/* roulang page: index */
:root{
  --brand:#FF5A28;
  --brand-hi:#FF6F45;
  --brand-deep:#E8431A;
  --ink:#101418;
  --ink-soft:#1B2126;
  --green:#0E5C4A;
  --warn:#B4801A;
  --error:#C0392B;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E7E2D8;
  --line-strong:#D8D2C4;
  --text:#14181C;
  --text-2:#5A6068;
  --text-3:#8B9099;
  --r-s:12px;
  --r-m:16px;
  --r-l:20px;
  --sh-1:0 1px 2px rgba(16,20,24,.04);
  --sh-2:0 12px 32px -12px rgba(16,20,24,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:260ms;
  --sp:96px;
  --nav-h:64px;
}
*,*::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:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.7;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;height:auto}
a{color:var(--text);text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
a:hover{color:var(--brand)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.25;color:var(--text)}
p{margin:0}
figure{margin:0}
table{border-collapse:collapse;width:100%}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sp) 0}
.section--tight{padding:calc(var(--sp) * .62) 0}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
.grid-margin-y{margin-top:-24px}
.grid-margin-y>.cell{margin-top:24px}

/* ---------- 基础文字模块 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);display:block}
h1{font-size:clamp(32px,5vw,58px)}
h2{font-size:clamp(26px,3.2vw,40px)}
h3{font-size:clamp(19px,1.6vw,23px)}
.lead{font-size:17px;color:var(--text-2);line-height:1.75}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .lead{margin-top:14px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:rgba(14,92,74,.08);color:var(--green);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge--brand{background:rgba(255,90,40,.1);color:var(--brand-deep)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--brand-deep);
}
.text-link span{transition:transform var(--dur) var(--ease);display:inline-block}
.text-link:hover span{transform:translateX(3px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-s);
  font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  border:1px solid transparent;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -10px rgba(255,90,40,.7)}
.btn-primary:hover{background:var(--brand-hi);color:#fff;transform:scale(1.02)}
.btn-primary:active{transform:translateY(1px) scale(1)}
.btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#fff;color:var(--brand-deep)}
.btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-line:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;flex:none;font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--brand);position:relative;flex:none;
  box-shadow:0 6px 14px -8px rgba(255,90,40,.9);
}
.brand-mark::after{
  content:"";position:absolute;left:8px;top:7px;width:12px;height:13px;
  border-left:2.5px solid #fff;border-bottom:2.5px solid #fff;transform:skewX(-14deg);
}
.brand-text{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-links a{
  position:relative;padding:10px 13px;font-size:15px;font-weight:500;color:var(--text-2);
  border-radius:8px;
}
.nav-links a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text);font-weight:700}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 16px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,90,40,.12)}
.search-box svg{flex:none;opacity:.5}
.search-box input{border:0;outline:0;background:transparent;width:158px;font-size:14px}
.search-box input::placeholder{color:var(--text-3)}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:#fff;
}
.nav-burger span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.nav-burger span::before,.nav-burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:56px;bottom:0;z-index:70;
  background:#fff;padding:20px 20px 40px;flex-direction:column;gap:6px;overflow-y:auto;
}
body.nav-open .mobile-drawer{display:flex}
body.nav-open{overflow:hidden}
.mobile-drawer a.drawer-link{
  padding:15px 14px;border-radius:var(--r-s);font-size:16px;font-weight:600;
  border:1px solid transparent;
}
.mobile-drawer a.drawer-link:hover{background:var(--bg);border-color:var(--line)}
.mobile-drawer a.drawer-link.is-active{color:var(--brand-deep);background:rgba(255,90,40,.07)}
.drawer-search{margin:10px 0 6px}
.drawer-search .search-box{width:100%}
.drawer-search .search-box input{width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:#fff;border-bottom:1px solid var(--line);
  padding:68px 0 84px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;right:-160px;top:-160px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,40,.12),rgba(255,90,40,0) 68%);
}
.hero-grid{position:relative;display:flex;align-items:center;gap:56px}
.hero-copy{flex:1 1 54%;min-width:0}
.hero-copy h1{margin-bottom:20px}
.hero-copy .lead{max-width:600px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin:26px 0 30px;
  font-size:13.5px;color:var(--text-2);font-variant-numeric:tabular-nums;
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.85}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px}
.hero-visual{
  flex:1 1 46%;min-width:0;position:relative;border-radius:var(--r-l);overflow:hidden;
  min-height:380px;box-shadow:var(--sh-2);
}
.hero-visual-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
}
.hero-visual-shade{
  position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(16,20,24,.86),rgba(16,20,24,.62));
}
.hero-device{
  position:relative;z-index:2;width:82%;margin:44px auto 0;
  border-radius:var(--r-m) var(--r-m) 0 0;border:1px solid rgba(255,255,255,.18);
  box-shadow:0 24px 50px -20px rgba(0,0,0,.6);
}
.hero-float{
  position:absolute;z-index:3;left:24px;bottom:24px;
  background:#fff;border-radius:var(--r-s);padding:12px 16px;box-shadow:var(--sh-2);
  display:flex;align-items:center;gap:12px;
}
.hero-float b{display:block;font-size:19px;font-variant-numeric:tabular-nums;line-height:1.2}
.hero-float small{color:var(--text-3);font-size:12px}
.pulse{
  width:10px;height:10px;border-radius:50%;background:var(--green);position:relative;flex:none;
}
.pulse::after{
  content:"";position:absolute;inset:-5px;border-radius:50%;border:1px solid rgba(14,92,74,.4);
  animation:ring 2.4s var(--ease) infinite;
}
@keyframes ring{0%{transform:scale(.7);opacity:.9}100%{transform:scale(1.5);opacity:0}}

/* ---------- 价值三点 ---------- */
.value-list{display:flex;flex-direction:column}
.value-row{
  display:flex;align-items:flex-start;gap:36px;
  padding:34px 0;border-top:1px solid var(--line);
}
.value-row:last-child{border-bottom:1px solid var(--line)}
.value-num{
  flex:none;width:118px;font-size:56px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.6px var(--brand);letter-spacing:-.04em;
}
.value-body h3{margin-bottom:8px}
.value-body p{color:var(--text-2);max-width:760px}
.value-row:hover .value-num{color:rgba(255,90,40,.12);-webkit-text-stroke:1.6px var(--brand)}

/* ---------- 截图轮播 ---------- */
.shots-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:20px;box-shadow:var(--sh-1)}
.shots-main{
  position:relative;width:100%;aspect-ratio:16/10;border-radius:var(--r-m);overflow:hidden;
  border:1px solid var(--line);background:var(--bg);
}
.shot{position:absolute;inset:0;opacity:0;transition:opacity 320ms var(--ease)}
.shot.is-active{opacity:1}
.shot img{width:100%;height:100%;object-fit:cover}
.shots-thumbs{display:flex;gap:12px;margin-top:16px}
.shot-thumb{
  flex:1;padding:0;border-radius:var(--r-s);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:var(--bg);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.shot-thumb img{width:100%;height:100%;object-fit:cover}
.shot-thumb:hover{transform:translateY(-2px)}
.shot-thumb.is-active{border-color:var(--brand)}
.shots-dots{display:flex;justify-content:center;gap:8px;margin-top:18px}
.shot-dot{width:9px;height:9px;border-radius:50%;background:var(--line-strong);transition:all var(--dur) var(--ease)}
.shot-dot.is-active{background:var(--brand);width:26px;border-radius:999px}
.shots-caption{margin-top:14px;font-size:13.5px;color:var(--text-3);text-align:center}

/* ---------- 系统要求规格卡 ---------- */
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:26px 24px 22px;height:100%;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong)}
.spec-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.spec-card-head h3{font-size:19px}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px dashed var(--line);
}
.spec-row:last-child{border-bottom:0}
.spec-key{font-size:13px;color:var(--text-3);flex:none}
.spec-val{font-size:14.5px;font-weight:700;text-align:right;font-variant-numeric:tabular-nums}

/* ---------- 评价墙 ---------- */
.review-col{display:flex;flex-direction:column;gap:24px}
.review-col:nth-child(2){padding-top:36px}
.review-col:nth-child(3){padding-top:72px}
.review-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:none;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;color:#fff;background:var(--green);
}
.review-col .cell:nth-child(odd) .avatar,.review-card:nth-child(odd) .avatar{background:var(--green)}
.review-card:nth-child(even) .avatar{background:var(--brand)}
.review-name{font-size:14.5px;font-weight:700}
.stars{color:#E7A21A;font-size:13px;letter-spacing:2px;line-height:1}
.review-text{margin-top:2px;color:var(--text-2);font-size:14.5px;line-height:1.75}

/* ---------- 下载 CTA 区 ---------- */
.download-band{background:var(--ink);color:#fff;padding:var(--sp) 0;position:relative;overflow:hidden}
.download-band::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,40,.22),rgba(255,90,40,0) 70%);
}
.download-band h2{color:#fff}
.download-band .lead{color:rgba(255,255,255,.72);max-width:640px;margin-top:14px}
.dl-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;position:relative;z-index:2}
.safety-note{margin-top:22px;font-size:13px;color:rgba(255,255,255,.6);position:relative;z-index:2}
.qr-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-m);padding:24px;text-align:center;position:relative;z-index:2;
}
.qr{
  width:132px;height:132px;margin:0 auto 16px;border-radius:var(--r-s);background:#fff;
  position:relative;overflow:hidden;
}
.qr::before{
  content:"";position:absolute;inset:14px;opacity:.88;
  background-image:linear-gradient(#101418 2px,transparent 2px),linear-gradient(90deg,#101418 2px,transparent 2px);
  background-size:13px 13px;
}
.qr::after{
  content:"";position:absolute;left:14px;top:14px;width:34px;height:34px;border:5px solid #101418;background:#fff;
}
.qr-card b{display:block;color:#fff;font-size:15px;margin-bottom:6px}
.qr-card small{color:rgba(255,255,255,.62);font-size:12.5px;line-height:1.6;display:block}

/* ---------- 资讯列表 ---------- */
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;height:100%;display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-thumb{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--bg)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-body .badge{align-self:flex-start;margin-bottom:12px}
.news-title{font-size:18px;line-height:1.45;margin-bottom:10px}
.news-summary{
  color:var(--text-2);font-size:14.5px;line-height:1.7;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);padding-top:14px;font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.empty-state{
  background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--r-m);
  padding:56px 24px;text-align:center;
}
.empty-state .empty-mark{
  width:56px;height:56px;margin:0 auto 18px;border-radius:14px;
  border:2px solid var(--line-strong);position:relative;
}
.empty-state .empty-mark::after{
  content:"";position:absolute;left:14px;top:24px;width:24px;height:2px;background:var(--line-strong);
}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:18px}

/* ---------- 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 0 22px 18px;text-align:left;position:relative;
  font-size:17px;font-weight:700;color:var(--text);
  transition:color var(--dur) var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:24px;width:3px;height:22px;border-radius:2px;background:var(--brand);
}
.faq-q:hover{color:var(--brand-deep)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;position:relative;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--text-2)}
.faq-icon::before{width:11px;height:1.6px}
.faq-icon::after{width:1.6px;height:11px;transition:transform var(--dur) var(--ease)}
.faq-item.is-open .faq-icon{background:var(--brand);border-color:var(--brand)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms var(--ease)}
.faq-a-inner{padding:0 40px 24px 18px;color:var(--text-2);font-size:15px;line-height:1.8}

/* ---------- 表单 ---------- */
.contact-form{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:28px;box-shadow:var(--sh-2);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:8px;color:var(--text)}
.field input,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-s);
  background:#fff;font-size:15px;outline:0;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{min-height:120px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,90,40,.12)}
.field.is-error input,.field.is-error textarea{border-color:var(--error);box-shadow:0 0 0 3px rgba(192,57,43,.12)}
.field .hint{display:block;margin-top:6px;font-size:12.5px;color:var(--text-3)}
.form-note{margin-top:14px;font-size:13.5px;color:var(--text-3);min-height:20px}
.form-note.is-ok{color:var(--green);font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:var(--sp)}
.site-footer a{color:rgba(255,255,255,.72)}
.site-footer a:hover{color:var(--brand)}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{width:26px;height:26px;border-radius:8px}
.footer-desc{font-size:14px;line-height:1.8;max-width:320px;color:rgba(255,255,255,.62)}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:11px;font-size:14px}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom span{font-variant-numeric:tabular-nums}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity 480ms var(--ease),transform 480ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  :root{--sp:72px}
  .nav-links,.nav-actions .search-box,.nav-actions .btn{display:none}
  .nav-burger{display:flex}
  .hero-grid{flex-direction:column;gap:40px}
  .hero-copy,.hero-visual{flex:1 1 auto;width:100%}
  .hero{padding:48px 0 64px}
  .hero-visual{min-height:320px}
  .value-num{width:92px;font-size:46px}
  .review-col:nth-child(2),.review-col:nth-child(3){padding-top:0}
  .review-col{margin-bottom:24px}
}
@media screen and (max-width:768px){
  :root{--sp:56px}
  .container{padding:0 18px}
  .brand{font-size:16px}
  .brand-text{white-space:normal;line-height:1.25;font-size:15px}
  .value-row{flex-direction:column;gap:10px;padding:26px 0}
  .value-num{width:auto;font-size:40px}
  .news-summary{-webkit-line-clamp:3}
  .contact-form{padding:22px}
}
@media screen and (max-width:520px){
  :root{--sp:48px;--nav-h:56px}
  .container{padding:0 16px}
  .hero{padding:34px 0 48px}
  .hero-meta{gap:8px 16px}
  .hero-btns .btn{flex:1 1 100%}
  .dl-buttons .btn{flex:1 1 calc(50% - 6px);padding:0 12px;font-size:14px}
  .shots-wrap{padding:12px}
  .faq-q{font-size:16px;padding-right:8px}
  .faq-a-inner{padding-right:8px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --brand:#FF5A28;
  --brand-hover:#FF7043;
  --brand-soft:rgba(255,90,40,.10);
  --ink:#101418;
  --ink-2:#14181C;
  --green:#0E5C4A;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --line:#E7E2D8;
  --t1:#14181C;
  --t2:#5A6068;
  --t3:#8B9099;
  --ok:#0E5C4A;
  --warn:#B4801A;
  --err:#C0392B;
  --r-card:16px;
  --r-img:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(16,20,24,.04);
  --sh2:0 12px 32px -12px rgba(16,20,24,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:240ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  font-weight:400;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;}
button,input{font:inherit;}
h1,h2,h3,h4{letter-spacing:-.02em;margin:0;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1);}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:800;color:var(--ink);
  white-space:nowrap;flex:0 0 auto;
}
.brand-mark{
  position:relative;width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,#FF5A28,#FF8A5C);
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;background:#fff;opacity:.92;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-links a{
  position:relative;display:inline-block;padding:8px 12px;
  font-size:15px;color:var(--t2);border-radius:8px;
  transition:color var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a.is-active{color:var(--ink);font-weight:700;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;width:220px;padding:0 14px;
  background:#F3F0E9;border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.search-box:focus-within{border-color:var(--brand);background:#fff;}
.search-box svg{flex:0 0 auto;opacity:.5;}
.search-box input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:var(--t3);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);cursor:pointer;
}
.nav-toggle span{display:block;position:relative;width:18px;height:2px;border-radius:2px;background:var(--ink);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:700;cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px) scale(1.02);box-shadow:0 10px 24px -12px rgba(255,90,40,.75);}
.btn-primary:active{transform:translateY(0) scale(1);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:#1D2329;transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.32);color:#fff;}
.btn-outline-light:hover{border-color:var(--brand);color:#fff;background:rgba(255,90,40,.14);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

/* ---------- Mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:#fff;
  display:flex;flex-direction:column;padding:20px 20px 32px;
  transform:translateX(100%);visibility:hidden;
  transition:transform 300ms var(--ease),visibility 300ms var(--ease);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:24px;}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);
  font-size:20px;line-height:1;color:var(--ink);cursor:pointer;
}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:48px;padding:0 16px;
  background:#F3F0E9;border:1px solid var(--line);border-radius:var(--r-pill);margin-bottom:20px;
}
.drawer-search input{width:100%;border:0;background:transparent;outline:none;font-size:15px;color:var(--ink);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  padding:16px 4px;font-size:17px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand);}
.mobile-drawer .btn{margin-top:24px;width:100%;}

/* ---------- Breadcrumb ---------- */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:14px 0;font-size:13px;color:var(--t3);
}
.breadcrumb a{color:var(--t2);transition:color var(--dur) var(--ease);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--t3);opacity:.7;}
.breadcrumb .current{
  color:var(--t1);font-weight:600;max-width:56ch;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- Article ---------- */
.article-wrap{padding:48px 0 0;}
.article-head{max-width:760px;margin:0 auto;}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge-green{background:rgba(14,92,74,.10);color:var(--green);}
.article-head h1{
  margin:18px 0 0;
  font-size:clamp(28px,4vw,42px);
  line-height:1.28;font-weight:800;color:var(--ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;padding-bottom:24px;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--t3);
}
.article-meta .num{font-variant-numeric:tabular-nums;}
.dot{width:4px;height:4px;border-radius:50%;background:#CFC9BD;flex:0 0 auto;}
.article-main{max-width:760px;margin:0 auto;padding:36px 0 0;}
.article-body{font-size:17px;line-height:1.9;color:#22272C;word-break:break-word;}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  position:relative;margin:48px 0 18px;padding-left:16px;
  font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.4;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{
  margin:32px 0 12px;font-size:19px;font-weight:700;color:var(--green);line-height:1.5;
}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:700;color:var(--ink);}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(255,90,40,.35);transition:opacity var(--dur) var(--ease);}
.article-body a:hover{opacity:.78;}
.article-body img{border-radius:14px;margin:24px auto;box-shadow:var(--sh1);}
.article-body figure{margin:28px 0;}
.article-body figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--t3);
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  background:#FFFDF9;border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
  color:var(--t2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{list-style:none;padding:0;margin:0 0 1.4em;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.6em;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;
  border-radius:2px;background:var(--brand);
}
.article-body ol{counter-reset:li;}
.article-body ol li{position:relative;padding-left:36px;margin-bottom:.6em;counter-increment:li;}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:0;color:var(--brand);font-weight:800;
  font-variant-numeric:tabular-nums;
}
.article-body table{width:100%;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:10px 14px;text-align:left;
}
.article-body th{background:#F3F0E9;font-weight:700;}
.article-body code{
  padding:2px 6px;background:#F3F0E9;border-radius:6px;
  font-size:14px;font-variant-numeric:tabular-nums;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0;}

.notice{
  display:flex;flex-direction:column;align-items:flex-start;gap:14px;
  padding:32px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);
}
.notice h2{margin:0;font-size:22px;font-weight:800;color:var(--ink);}
.notice p{margin:0;font-size:15px;color:var(--t2);}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  font-size:13px;color:var(--t2);transition:all var(--dur) var(--ease);
}
.tag:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- Sections ---------- */
.section{padding:88px 0 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:28px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;color:var(--ink);}
.section-head p{margin:8px 0 0;font-size:15px;color:var(--t2);}
.link-arrow{
  display:inline-flex;align-items:center;color:var(--brand);
  font-size:14px;font-weight:700;
}
.link-arrow::after{
  content:"→";margin-left:6px;transition:transform var(--dur) var(--ease);
}
.link-arrow:hover::after{transform:translateX(4px);}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#EFEBE2;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:20px;}
.card-body h3{font-size:18px;font-weight:700;line-height:1.45;color:var(--ink);}
.card-body p{
  margin:0;font-size:14px;line-height:1.7;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:6px;font-size:13px;color:var(--t3);
}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  margin-top:72px;padding:52px 48px;
  background:linear-gradient(135deg,#101418 0%,#1C2329 100%);
  border-radius:24px;color:#fff;
  display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,90,40,.42),transparent 70%);
  pointer-events:none;
}
.cta-band h2{position:relative;font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.4;}
.cta-band p{position:relative;margin:12px 0 0;font-size:15px;line-height:1.8;color:rgba(255,255,255,.68);max-width:46ch;}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ---------- Footer ---------- */
.site-footer{margin-top:96px;padding:64px 0 0;background:var(--ink);color:#fff;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.02em;}
.footer-desc{margin:14px 0 0;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:36ch;}
.footer-col h4{margin:0 0 16px;font-size:15px;font-weight:700;color:#fff;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;list-style:none;padding:0;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.64);transition:color var(--dur) var(--ease);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .nav-links,.search-box{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;gap:14px;}
  .brand{font-size:16px;}
  .brand-mark{width:24px;height:24px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
  .cta-actions{justify-content:flex-start;}
  .section{padding:72px 0 0;}
}
@media (min-width:1024px){
  .mobile-drawer{display:none;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{height:56px;}
  .brand{font-size:15px;white-space:normal;line-height:1.25;}
  .breadcrumb .current{max-width:100%;white-space:normal;}
  .article-wrap{padding:32px 0 0;}
  .article-meta{gap:8px;font-size:13px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin-top:36px;}
  .section{padding:48px 0 0;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{margin-top:56px;padding:32px 22px;border-radius:20px;}
  .cta-actions .btn{width:100%;}
  .site-footer{margin-top:64px;padding:48px 0 0;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  :root{--dur:0ms;}
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .card:hover{transform:none;}
  .card:hover .card-media img{transform:none;}
  .btn-primary:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --brand:#FF5A28;
  --brand-dark:#E04A1C;
  --brand-soft:rgba(255,90,40,.10);
  --ink:#101418;
  --pine:#0E5C4A;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E7E2D8;
  --text:#14181C;
  --muted:#5A6068;
  --faint:#8B9099;
  --success:#0E5C4A;
  --warn:#B4801A;
  --danger:#C0392B;
  --r-card:16px;
  --r-img:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,20,24,.04);
  --sh-2:0 12px 32px -12px rgba(16,20,24,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:260ms;
  --sec:96px;
  --container:1200px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--text);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover,a:focus{color:var(--brand);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
input,button{font-size:1rem;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.num,.tabular{font-variant-numeric:tabular-nums;}

/* ---------- 覆盖 Foundation 默认味道 ---------- */
body,.button,.btn,input,select,textarea{font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;}
a{text-decoration:none;}
.button{background:var(--brand);border-radius:var(--r-btn);}
.grid-container,.container{max-width:var(--container);}
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);display:block;}
.section-title{font-size:clamp(26px,3.2vw,40px);line-height:1.25;font-weight:800;letter-spacing:-.02em;}
.section-desc{margin-top:16px;font-size:16px;color:var(--muted);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:scale(1.02);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px) scale(1);}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light:hover{border-color:var(--brand);color:var(--brand);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand);font-size:14px;}
.text-link i{transition:transform var(--dur) var(--ease);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;letter-spacing:.02em;
  background:var(--brand-soft);color:var(--brand);
}
.badge--pine{background:rgba(14,92,74,.10);color:var(--pine);}
.badge--ink{background:rgba(16,20,24,.06);color:var(--ink);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(16,20,24,.35);}
.header-inner{display:flex;align-items:center;gap:22px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:800;font-size:18px;color:var(--ink);letter-spacing:-.02em;}
.brand-text{white-space:nowrap;}
.brand-mark{
  width:22px;height:22px;border-radius:7px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand) 0%,#FF8A5B 100%);
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.65);
}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand) 0%,#FF8A5B 100%);}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;}
.nav-links a{
  position:relative;padding:0 12px;height:64px;display:inline-flex;align-items:center;
  font-size:15px;font-weight:600;color:var(--muted);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:transparent;transition:background-color var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a.is-active{color:var(--ink);font-weight:700;}
.nav-links a.is-active::after{background:var(--brand);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{position:relative;}
.nav-search input{
  width:200px;height:40px;padding:0 38px 0 16px;
  border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--bg);color:var(--text);font-size:14px;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-search input::placeholder{color:var(--faint);}
.nav-search input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px var(--brand-soft);}
.nav-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--faint);font-size:13px;pointer-events:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:17px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:18px 0 26px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-search{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.mobile-drawer .drawer-search input{
  flex:1 1 auto;height:46px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--bg);
}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 4px;border-bottom:1px solid var(--line);
  font-size:16px;font-weight:600;color:var(--ink);
}
.mobile-drawer a.is-active{color:var(--brand);}
.mobile-drawer .drawer-cta{margin-top:18px;}
.drawer-cta .btn{width:100%;}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;background:var(--bg);padding:64px 0 72px;
  border-bottom:1px solid var(--line);
}
.hero-inner{display:flex;align-items:center;gap:48px;}
.hero-copy{flex:1 1 52%;}
.hero-crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--faint);margin-bottom:18px;}
.hero-crumbs a{color:var(--faint);}
.hero-crumbs a:hover{color:var(--brand);}
.hero-crumbs span.sep{color:var(--line);}
.hero-cat h1{
  font-size:clamp(30px,4.2vw,50px);line-height:1.18;font-weight:800;letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero-cat h1 em{font-style:normal;color:var(--brand);}
.hero-cat .lead{font-size:17px;color:var(--muted);max-width:620px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 26px;margin-bottom:30px;font-size:14px;color:var(--muted);}
.hero-meta b{color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-visual{flex:1 1 48%;position:relative;}
.media-frame{
  position:relative;overflow:hidden;border-radius:var(--r-img);
  border:1px solid var(--line);background:#E9E5DC;box-shadow:var(--sh-1);
}
.ratio-16x10{aspect-ratio:16/10;}
.ratio-4x3{aspect-ratio:4/3;}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.media-frame:hover img{transform:scale(1.03);}
.hero-visual .media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,20,24,.24) 0%,rgba(16,20,24,.72) 100%);
}
.hero-chip{
  position:absolute;left:20px;bottom:20px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);color:var(--ink);
  font-size:13px;font-weight:700;box-shadow:var(--sh-2);
}
.hero-chip i{color:var(--brand);}

/* ---------- 指标带 ---------- */
.stats-band{background:var(--ink);padding:56px 0;}
.stats-band .stat{padding:0 4px;}
.stats-band .stat-value{
  font-size:34px;font-weight:800;color:#fff;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stats-band .stat-value span{font-size:16px;font-weight:600;color:rgba(255,255,255,.6);margin-left:4px;}
.stats-band .stat-label{margin-top:8px;font-size:14px;color:rgba(255,255,255,.62);}
.stats-band .divider{width:1px;background:rgba(255,255,255,.14);height:56px;margin:0 auto;}

/* ---------- 图文交替 ---------- */
.feature-row{display:flex;align-items:center;gap:56px;margin-bottom:72px;}
.feature-row:last-child{margin-bottom:0;}
.feature-row.is-reverse{flex-direction:row-reverse;}
.feature-media{flex:1 1 48%;}
.feature-copy{flex:1 1 52%;}
.feature-index{
  display:inline-flex;align-items:baseline;gap:10px;
  font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--brand);
  margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.feature-copy h3{font-size:clamp(20px,2vw,24px);font-weight:800;letter-spacing:-.01em;margin-bottom:12px;}
.feature-copy p{color:var(--muted);margin-bottom:18px;}
.feature-points{margin-bottom:20px;}
.feature-points li{
  position:relative;padding-left:20px;margin-bottom:8px;font-size:15px;color:var(--muted);
}
.feature-points li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--brand);
}

/* ---------- 序号价值行 ---------- */
.value-row{
  display:flex;align-items:flex-start;gap:32px;
  padding:30px 0;border-top:1px solid var(--line);
}
.value-row:last-child{border-bottom:1px solid var(--line);}
.value-num{
  flex:0 0 auto;font-size:56px;line-height:1;font-weight:800;
  color:transparent;-webkit-text-stroke:1.5px var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
.value-body h3{font-size:20px;font-weight:800;margin-bottom:8px;}
.value-body p{color:var(--muted);max-width:760px;}

/* ---------- 规格键值区 ---------- */
.spec-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);height:100%;
}
.spec-panel h3{font-size:19px;font-weight:800;margin-bottom:6px;}
.spec-panel .spec-hint{font-size:14px;color:var(--faint);margin-bottom:20px;}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line);}
.spec-row:last-child{border-bottom:0;}
.spec-key{font-size:13px;color:var(--faint);}
.spec-val{font-size:15px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;text-align:right;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;transition:box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-item.is-open{border-color:rgba(255,90,40,.45);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:0;text-align:left;
  padding:20px 22px 20px 24px;font-size:16px;font-weight:700;color:var(--ink);
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-q i{color:var(--brand);transition:transform var(--dur) var(--ease);flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease);}
.faq-a p{padding:0 22px 22px 24px;color:var(--muted);font-size:15px;}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink);color:#fff;padding:72px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(24px,2.6vw,34px);font-weight:800;letter-spacing:-.02em;line-height:1.3;}
.cta-inner p{margin-top:12px;color:rgba(255,255,255,.68);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-note{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;padding:72px 0 26px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.02em;margin-bottom:16px;}
.footer-desc{color:rgba(255,255,255,.6);font-size:14px;max-width:360px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.6);}
.footer-col ul li a{color:rgba(255,255,255,.6);}
.footer-col ul li a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 入场动效 ---------- */
@keyframes riseIn{from{opacity:0;transform:translateY(18px);}to{opacity:1;transform:translateY(0);}}
.reveal{animation:riseIn 520ms var(--ease) both;}
.reveal.d1{animation-delay:80ms;}
.reveal.d2{animation-delay:160ms;}
.reveal.d3{animation-delay:240ms;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .nav-search input{width:160px;}
}
@media screen and (max-width:1023px){
  :root{--sec:72px;}
  .container{padding:0 20px;}
  .nav-links,.header-actions .nav-search,.header-actions .btn-sm{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-inner{justify-content:space-between;}
  .hero-inner{flex-direction:column;align-items:stretch;gap:34px;}
  .hero-copy,.hero-visual{flex:1 1 auto;}
  .feature-row,.feature-row.is-reverse{flex-direction:column;gap:28px;margin-bottom:56px;}
  .feature-media,.feature-copy{flex:1 1 auto;width:100%;}
  .stats-band .divider{display:none;}
  .stats-band .stat{margin-bottom:26px;}
  .value-num{font-size:44px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:639px){
  :root{--sec:48px;}
  .container{padding:0 16px;}
  .brand{font-size:15px;}
  .brand-text{white-space:normal;line-height:1.2;}
  .hero-cat{padding:40px 0 48px;}
  .hero-cat .lead{font-size:16px;}
  .section-head{margin-bottom:32px;}
  .value-row{gap:18px;padding:24px 0;}
  .value-num{font-size:34px;-webkit-text-stroke-width:1.2px;}
  .spec-panel{padding:22px;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:2px;}
  .spec-val{text-align:left;}
  .faq-q{padding:16px 18px 16px 20px;font-size:15px;}
  .faq-a p{padding:0 18px 18px 20px;}
  .cta-band{padding:52px 0;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-delay:0ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .media-frame:hover img{transform:none;}
  .btn-primary:hover{transform:none;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --brand:#FF5A28;
  --brand-soft:#FFF1EA;
  --ink:#101418;
  --green:#0E5C4A;
  --green-soft:#EDF5F1;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E7E2D8;
  --text:#14181C;
  --text-2:#5A6068;
  --text-3:#8B9099;
  --warn:#B4801A;
  --danger:#C0392B;
  --r-card:16px;
  --r-img:20px;
  --r-ctrl:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,20,24,.04);
  --sh-2:0 12px 32px -12px rgba(16,20,24,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t-fast:200ms;
  --t-mid:280ms;
  --sec:96px;
  --nav-h:64px;
}

*,*::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:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text);text-decoration:none;transition:color var(--t-fast) var(--ease)}
a:hover{color:var(--brand)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;font-weight:800;color:var(--text);line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
input,button{font-size:inherit}
:focus{outline:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:var(--brand);color:#fff}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.sec{padding-top:var(--sec);padding-bottom:var(--sec)}
.sec-tight{padding-top:64px;padding-bottom:64px}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
  background:var(--brand-soft);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:16px;
}
.sec-kicker i{font-size:11px}
.sec-title{font-size:clamp(26px,3.2vw,40px);margin-bottom:14px}
.sec-sub{color:var(--text-2);font-size:16px;max-width:660px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t-mid) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -14px rgba(16,20,24,.35)}
.nav-wrap{
  height:var(--nav-h);
  display:flex;align-items:center;gap:28px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  flex:0 0 auto;
  font-weight:800;font-size:18px;letter-spacing:-.02em;color:var(--text);
  white-space:nowrap;
}
.brand:hover{color:var(--text)}
.brand-mark{
  width:26px;height:26px;flex:0 0 26px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand) 0%,#FF8A5B 100%);
  position:relative;
  box-shadow:0 6px 16px -8px rgba(255,90,40,.9);
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;
  background:#fff;border-radius:3px;
}
.nav-links{
  display:flex;align-items:center;gap:26px;
  margin-left:8px;
}
.nav-links a{
  position:relative;
  font-size:15px;font-weight:600;color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--text)}
.nav-links a.is-active{color:var(--text);font-weight:800}
.nav-links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-19px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-actions{
  margin-left:auto;display:flex;align-items:center;gap:12px;
}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:0 14px;
  height:40px;
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,90,40,.12)}
.nav-search i{color:var(--text-3);font-size:13px}
.nav-search input{
  border:0;background:transparent;outline:none;
  width:150px;height:100%;color:var(--text);font-size:14px;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);background:#fff;border-radius:var(--r-ctrl);
  color:var(--text);cursor:pointer;
}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
}
.mobile-drawer.is-open{display:block}
.drawer-inner{padding:18px 24px 26px}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  border:1px solid var(--line);border-radius:var(--r-ctrl);
  padding:0 14px;height:46px;background:var(--bg);margin-bottom:16px;
}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;height:100%}
.drawer-search i{color:var(--text-3)}
.drawer-links{display:flex;flex-direction:column;gap:2px;margin-bottom:18px}
.drawer-links a{
  padding:13px 4px;font-size:16px;font-weight:600;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-links a.is-active{color:var(--brand)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-ctrl);
  padding:12px 22px;
  font-weight:700;font-size:15px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--t-fast) var(--ease),background var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),
             box-shadow var(--t-fast) var(--ease);
  min-height:44px;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 26px -14px rgba(255,90,40,.95)}
.btn-primary:hover{background:#FF6E42;color:#fff;transform:translateY(-2px) scale(1.02)}
.btn-primary:active{transform:translateY(1px) scale(1)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px}
.btn-block{width:100%}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:#fff;color:var(--brand);transform:translateY(-2px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-outline-light:hover{border-color:#fff;color:#fff;transform:translateY(-2px)}

/* ---------- hero ---------- */
.hero{
  position:relative;
  background-color:var(--ink);
  background-image:linear-gradient(100deg,rgba(16,20,24,.94) 0%,rgba(16,20,24,.82) 46%,rgba(16,20,24,.6) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.08);
}
.hero-inner{
  position:relative;z-index:2;
  padding:72px 0 76px;
}
.hero-copy{max-width:640px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.62)}
.breadcrumb a:hover{color:var(--brand)}
.hero h1{
  color:#fff;
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.18;
  margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:#FFB795}
.hero-sub{
  color:rgba(255,255,255,.82);
  font-size:17px;
  max-width:600px;
  margin-bottom:24px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 20px;
  font-size:13.5px;color:rgba(255,255,255,.72);
  margin-bottom:26px;
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta b{color:#fff;font-weight:700;font-variant-numeric:tabular-nums}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-figure{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:var(--sh-2);
  background:#1b2027;
}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
}

/* ---------- download band ---------- */
.band-dark{
  background:var(--ink);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.band-dark h2,.band-dark h3,.band-dark h4{color:#fff}
.band-dark .sec-sub{color:rgba(255,255,255,.7)}
.band-orange{
  background:linear-gradient(120deg,#FF5A28 0%,#FF7A4A 100%);
  color:#fff;
}
.band-orange h2{color:#fff}
.band-orange .sec-sub{color:rgba(255,255,255,.9)}

.dl-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.dl-group{
  display:flex;flex-wrap:wrap;gap:12px;
}
.dl-btn{
  display:inline-flex;flex-direction:column;align-items:flex-start;gap:2px;
  min-width:150px;
  padding:13px 18px;
  border-radius:var(--r-ctrl);
  border:1px solid rgba(255,255,255,.3);
  background:rgba(255,255,255,.04);
  color:#fff;
  font-weight:700;font-size:15px;
  transition:transform var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),background var(--t-fast) var(--ease);
  min-height:44px;
}
.dl-btn span{display:inline-flex;align-items:center;gap:8px}
.dl-btn em{
  font-style:normal;font-size:12.5px;font-weight:500;color:rgba(255,255,255,.62);
  font-variant-numeric:tabular-nums;
}
.dl-btn:hover{transform:translateY(-3px);border-color:#fff;color:#fff;background:rgba(255,255,255,.1)}
.dl-btn.is-primary{background:var(--brand);border-color:var(--brand);box-shadow:0 14px 30px -16px rgba(255,90,40,.95)}
.dl-btn.is-primary em{color:rgba(255,255,255,.86)}
.dl-btn.is-primary:hover{background:#FF6E42;border-color:#FF6E42}
.dl-note{
  margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.6);
  display:flex;align-items:flex-start;gap:8px;
}
.dl-note i{color:var(--brand);margin-top:4px}
.qr-card{
  display:flex;align-items:center;gap:16px;
  background:#fff;color:var(--text);
  border-radius:var(--r-card);
  padding:16px;
  box-shadow:var(--sh-2);
  min-width:264px;
}
.qr-box{
  width:78px;height:78px;flex:0 0 78px;
  border-radius:12px;
  background:var(--bg);
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);font-size:34px;
}
.qr-text strong{display:block;font-size:15px;font-weight:800;margin-bottom:4px}
.qr-text span{font-size:13px;color:var(--text-2);line-height:1.55;display:block}

/* ---------- layout: sticky toc + content ---------- */
.doc-layout{padding-top:72px;padding-bottom:88px}
.toc-col{position:relative}
.toc-card{
  position:sticky;top:88px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--sh-1);
}
.toc-title{
  font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--text-3);
  text-transform:uppercase;margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;counter-reset:toc}
.toc-list a{
  display:flex;align-items:baseline;gap:10px;
  padding:9px 10px;border-radius:10px;
  font-size:14.5px;font-weight:600;color:var(--text-2);
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.toc-list a::before{
  counter-increment:toc;
  content:counter(toc,decimal-leading-zero);
  font-size:11.5px;font-weight:800;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.toc-list a:hover{background:var(--bg);color:var(--text)}
.toc-list a.is-active{background:var(--brand-soft);color:var(--brand)}
.toc-list a.is-active::before{color:var(--brand)}
.toc-aside{
  margin-top:18px;padding-top:18px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--text-2);line-height:1.7;
}
.toc-aside b{color:var(--text);font-variant-numeric:tabular-nums}

.doc-section{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:34px 34px 36px;
  margin-bottom:24px;
  box-shadow:var(--sh-1);
  scroll-margin-top:92px;
}
.doc-section:last-child{margin-bottom:0}
.doc-index{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:800;letter-spacing:.08em;
  color:var(--green);background:var(--green-soft);
  border-radius:var(--r-pill);padding:5px 13px;margin-bottom:14px;
}
.doc-section h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:14px}
.doc-lead{color:var(--text-2);font-size:16px;margin-bottom:22px;max-width:720px}
.doc-text{color:var(--text-2);font-size:16px;line-height:1.9;margin-bottom:16px}
.doc-text:last-child{margin-bottom:0}

.figure-block{
  border:1px solid var(--line);
  border-radius:var(--r-img);
  overflow:hidden;
  background:#fff;
  margin:24px 0 8px;
}
.figure-block img{width:100%;aspect-ratio:16/10;object-fit:cover}
.figure-cap{
  font-size:13px;color:var(--text-3);padding:12px 18px;border-top:1px solid var(--line);
}

/* spec rows */
.spec-list{border-top:1px solid var(--line);margin-top:8px}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  padding:14px 0;border-bottom:1px solid var(--line);
}
.spec-key{font-size:14px;color:var(--text-3);flex:0 0 auto}
.spec-val{
  font-size:15px;font-weight:700;color:var(--text);text-align:right;
  font-variant-numeric:tabular-nums;
}
.spec-val.small{font-weight:600;font-size:14.5px}

/* columns of spec cards */
.spec-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.spec-card{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 20px;
  background:var(--bg);
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);background:#fff}
.spec-card h3{font-size:18px;margin-bottom:4px}
.spec-card .spec-card-note{font-size:13px;color:var(--text-3);margin-bottom:14px}
.spec-card .spec-row{padding:10px 0}
.spec-card .spec-key{font-size:13px}
.spec-card .spec-val{font-size:14px}

/* steps */
.steps{margin-top:10px}
.step{
  display:flex;gap:22px;
  padding:26px 0;
  border-bottom:1px dashed var(--line);
}
.step:last-child{border-bottom:0;padding-bottom:0}
.step-num{
  flex:0 0 72px;
  font-size:52px;font-weight:800;line-height:.9;
  color:transparent;
  -webkit-text-stroke:1.5px var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.04em;
}
.step-body h3{font-size:19px;margin-bottom:8px}
.step-body p{color:var(--text-2);font-size:15.5px;line-height:1.85}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:var(--text-2);
  background:var(--bg);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:4px 12px;
}
.tag.is-green{color:var(--green);background:var(--green-soft);border-color:#D5E7DF}
.tag.is-brand{color:var(--brand);background:var(--brand-soft);border-color:#FFDCCF}

/* notice */
.notice{
  background:var(--bg);
  border-left:4px solid var(--brand);
  border-radius:0 var(--r-ctrl) var(--r-ctrl) 0;
  padding:18px 22px;
  margin-top:24px;
}
.notice h4{font-size:15.5px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.notice h4 i{color:var(--brand)}
.notice ul{display:flex;flex-direction:column;gap:8px}
.notice li{
  position:relative;padding-left:18px;
  font-size:14.5px;color:var(--text-2);line-height:1.8;
}
.notice li::before{
  content:"";position:absolute;left:2px;top:11px;
  width:6px;height:6px;border-radius:2px;background:var(--brand);
}
.notice.is-green{border-left-color:var(--green)}
.notice.is-green li::before{background:var(--green)}
.notice.is-green h4 i{color:var(--green)}

/* faq */
.faq-wrap{max-width:940px;margin:0 auto}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.faq-item:hover{box-shadow:var(--sh-2)}
.faq-item.is-open{border-color:#FFD3C2}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;cursor:pointer;
  padding:20px 22px 20px 24px;
  text-align:left;
  font-size:16.5px;font-weight:700;color:var(--text);
  position:relative;
  min-height:44px;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-q i{
  color:var(--text-3);font-size:14px;
  transition:transform var(--t-mid) var(--ease),color var(--t-mid) var(--ease);
}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--brand)}
.faq-a{
  height:0;overflow:hidden;
  transition:height var(--t-mid) var(--ease);
}
.faq-a-inner{
  padding:0 24px 22px 24px;
  color:var(--text-2);font-size:15.5px;line-height:1.9;
  border-top:1px solid var(--line);
  padding-top:16px;margin:0 24px 22px 24px;padding-left:0;padding-right:0;
}

/* cta band */
.cta-band{
  background:var(--ink);
  color:#fff;
  border-radius:var(--r-img);
  padding:48px 44px;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border-radius:50%;background:rgba(255,90,40,.22);filter:blur(10px);
}
.cta-band-inner{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.72);max-width:620px;margin-bottom:26px}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:72px 0 28px;
  margin-top:0;
}
.site-footer h4{
  color:#fff;font-size:14px;letter-spacing:.06em;margin-bottom:16px;font-weight:800;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-size:18px;font-weight:800;margin-bottom:14px;
}
.footer-brand .brand-mark{width:24px;height:24px;flex:0 0 24px}
.footer-brand .brand-mark::after{inset:7px}
.footer-desc{font-size:14px;color:rgba(255,255,255,.62);line-height:1.85;max-width:340px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:rgba(255,255,255,.62)}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media screen and (max-width:1199px){
  :root{--sec:80px}
  .step-num{flex:0 0 62px;font-size:44px}
}
@media screen and (max-width:1023px){
  :root{--sec:72px}
  .nav-links{display:none}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .spec-cards{grid-template-columns:1fr 1fr}
  .hero-inner{padding:56px 0 60px}
  .toc-card{position:static;margin-bottom:24px}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc-list a{background:var(--bg);padding:7px 12px;font-size:13.5px}
  .toc-list a::before{content:none}
  .doc-section{padding:28px 24px 30px}
  .cta-band{padding:38px 28px}
}
@media screen and (max-width:767px){
  :root{--sec:56px;--nav-h:56px}
  .container{padding-left:16px;padding-right:16px}
  .brand{font-size:15px}
  .brand-mark{width:22px;height:22px;flex:0 0 22px}
  .brand-mark::after{inset:6px}
  .spec-cards{grid-template-columns:1fr}
  .dl-btn{min-width:calc(50% - 6px);flex:1 1 calc(50% - 6px)}
  .dl-head{margin-bottom:24px}
  .qr-card{min-width:100%}
  .step{flex-direction:column;gap:10px}
  .step-num{font-size:38px;flex:0 0 auto}
  .hero-sub{font-size:15.5px}
  .hero-figure img{aspect-ratio:4/3}
  .figure-block img{aspect-ratio:4/3}
  .footer-bottom{flex-direction:column;gap:8px}
  .doc-section{padding:24px 18px 26px;border-radius:14px}
  .cta-band{padding:30px 20px;border-radius:16px}
  .faq-q{font-size:15.5px;padding:18px 18px 18px 20px}
  .faq-a-inner{margin:0 18px 18px 18px}
}
@media screen and (max-width:379px){
  .dl-btn{min-width:100%;flex:1 1 100%}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .btn:hover,.dl-btn:hover,.spec-card:hover{transform:none}
}