
  font-weight:700;gap:6px;
}
.btn-ghost .arrow{transition:transform var(--ease);display:inline-block;}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-ghost:hover{background:transparent;box-shadow:none;transform:none;}
.btn-on-dark{border-color:rgba(255,255,255,.7);color:#fff;}
.btn-on-dark:hover{background:rgba(255,255,255,.14);color:#fff;}

/* ============ Banner ============ */
.page-banner{
  position:relative;
  min-height:300px;
  display:flex;
  align-items:flex-end;
  padding:clamp(56px,7vw,88px) 0 clamp(36px,4vw,52px);
  background-image:linear-gradient(120deg,rgba(11,55,51,.82),rgba(15,76,72,.68)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.page-banner::after{
  content:"";
  position:absolute;
  right:6%;
  top:24%;
  width:120px;height:120px;
  border:1px solid rgba(127,200,192,.45);
  border-radius:18px;
  transform:rotate(18deg);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:2;max-width:820px;}
.breadcrumb{margin-bottom:20px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;}
.breadcrumb li{color:rgba(255,255,255,.72);}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:rgba(255,255,255,.45);}
.breadcrumb a{color:rgba(255,255,255,.86);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.page-banner h1{color:#fff;margin-bottom:16px;}
.banner-sub{
  font-size:17px;
  color:rgba(255,255,255,.86);
  max-width:640px;
  line-height:1.75;
}

/* ============ Split intro (left image / right text) ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(28px,4vw,64px);
  align-items:center;
}
.split-media{position:relative;}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-lg);
}
.split-media .media-tag{
  position:absolute;
  left:20px;
  bottom:20px;
  background:#fff;
  color:var(--brand);
  border-radius:var(--r-md);
  padding:12px 18px;
  box-shadow:var(--sh-md);
  display:flex;
  align-items:center;
  gap:12px;
}
.media-tag .num{
  font-size:22px;
  font-weight:800;
  color:var(--accent);
  line-height:1;
}
.media-tag .lbl{font-size:13px;color:var(--muted);line-height:1.4;}
.split-body h2{margin-bottom:18px;}
.split-body p{color:var(--muted);margin-bottom:1.2em;}
.check-list{margin:26px 0 30px;display:grid;gap:14px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:16px;
  color:var(--ink);
}
.check-list .tick{
  flex:0 0 auto;
  width:22px;height:22px;
  margin-top:4px;
  border-radius:50%;
  background:var(--brand-08);
  color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
}
.check-list .tick svg{width:13px;height:13px;}
.split-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ============ Steps ============ */
.steps-wrap{position:relative;}
.steps-wrap::before{
  content:"";
  position:absolute;
  left:8%;
  right:8%;
  top:34px;
  border-top:1px dashed var(--brand-18);
}
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.step{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 24px 28px;
  box-shadow:var(--sh-sm);
  transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.step .num{
  font-size:40px;
  font-weight:800;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1.5px var(--brand);
  display:block;
  margin-bottom:20px;
}
.step h3{margin-bottom:10px;}
.step p{color:var(--muted);font-size:15px;}

/* ============ Stat row ============ */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:30px 0;
}
.stat{
  padding:0 24px;
  border-left:1px solid var(--line);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat .num{
  font-size:22px;
  font-weight:800;
  color:var(--brand);
  display:block;
  margin-bottom:6px;
}
.stat .lbl{font-size:13px;color:var(--muted);line-height:1.6;display:block;}

/* ============ Info cards ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.info-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 24px;
  box-shadow:var(--sh-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--brand-18);}
.info-card .icon{
  width:40px;height:40px;
  border-radius:10px;
  background:var(--brand-08);
  color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.info-card .icon svg{width:20px;height:20px;}
.info-card h3{margin-bottom:10px;}
.info-card p{color:var(--muted);font-size:15px;}
.info-card ul{margin-top:14px;display:grid;gap:8px;}
.info-card ul li{
  font-size:14px;
  color:var(--muted);
  padding-left:14px;
  position:relative;
  line-height:1.7;
}
.info-card ul li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:5px;height:5px;
  border-radius:50%;
  background:var(--mint);
}

/* ============ FAQ ============ */
.faq{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item.is-open{box-shadow:var(--sh-md);border-color:var(--brand-18);}
.faq-q{margin:0;font-size:17px;}
.faq-q button{
  width:100%;
  min-height:60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:14px 24px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  transition:color var(--ease);
}
.faq-q button:hover{color:var(--brand);}
.faq-q .mark{
  flex:0 0 auto;
  width:24px;height:24px;
  position:relative;
  color:var(--brand);
  transition:transform 240ms ease;
}
.faq-q .mark::before,
.faq-q .mark::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.faq-q .mark::before{left:4px;top:11px;width:16px;height:2px;}
.faq-q .mark::after{left:11px;top:4px;width:2px;height:16px;transition:opacity 240ms ease;}
.faq-item.is-open .faq-q .mark{transform:rotate(180deg);}
.faq-item.is-open .faq-q .mark::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 240ms ease;
}
.faq-a p{
  padding:0 24px 20px;
  font-size:15px;
  color:var(--muted);
  line-height:1.85;
}

/* ============ CTA band ============ */
.cta-band{
  position:relative;
  background:var(--brand);
  border-radius:var(--r-lg);
  padding:clamp(40px,6vw,72px);
  color:#fff;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:-30px;top:-30px;
  width:130px;height:130px;
  border:1px solid rgba(127,200,192,.5);
  border-radius:20px;
  transform:rotate(-12deg);
}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:16px;max-width:560px;}
.cta-band .cta-actions{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  flex:0 0 auto;
}

/* ============ Footer ============ */
.site-footer{
  background:var(--dark);
  color:#fff;
  padding:clamp(56px,6vw,80px) 0 28px;
  margin-top:clamp(64px,8vw,112px);
}
.site-footer .logo{color:#fff;}
.site-footer .logo-mark{background:rgba(255,255,255,.14);}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.66);
  max-width:340px;
}
.footer-col h3{
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
  color:#fff;
}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color var(--ease);
}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.6);
}

/* ============ Backdrop ============ */
.drawer-backdrop{
  position:fixed;
  inset:0;
  background:rgba(11,55,51,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity 240ms ease,visibility 240ms ease;
  z-index:90;
}
.drawer-backdrop.is-show{opacity:1;visibility:visible;}

/* ============ Responsive ============ */
@media (max-width:1200px){
  .main-nav ul{gap:20px;}
  .main-nav a{font-size:14px;}
}
@media (max-width:992px){
  .header-inner{min-height:60px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;
    top:0;right:0;
    width:84%;
    max-width:360px;
    height:100%;
    background:var(--bg);
    padding:88px 24px 32px;
    transform:translateX(101%);
    transition:transform 280ms ease;
    z-index:95;
    box-shadow:var(--sh-lg);
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:0;}
  .main-nav li{border-bottom:1px solid var(--line);}
  .main-nav a{
    display:flex;
    align-items:center;
    min-height:52px;
    font-size:16px;
    padding:0;
  }
  .main-nav a::after{display:none;}
  .main-nav a.active{color:var(--brand);}
  .search-box{display:none;}
  .split{grid-template-columns:1fr;}
  .split-media{order:-1;}
  .card-grid{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr 1fr;}
  .steps-wrap::before{display:none;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:768px){
  :root{--gutter:18px;}
  .page-banner{min-height:240px;}
  .page-banner::after{display:none;}
  .stat-row{grid-template-columns:1fr 1fr;gap:24px 0;padding:26px 0;}
  .stat{border-left:0;padding:0;}
  .stat:nth-child(even){padding-left:20px;border-left:1px solid var(--line);}
  .card-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .step{position:relative;padding-left:34px;}
  .step::before{
    content:"";
    position:absolute;
    left:14px;top:34px;bottom:-24px;
    border-left:1px dashed var(--brand-18);
  }
  .step:last-child::before{display:none;}
  .faq-q button{font-size:16px;padding:14px 18px;}
  .faq-a p{padding:0 18px 18px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .btn{flex:1 1 auto;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:560px){
  .split-media .media-tag{left:12px;bottom:12px;padding:10px 14px;}
  .header-actions .btn-sm{padding:0 14px;font-size:13px;}
  .logo-text{font-size:15px;}
}
@media (max-width:380px){
  .header-actions{gap:8px;}
  .header-actions .btn-sm{display:none;}
  .stat-row{gap:18px 0;}
}

/* roulang page: article */
:root{
  --brand:#0F4C48;
  --brand-700:#0B3733;
  --brand-300:#7FC8C0;
  --accent:#F0663F;
  --bg:#FCFBF8;
  --surface:#F2F5F3;
  --card:#FFFFFF;
  --ink:#1E2A28;
  --muted:#5C6B68;
  --line:rgba(15,76,72,.10);
  --line-strong:#D8E2DF;
  --danger:#C0392B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(15,76,72,.06);
  --sh-md:0 8px 24px -12px rgba(15,76,72,.20);
  --sh-lg:0 24px 48px -24px rgba(15,76,72,.26);
  --sect:clamp(64px,8vw,112px);
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::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(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-700);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);}
p{margin:0;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font-family:inherit;font-size:inherit;}
svg{display:block;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.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;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease, color 180ms ease, border-color 180ms ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-sm);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-sm);}
.btn-accent:hover{background:#d9552f;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-accent:active{transform:translateY(1px);}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:rgba(15,76,72,.08);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline-light{border-color:rgba(255,255,255,.7);color:#fff;background:transparent;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px);}
.btn-ghost{color:var(--brand);padding:8px 4px;font-weight:700;}
.btn-ghost .arrow{transition:transform 180ms ease;}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn[disabled],.btn.is-loading{opacity:.4;pointer-events:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:4px;
  background:rgba(15,76,72,.10);color:var(--brand);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);color:var(--muted);
  font-size:13px;transition:all 180ms ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:rgba(15,76,72,.05);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(252,251,248,.88);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 180ms ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-md);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px;}
.header-left{display:flex;align-items:center;gap:32px;min-width:0;}
.header-right{display:flex;align-items:center;gap:14px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;letter-spacing:-.01em;}
.logo:hover{color:var(--brand);}
.logo-mark{
  width:32px;height:32px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;flex:none;
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{font-size:17px;white-space:nowrap;}
.main-nav ul{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;display:inline-block;padding:22px 0;
  font-size:15px;color:var(--muted);font-weight:500;
  transition:color 180ms ease;
}
.main-nav a::after{
  content:"";position:absolute;left:50%;bottom:12px;width:0;height:2px;
  background:var(--brand);border-radius:2px;transform:translateX(-50%);
  transition:width 180ms ease;
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{width:20px;}
.main-nav a.active{color:var(--brand);font-weight:700;}
.main-nav a.active::after{width:20px;}
.nav-search{display:flex;align-items:center;gap:8px;}
.icon-btn{
  width:38px;height:38px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--muted);border:1px solid transparent;
  transition:all 180ms ease;
}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{color:var(--brand);background:rgba(15,76,72,.07);}
.icon-btn.is-on{color:#fff;background:var(--brand);}
.search-form{width:0;overflow:hidden;transition:width 220ms ease;}
.search-form.is-open{width:220px;}
.search-form input{
  width:220px;height:40px;padding:0 16px;
  border:1px solid var(--line-strong);border-radius:var(--r-pill);
  background:#fff;color:var(--ink);outline:none;
  transition:border-color 180ms ease, box-shadow 180ms ease;
}
.search-form input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,76,72,.12);}
.hamburger{
  display:none;width:40px;height:40px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.hamburger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform 200ms ease, opacity 200ms ease;}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,55,51,.42);
  opacity:0;visibility:hidden;transition:opacity 220ms ease, visibility 220ms ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;
  background:var(--bg);z-index:80;padding:22px 22px 28px;
  transform:translateX(100%);transition:transform 260ms ease;
  display:flex;flex-direction:column;gap:6px;box-shadow:var(--sh-lg);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-title{font-size:15px;font-weight:800;color:var(--brand);}
.mobile-drawer nav a{
  display:flex;align-items:center;min-height:52px;
  font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);
}
.mobile-drawer nav a.active{color:var(--brand);font-weight:700;}
.mobile-drawer .btn{margin-top:auto;width:100%;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;max-width:100%;}
.breadcrumb li+li::before{content:"/";color:rgba(15,76,72,.32);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb li[aria-current] span,
.breadcrumb li[aria-current]{color:var(--ink);font-weight:600;}
.breadcrumb .crumb-current{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:320px;}

/* ---------- 文章主体布局 ---------- */
.article-wrap{padding:32px 0 var(--sect);}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:start;}
.article-main{min-width:0;}
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--sh-sm);
}
.aside-card h2{font-size:15px;font-weight:800;letter-spacing:.02em;color:var(--brand);margin-bottom:14px;}
.toc-list li+li{margin-top:2px;}
.toc-list a{
  display:block;padding:8px 10px;border-left:2px solid var(--line);
  font-size:14px;color:var(--muted);line-height:1.6;transition:all 180ms ease;
}
.toc-list a:hover,.toc-list a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(15,76,72,.05);}
.aside-links li+li{margin-top:12px;border-top:1px dashed var(--line);padding-top:12px;}
.aside-links a{display:block;font-size:14px;color:var(--ink);font-weight:600;line-height:1.6;}
.aside-links a:hover{color:var(--brand);}
.aside-links span{display:block;margin-top:4px;font-size:13px;color:var(--muted);line-height:1.6;font-weight:400;}

/* ---------- 文章头部 ---------- */
.article-head{padding-bottom:30px;border-bottom:1px solid var(--line);}
.article-head .badge{margin-bottom:18px;}
.article-head h1{
  font-size:clamp(28px,3.6vw,42px);line-height:1.3;letter-spacing:-.01em;font-weight:800;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:20px;font-size:14px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(15,76,72,.28);}

/* ---------- 正文排版 ---------- */
.prose{padding-top:34px;font-size:16.5px;line-height:1.85;color:var(--ink);max-width:820px;}
.prose>*+*{margin-top:1.2em;}
.prose p{margin:0;}
.prose h2{
  font-size:clamp(21px,2.2vw,27px);line-height:1.4;font-weight:700;
  margin-top:2.1em;margin-bottom:.35em;padding-left:14px;border-left:4px solid var(--brand-300);
}
.prose h3{font-size:19px;line-height:1.5;font-weight:700;margin-top:1.7em;margin-bottom:.3em;}
.prose ul,.prose ol{padding-left:1.35em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-top:.5em;}
.prose li::marker{color:var(--brand-300);}
.prose blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--surface);
  border-left:4px solid var(--brand);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--muted);
}
.prose blockquote p{margin:0;}
.prose img{max-width:100%;height:auto;border-radius:var(--r-md);margin:1.6em auto;box-shadow:var(--sh-sm);}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.prose strong{font-weight:700;}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.prose code{background:var(--surface);padding:2px 6px;border-radius:6px;font-size:.92em;}
.prose table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;display:block;overflow-x:auto;}
.prose th,.prose td{border:1px solid var(--line-strong);padding:10px 14px;text-align:left;line-height:1.7;}
.prose th{background:var(--surface);font-weight:700;white-space:nowrap;}

/* ---------- 文章尾部 ---------- */
.article-foot{
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
}
.tag-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-list-label{font-size:13px;color:var(--muted);font-weight:700;}
.article-actions{display:flex;align-items:center;gap:10px;}
.article-actions .icon-btn{border:1px solid var(--line-strong);}
.article-actions .icon-btn:hover{border-color:var(--brand);background:rgba(15,76,72,.06);}
.back-category{
  margin-top:28px;display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--brand);
}
.back-category .arrow{transition:transform 180ms ease;}
.back-category:hover .arrow{transform:translateX(-4px);}

/* ---------- 空态 ---------- */
.empty-state{
  margin-top:34px;padding:44px 28px;text-align:center;
  border:1px dashed rgba(15,76,72,.18);border-radius:var(--r-md);background:#F6F8F6;
}
.empty-state .empty-icon{
  width:48px;height:48px;margin:0 auto 16px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(15,76,72,.08);color:var(--brand);
}
.empty-state .empty-icon svg{width:24px;height:24px;}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;max-width:520px;margin:0 auto 22px;}

/* ---------- 相关推荐 ---------- */
.related{padding-top:clamp(48px,6vw,72px);}
.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,2.4vw,28px);line-height:1.35;}
.section-head p{margin-top:8px;font-size:15px;color:var(--muted);}
.related-list{display:grid;gap:18px;}
.related-card{
  display:grid;grid-template-columns:180px minmax(0,1fr);gap:22px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px;box-shadow:var(--sh-sm);
  transition:transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(15,76,72,.18);}
.related-thumb{width:100%;aspect-ratio:16/11;border-radius:10px;overflow:hidden;background:var(--surface);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease;}
.related-card:hover .related-thumb img{transform:scale(1.03);}
.related-body h3{font-size:18px;line-height:1.5;margin:10px 0 8px;}
.related-card:hover .related-body h3{color:var(--brand);}
.related-body p{font-size:14.5px;color:var(--muted);line-height:1.75;}
.related-more{margin-top:12px;font-size:13.5px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}

/* ---------- CTA 带 ---------- */
.cta-section{padding:var(--sect) 0 0;}
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand);border-radius:var(--r-lg);
  padding:clamp(40px,6vw,72px);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;
}
.cta-deco{
  position:absolute;left:0;top:0;width:132px;height:96px;pointer-events:none;
  border-right:1px solid rgba(127,200,192,.55);border-bottom:1px solid rgba(127,200,192,.55);
  border-bottom-right-radius:22px;
}
.cta-copy{position:relative;max-width:620px;}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.6vw,32px);line-height:1.4;}
.cta-copy p{margin-top:14px;color:rgba(255,255,255,.82);font-size:15.5px;}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sect);background:var(--brand-700);color:#fff;
  padding:clamp(48px,6vw,72px) 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .logo{color:#fff;}
.footer-brand .logo:hover{color:#fff;opacity:.9;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:320px;}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col li+li{margin-top:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color 180ms ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 提示条 ---------- */
.toast{
  position:fixed;left:50%;bottom:34px;transform:translate(-50%,16px);
  background:var(--brand-700);color:#fff;font-size:14px;
  padding:12px 22px;border-radius:var(--r-pill);box-shadow:var(--sh-lg);
  opacity:0;visibility:hidden;transition:all 220ms ease;z-index:120;
}
.toast.is-show{opacity:1;visibility:visible;transform:translate(-50%,0);}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-aside{display:none;}
  .main-nav ul{gap:22px;}
}
@media (max-width:992px){
  .main-nav{display:none;}
  .hamburger{display:inline-flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
  .article-head h1{font-size:clamp(25px,5vw,34px);}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .logo-text{font-size:15.5px;}
  .search-form{display:none;}
  .related-card{grid-template-columns:130px minmax(0,1fr);gap:16px;padding:14px;}
  .related-body h3{font-size:16.5px;}
  .cta-band{flex-direction:column;align-items:flex-start;text-align:left;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:560px){
  .header-right .btn-sm{display:none;}
  .related-card{grid-template-columns:104px minmax(0,1fr);gap:14px;}
  .related-body p{display:none;}
  .cta-actions .btn{width:100%;}
  .breadcrumb .crumb-current{max-width:180px;}
}
@media (max-width:380px){
  .container{padding:0 14px;}
  .logo-text{font-size:14px;}
  .related-card{grid-template-columns:1fr;}
  .related-thumb{aspect-ratio:16/9;}
}

/* roulang page: category2 */
:root{
  --brand:#0F4C48;
  --brand-deep:#0B3733;
  --brand-soft:rgba(15,76,72,.08);
  --accent:#F0663F;
  --accent-deep:#D4532E;
  --mint:#7FC8C0;
  --bg:#FCFBF8;
  --surface:#FFFFFF;
  --surface-2:#F2F5F3;
  --ink:#1E2A28;
  --ink-2:#5C6B68;
  --line:rgba(15,76,72,.10);
  --line-strong:#D8E2DF;
  --r-xs:6px;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(15,76,72,.06);
  --sh-md:0 8px 24px -12px rgba(15,76,72,.20);
  --sh-lg:0 24px 48px -24px rgba(15,76,72,.26);
  --wrap:1200px;
  --header-h:68px;
  --ease:180ms ease;
}
*,*::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:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),opacity var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-0.01em;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 1.2em;padding-left:1.3em;}
li{margin-bottom:.5em;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input{font:inherit;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.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;}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(252,251,248,.88);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background-color var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-md);background:rgba(252,251,248,.96);}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h);}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand);flex:0 0 auto;}
.logo:hover{color:var(--brand);}
.logo-mark{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;background:var(--brand);color:#fff;border-radius:10px;flex:0 0 auto;}
.logo-mark svg{width:20px;height:20px;display:block;}
.logo-text{font-size:16px;font-weight:800;letter-spacing:.01em;white-space:nowrap;}
.main-nav{margin-right:auto;}
.main-nav ul{display:flex;align-items:center;gap:28px;list-style:none;margin:0;padding:0;}
.main-nav li{margin:0;}
.main-nav a{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink-2);white-space:nowrap;}
.main-nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);border-radius:2px;transition:width var(--ease);}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{width:20px;}
.main-nav a.active{color:var(--brand);font-weight:700;}
.main-nav a.active::after{width:20px;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r-pill);color:var(--brand);border:1px solid var(--line-strong);background:var(--surface);transition:all var(--ease);}
.icon-btn svg{width:17px;height:17px;}
.icon-btn:hover{background:var(--brand-soft);border-color:var(--mint);transform:translateY(-1px);}
.nav-search{width:0;overflow:hidden;transition:width 220ms ease;}
.nav-search input{width:100%;height:38px;border:1px solid var(--line-strong);border-radius:var(--r-pill);padding:0 16px;font-size:14px;background:var(--surface);color:var(--ink);}
.nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,76,72,.12);}
.site-header.search-open .nav-search{width:220px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:var(--r-pill);font-size:15px;font-weight:700;line-height:1;border:1.5px solid transparent;transition:all var(--ease);cursor:pointer;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-sm);}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);}
.btn-ghost{padding:8px 0;color:var(--brand);font-weight:700;border:0;}
.btn-ghost .arrow{display:inline-block;transition:transform var(--ease);}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-white-outline{border-color:rgba(255,255,255,.7);color:#fff;background:transparent;}
.btn-white-outline:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px);}
.btn:active{transform:translateY(1px);}
.btn[disabled]{opacity:.4;pointer-events:none;}
.btn-sm{padding:10px 18px;font-size:14px;}
.menu-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:var(--r-sm);border:1px solid var(--line-strong);background:var(--surface);}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(11,55,51,.42);z-index:70;opacity:0;pointer-events:none;transition:opacity var(--ease);}
.drawer-mask.show{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;z-index:80;
  background:var(--bg);box-shadow:var(--sh-lg);
  transform:translateX(100%);transition:transform 240ms ease;
  display:flex;flex-direction:column;padding:20px 22px 26px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{font-size:14px;font-weight:700;color:var(--ink-2);letter-spacing:.06em;}
.drawer-close{width:36px;height:36px;border-radius:var(--r-pill);border:1px solid var(--line-strong);display:inline-flex;align-items:center;justify-content:center;color:var(--brand);}
.drawer-close svg{width:16px;height:16px;}
.drawer-nav{list-style:none;margin:0;padding:0;flex:1;}
.drawer-nav li{margin:0 0 4px;}
.drawer-nav a{display:flex;align-items:center;min-height:52px;padding:0 14px;border-radius:var(--r-sm);font-size:16px;font-weight:500;color:var(--ink);}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:700;}
.drawer-foot{margin-top:18px;border-top:1px solid var(--line);padding-top:18px;}
.drawer-foot .btn{width:100%;}

/* ---------- 页面 Banner ---------- */
.page-banner{position:relative;margin-top:var(--header-h);min-height:clamp(240px,30vw,320px);display:flex;align-items:flex-end;overflow:hidden;color:#fff;}
.banner-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;transform:scale(1.02);}
.banner-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(11,55,51,.90) 0%,rgba(15,76,72,.70) 58%,rgba(15,76,72,.52) 100%);}
.banner-inner{position:relative;z-index:2;padding-top:clamp(56px,8vw,90px);padding-bottom:clamp(34px,5vw,52px);}
.breadcrumb{margin-bottom:20px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;font-size:13.5px;color:rgba(255,255,255,.72);}
.breadcrumb li{margin:0;display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.45);}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb [aria-current="page"]{color:#fff;font-weight:600;}
.banner-tag{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.10em;color:#0B3733;background:var(--mint);border-radius:var(--r-xs);padding:5px 12px;margin-bottom:16px;}
.page-banner h1{color:#fff;font-size:clamp(30px,4.2vw,50px);line-height:1.25;letter-spacing:-0.01em;font-weight:800;max-width:900px;}
.banner-sub{margin:16px 0 0;max-width:720px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.86);}

/* ---------- 锚点标签条 ---------- */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:50;
  background:rgba(252,251,248,.94);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;align-items:center;gap:10px;height:56px;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  flex:0 0 auto;display:inline-block;padding:8px 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--ink-2);background:var(--surface-2);border:1px solid transparent;
}
.anchor-inner a:hover{color:var(--brand);background:var(--brand-soft);border-color:rgba(15,76,72,.16);transform:translateY(-1px);}

/* ---------- 通用板块 ---------- */
.section{padding:clamp(56px,7vw,96px) 0;}
.section.alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:820px;margin-bottom:clamp(32px,4vw,52px);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--accent);margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.section-head h2{font-size:clamp(24px,2.8vw,34px);line-height:1.35;}
.section-head p{margin-top:14px;font-size:16.5px;color:var(--ink-2);max-width:760px;}
.reading{max-width:820px;}
.reading h2{font-size:clamp(24px,2.8vw,32px);line-height:1.35;margin-bottom:20px;}
.reading h3{font-size:19px;line-height:1.5;margin:34px 0 12px;}
.reading p{font-size:17px;line-height:1.85;}
.reading ul,.reading ol{font-size:17px;line-height:1.85;color:var(--ink);}
.reading li strong{color:var(--brand);}
.figure{margin:32px 0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--surface);box-shadow:var(--sh-sm);}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure figcaption{padding:12px 18px;font-size:13.5px;color:var(--ink-2);background:var(--surface);border-top:1px solid var(--line);}
.pullquote{
  margin:32px 0;padding:22px 26px;border-left:3px solid var(--mint);
  background:var(--surface);border-radius:0 var(--r-md) var(--r-md) 0;box-shadow:var(--sh-sm);
  font-size:16.5px;color:var(--ink-2);line-height:1.85;
}
.section-anchor{scroll-margin-top:calc(var(--header-h) + 72px);}

/* ---------- 参数卡组（错落） ---------- */
.param-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px;}
.param-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 26px 30px;box-shadow:var(--sh-sm);transition:all var(--ease);
  display:flex;flex-direction:column;
}
.param-card:nth-child(2){transform:translateY(26px);}
.param-card:nth-child(3){transform:translateY(52px);}
.param-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(15,76,72,.20);}
.param-card:nth-child(2):hover{transform:translateY(24px);}
.param-card:nth-child(3):hover{transform:translateY(50px);}
.param-label{font-size:12.5px;font-weight:700;letter-spacing:.10em;color:var(--accent);margin-bottom:12px;}
.param-card h3{font-size:20px;line-height:1.45;margin-bottom:12px;}
.param-card p{font-size:15px;line-height:1.8;color:var(--ink-2);margin:0 0 18px;}
.param-num{font-size:34px;font-weight:800;color:var(--brand);line-height:1.1;letter-spacing:-0.02em;margin-bottom:6px;}
.param-num small{font-size:15px;font-weight:700;color:var(--ink-2);margin-left:4px;letter-spacing:0;}
.param-list{list-style:none;margin:auto 0 0;padding:16px 0 0;border-top:1px solid var(--line);font-size:14px;color:var(--ink-2);}
.param-list li{display:flex;gap:10px;margin:0 0 8px;line-height:1.7;}
.param-list li:last-child{margin-bottom:0;}
.param-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--mint);}
.param-spacer{height:52px;}

/* ---------- 现象对照 ---------- */
.issue-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:8px;}
.issue-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:24px;transition:all var(--ease);}
.issue-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(15,76,72,.18);}
.issue-card h3{font-size:17.5px;line-height:1.5;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start;}
.issue-card h3::before{content:"";flex:0 0 auto;width:8px;height:8px;margin-top:10px;border-radius:2px;background:var(--accent);}
.issue-card p{font-size:15px;line-height:1.8;color:var(--ink-2);margin:0;}

/* ---------- 检查清单 ---------- */
.check-list{list-style:none;counter-reset:step;margin:0;padding:0;max-width:820px;}
.check-list li{
  counter-increment:step;position:relative;
  padding:20px 24px 20px 74px;margin:0 0 12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  font-size:16px;line-height:1.8;transition:all var(--ease);
}
.check-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:24px;top:19px;
  font-size:18px;font-weight:800;color:var(--brand);
  border:1.5px solid rgba(15,76,72,.28);border-radius:var(--r-sm);
  width:34px;height:34px;display:flex;align-items:center;justify-content:center;
  line-height:1;
}
.check-list li:hover{border-color:rgba(15,76,72,.20);box-shadow:var(--sh-sm);transform:translateY(-1px);}
.check-list li strong{display:block;font-size:16.5px;margin-bottom:2px;color:var(--ink);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:box-shadow var(--ease),border-color var(--ease);}
.faq-item:hover{border-color:rgba(15,76,72,.18);box-shadow:var(--sh-sm);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  width:100%;min-height:60px;padding:16px 24px;text-align:left;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.55;
}
.faq-q .faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;color:var(--brand);transition:transform 240ms ease;}
.faq-q .faq-icon::before,.faq-q .faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%);}
.faq-q .faq-icon::before{width:14px;height:2px;}
.faq-q .faq-icon::after{width:2px;height:14px;transition:opacity var(--ease);}
.faq-item.open .faq-q .faq-icon{transform:rotate(180deg);}
.faq-item.open .faq-q .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease;}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);}
.faq-a-inner p{margin:0;}
.faq-item.open .faq-q{color:var(--brand);}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--brand);color:#fff;
  border-radius:var(--r-lg);padding:clamp(40px,6vw,72px);
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-lg);
}
.cta-deco{position:absolute;left:clamp(20px,4vw,44px);top:clamp(18px,3vw,32px);width:74px;height:74px;pointer-events:none;opacity:.85;}
.cta-deco::before{content:"";position:absolute;left:0;top:0;width:74px;height:1.5px;background:var(--mint);}
.cta-deco::after{content:"";position:absolute;left:0;top:0;width:1.5px;height:74px;background:var(--mint);}
.cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-copy h2{color:#fff;font-size:clamp(23px,2.6vw,32px);line-height:1.35;margin-bottom:12px;}
.cta-copy p{margin:0;font-size:16px;line-height:1.8;color:rgba(255,255,255,.84);}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex:0 0 auto;}
.cta-section{padding:clamp(48px,6vw,80px) 0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:#fff;padding:clamp(48px,6vw,72px) 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand .logo-mark{background:rgba(255,255,255,.12);color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin:0;max-width:320px;}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin:0 0 10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);line-height:1.7;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.62);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .main-nav ul{gap:20px;}
  .main-nav a{font-size:14.5px;}
}
@media (max-width:992px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-search{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{gap:12px;}
  .logo{margin-right:auto;}
  .param-grid{grid-template-columns:1fr;}
  .param-card:nth-child(2),.param-card:nth-child(3){transform:none;}
  .param-card:nth-child(2):hover,.param-card:nth-child(3):hover{transform:translateY(-2px);}
  .param-spacer{height:0;}
  .cta-band{flex-direction:column;align-items:flex-start;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .anchor-inner{height:52px;}
  .issue-grid{grid-template-columns:1fr;}
  .reading p,.reading ul,.reading ol{font-size:16px;}
  .check-list li{padding:18px 18px 18px 64px;}
  .check-list li::before{left:18px;top:17px;}
  .faq-q{font-size:16px;padding:14px 18px;min-height:56px;}
  .faq-a-inner{padding:0 18px 20px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .page-banner{margin-top:60px;}
  .site-header .header-inner{height:60px;}
  :root{--header-h:60px;}
  .anchor-bar{top:60px;}
}
@media (max-width:560px){
  .logo-text{font-size:15px;}
  .logo-mark{width:30px;height:30px;border-radius:8px;}
  .banner-inner{padding-top:44px;}
  .footer-grid{grid-template-columns:1fr;}
  .param-card{padding:22px 20px 24px;}
  .param-num{font-size:29px;}
}
@media (max-width:380px){
  .logo-text{font-size:14px;letter-spacing:0;}
  .btn{padding:12px 20px;font-size:14.5px;}
  .check-list li{padding-left:18px;padding-top:56px;}
  .check-list li::before{top:16px;}
}

/* roulang page: category3 */
:root{
  --brand:#0F4C48;
  --brand-600:#0B3733;
  --brand-050:rgba(15,76,72,.06);
  --brand-100:rgba(15,76,72,.10);
  --accent:#F0663F;
  --accent-soft:rgba(240,102,63,.12);
  --mint:#7FC8C0;
  --bg:#FCFBF8;
  --bg-alt:#F2F5F3;
  --card:#FFFFFF;
  --ink:#1E2A28;
  --ink-2:#5C6B68;
  --ink-3:#8A9995;
  --line:rgba(15,76,72,.10);
  --line-strong:#D8E2DF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(15,76,72,.06);
  --sh-md:0 8px 24px -12px rgba(15,76,72,.20);
  --sh-lg:0 24px 48px -24px rgba(15,76,72,.26);
  --nav-h:68px;
  --container:1200px;
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);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;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(252,251,248,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--brand-100);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-md);}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:var(--nav-h);
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand);text-decoration:none;flex:0 0 auto;}
.logo:hover{color:var(--brand);}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--brand);color:#fff;flex:0 0 auto;
}
.logo-mark svg{width:19px;height:19px;}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{flex:1 1 auto;}
.main-nav ul{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;display:inline-block;
  padding:22px 0;font-size:15px;color:var(--ink-2);
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:14px;
  width:0;height:2px;background:var(--brand);
  transition:width var(--ease);
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{width:20px;}
.main-nav a.active{color:var(--brand);font-weight:600;}
.main-nav a.active::after{width:20px;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box input{
  width:0;padding:0;height:40px;border:1px solid transparent;border-radius:var(--r-pill);
  background:var(--card);color:var(--ink);font-size:14px;opacity:0;
  transition:width var(--ease),opacity var(--ease),padding var(--ease),border-color var(--ease);
}
.search-box.is-open input{width:220px;padding:0 16px;opacity:1;border-color:var(--line-strong);}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,76,72,.12);}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:transparent;color:var(--brand);cursor:pointer;
  transition:background-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.icon-btn:hover{background:var(--brand-050);transform:translateY(-1px);box-shadow:var(--sh-sm);}
.icon-btn:active{transform:translateY(1px);}
.icon-btn svg{width:18px;height:18px;}
.nav-toggle{display:none;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1.5px solid transparent;
  padding:12px 24px;font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;text-decoration:none;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;pointer-events:none;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--sh-sm);}
.btn-accent:hover{background:#d9542f;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:var(--brand-050);color:var(--brand);transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-ghost{padding:6px 4px;background:none;border:none;color:var(--brand);font-weight:600;}
.btn-ghost:hover{color:var(--accent);}
.btn-ghost svg{width:16px;height:16px;transition:transform var(--ease);}
.btn-ghost:hover svg{transform:translateX(4px);}
.btn-on-dark{border-color:rgba(255,255,255,.7);color:#fff;background:transparent;}
.btn-on-dark:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,55,51,.42);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;z-index:90;
  background:var(--bg);box-shadow:var(--sh-lg);
  transform:translateX(102%);transition:transform 220ms ease;
  display:flex;flex-direction:column;padding:20px 20px 24px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-nav{margin-top:8px;flex:1 1 auto;overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;height:52px;font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand);font-weight:700;}
.drawer-foot{padding-top:16px;}
.drawer-foot .btn{width:100%;}

/* ============ 分类页 Banner ============ */
.page-banner{
  position:relative;overflow:hidden;
  min-height:300px;
  display:flex;align-items:center;
  background:var(--brand-600);
}
.page-banner__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
}
.page-banner__mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,76,72,.90) 0%,rgba(15,76,72,.72) 55%,rgba(11,55,51,.60) 100%);
}
.page-banner__inner{position:relative;z-index:2;padding:56px 0 60px;color:#fff;}
.crumbs{margin-bottom:18px;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;}
.crumbs li{color:rgba(255,255,255,.72);}
.crumbs li+li::before{content:"/";margin-right:8px;color:rgba(255,255,255,.45);}
.crumbs a{color:rgba(255,255,255,.86);}
.crumbs a:hover{color:#fff;text-decoration:underline;}
.page-banner h1{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.25;letter-spacing:-.01em;font-weight:800;
  margin-bottom:18px;
}
.page-banner p{
  max-width:720px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.86);
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.banner-tags span{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.10);
  font-size:13px;color:#fff;
}
.banner-tags span i{width:6px;height:6px;border-radius:50%;background:var(--mint);display:inline-block;}

/* ============ 通用板块 ============ */
.section{padding:clamp(64px,8vw,112px) 0;}
.section--alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
h2{
  font-size:clamp(24px,2.8vw,34px);
  line-height:1.35;font-weight:800;letter-spacing:-.01em;
  margin-bottom:16px;
}
.section-head p{color:var(--ink-2);font-size:16px;line-height:1.85;}

/* ============ 卡片组 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(15,76,72,.20);}
.card__top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.card__num{
  font-size:28px;font-weight:800;color:transparent;
  -webkit-text-stroke:1.2px var(--brand);
  letter-spacing:-.02em;
}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:6px;
  font-size:12px;font-weight:600;
  background:var(--brand-050);color:var(--brand);
}
.badge--accent{background:var(--accent-soft);color:#C04125;}
.card h3{font-size:19px;line-height:1.5;font-weight:700;margin-bottom:10px;}
.card p{font-size:15px;color:var(--ink-2);line-height:1.85;}
.card__list{margin-top:18px;padding-top:18px;border-top:1px dashed var(--line-strong);}
.card__list li{
  position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);line-height:1.8;
}
.card__list li+li{margin-top:8px;}
.card__list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:6px;height:6px;border-radius:2px;background:var(--mint);
}

/* 图文卡 */
.feature{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;}
.feature__media{
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-lg);
  border:1px solid var(--line);aspect-ratio:16/11;background:var(--bg-alt);
}
.feature__media img{width:100%;height:100%;object-fit:cover;}
.feature h2{margin-bottom:18px;}
.feature p{color:var(--ink-2);}
.check-list{margin-top:26px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);
}
.check-list li:last-child{border-bottom:none;}
.check-list svg{width:20px;height:20px;flex:0 0 auto;margin-top:5px;color:var(--brand);}
.check-list strong{display:block;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;}
.check-list span{font-size:14px;color:var(--ink-2);}

/* 数据条 */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);overflow:hidden;
}
.metrics li{
  padding:28px 24px;text-align:center;
  border-right:1px solid var(--line);
}
.metrics li:last-child{border-right:none;}
.metrics b{display:block;font-size:24px;font-weight:800;color:var(--brand);letter-spacing:-.01em;margin-bottom:6px;}
.metrics span{font-size:13px;color:var(--ink-2);}

/* ============ 对比表 ============ */
.table-scroll{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-sm);
}
table{width:100%;border-collapse:collapse;min-width:760px;}
caption{text-align:left;padding:22px 26px 6px;font-size:14px;color:var(--ink-3);}
th,td{
  padding:18px 26px;text-align:left;font-size:15px;line-height:1.7;
  border-bottom:1px solid var(--line);vertical-align:top;
}
thead th{
  background:var(--brand-050);color:var(--brand);
  font-size:14px;font-weight:700;white-space:nowrap;
  border-bottom:1px solid rgba(15,76,72,.16);
}
tbody th{font-weight:600;color:var(--ink);white-space:nowrap;background:transparent;}
tbody td{color:var(--ink-2);}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:none;}
tbody tr:hover td,tbody tr:hover th{background:rgba(127,200,192,.08);}
.table-hint{font-size:13px;color:var(--ink-3);margin-top:12px;}

/* ============ FAQ ============ */
.faq{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-sm);overflow:hidden;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item+.faq-item{margin-top:12px;}
.faq-item.is-open{border-color:rgba(15,76,72,.22);box-shadow:var(--sh-md);}
.faq-item h3{margin:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:16px 24px;background:none;border:none;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);text-align:left;line-height:1.5;
  transition:color var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-q .faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1.5px solid var(--brand);color:var(--brand);
  transition:transform var(--ease),background-color var(--ease);
}
.faq-q .faq-icon::before,.faq-q .faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .faq-icon::before{width:10px;height:1.6px;}
.faq-q .faq-icon::after{width:1.6px;height:10px;transition:opacity var(--ease);}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand);color:#fff;}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 240ms ease;
}
.faq-a__inner{
  padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-2);
}
.faq-a__inner p+p{margin-top:12px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand);border-radius:var(--r-lg);
  padding:clamp(40px,6vw,72px);
  color:#fff;box-shadow:var(--sh-lg);
}
.cta-band__deco{
  position:absolute;left:24px;top:24px;width:88px;height:88px;
  border-top:1.5px solid var(--mint);border-left:1.5px solid var(--mint);
  opacity:.55;border-radius:6px 0 0 0;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-inner h2{color:#fff;margin-bottom:12px;}
.cta-inner p{color:rgba(255,255,255,.82);max-width:560px;font-size:16px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-600);color:#fff;
  padding:clamp(56px,7vw,88px) 0 0;
  margin-top:clamp(64px,8vw,112px);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px 32px;
  padding-bottom:48px;
}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.14);color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:340px;}
.footer-col h3{
  font-size:15px;font-weight:700;margin-bottom:18px;color:#fff;
}
.footer-col li+li{margin-top:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;font-size:13px;color:rgba(255,255,255,.62);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .container{padding:0 22px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px 24px;}
}
@media (max-width:992px){
  :root{--nav-h:64px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .search-box.is-open input{width:170px;}
  .card-grid{grid-template-columns:1fr 1fr;}
  .feature{grid-template-columns:1fr;gap:32px;}
  .feature__media{order:-1;aspect-ratio:16/10;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .metrics{grid-template-columns:1fr 1fr;}
  .metrics li:nth-child(2){border-right:none;}
  .metrics li:nth-child(1),.metrics li:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .page-banner{min-height:260px;}
  .page-banner__inner{padding:44px 0 48px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .card-grid{grid-template-columns:1fr;}
  .card{padding:22px;}
  .faq-q{font-size:16px;padding:14px 18px;}
  .faq-a__inner{padding:0 18px 18px;}
  .cta-band{padding:36px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;justify-content:center;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 20px;}
  .footer-brand{grid-column:1/-1;}
  .footer-brand p{max-width:none;}
}
@media (max-width:560px){
  .logo-text{font-size:15px;}
  .header-actions .btn-primary{display:none;}
  .search-box.is-open input{width:140px;}
  .metrics{grid-template-columns:1fr;}
  .metrics li{border-right:none;border-bottom:1px solid var(--line);}
  .metrics li:last-child{border-bottom:none;}
  table{min-width:640px;}
  th,td{padding:14px 18px;}
  thead th{font-size:13px;}
}
@media (max-width:380px){
  .logo-text{font-size:14px;}
  .banner-tags span{font-size:12px;padding:6px 11px;}
}