/* roulang page: index */
:root{
  --ink:#123B33;
  --ink-2:#1E5C4E;
  --terra:#C0592F;
  --terra-2:#E08A5F;
  --paper:#F6F2EA;
  --paper-2:#EFE8DB;
  --dark:#10231F;
  --footer-bg:#0E1F1B;
  --text:#1B1A17;
  --muted:#5C574E;
  --line:#D8CFC0;
  --copper:#A9885C;
  --s1:8px;
  --s2:16px;
  --s3:24px;
  --s4:40px;
  --r-card:14px;
  --r-btn:6px;
  --r-big:20px;
  --shadow-1:0 1px 2px rgba(18,59,51,.06);
  --shadow-2:0 14px 30px -18px rgba(18,59,51,.28);
  --serif:"Noto Serif SC","Songti SC","STSong",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::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:16.5px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,transform .18s ease}
a:hover{color:var(--terra)}
button{font-family:inherit;font-size:inherit;cursor:pointer;background:none;border:0}
h1,h2,h3,h4,h5{font-family:var(--serif);font-weight:600;color:var(--ink);margin:0;letter-spacing:.01em;line-height:1.25}
p{margin:0 0 var(--s2)}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--terra);outline-offset:2px}
section[id],div[id].anchor{scroll-margin-top:96px}

/* ---------- Foundation 基础覆盖 ---------- */
.grid-container{
  width:100%;
  max-width:1240px;
  margin-left:auto;
  margin-right:auto;
  padding-left:32px;
  padding-right:32px;
}
.grid-x.gutter{margin-left:-14px;margin-right:-14px}
.grid-x.gutter>.cell{padding-left:14px;padding-right:14px}
.grid-x{display:flex;flex-flow:row wrap}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:500;line-height:1.3;letter-spacing:.02em;
  border:1px solid transparent;text-align:center;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--terra);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover,.btn-primary:focus{background:#a94a25;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink);color:var(--paper)}
.btn-dark{background:var(--ink);color:var(--paper)}
.btn-dark:hover{background:var(--ink-2);color:#fff}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14.5px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:500;color:var(--ink);
}
.link-arrow .arw{transition:transform .18s ease}
.link-arrow:hover{color:var(--terra)}
.link-arrow:hover .arw{transform:translateX(2px)}

.tag-kicker{
  font-family:var(--num);font-size:12px;font-weight:600;letter-spacing:.18em;
  text-transform:uppercase;color:var(--copper);
}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  border:1px solid var(--line);background:transparent;
  font-size:12px;font-weight:500;color:var(--ink);line-height:1.6;
}
.badge-solid{background:var(--terra);border-color:var(--terra);color:#fff}
.badge-soft{background:rgba(18,59,51,.06);border-color:transparent;color:var(--ink)}
.rule{height:1px;background:var(--line);border:0;margin:0}

.section{padding:104px 0;position:relative}
.section-alt{background:var(--paper-2)}
.section-head{margin-bottom:var(--s4);max-width:820px}
.section-head h2{font-size:clamp(26px,2.6vw,36px);margin-bottom:var(--s2)}
.section-head p{color:var(--muted);margin:0;max-width:640px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--s3);flex-wrap:wrap}
.section-head-row .section-head{margin-bottom:var(--s3)}
.eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.eyebrow::before{content:"";width:3px;height:18px;background:var(--terra);display:block}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.meta{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.brand-bar{height:68px;display:flex;align-items:center;border-bottom:1px solid transparent}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s3);width:100%;height:100%}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--ink)}
.brand-text em{
  font-family:var(--num);font-style:normal;font-size:10px;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--copper);margin-top:4px;
}
.brand-actions{display:flex;align-items:center;gap:var(--s3)}
.brand-note{font-size:13.5px;color:var(--muted);white-space:nowrap}
.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.icon-btn:hover{border-color:var(--terra);color:var(--terra);background:#fff}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);align-items:center;justify-content:center;color:var(--ink)}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.channel-bar{background:var(--paper-2);border-top:1px solid var(--line);transition:height .2s ease}
.channel-inner{display:flex;align-items:stretch;gap:var(--s4);height:50px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel{
  display:inline-flex;align-items:center;position:relative;white-space:nowrap;
  font-size:14.5px;font-weight:500;color:var(--muted);padding:0 2px;
  border-bottom:2px solid transparent;transition:color .18s ease,border-color .18s ease;
}
.channel:hover{color:var(--ink)}
.channel.is-active{color:var(--ink);border-bottom-color:var(--terra)}
.site-header.is-compact .channel-bar{height:auto}
.site-header.is-compact .channel-inner{height:44px}
.site-header.is-compact{border-bottom:1px solid var(--line)}

.nav-drawer{
  position:fixed;inset:68px 0 auto 0;z-index:75;
  background:var(--paper);border-bottom:1px solid var(--line);
  padding:8px 20px 24px;transform:translateY(-12px);
  opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;
  box-shadow:0 20px 40px -30px rgba(18,59,51,.5);
}
.nav-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
.nav-drawer a{
  display:flex;align-items:center;height:52px;font-size:15.5px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.nav-drawer a.is-active{color:var(--terra)}
.nav-drawer .btn{margin-top:18px;width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:72px 0 88px;overflow:hidden;
  background:var(--paper);
}
.hero::before{
  content:"";position:absolute;right:-120px;top:-60px;width:520px;height:680px;
  border:1px solid var(--line);border-radius:300px 300px 0 0;opacity:.65;pointer-events:none;
}
.hero-inner{position:relative;min-height:620px;align-items:center}
.hero-copy{max-width:600px;position:relative;z-index:2}
.hero h1{
  font-size:clamp(34px,4.4vw,52px);line-height:1.18;margin:0 0 var(--s3);
  letter-spacing:.01em;
}
.hero h1 .hl{color:var(--ink-2)}
.hero-sub{font-size:17px;color:var(--muted);margin-bottom:var(--s4);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:var(--s4)}
.trust-row{display:flex;flex-wrap:wrap;gap:var(--s3);border-top:1px solid var(--line);padding-top:var(--s3)}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.trust-dot{width:6px;height:6px;border-radius:2px;background:var(--terra);flex:0 0 auto}
.hero-visual{position:relative}
.hero-figure{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-2)}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3.15}
.hero-stat{
  position:absolute;right:-14px;bottom:-22px;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-card);padding:18px 22px;
  box-shadow:var(--shadow-2);max-width:230px;
}
.hero-stat .num{
  font-family:var(--num);font-size:36px;font-weight:600;line-height:1;
  color:var(--ink);display:block;letter-spacing:-.01em;
}
.hero-stat .num small{font-size:14px;font-weight:500;margin-left:4px;color:var(--terra)}
.hero-stat p{margin:8px 0 0;font-size:13px;color:var(--muted);line-height:1.6}

/* ---------- 锚点快捷条 ---------- */
.quickbar{
  position:sticky;top:118px;z-index:60;
  background:rgba(246,242,234,.94);
  backdrop-filter:blur(6px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.quickbar-inner{display:flex;align-items:center;gap:10px;height:58px;overflow-x:auto;scrollbar-width:none}
.quickbar-inner::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);
  font-size:13.5px;color:var(--muted);background:#fff;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.chip:hover{color:var(--ink);border-color:var(--ink)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- 卖点区 ---------- */
.sell-grid{align-items:stretch}
.sell-main{display:flex;flex-direction:column;overflow:hidden}
.sell-main-img{position:relative;overflow:hidden}
.sell-main-img img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease}
.sell-main:hover .sell-main-img img{transform:scale(1.02)}
.sell-body{padding:var(--s3) var(--s3) 28px}
.sell-body h3{font-size:22px;margin:10px 0 12px}
.sell-body p{color:var(--muted);margin:0;font-size:15.5px}
.sell-num{font-family:var(--num);font-size:13px;font-weight:600;letter-spacing:.18em;color:var(--copper)}
.sell-side{display:flex;flex-direction:column;gap:28px;height:100%}
.sell-mini{padding:26px;flex:1;display:flex;flex-direction:column}
.sell-mini .ico{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--terra);margin-bottom:14px;
}
.sell-mini h3{font-size:20px;margin:0 0 10px}
.sell-mini p{color:var(--muted);font-size:15px;margin:0}

/* ---------- 演示区（深色） ---------- */
.demo{background:var(--dark);color:#EDE6D8}
.demo h2,.demo h3{color:#F6F2EA}
.demo .eyebrow::before{background:var(--terra-2)}
.demo .tag-kicker{color:var(--terra-2)}
.demo-figure{border-radius:var(--r-card);overflow:hidden;border:1px solid rgba(216,207,192,.18)}
.demo-figure img{width:100%;object-fit:cover;aspect-ratio:4/3.2}
.demo-copy p{color:#C7C0B3;font-size:15.5px}
.demo-steps{margin-top:var(--s3);display:flex;flex-direction:column;gap:0}
.demo-step{display:flex;gap:18px;padding:20px 0;border-top:1px solid rgba(216,207,192,.16)}
.demo-step:last-child{border-bottom:1px solid rgba(216,207,192,.16)}
.demo-step .n{
  font-family:var(--num);font-size:22px;font-weight:600;color:var(--terra-2);
  line-height:1;letter-spacing:.02em;flex:0 0 auto;min-width:34px;
}
.demo-step b{display:block;font-size:16px;font-weight:500;color:#F6F2EA;margin-bottom:4px}
.demo-step span{font-size:14px;color:#B4ADA0;line-height:1.7}

/* ---------- 证据区 ---------- */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s3);padding-bottom:var(--s4);border-bottom:1px solid var(--line)}
.stat-item{border-left:1px solid var(--line);padding-left:18px}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-item .num{font-family:var(--num);font-size:40px;font-weight:600;color:var(--ink);line-height:1;letter-spacing:-.02em}
.stat-item .num small{font-size:15px;font-weight:500;margin-left:3px;color:var(--terra)}
.stat-item .lb{display:block;font-size:13px;color:var(--muted);margin-top:10px}
.logo-wall{
  display:grid;grid-template-columns:repeat(5,1fr);gap: var(--s2);
  padding:var(--s4) 0;border-bottom:1px solid var(--line);
}
.logo-cell{
  display:flex;align-items:center;justify-content:center;height:64px;
  border:1px solid var(--line);border-radius:10px;background:#fff;
  font-family:var(--serif);font-size:15px;color:var(--ink);
  opacity:.55;transition:opacity .18s ease,transform .18s ease;
}
.logo-cell:hover{opacity:1;transform:translateY(-2px)}
.case-card{overflow:hidden;height:100%;display:flex;flex-direction:column}
.case-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.case-body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1}
.case-body h3{font-size:19px;margin:12px 0 10px}
.case-body p{color:var(--muted);font-size:15px;margin:0 0 18px;flex:1}
.case-body .link-arrow{font-size:14px}

/* ---------- 价格区 ---------- */
.price-grid{align-items:stretch}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 26px 28px;display:flex;flex-direction:column;height:100%;position:relative;
  transition:transform .18s ease,box-shadow .18s ease;
}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.price-card.is-featured{background:var(--ink);border-color:var(--ink);color:#EDE6D8}
.price-card.is-featured h3,.price-card.is-featured .p-name{color:#F6F2EA}
.price-card.is-featured .p-desc,.price-card.is-featured .p-note{color:#B4ADA0}
.price-card.is-featured .p-list li{color:#DED7C9}
.price-card.is-featured .p-divider{background:rgba(216,207,192,.2)}
.p-flag{position:absolute;top:-13px;left:26px;background:var(--terra);color:#fff;border-radius:999px;padding:4px 14px;font-size:12px;font-weight:500;letter-spacing:.04em}
.p-name{font-family:var(--serif);font-size:20px;color:var(--ink);margin:0 0 6px}
.p-desc{font-size:13.5px;color:var(--muted);margin:0 0 18px}
.p-price{display:flex;align-items:flex-end;gap:6px;margin-bottom:6px}
.p-price .cur{font-family:var(--num);font-size:18px;font-weight:600;color:var(--ink);line-height:1.6}
.price-card.is-featured .p-price .cur,.price-card.is-featured .p-price .val{color:#F6F2EA}
.p-price .val{font-family:var(--num);font-size:40px;font-weight:600;line-height:1;letter-spacing:-.02em;color:var(--ink)}
.p-price .per{font-size:13px;color:var(--muted);padding-bottom:5px}
.price-card.is-featured .p-price .per{color:#B4ADA0}
.p-divider{height:1px;background:var(--line);margin:20px 0}
.p-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text);margin-bottom:12px;line-height:1.65}
.p-list li .chk{flex:0 0 auto;color:var(--terra);margin-top:4px}
.p-note{font-size:13px;color:var(--muted);margin:18px 0 0;text-align:center}
.price-foot{font-size:13px;color:var(--muted);margin-top:var(--s3);text-align:center}

/* ---------- 最新动态 ---------- */
.news-grid{align-items:stretch}
.news-lead{display:block;overflow:hidden;height:100%;color:var(--text)}
.news-lead:hover{color:var(--text)}
.news-lead-thumb{position:relative;background:linear-gradient(135deg,#E8E0D0,#D9CEBA);aspect-ratio:16/9;display:flex;align-items:flex-end;padding:16px}
.news-lead-thumb .badge{background:rgba(246,242,234,.94);border-color:transparent;color:var(--ink)}
.news-lead-body{padding:24px 26px 28px}
.news-lead-body h3{font-size:22px;margin-bottom:10px}
.news-lead-body p{color:var(--muted);font-size:15px;margin-bottom:16px}
.news-list{display:flex;flex-direction:column;gap:18px;height:100%}
.news-item{display:flex;gap:18px;padding:16px;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;transition:transform .18s ease,box-shadow .18s ease}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.news-thumb{
  flex:0 0 96px;width:96px;height:96px;border-radius:10px;overflow:hidden;
  background:linear-gradient(135deg,#E8E0D0,#D5C9B4);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--num);font-size:12px;letter-spacing:.18em;color:#8C8271;
}
.news-item-body{min-width:0;display:flex;flex-direction:column;justify-content:center}
.news-item-body h3{font-size:16.5px;line-height:1.45;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item-body .meta{margin-top:2px}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--paper-2);
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:24px;
}
.empty-state p{margin:0;font-size:15px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-side{position:sticky;top:96px}
.faq-side h2{font-size:clamp(26px,2.6vw,34px);margin-bottom:14px}
.faq-side p{color:var(--muted);font-size:15.5px;margin-bottom:20px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item:hover{border-color:#C7BCA8}
.faq-item.is-open{box-shadow:var(--shadow-1);border-color:#C7BCA8}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;text-align:left;font-size:17px;font-weight:500;color:var(--ink);line-height:1.5;
}
.faq-q:hover{color:var(--terra)}
.faq-icon{position:relative;width:14px;height:14px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--terra);transition:transform .2s ease,opacity .2s ease}
.faq-icon::before{left:0;top:6px;width:14px;height:2px}
.faq-icon::after{left:6px;top:0;width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:rotate(45deg);opacity:.35}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:0 22px 18px;color:var(--muted);font-size:16px;line-height:1.85}
.faq-a-inner p{margin:0}

/* ---------- 底部 CTA ---------- */
.cta-block{
  background:var(--ink);border-radius:var(--r-big);padding:56px 56px;color:#EDE6D8;
  display:flex;align-items:center;justify-content:space-between;gap:var(--s4);
  position:relative;overflow:hidden;
}
.cta-block::after{
  content:"";position:absolute;right:-60px;bottom:-140px;width:340px;height:340px;
  border:1px solid rgba(216,207,192,.18);border-radius:200px 200px 0 0;
}
.cta-block h2{color:#F6F2EA;font-size:clamp(26px,2.6vw,34px);margin-bottom:12px}
.cta-block p{color:#BDB6A8;margin:0;font-size:15.5px;max-width:520px}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;position:relative;z-index:2}
.cta-block .link-arrow{color:#E5DECD}
.cta-block .link-arrow:hover{color:var(--terra-2)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:#CFC8B9;padding:72px 0 0;margin-top:104px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:var(--s4)}
.footer-brand .brand-text strong{color:#F6F2EA}
.footer-brand .brand-text em{color:var(--copper)}
.footer-brand p{color:#9B9486;font-size:14px;margin:18px 0 16px;max-width:300px;line-height:1.8}
.footer-contact{font-size:14px;color:#CFC8B9}
.footer-contact a{color:#E5DECD}
.footer-contact a:hover{color:var(--terra-2)}
.footer-col h4{
  font-family:var(--num);font-size:13px;font-weight:600;letter-spacing:.18em;
  text-transform:uppercase;color:var(--copper);margin:0 0 18px;
}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#CFC8B9;display:inline-block;transition:color .18s ease,transform .18s ease}
.footer-col a:hover{color:var(--terra-2);transform:translateX(2px)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(216,207,192,.16);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8B8477;
}
.footer-bottom a{color:#8B8477}
.footer-bottom a:hover{color:var(--terra-2)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border-radius:999px;background:var(--terra);color:#fff;
  font-size:14.5px;font-weight:500;box-shadow:0 10px 24px -12px rgba(192,89,47,.7);
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,background-color .18s ease;
}
.float-cta.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.float-cta:hover{background:#a94a25;color:#fff;transform:translateY(-2px)}
.mobile-cta-bar{display:none}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  .hero::before{opacity:.4}
}
@media screen and (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px}
  .section{padding:80px 0}
  .site-footer{margin-top:80px}
  .brand-note{display:none}
  .hero{padding:52px 0 70px}
  .hero-inner{min-height:auto}
  .hero-copy{max-width:none;margin-bottom:var(--s4)}
  .hero-stat{right:8px;bottom:-18px;max-width:200px;padding:14px 16px}
  .hero-stat .num{font-size:30px}
  .quickbar{top:68px}
  .cta-block{padding:44px 32px;flex-direction:column;align-items:flex-start}
  .stat-bar{grid-template-columns:repeat(2,1fr);gap:var(--s3) var(--s2)}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-side{position:static}
}
@media screen and (max-width:1023px){
  .channel-bar{display:none}
  .nav-toggle{display:inline-flex}
  .brand-actions{gap:12px}
  .brand-actions .btn-sm{display:none}
}
@media screen and (max-width:767px){
  body{font-size:16px}
  .grid-container{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  .site-footer{margin-top:56px;padding-top:52px}
  .hero{padding:40px 0 56px}
  .hero h1{font-size:clamp(30px,8vw,38px);margin-bottom:18px}
  .hero-sub{font-size:16px;margin-bottom:28px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto;min-width:150px}
  .trust-row{gap:14px 20px}
  .hero-stat{position:static;margin-top:18px;max-width:none;display:flex;align-items:center;gap:16px}
  .hero-stat p{margin:0}
  .sell-body{padding:22px 20px 24px}
  .sell-mini{padding:20px}
  .news-item{gap:14px;padding:14px}
  .news-thumb{flex:0 0 78px;width:78px;height:78px}
  .news-lead-body{padding:20px}
  .cta-block{padding:34px 22px;border-radius:16px}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .float-cta{display:none}
  .mobile-cta-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;
    height:60px;align-items:center;justify-content:space-between;gap:12px;
    padding:0 16px;background:rgba(14,31,27,.97);border-top:1px solid rgba(216,207,192,.18);
  }
  .mobile-cta-bar span{font-size:13px;color:#CFC8B9}
  .mobile-cta-bar .btn{padding:9px 16px;min-height:40px;font-size:14px}
  body{padding-bottom:72px}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a-inner{padding:0 18px 16px;font-size:15.5px}
  .quickbar{top:68px}
  .quickbar-inner{height:54px}
}
@media screen and (max-width:519px){
  .brand-text strong{font-size:15px}
  .brand-text em{font-size:9px;letter-spacing:.14em}
  .stat-item .num{font-size:32px}
  .logo-wall{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .price-card{padding:26px 20px 24px}
}

/* roulang page: article */
:root{
  --green:#123B33;
  --green-2:#1E5C4E;
  --terra:#C0592F;
  --terra-2:#E08A5F;
  --paper:#F6F2EA;
  --paper-2:#EFE8DB;
  --dark:#10231F;
  --footer-bg:#0E1F1B;
  --ink:#1B1A17;
  --muted:#5C574E;
  --line:#D8CFC0;
  --copper:#A9885C;
  --radius-card:14px;
  --radius-btn:6px;
  --radius-big:20px;
  --shadow-1:0 1px 2px rgba(18,59,51,.06);
  --shadow-2:0 14px 30px -18px rgba(18,59,51,.28);
  --font-serif:'Noto Serif SC','Songti SC',serif;
  --font-sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-num:'Inter','Noto Sans SC',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;letter-spacing:.01em;color:var(--green)}
p{margin:0}
a{color:var(--green);text-decoration:none}
a:hover{color:var(--terra)}
img{max-width:100%;display:block}
button{font-family:inherit}
ul{list-style:none;margin:0;padding:0}
[id]{scroll-margin-top:96px}
.grid-container{max-width:1240px;width:100%;padding-left:32px;padding-right:32px;margin:0 auto}
@media (max-width:1023px){.grid-container{padding-left:24px;padding-right:24px}}
@media (max-width:639px){.grid-container{padding-left:20px;padding-right:20px}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;line-height:1.2;border:1px solid transparent;
  cursor:pointer;transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-primary{background:var(--terra);color:#fff;border-color:var(--terra)}
.btn-primary:hover{background:#A9491F;color:#fff}
.btn-ghost{background:transparent;color:var(--green);border-color:var(--green)}
.btn-ghost:hover{background:rgba(18,59,51,.06);color:var(--green)}
.btn-sm{min-height:38px;padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--terra);outline-offset:2px;
}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--green);font-weight:500;transition:gap .18s ease,color .18s ease}
.text-link:hover{gap:10px;color:var(--terra)}
.text-link .arrow{transition:transform .18s ease}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);border-bottom:1px solid transparent}
.brand-row{height:68px;display:flex;align-items:center}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--green)}
.brand:hover{color:var(--green)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--line);border-radius:10px;background:var(--green);flex:0 0 38px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--green);letter-spacing:.01em}
.brand-text em{font-style:normal;font-family:var(--font-num);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--copper)}
.brand-actions{display:flex;align-items:center;gap:18px}
.icon-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:50%;background:transparent;color:var(--green);cursor:pointer;transition:border-color .18s ease,color .18s ease}
.icon-btn:hover{border-color:var(--terra);color:var(--terra)}
.lang{font-size:14px;color:var(--muted)}
.phone{font-family:var(--font-num);font-size:14px;letter-spacing:.06em;color:var(--green)}
.phone:hover{color:var(--terra)}
.hamburger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:8px;background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.hamburger span{display:block;width:18px;height:1.6px;background:var(--green);transition:transform .18s ease}

.channel-bar{background:var(--paper-2);border-top:1px solid var(--line);transition:box-shadow .2s ease}
.channel-inner{display:flex;align-items:center;gap:4px;height:50px;overflow-x:auto;transition:height .2s ease;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel{position:relative;display:inline-flex;align-items:center;height:100%;padding:0 15px;font-size:14.5px;color:var(--muted);white-space:nowrap;transition:color .18s ease}
.channel:hover{color:var(--green)}
.channel.is-active{color:var(--green);font-weight:500}
.channel.is-active::after{content:"";position:absolute;left:15px;right:15px;bottom:0;height:2px;background:var(--terra)}
.site-header.is-scrolled .channel-inner{height:44px}
.site-header.is-scrolled{border-bottom:1px solid var(--line);box-shadow:var(--shadow-1)}

.drawer-mask{position:fixed;inset:0;background:rgba(16,35,31,.42);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:90}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);background:var(--paper);z-index:100;transform:translateX(102%);transition:transform .24s ease;padding:18px 20px 32px;overflow-y:auto;display:flex;flex-direction:column;gap:4px}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:8px}
.drawer-title{font-family:var(--font-serif);font-size:17px;color:var(--green)}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:50%;background:transparent;font-size:20px;line-height:1;color:var(--green);cursor:pointer}
.drawer-link{display:flex;align-items:center;height:52px;padding:0 4px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer-link.is-active{color:var(--terra);font-weight:500}
.drawer-cta{margin-top:20px}

@media (max-width:1023px){
  .brand-actions .icon-btn,.brand-actions .lang,.brand-actions .phone,.brand-actions .btn-sm{display:none}
  .hamburger{display:inline-flex}
  .channel-bar{display:none}
}

/* ---------- breadcrumb ---------- */
.crumb-wrap{padding-top:34px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--terra)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--muted);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-main{padding-bottom:96px}
.article-head{max-width:820px;margin:0 auto;padding:26px 0 0}
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;border:1px solid rgba(192,89,47,.36);background:rgba(192,89,47,.08);color:var(--terra);font-size:12px;letter-spacing:.06em}
.badge-solid{background:var(--terra);color:#fff;border-color:var(--terra)}
.article-head h1{font-size:clamp(32px,4vw,40px);line-height:1.28;margin:18px 0 16px;letter-spacing:0}
.article-lede{font-size:18px;line-height:1.8;color:var(--muted);margin-bottom:20px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);padding-bottom:26px;border-bottom:1px solid var(--line)}
.article-meta .dot{color:var(--line)}

.article-cover{max-width:1080px;margin:34px auto 0}
.article-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:16px;background:var(--paper-2)}
.article-cover figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:12px}

/* ---------- article layout ---------- */
.article-grid{gap:56px;margin-top:52px}
.article-grid > .cell{padding-left:0;padding-right:0}
.article-col{min-width:0}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--ink);text-align:left}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 22px}
.article-body h2{
  font-size:28px;line-height:1.35;margin:44px 0 18px;padding-left:16px;position:relative;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.34em;width:3px;height:18px;background:var(--terra)}
.article-body h3{font-size:22px;line-height:1.4;margin:32px 0 14px}
.article-body h4{font-size:18px;margin:26px 0 12px;color:var(--green)}
.article-body strong{font-weight:500;color:var(--green)}
.article-body blockquote{
  margin:28px 0;padding:20px 22px;background:var(--paper-2);border-left:3px solid var(--terra);
  border-radius:0 12px 12px 0;color:var(--muted);font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul{margin:0 0 22px;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;line-height:1.8}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;background:var(--terra)}
.article-body ol{margin:0 0 22px;padding-left:22px}
.article-body ol li{margin-bottom:10px;line-height:1.8}
.article-body img{border-radius:14px;margin:26px auto;width:100%;height:auto}
.article-body figure{margin:26px 0}
.article-body figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15.5px}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;height:48px}
.article-body th{background:var(--paper-2);color:var(--green);font-weight:500}
.article-body a{color:var(--green-2);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--terra)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--paper-2);border:1px dashed var(--line);border-radius:var(--radius-card);padding:36px 24px;text-align:center;
}
.empty-state p{font-size:15px;color:var(--muted)}

/* ---------- article footer blocks ---------- */
.article-foot{max-width:760px;margin-top:44px}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-row .label{font-size:13px;color:var(--muted);margin-right:2px}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--green);font-size:13px;transition:border-color .18s ease,color .18s ease,background-color .18s ease}
.tag:hover{border-color:var(--terra);color:var(--terra);background:rgba(192,89,47,.06)}
.foot-divider{border:0;border-top:1px solid var(--line);margin:34px 0}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.post-nav-item{
  display:flex;flex-direction:column;gap:8px;padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:#fff;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-nav-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--copper)}
.pn-label{font-family:var(--font-num);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--copper)}
.post-nav-item strong{font-family:var(--font-serif);font-size:16px;line-height:1.55;color:var(--green);font-weight:600}
.pn-next{text-align:right;align-items:flex-end}
@media (max-width:639px){.post-nav{grid-template-columns:1fr}.pn-next{text-align:left;align-items:flex-start}}

.rel-block{margin-top:56px}
.rel-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.rel-head h2{font-size:clamp(22px,2.2vw,28px)}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .18s ease,box-shadow .18s ease;height:100%;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rel-card .rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card h3{font-size:17px;line-height:1.55;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .rel-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-top:auto}
@media (max-width:1023px){.rel-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:599px){.rel-grid{grid-template-columns:1fr}}

.back-row{display:flex;justify-content:flex-start;margin-top:36px}

/* ---------- sidebar ---------- */
.sidebar-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-1)}
.side-card h3{font-size:15px;font-family:var(--font-sans);font-weight:500;color:var(--green);letter-spacing:.04em;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;background:var(--terra);display:inline-block}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto}
.toc-list a{display:block;padding:7px 10px;border-left:2px solid transparent;font-size:14px;line-height:1.6;color:var(--muted);transition:color .16s ease,border-color .16s ease,background-color .16s ease}
.toc-list a:hover{color:var(--green);background:var(--paper)}
.toc-list a.is-active{color:var(--terra);border-left-color:var(--terra);background:rgba(192,89,47,.06)}
.side-links{display:flex;flex-direction:column;gap:14px}
.side-links a{font-size:14.5px;line-height:1.65;color:var(--ink);display:block;transition:color .16s ease,transform .16s ease}
.side-links a:hover{color:var(--terra);transform:translateX(2px)}
.side-links .side-meta{display:block;font-size:12.5px;color:var(--muted);margin-top:4px}
.sub-form{display:flex;flex-direction:column;gap:10px}
.sub-form label{font-size:13px;color:var(--muted)}
.sub-form input[type="email"]{
  height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--paper);font-size:15px;color:var(--ink);width:100%;transition:border-color .18s ease;
}
.sub-form input[type="email"]:focus{border-color:var(--terra);outline:none;box-shadow:0 0 0 2px rgba(192,89,47,.18)}
.sub-form .hint{font-size:12.5px;color:var(--muted)}
.side-note{font-size:13px;color:var(--muted);line-height:1.75}
@media (max-width:1023px){
  .sidebar-col{display:none}
  .article-grid{gap:0}
  .article-body{max-width:100%}
}

/* ---------- consult strip ---------- */
.consult{
  background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:52px 0;margin-top:72px;
}
.consult-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.consult h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.consult p{font-size:15.5px;color:var(--muted);max-width:620px}
.consult-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);color:#EFE8DB;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text strong{color:#F6F2EA}
.footer-brand .brand-text em{color:var(--copper)}
.footer-brand .brand-mark{background:transparent;border-color:rgba(246,242,234,.22)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(246,242,234,.72);max-width:320px}
.footer-contact{margin-top:18px;font-size:13.5px;color:rgba(246,242,234,.62);line-height:1.9}
.footer-contact a{color:rgba(246,242,234,.86)}
.footer-contact a:hover{color:var(--terra-2)}
.footer-col h4{font-family:var(--font-num);font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--copper);margin-bottom:16px;font-weight:500}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:rgba(246,242,234,.78);transition:color .16s ease,transform .16s ease;display:inline-block}
.footer-col a:hover{color:var(--terra-2);transform:translateX(2px)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(246,242,234,.14);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,242,234,.55);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:599px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:48px 0 88px}
}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;display:flex;align-items:center;gap:8px;
  background:var(--dark);border-radius:999px;padding:8px;box-shadow:0 18px 34px -18px rgba(16,35,31,.55);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta:hover{transform:translateY(-2px)}
.float-btn{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 18px;border-radius:999px;font-size:14px;font-weight:500;color:#F6F2EA;transition:background-color .18s ease,color .18s ease}
.float-ghost:hover{background:rgba(246,242,234,.12);color:#F6F2EA}
.float-main{background:var(--terra);color:#fff}
.float-main:hover{background:#A9491F;color:#fff}
.float-tip{display:none;font-size:13px;color:rgba(246,242,234,.78);padding-left:12px}
@media (max-width:1023px){
  body{padding-bottom:72px}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;padding:0 16px;height:60px;justify-content:space-between;
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:none}
  .float-cta:hover{transform:none}
  .float-tip{display:block}
  .float-ghost{display:none}
  .float-main{height:38px;padding:0 20px;font-size:13.5px}
}

/* roulang page: category1 */
:root{
  --ink:#123B33;
  --ink-2:#1E5C4E;
  --terra:#C0592F;
  --terra-soft:#E08A5F;
  --paper:#F6F2EA;
  --paper-alt:#EFE8DB;
  --deep:#10231F;
  --footer-bg:#0E1F1B;
  --text:#1B1A17;
  --muted:#5C574E;
  --line:#D8CFC0;
  --copper:#A9885C;
  --serif:'Noto Serif SC','Songti SC',Georgia,serif;
  --sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --mono:'Inter','Helvetica Neue',Arial,sans-serif;
  --r-card:14px;
  --r-btn:6px;
  --r-big:20px;
  --sh-1:0 1px 2px rgba(18,59,51,.06);
  --sh-2:0 14px 30px -18px rgba(18,59,51,.28);
}
*,*::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:16.5px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  margin:0;
  font-family:var(--serif);
  font-weight:600;
  color:var(--ink);
  line-height:1.25;
  letter-spacing:.01em;
}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease;}
img{display:block;max-width:100%;height:auto;border-radius:var(--r-card);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--terra);outline-offset:2px;}
[id]{scroll-margin-top:96px;}

/* 容器 */
.grid-container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:13px 26px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:500;
  line-height:1;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--terra);color:#fff;}
.btn-primary:hover{background:#a84c26;color:#fff;}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:rgba(18,59,51,.07);color:var(--ink);}
.btn-sm{padding:10px 18px;min-height:40px;font-size:14px;}
.btn-block{width:100%;}
.btn .arrow{transition:transform .18s ease;display:inline-block;}
.btn:hover .arrow{transform:translateX(2px);}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:44px;
  color:var(--ink);
  font-size:15px;
  font-weight:500;
}
.btn-link .arrow{transition:transform .18s ease;}
.btn-link:hover{color:var(--terra);}
.btn-link:hover .arrow{transform:translateX(2px);}

/* 头部 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.brand-bar{background:var(--paper);}
.brand-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:11px;}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:9px;
  background:var(--ink);
  flex:0 0 36px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.brand-text em{font-family:var(--mono);font-style:normal;font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);}
.brand-tools{display:flex;align-items:center;gap:20px;}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:8px;color:var(--ink);
  transition:background-color .18s ease,color .18s ease;
}
.icon-btn:hover{background:var(--paper-alt);color:var(--terra);}
.lang-pill{font-size:14px;color:var(--muted);letter-spacing:.02em;}
.phone-link{font-family:var(--mono);font-size:14px;letter-spacing:.06em;color:var(--ink);}
.phone-link:hover{color:var(--terra);}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:8px;align-items:center;justify-content:center;color:var(--ink);}

.channel-bar{
  background:var(--paper-alt);
  border-top:1px solid var(--line);
  transition:height .2s ease;
}
.channel-inner{display:flex;align-items:center;gap:34px;height:50px;transition:height .2s ease;}
.channel{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:50px;
  font-size:15px;
  color:var(--muted);
  white-space:nowrap;
  transition:height .2s ease,color .18s ease;
}
.channel:hover{color:var(--ink);}
.channel.is-active{color:var(--ink);font-weight:500;}
.channel.is-active::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--terra);
}
.site-header.is-scrolled .channel-inner,
.site-header.is-scrolled .channel{height:44px;}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,59,51,.35);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:78;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:min(88vw,360px);
  background:var(--paper);
  z-index:80;
  transform:translateX(105%);
  transition:transform .28s ease;
  box-shadow:-14px 0 40px -20px rgba(18,59,51,.4);
  display:flex;flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:68px;padding:0 20px;border-bottom:1px solid var(--line);flex:0 0 68px;
}
.drawer-title{font-family:var(--serif);font-size:16px;font-weight:600;color:var(--ink);}
.drawer-close{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;color:var(--ink);}
.drawer-close:hover{background:var(--paper-alt);}
.drawer-nav{padding:0 20px;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--terra);font-weight:500;}
.drawer-foot{padding:22px 20px 30px;margin-top:auto;}
.drawer-tip{font-size:13px;color:var(--muted);margin-bottom:14px;}

/* 频道头 */
.channel-hero{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  padding:60px 0 44px;
  position:relative;
  overflow:hidden;
}
.channel-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(169,136,92,.05) 0 1px,transparent 1px 12px);
  opacity:.5;
  pointer-events:none;
}
.channel-hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  align-items:center;
  gap:40px;
  min-height:220px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--copper);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:3px;height:18px;background:var(--terra);border-radius:1px;}
.channel-hero h1{
  font-size:clamp(32px,4vw,44px);
  line-height:1.18;
  color:var(--ink);
}
.channel-hero .lead{
  margin-top:16px;
  font-size:18px;
  line-height:1.7;
  color:var(--muted);
  max-width:560px;
}
.arch-deco{display:flex;justify-content:center;align-items:center;}
.arch-deco svg{width:100%;max-width:260px;height:auto;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.55);
  font-size:13px;
  color:var(--ink);
  letter-spacing:.02em;
}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--terra);flex:0 0 6px;}

/* 板块通用 */
.section{padding:104px 0;}
.section-alt{background:var(--paper-alt);}
.section-deep{background:var(--deep);color:#EFE8DB;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:40px;
  margin-bottom:48px;
}
.section-head h2{font-size:clamp(26px,2.6vw,36px);}
.section-deep .section-head h2{color:#F6F2EA;}
.section-head .head-note{
  max-width:380px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.section-deep .section-head .head-note{color:#BFCFC9;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* 模块卡 */
.module-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
}
.module-card{
  grid-column:span 6;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease;
  display:flex;flex-direction:column;
}
.module-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.module-card.span-4{grid-column:span 4;}
.module-index{
  font-family:var(--mono);
  font-size:12px;font-weight:600;letter-spacing:.18em;
  color:var(--copper);
  margin-bottom:18px;
}
.module-card h3{font-size:22px;margin-bottom:12px;}
.module-card p{font-size:15.5px;line-height:1.8;color:var(--muted);}
.module-list{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.module-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--text);
  line-height:1.7;
}
.module-list li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:6px;height:6px;background:var(--terra);border-radius:1px;
}

/* 对照表 */
.table-wrap{
  margin-top:48px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.table-title{
  padding:22px 28px;
  font-family:var(--serif);
  font-size:18px;
  color:var(--ink);
  border-bottom:1px solid var(--line);
  background:var(--paper-alt);
}
.cap-table{width:100%;border-collapse:collapse;margin:0;}
.cap-table th,.cap-table td{
  padding:0 28px;
  border-bottom:1px solid var(--line);
  text-align:left;
  font-size:15px;
}
.cap-table thead th{
  height:48px;
  font-family:var(--sans);
  font-weight:500;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--muted);
  background:rgba(239,232,219,.5);
}
.cap-table tbody td{height:52px;color:var(--text);}
.cap-table tbody tr:last-child td{border-bottom:0;}
.cap-table tbody tr:hover{background:rgba(239,232,219,.42);}
.cap-table td:first-child{font-weight:500;color:var(--ink);}
.mark-yes{color:var(--terra);font-weight:500;}
.mark-part{color:var(--copper);}

/* 场景 */
.scene{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:40px;
  align-items:center;
  padding:44px 0;
  border-top:1px solid var(--line);
}
.scene:first-of-type{border-top:0;padding-top:0;}
.scene-media{grid-column:span 6;}
.scene-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--line);
}
.scene-body{grid-column:span 6;}
.scene-body .tag{
  display:inline-flex;
  align-items:center;
  padding:5px 13px;
  border:1px solid var(--terra);
  border-radius:999px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--terra);
  margin-bottom:16px;
}
.scene-body h3{font-size:26px;line-height:1.3;margin-bottom:14px;}
.scene-body p{font-size:15.5px;line-height:1.85;color:var(--muted);}
.scene-points{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.scene-points li{
  position:relative;padding-left:18px;
  font-size:14.5px;line-height:1.75;color:var(--text);
}
.scene-points li::before{
  content:"";position:absolute;left:0;top:10px;
  width:8px;height:1.5px;background:var(--terra);
}
.scene.reverse .scene-media{order:2;}
.scene.reverse .scene-body{order:1;}

/* 流程 */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border-top:1px solid rgba(246,242,234,.22);
}
.flow-step{
  padding:32px 26px 8px 0;
  border-right:1px solid rgba(246,242,234,.16);
  position:relative;
}
.flow-step:last-child{border-right:0;}
.flow-num{
  font-family:var(--mono);
  font-size:36px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--terra-soft);
  line-height:1;
  margin-bottom:18px;
}
.flow-step h3{
  font-size:19px;
  color:#F6F2EA;
  margin-bottom:10px;
}
.flow-step p{
  font-size:14.5px;
  line-height:1.8;
  color:#BFCFC9;
}
.flow-step::after{
  content:"";
  position:absolute;top:26px;left:0;
  width:26px;height:2px;
  background:var(--terra);
}

/* FAQ */
.faq-wrap{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:28px;
}
.faq-aside{grid-column:span 4;}
.faq-main{grid-column:span 8;}
.faq-aside h2{font-size:clamp(26px,2.6vw,34px);margin-bottom:16px;}
.faq-aside p{font-size:15px;line-height:1.85;color:var(--muted);max-width:320px;}
.faq-aside .btn-link{margin-top:18px;}
.faq-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.accordion{background:transparent;border:0;margin:0;}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.accordion-item:last-child{border-bottom:0;}
.accordion-title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 26px;
  font-family:var(--sans);
  font-size:17px;
  font-weight:500;
  color:var(--ink);
  border:0;
  background:transparent;
  transition:color .18s ease,background-color .18s ease;
}
.accordion-title::before{display:none !important;}
.accordion-title:hover{color:var(--terra);background:rgba(239,232,219,.4);}
.accordion-item.is-active .accordion-title{color:var(--ink);}
.faq-icon{
  position:relative;
  width:14px;height:14px;flex:0 0 14px;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--terra);
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;top:6.2px;width:14px;height:1.6px;}
.faq-icon::after{left:6.2px;top:0;width:1.6px;height:14px;}
.accordion-item.is-active .faq-icon::after{transform:rotate(90deg);opacity:0;}
.accordion-content{
  padding:0 26px 20px;
  border:0 !important;
  background:transparent !important;
  color:var(--muted);
}
.accordion-content p{font-size:16px;line-height:1.85;}

/* 底部 CTA */
.cta-block{
  background:var(--deep);
  border-radius:var(--r-big);
  padding:64px 56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
  position:relative;
  overflow:hidden;
}
.cta-block::before{
  content:"";
  position:absolute;right:-60px;top:-40px;
  width:280px;height:280px;
  border:1px solid rgba(169,136,92,.35);
  border-radius:999px 999px 0 0;
  pointer-events:none;
}
.cta-text{position:relative;}
.cta-text h2{color:#F6F2EA;font-size:clamp(26px,2.6vw,34px);margin-bottom:14px;}
.cta-text p{color:#BFCFC9;font-size:16px;line-height:1.8;max-width:520px;}
.cta-actions{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:12px;flex:0 0 auto;}
.cta-actions .btn-link{color:#E08A5F;}
.cta-actions .btn-link:hover{color:#F6F2EA;}

/* 浮动 CTA */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  display:flex;
  align-items:center;
  gap:0;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-tip{display:none;}
.float-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 22px;
  border-radius:999px;
  background:var(--ink);
  color:#F6F2EA;
  font-size:14px;
  font-weight:500;
  box-shadow:var(--sh-2);
  transition:background-color .18s ease,transform .18s ease;
}
.float-btn:hover{background:var(--ink-2);color:#fff;transform:translateY(-2px);}

/* 页脚 */
.site-footer{background:var(--footer-bg);color:#DCD6C8;padding:72px 0 0;margin-top:0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-mark{background:transparent;border:1px solid rgba(246,242,234,.28);}
.footer-brand .brand-text strong{color:#F6F2EA;}
.footer-brand .brand-text em{color:#8FA39C;}
.footer-brand p{font-size:14px;line-height:1.85;color:#A9B7B1;max-width:320px;}
.footer-contact{margin-top:20px;font-size:14px;line-height:1.9;color:#A9B7B1;}
.footer-contact a{color:#E08A5F;}
.footer-contact a:hover{color:#F6F2EA;}
.footer-col h4{
  font-family:var(--mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--copper);
  margin-bottom:20px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{
  display:inline-block;
  font-size:14px;
  color:#C7D0CB;
  transition:color .18s ease,transform .18s ease;
}
.footer-col a:hover{color:var(--terra-soft);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(216,207,192,.18);
  padding:24px 0 30px;
  display:flex;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8FA39C;
}

/* 响应式 */
@media screen and (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .brand-tools .lang-pill,
  .brand-tools .phone-link{display:none;}
  .channel-inner{gap:24px;overflow-x:auto;scrollbar-width:none;}
  .channel-inner::-webkit-scrollbar{display:none;}
  .channel-hero{padding:48px 0 36px;}
  .channel-hero-inner{grid-template-columns:minmax(0,1fr);gap:28px;min-height:0;}
  .arch-deco{display:none;}
  .section{padding:80px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px;}
  .module-card,
  .module-card.span-4{grid-column:span 6;}
  .scene{grid-template-columns:1fr;gap:24px;padding:36px 0;}
  .scene-media,.scene-body{grid-column:span 12;}
  .scene.reverse .scene-media{order:0;}
  .scene.reverse .scene-body{order:0;}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-step{border-right:0;border-bottom:1px solid rgba(246,242,234,.16);padding-bottom:26px;}
  .flow-step:nth-child(odd){padding-right:26px;}
  .faq-aside,.faq-main{grid-column:span 12;}
  .cta-block{padding:44px 32px;flex-direction:column;align-items:flex-start;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media screen and (max-width:767px){
  .brand-tools .icon-btn{display:none;}
  .menu-toggle{display:inline-flex;}
  .brand-tools .btn-sm{display:none;}
  .cap-table th,.cap-table td{padding:0 16px;font-size:14px;}
  .cap-table thead th{height:44px;font-size:12px;}
  .table-title{padding:18px 16px;font-size:16px;}
}

@media screen and (max-width:639px){
  body{padding-bottom:76px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .brand-inner{height:64px;}
  .channel-inner{height:46px;gap:20px;}
  .channel{height:46px;font-size:14px;}
  .channel-hero{padding:40px 0 32px;}
  .channel-hero h1{font-size:30px;}
  .channel-hero .lead{font-size:16px;}
  .chip-row{gap:8px;margin-top:24px;}
  .chip{font-size:12px;padding:7px 13px;}
  .section{padding:56px 0;}
  .module-grid{grid-template-columns:1fr;gap:16px;}
  .module-card,
  .module-card.span-4{grid-column:span 1;padding:22px;}
  .module-card h3{font-size:19px;}
  .section-head h2{font-size:25px;}
  .flow-grid{grid-template-columns:1fr;}
  .flow-step{padding:26px 0 22px;border-right:0;}
  .flow-num{font-size:30px;margin-bottom:12px;}
  .scene-body h3{font-size:21px;}
  .cta-block{padding:36px 22px;border-radius:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .accordion-title{padding:18px 18px;font-size:15.5px;}
  .accordion-content{padding:0 18px 18px;}
  .accordion-content p{font-size:15px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:36px;}
  .footer-brand{grid-column:span 2;}
  .site-footer{padding-top:52px;}
  .footer-bottom{flex-direction:column;gap:8px;font-size:12.5px;}
  .float-cta{
    left:0;right:0;bottom:0;
    height:60px;
    padding:0 13px;
    justify-content:space-between;
    background:var(--paper);
    border-top:1px solid var(--line);
    transform:translateY(100%);
    box-shadow:0 -6px 20px -14px rgba(18,59,51,.4);
  }
  .float-cta.is-visible{transform:translateY(0);}
  .float-tip{display:block;font-size:13px;color:var(--muted);}
  .float-btn{padding:11px 18px;font-size:14px;box-shadow:none;}
}

/* roulang page: category2 */
:root{
  --forest:#123B33;
  --forest-light:#1E5C4E;
  --terracotta:#C0592F;
  --terracotta-light:#E08A5F;
  --paper:#F6F2EA;
  --paper-alt:#EFE8DB;
  --dark:#10231F;
  --footer-bg:#0E1F1B;
  --text:#1B1A17;
  --muted:#5C574E;
  --line:#D8CFC0;
  --copper:#A9885C;
  --radius-card:14px;
  --radius-btn:6px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(18,59,51,.06);
  --shadow-2:0 14px 30px -18px rgba(18,59,51,.28);
  --container:1240px;
  --sec-space:104px;
}

/* ===== 基础重置 ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  margin:0;
  font-family:"Noto Serif SC","Songti SC",Georgia,serif;
  font-weight:600;
  color:var(--forest);
  letter-spacing:.01em;
  line-height:1.25;
}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--forest);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--terracotta);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--terracotta);outline-offset:2px;}
[id]{scroll-margin-top:96px;}

/* ===== 容器 ===== */
.grid-container{
  max-width:var(--container);
  padding-left:32px;
  padding-right:32px;
  margin-left:auto;
  margin-right:auto;
}
.grid-x > .cell{padding-left:0;padding-right:0;}
.grid-margin-x{margin-left:-14px;margin-right:-14px;}
.grid-margin-x > .cell{padding-left:14px;padding-right:14px;}

/* ===== 通用板块 ===== */
.section{padding:var(--sec-space) 0;}
.section-alt{background:var(--paper-alt);}
.section-head{margin-bottom:40px;}
.section-head h2{font-size:clamp(26px,2.6vw,36px);line-height:1.25;}
.section-head p{margin-top:12px;font-size:16.5px;color:var(--muted);max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:"Inter","Noto Sans SC",sans-serif;
  font-size:12px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--copper);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:3px;height:18px;background:var(--terracotta);border-radius:2px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 26px;
  font-family:"Noto Sans SC",sans-serif;font-size:15px;font-weight:500;line-height:1.2;
  border-radius:var(--radius-btn);border:1px solid transparent;
  text-decoration:none;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--terracotta);color:#fff;}
.btn-primary:hover{background:#a94c26;color:#fff;transform:translateX(2px);}
.btn-ghost{background:transparent;border-color:var(--forest);color:var(--forest);}
.btn-ghost:hover{background:rgba(18,59,51,.07);color:var(--forest);transform:translateX(2px);}
.btn-sm{min-height:38px;padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn .arrow{display:inline-block;transition:transform .18s ease;}
.btn:hover .arrow{transform:translateX(3px);}
.button{background:var(--terracotta);border-radius:var(--radius-btn);font-family:"Noto Sans SC",sans-serif;}
.button:hover{background:#a94c26;}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.brand-bar{background:var(--paper);transition:box-shadow .2s ease;}
.site-header.is-scrolled .brand-bar{box-shadow:var(--shadow-1);}
.brand-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand-mark{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{
  font-family:"Noto Serif SC",serif;font-size:18px;font-weight:700;
  color:var(--forest);letter-spacing:.01em;white-space:nowrap;
}
.brand-text em{
  font-family:"Inter",sans-serif;font-style:normal;font-size:10.5px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--copper);
}
.brand-actions{display:flex;align-items:center;gap:20px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid transparent;
  background:transparent;display:inline-flex;align-items:center;justify-content:center;
  color:var(--forest);cursor:pointer;padding:0;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.icon-btn:hover{background:var(--paper-alt);border-color:var(--line);color:var(--forest);}
.lang{font-size:14px;color:var(--muted);white-space:nowrap;}
.lang strong{color:var(--forest);font-weight:500;}
.phone-link{
  font-family:"Inter","Noto Sans SC",sans-serif;font-size:14px;letter-spacing:.04em;
  color:var(--forest);text-decoration:none;white-space:nowrap;
}
.phone-link:hover{color:var(--terracotta);}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;border:1px solid var(--line);
  border-radius:var(--radius-btn);background:transparent;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--forest);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg);}

.channel-bar{background:var(--paper-alt);border-top:1px solid var(--line);}
.channel-inner{
  display:flex;align-items:center;gap:6px;flex-wrap:nowrap;
  min-height:50px;overflow-x:auto;scrollbar-width:none;
  transition:min-height .2s ease;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel{
  position:relative;display:inline-flex;align-items:center;
  height:50px;padding:0 16px;white-space:nowrap;
  font-size:15px;color:var(--muted);text-decoration:none;
  transition:color .18s ease,height .2s ease;
}
.channel:hover{color:var(--forest);}
.channel.is-active{color:var(--forest);font-weight:500;}
.channel.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;
  background:var(--terracotta);border-radius:2px 2px 0 0;
}
.site-header.is-scrolled .channel-inner{min-height:44px;}
.site-header.is-scrolled .channel{height:44px;}

/* ===== 移动抽屉 ===== */
.drawer{position:fixed;inset:0;z-index:90;display:none;}
.drawer.is-open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(16,35,31,.45);}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(320px,86vw);height:100%;
  background:var(--paper);padding:20px;overflow-y:auto;
  box-shadow:-18px 0 40px -24px rgba(16,35,31,.5);
  display:flex;flex-direction:column;
}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:12px;margin-bottom:8px;border-bottom:1px solid var(--line);
  font-family:"Inter","Noto Sans SC",sans-serif;font-size:12px;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--copper);
}
.drawer-close{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  background:transparent;color:var(--forest);font-size:20px;line-height:1;
  cursor:pointer;padding:0;display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:var(--paper-alt);}
.drawer-link{
  display:flex;align-items:center;height:52px;
  border-bottom:1px solid var(--line);
  color:var(--forest);text-decoration:none;font-size:16px;
}
.drawer-link:hover{color:var(--terracotta);}
.drawer-link.is-active{color:var(--terracotta);font-weight:500;}
.drawer-cta{margin-top:24px;}

/* ===== 频道头 ===== */
.channel-hero{
  position:relative;
  padding:72px 0 56px;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-title{
  font-size:clamp(32px,4vw,44px);
  line-height:1.2;
  margin-bottom:16px;
  max-width:660px;
}
.hero-lead{
  font-size:18px;
  line-height:1.7;
  color:var(--muted);
  max-width:560px;
  margin:0;
}
.arch-deco{display:flex;justify-content:center;align-items:center;}
.arch-deco svg{width:100%;max-width:280px;height:auto;opacity:.9;}
.stat-chips{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:40px;
}
.stat-chips li{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 18px;border:1px solid var(--line);border-radius:999px;
  background:rgba(255,255,255,.6);
  font-family:"Inter","Noto Sans SC",sans-serif;
  font-size:13px;font-weight:500;letter-spacing:.04em;color:var(--forest);
}
.stat-chips li::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--terracotta);flex:0 0 auto;
}

/* ===== 徽章 / 元信息 ===== */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  font-size:12px;font-weight:500;letter-spacing:.04em;
  color:var(--forest);white-space:nowrap;
  margin-bottom:14px;
}
.badge-accent{
  background:var(--terracotta);border-color:var(--terracotta);
  color:#fff;
}
.meta-row{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);margin-top:16px;
}
.meta-row .dot{color:var(--line);}

/* ===== 主打卡片 ===== */
.lead-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.lead-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.lead-media{
  margin:0;width:100%;aspect-ratio:16/9;overflow:hidden;
  border-radius:var(--radius-card);background:var(--paper-alt);
}
.lead-media img{width:100%;height:100%;object-fit:cover;}
.lead-body h2{font-size:clamp(24px,2.2vw,30px);line-height:1.3;margin-bottom:16px;}
.lead-body p{font-size:16px;line-height:1.8;color:var(--muted);margin-bottom:12px;}
.lead-body .btn{margin-top:8px;}

/* ===== 场景卡片网格 ===== */
.topic-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px;
  margin-top:40px;
}
.topic-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.topic-media{
  margin:0;aspect-ratio:4/3;overflow:hidden;background:var(--paper-alt);
}
.topic-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.topic-card:hover .topic-media img{transform:scale(1.03);}
.topic-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.topic-body h3{
  font-size:20px;line-height:1.4;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.topic-body p{
  font-size:15px;line-height:1.75;color:var(--muted);margin-bottom:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.topic-body .meta-row{margin-top:auto;padding-top:14px;}

/* ===== 安装步骤 ===== */
.step-list{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:40px;
  margin-top:8px;
}
.step-item{position:relative;padding-top:26px;border-top:1px solid var(--line);}
.step-item::before{
  content:"";position:absolute;top:-1px;left:0;
  width:3px;height:18px;background:var(--terracotta);border-radius:2px;
}
.step-num{
  display:block;
  font-family:"Inter",sans-serif;font-size:34px;font-weight:600;
  letter-spacing:.06em;line-height:1;color:var(--copper);
  margin-bottom:16px;
}
.step-item h3{font-size:21px;line-height:1.4;margin-bottom:10px;}
.step-item p{font-size:15px;line-height:1.8;color:var(--muted);margin:0;}

/* ===== FAQ ===== */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside{position:sticky;top:96px;}
.faq-aside h2{font-size:clamp(26px,2.6vw,34px);margin-bottom:14px;}
.faq-aside p{font-size:16px;color:var(--muted);margin-bottom:20px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:500;color:var(--terracotta);text-decoration:none;
  transition:transform .18s ease,color .18s ease;
}
.link-more:hover{color:#a94c26;transform:translateX(2px);}
.accordion{border:0;background:transparent;margin:0;}
.accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:#fff;margin-bottom:12px;overflow:hidden;
  box-shadow:var(--shadow-1);
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;margin:0;
  font-family:"Noto Sans SC",sans-serif;font-size:17px;font-weight:500;line-height:1.5;
  color:var(--forest);background:transparent;border:0;
  transition:color .18s ease;
}
.accordion-title:hover{color:var(--terracotta);}
.accordion-title::before{display:none!important;background:none!important;content:none!important;}
.accordion-title::after{
  content:"+";flex:0 0 auto;
  font-family:"Inter",sans-serif;font-size:22px;line-height:1;color:var(--terracotta);
  transition:transform .2s ease;
}
.accordion-item.is-active .accordion-title::after{transform:rotate(45deg);}
.accordion-content{
  padding:0 22px 20px;border:0;background:transparent;
  font-size:16px;line-height:1.85;color:var(--muted);
}
.accordion-content p{font-size:16px;line-height:1.85;color:var(--muted);margin:0;}

/* ===== 相关频道 ===== */
.related-list{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px;margin-top:8px;
}
.related-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:24px 26px;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:transparent;
  color:var(--forest);text-decoration:none;
  transition:border-color .18s ease,transform .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.related-card:hover{
  border-color:var(--terracotta);transform:translateY(-3px);
  background:#fff;color:var(--forest);box-shadow:var(--shadow-2);
}
.related-card strong{display:block;font-size:17px;font-weight:500;line-height:1.5;}
.related-card small{display:block;font-size:13px;color:var(--muted);margin-top:4px;}
.related-card .arrow{font-family:"Inter",sans-serif;font-size:18px;color:var(--terracotta);flex:0 0 auto;}

/* ===== 底部 CTA ===== */
.cta-band{
  background:var(--dark);
  border-radius:var(--radius-lg);
  padding:64px 56px;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-120px;
  width:320px;height:320px;border-radius:50%;
  border:1px solid rgba(246,242,234,.14);
  pointer-events:none;
}
.cta-band h2{
  color:var(--paper);font-size:clamp(26px,2.8vw,36px);
  line-height:1.25;margin-bottom:14px;max-width:620px;
}
.cta-band p{color:rgba(246,242,234,.76);font-size:16.5px;line-height:1.8;max-width:560px;margin-bottom:28px;}
.cta-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;position:relative;z-index:2;}
.cta-actions .link-light{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--paper);text-decoration:none;font-size:15px;font-weight:500;
  transition:color .18s ease,transform .18s ease;
}
.cta-actions .link-light:hover{color:var(--terracotta-light);transform:translateX(2px);}

/* ===== 页脚 ===== */
.site-footer{background:var(--footer-bg);color:var(--paper);padding:72px 0 28px;margin-top:var(--sec-space);}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:48px;padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:20px;}
.footer-brand .brand-text strong{color:var(--paper);}
.footer-brand .brand-text em{color:var(--copper);}
.footer-brand p{
  font-size:14.5px;line-height:1.8;color:rgba(246,242,234,.68);
  margin-bottom:20px;max-width:340px;
}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(246,242,234,.62);}
.footer-contact a{color:var(--paper);text-decoration:none;}
.footer-contact a:hover{color:var(--terracotta-light);}
.footer-col h4{
  font-family:"Inter","Noto Sans SC",sans-serif;
  font-size:13px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--copper);margin-bottom:20px;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{
  font-size:14px;color:rgba(246,242,234,.72);text-decoration:none;
  transition:color .18s ease,transform .18s ease;display:inline-block;
}
.footer-col ul li a:hover{color:var(--terracotta-light);transform:translateX(2px);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;border-top:1px solid rgba(246,242,234,.14);
  font-size:13px;color:rgba(246,242,234,.5);
}

/* ===== 浮动 CTA ===== */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 22px;border-radius:999px;
  background:var(--forest);color:var(--paper);text-decoration:none;
  font-size:15px;font-weight:500;box-shadow:var(--shadow-2);
  transition:transform .2s ease,background-color .18s ease;
}
.float-btn:hover{transform:translateY(-2px);background:var(--forest-light);color:#fff;}
.mobile-cta-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:60px;padding:0 16px;
  background:var(--paper);border-top:1px solid var(--line);
  align-items:center;justify-content:space-between;gap:12px;
}
.mobile-cta-bar span{font-size:13px;color:var(--muted);line-height:1.4;}
.mobile-cta-bar .btn{min-height:40px;padding:9px 18px;font-size:14px;flex:0 0 auto;}

/* ===== 响应式 ===== */
@media screen and (max-width:1279px){
  :root{--sec-space:88px;}
  .cta-band{padding:56px 44px;}
}

@media screen and (max-width:1023px){
  :root{--sec-space:80px;}
  .grid-container{padding-left:24px;padding-right:24px;}
  .brand-actions{display:none;}
  .nav-toggle{display:flex;}
  .channel-bar{display:none;}
  .brand-text strong{font-size:17px;}
  .channel-hero{padding:56px 0 44px;}
  .arch-deco{display:none;}
  .topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .step-list{grid-template-columns:repeat(1,minmax(0,1fr));gap:28px;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .related-list{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{padding:48px 32px;border-radius:16px;}
  .lead-card{padding:22px;}
}

@media screen and (max-width:767px){
  body{padding-bottom:72px;}
  .float-cta{display:none;}
  .mobile-cta-bar{display:flex;}
  .grid-margin-x{margin-left:-10px;margin-right:-10px;}
  .grid-margin-x > .cell{padding-left:10px;padding-right:10px;}
  .lead-media{margin-bottom:24px;}
  .lead-body h2{margin-top:4px;}
  .cta-actions{gap:16px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

@media screen and (max-width:639px){
  :root{--sec-space:56px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  body{font-size:16px;}
  .brand-inner{min-height:62px;gap:12px;}
  .brand-text strong{font-size:16px;}
  .brand-text em{font-size:9.5px;}
  .brand-mark svg{width:26px;height:26px;}
  .hero-title{font-size:clamp(27px,7.4vw,34px);}
  .hero-lead{font-size:16px;}
  .stat-chips{gap:8px;margin-top:28px;}
  .stat-chips li{font-size:12px;padding:7px 14px;}
  .topic-grid{grid-template-columns:1fr;gap:20px;}
  .topic-body{padding:18px 18px 20px;}
  .step-num{font-size:28px;}
  .accordion-title{font-size:16px;padding:16px 18px;}
  .accordion-content{padding:0 18px 18px;}
  .accordion-content p{font-size:15px;}
  .cta-band{padding:36px 22px;border-radius:14px;}
  .cta-band h2{font-size:24px;}
  .cta-band p{font-size:15.5px;}
  .cta-actions .btn{width:100%;}
  .site-footer{padding:52px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .lead-card{padding:16px;}
  .related-card{padding:20px 18px;}
  .mobile-cta-bar span{font-size:12.5px;}
}