/* roulang page: index */
:root{
  --c-ink:#14181A;--c-ink-2:#3D4547;--c-muted:#7C8483;
  --c-line:#E4E0D8;--c-line-strong:#CFC9BD;
  --c-bg:#F7F5F0;--c-bg-2:#EFEBE3;--c-surface:#FFFFFF;
  --c-primary:#0F5C55;--c-primary-600:#0B4741;--c-primary-soft:#E3EFEC;
  --c-accent:#B9823B;--c-ok:#2F7D5F;--c-warn:#B9823B;--c-error:#A8443A;
  --c-dark:#101415;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --sh-1:0 1px 2px rgba(20,24,26,.04);
  --sh-2:0 8px 24px -12px rgba(20,24,26,.12);
  --e-out:cubic-bezier(.22,.61,.36,1);
  --r-s:4px;--r-m:6px;--r-l:10px;--r-xl:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--c-bg);color:var(--c-ink);font-family:var(--font-sans);font-size:16px;line-height:1.85;font-weight:400;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.sec-head{display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:end;margin-bottom:48px}
.sec-head h2{font-size:clamp(24px,2.4vw,36px);line-height:1.25;font-weight:600;letter-spacing:.01em}
.sec-head .sec-note{font-size:14.5px;color:var(--c-muted);line-height:1.8}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--c-muted);letter-spacing:.08em;margin-bottom:16px}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--c-line-strong)}
.lead{font-size:16.5px;color:var(--c-ink-2);line-height:1.9}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:500;line-height:1;padding:14px 24px;border-radius:var(--r-m);border:1px solid transparent;transition:all 240ms var(--e-out)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:var(--c-primary);color:#fff}
.btn-text{color:var(--c-primary);padding:14px 4px;font-weight:500}
.btn-text .arw{display:inline-block;transition:transform 240ms var(--e-out)}
.btn-text:hover{border-bottom:1px solid var(--c-primary)}
.btn-text:hover .arw{transform:translateX(4px)}
.btn-dark{background:#fff;color:var(--c-dark)}
.btn-dark:hover{background:var(--c-primary-soft);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed}
.btn.is-loading{position:relative;padding-right:46px}
.btn.is-loading::after{content:"";position:absolute;right:20px;top:50%;width:15px;height:15px;margin-top:-7.5px;border:1.5px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.badge{display:inline-flex;align-items:center;height:22px;padding:0 8px;font-size:12px;font-weight:500;border:1px solid var(--c-line-strong);border-radius:var(--r-s);color:var(--c-ink-2);background:transparent}
.badge--primary{border-color:rgba(15,92,85,.35);color:var(--c-primary);background:var(--c-primary-soft)}
.badge--gold{border-color:rgba(185,130,59,.35);color:var(--c-accent)}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;background:rgba(247,245,240,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line);transition:height 240ms var(--e-out)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;transition:height 240ms var(--e-out)}
.site-header.is-scrolled .nav-wrap{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:600;letter-spacing:.02em}
.brand-mark{width:20px;height:20px;border:1.5px solid var(--c-primary);border-radius:5px;position:relative;flex:none}
.brand-mark::after{content:"";position:absolute;left:4px;top:6px;width:10px;height:1.5px;background:var(--c-primary);box-shadow:0 4px 0 0 var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);padding:6px 0;transition:color 240ms var(--e-out)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--c-primary);transition:width 240ms var(--e-out)}
.nav-links a:hover{color:var(--c-ink)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--c-ink)}
.nav-links a.is-active::after{width:100%}
.nav-cta{display:inline-flex;align-items:center;height:38px;padding:0 18px;font-size:14.5px;font-weight:500;color:var(--c-primary);border:1px solid var(--c-primary);border-radius:var(--r-m);transition:all 240ms var(--e-out)}
.nav-cta:hover{background:var(--c-primary);color:#fff}
.nav-toggle{display:none;width:40px;height:40px;position:relative}
.nav-toggle span{position:absolute;left:9px;width:22px;height:1.5px;background:var(--c-ink);transition:all 240ms var(--e-out)}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:19.5px}
.nav-toggle span:nth-child(3){top:25px}
.nav-toggle.is-open span:nth-child(1){top:19.5px;transform:rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:19.5px;transform:rotate(-45deg)}
.drawer{position:fixed;inset:72px 0 0 0;background:#fff;z-index:79;padding:8px 24px 40px;transform:translateY(-8px);opacity:0;visibility:hidden;transition:all 240ms var(--e-out);overflow-y:auto}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer a{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:500;padding:22px 2px;border-bottom:1px solid var(--c-line)}
.drawer a.is-active{color:var(--c-primary)}
.drawer a.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary)}
.drawer .drawer-note{margin-top:24px;font-size:13.5px;color:var(--c-muted);line-height:1.8}

/* ---------- hero ---------- */
.hero{position:relative;margin-top:72px;min-height:620px;display:flex;align-items:center;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:rgba(16,20,21,.62)}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:72px 72px;opacity:.5}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:center;width:100%;padding:96px 0 88px}
.hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;font-weight:600;letter-spacing:.01em;max-width:16em}
.hero .hero-sub{margin-top:22px;font-size:17px;line-height:1.9;color:rgba(255,255,255,.78);max-width:32em}
.hero-actions{margin-top:36px;display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px}
.hero-actions .btn-text{color:#fff}
.hero-actions .btn-text:hover{border-bottom-color:rgba(255,255,255,.6)}
.hero-trust{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16);display:flex;flex-wrap:wrap;gap:10px 20px}
.hero-trust span{font-size:13.5px;color:rgba(255,255,255,.7);display:inline-flex;align-items:center;gap:10px}
.hero-trust span+span::before{content:"";width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.45)}
.hero-scroll{margin-top:26px;font-size:12.5px;color:rgba(255,255,255,.55);letter-spacing:.08em}

.hero-panel{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-xl);padding:20px;backdrop-filter:blur(4px)}
.panel-bar{display:flex;align-items:center;gap:7px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.12)}
.panel-bar .dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.28)}
.panel-bar .dot:first-child{background:var(--c-accent)}
.panel-bar-label{margin-left:auto;font-size:12px;color:rgba(255,255,255,.5);letter-spacing:.08em}
.panel-body{padding-top:24px;display:grid;gap:20px}
.ph-line{height:10px;border-radius:3px;background:rgba(255,255,255,.14)}
.ph-line.w70{width:70%}.ph-line.w60{width:60%}.ph-line.w45{width:45%}.ph-line.w40{width:40%}
.panel-field{position:relative;border:1px solid rgba(255,255,255,.18);border-radius:var(--r-m);padding:14px 16px}
.panel-field.is-focus{border-color:rgba(227,239,236,.65);box-shadow:0 0 0 3px rgba(227,239,236,.14)}
.panel-foot{display:flex;align-items:center;justify-content:space-between;padding-top:20px;border-top:1px solid rgba(255,255,255,.12)}
.panel-btn{width:108px;height:38px;border-radius:var(--r-m);background:rgba(255,255,255,.86)}
.panel-status{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:rgba(255,255,255,.7)}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--c-ok);box-shadow:0 0 0 3px rgba(47,125,95,.25)}

/* ---------- metrics ---------- */
.metrics{background:var(--c-dark);color:#fff;padding:72px 0}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:0 32px;border-left:1px solid rgba(255,255,255,.10)}
.metric:first-child{border-left:0;padding-left:0}
.metric-line{width:24px;height:2px;background:var(--c-primary);margin-bottom:22px}
.metric-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(36px,4vw,52px);font-weight:500;line-height:1;letter-spacing:-.01em}
.metric-unit{font-size:14px;color:rgba(255,255,255,.6);margin-left:6px}
.metric-label{margin-top:14px;font-size:13px;color:rgba(255,255,255,.6);line-height:1.7}

/* ---------- services ---------- */
.svc{display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid var(--c-line);border-left:1px solid var(--c-line)}
.svc-item{grid-column:span 2;position:relative;border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:34px 28px 36px;transition:transform 240ms var(--e-out),background 240ms var(--e-out)}
.svc-item.wide{grid-column:span 3}
.svc-item:hover{transform:translateY(-2px);background:var(--c-surface)}
.svc-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:40px;line-height:1;color:var(--c-line-strong);transition:color 240ms var(--e-out)}
.svc-item:hover .svc-num{color:var(--c-primary)}
.svc-item h3{margin-top:20px;font-size:20px;font-weight:600}
.svc-item p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--c-muted)}
.svc-more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:13.5px;color:var(--c-primary);opacity:0;transform:translateX(-4px);transition:all 240ms var(--e-out)}
.svc-item:hover .svc-more{opacity:1;transform:translateX(0)}

/* ---------- cms list ---------- */
.cms-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.cms-head h2{font-size:clamp(24px,2.4vw,36px);font-weight:600;line-height:1.25}
.cms-head p{margin-top:10px;font-size:14.5px;color:var(--c-muted)}
.cms-body{display:grid;grid-template-columns:7fr 5fr;gap:48px}
.cms-feature{display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1);transition:all 240ms var(--e-out)}
.cms-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.cms-feature-media{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-2)}
.cms-feature-media img{width:100%;height:100%;transition:transform 400ms var(--e-out)}
.cms-feature:hover .cms-feature-media img{transform:scale(1.03)}
.cms-feature-body{padding:26px 28px 30px}
.cms-feature-body h3{margin-top:14px;font-size:24px;font-weight:600;line-height:1.4}
.cms-feature-body p{margin-top:12px;font-size:15px;color:var(--c-muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-meta{margin-top:18px;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--c-muted)}
.cms-meta time{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.cms-rows{border-top:1px solid var(--c-line)}
.cms-row{border-bottom:1px solid var(--c-line)}
.cms-row-link{display:block;padding:20px 4px;transition:background 240ms var(--e-out)}
.cms-row-link:hover{background:var(--c-bg-2)}
.cms-row-title{display:block;font-size:17px;font-weight:500;line-height:1.55;transition:color 240ms var(--e-out)}
.cms-row-link:hover .cms-row-title{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px}
.cms-row-meta{margin-top:10px;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--c-muted)}
.cms-row-meta time{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.cms-empty{border:1px dashed var(--c-line-strong);border-radius:var(--r-l);padding:48px 24px;text-align:center;color:var(--c-muted);font-size:14.5px}
.cms-empty a{display:inline-block;margin-top:12px;color:var(--c-primary);font-size:14.5px}
.cms-empty a:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- compare ---------- */
.compare-top{display:grid;grid-template-columns:repeat(2,1fr);gap:48px;margin-bottom:48px}
.compare-stat{border-top:1px solid var(--c-line);padding-top:24px}
.compare-stat .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(32px,3.4vw,44px);font-weight:500;line-height:1}
.compare-stat .unit{font-size:14px;color:var(--c-muted);margin-left:6px}
.compare-stat p{margin-top:12px;font-size:14px;color:var(--c-muted)}
.bar{height:4px;border-radius:999px;background:var(--c-bg-2);margin-top:18px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--c-primary);border-radius:999px}
.compare-cols{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--c-line)}
.compare-col{padding:36px 40px 40px 0}
.compare-col+.compare-col{border-left:1px solid var(--c-line);padding-left:40px;padding-right:0}
.compare-col h3{font-size:18px;font-weight:600;color:var(--c-ink-2)}
.compare-col.is-site h3{color:var(--c-primary)}
.compare-col ul{margin-top:24px;display:grid;gap:16px}
.compare-col li{position:relative;padding-left:20px;font-size:15px;color:var(--c-ink-2);line-height:1.8}
.compare-col li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;background:var(--c-line-strong)}
.compare-col.is-site li::before{background:var(--c-primary)}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;text-align:left;padding:22px 4px;font-size:17.5px;font-weight:500;line-height:1.6;transition:color 240ms var(--e-out)}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{position:relative;flex:none;width:18px;height:18px;transition:transform 240ms var(--e-out)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px}
.faq-icon::before{left:0;top:8.25px;width:18px;height:1.5px}
.faq-icon::after{top:0;left:8.25px;width:1.5px;height:18px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;background:var(--c-bg-2);border-radius:var(--r-m);transition:max-height 240ms var(--e-out),padding 240ms var(--e-out),margin 240ms var(--e-out)}
.faq-item.is-open .faq-a{max-height:420px;padding:20px 24px;margin-bottom:18px}
.faq-a p{font-size:15.5px;line-height:1.85;color:var(--c-ink-2)}

/* ---------- contact ---------- */
.contact{background:var(--c-bg-2);border-top:1px solid var(--c-line)}
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.contact h2{font-size:clamp(24px,2.4vw,34px);font-weight:600;line-height:1.3}
.contact-points{margin-top:28px;display:grid;gap:14px}
.contact-points li{position:relative;padding-left:18px;font-size:15px;color:var(--c-ink-2)}
.contact-points li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:1.5px;background:var(--c-primary)}
.contact-info{margin-top:36px;padding-top:24px;border-top:1px solid var(--c-line-strong)}
.contact-info dl{display:grid;gap:12px;font-size:14.5px}
.contact-info div{display:flex;gap:12px}
.contact-info dt{color:var(--c-muted);min-width:76px}
.contact-info dd{margin:0;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.form-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);padding:32px;box-shadow:var(--sh-1)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:grid;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:500;color:var(--c-ink-2)}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--c-line-strong);border-radius:var(--r-m);background:var(--c-surface);padding:0 14px;height:48px;font-size:15px;transition:border-color 240ms var(--e-out),box-shadow 240ms var(--e-out)}
.field textarea{height:118px;padding:12px 14px;line-height:1.75;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,92,85,.08)}
.form-actions{margin-top:24px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.form-note{font-size:12.5px;color:var(--c-muted);line-height:1.7}
.form-note.is-ok{color:var(--c-ok)}

/* ---------- footer ---------- */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--c-muted);line-height:1.85;max-width:30em}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--c-ink-2);margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a,.footer-col span{font-size:14px;color:var(--c-muted);transition:color 240ms var(--e-out)}
.footer-col a:hover{color:var(--c-primary)}
.footer-col .num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.qr-box{width:96px;height:96px;border:1px solid var(--c-line-strong);border-radius:var(--r-m);background:repeating-linear-gradient(45deg,var(--c-surface),var(--c-surface) 6px,var(--c-bg) 6px,var(--c-bg) 12px);margin-bottom:12px}
.footer-bottom{margin-top:64px;border-top:1px solid var(--c-line);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--c-muted)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 400ms var(--e-out),transform 400ms var(--e-out)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero-inner{grid-template-columns:6fr 5fr;gap:48px}
}
@media (max-width:1023px){
  .section{padding:80px 0}
  .hero-inner{grid-template-columns:1fr;gap:48px;padding:72px 0}
  .hero-panel{max-width:520px}
  .sec-head{grid-template-columns:1fr;gap:16px}
  .svc-item,.svc-item.wide{grid-column:span 3}
  .cms-body{grid-template-columns:1fr;gap:40px}
  .contact-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:block}
  .hero{margin-top:72px;min-height:auto;background-image:none}
  .hero .hero-bg-mobile{display:block}
  .metrics{padding:56px 0}
  .metrics-grid{grid-template-columns:1fr 1fr;gap:36px 0}
  .metric{padding:0 20px;border-left:0;border-top:1px solid rgba(255,255,255,.10);padding-top:24px}
  .metric:nth-child(odd){padding-left:0}
  .metric:nth-child(1),.metric:nth-child(2){border-top:0;padding-top:0}
  .metric-label{font-size:12.5px}
  .svc-item,.svc-item.wide{grid-column:span 6;padding:26px 20px 28px}
  .svc-num{font-size:32px}
  .svc-more{opacity:1;transform:none}
  .cms-feature-body{padding:22px 20px 24px}
  .cms-feature-body h3{font-size:20px}
  .compare-top{grid-template-columns:1fr;gap:32px}
  .compare-cols{grid-template-columns:1fr}
  .compare-col{padding:28px 0}
  .compare-col+.compare-col{border-left:0;border-top:1px solid var(--c-line);padding-left:0}
  .faq-q{font-size:16.5px}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:24px 20px}
  .form-actions .btn{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{margin-top:48px;flex-direction:column;gap:8px}
}
@media (min-width:768px){
  .hero .hero-bg-mobile{display:none}
}
@media (max-width:519px){
  .hero h1{font-size:28px}
  .hero .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%;justify-content:center}
  .hero-actions{gap:12px}
  .metrics-grid{grid-template-columns:1fr}
  .metric{border-top:1px solid rgba(255,255,255,.10);padding:24px 0 0}
  .metric:nth-child(1){border-top:0;padding-top:0}
}

/* roulang page: article */
:root{
  --c-ink:#14181A;
  --c-ink-2:#3D4547;
  --c-muted:#7C8483;
  --c-line:#E4E0D8;
  --c-line-strong:#CFC9BD;
  --c-bg:#F7F5F0;
  --c-bg-2:#EFEBE3;
  --c-surface:#FFFFFF;
  --c-primary:#0F5C55;
  --c-primary-600:#0B4741;
  --c-primary-soft:#E3EFEC;
  --c-accent:#B9823B;
  --c-ok:#2F7D5F;
  --c-warn:#B9823B;
  --c-error:#A8443A;
  --c-dark:#101415;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --sh-1:0 1px 2px rgba(20,24,26,.04);
  --sh-2:0 8px 24px -12px rgba(20,24,26,.12);
  --r-1:4px; --r-2:6px; --r-3:10px; --r-4:14px; --r-full:999px;
  --e-out:cubic-bezier(.22,.61,.36,1);
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.01em;line-height:1.3}
p{margin:0 0 20px}
ul,ol{margin:0;padding:0;list-style:none}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(247,245,240,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:height .24s var(--e-out);
}
.header-inner{
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  transition:height .24s var(--e-out);
}
.site-header.is-compact .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:600;letter-spacing:.02em;color:var(--c-ink);white-space:nowrap}
.brand-mark{
  width:20px;height:20px;border:1.5px solid var(--c-primary);border-radius:5px;
  position:relative;flex:none;
}
.brand-mark::after{
  content:"";position:absolute;left:4px;top:4px;right:-5px;bottom:-5px;
  border:1.5px solid var(--c-accent);border-radius:5px;opacity:.75;
}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);
  padding:6px 0;transition:color .18s var(--e-out);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-primary);transition:width .24s var(--e-out);
}
.nav-links a:hover{color:var(--c-ink)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--c-ink)}
.nav-links a.is-active::after{width:100%}
.nav-cta{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border:1px solid var(--c-primary);border-radius:var(--r-2);
  color:var(--c-primary);font-size:14.5px;font-weight:500;
  transition:background .2s var(--e-out),color .2s var(--e-out);
}
.nav-cta:hover{background:var(--c-primary);color:#fff}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line-strong);
  border-radius:var(--r-2);background:transparent;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--c-ink);transition:transform .24s var(--e-out),opacity .24s var(--e-out)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
.read-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:var(--c-primary);transition:width .1s linear;
}
.drawer{
  position:fixed;inset:0;z-index:70;background:var(--c-bg);
  padding:96px 24px 40px;display:none;
}
.drawer.is-open{display:block}
.drawer a{
  display:flex;align-items:center;gap:12px;
  font-size:22px;font-weight:500;padding:20px 0;border-bottom:1px solid var(--c-line);
}
.drawer a .dot{width:6px;height:6px;border-radius:var(--r-full);background:var(--c-primary);opacity:0}
.drawer a.is-active .dot{opacity:1}
.drawer-close{
  position:absolute;top:20px;right:20px;width:42px;height:42px;
  border:1px solid var(--c-line-strong);background:transparent;border-radius:var(--r-2);
  font-size:18px;color:var(--c-ink-2);cursor:pointer;
}

/* ---------- Breadcrumb ---------- */
main{padding-top:var(--nav-h)}
.crumb-bar{padding:24px 0 0}
.crumb{font-size:12.5px;color:var(--c-muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--c-muted);transition:color .18s var(--e-out)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-line-strong)}
.crumb .current{color:var(--c-primary)}

/* ---------- Article head ---------- */
.article-wrap{max-width:760px;margin:0 auto}
.article-head{padding:20px 0 0}
.cat-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;color:var(--c-primary);
  border:1px solid var(--c-line-strong);border-radius:var(--r-1);
  height:22px;padding:0 8px;background:var(--c-primary-soft);
  transition:border-color .18s var(--e-out);
}
.cat-link:hover{border-color:var(--c-primary);text-decoration:underline}
.article-head h1{
  font-size:clamp(28px,3.4vw,40px);
  line-height:1.25;
  margin:18px 0 16px;
  max-width:22ch;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--c-muted);
}
.meta-row .dot-sep{width:3px;height:3px;border-radius:var(--r-full);background:var(--c-line-strong)}
.divider{height:1px;background:var(--c-line);margin:24px 0}
.cover-figure{margin:0 0 32px}
.cover-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-3);
  border:1px solid var(--c-line);
}
.cover-figure figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px}

/* ---------- Article body ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--c-ink-2)}
.article-body > p:first-of-type{font-size:17.5px;color:var(--c-ink)}
.article-body h2{
  font-size:24px;color:var(--c-ink);margin:40px 0 16px;
  padding-left:14px;position:relative;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.35em;width:3px;height:18px;
  background:var(--c-primary);border-radius:2px;
}
.article-body h3{font-size:19px;color:var(--c-ink);margin:32px 0 12px}
.article-body h4{font-size:17px;color:var(--c-ink);margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:20px}
.article-body ul li{list-style:none;position:relative;padding-left:18px;margin-bottom:8px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.75em;width:6px;height:6px;
  background:var(--c-primary-soft);border:1px solid var(--c-primary);border-radius:1px;
}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:8px;padding-left:4px}
.article-body ol li::marker{font-family:var(--font-num);color:var(--c-primary)}
.article-body blockquote{
  margin:24px 0;padding:20px 24px;
  border-left:2px solid var(--c-primary);
  background:var(--c-bg-2);border-radius:0 var(--r-3) var(--r-3) 0;
  color:var(--c-ink-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-3);margin:12px 0;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:12px 16px;text-align:left;vertical-align:top}
.article-body th{background:var(--c-bg-2);color:var(--c-ink);font-weight:600;font-size:13.5px}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--c-primary-600)}
.article-body code{
  font-family:var(--font-num);font-size:14px;background:var(--c-bg-2);
  padding:2px 6px;border-radius:var(--r-1);color:var(--c-ink);
}
.article-body pre{
  background:var(--c-dark);color:#E8E6E1;padding:20px;border-radius:var(--r-3);
  overflow-x:auto;font-family:var(--font-num);font-size:13.5px;line-height:1.7;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:40px 0}

/* ---------- Tags ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 0;padding-top:24px;border-top:1px solid var(--c-line)}
.tag{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;
  font-size:12px;font-weight:500;color:var(--c-primary);
  border:1px solid var(--c-primary);border-radius:var(--r-1);background:transparent;
}
.tag.gold{color:var(--c-accent);border-color:var(--c-accent)}

/* ---------- Empty state ---------- */
.empty-state{
  border:1px dashed var(--c-line-strong);border-radius:var(--r-3);
  padding:48px 24px;text-align:center;color:var(--c-muted);
  background:var(--c-surface);
}
.empty-state strong{display:block;color:var(--c-ink);font-size:18px;font-weight:600;margin-bottom:8px}
.empty-state a{color:var(--c-primary);border-bottom:1px solid var(--c-primary);padding-bottom:2px}

/* ---------- Related / prev-next ---------- */
.related{margin:64px 0 0}
.related h2{font-size:22px;margin-bottom:8px}
.related .sub{font-size:14.5px;color:var(--c-muted);margin-bottom:20px}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.related-item{
  display:block;padding:20px 22px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-3);
  transition:transform .24s var(--e-out),box-shadow .24s var(--e-out),border-color .24s var(--e-out);
}
.related-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-line-strong)}
.related-item .idx{font-family:var(--font-num);font-size:12.5px;color:var(--c-accent);letter-spacing:.06em}
.related-item h3{font-size:17px;margin:8px 0 8px;color:var(--c-ink)}
.related-item p{font-size:14.5px;color:var(--c-muted);margin:0;line-height:1.8}
.back-row{margin:32px 0 0}
.back-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:500;color:var(--c-primary);
}
.back-link .arrow{transition:transform .24s var(--e-out)}
.back-link:hover .arrow{transform:translateX(-4px)}

/* ---------- CTA band ---------- */
.cta-band{
  margin-top:80px;background:var(--c-dark);color:#fff;padding:64px 0;
}
.cta-band .cta-inner{display:grid;grid-template-columns:1.4fr .8fr;gap:40px;align-items:center}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15.5px;margin:0;max-width:52ch}
.cta-band .btn-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-dark);height:48px;padding:0 24px;
  border-radius:var(--r-2);font-size:15px;font-weight:500;
  transition:transform .2s var(--e-out),opacity .2s var(--e-out);
}
.cta-band .btn-dark:hover{transform:translateY(-1px);opacity:.92}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);margin-top:0;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14.5px;color:var(--c-muted);line-height:1.85;max-width:34ch}
.footer-col h4{font-size:14px;color:var(--c-ink);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:12px;font-size:14.5px;color:var(--c-ink-2)}
.footer-col ul li a{color:var(--c-ink-2);transition:color .18s var(--e-out)}
.footer-col ul li a:hover{color:var(--c-primary)}
.footer-col .num{color:var(--c-ink-2)}
.qr-box{
  width:96px;height:96px;border:1px solid var(--c-line-strong);border-radius:var(--r-3);
  margin-bottom:14px;
  background-image:linear-gradient(45deg,var(--c-line) 25%,transparent 25%,transparent 75%,var(--c-line) 75%),linear-gradient(45deg,var(--c-line) 25%,transparent 25%,transparent 75%,var(--c-line) 75%);
  background-size:12px 12px;background-position:0 0,6px 6px;background-color:#fff;
}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--c-line);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--c-muted);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--e-out),transform .4s var(--e-out)}
.reveal.is-in{opacity:1;transform:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:var(--r-1)}

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

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band .cta-inner{grid-template-columns:1fr;gap:24px}
}
@media (max-width:768px){
  :root{--nav-h:64px}
  .container{padding:0 20px}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .article-head h1{font-size:28px;max-width:none;margin:14px 0 14px}
  .related-grid{grid-template-columns:1fr}
  .cta-band{padding:48px 0;margin-top:56px}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-body h3{font-size:18px}
  .article-body table{font-size:13.5px}
  .article-body th,.article-body td{padding:10px 12px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .article-head h1{font-size:26px}
  .crumb{font-size:12px}
  .empty-state{padding:36px 18px}
}

/* roulang page: category1 */
:root{
  --c-ink:#14181A;
  --c-ink-2:#3D4547;
  --c-muted:#7C8483;
  --c-line:#E4E0D8;
  --c-line-strong:#CFC9BD;
  --c-bg:#F7F5F0;
  --c-bg-2:#EFEBE3;
  --c-surface:#FFFFFF;
  --c-primary:#0F5C55;
  --c-primary-600:#0B4741;
  --c-primary-soft:#E3EFEC;
  --c-accent:#B9823B;
  --c-ok:#2F7D5F;
  --c-warn:#B9823B;
  --c-error:#A8443A;
  --c-dark:#101415;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --r-sm:4px; --r-md:6px; --r-lg:10px; --r-xl:14px; --r-full:999px;
  --sh-1:0 1px 2px rgba(20,24,26,.04);
  --sh-2:0 8px 24px -12px rgba(20,24,26,.12);
  --e-out:cubic-bezier(.22,.61,.36,1);
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:150px;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:2px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--nav-h);
  background:rgba(247,245,240,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:height 240ms var(--e-out),background 240ms var(--e-out);
}
.site-header.is-scrolled{height:64px;background:rgba(247,245,240,.94);}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:16.5px;font-weight:600;letter-spacing:.02em;color:var(--c-ink);white-space:nowrap;}
.brand-mark{
  width:20px;height:20px;flex:0 0 20px;
  border:1.5px solid var(--c-primary);
  border-right-color:transparent;
  border-radius:3px;
  transition:transform 240ms var(--e-out);
}
.brand:hover .brand-mark{transform:translateX(2px);}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);
  padding:4px 0;transition:color 180ms var(--e-out);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--c-primary);transition:width 240ms var(--e-out);
}
.nav-links a:hover{color:var(--c-ink);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--c-primary);}
.nav-links a.is-active::after{width:100%;}
.nav-cta{
  display:inline-flex;align-items:center;
  padding:9px 16px;border:1px solid var(--c-primary);border-radius:var(--r-md);
  font-size:14px;font-weight:500;color:var(--c-primary);background:transparent;
  transition:background 180ms var(--e-out),color 180ms var(--e-out);
}
.nav-cta:hover{background:var(--c-primary);color:#fff;}
.nav-toggle{
  display:none;width:40px;height:40px;border:0;background:transparent;
  padding:0;cursor:pointer;position:relative;
}
.nav-toggle span{
  display:block;width:20px;height:1.5px;margin:4px auto;background:var(--c-ink);
  transition:transform 240ms var(--e-out),opacity 180ms var(--e-out);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* ---------- 页头 ---------- */
.page-head{
  margin-top:var(--nav-h);
  position:relative;
  padding:88px 0 56px;
  background-image:linear-gradient(rgba(16,20,21,.74),rgba(16,20,21,.78)),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  color:#fff;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.page-head .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:rgba(255,255,255,.66);}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{color:rgba(255,255,255,.38);}
.breadcrumb .current{color:#8FD3C9;}
.page-title{
  margin-top:22px;
  font-size:clamp(28px,4.2vw,50px);
  line-height:1.16;
  font-weight:600;
  letter-spacing:.01em;
  max-width:900px;
}
.page-lede{
  margin-top:20px;max-width:760px;
  font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.82);
}
.page-lede strong{color:#fff;font-weight:600;}
.head-facts{
  margin-top:32px;display:flex;flex-wrap:wrap;gap:12px 28px;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.16);
  font-size:13.5px;color:rgba(255,255,255,.72);
}
.head-facts span{display:inline-flex;align-items:center;gap:8px;}
.head-facts .dot{width:6px;height:6px;border-radius:50%;background:#8FD3C9;flex:0 0 6px;}

/* ---------- 锚点导航 ---------- */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:50;
  background:rgba(247,245,240,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.anchor-bar .container{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-top:14px;padding-bottom:14px;}
.anchor-bar .bar-label{font-size:12.5px;color:var(--c-muted);white-space:nowrap;margin-right:8px;letter-spacing:.06em;}
.anchor-bar a{
  flex:0 0 auto;
  font-size:13.5px;color:var(--c-ink-2);
  padding:6px 14px;border:1px solid var(--c-line);border-radius:var(--r-full);
  background:var(--c-surface);
  transition:border-color 180ms var(--e-out),color 180ms var(--e-out),background 180ms var(--e-out);
  white-space:nowrap;
}
.anchor-bar a:hover{border-color:var(--c-primary);color:var(--c-primary);}
.anchor-bar a.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}

/* ---------- 主体两栏 ---------- */
.main-wrap{padding:64px 0 96px;}
.layout{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:64px;align-items:start;}
.toc{position:sticky;top:150px;}
.toc-title{font-size:12.5px;letter-spacing:.08em;color:var(--c-muted);margin-bottom:18px;}
.toc ol{border-top:1px solid var(--c-line);}
.toc li{border-bottom:1px solid var(--c-line);}
.toc a{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 4px;font-size:14px;color:var(--c-ink-2);line-height:1.6;
  transition:color 180ms var(--e-out),padding-left 180ms var(--e-out);
}
.toc a .idx{font-family:var(--font-num);font-size:12.5px;color:var(--c-accent);padding-top:2px;}
.toc a:hover{color:var(--c-primary);padding-left:8px;}
.toc a.is-on{color:var(--c-primary);font-weight:500;}
.toc-note{
  margin-top:24px;padding:18px 20px;background:var(--c-bg-2);border-radius:var(--r-lg);
  font-size:13.5px;line-height:1.8;color:var(--c-ink-2);
}
.toc-note .num{color:var(--c-primary);}

/* ---------- 图文区块 ---------- */
.intro-block{
  padding:28px 32px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-xl);box-shadow:var(--sh-1);margin-bottom:56px;
}
.intro-block h2{font-size:20px;font-weight:600;line-height:1.5;}
.intro-block p{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2);}
.intro-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  font-size:12px;font-weight:500;border:1px solid var(--c-line-strong);border-radius:var(--r-sm);
  color:var(--c-ink-2);background:var(--c-bg);
}
.tag.is-primary{border-color:rgba(15,92,85,.32);color:var(--c-primary);background:var(--c-primary-soft);}
.tag.is-accent{border-color:rgba(185,130,59,.36);color:var(--c-accent);background:rgba(185,130,59,.08);}

.guide-section{padding:44px 0;border-top:1px solid var(--c-line);}
.guide-section:first-of-type{border-top:0;padding-top:0;}
.sec-head{display:flex;gap:16px;align-items:baseline;}
.sec-num{
  font-family:var(--font-num);font-size:34px;line-height:1;font-weight:500;
  color:var(--c-line-strong);letter-spacing:-.01em;flex:0 0 auto;
}
.sec-head h2{font-size:clamp(21px,2.1vw,27px);line-height:1.35;font-weight:600;}
.sec-body{margin-top:18px;padding-left:0;}
.sec-body p{font-size:15.5px;line-height:1.9;color:var(--c-ink-2);}
.sec-body p + p{margin-top:20px;}
.sec-body strong{color:var(--c-ink);font-weight:600;}

.sec-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:36px;align-items:start;margin-top:24px;}
.media{
  overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--c-line);
  background:var(--c-bg-2);
}
.media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 400ms var(--e-out);}
.media:hover img{transform:scale(1.03);}
.figcap{margin-top:10px;font-size:12.5px;color:var(--c-muted);text-align:center;}

.step-list{margin-top:22px;border-top:1px solid var(--c-line);}
.step-list li{
  display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--c-line);
  font-size:15px;line-height:1.85;color:var(--c-ink-2);
}
.step-list .s-idx{
  font-family:var(--font-num);font-size:13px;color:var(--c-primary);
  flex:0 0 34px;padding-top:3px;
}
.step-list b{color:var(--c-ink);font-weight:600;}

.pull{
  margin-top:24px;padding:20px 24px;
  border-left:2px solid var(--c-primary);background:var(--c-bg-2);border-radius:0 var(--r-lg) var(--r-lg) 0;
  font-size:15px;line-height:1.85;color:var(--c-ink-2);
}
.pull b{color:var(--c-ink);}

/* ---------- 提示对照表 ---------- */
.table-wrap{margin-top:24px;border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;background:var(--c-surface);}
table{width:100%;border-collapse:collapse;font-size:14.5px;}
thead th{
  background:var(--c-bg-2);text-align:left;font-size:13px;font-weight:500;
  color:var(--c-muted);letter-spacing:.04em;padding:12px 16px;border-bottom:1px solid var(--c-line);
}
tbody td{padding:14px 16px;border-bottom:1px solid var(--c-line);color:var(--c-ink-2);line-height:1.75;vertical-align:top;}
tbody tr:last-child td{border-bottom:0;}
tbody tr:hover td{background:var(--c-bg-2);}
td .tip-code{font-family:var(--font-num);font-size:13px;color:var(--c-ink);}

/* ---------- 自查清单 ---------- */
.check-card{
  margin-top:24px;padding:28px 32px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-xl);box-shadow:var(--sh-1);
}
.check-card h3{font-size:17px;font-weight:600;}
.check-list{margin-top:16px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 28px;}
.check-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.75;color:var(--c-ink-2);}
.check-list .box{
  flex:0 0 14px;width:14px;height:14px;margin-top:5px;
  border:1.5px solid var(--c-primary);border-radius:3px;
}

/* ---------- FAQ ---------- */
.faq-section{padding:72px 0;border-top:1px solid var(--c-line);}
.faq-section .sec-title{font-size:clamp(22px,2.2vw,30px);font-weight:600;line-height:1.35;}
.faq-section .sec-sub{margin-top:12px;font-size:15px;color:var(--c-muted);max-width:640px;}
.faq-list{margin-top:32px;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;font-size:17px;font-weight:500;color:var(--c-ink);
  transition:color 180ms var(--e-out);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-plus{
  position:relative;flex:0 0 16px;width:16px;height:16px;
  transition:transform 240ms var(--e-out);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-plus::before{left:0;top:7px;width:16px;height:1.5px;}
.faq-plus::after{top:0;left:7px;width:1.5px;height:16px;}
.faq-item[open] .faq-plus{transform:rotate(45deg);}
.faq-body{
  background:var(--c-bg-2);border-radius:var(--r-lg);
  padding:20px 24px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2);
  margin-bottom:16px;
}

/* ---------- CTA 深色带 ---------- */
.cta-band{
  background:var(--c-dark);color:#fff;border-radius:var(--r-xl);
  padding:48px;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;
}
.cta-band h2{font-size:clamp(21px,2.1vw,28px);font-weight:600;line-height:1.4;max-width:560px;}
.cta-band p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.72);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 24px;border-radius:var(--r-md);border:1px solid var(--c-primary);
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:500;
  cursor:pointer;transition:background 180ms var(--e-out),transform 180ms var(--e-out);
}
.btn-primary:hover{background:var(--c-primary-600);border-color:var(--c-primary-600);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-md);border:1px solid var(--c-primary);
  background:transparent;color:var(--c-primary);font-size:15px;font-weight:500;
  transition:background 180ms var(--e-out),color 180ms var(--e-out);
}
.btn-ghost:hover{background:var(--c-primary);color:#fff;}
.btn-dark{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 24px;border-radius:var(--r-md);border:1px solid #fff;
  background:#fff;color:var(--c-dark);font-size:15px;font-weight:500;
  transition:transform 180ms var(--e-out),background 180ms var(--e-out);
}
.btn-dark:hover{transform:translateY(-1px);background:#F2EFE9;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:500;color:var(--c-primary);
}
.btn-text .arrow{transition:transform 180ms var(--e-out);}
.btn-text:hover .arrow{transform:translateX(4px);}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px;}
.cta-band .btn-text{color:#8FD3C9;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:48px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:var(--c-muted);max-width:360px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul li{font-size:14px;color:var(--c-muted);line-height:1.9;margin-bottom:10px;}
.footer-col ul li a{color:var(--c-ink-2);transition:color 180ms var(--e-out);}
.footer-col ul li a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
.qr-box{
  width:96px;height:96px;border:1px solid var(--c-line-strong);border-radius:var(--r-md);
  background:
    repeating-linear-gradient(45deg,var(--c-bg) 0 6px,var(--c-bg-2) 6px 12px);
  margin-bottom:14px;
}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--c-muted);
}
.footer-bottom .num{letter-spacing:.02em;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 400ms var(--e-out),transform 400ms var(--e-out);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .layout{grid-template-columns:1fr;gap:40px;}
  .toc{position:static;}
  .toc ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:0;gap:0 24px;}
  .toc li{border-bottom:1px solid var(--c-line);}
  .sec-grid{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;}
  .check-list{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:block;}
  .site-header.nav-open .nav-links{
    display:flex;flex-direction:column;align-items:flex-start;gap:0;
    position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;
    background:#fff;padding:8px 20px 32px;overflow-y:auto;
    border-top:1px solid var(--c-line);
  }
  .site-header.nav-open .nav-links a{
    width:100%;padding:20px 0;font-size:22px;font-weight:500;
    border-bottom:1px solid var(--c-line);color:var(--c-ink);
  }
  .site-header.nav-open .nav-links a::after{display:none;}
  .site-header.nav-open .nav-links a.is-active{color:var(--c-primary);}
  .page-head{padding:64px 0 44px;}
  .head-facts{gap:10px 20px;font-size:13px;}
  .anchor-bar .bar-label{display:none;}
  .main-wrap{padding:44px 0 64px;}
  .intro-block{padding:22px 20px;}
  .guide-section{padding:34px 0;}
  .sec-num{font-size:26px;}
  .table-wrap{overflow-x:auto;}
  table{min-width:560px;}
  .faq-section{padding:52px 0;}
  .cta-band{padding:32px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-dark{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:36px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .page-title{font-size:27px;}
  .page-lede{font-size:15.5px;}
  .toc ol{grid-template-columns:1fr;}
  .step-list li{flex-direction:column;gap:6px;}
  .step-list .s-idx{flex:none;}
  .faq-item summary{font-size:16px;gap:12px;}
  .faq-body{padding:16px 18px;font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --c-ink:#14181A;
  --c-ink-2:#3D4547;
  --c-muted:#7C8483;
  --c-line:#E4E0D8;
  --c-line-strong:#CFC9BD;
  --c-bg:#F7F5F0;
  --c-bg-2:#EFEBE3;
  --c-surface:#FFFFFF;
  --c-primary:#0F5C55;
  --c-primary-600:#0B4741;
  --c-primary-soft:#E3EFEC;
  --c-accent:#B9823B;
  --c-accent-soft:#F5EADA;
  --c-ok:#2F7D5F;
  --c-warn:#B9823B;
  --c-error:#A8443A;
  --c-dark:#101415;

  --r-xs:4px;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:14px;
  --r-full:999px;

  --sh-1:0 1px 2px rgba(20,24,26,.04);
  --sh-2:0 8px 24px -12px rgba(20,24,26,.12);
  --sh-3:0 18px 40px -24px rgba(20,24,26,.20);

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;

  --e-out:cubic-bezier(.22,.61,.36,1);
  --header-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:600;letter-spacing:.01em;}
table{border-collapse:collapse;width:100%;}

:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:3px;
  border-radius:var(--r-xs);
}

.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

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

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:var(--header-h);
  background:rgba(247,245,240,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:height .24s var(--e-out),background .24s var(--e-out);
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(247,245,240,.94);
}
.header-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--c-ink);
  white-space:nowrap;
}
.brand-mark{
  position:relative;
  width:20px;height:20px;
  border:1.5px solid var(--c-primary);
  border-radius:6px;
  flex:none;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:5px;
  border-radius:2px;
  background:var(--c-primary);
  transition:transform .24s var(--e-out);
}
.brand:hover .brand-mark::after{transform:scale(.6);}

.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  font-weight:500;
  line-height:1;
  color:var(--c-ink-2);
  padding:6px 0;
  transition:color .18s var(--e-out);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--c-primary);
  transition:width .24s var(--e-out);
}
.nav-links a:hover{color:var(--c-ink);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--c-ink);}
.nav-links a.is-active::after{width:100%;}

.nav-cta{
  flex:none;
  font-size:14px;
  padding:10px 18px;
}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--c-line-strong);
  border-radius:var(--r-sm);
  background:transparent;
  padding:0;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:11px;right:11px;
  height:1.5px;
  background:var(--c-ink);
  transition:transform .24s var(--e-out),opacity .18s var(--e-out);
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:20px;}
.nav-toggle span:nth-child(3){top:25px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  position:fixed;
  top:var(--header-h);
  left:0;right:0;
  bottom:0;
  background:var(--c-surface);
  z-index:55;
  padding:8px 24px 40px;
  overflow-y:auto;
  transform:translateY(-8px);
  opacity:0;
  pointer-events:none;
  transition:opacity .22s var(--e-out),transform .22s var(--e-out);
}
.mobile-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:20px;
  font-weight:500;
  padding:22px 0;
  border-bottom:1px solid var(--c-line);
  color:var(--c-ink-2);
}
.mobile-drawer a.is-active{color:var(--c-primary);}
.mobile-drawer a.is-active::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-primary);
  margin-right:10px;
}
.mobile-drawer .drawer-cta{
  margin-top:28px;
  width:100%;
  justify-content:center;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:500;
  line-height:1;
  padding:14px 24px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  transition:background .18s var(--e-out),color .18s var(--e-out),
             border-color .18s var(--e-out),transform .18s var(--e-out),
             box-shadow .18s var(--e-out);
}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--c-primary);
  border-color:var(--c-primary);
}
.btn-ghost:hover{background:var(--c-primary);color:#fff;}
.btn-dark{
  background:#fff;
  color:var(--c-dark);
}
.btn-dark:hover{background:var(--c-primary-soft);transform:translateY(-1px);}
.btn-text{
  padding:0;
  color:var(--c-primary);
  font-weight:500;
  background:none;
  border:none;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.btn-text .arrow{transition:transform .18s var(--e-out);}
.btn-text:hover .arrow{transform:translateX(4px);}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px;}

/* ============ 通用排版 ============ */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--bg2{background:var(--c-bg-2);}

.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:500;
  letter-spacing:.06em;
  color:var(--c-primary);
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:24px;height:2px;
  background:var(--c-accent);
  border-radius:2px;
}
h2.section-title{
  font-size:clamp(24px,2.4vw,36px);
  line-height:1.25;
  color:var(--c-ink);
}
.section-sub{
  margin-top:16px;
  font-size:16px;
  line-height:1.85;
  color:var(--c-muted);
}

/* ============ 页头 ============ */
.page-hero{
  padding:calc(var(--header-h) + 64px) 0 0;
  background:
    linear-gradient(180deg,rgba(15,92,85,.05) 0%,rgba(247,245,240,0) 62%),
    var(--c-bg);
  position:relative;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(20,24,26,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(20,24,26,.035) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}

.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:var(--c-muted);
  margin-bottom:28px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--c-muted);transition:color .18s var(--e-out);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-line-strong);}
.breadcrumb .current{color:var(--c-primary);}

.page-hero h1{
  font-size:clamp(30px,4.4vw,54px);
  line-height:1.15;
  letter-spacing:.01em;
  max-width:900px;
  color:var(--c-ink);
}
.page-hero h1 em{
  font-style:normal;
  color:var(--c-primary);
  position:relative;
  white-space:nowrap;
}
.page-hero h1 em::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:4px;
  height:2px;
  background:var(--c-accent);
  opacity:.5;
}
.hero-lead{
  margin-top:24px;
  max-width:680px;
  font-size:17px;
  line-height:1.9;
  color:var(--c-ink-2);
}
.hero-lead strong{color:var(--c-ink);font-weight:500;}

.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}

.badge{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 8px;
  font-size:12px;
  font-weight:500;
  line-height:1;
  border-radius:var(--r-xs);
  border:1px solid var(--c-line-strong);
  color:var(--c-muted);
  background:var(--c-surface);
  white-space:nowrap;
}
.badge--primary{border-color:rgba(15,92,85,.35);color:var(--c-primary);background:var(--c-primary-soft);}
.badge--accent{border-color:rgba(185,130,59,.35);color:var(--c-accent);background:var(--c-accent-soft);}
.badge--ok{border-color:rgba(47,125,95,.32);color:var(--c-ok);background:rgba(47,125,95,.08);}
.badge--warn{border-color:rgba(168,68,58,.30);color:var(--c-error);background:rgba(168,68,58,.07);}

/* 锚点导航 */
.anchor-bar{
  position:sticky;
  top:var(--header-h);
  z-index:40;
  margin-top:56px;
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.anchor-nav{
  display:flex;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  padding:12px 0;
}
.anchor-nav::-webkit-scrollbar{display:none;}
.anchor-nav a{
  flex:none;
  font-size:14px;
  font-weight:500;
  color:var(--c-ink-2);
  padding:7px 14px;
  border-radius:var(--r-full);
  border:1px solid transparent;
  transition:color .18s var(--e-out),background .18s var(--e-out),border-color .18s var(--e-out);
}
.anchor-nav a:hover{color:var(--c-primary);border-color:var(--c-line-strong);}
.anchor-nav a.is-current{
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-color:rgba(15,92,85,.22);
}

/* ============ 指标双列线框 ============ */
.metric-strip{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line-strong);
  border-radius:var(--r-lg);
  overflow:hidden;
}
.metric{
  background:var(--c-surface);
  padding:32px 28px;
  transition:background .2s var(--e-out);
}
.metric:hover{background:#FCFBF8;}
.metric .bar{
  width:24px;height:2px;
  background:var(--c-primary);
  border-radius:2px;
  margin-bottom:18px;
}
.metric-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:clamp(34px,4vw,48px);
  line-height:1.05;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--c-ink);
  display:flex;
  align-items:baseline;
  gap:6px;
}
.metric-num small{
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:500;
  color:var(--c-muted);
  letter-spacing:0;
}
.metric-label{
  margin-top:12px;
  font-size:15px;
  font-weight:500;
  color:var(--c-ink);
}
.metric-desc{
  margin-top:8px;
  font-size:13.5px;
  line-height:1.75;
  color:var(--c-muted);
}

/* ============ 对照表 ============ */
.table-wrap{
  border:1px solid var(--c-line-strong);
  border-radius:var(--r-lg);
  background:var(--c-surface);
  overflow:hidden;
}
.cmp-table{font-size:15px;}
.cmp-table thead th{
  font-size:13px;
  font-weight:500;
  letter-spacing:.04em;
  color:var(--c-muted);
  text-align:left;
  padding:16px;
  background:var(--c-bg-2);
  border-bottom:1px solid var(--c-line-strong);
  white-space:nowrap;
}
.cmp-table tbody td{
  padding:20px 16px;
  border-bottom:1px solid var(--c-line);
  color:var(--c-ink-2);
  line-height:1.75;
  vertical-align:top;
}
.cmp-table tbody tr:last-child td{border-bottom:none;}
.cmp-table tbody tr{transition:background .18s var(--e-out);}
.cmp-table tbody tr:hover{background:var(--c-bg-2);}
.cmp-table .cell-strong{
  color:var(--c-ink);
  font-weight:500;
}
.cmp-table .cell-time{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  color:var(--c-ink);
  white-space:nowrap;
}
.table-note{
  margin-top:16px;
  font-size:13.5px;
  line-height:1.8;
  color:var(--c-muted);
}

/* ============ 处理顺序 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--c-line);
}
.step{
  position:relative;
  padding:36px 28px 8px 0;
  border-right:1px solid var(--c-line);
}
.step:last-child{border-right:none;padding-right:0;}
.step-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:34px;
  line-height:1;
  font-weight:600;
  color:var(--c-line-strong);
  transition:color .24s var(--e-out);
}
.step:hover .step-num{color:var(--c-primary);}
.step-title{
  margin-top:16px;
  font-size:19px;
  font-weight:600;
  color:var(--c-ink);
}
.step-text{
  margin-top:10px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--c-muted);
}
.step::before{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:0;height:2px;
  background:var(--c-primary);
  transition:width .32s var(--e-out);
}
.step:hover::before{width:56px;}

/* ============ 场景卡片 ============ */
.grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .22s var(--e-out),box-shadow .22s var(--e-out);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.card-media{
  position:relative;
  aspect-ratio:16 / 10;
  overflow:hidden;
  background:var(--c-bg-2);
}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s var(--e-out);
}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.card-title{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  color:var(--c-ink);
}
.card-text{
  font-size:14.5px;
  line-height:1.8;
  color:var(--c-muted);
  flex:1;
}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:4px;
}

/* ============ 图文对照区 ============ */
.split{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.split-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-bg-2);
  aspect-ratio:4 / 3;
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-list{
  border-top:1px solid var(--c-line);
}
.split-item{
  display:flex;
  gap:20px;
  padding:24px 0;
  border-bottom:1px solid var(--c-line);
  transition:background .18s var(--e-out);
}
.split-item:hover{background:var(--c-bg-2);}
.split-item .idx{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:20px;
  font-weight:600;
  color:var(--c-line-strong);
  line-height:1.5;
  flex:none;
  width:32px;
}
.split-item:hover .idx{color:var(--c-accent);}
.split-item h3{
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  line-height:1.55;
}
.split-item p{
  margin-top:8px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--c-muted);
}

/* ============ FAQ ============ */
.faq-list{
  border-top:1px solid var(--c-line);
  max-width:900px;
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:24px;
  padding:24px 0;
  font-size:17px;
  font-weight:500;
  line-height:1.6;
  color:var(--c-ink);
  cursor:pointer;
  transition:color .18s var(--e-out);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item summary .plus{
  flex:none;
  position:relative;
  width:16px;height:16px;
  margin-top:6px;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  border-radius:2px;
  transition:transform .24s var(--e-out),opacity .24s var(--e-out);
}
.faq-item summary .plus::before{left:0;top:7px;width:16px;height:1.5px;}
.faq-item summary .plus::after{left:7px;top:0;width:1.5px;height:16px;}
.faq-item[open] summary .plus::after{transform:rotate(90deg);opacity:0;}
.faq-item[open] summary .plus::before{transform:rotate(180deg);}
.faq-answer{
  background:var(--c-bg-2);
  border-radius:var(--r-md);
  padding:20px 24px;
  margin-bottom:24px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--c-ink-2);
}
.faq-answer strong{color:var(--c-ink);font-weight:500;}

/* ============ 深色 CTA ============ */
.cta-band{
  background:var(--c-dark);
  color:#fff;
  padding:72px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
}
.cta-band h2{
  font-size:clamp(22px,2.2vw,30px);
  line-height:1.3;
  color:#fff;
}
.cta-band p{
  margin-top:14px;
  font-size:15px;
  line-height:1.85;
  color:rgba(255,255,255,.68);
  max-width:640px;
}
.cta-meta{
  display:flex;
  flex-wrap:wrap;
  gap:24px;
  margin-top:20px;
  font-size:13.5px;
  color:rgba(255,255,255,.55);
}
.cta-meta span{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.cta-meta .dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-accent);
}
.cta-actions{
  display:flex;
  gap:14px;
  flex:none;
  flex-wrap:wrap;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-bg-2);
  border-top:1px solid var(--c-line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:1.9;
  color:var(--c-muted);
  max-width:340px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--c-ink);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li{
  font-size:13.5px;
  line-height:1.7;
  color:var(--c-muted);
}
.footer-col a{
  color:var(--c-ink-2);
  transition:color .18s var(--e-out);
}
.footer-col a:hover{color:var(--c-primary);}
.qr-box{
  width:88px;height:88px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line-strong);
  background:
    repeating-linear-gradient(45deg,rgba(207,201,189,.5) 0 5px,transparent 5px 10px),
    var(--c-surface);
  margin-bottom:14px;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 28px;
  border-top:1px solid var(--c-line);
  font-size:12.5px;
  color:var(--c-muted);
}

/* ============ 入场动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s var(--e-out),transform .5s var(--e-out);
}
.reveal.is-visible{opacity:1;transform:none;}

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

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:block;}
  .mobile-drawer{display:block;}
  .split{grid-template-columns:1fr;gap:32px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step{border-right:none;border-bottom:1px solid var(--c-line);padding:28px 0;}
  .step:nth-child(odd){padding-right:24px;border-right:1px solid var(--c-line);}
  .step:last-child,.step:nth-last-child(2){border-bottom:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}

@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section--tight{padding:52px 0;}
  .section-head{margin-bottom:32px;}
  .page-hero{padding-top:calc(var(--header-h) + 40px);}
  .hero-lead{font-size:16px;}
  .metric-strip{grid-template-columns:1fr;}
  .metric{padding:24px 22px;}
  .grid-3{grid-template-columns:1fr;}
  .table-wrap{border:none;background:transparent;overflow:visible;}
  .cmp-table{display:block;}
  .cmp-table thead{display:none;}
  .cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%;}
  .cmp-table tr{
    background:var(--c-surface);
    border:1px solid var(--c-line-strong);
    border-radius:var(--r-md);
    margin-bottom:16px;
    overflow:hidden;
  }
  .cmp-table tbody td{
    border-bottom:1px dashed var(--c-line);
    padding:14px 18px;
  }
  .cmp-table tbody td:last-child{border-bottom:none;}
  .cmp-table tbody td::before{
    content:attr(data-label);
    display:block;
    font-size:12.5px;
    color:var(--c-muted);
    margin-bottom:4px;
    letter-spacing:.04em;
  }
  .cmp-table tbody tr:hover{background:var(--c-surface);}
  .steps{grid-template-columns:1fr;}
  .step{padding:24px 0 !important;border-right:none !important;border-bottom:1px solid var(--c-line);}
  .step:last-child{border-bottom:none;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:520px){
  .page-hero h1{font-size:28px;}
  .page-hero h1 em::after{display:none;}
  .hero-tags{gap:8px;}
  .metric-num{font-size:34px;}
  .faq-item summary{font-size:16px;gap:16px;}
  .faq-answer{padding:16px 18px;}
  .btn{padding:13px 18px;font-size:14.5px;}
  .card-body{padding:20px;}
}