/* roulang page: index */
:root{
  --ink:#0F1512;
  --muted:#6B7269;
  --brand-900:#0B3A2E;
  --brand-700:#14563F;
  --brand-500:#1E7A5A;
  --accent:#C6F24E;
  --accent-ink:#0F1512;
  --accent-2:#E8A87C;
  --paper:#FAF8F3;
  --card:#FFFFFF;
  --line:#E4E0D8;
  --ring:rgba(30,122,90,.18);
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,21,18,.04), 0 10px 28px -14px rgba(15,21,18,.10);
  --shadow-2:0 2px 4px rgba(15,21,18,.06), 0 20px 44px -18px rgba(11,58,46,.22);
  --ease:cubic-bezier(.2,.8,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-500);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-700)}
button{font:inherit;cursor:pointer;color:inherit}
input{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.22}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
time{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

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

/* ---------- section base ---------- */
.section{padding:104px 0;position:relative}
.section--tight{padding:72px 0}
.section--line{border-top:1px solid var(--line)}
.section--white{background:#fff}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;margin-bottom:52px}
.sec-title{font-size:clamp(1.75rem,3vw,2.3rem);letter-spacing:-.015em;font-weight:700;position:relative;padding-top:22px}
.sec-title::before{content:"";position:absolute;left:0;top:0;width:40px;height:3px;border-radius:2px;background:var(--accent)}
.sec-desc{margin-top:14px;font-size:15.5px;color:var(--muted);max-width:620px}
.sec-link{font-size:14.5px;font-weight:600;color:var(--brand-500);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.sec-link::after{content:"→";transition:transform .2s var(--ease)}
.sec-link:hover::after{transform:translateX(3px)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--radius-btn);border:1px solid transparent;font-size:15px;font-weight:600;letter-spacing:.01em;transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);white-space:nowrap}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{background:#d6fa6d;color:var(--accent-ink);transform:scale(1.02)}
.btn-accent:active{transform:scale(.99)}
.btn-brand{background:var(--brand-500);color:#fff}
.btn-brand:hover{background:var(--brand-700);color:#fff}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-500)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:70;background:rgba(250,248,243,.94);border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease),background .24s var(--ease)}
.site-header.is-scrolled{background:#fff;box-shadow:0 8px 26px -20px rgba(15,21,18,.45)}
.header-inner{display:flex;align-items:center;gap:30px;height:68px}
.brand{display:flex;align-items:center;gap:10px; flex:none;color:var(--ink);font-size:17px;font-weight:800;letter-spacing:-.015em;line-height:1}
.brand:hover{color:var(--brand-700)}
.brand-mark{width:30px;height:30px;flex:none;color:var(--brand-500)}
.brand-mark .mark-fill{fill:var(--brand-500)}
.brand-mark .mark-line{fill:none;stroke:var(--accent);stroke-width:1.6}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:26px;flex:1;min-width:0}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink);padding:6px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--accent);transform:scaleX(0);transform-origin:left center;transition:transform .26s var(--ease)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-500);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;flex:none}
.search-box{display:flex;align-items:center;gap:9px;height:40px;width:244px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px var(--ring)}
.search-box svg{width:16px;height:16px;flex:none;color:var(--muted)}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink);line-height:1}
.search-box input::placeholder{color:#9CA29B}
.menu-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;align-items:center;justify-content:center;transition:border-color .18s var(--ease)}
.menu-toggle:hover{border-color:var(--brand-500)}
.menu-toggle span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px}
.menu-toggle span::before{top:-5px}
.menu-toggle span::after{top:5px}

/* ---------- drawer ---------- */
.drawer-overlay{position:fixed;inset:0;background:rgba(15,21,18,.45);opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s;z-index:88}
.drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(330px,88vw);background:#fff;z-index:92;transform:translateX(103%);transition:transform .3s var(--ease);display:flex;flex-direction:column;padding:24px 22px;overflow-y:auto}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:18px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-nav a{padding:15px 2px;border-bottom:1px solid var(--line);font-size:15.5px;color:var(--ink);font-weight:500}
.drawer-nav a.active{color:var(--brand-500);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:24px}

/* ---------- hero ---------- */
.hero{position:relative;padding:76px 0 92px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 88% 8%,rgba(30,122,90,.07),transparent 58%);pointer-events:none}
.hero::after{content:"";position:absolute;left:-120px;bottom:-140px;width:360px;height:360px;border-radius:50%;border:1px dashed rgba(30,122,90,.14);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:rgba(30,122,90,.09);color:var(--brand-500);font-size:13px;font-weight:600;letter-spacing:.03em;margin-bottom:24px}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.hero-title{font-size:clamp(2.15rem,4.4vw,3.7rem);font-weight:800;letter-spacing:-.025em;line-height:1.08;margin-bottom:24px}
.hero-title .mark{box-shadow:inset 0 -.34em 0 var(--accent)}
.hero-lead{font-size:18px;line-height:1.85;color:var(--muted);max-width:580px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px}
.hero-note{font-size:13px;color:var(--muted);letter-spacing:.02em}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:20px;box-shadow:var(--shadow-2)}
.hero-visual::before{content:"";position:absolute;right:-14px;top:-14px;width:120px;height:120px;border-radius:18px;border:1px solid rgba(30,122,90,.20);pointer-events:none}
.hero-chip{position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--accent);border-radius:12px;padding:11px 16px;box-shadow:var(--shadow-1);font-size:13px;font-weight:600;color:var(--brand-700);letter-spacing:.02em}
.hero-chip span{display:block;font-size:12px;font-weight:500;color:var(--muted);margin-top:2px}

/* ---------- trust ---------- */
.trust{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{padding:34px 28px}
.trust-item + .trust-item{border-left:1px solid var(--line)}
.trust-num{font-size:clamp(1.6rem,2.8vw,2.1rem);font-weight:800;letter-spacing:-.02em;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.1}
.trust-label{font-size:13.5px;color:var(--muted);margin-top:8px;line-height:1.7}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:44px}
.step{border-top:1px solid var(--line);padding-top:28px}
.step-num{font-size:64px;font-weight:800;line-height:1;letter-spacing:-.04em;font-variant-numeric:tabular-nums;color:var(--accent);-webkit-text-stroke:1.4px rgba(11,58,46,.75);margin-bottom:18px}
.step h3{font-size:20px;font-weight:600;margin-bottom:12px}
.step p{font-size:15px;color:var(--muted);line-height:1.85;max-width:340px}
.step-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--brand-500)}
.step-link::after{content:"→";transition:transform .2s var(--ease)}
.step-link:hover::after{transform:translateX(3px)}

/* ---------- capability cards ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.cap-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);display:flex;flex-direction:column;gap:14px}
.cap-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ring)}
.cap-card.span-7{grid-column:span 7}
.cap-card.span-5{grid-column:span 5}
.cap-icon{width:42px;height:42px;border-radius:12px;background:rgba(30,122,90,.09);display:flex;align-items:center;justify-content:center;color:var(--brand-500);flex:none}
.cap-icon svg{width:20px;height:20px}
.cap-card h3{font-size:19px;font-weight:600}
.cap-card p{font-size:14.5px;color:var(--muted);line-height:1.85}
.cap-list{margin-top:4px;border-top:1px solid var(--line);padding-top:14px}
.cap-list li{display:flex;gap:10px;font-size:14px;color:var(--muted);padding:5px 0}
.cap-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;margin-top:11px}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.proof-main{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.proof-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ring)}
.proof-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.proof-body{padding:28px;display:flex;flex-direction:column;gap:12px}
.proof-body h3{font-size:21px}
.proof-body p{font-size:14.5px;color:var(--muted)}
.proof-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.proof-mini{display:grid;grid-template-columns:132px 1fr;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:18px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);align-items:center}
.proof-mini:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ring)}
.proof-mini img{width:132px;height:104px;object-fit:cover;border-radius:12px}
.proof-mini h4{font-size:16.5px;font-weight:600;margin-bottom:8px}
.proof-mini p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ---------- news (CMS) ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;display:grid;grid-template-columns:196px 1fr;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ring)}
.news-thumb{display:block;background:#EFEDE7;overflow:hidden;min-height:180px}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px 24px;display:flex;flex-direction:column;gap:10px;min-width:0}
.badge{display:inline-flex;align-items:center;align-self:flex-start;height:24px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(30,122,90,.10);color:var(--brand-500);letter-spacing:.01em}
.badge-warm{background:rgba(232,168,124,.20);color:#8A5326}
.news-title{font-size:18px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a{color:var(--ink)}
.news-title a:hover{color:var(--brand-500)}
.news-sum{font-size:14px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);letter-spacing:.03em}
.news-more{font-size:13.5px;font-weight:600;color:var(--brand-500)}
.news-empty{border:1px dashed var(--line);border-radius:var(--radius-card);padding:56px 24px;text-align:center;background:#fff;display:flex;flex-direction:column;align-items:center;gap:14px}
.news-empty svg{width:34px;height:34px;color:var(--brand-500)}
.news-empty p{font-size:15px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;background:none;border:0;text-align:left;padding:26px 0;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6}
.faq-q:hover{color:var(--brand-500)}
.faq-icon{position:relative;width:18px;height:18px;flex:none;transition:transform .26s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-500);border-radius:2px}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a-inner{padding:0 0 28px;font-size:15px;line-height:1.9;color:var(--muted);max-width:860px}

/* ---------- CTA ---------- */
.cta-band{position:relative;background:var(--brand-900);border-radius:24px;padding:62px 64px;display:flex;align-items:center;justify-content:space-between;gap:44px;overflow:hidden}
.cta-band::before,.cta-band::after{content:"";position:absolute;top:14%;height:72%;width:1px;background:rgba(198,242,78,.30)}
.cta-band::before{left:34px}
.cta-band::after{right:34px}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{font-size:clamp(1.6rem,3vw,2.3rem);color:var(--accent);font-weight:800;letter-spacing:-.015em;margin-bottom:14px}
.cta-copy p{color:rgba(255,255,255,.78);font-size:15.5px;max-width:560px;line-height:1.85}
.cta-action{position:relative;z-index:1;flex:none}

/* ---------- footer ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding-top:76px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.015em}
.footer-brand .brand-mark{width:28px;height:28px}
.footer-about{font-size:14px;color:var(--muted);line-height:1.9;max-width:330px}
.footer-col h4{font-size:13px;letter-spacing:.08em;font-weight:700;color:var(--ink);margin-bottom:18px}
.footer-col a{display:block;font-size:14.5px;color:var(--muted);padding:6px 0;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-col a:hover{color:var(--brand-500);transform:translateX(2px)}
.footer-info{font-size:14px;color:var(--muted);line-height:1.95}
.footer-info strong{display:block;color:var(--ink);font-weight:600;margin-bottom:6px;font-size:14.5px}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);letter-spacing:.02em}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .main-nav{display:none}
  .search-box{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{gap:16px;justify-content:space-between}
  .header-actions{gap:12px}
  .section{padding:80px 0}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual::before{display:none}
  .hero-chip{left:12px;bottom:14px}
  .cap-card.span-7,.cap-card.span-5{grid-column:span 12}
  .proof-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .cta-band{padding:48px 44px;flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .brand{font-size:15px}
  .brand-mark{width:26px;height:26px}
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .sec-head{margin-bottom:34px}
  .hero-title{font-size:clamp(1.9rem,7.6vw,2.4rem)}
  .hero-lead{font-size:16.5px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .trust-grid{grid-template-columns:1fr 1fr}
  .trust-item{padding:22px 20px}
  .trust-item + .trust-item{border-left:0}
  .trust-item:nth-child(2n){border-left:1px solid var(--line)}
  .trust-item:nth-child(n+3){border-top:1px solid var(--line)}
  .steps{grid-template-columns:1fr;gap:0}
  .step{border-top:0;border-left:1px solid var(--line);padding:0 0 34px 26px;position:relative}
  .step:last-child{padding-bottom:0;border-left-color:transparent}
  .step::before{content:"";position:absolute;left:-6px;top:14px;width:11px;height:11px;border-radius:50%;background:var(--accent);border:2px solid var(--brand-900)}
  .step-num{font-size:44px;margin-bottom:10px}
  .step p{max-width:none}
  .cap-card{padding:24px}
  .proof-mini{grid-template-columns:1fr}
  .proof-mini img{width:100%;height:150px}
  .news-card{grid-template-columns:1fr}
  .news-thumb{min-height:0}
  .news-thumb img{aspect-ratio:16/10;height:auto}
  .cta-band{padding:40px 28px;gap:26px}
  .cta-band::before,.cta-band::after{display:none}
  .cta-action{width:100%}
  .cta-action .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
    --ink:#0F1512;
    --muted:#6B7269;
    --brand-900:#0B3A2E;
    --brand-700:#14563F;
    --brand-500:#1E7A5A;
    --accent:#C6F24E;
    --accent-ink:#0F1512;
    --accent-2:#E8A87C;
    --paper:#FAF8F3;
    --card:#FFFFFF;
    --line:#E4E0D8;
    --ring:rgba(30,122,90,.18);
    --radius-card:16px;
    --radius-btn:10px;
    --shadow-1:0 1px 2px rgba(15,21,18,.04), 0 10px 28px -14px rgba(15,21,18,.10);
    --shadow-2:0 2px 4px rgba(15,21,18,.06), 0 20px 44px -18px rgba(11,58,46,.22);
    --ease:cubic-bezier(.2,.8,.2,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    font-variant-numeric:tabular-nums;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol,blockquote,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

  /* ---------- 阅读进度条 ---------- */
  .read-progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:200;transition:width .12s linear}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:120;
    background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .28s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 8px 26px -20px rgba(11,58,46,.45)}
  .header-inner{display:flex;align-items:center;gap:20px;height:68px}
  .brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
  .brand-mark{width:28px;height:28px;flex:0 0 28px}
  .mark-fill{fill:var(--brand-500)}
  .mark-line{fill:none;stroke:var(--accent);stroke-width:1.6;stroke-linejoin:round}
  .main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
  .nav-link{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink);transition:color .2s var(--ease)}
  .nav-link::after{
    content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--accent);
    transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease);
  }
  .nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
  .nav-link:hover,.nav-link.active{color:var(--brand-500)}
  .header-tools{display:flex;align-items:center;gap:12px;margin-left:8px}
  .header-search{position:relative;display:flex;align-items:center}
  .header-search svg{position:absolute;left:12px;width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:1.7}
  .header-search input{
    width:236px;height:40px;padding:0 14px 0 34px;
    border:1px solid var(--line);border-radius:var(--radius-btn);
    background:#fff;font-size:14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .header-search input::placeholder{color:#9AA095}
  .header-search input:focus{border-color:var(--brand-500);box-shadow:0 0 0 4px var(--ring);outline:none}
  .nav-toggle{
    display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-btn);
    background:#fff;cursor:pointer;align-items:center;justify-content:center;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
  .nav-toggle span::before{top:-6px}
  .nav-toggle span::after{top:6px}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .btn-accent{background:var(--accent);color:var(--accent-ink)}
  .btn-accent:hover{background:#D6FA6C;transform:scale(1.02)}
  .btn-accent:active{transform:scale(.99)}
  .btn-brand{background:var(--brand-500);color:#fff}
  .btn-brand:hover{background:var(--brand-700)}
  .btn-brand:active{transform:scale(.99)}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
  .btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-500)}
  .btn-sm{height:40px;padding:0 20px}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-500);transition:gap .2s var(--ease)}
  .link-arrow:hover{gap:10px}

  /* ---------- 移动抽屉 ---------- */
  .drawer-mask{position:fixed;inset:0;background:rgba(15,21,18,.42);opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s;z-index:150}
  .drawer-mask.open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:min(330px,86vw);background:#fff;z-index:160;
    transform:translateX(102%);transition:transform .32s var(--ease);
    display:flex;flex-direction:column;padding:22px 20px;border-left:1px solid var(--line);
  }
  .drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
  .drawer-close{width:38px;height:38px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;cursor:pointer;font-size:18px;line-height:1}
  .drawer-nav{display:flex;flex-direction:column;gap:4px;padding:18px 0}
  .drawer-nav a{padding:12px 10px;border-radius:10px;font-size:15px;font-weight:500;transition:background-color .2s var(--ease),color .2s var(--ease)}
  .drawer-nav a:hover{background:#F2F6F0;color:var(--brand-500)}
  .drawer-nav a.active{color:var(--brand-500);background:#F2F6F0}
  .drawer-search{position:relative;display:flex;align-items:center;margin-bottom:12px}
  .drawer-search input{width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;font-size:14px}
  .drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
  .drawer-foot .btn{width:100%}

  /* ---------- 面包屑 ---------- */
  .breadcrumb-bar{padding:22px 0 0}
  .breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.04em;color:var(--muted);flex-wrap:wrap}
  .breadcrumb a{transition:color .2s var(--ease)}
  .breadcrumb a:hover{color:var(--brand-500)}
  .breadcrumb .sep{color:#C3BFB4}
  .breadcrumb .current{max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  /* ---------- 文章头部 ---------- */
  .article-head{padding:26px 0 34px;border-bottom:1px solid var(--line)}
  .article-head-inner{max-width:820px}
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
    font-size:13px;font-weight:600;background:rgba(30,122,90,.10);color:var(--brand-500);
  }
  .badge-warm{background:rgba(232,168,124,.16);color:#9A5A2C}
  .article-title{
    margin-top:16px;
    font-size:clamp(1.75rem,3.1vw,2.65rem);
    font-weight:800;line-height:1.24;letter-spacing:-.02em;
  }
  .article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:18px;font-size:13px;letter-spacing:.04em;color:var(--muted)}
  .article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9C4B8}
  .article-cover{margin-top:30px;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:#EFEDE6}
  .article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
  .article-cover figcaption{padding:12px 18px;font-size:13px;color:var(--muted);background:#fff;border-top:1px solid var(--line)}

  /* ---------- 正文布局 ---------- */
  .article-shell{
    display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:60px;align-items:start;
    padding:56px 0 0;
  }
  .article-body{max-width:760px}
  .prose{font-size:16px;line-height:1.9;color:#1B221D}
  .prose p{margin:0 0 1.2em}
  .prose h2{
    position:relative;margin:48px 0 18px;padding-top:14px;
    font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;line-height:1.3;color:var(--ink);
  }
  .prose h2::before{content:"";position:absolute;top:0;left:0;width:40px;height:3px;background:var(--accent);border-radius:2px}
  .prose h3{margin:32px 0 12px;font-size:1.15rem;font-weight:600;line-height:1.4;color:var(--ink)}
  .prose ul,.prose ol{margin:0 0 1.3em;padding-left:2px}
  .prose li{position:relative;padding-left:22px;margin-bottom:10px}
  .prose ul>li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--accent)}
  .prose ol{counter-reset:li}
  .prose ol>li{counter-increment:li}
  .prose ol>li::before{content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;font-size:13px;font-weight:700;color:var(--brand-500)}
  .prose blockquote{
    margin:26px 0;padding:18px 22px;border-left:3px solid var(--accent);
    background:var(--paper);border-radius:8px;color:#2A322C;
  }
  .prose blockquote p:last-child{margin-bottom:0}
  .prose img{border-radius:12px;margin:24px 0 8px;width:100%}
  .prose figure{margin:26px 0}
  .prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
  .prose code{
    font-family:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
    font-size:.92em;background:#F1F3EC;border-radius:6px;padding:2px 6px;
  }
  .prose pre{
    background:#F1F3EC;border:1px solid var(--line);border-radius:12px;
    padding:16px 18px;overflow:auto;margin:0 0 1.4em;
  }
  .prose pre code{background:none;padding:0;font-size:.9em}
  .prose a{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px}

  /* ---------- 空态 ---------- */
  .empty-state{
    max-width:640px;margin:0 auto;padding:52px 26px;text-align:center;
    border:1px dashed #CFCABE;border-radius:var(--radius-card);background:#fff;
  }
  .empty-state svg{width:40px;height:40px;margin:0 auto 14px;stroke:var(--brand-500);fill:none;stroke-width:1.6}
  .empty-state h2{font-size:1.15rem;font-weight:700;margin-bottom:6px}
  .empty-state p{font-size:14px;color:var(--muted);margin-bottom:20px}

  /* ---------- 侧栏 ---------- */
  .article-side{position:sticky;top:92px;display:flex;flex-direction:column;gap:22px}
  .side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1)}
  .side-title{font-size:13px;letter-spacing:.08em;font-weight:700;color:var(--muted);margin-bottom:14px}
  .side-list{display:flex;flex-direction:column;gap:12px}
  .side-list a{display:flex;gap:10px;font-size:14px;line-height:1.6;transition:color .2s var(--ease),transform .2s var(--ease)}
  .side-list a:hover{color:var(--brand-500);transform:translateX(2px)}
  .side-list .num{font-weight:700;color:var(--brand-500);font-size:13px;flex:0 0 22px}
  .side-meta{display:flex;flex-direction:column;gap:12px;font-size:13px;color:var(--muted)}
  .side-meta .row{display:flex;justify-content:space-between;gap:12px;padding-bottom:10px;border-bottom:1px solid var(--line)}
  .side-meta .row:last-child{border-bottom:none;padding-bottom:0}
  .side-meta strong{color:var(--ink);font-weight:600}

  /* ---------- 文末区域 ---------- */
  .article-foot{margin-top:56px;padding-top:26px;border-top:1px solid var(--line)}
  .tag-row{display:flex;flex-wrap:wrap;gap:10px}
  .tag{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;font-size:13px;background:#F2F6F0;color:var(--brand-500);border:1px solid rgba(30,122,90,.14)}
  .rel-block{margin-top:34px}
  .rel-title{font-size:19px;font-weight:700;margin-bottom:16px}
  .rel-list{display:flex;flex-direction:column}
  .rel-item{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);transition:color .2s var(--ease)}
  .rel-item:first-child{border-top:1px solid var(--line)}
  .rel-item:hover{color:var(--brand-500)}
  .rel-item .num{flex:0 0 26px;font-size:13px;font-weight:700;color:var(--brand-500)}
  .rel-item .txt{font-size:15px;font-weight:600;line-height:1.5}
  .rel-item .kind{margin-left:auto;font-size:13px;color:var(--muted);white-space:nowrap}
  .back-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

  /* ---------- 底部 CTA ---------- */
  .cta-band{background:var(--brand-900);color:#fff;margin-top:96px;position:relative;overflow:hidden}
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0;position:relative;z-index:2}
  .cta-band h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;line-height:1.24;color:var(--accent)}
  .cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.78);max-width:620px}
  .cta-deco{position:absolute;top:0;bottom:0;width:1px;background:rgba(198,242,78,.28)}
  .cta-deco.left{left:8%}
  .cta-deco.right{right:8%}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);margin-top:0;padding:72px 0 28px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;margin-bottom:16px}
  .footer-brand .brand-mark{width:26px;height:26px;flex:0 0 26px}
  .footer-brand .mark-fill{fill:var(--accent)}
  .footer-brand .mark-line{stroke:#0B3A2E}
  .footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:340px}
  .footer-col h4{font-size:13px;letter-spacing:.08em;font-weight:700;color:#fff;margin-bottom:16px}
  .footer-col a{display:block;font-size:14px;padding:6px 0;color:rgba(255,255,255,.7);transition:color .2s var(--ease),transform .2s var(--ease)}
  .footer-col a:hover{color:var(--accent);transform:translateX(2px)}
  .footer-info{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66)}
  .footer-info strong{display:block;color:#fff;font-weight:600;margin-bottom:8px}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
    font-size:13px;color:rgba(255,255,255,.55);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1180px){
    .article-shell{gap:40px;grid-template-columns:minmax(0,1fr) 220px}
    .header-search input{width:190px}
    .main-nav{gap:20px}
  }
  @media (max-width:1024px){
    .article-shell{grid-template-columns:minmax(0,1fr)}
    .article-side{position:static}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
    .header-search{display:none}
    .main-nav{display:none}
    .nav-toggle{display:flex}
    .header-inner{gap:14px}
    .header-tools{margin-left:auto}
  }
  @media (max-width:768px){
    .container{padding:0 20px}
    .header-inner{height:60px}
    .brand{font-size:15px}
    .brand-mark{width:24px;height:24px;flex:0 0 24px}
    .article-head{padding:20px 0 26px}
    .article-shell{padding-top:40px}
    .breadcrumb .current{max-width:200px}
    .cta-inner{flex-direction:column;align-items:flex-start;padding:52px 0;gap:22px}
    .cta-inner .btn{width:100%}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:36px}
  }
  @media (max-width:520px){
    .article-title{font-size:1.6rem}
    .rel-item{align-items:flex-start}
    .rel-item .kind{margin-left:0;width:100%;padding-left:40px}
    .back-row .btn{width:100%}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
    .read-progress{transition:none}
  }

/* roulang page: category1 */
:root{
  --ink:#0F1512;
  --muted:#6B7269;
  --brand-900:#0B3A2E;
  --brand-700:#14563F;
  --brand-500:#1E7A5A;
  --accent:#C6F24E;
  --accent-ink:#0F1512;
  --accent-2:#E8A87C;
  --paper:#FAF8F3;
  --card:#FFFFFF;
  --line:#E4E0D8;
  --ring:rgba(30,122,90,.18);
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,21,18,.04),0 10px 28px -14px rgba(15,21,18,.10);
  --shadow-2:0 2px 4px rgba(15,21,18,.06),0 20px 44px -18px rgba(11,58,46,.22);
  --ease:cubic-bezier(.2,.8,.2,1);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;}
a:hover{color:var(--brand-700);}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

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

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,248,243,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 22px -14px rgba(11,58,46,.35);}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand-mark{width:32px;height:32px;flex:0 0 32px;}
.mark-fill{fill:var(--brand-900);}
.mark-line{fill:var(--accent);}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:16px;}
.nav-link{
  position:relative;padding:22px 0;font-size:15px;font-weight:500;color:var(--ink);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:14px;height:2px;width:0;
  background:var(--accent);transition:width .26s var(--ease);
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{width:100%;}
.nav-link.active{color:var(--brand-500);font-weight:600;}
.nav-link.active::after{width:100%;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:246px;height:40px;padding:0 12px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px var(--ring);}
.search-box svg{width:16px;height:16px;flex:0 0 16px;stroke:var(--muted);}
.search-box input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;}
.search-box input::placeholder{color:var(--muted);}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-accent{background:var(--accent);color:var(--accent-ink);}
.btn-accent:hover{background:#d4fb63;color:var(--accent-ink);transform:scale(1.02);}
.btn-accent:active{transform:scale(.99);}
.btn-brand{background:var(--brand-500);color:#fff;}
.btn-brand:hover{background:var(--brand-700);color:#fff;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);}
.btn-lg{height:48px;padding:0 26px;font-size:16px;}

.menu-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;
}
.menu-toggle span{display:block;width:16px;height:2px;background:var(--ink);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);
}
.menu-toggle span::before{top:-5px;}
.menu-toggle span::after{top:5px;}

.drawer{
  display:none;border-top:1px solid var(--line);background:var(--card);
  padding:16px 0 22px;
}
.drawer.open{display:block;}
.drawer .container{display:flex;flex-direction:column;gap:14px;}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--paper);}
.drawer-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:15px;}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line);}
.drawer-nav a{padding:13px 2px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);}
.drawer-nav a.active{color:var(--brand-500);border-left:3px solid var(--accent);padding-left:12px;}
.drawer-cta{width:100%;height:46px;}

/* ============ hero ============ */
.page-hero{position:relative;overflow:hidden;background:var(--paper);border-bottom:1px solid var(--line);padding:26px 0 72px;}
.page-hero::before{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,122,90,.07),rgba(30,122,90,0) 62%);
  pointer-events:none;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.04em;color:var(--muted);margin-bottom:30px;flex-wrap:wrap;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand-700);}
.crumbs .sep{color:var(--line);}
.crumbs .current{color:var(--ink);}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;margin-bottom:20px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;letter-spacing:.04em;
  background:rgba(198,242,78,.24);color:var(--brand-900);
}
.eyebrow i{width:6px;height:6px;background:var(--brand-500);transform:rotate(45deg);display:block;}
.page-hero h1{
  font-size:clamp(2.1rem,4.2vw,3.4rem);font-weight:800;letter-spacing:-.02em;line-height:1.1;
}
.hero-sub{margin-top:18px;font-size:19px;color:var(--muted);max-width:34em;}
.hero-lead{margin-top:16px;font-size:16px;color:var(--ink);max-width:36em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-note{margin-top:14px;font-size:13px;color:var(--muted);letter-spacing:.04em;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:20px;
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.media-tag{
  position:absolute;left:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:rgba(11,58,46,.88);color:#fff;font-size:13px;font-weight:600;
  border:1px solid var(--accent);
}

/* ============ sections ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:52em;}
.section-head h2{font-size:clamp(1.6rem,2.6vw,2.2rem);font-weight:700;}
.section-head h2::before{
  content:"";display:block;width:40px;height:3px;background:var(--accent);margin-bottom:18px;
}
.section-head p{margin-top:16px;color:var(--muted);font-size:16px;}

/* ============ alternating blocks ============ */
.blocks{padding:20px 0 96px;}
.block{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:52px 0;border-top:1px solid var(--line);
}
.block:first-child{border-top:0;}
.block-media{position:relative;}
.block-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:box-shadow .3s var(--ease),transform .3s var(--ease);
}
.block-media:hover img{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.block.flip .block-media{order:2;}
.block-body h2{font-size:clamp(1.4rem,2.2vw,1.85rem);}
.block-num{
  display:block;font-size:clamp(46px,6vw,78px);font-weight:800;line-height:1;
  letter-spacing:-.05em;margin-bottom:14px;color:var(--brand-500);
  -webkit-text-stroke:2px var(--brand-500);
}
@supports (-webkit-text-stroke:1px #000){
  .block-num{color:transparent;}
}
.block-key{margin-top:14px;font-size:16px;color:var(--ink);}
.block-body p.desc{margin-top:14px;color:var(--muted);font-size:15.5px;}
.tick-list{margin-top:18px;display:grid;gap:10px;}
.tick-list li{position:relative;padding-left:22px;font-size:15px;color:var(--ink);}
.tick-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;
  background:var(--accent);transform:rotate(45deg);
}
.mini-note{
  margin-top:20px;display:inline-flex;align-items:center;gap:10px;
  padding:10px 14px;border:1px dashed var(--line);border-radius:10px;
  font-size:13.5px;color:var(--muted);background:var(--card);
}

/* ============ metrics ============ */
.metrics-wrap{border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);}
.metric{padding:34px 28px;}
.metric + .metric{border-left:1px solid var(--line);}
.metric .val{font-size:clamp(2rem,3.4vw,2.8rem);font-weight:800;line-height:1;letter-spacing:-.02em;}
.metric .val em{font-style:normal;color:var(--brand-500);}
.metric .cap{margin-top:12px;font-size:14px;color:var(--muted);}

/* ============ more links ============ */
.more-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px;}
.link-card{
  display:flex;flex-direction:column;gap:12px;
  padding:26px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);color:var(--ink);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ring);color:var(--ink);}
.link-card .badge{
  align-self:flex-start;height:24px;display:inline-flex;align-items:center;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(30,122,90,.10);color:var(--brand-500);
}
.link-card h3{font-size:19px;font-weight:600;}
.link-card p{font-size:14px;color:var(--muted);}
.link-card .go{font-size:14px;font-weight:600;color:var(--brand-500);margin-top:auto;}

/* ============ cta band ============ */
.cta-band{background:var(--brand-900);color:#fff;padding:72px 0;position:relative;overflow:hidden;}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;top:0;bottom:0;width:1px;background:rgba(198,242,78,.28);
}
.cta-band::before{left:8%;}
.cta-band::after{right:8%;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;position:relative;}
.cta-inner h2{font-size:clamp(1.7rem,3vw,2.4rem);color:var(--accent);}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.78);font-size:16px;max-width:40em;}

/* ============ footer ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.82);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;margin-bottom:16px;}
.site-footer .brand-mark{width:28px;height:28px;flex:0 0 28px;}
.site-footer .mark-fill{fill:#fff;}
.site-footer .mark-line{fill:var(--brand-900);}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);max-width:34em;}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.55);font-weight:600;margin-bottom:16px;}
.footer-col a{display:block;font-size:14.5px;color:rgba(255,255,255,.86);padding:6px 0;transition:color .18s var(--ease),transform .18s var(--ease);}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-info{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);}
.footer-info strong{display:block;color:#fff;margin-bottom:10px;font-size:14.5px;}
.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,.55);
}

/* ============ reveal ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ============ responsive ============ */
@media (max-width:1080px){
  .search-box{width:200px;}
  .main-nav{gap:20px;}
  .hero-grid{gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-media{order:-1;}
  .block{grid-template-columns:1fr;gap:28px;}
  .block.flip .block-media{order:0;}
  .more-grid{grid-template-columns:1fr;gap:16px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:900px){
  .main-nav,.header-actions .search-box,.header-actions .btn-accent{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{height:60px;}
  .brand-text{font-size:16px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .page-hero{padding:18px 0 56px;}
  .page-hero::before{display:none;}
  .hero-sub{font-size:17px;}
  .metrics{grid-template-columns:1fr;}
  .metric{padding:24px 4px;}
  .metric + .metric{border-left:0;border-top:1px solid var(--line);}
  .block{padding:38px 0;}
  .cta-band{padding:56px 0;}
  .cta-band::before,.cta-band::after{display:none;}
  .btn-lg{width:100%;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .media-tag{left:12px;bottom:12px;font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1!important;transform:none!important;}
}

.reveal{opacity:1!important;transform:none!important;}

/* roulang page: category2 */
:root{
  --ink:#0F1512;
  --muted:#6B7269;
  --brand-900:#0B3A2E;
  --brand-700:#14563F;
  --brand-500:#1E7A5A;
  --accent:#C6F24E;
  --accent-ink:#0F1512;
  --accent-2:#E8A87C;
  --paper:#FAF8F3;
  --card:#FFFFFF;
  --line:#E4E0D8;
  --ring:rgba(30,122,90,.18);
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,21,18,.04), 0 10px 28px -14px rgba(15,21,18,.10);
  --shadow-2:0 2px 4px rgba(15,21,18,.06), 0 20px 44px -18px rgba(11,58,46,.22);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(15,21,18,.03);
  transition:box-shadow .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -12px rgba(11,58,46,.22)}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:30px;height:30px;flex-shrink:0}
.brand-mark .mark-fill{fill:var(--brand-500)}
.brand-mark .mark-line{fill:none;stroke:var(--accent);stroke-width:1.8}
.brand-text{
  font-size:18px;font-weight:800;letter-spacing:-.02em;white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink);
  padding:6px 0;white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .28s var(--ease);
}
.nav-link:hover{color:var(--brand-500)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-500);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{position:absolute;left:12px;width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:1.8}
.search-box input{
  width:230px;height:40px;
  padding:0 14px 0 34px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--card);color:var(--ink);font-size:14px;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:#9AA096}
.search-box input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--ring)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{transform:scale(1.02);box-shadow:0 10px 24px -14px rgba(11,58,46,.5)}
.btn-accent:active{transform:scale(.99)}
.btn-brand{background:var(--brand-500);color:#fff}
.btn-brand:hover{background:var(--brand-700)}
.btn-ghost{background:transparent;color:var(--brand-500);border-color:var(--brand-500)}
.btn-ghost:hover{background:rgba(30,122,90,.08)}
.btn-line{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-line:hover{border-color:var(--brand-500);color:var(--brand-500)}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);
  border-radius:var(--radius-btn);background:var(--card);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:16px;height:1.6px;background:var(--ink);position:relative;transition:background .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink);
  transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-5px) rotate(-45deg)}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--card);
  padding:18px 24px 24px;
}
.mobile-drawer.open{display:block}
.mobile-drawer .search-box{margin-bottom:14px}
.mobile-drawer .search-box input{width:100%}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.drawer-nav a{
  padding:11px 0;font-size:15px;font-weight:500;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand-500);font-weight:600}
.drawer-cta{width:100%}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  padding:52px 0 60px;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;
  border:1px solid rgba(30,122,90,.10);border-radius:50%;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;right:-40px;top:-40px;width:280px;height:280px;
  border:1px solid rgba(30,122,90,.08);border-radius:50%;pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;letter-spacing:.04em;color:var(--muted);margin-bottom:20px;
}
.breadcrumb a{transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--brand-500)}
.breadcrumb .sep{color:#C6C1B6}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;border-radius:999px;
  background:rgba(30,122,90,.10);color:var(--brand-500);
  font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:18px;
}
.page-hero h1{
  font-size:clamp(2.1rem,4.2vw,3.3rem);
  font-weight:800;line-height:1.1;letter-spacing:-.02em;
  margin-bottom:18px;
}
.page-hero h1 .hl{color:var(--brand-500)}
.hero-sub{font-size:18px;color:var(--muted);max-width:640px;margin-bottom:14px}
.hero-lead{font-size:15px;color:var(--muted);max-width:660px;margin-bottom:28px;line-height:1.9}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-note{margin-top:16px;font-size:13px;color:var(--muted);letter-spacing:.02em}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:20px;border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.hero-badge{
  position:absolute;left:-14px;bottom:22px;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--card);border:1px solid var(--accent);
  color:var(--ink);border-radius:999px;
  padding:8px 16px;font-size:13px;font-weight:600;
  box-shadow:var(--shadow-1);
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:56px}
.section-head .mark{display:block;width:40px;height:3px;background:var(--accent);margin-bottom:18px}
.section-head h2{font-size:clamp(1.75rem,3vw,2.35rem);font-weight:700;line-height:1.2;margin-bottom:14px}
.section-head p{font-size:15px;color:var(--muted);margin:0}
.divide{border-top:1px solid var(--line)}

/* ---------- timeline ---------- */
.timeline{position:relative;max-width:960px}
.timeline::before{
  content:"";position:absolute;left:31px;top:12px;bottom:12px;width:1px;
  background:var(--line);
}
.tl-item{position:relative;padding:0 0 52px 104px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:6px;width:64px;height:64px;
  display:flex;align-items:center;justify-content:center;
  background:var(--card);border:1px solid var(--line);border-radius:50%;
  font-size:20px;font-weight:800;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;color:var(--brand-500);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.tl-item:hover .tl-dot{border-color:var(--accent);box-shadow:0 10px 24px -16px rgba(11,58,46,.5);transform:translateY(-2px)}
.tl-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 28px;box-shadow:var(--shadow-1);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.tl-item:hover .tl-body{border-color:var(--ring);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.tl-body h3{font-size:20px;font-weight:600;margin-bottom:10px}
.tl-body p{font-size:15px;color:var(--muted);margin-bottom:14px}
.tl-meta{display:flex;gap:10px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;font-size:13px;font-weight:500;
  background:rgba(30,122,90,.10);color:var(--brand-500);
}
.chip.warm{background:rgba(232,168,124,.18);color:#8A5124}
.tick{list-style:none;display:grid;gap:8px;margin-top:4px}
.tick li{position:relative;padding-left:20px;font-size:14px;color:var(--ink);line-height:1.75}
.tick li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;
  border-radius:50%;background:var(--accent);
}

/* ---------- capability cards ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.cap-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.cap-card:hover{border-color:var(--ring);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.cap-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.cap-card p{font-size:14px;color:var(--muted);margin-bottom:16px}
.cap-1{grid-column:span 7}
.cap-2{grid-column:span 5}
.cap-3{grid-column:span 5}
.cap-4{grid-column:span 7}
.cap-figure{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:12px;border:1px solid var(--line);margin-bottom:18px;
}
.cap-card.split{display:grid;grid-template-columns:170px 1fr;gap:20px;align-items:start;padding:22px}
.cap-card.split .cap-figure{margin-bottom:0;height:100%;aspect-ratio:1/1}

/* ---------- stat strip ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:30px 24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{display:block;font-size:clamp(2rem,3.4vw,2.9rem);font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1.1}
.stat span{display:block;font-size:13px;color:var(--muted);margin-top:8px;letter-spacing:.04em}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);max-width:900px}
.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 2px;background:transparent;border:none;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-500)}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-500);transition:transform .26s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{padding:0 2px 24px;font-size:15px;line-height:1.9;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-900);color:#fff;position:relative;overflow:hidden;
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;width:1px;height:120%;top:-10%;background:rgba(198,242,78,.28);
}
.cta-band::before{left:8%}
.cta-band::after{right:8%}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:64px 0;
}
.cta-inner h2{font-size:clamp(1.7rem,3vw,2.4rem);font-weight:800;color:var(--accent);line-height:1.2;margin-bottom:10px}
.cta-inner p{color:rgba(255,255,255,.76);font-size:15px;margin:0;max-width:620px}

/* ---------- continue ---------- */
.next-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.next-card{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.next-card:hover{border-color:var(--ring);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.next-card span{display:block;font-size:13px;color:var(--brand-500);font-weight:600;letter-spacing:.04em;margin-bottom:10px}
.next-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.next-card p{font-size:14px;color:var(--muted);margin:0}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:28px;height:28px}
.footer-brand .mark-fill{fill:var(--accent)}
.footer-brand .mark-line{fill:none;stroke:var(--brand-900);stroke-width:1.8}
.footer-brand span{color:#fff;font-size:17px;font-weight:800;letter-spacing:-.02em}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);margin:0}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.6);margin-bottom:16px;font-weight:600}
.footer-col a{
  display:block;font-size:14px;color:rgba(255,255,255,.82);
  padding:5px 0;transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-info{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68)}
.footer-info strong{display:block;color:#fff;font-weight:600;margin-bottom:8px}
.footer-bottom{
  margin-top:44px;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,.55);letter-spacing:.02em;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-tools .search-box{display:none}
  .header-tools .btn-accent{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{max-width:620px}
  .cap-1,.cap-2,.cap-3,.cap-4{grid-column:span 12}
  .cap-card.split{grid-template-columns:150px 1fr}
  .next-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .header-inner{height:60px;gap:14px}
  .brand-text{font-size:16px}
  .page-hero{padding:36px 0 44px}
  .page-hero h1{font-size:clamp(2rem,8vw,2.6rem)}
  .hero-sub{font-size:16px}
  .section{padding:72px 0}
  .section.tight{padding:56px 0}
  .section-head{margin-bottom:40px}
  .timeline::before{left:19px}
  .tl-item{padding-left:64px;padding-bottom:40px}
  .tl-dot{width:40px;height:40px;font-size:15px}
  .tl-body{padding:22px 20px}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat{border-bottom:1px solid var(--line);padding:24px 18px}
  .stat:nth-child(2n){border-right:none}
  .stat:nth-child(n+3){border-bottom:none}
  .cap-card.split{grid-template-columns:1fr}
  .cap-card.split .cap-figure{aspect-ratio:16/10;height:auto}
  .next-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .cta-inner{padding:52px 0}
  .cta-inner .btn{width:100%}
  .hero-actions .btn{width:100%}
  .hero-badge{left:12px;bottom:12px}
}
@media (max-width:520px){
  .brand-text{font-size:15px}
  .page-hero h1{font-size:1.85rem}
  .stat b{font-size:1.9rem}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#0F1512;
  --muted:#6B7269;
  --brand-900:#0B3A2E;
  --brand-700:#14563F;
  --brand-500:#1E7A5A;
  --accent:#C6F24E;
  --accent-ink:#0F1512;
  --accent-2:#E8A87C;
  --paper:#FAF8F3;
  --card:#FFFFFF;
  --line:#E4E0D8;
  --ring:rgba(30,122,90,.18);
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,21,18,.04),0 10px 28px -14px rgba(15,21,18,.10);
  --shadow-2:0 2px 4px rgba(15,21,18,.06),0 20px 44px -18px rgba(11,58,46,.22);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;background:#FFFFFF;
  border-bottom:1px solid var(--line);transition:box-shadow .24s var(--ease);
}
.site-header.scrolled{box-shadow:0 8px 22px -18px rgba(15,21,18,.40)}
.header-inner{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:30px;height:30px;flex:none;transition:transform .3s var(--ease)}
.brand:hover .brand-mark{transform:rotate(-8deg)}
.mark-fill{fill:var(--brand-900)}
.mark-line{fill:none;stroke:var(--accent);stroke-width:1.6}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;font-size:15px;font-weight:500;padding:6px 0;color:var(--ink);white-space:nowrap;transition:color .2s var(--ease)}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-500);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;flex:none}
.search-box{
  display:flex;align-items:center;width:238px;height:40px;background:#fff;
  border:1px solid var(--line);border-radius:10px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px var(--ring)}
.search-box svg{width:16px;height:16px;margin-left:12px;flex:none;stroke:var(--muted);fill:none;stroke-width:1.8}
.search-box input{flex:1;height:100%;min-width:0;border:0;background:transparent;padding:0 12px 0 8px;font-size:14px;outline:none}
.search-box input::placeholder{color:#9AA096}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{filter:brightness(1.06);transform:scale(1.02);box-shadow:var(--shadow-1)}
.btn-accent:active{transform:scale(.99)}
.btn-brand{background:var(--brand-500);color:#fff}
.btn-brand:hover{background:var(--brand-700)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-500)}
.btn-sm{height:40px;padding:0 20px}
.nav-toggle{
  display:none;width:40px;height:40px;background:#fff;border:1px solid var(--line);
  border-radius:10px;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:17px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动端抽屉 */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(11,58,46,.42);opacity:0;pointer-events:none;
  transition:opacity .28s var(--ease);z-index:80;
}
.drawer-overlay.open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:310px;max-width:86vw;background:#fff;z-index:90;
  transform:translateX(102%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:20px 22px 26px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:34px;height:34px;border:1px solid var(--line);background:#fff;border-radius:9px;
  font-size:20px;line-height:1;cursor:pointer;color:var(--muted);
}
.drawer-search{margin:18px 0 6px}
.drawer-search input{
  width:100%;height:44px;border:1px solid var(--line);border-radius:10px;padding:0 14px;
  font-size:14px;outline:none;
}
.drawer-search input:focus{border-color:var(--brand-500);box-shadow:0 0 0 4px var(--ring)}
.drawer-nav{display:flex;flex-direction:column;margin:10px 0 20px}
.drawer-nav a{
  padding:13px 2px;font-size:15px;font-weight:500;border-bottom:1px solid var(--line);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--brand-500)}
.drawer-nav a.active{font-weight:700}
.drawer-cta{width:100%;margin-top:auto}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;background:var(--paper);border-bottom:1px solid var(--line);
  padding:44px 0 62px;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(30,122,90,.14) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);letter-spacing:.04em;margin-bottom:22px}
.breadcrumb a{color:var(--muted);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--brand-500)}
.breadcrumb .sep{color:#BFBAAE}
.breadcrumb .current{color:var(--ink);font-weight:600}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-title{
  font-size:clamp(2rem,3.6vw,3rem);font-weight:800;letter-spacing:-.02em;line-height:1.12;
  margin:0 0 16px;
}
.hero-sub{font-size:17px;color:var(--muted);max-width:620px}
.hero-lead{font-size:15px;color:var(--muted);margin-top:16px;max-width:640px;padding-top:16px;border-top:1px solid var(--line)}
.hero-media{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-1)}
.hero-media img{width:100%;height:290px;object-fit:cover}
.hero-media .tag-corner{
  position:absolute;left:16px;bottom:16px;background:#fff;border:1px solid var(--accent);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;color:var(--brand-700);
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.pill{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1;
}
.pill-brand{background:rgba(30,122,90,.10);color:var(--brand-500)}
.pill-warm{background:rgba(232,168,124,.16);color:#8C5330}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-line{border-top:1px solid var(--line)}
.sec-title{font-size:clamp(1.55rem,2.6vw,2.25rem);font-weight:700;line-height:1.2;letter-spacing:-.01em}
.sec-title::before{content:"";display:block;width:40px;height:3px;background:var(--accent);border-radius:2px;margin-bottom:18px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;flex-wrap:wrap;margin-bottom:40px}
.sec-desc{font-size:15px;color:var(--muted);max-width:560px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-500);
  transition:color .18s var(--ease),gap .18s var(--ease);
}
.text-link:hover{color:var(--brand-700);gap:10px}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side{position:sticky;top:100px}
.faq-side p{font-size:15px;color:var(--muted);margin-top:18px}
.faq-count{font-size:64px;font-weight:800;line-height:1;color:var(--brand-500);letter-spacing:-.03em}
.faq-count span{display:block;font-size:14px;font-weight:600;color:var(--muted);letter-spacing:.06em;margin-top:8px}
.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;
  background:none;border:0;padding:24px 0;text-align:left;font-size:17px;font-weight:600;
  line-height:1.5;cursor:pointer;transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-500)}
.faq-icon{position:relative;width:16px;height:16px;flex:none;transition:transform .26s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-500);border-radius:2px}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{top:0;left:7px;width:2px;height:16px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a-inner{padding:0 0 26px;font-size:15px;line-height:1.9;color:var(--muted);max-width:820px}

/* ---------- 细线清单 ---------- */
.linelist{border-top:1px solid var(--line)}
.linelist-item{
  display:grid;grid-template-columns:220px 1fr;gap:28px;align-items:baseline;
  padding:22px 0;border-bottom:1px solid var(--line);
  transition:padding-left .22s var(--ease),border-color .22s var(--ease);
}
.linelist-item:hover{padding-left:8px;border-color:var(--ring)}
.linelist-name{font-size:17px;font-weight:600}
.linelist-desc{font-size:15px;color:var(--muted)}

/* ---------- 入口卡片 ---------- */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ring)}
.entry-card img{width:100%;height:158px}
.entry-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.entry-body h3{font-size:19px;font-weight:600;line-height:1.4}
.entry-body p{font-size:14px;color:var(--muted);line-height:1.8}
.entry-body .text-link{margin-top:auto;padding-top:8px}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--brand-900);color:#fff;
  border-radius:20px;padding:56px 52px;display:flex;align-items:center;
  justify-content:space-between;gap:36px;
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;width:1px;height:140%;background:rgba(198,242,78,.22);
  top:-20%;
}
.cta-band::before{left:36px;transform:rotate(18deg)}
.cta-band::after{right:36px;transform:rotate(-18deg)}
.cta-copy{position:relative;z-index:1;max-width:640px}
.cta-copy h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;line-height:1.25;color:var(--accent);letter-spacing:-.01em}
.cta-copy p{font-size:15px;color:#C8D8CE;margin-top:12px}
.cta-band .btn{position:relative;z-index:1;flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#D7E2DA;padding:72px 0 28px;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{width:28px;height:28px}
.site-footer .mark-fill{fill:var(--brand-500)}
.site-footer .mark-line{stroke:var(--accent)}
.footer-about{font-size:14px;line-height:1.85;color:#A9BDB1;max-width:340px}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:16px}
.footer-col a{
  display:block;font-size:14px;color:#B9C8BF;padding:6px 0;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-info{font-size:14px;line-height:1.9;color:#A9BDB1}
.footer-info strong{display:block;color:#fff;font-weight:600;margin-bottom:8px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#93A99C;letter-spacing:.03em;
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .main-nav{gap:20px}
  .search-box{width:200px}
}
@media (max-width:1024px){
  .header-inner{gap:16px}
  .main-nav,.search-box{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media img{height:240px}
  .faq-wrap{grid-template-columns:1fr;gap:34px}
  .faq-side{position:static}
  .cards-3{grid-template-columns:1fr;gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .page-hero{padding:30px 0 44px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 28px;gap:24px}
  .cta-band .btn{width:100%}
  .linelist-item{grid-template-columns:1fr;gap:6px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-title{font-size:clamp(1.75rem,7vw,2.3rem)}
}
@media (max-width:520px){
  .brand-text{font-size:16px}
  .brand-mark{width:26px;height:26px}
  .header-inner{height:60px}
  .hero-media img{height:190px}
  .faq-q{font-size:16px;padding:20px 0}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .faq-a{transition:none !important}
}

/* roulang page: category3 */
:root{
  --ink:#0F1512;
  --muted:#6B7269;
  --brand-900:#0B3A2E;
  --brand-700:#14563F;
  --brand-500:#1E7A5A;
  --accent:#C6F24E;
  --accent-ink:#0F1512;
  --accent-2:#E8A87C;
  --paper:#FAF8F3;
  --card:#FFFFFF;
  --line:#E4E0D8;
  --ring:rgba(30,122,90,.18);
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,21,18,.04), 0 10px 28px -14px rgba(15,21,18,.10);
  --shadow-2:0 2px 4px rgba(15,21,18,.06), 0 20px 44px -18px rgba(11,58,46,.22);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{background:#D6FA6A;transform:scale(1.02)}
.btn-accent:active{transform:scale(.99)}
.btn-brand{background:var(--brand-500);color:#fff}
.btn-brand:hover{background:var(--brand-700)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-500)}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px}
.btn-block{width:100%}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.scrolled{box-shadow:0 2px 14px rgba(15,21,18,.07)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:30px;height:30px;flex:none}
.brand .mark-fill{fill:var(--brand-500)}
.brand .mark-line{fill:none;stroke:var(--accent);stroke-width:1.6}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px;margin:0 auto}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink);padding:6px 0;white-space:nowrap;transition:color .18s var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent);transition:width .24s var(--ease)}
.nav-link:hover{color:var(--brand-500)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--brand-500)}
.nav-link.active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.search-box{position:relative;width:240px}
.search-box svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:var(--muted);fill:none}
.search-box input{
  width:100%;height:40px;padding:0 14px 0 36px;border:1px solid var(--line);border-radius:10px;
  background:#fff;font-size:14px;color:var(--ink);outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-box input::placeholder{color:var(--muted)}
.search-box input:focus{border-color:var(--brand-500);box-shadow:0 0 0 4px var(--ring)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  padding:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(15,21,18,.42);opacity:0;pointer-events:none;transition:opacity .28s var(--ease);z-index:70}
.drawer-mask.open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);z-index:80;
  background:#fff;border-left:1px solid var(--line);padding:24px 22px 28px;
  display:flex;flex-direction:column;gap:18px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s var(--ease);
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line);font-weight:800;font-size:16px}
.drawer-search{position:relative}
.drawer-search input{width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:10px;font-size:14.5px;outline:none;background:#fff}
.drawer-search input:focus{border-color:var(--brand-500);box-shadow:0 0 0 4px var(--ring)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);font-size:15.5px;font-weight:500;color:var(--ink)}
.drawer-link.active{color:var(--brand-500)}
.drawer-link span{color:var(--line);font-size:14px}
.drawer-cta{margin-top:auto}

/* ---------- 分类 Hero ---------- */
.cat-hero{position:relative;background:var(--paper);border-bottom:1px solid var(--line);overflow:hidden}
.cat-hero::before{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:radial-gradient(circle at 18% 22%,var(--brand-500) 0 1px,transparent 1px),radial-gradient(circle at 78% 68%,var(--brand-500) 0 1px,transparent 1px);
  background-size:38px 38px,52px 52px;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:52px 0 60px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.04em;color:var(--muted);margin-bottom:22px}
.breadcrumb a{color:var(--muted);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--brand-500)}
.breadcrumb .sep{color:#C7C2B7}
.breadcrumb .now{color:var(--ink);font-weight:500}
.hero-h1{font-size:clamp(1.95rem,4.1vw,3rem);font-weight:800;letter-spacing:-.02em;line-height:1.1;margin:0}
.hero-h1 em{font-style:normal;color:var(--brand-500)}
.hero-sub{font-size:18px;color:var(--muted);margin:18px 0 0}
.hero-lead{font-size:15.5px;color:var(--muted);margin:14px 0 0;max-width:58ch}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;letter-spacing:.02em;background:rgba(30,122,90,.10);color:var(--brand-500);font-weight:600;
}
.chip-lime{background:rgba(198,242,78,.32);color:#3C5510}
.chip-clay{background:rgba(232,168,124,.20);color:#8A5326}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-note{font-size:13px;color:var(--muted);margin-top:14px;letter-spacing:.02em}
.hero-visual{position:relative}
.hero-frame{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-1);border:1px solid var(--line)}
.hero-frame img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-badge{
  position:absolute;left:18px;bottom:18px;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;background:rgba(11,58,46,.88);color:#E9F0EA;font-size:13px;letter-spacing:.03em;
  border:1px solid rgba(198,242,78,.5);
}
.hero-badge::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--accent);transform:rotate(45deg)}

/* ---------- 数据条 ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:28px 22px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{font-size:clamp(1.5rem,3vw,2rem);font-weight:800;letter-spacing:-.02em;line-height:1.15}
.stat-label{font-size:13px;color:var(--muted);letter-spacing:.04em;margin-top:6px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:52px}
.title-rule{width:40px;height:3px;background:var(--accent);margin-bottom:18px}
.eyebrow{font-size:13px;letter-spacing:.08em;color:var(--muted);margin-bottom:10px}
.sec-title{font-size:clamp(1.55rem,3vw,2.3rem);font-weight:700;line-height:1.2;letter-spacing:-.01em;margin:0}
.sec-sub{font-size:15.5px;color:var(--muted);margin:16px 0 0}

/* ---------- 双列对比主体 ---------- */
.compare-table{border-top:1px solid var(--line)}
.compare-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;padding:38px 0;border-bottom:1px solid var(--line)}
.compare-left{position:relative}
.row-index{display:inline-block;font-size:15px;font-weight:800;letter-spacing:.08em;color:var(--brand-500);margin-bottom:8px}
.compare-title{font-size:1.28rem;font-weight:700;line-height:1.35;margin:0 0 16px}
.point-list{list-style:none;margin:0;padding:0}
.point-list li{position:relative;padding-left:20px;margin-bottom:11px;font-size:15.5px;color:var(--ink)}
.point-list li::before{content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;border-radius:2px;background:var(--accent);transform:rotate(45deg)}
.param-panel{background:var(--brand-900);border-radius:12px;padding:22px 24px;box-shadow:var(--shadow-1)}
.panel-title{font-size:12.5px;letter-spacing:.1em;color:#93AC9E;margin:0 0 14px;font-family:var(--font)}
.param-line{display:flex;gap:16px;padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.10)}
.param-line:last-child{border-bottom:0}
.pv-key{flex:0 0 92px;font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.02em}
.pv-val{font-family:var(--mono);font-size:13px;color:#E4EDE6;letter-spacing:.01em}

/* ---------- 自检清单 + 侧栏卡 ---------- */
.checklist-grid{display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:start}
.check-list{border-top:1px solid var(--line)}
.check-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.check-num{flex:none;font-family:var(--mono);font-size:13px;color:var(--brand-500);letter-spacing:.06em;padding-top:3px}
.check-item h3{font-size:16.5px;font-weight:600;margin:0 0 4px}
.check-item p{margin:0;font-size:14.5px;color:var(--muted)}
.aside-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.aside-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.aside-body{padding:22px}
.aside-body h3{font-size:17px;font-weight:700;margin:0 0 10px}
.aside-body p{margin:0;font-size:14.5px;color:var(--muted)}
.aside-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}

/* ---------- 通道卡片 ---------- */
.channel-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px}
.channel-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ring)}
.channel-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.channel-body{padding:26px}
.channel-body h3{font-size:1.1rem;font-weight:700;margin:0 0 12px}
.channel-body p{margin:0 0 14px;font-size:14.8px;color:var(--muted)}
.mini-list{list-style:none;margin:0;padding:0}
.mini-list li{position:relative;padding-left:16px;font-size:14.5px;color:var(--ink);margin-bottom:8px}
.mini-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand-500)}

/* ---------- 继续了解 ---------- */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.link-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--ring)}
.link-card h3{font-size:17.5px;font-weight:700;margin:0 0 10px}
.link-card p{margin:0;font-size:14.5px;color:var(--muted)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--brand-500)}
.link-arrow::after{content:"→";transition:transform .24s var(--ease)}
.link-card:hover .link-arrow::after{transform:translateX(4px)}

/* ---------- CTA 横幅 ---------- */
.cta-band{background:var(--brand-900);padding:72px 0;position:relative;overflow:hidden}
.cta-band::before,.cta-band::after{content:"";position:absolute;top:0;bottom:0;width:1px;background:rgba(198,242,78,.22)}
.cta-band::before{left:8%}
.cta-band::after{right:8%}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-title{font-size:clamp(1.6rem,3.4vw,2.4rem);font-weight:800;color:var(--accent);letter-spacing:-.01em;line-height:1.2;margin:0}
.cta-text{margin:14px 0 0;color:#C9D8CF;font-size:15.5px;max-width:56ch}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#C9D8CF;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;padding:72px 0 48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.site-footer .mark-fill{fill:var(--accent)}
.site-footer .mark-line{fill:none;stroke:var(--brand-900);stroke-width:1.6}
.footer-brand span{color:#fff;font-size:17px;font-weight:800;letter-spacing:-.01em}
.footer-about{margin:0;font-size:14.5px;line-height:1.9;color:#A9BDB2;max-width:34ch}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:#8FA79A;font-weight:600;margin:0 0 18px}
.footer-col a{display:block;font-size:14.5px;color:#D6E2DA;margin-bottom:12px;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-info{font-size:14.5px;line-height:1.9;color:#A9BDB2}
.footer-info strong{display:block;color:#fff;margin-bottom:10px;font-size:15px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;font-size:13px;color:#8FA79A;letter-spacing:.03em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 断点 ---------- */
@media (max-width:1023px){
  .search-box{display:none}
  .hero-grid{grid-template-columns:1fr;gap:34px;padding:40px 0 48px}
  .checklist-grid{grid-template-columns:1fr;gap:32px}
  .channel-grid{grid-template-columns:1fr;gap:24px}
  .compare-row{gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-inner{justify-content:space-between}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .header-inner{height:60px}
  .brand-text{font-size:15.5px}
  .section{padding:64px 0}
  .compare-row{grid-template-columns:1fr;gap:20px;padding:30px 0}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:1px solid var(--line)}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0}
  .link-cards{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-actions .btn{width:100%}
  .cta-band{padding:60px 0}
  .cta-inner .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .hero-h1{font-size:1.85rem}
  .hero-sub{font-size:16.5px}
  .sec-title{font-size:1.5rem}
  .pv-key{flex:0 0 72px;font-size:12px}
  .pv-val{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}