/* roulang page: index */
:root{
  --ink:#10332E;
  --ink-deep:#0A211E;
  --accent:#C25B2E;
  --accent-deep:#A84A22;
  --jade:#2E7D6B;
  --paper:#F6F4EF;
  --paper-2:#EFECE4;
  --card:#FFFFFF;
  --line:#E2DED4;
  --text:#1B1E1C;
  --muted:#6B7069;
  --disabled:#C9C6BE;
  --disabled-text:#8A8880;
  --r-card:10px;
  --r-img:12px;
  --r-tag:4px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,51,46,.06);
  --sh-2:0 12px 28px rgba(16,51,46,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --num:"Inter","Manrope",var(--sans);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
h1,h2,h3,h4,p,ul,ol,figure,fieldset{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:700;letter-spacing:-.015em;color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(194,91,46,.2)}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:110px 0;position:relative}
.section--alt{background:var(--paper-2)}
.section[id]{scroll-margin-top:96px}
.section-head{max-width:760px;margin-bottom:56px}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none}
.section-head h2{font-size:42px;line-height:1.2;margin-bottom:16px}
.section-lead{font-size:17px;color:var(--muted);max-width:560px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.08em;color:var(--jade);
  font-weight:500;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--jade);display:block}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:500;line-height:1.4;
  padding:12px 24px;cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn .arrow{display:inline-block;transition:transform .2s ease}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-primary:active{transform:scale(.98)}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#F6F4EF;transform:translateY(-2px)}
.btn-outline:hover .arrow{transform:translateX(4px)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--ink);padding-left:10px;padding-right:10px}
.btn-ghost:hover{color:var(--accent)}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-sm{padding:9px 18px;font-size:14px}
.btn[disabled]{background:var(--disabled);color:var(--disabled-text);border-color:var(--disabled);cursor:not-allowed;transform:none;box-shadow:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--ink);font-weight:500;position:relative}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--accent);transition:width .2s ease}
.link-more:hover{color:var(--accent)}
.link-more:hover::after{width:100%}
.link-more .arrow{transition:transform .2s ease}
.link-more:hover .arrow{transform:translateX(4px)}

.tag{
  display:inline-block;font-size:12px;letter-spacing:.06em;
  padding:4px 10px;border-radius:var(--r-tag);
  background:rgba(16,51,46,.06);color:var(--ink);
}
.tag--jade{background:rgba(46,125,107,.12);color:#24695A}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 14px rgba(16,51,46,.07)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:8px;flex-shrink:0;
  background:var(--ink);color:var(--paper);
  display:grid;place-items:center;
  font-family:var(--serif);font-size:18px;font-weight:700;line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-family:var(--serif);font-size:18px;color:var(--ink);letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.14em}
.nav-links{display:flex;align-items:center;gap:26px;margin:0 auto}
.nav-link{position:relative;font-size:15px;color:var(--ink);padding:6px 0}
.nav-link::after{content:"";position:absolute;left:0;bottom:2px;width:0;height:1px;background:var(--accent);transition:width .2s ease}
.nav-link:hover::after{width:100%}
.nav-link:hover{color:var(--accent)}
.nav-link.is-active{font-weight:500;color:var(--ink)}
.nav-link.is-active::before{
  content:"";position:absolute;left:-13px;top:50%;width:6px;height:6px;
  border-radius:50%;background:var(--accent);transform:translateY(-50%);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  border-radius:10px;background:var(--card);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .2s ease;
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--ink);transition:transform .25s ease,opacity .25s ease}

/* ============ Hero ============ */
.hero{padding:92px 0 0;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center}
.hero-copy{max-width:640px}
.hero-title{font-size:60px;line-height:1.12;letter-spacing:-.02em;margin-bottom:24px;color:var(--ink)}
.hero-sub{font-size:18px;line-height:1.85;color:var(--muted);max-width:520px;margin-bottom:36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badges li{
  font-size:13px;color:var(--muted);
  border:1px solid var(--line);border-radius:var(--r-pill);
  padding:7px 14px;background:rgba(255,255,255,.6);
}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/4.4;object-fit:cover;
  border-radius:var(--r-img);filter:saturate(.96);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-img);
  background:linear-gradient(180deg,rgba(16,51,46,.10),rgba(16,51,46,.32));
  pointer-events:none;
}
.hero-stat{
  position:absolute;z-index:2;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px 20px;
  box-shadow:var(--sh-2);display:flex;flex-direction:column;gap:2px;
}
.hero-stat--a{right:-18px;top:56px}
.hero-stat--b{left:-18px;bottom:64px}
.hero-stat-num{font-family:var(--num);font-size:26px;font-weight:700;color:var(--ink);line-height:1.1}
.hero-stat-num em{font-style:normal;font-size:14px;font-weight:500;color:var(--jade);margin-left:2px}
.hero-stat-label{font-size:12px;color:var(--muted);letter-spacing:.04em}
.hero-strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  margin-top:72px;padding:24px 0;
  border-top:1px solid var(--line);
  font-size:14px;color:var(--muted);letter-spacing:.02em;
}
.hero-strip i{width:4px;height:4px;border-radius:50%;background:var(--accent);display:block}

/* ============ 指标条 ============ */
.metrics{padding:0}
.metric-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--line);
  border-bottom:1px solid var(--line);
}
.metric{background:var(--paper);padding:44px 28px}
.metric-num{display:block;font-family:var(--num);font-size:42px;font-weight:700;color:var(--ink);line-height:1}
.metric-num em{font-style:normal;font-size:15px;font-weight:500;font-family:var(--sans);color:var(--jade);margin-left:5px}
.metric-label{display:block;margin-top:12px;font-size:14px;color:var(--muted)}

/* ============ 服务主线 ============ */
.feature-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}
.feature-grid--sub{grid-template-columns:1fr 1fr;margin-top:24px}
.feature-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:36px;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(16,51,46,.3)}
.feature-card--lead{padding:0;overflow:hidden}
.feature-media{height:clamp(180px,21vw,236px);overflow:hidden;flex-shrink:0}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.feature-card--lead:hover .feature-media img{transform:scale(1.03)}
.feature-body{padding:34px;display:flex;flex-direction:column;flex:1}
.feature-num{
  font-family:var(--num);font-size:32px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(16,51,46,.42);
  margin-bottom:22px;letter-spacing:.02em;
}
.feature-card h3{font-size:25px;line-height:1.35;margin-bottom:14px}
.feature-card p{font-size:16px;color:var(--muted);margin-bottom:24px}
.feature-card .link-more{margin-top:auto}

/* ============ 使用场景 ============ */
.scene{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
  padding:56px 0;border-top:1px solid var(--line);
}
.scene:first-of-type{border-top:0;padding-top:0}
.scene--rev .scene-text{order:2}
.scene--rev .scene-media{order:1}
.scene-tag{
  display:inline-block;background:rgba(46,125,107,.12);color:#24695A;
  font-size:12px;letter-spacing:.08em;padding:5px 10px;
  border-radius:var(--r-tag);margin-bottom:18px;
}
.scene h3{font-size:28px;line-height:1.35;margin-bottom:16px}
.scene p{font-size:16px;color:var(--muted);max-width:480px}
.scene-list{margin-top:24px;display:flex;flex-direction:column;gap:11px}
.scene-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text)}
.scene-list li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;background:var(--accent);border-radius:1px}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img)}

/* ============ 案例 ============ */
.case-nav{display:flex;gap:10px;flex-shrink:0}
.circle-btn{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:var(--card);
  color:var(--ink);cursor:pointer;display:grid;place-items:center;
  font-size:16px;transition:border-color .2s ease,background-color .2s ease,color .2s ease;
}
.circle-btn:hover{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.case-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:14px;scrollbar-width:thin;
}
.case-track::-webkit-scrollbar{height:6px}
.case-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:var(--r-pill)}
.case-track::-webkit-scrollbar-track{background:transparent}
.case-card{
  flex:0 0 358px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(16,51,46,.3)}
.case-media{height:200px;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-body{padding:26px}
.case-index{font-family:var(--num);font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--accent)}
.case-body h3{font-size:19px;line-height:1.5;margin:10px 0 14px}
.case-metric{font-family:var(--num);font-size:26px;font-weight:700;color:var(--ink);line-height:1.2}
.case-body p{font-size:14px;color:var(--muted);margin-top:10px}

/* ============ 合作方案 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-img);padding:38px 30px;
  display:flex;flex-direction:column;position:relative;
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.plan--featured{border-color:var(--ink);box-shadow:var(--sh-2);transform:translateY(-8px);padding-top:46px}
.plan--featured:hover{transform:translateY(-12px)}
.plan--featured::before{
  content:"长期合作";position:absolute;top:-13px;right:26px;
  background:var(--accent);color:#fff;font-size:12px;letter-spacing:.08em;
  padding:5px 13px;border-radius:var(--r-tag);
}
.plan-name{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--ink);margin-bottom:10px}
.plan-desc{font-size:14px;color:var(--muted);min-height:46px;margin-bottom:22px}
.plan-price{font-family:var(--num);font-size:26px;font-weight:700;color:var(--ink);margin-bottom:26px;line-height:1.2}
.plan-price small{font-family:var(--sans);font-size:13px;font-weight:400;color:var(--muted);margin-left:8px}
.plan-list{display:flex;flex-direction:column;gap:12px;margin-bottom:30px}
.plan-list li{position:relative;padding-left:26px;font-size:15px;color:var(--text);line-height:1.7}
.plan-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--jade);font-size:13px;line-height:1.9}
.plan .btn{margin-top:auto;width:100%}
.plan-note{margin-top:32px;font-size:14px;color:var(--muted);text-align:center}

/* ============ 最新信息 ============ */
.news-list{display:grid;grid-template-columns:1.12fr 1fr;gap:24px;align-items:stretch}
.news-card--lead{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card--lead:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(16,51,46,.3)}
.news-card__media{height:266px;overflow:hidden}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.news-card--lead:hover .news-card__media img{transform:scale(1.03)}
.news-card__body{padding:30px;display:flex;flex-direction:column;flex:1}
.news-card__title{font-size:24px;line-height:1.4;margin:14px 0 12px}
.news-card__excerpt{
  font-size:15px;color:var(--muted);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.news-rows{display:flex;flex-direction:column;gap:16px}
.news-row{
  display:flex;flex-direction:column;gap:9px;flex:1;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 24px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-row:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(16,51,46,.3)}
.news-row__head{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);letter-spacing:.04em}
.news-row__title{font-family:var(--serif);font-size:17px;font-weight:600;color:var(--ink);line-height:1.55}
.news-row__desc{
  font-size:14px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-row__foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:6px;font-size:13px;color:var(--muted)}
.news-row__foot .arrow{transition:transform .2s ease}
.news-row:hover .news-row__foot .arrow{transform:translateX(4px);color:var(--accent)}
.news-empty{
  grid-column:1/-1;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:64px 24px;text-align:center;color:var(--muted);
}
.news-empty p{margin-bottom:20px;font-size:15px}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:64px;align-items:start}
.faq-intro h2{font-size:38px;line-height:1.25;margin-bottom:16px}
.faq-intro p{font-size:16px;color:var(--muted);max-width:360px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-family:var(--serif);font-size:18px;font-weight:700;
  color:var(--ink);transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-item summary::after{
  content:"+";font-family:var(--sans);font-size:22px;font-weight:400;color:var(--accent);
  line-height:1;transition:transform .25s ease;flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 0 26px;font-size:16px;line-height:1.9;color:var(--muted);max-width:660px}

/* ============ CTA 通栏 ============ */
.cta-band{background:var(--ink-deep);color:#E9E6DE;padding:96px 0}
.cta-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.cta-band h2{font-size:38px;line-height:1.28;color:var(--paper);margin-bottom:16px}
.cta-band .cta-copy p{font-size:16px;color:rgba(233,230,222,.72);max-width:420px}
.cta-form{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
  background:rgba(246,244,239,.05);border:1px solid rgba(233,230,222,.16);
  border-radius:var(--r-img);padding:26px;
}
.cta-form .field{display:flex;flex-direction:column;gap:7px}
.cta-form .field--wide{grid-column:1/-1}
.cta-form label{font-size:12px;letter-spacing:.08em;color:rgba(233,230,222,.6)}
.cta-form input{
  background:rgba(246,244,239,.05);
  border:1px solid rgba(233,230,222,.2);
  border-radius:8px;padding:11px 14px;font-size:15px;color:var(--paper);
  transition:border-color .2s ease,background-color .2s ease;
}
.cta-form input::placeholder{color:rgba(233,230,222,.38)}
.cta-form input:focus{outline:none;border-color:var(--accent);background:rgba(246,244,239,.08)}
.cta-form .btn{grid-column:1/-1;width:100%;margin-top:8px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:rgba(233,230,222,.75);padding-top:80px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand .brand-text strong{color:var(--paper)}
.footer-brand .brand-text em{color:rgba(233,230,222,.5)}
.footer-brand .brand-mark{background:var(--paper);color:var(--ink-deep)}
.footer-brand p{margin-top:20px;font-size:14px;line-height:1.85;max-width:300px;color:rgba(233,230,222,.62)}
.footer-col h3{
  font-family:var(--sans);font-size:14px;font-weight:500;
  letter-spacing:.08em;color:var(--paper);margin-bottom:20px;
}
.footer-col li{margin-bottom:11px;font-size:14px}
.footer-col a{color:rgba(233,230,222,.72)}
.footer-col a:hover{color:var(--accent)}
.qr-box{
  margin-top:18px;width:104px;height:104px;border-radius:8px;
  border:1px dashed rgba(233,230,222,.28);
  display:grid;place-items:center;text-align:center;
  font-size:12px;line-height:1.6;color:rgba(233,230,222,.45);padding:8px;
}
.footer-bottom{
  border-top:1px solid rgba(233,230,222,.14);
  padding:22px 0;display:flex;justify-content:space-between;
  align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(233,230,222,.5);
}
.footer-bottom a{color:rgba(233,230,222,.6)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .65s ease,transform .65s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-title{font-size:52px}
  .section-head h2{font-size:38px}
}
@media (max-width:1023px){
  .section{padding:76px 0}
  .nav-links{
    position:fixed;top:0;left:0;right:0;bottom:0;
    margin:0;background:var(--paper);
    flex-direction:column;align-items:flex-start;
    padding:104px 24px 140px;gap:0;
    transform:translateX(100%);transition:transform .32s ease;
    z-index:70;overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{width:100%;font-size:20px;padding:16px 0;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.is-active::before{display:none}
  .nav-link.is-active{color:var(--accent)}
  .nav-toggle{display:flex}
  .nav-actions .btn-ghost{display:none}
  .hero{padding:56px 0 0}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-title{font-size:42px}
  .hero-copy{max-width:none}
  .hero-visual{max-width:560px;margin:0 auto;width:100%}
  .hero-strip{margin-top:48px}
  .feature-grid{grid-template-columns:1fr}
  .feature-grid--sub{grid-template-columns:1fr}
  .scene{grid-template-columns:1fr;gap:28px;padding:44px 0}
  .scene--rev .scene-text{order:1}
  .scene--rev .scene-media{order:2}
  .scene p{max-width:none}
  .plan-grid{grid-template-columns:1fr;gap:20px}
  .plan--featured{transform:none;padding-top:38px}
  .plan--featured:hover{transform:translateY(-4px)}
  .news-list{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-intro p{max-width:none}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .cta-band{padding:68px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:36px}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:16px}
  .section-head h2{font-size:28px}
  .hero-title{font-size:34px;line-height:1.28}
  .hero-sub{font-size:16px;margin-bottom:28px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-visual img{aspect-ratio:4/3.4}
  .hero-stat{padding:12px 15px}
  .hero-stat--a{right:10px;top:14px}
  .hero-stat--b{left:10px;bottom:14px}
  .hero-stat-num{font-size:20px}
  .hero-strip{gap:12px;font-size:13px;margin-top:40px}
  .metric-grid{grid-template-columns:1fr 1fr}
  .metric{padding:28px 20px}
  .metric-num{font-size:32px}
  .feature-card{padding:26px}
  .feature-body{padding:26px}
  .feature-num{font-size:26px;margin-bottom:16px}
  .feature-card h3{font-size:21px}
  .scene h3{font-size:23px}
  .case-card{flex:0 0 82%}
  .case-media{height:172px}
  .news-card__media{height:200px}
  .news-card__body{padding:24px}
  .news-card__title{font-size:20px}
  .cta-band h2{font-size:27px}
  .cta-form{grid-template-columns:1fr;padding:20px}
  .faq-intro h2{font-size:27px}
  .faq-item summary{font-size:16px;padding:18px 0;gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:34px;padding-bottom:40px}
  .site-footer{padding-top:56px}
}
@media (max-width:480px){
  .brand-text strong{font-size:16px}
  .brand-text em{font-size:10px;letter-spacing:.1em}
  .brand-mark{width:32px;height:32px;font-size:16px}
  .nav-actions .btn-sm{padding:8px 14px;font-size:13px}
  .hero-badges li{font-size:12px;padding:6px 11px}
  .hero-strip i{display:none}
  .feature-num{-webkit-text-stroke:1px rgba(16,51,46,.36)}
  .plan{padding:28px 22px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1 !important;transform:none !important}
}

/* roulang page: category1 */
:root{
  --ink-green:#10332E;
  --ink-deep:#0A211E;
  --ochre:#C25B2E;
  --ochre-dark:#A8481F;
  --jade:#2E7D6B;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --line:#E2DED4;
  --line-strong:#DAD6CC;
  --text:#1B1E1C;
  --muted:#6B7069;
  --disabled-bg:#C9C6BE;
  --disabled-fg:#8A8880;
  --radius:10px;
  --radius-lg:12px;
  --radius-sm:4px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,51,46,.06);
  --shadow-2:0 12px 28px rgba(16,51,46,.10);
  --serif:'Noto Serif SC','Songti SC','SimSun',serif;
  --sans:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{margin:0;padding:0;scroll-behavior:smooth;scroll-padding-top:104px;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--ochre);outline-offset:2px;border-radius:2px;}

.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;
  height:48px;padding:0 26px;
  border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;line-height:1;
  border:1px solid transparent;
  transition:background-color .25s ease,color .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease;
  white-space:nowrap;
}
.btn .arrow{display:inline-block;transition:transform .25s ease;}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--ochre);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--ochre-dark);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0) scale(.98);}
.btn-outline{border-color:var(--ink-green);color:var(--ink-green);background:transparent;}
.btn-outline:hover{background:var(--ink-green);color:#F6F4EF;}
.btn-ghost{color:var(--ink-green);padding:0 14px;height:44px;}
.btn-ghost:hover{color:var(--ochre);}
.btn-sm{height:44px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{background:var(--disabled-bg);color:var(--disabled-fg);cursor:not-allowed;box-shadow:none;transform:none;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,239,.97);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,51,46,.02);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,51,46,.07);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease;}
.site-header.is-scrolled .nav-wrap{height:60px;}

.brand{display:inline-flex;align-items:center;gap:12px;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink-green);color:#F6F4EF;
  border-radius:6px;
  font-family:var(--serif);font-size:19px;line-height:1;
  letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-family:var(--serif);font-size:18px;color:var(--ink-green);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--muted);}

.nav-links{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-green);
  padding:6px 2px;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--ochre);transition:width .2s ease;
}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{font-weight:500;}
.nav-link.is-active::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:8px;height:8px;border-radius:50%;background:var(--ochre);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;
}
.nav-toggle span{display:block;width:18px;height:1.5px;margin:0 auto;background:var(--ink-green);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* ---------- 页面横幅 ---------- */
.page-banner{
  position:relative;
  padding:76px 0 64px;
  color:#F1EFE8;
  background:
    linear-gradient(180deg,rgba(10,33,30,.74) 0%,rgba(10,33,30,.66) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:rgba(241,239,232,.78);margin-bottom:26px;}
.breadcrumb a{color:rgba(241,239,232,.88);border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease;}
.breadcrumb a:hover{color:#fff;border-bottom-color:var(--ochre);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb [aria-current]{color:#fff;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.08em;color:#E7C6B2;
  text-transform:none;margin-bottom:20px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--ochre);display:inline-block;}
.page-banner h1{
  font-family:var(--serif);
  font-size:clamp(34px,5vw,56px);
  line-height:1.14;
  letter-spacing:-.02em;
  font-weight:700;
  max-width:820px;
}
.page-banner .lead{
  margin-top:22px;max-width:640px;
  font-size:17px;line-height:1.85;color:rgba(241,239,232,.84);
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.banner-tags span{
  display:inline-block;padding:6px 14px;
  border:1px solid rgba(241,239,232,.28);
  border-radius:var(--radius-sm);
  font-size:13px;color:rgba(241,239,232,.9);
}

/* ---------- 主区域 ---------- */
.section{padding:88px 0 0;}
.section-last{padding-bottom:96px;}
.category-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:64px;align-items:start;}

.toc{position:sticky;top:104px;border-left:1px solid var(--line);padding-left:22px;}
.toc h2{font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:500;margin-bottom:16px;}
.toc a{display:block;font-size:15px;color:var(--muted);padding:7px 0;transition:color .2s ease,transform .2s ease;border-left:0;}
.toc a:hover{color:var(--ochre);transform:translateX(4px);}
.toc a.is-current{color:var(--ink-green);font-weight:500;}
.toc-note{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.8;}

.block + .block{margin-top:96px;}
.block-title{
  font-family:var(--serif);
  font-size:clamp(26px,3vw,38px);
  line-height:1.25;letter-spacing:-.015em;
  color:var(--ink-green);margin-bottom:18px;
}
.block-desc{color:var(--muted);max-width:740px;font-size:17px;margin-bottom:40px;}

/* 引言 */
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.intro-copy p + p{margin-top:18px;color:var(--muted);}
.intro-copy .strong-line{
  font-family:var(--serif);font-size:21px;line-height:1.6;
  color:var(--ink-green);margin-bottom:18px;
}
.intro-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);}
.intro-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .5s ease;}
.intro-media:hover img{transform:scale(1.03);}
.media-badge{
  position:absolute;left:18px;bottom:18px;
  background:rgba(10,33,30,.82);color:#F1EFE8;
  padding:12px 16px;border-radius:var(--radius-sm);
  font-size:13px;line-height:1.6;backdrop-filter:blur(2px);
}
.media-badge b{font-family:var(--serif);font-size:20px;color:#fff;display:block;letter-spacing:.01em;}

/* 指标条 */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  margin:56px 0 0;
}
.metric{padding:32px 24px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;}
.metric strong{
  display:block;font-family:var(--serif);font-size:34px;line-height:1.1;
  color:var(--ochre);letter-spacing:-.01em;
}
.metric span{display:block;margin-top:10px;font-size:14px;color:var(--muted);}

/* 时间轴 */
.timeline{position:relative;}
.timeline-item{position:relative;padding:0 0 46px 70px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";position:absolute;left:20px;top:46px;bottom:-6px;width:1px;
  background:var(--line);
}
.timeline-item:last-child::before{display:none;}
.timeline-num{
  position:absolute;left:0;top:0;
  width:42px;height:42px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);
  font-size:13px;letter-spacing:.03em;color:var(--ink-green);
  box-shadow:var(--shadow-1);
  transition:border-color .25s ease,color .25s ease;
}
.timeline-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 30px;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.timeline-card h3{font-family:var(--serif);font-size:22px;line-height:1.35;color:var(--ink-green);margin-bottom:10px;}
.timeline-card p{color:var(--muted);font-size:16px;line-height:1.85;}
.timeline-card .point-list{margin-top:16px;}
.timeline-item:hover .timeline-card{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(16,51,46,.3);}
.timeline-item:hover .timeline-num{border-color:var(--ochre);color:var(--ochre);}

.point-list li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--text);
}
.point-list li + li{margin-top:8px;}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:7px;height:7px;background:var(--jade);border-radius:1px;
}

/* 交付清单 */
.deliver-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.deliver-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 26px 24px;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.deliver-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(16,51,46,.3);}
.deliver-card .tag{
  display:inline-block;padding:4px 10px;border-radius:var(--radius-sm);
  background:rgba(46,125,107,.1);color:var(--jade);font-size:12px;letter-spacing:.04em;margin-bottom:14px;
}
.deliver-card h3{font-family:var(--serif);font-size:19px;color:var(--ink-green);margin-bottom:10px;line-height:1.4;}
.deliver-card p{font-size:15px;line-height:1.85;color:var(--muted);}

/* 适用情形 */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(16,51,46,.3);}
.scene-card figure{margin:0;overflow:hidden;aspect-ratio:16/10;}
.scene-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.scene-card:hover figure img{transform:scale(1.03);}
.scene-body{padding:24px 24px 26px;flex:1;display:flex;flex-direction:column;}
.scene-body .tag{font-size:12px;letter-spacing:.06em;color:var(--ochre);margin-bottom:12px;}
.scene-body h3{font-family:var(--serif);font-size:19px;line-height:1.45;color:var(--ink-green);margin-bottom:12px;}
.scene-body p{font-size:15px;color:var(--muted);line-height:1.85;margin-bottom:16px;}
.scene-body .point-list{margin-top:auto;}

/* FAQ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;
  font-size:18px;font-weight:700;color:var(--ink-green);line-height:1.6;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--ochre);}
.faq-q .faq-icon{
  flex:0 0 auto;width:26px;height:26px;line-height:24px;text-align:center;
  border:1px solid var(--line);border-radius:50%;
  font-size:15px;font-weight:400;color:var(--ink-green);
  transition:transform .3s ease,background-color .3s ease,color .3s ease,border-color .3s ease;
}
.faq-item.is-open .faq-q .faq-icon{transform:rotate(180deg);background:var(--ochre);border-color:var(--ochre);color:#fff;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s ease;}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{padding:0 4px 24px;font-size:16px;line-height:1.9;color:var(--muted);max-width:840px;}

/* CTA 通栏 */
.cta-band{background:var(--ink-deep);color:#E9E6DE;padding:88px 0;margin-top:96px;}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.cta-band h2{font-family:var(--serif);font-size:clamp(26px,3vw,38px);line-height:1.25;color:#F6F4EF;margin-bottom:16px;}
.cta-band .cta-desc{color:rgba(233,230,222,.78);font-size:17px;max-width:520px;}
.cta-points{margin-top:28px;}
.cta-points li{position:relative;padding-left:20px;font-size:15px;color:rgba(233,230,222,.86);}
.cta-points li + li{margin-top:10px;}
.cta-points li::before{content:"";position:absolute;left:0;top:.7em;width:7px;height:7px;background:var(--ochre);border-radius:1px;}

.form-card{background:#0F2A25;border:1px solid rgba(226,222,212,.16);border-radius:var(--radius-lg);padding:32px;}
.field + .field{margin-top:18px;}
.field label{display:block;font-size:13px;letter-spacing:.04em;color:rgba(233,230,222,.72);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;padding:12px 14px;height:48px;
  background:rgba(246,244,239,.04);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);
  color:#F6F4EF;font-size:15px;
  transition:border-color .2s ease,background-color .2s ease;
}
.field textarea{height:104px;resize:vertical;line-height:1.7;padding-top:12px;}
.field input::placeholder,.field textarea::placeholder{color:rgba(233,230,222,.42);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--ochre);background:rgba(246,244,239,.07);}
.field.has-error input,.field.has-error textarea{border-color:var(--ochre);}
.field-hint{margin-top:8px;font-size:13px;color:rgba(233,230,222,.6);}
.field-error{margin-top:8px;font-size:13px;color:#E7A181;display:none;}
.field.has-error .field-error{display:block;}
.form-actions{margin-top:24px;}
.form-note{margin-top:14px;font-size:13px;color:rgba(233,230,222,.55);line-height:1.7;}

/* 页脚 */
.site-footer{background:var(--ink-deep);color:#E9E6DE;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding-bottom:56px;}
.footer-brand .brand-mark{background:#F6F4EF;color:var(--ink-deep);}
.footer-brand .brand-text strong{color:#F6F4EF;}
.footer-brand .brand-text em{color:rgba(233,230,222,.6);}
.footer-brand p{margin-top:20px;font-size:15px;line-height:1.85;color:rgba(233,230,222,.7);max-width:340px;}
.footer-col h3{
  font-size:13px;letter-spacing:.08em;font-weight:500;
  color:rgba(233,230,222,.6);margin-bottom:18px;
}
.footer-col ul li{font-size:15px;color:rgba(233,230,222,.82);line-height:2;}
.footer-col ul li a{position:relative;transition:color .2s ease;}
.footer-col ul li a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--ochre);
  transition:width .2s ease;
}
.footer-col ul li a:hover{color:#fff;}
.footer-col ul li a:hover::after{width:100%;}
.qr-box{
  margin-top:18px;width:120px;height:120px;
  border:1px dashed rgba(226,222,212,.32);border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:13px;color:rgba(233,230,222,.6);line-height:1.7;
}
.footer-bottom{
  border-top:1px solid rgba(226,222,212,.14);
  padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(233,230,222,.6);
}
.footer-bottom a{color:rgba(233,230,222,.72);border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease;}
.footer-bottom a:hover{color:#fff;border-bottom-color:var(--ochre);}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease;}
.reveal.is-visible{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1279px){
  .category-layout{grid-template-columns:220px minmax(0,1fr);gap:48px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:1023px){
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;inset:72px 0 0 0;
    background:var(--paper);
    flex-direction:column;align-items:flex-start;gap:6px;
    padding:32px 24px 140px;
    transform:translateX(100%);
    transition:transform .3s ease;
    overflow-y:auto;z-index:70;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{font-size:20px;padding:12px 0;width:100%;border-bottom:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav-link.is-active::before{left:auto;right:6px;}
  .btn-ghost{display:none;}
  .site-header .nav-wrap{height:64px;}
  .category-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .toc{display:none;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .scene-grid{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 20px;}
  .section{padding:64px 0 0;}
  .block + .block{margin-top:64px;}
  .page-banner{padding:56px 0 48px;}
  .page-banner .lead{font-size:16px;}
  .deliver-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--line);padding:24px 4px;}
  .metric:last-child{border-bottom:0;}
  .timeline-item{padding-left:58px;}
  .timeline-item::before{left:17px;}
  .timeline-num{width:36px;height:36px;font-size:12px;}
  .timeline-card{padding:22px 22px;}
  .cta-band{padding:64px 0;margin-top:64px;}
  .form-card{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn-block-mobile{width:100%;}
}
@media (max-width:520px){
  .brand-text em{display:none;}
  .page-banner h1{font-size:30px;}
  .block-title{font-size:25px;}
  .faq-q{font-size:16px;padding:20px 2px;}
  .banner-tags span{font-size:12px;padding:5px 11px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --ink:#10332E;
  --ink-deep:#0A211E;
  --accent:#C25B2E;
  --accent-dark:#A94A21;
  --jade:#2E7D6B;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E2DED4;
  --text:#1B1E1C;
  --text-2:#6B7069;
  --muted:#8A8880;
  --disabled:#C9C6BE;
  --radius-card:10px;
  --radius-lg:12px;
  --radius-tag:4px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,51,46,.06);
  --shadow-2:0 12px 28px rgba(16,51,46,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --header-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.28;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(194,91,46,.18)}

.container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-pill);
  border:1px solid transparent;font-size:15px;font-weight:500;
  cursor:pointer;white-space:nowrap;transition:all .22s var(--ease);
  background:transparent;font-family:var(--sans);
}
.btn .arrow{transition:transform .22s var(--ease);line-height:1}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{color:var(--ink);border-color:var(--line);background:transparent}
.btn-ghost:hover{border-color:var(--ink);background:rgba(16,51,46,.04)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{height:44px;padding:0 20px;font-size:14.5px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#E7E4DC;color:var(--muted);border-color:transparent;cursor:not-allowed;box-shadow:none;transform:none}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;color:var(--ink);
  border-bottom:1px solid transparent;padding-bottom:2px;transition:color .2s,border-color .2s;
}
.link-arrow:hover{color:var(--accent);border-color:rgba(194,91,46,.45)}
.link-arrow:hover .arrow{transform:translateX(4px)}
.link-arrow .arrow{transition:transform .22s var(--ease)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--paper);
  border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 1px 12px rgba(16,51,46,.07)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h);transition:height .25s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:60px}

.brand{display:inline-flex;align-items:center;gap:10px;position:relative;z-index:8}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;flex:0 0 auto;
  background:var(--ink);color:#F3F1EA;border-radius:6px;
  font-family:var(--serif);font-size:17px;line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-family:var(--serif);font-size:17px;font-weight:600;color:var(--ink);letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--text-2);margin-top:4px}

.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  font-size:15.5px;color:var(--text-2);padding:6px 0;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:500}
.nav-link.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto}

.nav-actions{display:flex;align-items:center;gap:12px;position:relative;z-index:8}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .25s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-top:28px;font-size:14px;color:var(--text-2);
}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--disabled)}
.breadcrumb .current{color:var(--ink);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-shell{padding-bottom:96px}
.article-head{padding-top:34px;max-width:860px}
.cat-tag{
  display:inline-block;padding:4px 12px;border-radius:var(--radius-tag);
  background:rgba(46,125,107,.12);color:var(--jade);
  font-size:13px;letter-spacing:.04em;line-height:1.6;
}
.article-title{
  margin-top:18px;
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.22;
  letter-spacing:-.015em;
}
.article-meta{
  margin-top:24px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 20px;font-size:14px;color:var(--text-2);
}
.article-meta span + span{border-left:1px solid var(--line);padding-left:20px}

.article-cover{margin-top:36px;max-width:860px}
.article-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--radius-lg);background:#EAE7DE;
}
.article-cover figcaption{margin-top:12px;font-size:13px;color:var(--text-2);text-align:center}

/* ---------- 正文布局 ---------- */
.article-layout{margin-top:56px}
.article-main{max-width:760px;margin:0 auto}

.article-body{font-size:18px;line-height:1.9;color:var(--text);overflow-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  font-size:26px;line-height:1.4;margin:2em 0 .85em;padding-left:14px;
  border-left:3px solid var(--accent);
}
.article-body h3{font-size:20px;line-height:1.5;margin:1.7em 0 .7em;color:var(--ink)}
.article-body h4{font-size:17.5px;margin:1.5em 0 .6em;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:2px}
.article-body ul li{position:relative;padding-left:18px;margin:.5em 0}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.75em;width:6px;height:6px;
  background:var(--ink);border-radius:1px;
}
.article-body ol{counter-reset:li;padding-left:0}
.article-body ol li{position:relative;padding-left:30px;margin:.5em 0;counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.15em;
  font-family:var(--serif);font-size:15px;color:var(--accent);font-weight:600;
}
.article-body a{color:var(--ink);border-bottom:1px solid rgba(194,91,46,.45);transition:color .2s,border-color .2s}
.article-body a:hover{color:var(--accent);border-color:var(--accent)}
.article-body strong{color:var(--ink);font-weight:600}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--ink);
  background:rgba(46,125,107,.07);border-radius:0 var(--radius-card) var(--radius-card) 0;
  color:var(--text);font-size:17px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-card);margin:1.6em auto;width:auto;max-width:100%}
.article-body figure{margin:1.8em 0}
.article-body figure img{margin:0 auto}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--text-2);text-align:center}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:16px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 16px;text-align:left}
.article-body th{background:#F1EFE8;color:var(--ink);font-weight:600}
.article-body code{
  background:#EFEDE6;padding:2px 6px;border-radius:4px;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em;
}
.article-body pre{
  background:#F1EFE8;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px 18px;overflow-x:auto;font-size:15px;line-height:1.7;margin:1.6em 0;
}
.article-body pre code{background:none;padding:0}

/* 锚点目录 */
.article-toc{display:none}
.article-toc h2{
  font-family:var(--sans);font-size:12px;letter-spacing:.16em;
  color:var(--muted);font-weight:600;margin-bottom:14px;
}
.toc-list a{
  display:block;padding:7px 0 7px 14px;font-size:14px;color:var(--text-2);
  border-left:1px solid var(--line);transition:color .2s,border-color .2s,padding .2s;
}
.toc-list a:hover{color:var(--ink);border-color:var(--accent);padding-left:18px}

/* 空态 */
.article-empty{
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:48px 28px;text-align:center;background:var(--surface);
}
.article-empty p{font-size:17px;color:var(--text-2);margin-bottom:20px}

.article-actions{
  margin-top:52px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.article-actions .meta-note{font-size:14px;color:var(--text-2)}

/* ---------- 相关推荐 ---------- */
.related{margin-top:96px;padding-top:56px;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;
  color:var(--accent);margin-bottom:12px;font-family:var(--sans);
}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(16,51,46,.28)}
.related-media{overflow:hidden;background:#EAE7DE}
.related-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .45s var(--ease)}
.related-card:hover .related-media img{transform:scale(1.03)}
.related-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-body h3{font-size:19px;line-height:1.4}
.related-body p{font-size:15px;line-height:1.78;color:var(--text-2)}
.related-more{
  margin-top:auto;padding-top:6px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--accent);
}
.related-card:hover .related-more .arrow{transform:translateX(4px)}
.related-more .arrow{transition:transform .22s var(--ease)}

/* ---------- 结尾 CTA ---------- */
.cta-band{position:relative;margin-top:96px;background:var(--ink-deep);color:#E9E6DE;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.16;
}
.cta-inner{
  position:relative;display:grid;grid-template-columns:1.15fr .85fr;
  gap:64px;padding-top:88px;padding-bottom:88px;align-items:start;
}
.cta-copy h2{color:#F6F4EF;font-size:clamp(26px,3.2vw,38px);line-height:1.3}
.cta-copy p{margin-top:20px;font-size:16.5px;line-height:1.9;color:#B9BFB9;max-width:34em}
.cta-points{margin-top:28px;display:grid;gap:12px}
.cta-points li{position:relative;padding-left:22px;font-size:15.5px;color:#C9C6BE}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.7em;width:8px;height:1px;background:var(--accent);
}
.cta-copy .eyebrow{color:#D98A5E}

.cta-form{
  display:grid;gap:16px;padding:28px;border-radius:var(--radius-lg);
  background:rgba(255,255,255,.05);border:1px solid rgba(233,230,222,.18);
}
.cta-form label{display:grid;gap:8px;font-size:14px;color:#B9BFB9}
.cta-form input{
  height:46px;padding:0 14px;border-radius:8px;
  border:1px solid rgba(233,230,222,.22);background:rgba(255,255,255,.06);
  color:#F3F1EA;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.cta-form input::placeholder{color:#8A8880}
.cta-form input:focus{border-color:var(--accent);background:rgba(255,255,255,.1);outline:none}
.form-note{font-size:14px;color:#9ED0BC;min-height:22px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:#E9E6DE;padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.site-footer .brand-mark{background:transparent;border:1px solid rgba(233,230,222,.35);color:#F3F1EA}
.site-footer .brand-text strong{color:#F3F1EA}
.site-footer .brand-text em{color:#8A8880}
.footer-brand p{margin-top:18px;font-size:15px;line-height:1.85;color:#A9B0AA;max-width:34em}
.footer-col h3{
  font-family:var(--sans);font-size:15px;font-weight:600;color:#F3F1EA;
  letter-spacing:.04em;margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14.5px;color:#B9BFB9;line-height:1.75}
.footer-col a{font-size:14.5px;color:#B9BFB9;transition:color .2s var(--ease)}
.footer-col a:hover{color:#F3F1EA}
.qr-box{
  margin-top:18px;width:112px;height:112px;border-radius:10px;
  border:1px dashed rgba(233,230,222,.3);display:grid;place-items:center;
  text-align:center;font-size:12px;line-height:1.7;color:#8A8880;
}
.footer-bottom{
  border-top:1px solid rgba(233,230,222,.14);
  padding-top:22px;padding-bottom:28px;
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:13px;color:#8A8880;
}
.footer-bottom a{color:#8A8880;transition:color .2s var(--ease)}
.footer-bottom a:hover{color:#E9E6DE}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (min-width:1280px){
  .article-layout.has-toc{
    display:grid;grid-template-columns:minmax(0,760px) 240px;
    gap:56px;justify-content:center;align-items:start;
  }
  .article-layout.has-toc .article-main{margin:0}
  .article-layout.has-toc .article-toc{display:block;position:sticky;top:96px}
}

@media (max-width:1023px){
  .nav-links{
    position:fixed;inset:0;z-index:5;
    display:flex;flex-direction:column;align-items:flex-start;gap:2px;
    padding:96px 24px 40px;background:var(--paper);
    transform:translateX(100%);transition:transform .32s var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{font-size:20px;width:100%;padding:14px 0;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-ghost{display:none}
}

@media (max-width:900px){
  .related-grid{grid-template-columns:1fr 1fr}
  .related-grid .related-card:last-child{display:none}
  .cta-inner{grid-template-columns:1fr;gap:40px;padding-top:72px;padding-bottom:72px}
}

@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .container{padding-left:20px;padding-right:20px}
  .article-shell{padding-bottom:64px}
  .article-meta{font-size:13.5px}
  .article-body{font-size:16.5px;line-height:1.85}
  .article-body h2{font-size:22px;margin-top:1.8em}
  .article-body h3{font-size:18.5px}
  .article-body table{white-space:normal}
  .related{margin-top:64px;padding-top:44px}
  .related-grid{grid-template-columns:1fr}
  .related-grid .related-card:last-child{display:flex}
  .cta-band{margin-top:64px}
  .article-actions{flex-direction:column;align-items:flex-start}
  .article-actions .btn,.cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{gap:32px;padding-top:56px;padding-bottom:56px}
  .site-footer{padding-top:56px}
}

@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .breadcrumb{padding-top:20px;font-size:13px}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .brand-text em{display:none}
  .article-cover img{border-radius:var(--radius-card)}
}

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

/* roulang page: category3 */
:root{
  --ink:#10332E;
  --ink-deep:#0A211E;
  --accent:#C25B2E;
  --jade:#2E7D6B;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E2DED4;
  --line-soft:#EFEBE3;
  --text:#1B1E1C;
  --muted:#6B7069;
  --disabled:#C9C6BE;
  --disabled-text:#8A8880;
  --radius:10px;
  --radius-lg:12px;
  --radius-tag:4px;
  --shadow:0 1px 2px rgba(16,51,46,.06);
  --shadow-hover:0 12px 28px rgba(16,51,46,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --gutter:24px;
  --section-gap:112px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius);}
a{color:var(--ink);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;font-weight:600;letter-spacing:-.015em;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}

.container{max-width:1200px;margin:0 auto;padding:0 var(--gutter);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.96);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,51,46,.04);
  transition:height .25s ease,box-shadow .25s ease;
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease;}
.site-header.is-scrolled .nav-wrap{height:60px;}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,51,46,.08);}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:8px;
  background:var(--ink);color:#F3EFE6;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:19px;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(246,244,239,.18);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-text strong{font-family:var(--serif);font-size:19px;color:var(--ink);letter-spacing:.01em;white-space:nowrap;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.1em;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;font-size:15px;color:var(--ink);padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--accent);
  transition:width .2s ease;
}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:8px;height:8px;border-radius:50%;background:var(--accent);
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:999px;
  font-size:15px;line-height:1;padding:13px 24px;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .12s ease;
  font-family:var(--sans);
}
.btn .arrow{transition:transform .2s ease;display:inline-block;}
.btn:hover .arrow{transform:translateX(4px);}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--accent);color:#FFF8F2;box-shadow:0 1px 2px rgba(194,91,46,.24);}
.btn-primary:hover{background:#A94A22;color:#fff;box-shadow:var(--shadow-hover);}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#F6F4EF;}
.btn-ghost{background:transparent;color:var(--ink);border-color:transparent;padding-left:6px;padding-right:6px;}
.btn-ghost:hover{color:var(--accent);}
.btn-sm{padding:11px 20px;font-size:14px;height:44px;}
.btn-lg{padding:16px 30px;font-size:16px;}
.btn-full{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);
  border-radius:10px;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);margin:4px auto;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* ---------- 页头 banner ---------- */
.page-banner{
  position:relative;
  background-size:cover;background-position:center;
  padding:76px 0 64px;
  color:#F6F4EF;
}
.page-banner::before{
  content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,33,30,.86) 0%,rgba(10,33,30,.68) 52%,rgba(10,33,30,.42) 100%);
}
.banner-inner{position:relative;z-index:2;max-width:820px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:rgba(246,244,239,.72);margin-bottom:22px;}
.breadcrumb a{color:rgba(246,244,239,.82);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb span{color:rgba(246,244,239,.4);}
.breadcrumb em{font-style:normal;color:#fff;}
.tag{
  display:inline-block;font-size:12px;letter-spacing:.08em;
  padding:5px 12px;border-radius:var(--radius-tag);
  background:rgba(46,125,107,.14);color:var(--jade);
  border:1px solid rgba(46,125,107,.22);
}
.page-banner .tag{background:rgba(246,244,239,.12);color:#F6F4EF;border-color:rgba(246,244,239,.28);}
.page-banner h1{
  color:#FBF9F4;font-size:54px;line-height:1.15;margin:22px 0 20px;
}
.banner-sub{font-size:17px;color:rgba(246,244,239,.82);max-width:640px;margin:0;}

/* ---------- 通用板块 ---------- */
main{display:block;}
.section{padding:var(--section-gap) 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-deep{background:var(--ink-deep);color:#E9E6DE;}
.section-deep h2,.section-deep h3{color:#FBF9F4;}
.section-head{max-width:760px;margin-bottom:56px;}
.section-head h2{font-size:42px;line-height:1.22;margin:16px 0 18px;}
.section-head p{color:var(--muted);font-size:17px;margin:0;}
.section-deep .section-head p{color:rgba(233,230,222,.72);}
.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--jade);text-transform:none;}
.section-deep .eyebrow{color:#7FBBA8;}

/* ---------- 不等高双列卡片 ---------- */
.bento{
  display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start;
}
.bento-col{display:flex;flex-direction:column;gap:28px;}
.bento-col.offset{margin-top:56px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 32px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(16,51,46,.28);}
.card-flat{background:transparent;border:none;box-shadow:none;padding:0;}
.card-flat:hover{transform:none;box-shadow:none;border-color:transparent;}
.card-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:52px;height:52px;border:1px solid var(--line);border-radius:10px;
  font-family:var(--serif);font-size:20px;color:var(--ink);margin-bottom:22px;
}
.card h3{font-size:25px;line-height:1.35;margin-bottom:14px;}
.card p{color:var(--muted);font-size:16px;line-height:1.85;}
.card-figure{margin:-34px -32px 26px;border-radius:var(--radius) var(--radius) 0 0;overflow:hidden;}
.card-figure img{width:100%;height:220px;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.card:hover .card-figure img{transform:scale(1.03);}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;color:var(--ink);margin-top:20px;border-bottom:1px solid var(--line);padding-bottom:4px;}
.link-arrow:hover{border-color:var(--accent);color:var(--accent);}
.link-arrow .arrow{transition:transform .2s ease;}
.link-arrow:hover .arrow{transform:translateX(4px);}

/* ---------- 细线对比表 ---------- */
.mini-table{width:100%;border-collapse:collapse;margin-top:22px;font-size:15px;}
.mini-table th,.mini-table td{
  text-align:left;padding:12px 10px;border-top:1px solid var(--line-soft);vertical-align:top;
}
.mini-table thead th{
  border-top:none;border-bottom:1px solid var(--line);
  font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:600;
  font-family:var(--sans);padding-bottom:10px;
}
.mini-table td:first-child{color:var(--muted);width:38%;}
.mini-table td:last-child{color:var(--ink);}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);}
.table-lg{width:100%;border-collapse:collapse;min-width:640px;font-size:16px;}
.table-lg th,.table-lg td{padding:18px 20px;text-align:left;border-bottom:1px solid var(--line-soft);}
.table-lg thead th{background:#F1EEE6;font-size:13px;letter-spacing:.06em;color:var(--ink);font-family:var(--sans);}
.table-lg tbody tr:last-child td{border-bottom:none;}
.table-lg td:first-child{color:var(--ink);font-weight:600;}
.table-lg td{color:var(--muted);}
.table-lg td strong{color:var(--accent);font-weight:600;}

/* ---------- 指标条 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid rgba(233,230,222,.2);border-bottom:1px solid rgba(233,230,222,.2);
}
.metric{padding:38px 26px;border-left:1px solid rgba(233,230,222,.2);}
.metric:first-child{border-left:none;}
.metric .num{font-family:var(--serif);font-size:44px;line-height:1.1;color:#FBF9F4;display:block;margin-bottom:10px;}
.metric .num small{font-size:18px;margin-left:4px;color:#7FBBA8;}
.metric span.lbl{font-size:14px;color:rgba(233,230,222,.7);line-height:1.7;}

/* ---------- 步骤时间轴 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);}
.step{padding:34px 26px 8px;border-left:1px solid var(--line);position:relative;}
.step:first-child{border-left:none;}
.step::before{
  content:"";position:absolute;left:26px;top:-5px;width:9px;height:9px;border-radius:50%;
  background:var(--accent);
}
.step .idx{font-size:12px;letter-spacing:.1em;color:var(--jade);display:block;margin-bottom:14px;}
.step h3{font-size:20px;margin-bottom:12px;}
.step p{font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- 清单 ---------- */
.check-list{margin-top:18px;}
.check-list li{
  position:relative;padding-left:22px;font-size:15.5px;color:var(--muted);line-height:1.9;
  margin-bottom:8px;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--jade);
}
.check-list.dark li{color:rgba(233,230,222,.78);}
.check-list.dark li::before{background:#7FBBA8;}

/* ---------- 双栏图文 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;}
.split.reverse .split-media{order:2;}
.split.reverse .split-body{order:1;}
.split-media img{width:100%;height:380px;object-fit:cover;border-radius:var(--radius-lg);}
.split-body h2{font-size:38px;line-height:1.24;margin:16px 0 20px;}
.split-body p{color:var(--muted);}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;text-align:left;
  font-family:var(--serif);font-size:18px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--ink);
  transition:transform .25s ease,background .2s ease,color .2s ease,border-color .2s ease;
  line-height:1;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--accent);border-color:var(--accent);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;
}
.faq-item.is-open .faq-a{max-height:420px;padding-bottom:24px;}
.faq-a p{font-size:16px;color:var(--muted);line-height:1.9;max-width:840px;}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink-deep);color:#E9E6DE;padding:88px 0;}
.cta-grid{display:grid;grid-template-columns:1fr 460px;gap:64px;align-items:start;}
.cta-band h2{color:#FBF9F4;font-size:40px;line-height:1.24;margin:14px 0 18px;}
.cta-band p{color:rgba(233,230,222,.76);font-size:16.5px;}
.cta-band .eyebrow{color:#7FBBA8;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;}
.cta-band .btn-outline{border-color:rgba(246,244,239,.45);color:#F6F4EF;}
.cta-band .btn-outline:hover{background:#F6F4EF;color:var(--ink-deep);}
.form-card{background:#F6F4EF;border-radius:var(--radius-lg);padding:32px;color:var(--text);}
.form-card h3{font-size:21px;margin-bottom:8px;}
.form-card .hint{font-size:14px;color:var(--muted);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;font-family:var(--sans);font-size:15px;color:var(--text);
  padding:13px 14px;border:1px solid #DAD6CC;border-radius:8px;background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{resize:vertical;min-height:92px;line-height:1.7;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(16,51,46,.08);}
.form-note{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:#E9E6DE;padding:76px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px;}
.site-footer .brand-text strong{color:#FBF9F4;}
.site-footer .brand-text em{color:rgba(233,230,222,.6);}
.site-footer .brand-mark{background:#F6F4EF;color:var(--ink-deep);}
.footer-brand p{color:rgba(233,230,222,.66);font-size:15px;margin-top:20px;max-width:340px;line-height:1.85;}
.footer-col h3{font-family:var(--sans);font-size:14px;letter-spacing:.08em;color:#FBF9F4;margin-bottom:20px;font-weight:600;}
.footer-col ul li{font-size:15px;color:rgba(233,230,222,.72);margin-bottom:12px;line-height:1.7;}
.footer-col ul li a{color:rgba(233,230,222,.72);}
.footer-col ul li a:hover{color:var(--accent);}
.qr-box{
  margin-top:18px;width:112px;height:112px;border:1px dashed rgba(233,230,222,.35);border-radius:8px;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12.5px;color:rgba(233,230,222,.6);line-height:1.6;padding:8px;
}
.footer-bottom{
  border-top:1px solid rgba(233,230,222,.16);padding:24px 0 30px;
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(233,230,222,.58);
}
.footer-bottom a{color:rgba(233,230,222,.7);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease;}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .page-banner h1{font-size:48px;}
  .section-head h2{font-size:38px;}
  .cta-grid{grid-template-columns:1fr 400px;gap:48px;}
}
@media (max-width:1023px){
  :root{--section-gap:80px;}
  .nav-links{
    position:fixed;inset:72px 0 0 0;background:var(--bg);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:28px 24px 120px;overflow-y:auto;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease;
    border-top:1px solid var(--line);
  }
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-link{font-size:20px;width:100%;padding:16px 0;border-bottom:1px solid var(--line-soft);}
  .nav-link.is-active::before{left:0;position:static;display:inline-block;margin-right:12px;transform:none;}
  .nav-toggle{display:block;}
  .nav-actions .btn-ghost{display:none;}
  .brand-text em{display:none;}
  .bento{grid-template-columns:1fr;}
  .bento-col.offset{margin-top:0;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(3){border-left:none;}
  .metric{border-top:1px solid rgba(233,230,222,.2);}
  .metric:nth-child(1),.metric:nth-child(2){border-top:none;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step:nth-child(3){border-left:none;}
  .step{border-top:1px solid var(--line);padding-top:28px;margin-top:16px;}
  .step:nth-child(1),.step:nth-child(2){border-top:none;margin-top:0;}
  .split{grid-template-columns:1fr;gap:36px;}
  .split.reverse .split-media,.split.reverse .split-body{order:0;}
  .split-media img{height:300px;}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  :root{--section-gap:64px;}
  .page-banner{padding:56px 0 48px;}
  .page-banner h1{font-size:34px;}
  .banner-sub{font-size:16px;}
  .section-head h2{font-size:28px;}
  .split-body h2{font-size:28px;}
  .card{padding:26px 22px;}
  .card-figure{margin:-26px -22px 22px;}
  .card-figure img{height:190px;}
  .card h3{font-size:21px;}
  .cta-band{padding:64px 0;}
  .cta-band h2{font-size:28px;}
  .cta-actions .btn{width:100%;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-left:none;padding:26px 20px;}
  .steps{grid-template-columns:1fr;}
  .step{border-left:none;padding-left:22px;}
  .step::before{left:0;}
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .brand-text strong{font-size:17px;}
  .brand-mark{width:34px;height:34px;flex-basis:34px;font-size:17px;}
  .btn{padding:12px 18px;font-size:14px;}
  .nav-actions .btn-primary{padding:10px 14px;font-size:13px;}
  .page-banner h1{font-size:30px;}
  .metrics .num{font-size:36px;}
  .form-card{padding:24px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink:#10332E;
  --ink-deep:#0A211E;
  --orange:#C25B2E;
  --orange-dark:#A44A22;
  --jade:#2E7D6B;
  --jade-soft:#E8F0EC;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --line:#E2DED4;
  --line-soft:#EDEAE2;
  --text:#1B1E1C;
  --muted:#6B7069;
  --disabled:#C9C6BE;
  --radius:10px;
  --radius-lg:12px;
  --radius-tag:4px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,51,46,.06);
  --shadow-2:0 12px 28px rgba(16,51,46,.10);
  --serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --section:110px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  letter-spacing:0;
}
img{max-width:100%;display:block;border-radius:var(--radius)}
a{color:inherit;text-decoration:none}
a:hover{color:var(--orange)}
button,input,textarea,select{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:-.01em;color:var(--ink)}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--section) 0}
.section-sm{padding:72px 0}
.section-line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.08em;color:var(--jade);
  text-transform:none;font-weight:500;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--jade);display:inline-block}
.section-head{max-width:760px;margin-bottom:56px}
.section-head h2{font-size:42px;line-height:1.2;margin:16px 0 18px}
.section-head p{color:var(--muted);font-size:17px;margin:0}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,51,46,.08)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;transition:height .28s ease}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;flex-shrink:0;border-radius:6px;
  background:var(--ink);color:var(--paper);
  display:grid;place-items:center;font-family:var(--serif);font-size:19px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-text strong{font-family:var(--serif);font-size:18px;color:var(--ink);font-weight:700;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:18px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 2px;font-size:15px;color:var(--ink);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:2px;right:2px;bottom:4px;height:1px;
  background:var(--orange);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{font-weight:600;color:var(--ink)}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;width:8px;height:8px;
  border-radius:50%;background:var(--orange);transform:translateY(-50%);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:10px;background:var(--card);cursor:pointer;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .25s ease,opacity .25s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;padding:14px 26px;cursor:pointer;
  transition:background .25s ease,color .25s ease,border-color .25s ease,transform .2s ease,box-shadow .25s ease;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary .arrow{transition:transform .25s ease}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--card);border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}
.btn-light{background:transparent;color:var(--paper);border-color:rgba(246,244,239,.42)}
.btn-light:hover{background:rgba(246,244,239,.12);color:#fff;border-color:rgba(246,244,239,.7)}
.btn-link{background:none;border:0;padding:0;color:var(--ink);font-weight:600;gap:6px}
.btn-link:hover{color:var(--orange)}
.btn-link .arrow{transition:transform .25s ease}
.btn-link:hover .arrow{transform:translateX(4px)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn:active{transform:scale(.98)}
.btn:disabled{background:var(--disabled);color:#8A8880;cursor:not-allowed;box-shadow:none;transform:none}

/* 内页横幅 */
.banner{
  position:relative;
  min-height:320px;
  display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(10,33,30,.86) 0%,rgba(10,33,30,.68) 48%,rgba(10,33,30,.42) 100%);
}
.banner-inner{position:relative;z-index:2;padding:64px 0 52px;width:100%}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:rgba(246,244,239,.72);margin-bottom:26px}
.breadcrumb a{color:rgba(246,244,239,.78)}
.breadcrumb a:hover{color:#fff}
.breadcrumb span.sep{color:rgba(246,244,239,.4)}
.banner .eyebrow{color:#E4C4AF}
.banner .eyebrow::before{background:#E4C4AF}
.banner h1{
  color:#fff;font-size:60px;line-height:1.1;margin:18px 0 20px;
  max-width:820px;letter-spacing:-.02em;
}
.banner p.lead{color:rgba(246,244,239,.86);font-size:18px;line-height:1.8;max-width:640px;margin:0 0 32px}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 数据指标条 */
.metrics-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.metric{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;box-shadow:var(--shadow-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(16,51,46,.28)}
.metric-num{
  font-family:var(--serif);font-size:40px;line-height:1;color:var(--orange);display:block;margin-bottom:14px;
}
.metric h3{font-size:18px;margin-bottom:8px}
.metric p{font-size:14.5px;color:var(--muted);line-height:1.75;margin:0}

/* 交错宽卡 */
.spotlight{display:flex;flex-direction:column;gap:40px}
.sc-item{
  display:grid;grid-template-columns:1.45fr 1fr;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.sc-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(16,51,46,.28)}
.sc-item.is-flip .sc-media{order:2}
.sc-media{position:relative;min-height:360px;overflow:hidden;background:var(--jade-soft);border-radius:0}
.sc-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease}
.sc-item:hover .sc-media img{transform:scale(1.03)}
.sc-body{padding:48px 44px;display:flex;flex-direction:column;justify-content:center}
.sc-index{
  font-family:var(--serif);font-size:15px;color:var(--jade);
  border:1px solid var(--line);border-radius:var(--radius-tag);
  padding:3px 10px;display:inline-block;align-self:flex-start;margin-bottom:20px;letter-spacing:.06em;
}
.sc-body h3{font-size:27px;line-height:1.3;margin-bottom:16px}
.sc-body > p{color:var(--muted);font-size:16.5px;margin-bottom:22px}
.point-list{margin:0 0 26px}
.point-list li{
  position:relative;padding-left:20px;font-size:15.5px;color:var(--text);
  line-height:1.8;margin-bottom:8px;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--ink);
}

/* 流程 */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.flow-item{
  padding:36px 28px 8px 0;border-right:1px solid var(--line);
  transition:background .3s ease;
}
.flow-item:last-child{border-right:0;padding-right:0}
.flow-item .flow-num{
  font-family:var(--serif);font-size:15px;color:var(--muted);letter-spacing:.08em;display:block;margin-bottom:18px;
}
.flow-item h3{font-size:21px;margin-bottom:12px}
.flow-item p{font-size:15.5px;color:var(--muted);margin:0}

/* 适用场景 */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 26px;box-shadow:var(--shadow-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(16,51,46,.28)}
.scene-tag{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--jade);
  background:var(--jade-soft);border-radius:var(--radius-tag);padding:4px 9px;margin-bottom:18px;
}
.scene-card h3{font-size:20px;margin-bottom:12px;line-height:1.4}
.scene-card p{font-size:15px;color:var(--muted);margin:0}

/* 交付清单 */
.deliver-wrap{
  display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:start;
}
.deliver-list{border-top:1px solid var(--line)}
.deliver-list li{
  display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);
}
.deliver-list .num{font-family:var(--serif);color:var(--orange);font-size:15px;min-width:28px;padding-top:3px}
.deliver-list strong{display:block;font-size:17px;color:var(--ink);font-weight:600;margin-bottom:4px}
.deliver-list span.desc{font-size:15px;color:var(--muted);line-height:1.75}

/* FAQ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:none;border:0;cursor:pointer;text-align:left;
  padding:22px 0;font-size:18px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--orange)}
.faq-icon{
  position:relative;width:20px;height:20px;flex-shrink:0;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--jade);transition:transform .3s ease,background .2s ease;
}
.faq-icon::before{left:0;top:9px;width:20px;height:1.5px}
.faq-icon::after{left:9px;top:0;width:1.5px;height:20px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-item.is-open .faq-icon::before{background:var(--orange)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-a p{
  font-size:16px;line-height:1.9;color:var(--muted);padding:0 44px 24px 0;margin:0;
}

/* CTA 通栏 */
.cta-band{background:var(--ink-deep);color:#E9E6DE;padding:88px 0}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.cta-band h2{color:#fff;font-size:40px;line-height:1.2;margin-bottom:18px}
.cta-band p{color:rgba(233,230,222,.78);font-size:17px;margin:0}
.cta-points{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}
.cta-points span{
  border:1px solid rgba(233,230,222,.28);border-radius:var(--radius-tag);
  padding:6px 12px;font-size:13px;color:rgba(233,230,222,.85);
}
.form-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(233,230,222,.16);
  border-radius:var(--radius-lg);padding:36px 32px;
}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:14px;color:rgba(233,230,222,.72)}
.field input,.field textarea{
  background:rgba(255,255,255,.06);border:1px solid rgba(233,230,222,.25);
  border-radius:var(--radius);padding:13px 16px;color:#fff;font-size:15px;
  transition:border-color .2s ease,background .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(233,230,222,.42)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);background:rgba(255,255,255,.1);
}
.field textarea{min-height:96px;resize:vertical}
.form-card .btn{width:100%;margin-top:6px}
.form-note{font-size:13px;color:rgba(233,230,222,.55);margin:14px 0 0}

/* 页脚 */
.site-footer{background:var(--ink-deep);color:#E9E6DE;padding:76px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px}
.footer-brand .brand-mark{background:rgba(233,230,222,.12);color:#E9E6DE}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(233,230,222,.6)}
.footer-brand p{margin-top:20px;font-size:15px;color:rgba(233,230,222,.7);line-height:1.85;max-width:320px}
.footer-col h3{font-size:16px;color:#fff;margin-bottom:18px;font-family:var(--sans);font-weight:600}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a{font-size:15px;color:rgba(233,230,222,.74);transition:color .2s ease}
.footer-col ul li a:hover{color:var(--orange)}
.footer-col ul li{font-size:15px;color:rgba(233,230,222,.74)}
.qr-box{
  margin-top:18px;width:118px;height:118px;border:1px dashed rgba(233,230,222,.34);
  border-radius:var(--radius);display:grid;place-items:center;text-align:center;
  font-size:13px;color:rgba(233,230,222,.6);line-height:1.6;
}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(233,230,222,.14);
  padding:22px 24px 26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13.5px;color:rgba(233,230,222,.58);
}
.footer-bottom p{margin:0}
.footer-bottom a{color:rgba(233,230,222,.7)}
.footer-bottom a:hover{color:var(--orange)}

/* 动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1279px){
  .banner h1{font-size:52px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .flow-item{border-right:0;padding:32px 28px 24px 0;border-bottom:1px solid var(--line)}
  .flow-item:nth-child(2n){border-right:0}
}
@media (max-width:1023px){
  :root{--section:72px}
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    background:var(--paper);flex-direction:column;align-items:flex-start;
    gap:4px;padding:28px 24px 40px;margin:0;
    border-top:1px solid var(--line);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-link{font-size:20px;padding:14px 0;width:100%;border-bottom:1px solid var(--line-soft)}
  .nav-link.is-active::before{left:auto;right:6px}
  .nav-link::after{display:none}
  .nav-actions{margin-left:auto}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .sc-item,.sc-item.is-flip{grid-template-columns:1fr}
  .sc-item.is-flip .sc-media{order:0}
  .sc-media{min-height:280px}
  .sc-body{padding:38px 32px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .deliver-wrap{grid-template-columns:1fr;gap:40px}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .banner h1{font-size:44px}
  .section-head h2{font-size:34px}
  .cta-band h2{font-size:32px}
}
@media (max-width:767px){
  :root{--section:56px}
  body{font-size:16px;line-height:1.8}
  .container{padding:0 20px}
  .nav-wrap{gap:14px;height:64px}
  .site-header.is-scrolled .nav-wrap{height:58px}
  .nav-links{top:64px}
  .nav-actions .btn-ghost{display:none}
  .brand-text em{display:none}
  .banner{min-height:260px}
  .banner-inner{padding:48px 0 40px}
  .banner h1{font-size:34px;margin:14px 0 16px}
  .banner p.lead{font-size:16px;margin-bottom:26px}
  .banner-actions .btn{width:100%}
  .metrics-grid{grid-template-columns:1fr;gap:16px}
  .section-head h2{font-size:27px}
  .section-head{margin-bottom:36px}
  .sc-body{padding:30px 24px}
  .sc-body h3{font-size:22px}
  .sc-media{min-height:220px}
  .scene-grid{grid-template-columns:1fr;gap:16px}
  .flow-grid{grid-template-columns:1fr}
  .flow-item{padding:26px 0 20px}
  .faq-q{font-size:16.5px;padding:18px 0;line-height:1.6}
  .faq-a p{padding-right:12px}
  .cta-band{padding:64px 0}
  .cta-band h2{font-size:27px}
  .form-card{padding:26px 22px}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .brand-mark{width:34px;height:34px;font-size:17px}
  .brand-text strong{font-size:16px}
  .banner h1{font-size:29px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#10332E;
  --ink-deep:#0A211E;
  --accent:#C25B2E;
  --accent-deep:#A64A22;
  --jade:#2E7D6B;
  --paper:#F6F4EF;
  --card:#FFFFFF;
  --line:#E2DED4;
  --text:#1B1E1C;
  --muted:#6B7069;
  --disabled:#C9C6BE;
  --disabled-text:#8A8880;
  --radius:10px;
  --radius-sm:4px;
  --radius-lg:12px;
  --pill:999px;
  --shadow:0 1px 2px rgba(16,51,46,.06);
  --shadow-hover:0 12px 28px rgba(16,51,46,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --num:"Inter",system-ui,-apple-system,sans-serif;
  --container:1200px;
  --sec-space:112px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit;background:none;border:none;outline:none}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(194,91,46,.18)}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--sec-space) 0}
.section-sm{padding:72px 0}
.section-line{border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.sec-head h2{font-size:40px}
.sec-head .sec-desc{max-width:420px;color:var(--muted);font-size:16px;line-height:1.85}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.08em;color:var(--jade);
  text-transform:none;font-weight:500;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--jade);opacity:.6}
.section-line-top{border-top:1px solid var(--line)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--pill);
  font-size:15px;font-weight:500;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--accent-deep);box-shadow:var(--shadow-hover);transform:translateY(-1px)}
.btn-primary .arrow{transition:transform .2s ease}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-outline{border-color:var(--line);background:var(--card);color:var(--ink)}
.btn-outline:hover{border-color:rgba(16,51,46,.35);box-shadow:var(--shadow)}
.btn-ghost{color:var(--ink);padding:0 12px;position:relative}
.btn-ghost::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.btn-ghost:hover{color:var(--accent)}
.btn-ghost:hover::after{transform:scaleX(1)}
.btn-on-dark{border-color:rgba(246,244,239,.35);color:#F6F4EF;background:transparent}
.btn-on-dark:hover{border-color:#F6F4EF;background:rgba(246,244,239,.08)}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:var(--disabled-text);cursor:not-allowed;box-shadow:none;transform:none}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,51,46,.08)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .24s ease}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:6px;background:var(--ink);color:#F6F4EF;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:18px;font-weight:600;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-family:var(--serif);font-size:19px;color:var(--ink);letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;color:var(--ink);padding:6px 0;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;width:6px;height:6px;border-radius:50%;
  background:var(--accent);transform:translateY(-50%);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--card);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- banner ---------- */
.page-banner{position:relative;height:320px;overflow:hidden;background:var(--ink-deep)}
.page-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(10,33,30,.78) 0%,rgba(10,33,30,.52) 55%,rgba(10,33,30,.36) 100%);
}
.banner-inner{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:44px;color:#F6F4EF}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(246,244,239,.72);margin-bottom:20px}
.breadcrumb a{transition:color .2s ease}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.page-banner h1{color:#fff;font-size:52px;line-height:1.12;letter-spacing:-.02em;max-width:820px}
.page-banner .banner-sub{margin-top:16px;max-width:620px;font-size:17px;line-height:1.85;color:rgba(246,244,239,.86)}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.banner-tag{
  font-size:13px;padding:5px 12px;border-radius:var(--radius-sm);
  background:rgba(246,244,239,.14);color:#F6F4EF;border:1px solid rgba(246,244,239,.22);
}

/* ---------- two column ---------- */
.layout-two{display:grid;grid-template-columns:minmax(0,1fr) 348px;gap:56px;align-items:start}
.layout-two .main-col{min-width:0}

/* ---------- steps ---------- */
.step-list{border-top:1px solid var(--line)}
.step{
  display:grid;grid-template-columns:96px minmax(0,1fr);gap:28px;
  padding:30px 0;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.step:hover{background:rgba(46,125,107,.04)}
.step-num{
  font-family:var(--num);font-size:34px;font-weight:600;line-height:1.1;
  color:#EDE9DF;-webkit-text-stroke:1px rgba(16,51,46,.34);
}
.step h3{font-size:23px;margin-bottom:10px}
.step p{color:var(--muted);font-size:16px;max-width:640px}
.step .step-meta{margin-top:14px;font-size:14px;color:var(--jade);letter-spacing:.02em}

/* ---------- sticky summary ---------- */
.summary-card{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
}
.summary-card h3{font-size:20px;margin-bottom:6px}
.summary-card .summary-note{font-size:14px;color:var(--muted);margin-bottom:20px}
.summary-list li{
  display:flex;justify-content:space-between;gap:16px;
  padding:12px 0;border-top:1px solid var(--line);font-size:15px;
}
.summary-list li:last-child{border-bottom:1px solid var(--line)}
.summary-list .k{color:var(--muted);flex-shrink:0}
.summary-list .v{color:var(--ink);text-align:right;font-weight:500}
.summary-card .btn{width:100%;margin-top:22px}
.summary-foot{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- metrics ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.metric{padding:30px 26px;border-right:1px solid var(--line)}
.metric:last-child{border-right:none}
.metric .num{font-family:var(--num);font-size:36px;font-weight:600;color:var(--ink);line-height:1.1}
.metric .num small{font-size:16px;font-weight:500;margin-left:4px;color:var(--muted)}
.metric .label{margin-top:8px;font-size:15px;color:var(--muted)}

/* ---------- feature rows ---------- */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:52px 0;border-top:1px solid var(--line)}
.feature:first-of-type{border-top:none;padding-top:0}
.feature.reverse .feature-media{order:2}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.feature-tag{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--jade);
  background:rgba(46,125,107,.10);border-radius:var(--radius-sm);padding:5px 10px;margin-bottom:18px;
}
.feature h3{font-size:28px;margin-bottom:14px}
.feature p{color:var(--muted);font-size:16px;margin-bottom:18px}
.tick-list li{position:relative;padding-left:22px;font-size:16px;color:var(--text);margin-bottom:10px;line-height:1.8}
.tick-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--accent);opacity:.85;
}

/* ---------- scope columns ---------- */
.scope-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.scope-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scope-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(16,51,46,.22)}
.scope-card h3{font-size:22px;margin-bottom:16px}
.scope-card ul li{position:relative;padding-left:20px;font-size:16px;margin-bottom:10px;color:var(--text);line-height:1.8}
.scope-card ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--jade);opacity:.7}
.scope-card.alt{background:#FBFAF6}
.scope-card.alt ul li::before{background:var(--muted);opacity:.45}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;text-align:left;cursor:pointer;font-size:18px;font-weight:600;
  font-family:var(--sans);color:var(--ink);transition:color .2s ease;
}
.faq-q:hover{color:var(--accent)}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;transition:transform .25s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:1.6px}
.faq-icon::after{left:7px;top:0;width:1.6px;height:16px}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 0 24px;color:var(--muted);font-size:16px;line-height:1.9;max-width:760px}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink-deep);color:#E9E6DE;padding:88px 0}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) 420px;gap:64px;align-items:start}
.cta-band h2{color:#F6F4EF;font-size:40px;line-height:1.2}
.cta-band .cta-sub{margin-top:18px;font-size:16px;color:rgba(233,230,222,.78);max-width:460px}
.cta-points{margin-top:32px;display:grid;gap:12px}
.cta-points li{position:relative;padding-left:22px;font-size:15px;color:rgba(233,230,222,.82)}
.cta-points li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--accent)}
.form-card{background:rgba(246,244,239,.05);border:1px solid rgba(246,244,239,.18);border-radius:var(--radius);padding:30px}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:14px;color:rgba(233,230,222,.8);margin-bottom:8px}
.form-row input,.form-row textarea{
  width:100%;background:rgba(246,244,239,.06);border:1px solid rgba(246,244,239,.22);
  border-radius:var(--radius-sm);padding:12px 14px;color:#F6F4EF;font-size:15px;
  transition:border-color .2s ease,background .2s ease;
}
.form-row input::placeholder,.form-row textarea::placeholder{color:rgba(233,230,222,.45)}
.form-row input:focus,.form-row textarea:focus{border-color:var(--accent);background:rgba(246,244,239,.10)}
.form-row textarea{min-height:96px;resize:vertical;line-height:1.7}
.form-tip{font-size:13px;color:rgba(233,230,222,.6);margin-top:14px;line-height:1.7}
.form-msg{font-size:14px;color:var(--accent);margin-top:12px;min-height:20px}
.form-card .btn{width:100%}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:#E9E6DE;padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand .brand-text strong{color:#F6F4EF}
.footer-brand .brand-text em{color:rgba(233,230,222,.6)}
.footer-brand .brand-mark{background:rgba(246,244,239,.12);color:#F6F4EF}
.footer-brand p{margin-top:20px;font-size:15px;color:rgba(233,230,222,.72);max-width:320px;line-height:1.9}
.footer-col h3{font-size:16px;color:#F6F4EF;margin-bottom:18px;font-family:var(--sans);font-weight:600;letter-spacing:.02em}
.footer-col ul li{margin-bottom:12px;font-size:15px;color:rgba(233,230,222,.74)}
.footer-col ul li a{transition:color .2s ease}
.footer-col ul li a:hover{color:var(--accent)}
.qr-box{
  margin-top:18px;width:112px;height:112px;border:1px dashed rgba(233,230,222,.35);
  border-radius:var(--radius);display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:13px;line-height:1.6;color:rgba(233,230,222,.6);
}
.footer-bottom{
  border-top:1px solid rgba(233,230,222,.14);
  padding:24px 24px 32px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:14px;color:rgba(233,230,222,.6);
}
.footer-bottom a{color:rgba(233,230,222,.72)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--sec-space:96px}
  .layout-two{grid-template-columns:minmax(0,1fr) 320px;gap:40px}
  .page-banner h1{font-size:46px}
}
@media (max-width:1023px){
  :root{--sec-space:76px}
  .nav-links{
    position:fixed;left:0;right:0;top:64px;bottom:0;z-index:110;
    flex-direction:column;align-items:flex-start;gap:0;
    background:var(--paper);padding:24px 24px 96px;
    transform:translateX(100%);transition:transform .28s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{font-size:20px;width:100%;padding:18px 0;border-bottom:1px solid var(--line)}
  .nav-link.is-active::before{left:auto;right:0}
  .nav-toggle{display:flex}
  .nav-actions .btn-ghost{display:none}
  .layout-two{grid-template-columns:1fr;gap:40px}
  .summary-card{position:static}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:none}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .feature{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .feature.reverse .feature-media{order:0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px}
  .sec-head h2{font-size:32px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .cta-band h2{font-size:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .page-banner{height:280px}
  .page-banner h1{font-size:38px}
}
@media (max-width:767px){
  :root{--sec-space:60px}
  body{font-size:16px;line-height:1.85}
  .container{padding:0 20px}
  .nav-actions{gap:8px}
  .nav-actions .btn-primary{padding:0 14px;font-size:13px;height:38px}
  .brand-text em{display:none}
  .page-banner{height:260px}
  .page-banner h1{font-size:32px;max-width:100%}
  .page-banner .banner-sub{font-size:15px}
  .banner-inner{padding-bottom:32px}
  .sec-head h2{font-size:27px}
  .step{grid-template-columns:1fr;gap:12px;padding:24px 0}
  .step-num{font-size:28px}
  .step h3{font-size:21px}
  .feature h3{font-size:23px}
  .scope-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:none;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:none}
  .faq-q{font-size:17px;padding:18px 0}
  .cta-band{padding:60px 0}
  .form-card{padding:22px}
  .form-card .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;padding:20px 20px 28px}
  .breadcrumb{font-size:13px;flex-wrap:wrap}
  .feature-media img{aspect-ratio:16/10}
}
@media (max-width:480px){
  .page-banner h1{font-size:28px}
  .brand-text strong{font-size:17px}
  .btn{padding:0 18px;font-size:14px}
  .banner-tag{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}