/* roulang page: index */
:root{
  --ink:#0E1116;--ink-soft:#1B2027;--paper:#F6F4EF;--surface:#FFFFFF;
  --line:#E5E1D8;--accent:#F2542D;--accent-ink:#C93E1A;--secondary:#16544A;
  --muted:#6B7079;--ok:#1F7A5A;--warn:#B4761A;--err:#B4322A;
  --r-s:8px;--r-m:14px;--r-l:22px;
  --sh-1:0 1px 2px rgba(14,17,22,.05);--sh-2:0 16px 40px -20px rgba(14,17,22,.22);
  --ease:cubic-bezier(.2,.7,.3,1);--t:200ms;
}
*,*::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:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.85;letter-spacing:0;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.mono{font-family:ui-monospace,"Barlow Condensed","SFMono-Regular",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
.section{padding:104px 0}
.section-sm{padding:72px 0}
.eyebrow{display:inline-block;font-family:"Songti SC","Noto Serif SC",serif;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;flex-wrap:wrap}
.section-head h2{font-size:clamp(28px,3.2vw,42px);font-weight:800;line-height:1.18;letter-spacing:-.01em}
.section-head p{margin-top:12px;color:var(--muted);max-width:620px}
.lead{font-size:17px;color:var(--muted)}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;background:rgba(22,84,74,.1);color:var(--secondary);white-space:nowrap}
.badge-accent{background:rgba(242,84,45,.12);color:var(--accent-ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;font-weight:600;font-size:15px;transition:background var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--accent-ink);transform:translateX(2px)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateX(2px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--accent-ink)}
.link-arrow svg{transition:transform var(--t) var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:28px;transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.35)}
.card:hover h3{color:var(--accent-ink)}
.card h3{font-size:18px;font-weight:700;transition:color var(--t) var(--ease)}
.card p{color:var(--muted);font-size:15px;margin-top:10px}
.media-zoom{overflow:hidden;border-radius:var(--r-m)}
.media-zoom img{transition:transform 420ms var(--ease)}
.card:hover .media-zoom img,.media-zoom:hover img{transform:scale(1.04)}
.reveal{opacity:0;transform:translateY(18px);transition:opacity 620ms var(--ease),transform 620ms var(--ease)}
.reveal.in{opacity:1;transform:none}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(246,244,239,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow var(--t) var(--ease)}
.header-inner{display:flex;align-items:center;gap:26px;height:88px;transition:height var(--t) var(--ease)}
.site-header.is-compact .header-inner{height:64px;box-shadow:none}
.site-header.is-compact{box-shadow:var(--sh-1)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.01em;flex-shrink:0}
.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;background:var(--ink);color:var(--accent)}
.brand-name em{font-style:normal;font-weight:500;color:var(--muted);font-size:13px;margin-left:6px;letter-spacing:.04em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;font-size:15px;font-weight:500;color:var(--ink);transition:color var(--t) var(--ease)}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--t) var(--ease)}
.nav-link:hover{color:var(--accent-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--accent-ink)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.menu-btn{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;background:var(--surface)}
.menu-btn span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}
.nav-mask{position:fixed;inset:0;background:rgba(14,17,22,.45);opacity:0;visibility:hidden;transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease);z-index:90}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:var(--surface);z-index:100;transform:translateX(105%);transition:transform 280ms var(--ease);display:flex;flex-direction:column;padding:20px 24px 32px;overflow-y:auto}
.nav-drawer.is-open{transform:none}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;font-size:20px;line-height:1}
.drawer-nav a{display:flex;align-items:center;height:52px;border-top:1px solid var(--line);font-size:16px;font-weight:500}
.drawer-nav a:last-child{border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--accent-ink)}
.drawer-foot{margin-top:24px;display:grid;gap:14px}
.drawer-foot p{font-size:13px;color:var(--muted)}

/* hero */
.hero{position:relative;overflow:hidden;padding:80px 0 92px;background:linear-gradient(180deg,#FBFAF7 0%,var(--paper) 100%)}
.hero::before{content:"";position:absolute;top:-120px;right:-160px;width:520px;height:520px;background-image:repeating-linear-gradient(45deg,rgba(14,17,22,.05) 0 1px,transparent 1px 12px);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(38px,5.6vw,66px);font-weight:900;line-height:1.08;letter-spacing:-.02em}
.hero h1 span{color:var(--accent-ink)}
.hero-sub{margin-top:20px;font-size:17px;color:var(--muted);max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.hero-stats .num{font-size:26px;font-weight:700;letter-spacing:-.01em}
.hero-stats .num small{font-size:13px;font-weight:500;color:var(--muted);margin-left:4px}
.hero-stats .lbl{font-size:13px;color:var(--muted);margin-top:4px;letter-spacing:.04em}
.hero-visual{position:relative}
.hero-frame{border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:var(--surface);box-shadow:var(--sh-1)}
.hero-frame img{width:100%;height:430px;object-fit:cover}
.countdown{position:relative;margin-top:-46px;margin-left:20px;margin-right:20px;background:var(--ink);color:#fff;border-radius:var(--r-m);padding:18px 20px;box-shadow:var(--sh-2)}
.countdown .cd-label{font-size:12px;letter-spacing:.16em;color:rgba(255,255,255,.6)}
.cd-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}
.cd-grid .cd-num{font-size:26px;font-weight:700;color:#fff}
.cd-grid .cd-unit{font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.55);margin-top:2px}

/* trust */
.trust{padding:34px 0 8px;border-bottom:1px solid var(--line)}
.trust-title{font-size:13px;letter-spacing:.16em;color:var(--muted);text-align:center;margin-bottom:22px}
.trust-list{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;text-align:center}
.trust-list span{font-size:14px;font-weight:600;color:var(--ink);opacity:.55;transition:opacity var(--t) var(--ease);padding-bottom:30px}
.trust-list span:hover{opacity:.95}

/* bento */
.bento-top{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.bento-side{display:grid;gap:24px}
.bento-bottom{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.bento-main{display:flex;flex-direction:column;padding:0;overflow:hidden}
.bento-main .bento-media{height:280px}
.bento-main .bento-media img{width:100%;height:100%;object-fit:cover}
.bento-main .bento-body{padding:28px 30px 30px}
.bento-main h3{font-size:24px;font-weight:800}
.bento-main p{margin-top:12px;color:var(--muted);font-size:15px}
.icon-box{width:46px;height:46px;border-radius:13px;background:rgba(22,84,74,.08);display:grid;place-items:center;color:var(--secondary);margin-bottom:18px}
.bento-bottom .card{padding:26px}
.bento-bottom h3{font-size:17px}
.bento-bottom p{font-size:14px}

/* stage table */
.stage-table{margin-top:8px;border-top:1px solid var(--ink)}
.stage-row{display:grid;grid-template-columns:180px 1fr 1.4fr 130px;gap:20px;align-items:center;padding:22px 4px;border-bottom:1px solid var(--line);transition:background var(--t) var(--ease)}
.stage-row:hover{background:rgba(255,255,255,.75)}
.stage-row .st-idx{font-size:24px;font-weight:700;color:var(--accent)}
.stage-row .st-name{font-weight:700;font-size:16px}
.stage-row .st-time{font-size:14px;color:var(--muted)}
.stage-row .st-pill{justify-self:start}
.pill{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;border:1px solid var(--line);background:var(--surface);color:var(--muted)}
.pill-ok{background:rgba(31,122,90,.1);color:var(--ok);border-color:transparent}
.pill-warn{background:rgba(180,118,26,.12);color:var(--warn);border-color:transparent}
.pill-live{background:rgba(242,84,45,.12);color:var(--accent-ink);border-color:transparent}

/* scenes */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:56px 0;border-bottom:1px solid var(--line)}
.scene:last-child{border-bottom:none}
.scene.reverse .scene-media{order:2}
.scene-media{border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:var(--surface)}
.scene-media img{width:100%;height:340px;object-fit:cover}
.scene-idx{font-size:15px;font-weight:700;color:var(--accent);letter-spacing:.14em}
.scene h3{font-size:clamp(22px,2.4vw,30px);font-weight:800;margin-top:14px}
.scene p{margin-top:14px;color:var(--muted)}
.scene-points{margin-top:22px;display:grid;gap:10px}
.scene-points li{position:relative;padding-left:20px;font-size:15px}
.scene-points li::before{content:"—";position:absolute;left:0;color:var(--accent)}

/* dark cases */
.dark{background:var(--ink);color:#fff}
.dark .eyebrow{color:var(--accent)}
.dark h2{color:#fff}
.dark .lead{color:rgba(255,255,255,.62)}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:12px}
.case-card{background:var(--ink-soft);border:1px solid rgba(255,255,255,.09);border-radius:var(--r-l);padding:28px;transition:transform var(--t) var(--ease),border-color var(--t) var(--ease)}
.case-card:hover{transform:translateY(-4px);border-color:rgba(242,84,45,.5)}
.case-num{font-size:40px;font-weight:800;letter-spacing:-.02em;margin-top:16px;color:#fff}
.case-desc{font-size:14px;color:rgba(255,255,255,.6);margin-top:6px}
.case-quote{margin-top:22px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:15px;line-height:1.8;color:rgba(255,255,255,.86);font-family:"Songti SC","Noto Serif SC",serif}
.case-owner{margin-top:12px;font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.06em}
.case-sums{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px;padding-top:32px;border-top:1px solid rgba(255,255,255,.12)}
.case-sums .num{font-size:30px;font-weight:800}
.case-sums .lbl{font-size:13px;color:rgba(255,255,255,.55);margin-top:4px}
.case-note{margin-top:26px;font-size:13px;color:rgba(255,255,255,.45)}

/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:32px;transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease)}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.price-card.featured{background:var(--ink);color:#fff;border-color:var(--ink);position:relative}
.price-card.featured .price-amount,.price-card.featured .price-name{color:#fff}
.price-card.featured .price-desc,.price-card.featured li{color:rgba(255,255,255,.72)}
.price-card.featured li svg{color:var(--accent)}
.badge-rec{position:absolute;top:24px;right:24px;background:var(--accent);color:#fff}
.price-name{font-size:18px;font-weight:800}
.price-desc{font-size:14px;color:var(--muted);margin-top:8px}
.price-amount{margin-top:22px;font-size:38px;font-weight:800;letter-spacing:-.02em}
.price-amount small{font-size:14px;font-weight:500;color:var(--muted);margin-left:6px;letter-spacing:0}
.price-list{margin:26px 0 30px;display:grid;gap:12px}
.price-list li{display:flex;gap:10px;font-size:15px;color:var(--muted);align-items:flex-start}
.price-list svg{flex-shrink:0;margin-top:6px;color:var(--secondary)}
.price-card .btn{margin-top:auto}

/* news */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px}
.news-feature{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;display:flex;flex-direction:column;transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease)}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.35)}
.news-feature-media{display:block;overflow:hidden}
.news-feature-media img{width:100%;height:280px;object-fit:cover;transition:transform 420ms var(--ease)}
.news-feature:hover .news-feature-media img{transform:scale(1.04)}
.news-feature-body{padding:26px 28px 30px}
.news-feature-body h3{font-size:22px;font-weight:800;line-height:1.4;margin-top:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feature-body p{margin-top:12px;color:var(--muted);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.news-list{display:flex;flex-direction:column;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:8px 24px}
.news-row{display:grid;grid-template-columns:1fr 118px;gap:18px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:background var(--t) var(--ease)}
.news-row:last-child{border-bottom:none}
.news-row:hover{background:rgba(246,244,239,.7)}
.news-row h3{font-size:16px;font-weight:700;line-height:1.5;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--t) var(--ease)}
.news-row:hover h3{color:var(--accent-ink)}
.news-row p{margin-top:8px;font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row time{display:inline-block;margin-top:10px;font-size:12px;color:var(--muted);letter-spacing:.04em}
.news-row-thumb{border-radius:var(--r-m);overflow:hidden;border:1px solid var(--line);display:block}
.news-row-thumb img{width:100%;height:84px;object-fit:cover}
.news-list-empty{padding:26px 0;font-size:14px;color:var(--muted)}
.empty-state{background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-l);padding:64px 24px;text-align:center}
.empty-state p{color:var(--muted);margin-bottom:20px}

/* faq */
.faq-wrap{display:grid;grid-template-columns:1fr 1.35fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:120px}
.faq-aside h2{font-size:clamp(28px,3.2vw,40px);font-weight:800;line-height:1.2}
.faq-aside p{margin-top:16px;color:var(--muted)}
.faq-contact{margin-top:26px;padding:22px;border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface)}
.faq-contact .t{font-weight:700;font-size:15px}
.faq-contact .v{font-size:22px;font-weight:800;margin-top:6px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;padding:22px 0;font-size:17px;font-weight:600;transition:color var(--t) var(--ease)}
.faq-q:hover{color:var(--accent-ink)}
.faq-sign{flex-shrink:0;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);display:grid;place-items:center;font-size:16px;line-height:1;transition:transform var(--t) var(--ease),background var(--t) var(--ease),color var(--t) var(--ease)}
.faq-item.is-open .faq-sign{transform:rotate(45deg);background:var(--accent);color:#fff;border-color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms var(--ease)}
.faq-a p{padding:0 40px 24px 0;color:var(--muted);font-size:15px}

/* cta */
.cta-band{background:var(--ink);border-radius:var(--r-l);padding:48px 52px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-60px;bottom:-80px;width:280px;height:280px;background-image:repeating-linear-gradient(45deg,rgba(242,84,45,.16) 0 1px,transparent 1px 12px)}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,34px);font-weight:800;line-height:1.25}
.cta-band p{color:rgba(255,255,255,.62);margin-top:10px;font-size:15px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative}

/* footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.6);padding:72px 0 28px;margin-top:104px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--accent);color:#fff}
.site-footer p{font-size:14px;line-height:1.9}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;padding:6px 0;transition:color var(--t) var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.45)}

@media (max-width:1023px){
  .main-nav{display:none}
  .menu-btn{display:flex}
  .header-inner{height:72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-frame img{height:320px}
  .trust-list{grid-template-columns:repeat(3,1fr)}
  .bento-top{grid-template-columns:1fr}
  .bento-bottom{grid-template-columns:repeat(3,1fr)}
  .stage-row{grid-template-columns:130px 1fr 1fr;gap:14px}
  .stage-row .st-pill{grid-column:1/-1}
  .scene{grid-template-columns:1fr;gap:28px;padding:44px 0}
  .scene.reverse .scene-media{order:0}
  .case-grid{grid-template-columns:1fr}
  .case-sums{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:72px 0}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .brand-name em{display:none}
  .hero{padding:48px 0 64px}
  .hero-stats{grid-template-columns:1fr;gap:16px}
  .hero-frame img{height:240px}
  .countdown{margin:-32px 12px 0}
  .cd-grid .cd-num{font-size:22px}
  .section{padding:56px 0}
  .section-head{margin-bottom:30px}
  .trust-list{grid-template-columns:repeat(2,1fr)}
  .bento-bottom{grid-template-columns:1fr}
  .stage-row{grid-template-columns:1fr;gap:8px;padding:20px 0}
  .scene-media img{height:230px}
  .case-sums{grid-template-columns:1fr}
  .news-list{padding:8px 18px}
  .news-row{grid-template-columns:1fr;gap:12px}
  .news-row-thumb img{height:150px}
  .cta-band{padding:34px 26px;border-radius:var(--r-m)}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:64px;padding-top:56px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#0E1116; --ink-soft:#1B2027; --paper:#F6F4EF; --surface:#FFFFFF;
  --line:#E5E1D8; --accent:#F2542D; --accent-ink:#C93E1A; --secondary:#16544A;
  --muted:#6B7079; --ok:#1F7A5A; --warn:#B4761A; --err:#B4322A;
  --r-s:8px; --r-m:14px; --r-l:22px;
  --sh-1:0 1px 2px rgba(14,17,22,.05);
  --sh-2:0 16px 40px -20px rgba(14,17,22,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:"Barlow Condensed", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:0;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 18px}
ul,ol{margin:0 0 18px;padding-left:22px}
: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}
@media(min-width:1440px){.container{max-width:1280px}}
.eyebrow{font-family:"Noto Serif SC",Georgia,serif;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--secondary);font-weight:600;margin-bottom:14px}
.meta-mono{font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--muted)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:height .2s var(--ease),box-shadow .2s var(--ease)}
.header-inner{display:flex;align-items:center;gap:28px;height:88px;transition:height .2s var(--ease)}
.site-header.is-shrink{box-shadow:var(--sh-1)}
.site-header.is-shrink .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:19px;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;background:var(--ink);color:var(--accent);flex:0 0 auto}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.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;bottom:0;height:2px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--accent)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-cta{margin-left:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-ink);transform:translateX(2px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--accent);font-size:15px}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.hamburger{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);border-radius:12px;align-items:center;justify-content:center;cursor:pointer;margin-left:auto}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(14,17,22,.5);opacity:0;visibility:hidden;transition:opacity .24s var(--ease);z-index:80}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:var(--surface);z-index:90;transform:translateX(102%);transition:transform .28s var(--ease);display:flex;flex-direction:column;padding:18px 20px 28px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);cursor:pointer}
.drawer nav{display:flex;flex-direction:column;margin:10px 0 18px}
.drawer nav a{display:flex;align-items:center;height:52px;border-top:1px solid var(--line);font-size:16px;font-weight:500}
.drawer nav a:last-child{border-bottom:1px solid var(--line)}
.drawer nav a.is-active{color:var(--accent)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.drawer-foot .meta-mono{line-height:1.7}

/* ---------- banner ---------- */
.page-banner{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.page-banner .banner-bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.webp);background-size:cover;background-position:center;opacity:.28}
.page-banner::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 16px)}
.banner-inner{position:relative;z-index:2;padding:38px 0 44px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.65);margin-bottom:18px}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:#fff;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.banner-title{font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.02em;max-width:900px;line-height:1.2}
.banner-sub{margin-top:14px;color:rgba(255,255,255,.72);font-size:15px;max-width:720px}

/* ---------- article layout ---------- */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.article-wrap{display:grid;grid-template-columns:1fr;gap:40px;align-items:start}
@media(min-width:1280px){.article-wrap{grid-template-columns:minmax(0,1fr) 240px}}
.article-shell{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:32px 26px;box-shadow:var(--sh-1)}
@media(min-width:768px){.article-shell{padding:52px 56px}}
.article-head{max-width:780px}
.article-head h1{font-size:clamp(28px,3.6vw,44px);line-height:1.22;letter-spacing:-.02em}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:center;margin-top:18px}
.chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;background:rgba(22,84,74,.1);color:var(--secondary);font-weight:600}
.accent-rule{width:56px;height:3px;background:var(--accent);border-radius:2px;margin:22px 0 0}
.article-body{max-width:780px;margin-top:34px;font-size:16px;line-height:1.9;color:#20242B}
.article-body h2{font-size:clamp(22px,2.4vw,30px);margin:48px 0 16px;padding-left:14px;border-left:3px solid var(--accent);line-height:1.3}
.article-body h3{font-size:22px;margin:32px 0 12px;line-height:1.35}
.article-body h4{font-size:17px;margin:24px 0 10px;font-weight:600}
.article-body p{margin:0 0 18px}
.article-body ul,.article-body ol{padding-left:0;list-style:none;margin:0 0 20px}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:0;top:.78em;width:12px;height:2px;background:var(--accent);border-radius:2px}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item}
.article-body ol li::before{content:counter(item,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--mono);font-size:13px;color:var(--secondary);font-weight:600;letter-spacing:.06em}
.article-body blockquote{margin:28px 0;padding:20px 24px;background:var(--paper);border-left:3px solid var(--ink);border-radius:0 var(--r-m) var(--r-m) 0;font-family:"Noto Serif SC",Georgia,serif;color:#31363E}
.article-body img{border-radius:var(--r-m);margin:24px 0;border:1px solid var(--line)}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent-ink)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto}
.article-body th,.article-body td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.article-body th{font-weight:600;background:var(--paper)}
.article-body pre{background:var(--ink);color:#E8E9EB;border-radius:var(--r-s);padding:18px 20px;overflow-x:auto;font-family:var(--mono);font-size:14px;line-height:1.7}
.article-body code{font-family:var(--mono);font-size:.95em;background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:1px 6px}
.article-body pre code{background:none;border:0;padding:0;color:inherit}

/* ---------- toc ---------- */
.toc{display:none}
@media(min-width:1280px){
  .toc{display:block;position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:20px}
}
.toc h3{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:12px}
.toc a{display:block;font-size:14px;line-height:1.6;color:#3A3F47;padding:7px 0 7px 12px;border-left:2px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.toc a:hover{color:var(--accent)}
.toc a.is-current{color:var(--accent);border-left-color:var(--accent);font-weight:600}

/* ---------- empty / tags / related ---------- */
.empty-state{text-align:center;padding:64px 20px;border:1px dashed var(--line);border-radius:var(--r-m);background:var(--paper)}
.empty-state h3{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:20px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:#3A3F47;transition:border-color .2s var(--ease),color .2s var(--ease)}
.tag:hover{border-color:rgba(242,84,45,.4);color:var(--accent)}
.back-row{margin-top:28px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.related-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.2)}
.card:hover .card-title{color:var(--accent)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:600;line-height:1.45;transition:color .2s var(--ease);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{color:var(--muted);font-size:14.5px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:#fff;border-radius:var(--r-l);padding:44px 32px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);max-width:620px}
.cta-band p{color:rgba(255,255,255,.68);margin:12px 0 0;max-width:620px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.6);margin-top:80px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);color:var(--accent)}
.site-footer p{font-size:14.5px;line-height:1.8;max-width:420px}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px;font-weight:700}
.footer-col a{display:block;font-size:14.5px;padding:7px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:13px}
@media(max-width:1023px){
  .main-nav,.header-cta{display:none}
  .hamburger{display:inline-flex}
  .header-inner{height:60px}
  .site-header.is-shrink .header-inner{height:60px}
}
@media(max-width:639px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .article-shell{padding:26px 20px}
  .cta-band{padding:32px 22px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1!important;transform:none!important}
}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* roulang page: category1 */
:root{
  --ink:#0E1116;
  --ink-soft:#1B2027;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E1D8;
  --accent:#F2542D;
  --accent-ink:#C93E1A;
  --secondary:#16544A;
  --muted:#6B7079;
  --ok:#1F7A5A;
  --warn:#B4761A;
  --err:#B4322A;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-1:0 1px 2px rgba(14,17,22,.05);
  --sh-2:0 16px 40px -20px rgba(14,17,22,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:'Barlow Condensed',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  letter-spacing:0;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
: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}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  height:88px;
  transition:height .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{height:64px;box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:100%}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-text{font-weight:900;font-size:18px;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--accent)}
.main-nav{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink);
  padding:8px 2px;
  transition:color .2s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .25s var(--ease);
}
.nav-link::before{
  content:"";position:absolute;top:-2px;left:50%;transform:translateX(-50%);
  width:16px;height:2px;background:var(--accent);opacity:0;
  transition:opacity .2s var(--ease);
}
.nav-link:hover{color:var(--accent-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--accent);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{opacity:1}
.header-cta{display:flex;align-items:center;gap:12px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),opacity .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-ink);transform:translateX(2px)}
.btn-primary:active{transform:translateX(1px) scale(.99)}
.btn-ghost{border:1px solid var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--paper)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-lg{height:54px;padding:0 32px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--accent);
}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;border:1px solid var(--line)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,17,22,.42);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
  z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;
  background:var(--surface);z-index:100;
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;
  box-shadow:-18px 0 48px -28px rgba(14,17,22,.4);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;line-height:1;color:var(--muted);border:1px solid var(--line)}
.drawer-close:hover{color:var(--ink);border-color:var(--ink)}
.drawer-links{display:flex;flex-direction:column;padding:8px 20px 0}
.drawer-links a{
  height:52px;display:flex;align-items:center;
  border-bottom:1px solid var(--line);
  font-size:16px;font-weight:500;
}
.drawer-links a.is-active{color:var(--accent);font-weight:700}
.drawer-foot{margin-top:auto;padding:24px 20px 32px;display:flex;flex-direction:column;gap:12px}
.drawer-foot .meta{font-size:13px;color:var(--muted);line-height:1.9}

/* ---------- breadcrumb ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--muted);letter-spacing:.04em}
.crumb a:hover{color:var(--accent)}
.crumb span.sep{margin:0 8px;color:var(--line)}
.crumb .current{color:var(--ink);font-weight:500}

/* ---------- hero ---------- */
.sub-hero{padding:28px 0 64px}
.sub-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:"Noto Serif SC",Georgia,serif;
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--secondary);font-weight:600;
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--secondary)}
h1{
  font-size:clamp(32px,4.4vw,54px);
  font-weight:900;
  line-height:1.12;
  letter-spacing:-.02em;
}
.hero-lead{margin-top:20px;font-size:17px;color:#3A4048;max-width:34em}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero-media{
  border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);
  background:var(--paper);box-shadow:var(--sh-1);
  aspect-ratio:16/10;max-height:340px;
}
.hero-media img{width:100%;height:100%;object-fit:cover}

/* ---------- metrics ---------- */
.metrics-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface)}
.metrics{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:30px 24px;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric-num{font-family:var(--mono);font-size:38px;font-weight:700;line-height:1;color:var(--ink);letter-spacing:.01em}
.metric-num small{font-size:16px;font-weight:600;color:var(--muted);margin-left:4px}
.metric-txt{margin-top:10px;font-size:13.5px;color:var(--muted);line-height:1.7}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:44px}
h2{font-size:clamp(26px,3.1vw,40px);font-weight:900;line-height:1.2;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:#4B5158}
.h3{font-size:22px;font-weight:700;line-height:1.35}

/* ---------- capability layout ---------- */
.cap-layout{display:grid;grid-template-columns:250px 1fr;gap:56px;align-items:start}
.cap-aside{position:sticky;top:104px}
.aside-title{font-family:var(--mono);font-size:13px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;margin-bottom:14px}
.aside-nav{display:flex;flex-direction:column;border-left:1px solid var(--line)}
.aside-link{
  position:relative;display:block;
  padding:12px 0 12px 18px;
  font-size:14.5px;color:var(--muted);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.aside-link::before{
  content:"";position:absolute;left:-1px;top:0;bottom:0;width:2px;
  background:transparent;transition:background-color .2s var(--ease);
}
.aside-link:hover{color:var(--ink);background:rgba(242,84,45,.05)}
.aside-link.is-active{color:var(--accent);font-weight:700}
.aside-link.is-active::before{background:var(--accent)}
.aside-cta{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.aside-note{font-size:13px;color:var(--muted);line-height:1.8}

.cap-list{border-top:1px solid var(--line)}
.cap-block{
  display:grid;grid-template-columns:96px 1fr;gap:28px;
  padding:38px 0;
  border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease);
  scroll-margin-top:110px;
}
.cap-block:hover{background:rgba(255,255,255,.6)}
.cap-num{
  font-family:var(--mono);font-size:42px;font-weight:700;line-height:1;
  color:var(--line);
  transition:color .25s var(--ease);
  padding-top:4px;
}
.cap-block:hover .cap-num{color:var(--accent)}
.cap-block h3{font-size:22px;font-weight:700;line-height:1.35}
.cap-block p{margin-top:12px;color:#4B5158}
.dash-list{margin-top:18px;display:grid;gap:10px}
.dash-list li{position:relative;padding-left:22px;font-size:15px;color:#3A4048}
.dash-list li::before{content:"";position:absolute;left:0;top:13px;width:12px;height:2px;background:var(--accent)}
.tag-row{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;font-weight:500;
  background:rgba(22,84,74,.1);color:var(--secondary);
}
.tag-accent{background:rgba(242,84,45,.12);color:var(--accent-ink)}
.tag-line{border:1px solid var(--line);color:var(--muted);background:transparent}

/* ---------- flow ---------- */
.flow{background:var(--ink);color:#fff}
.flow h2{color:#fff}
.flow .section-head p{color:rgba(255,255,255,.66)}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-item{
  background:var(--ink-soft);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-m);
  padding:28px 24px;
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.flow-item:hover{transform:translateY(-4px);border-color:rgba(242,84,45,.4)}
.flow-item .num{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--accent);line-height:1}
.flow-item h3{margin-top:16px;font-size:18px;font-weight:700}
.flow-item p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.68);line-height:1.8}

/* ---------- audience ---------- */
.audience-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.audience-media{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.audience-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .35s var(--ease)}
.audience-media:hover img{transform:scale(1.04)}
.aud-list{margin-top:26px;display:grid;gap:16px}
.aud-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:20px 22px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.aud-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.35)}
.aud-item h4{font-size:17px;font-weight:600}
.aud-item p{margin-top:8px;font-size:14.5px;color:#4B5158;line-height:1.8}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside p{margin-top:16px;color:#4B5158}
.faq-aside .btn{margin-top:26px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;
  font-size:17px;font-weight:600;line-height:1.6;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.faq-q:hover{color:var(--accent);background:rgba(255,255,255,.6)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .25s var(--ease)}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-item.is-open .faq-q{color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding:0 4px 24px;color:#4B5158;font-size:15px;max-width:62ch}

/* ---------- cta ---------- */
.cta-band{padding:0 0 96px}
.cta-box{
  background:var(--ink);color:#fff;border-radius:var(--r-l);
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-box::after{
  content:"";position:absolute;right:-40px;bottom:-70px;
  width:260px;height:260px;border-radius:50%;
  border:1px solid rgba(242,84,45,.35);
}
.cta-box h2{color:#fff;font-size:clamp(24px,2.6vw,34px)}
.cta-box p{margin-top:12px;color:rgba(255,255,255,.68);max-width:46ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.6);padding:72px 0 28px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:900;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{width:30px;height:30px;border-radius:9px;background:rgba(255,255,255,.1);color:var(--accent)}
.site-footer p{line-height:1.9}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col a{display:block;padding:7px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(18px)}
.js .reveal.is-in{opacity:1;transform:none;transition:opacity .55s var(--ease),transform .55s var(--ease)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .main-nav{gap:18px}
  .nav-link{font-size:14.5px}
}
@media (max-width:1023px){
  .main-nav,.header-cta .btn{display:none}
  .menu-toggle{display:flex}
  .site-header{height:64px}
  .sub-hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{max-height:none;order:2}
  .cap-layout{grid-template-columns:1fr;gap:32px}
  .cap-aside{position:static}
  .aside-nav{flex-direction:row;flex-wrap:wrap;border-left:0;border-top:1px solid var(--line);gap:6px;padding-top:10px}
  .aside-link{padding:8px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--line)}
  .aside-link::before{display:none}
  .aside-link.is-active{border-color:var(--accent);background:rgba(242,84,45,.08)}
  .aside-cta{flex-direction:row;flex-wrap:wrap}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .audience-grid{grid-template-columns:1fr;gap:32px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .section{padding:60px 0}
  .section-tight{padding:52px 0}
  .sub-hero{padding:22px 0 48px}
  .cap-block{grid-template-columns:1fr;gap:14px;padding:30px 0}
  .cap-num{font-size:32px}
  .flow-grid{grid-template-columns:1fr}
  .cta-box{padding:36px 24px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding-bottom:60px}
  .hero-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --ink:#0E1116;
  --ink-soft:#1B2027;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E1D8;
  --accent:#F2542D;
  --accent-ink:#C93E1A;
  --secondary:#16544A;
  --muted:#6B7079;
  --ok:#1F7A5A;
  --warn:#B4761A;
  --err:#B4322A;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-1:0 1px 2px rgba(14,17,22,.05);
  --sh-2:0 16px 40px -20px rgba(14,17,22,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"Barlow Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-serif:"Noto Serif SC",Georgia,serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
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}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
body.no-scroll{overflow:hidden}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--accent-ink);transform:translateX(2px)}
.btn-primary:active{transform:translateX(1px) scale(.99)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-ghost.on-dark{border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost.on-dark:hover{background:#fff;color:var(--ink)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--accent);
  border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .2s var(--ease);
}
.btn-link svg{transition:transform .2s var(--ease)}
.btn-link:hover{border-bottom-color:var(--accent)}
.btn-link:hover svg{transform:translateX(4px)}

/* ---------- 标签 / 徽章 ---------- */
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:14px;color:var(--ink);
  white-space:nowrap;transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;background:rgba(22,84,74,.1);color:var(--secondary);
}
.badge-accent{background:rgba(242,84,45,.1);color:var(--accent-ink)}
.eyebrow{
  display:inline-block;font-family:var(--font-serif);font-size:12px;letter-spacing:.18em;
  color:var(--accent);font-weight:600;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:28px;height:88px;transition:height .25s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em;flex-shrink:0}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--ink);color:#fff;
  display:grid;place-items:center;flex-shrink:0;
}
.main-nav{display:flex;align-items:center;gap:26px;margin:0 auto}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);padding:6px 0;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 .2s var(--ease);
}
.nav-link:hover{color:var(--accent)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--accent)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);
  border-radius:var(--r-s);cursor:pointer;align-items:center;justify-content:center;color:var(--ink);
}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent)}

/* 移动抽屉 */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(14,17,22,.5);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:120;height:100%;width:84vw;max-width:360px;
  background:var(--surface);padding:24px;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .28s var(--ease);overflow-y:auto;
  box-shadow:-16px 0 40px -24px rgba(14,17,22,.4);
}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-head .brand{font-size:16px}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);background:var(--surface);border-radius:var(--r-s);
  cursor:pointer;display:grid;place-items:center;color:var(--ink);
}
.drawer-close:hover{border-color:var(--accent);color:var(--accent)}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;border-bottom:1px solid var(--line);
  font-size:16px;font-weight:500;color:var(--ink-soft);
}
.drawer-nav a.is-active{color:var(--accent)}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}
.drawer-foot .meta{font-size:13px;color:var(--muted);letter-spacing:.04em}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(115deg,rgba(14,17,22,.92) 0%,rgba(14,17,22,.7) 52%,rgba(22,84,74,.66) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 16px);
  opacity:.6;
}
.page-hero .container{position:relative;z-index:2}
.page-hero-inner{max-width:760px;padding:84px 0 80px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.66);margin-bottom:22px}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{color:rgba(255,255,255,.38)}
.breadcrumb .current{color:#fff}
.page-hero h1{
  font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.16;letter-spacing:-.02em;margin:14px 0 18px;
}
.page-hero .hero-lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.82);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.hero-tags span{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.24);
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section.tight{padding:64px 0}
.section.alt{background:var(--surface)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:clamp(26px,3.2vw,38px);font-weight:800;line-height:1.2;margin:12px 0 16px}
.section-head p{color:var(--muted);font-size:16px}

/* 场景锚点条 */
.scene-anchor{background:var(--surface);border-bottom:1px solid var(--line);padding:18px 0}
.scene-anchor .scroll{display:flex;gap:12px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
.scene-anchor .scroll::-webkit-scrollbar{height:4px}
.scene-anchor .scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}

/* 交替图文 */
.scene-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:56px 0;border-top:1px solid var(--line);
}
.scene-row:first-of-type{border-top:0;padding-top:0}
.scene-media{position:relative}
.scene-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-l);
  border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.scene-media:hover img{transform:translateY(-4px);box-shadow:var(--sh-2)}
.scene-index{
  position:absolute;left:20px;top:18px;font-family:var(--font-mono);font-size:30px;line-height:1;
  color:#fff;text-shadow:0 2px 12px rgba(14,17,22,.55);letter-spacing:.04em;
}
.scene-row.is-reverse .scene-media{order:2}
.scene-body h3{font-size:22px;font-weight:700;line-height:1.35;margin:14px 0 16px}
.scene-body p{color:#454C55;font-size:16px;margin-bottom:14px}
.scene-body p:last-of-type{margin-bottom:0}
.data-point{
  margin-top:22px;padding:16px 20px;background:var(--paper);border-left:3px solid var(--accent);
  border-radius:0 var(--r-s) var(--r-s) 0;
}
.data-point strong{display:block;font-family:var(--font-mono);font-size:19px;letter-spacing:.02em;color:var(--ink);line-height:1.4}
.data-point span{font-size:13.5px;color:var(--muted);letter-spacing:.02em}
.tick-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.tick-list li{position:relative;padding-left:20px;font-size:15px;color:#454C55;line-height:1.7}
.tick-list li::before{content:"—";position:absolute;left:0;color:var(--accent);font-weight:700}

/* 深色口径板块 */
.band-dark{background:var(--ink);color:#fff;padding:80px 0}
.band-dark .section-head h2{color:#fff}
.band-dark .section-head p{color:rgba(255,255,255,.62)}
.band-dark .eyebrow{color:var(--accent)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric-card{
  background:var(--ink-soft);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-m);
  padding:26px 24px;transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.metric-card:hover{border-color:rgba(242,84,45,.5);transform:translateY(-4px)}
.metric-card .m-label{font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:rgba(255,255,255,.5);text-transform:uppercase}
.metric-card .m-value{margin:12px 0 10px;font-size:20px;font-weight:700;line-height:1.35;color:#fff}
.metric-card p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.6)}
.band-note{margin-top:26px;font-size:13px;color:rgba(255,255,255,.45);letter-spacing:.04em}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.step{border-top:2px solid var(--line);padding-top:22px;transition:border-color .2s var(--ease)}
.step:hover{border-top-color:var(--accent)}
.step-num{font-family:var(--font-mono);font-size:22px;color:var(--accent);letter-spacing:.06em}
.step h3{font-size:18px;font-weight:700;margin:10px 0 10px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* 能力清单 */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cap-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:28px 24px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.35)}
.cap-card h3{font-size:17px;font-weight:700;margin:14px 0 10px}
.cap-card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.cap-icon{
  width:44px;height:44px;border-radius:12px;background:rgba(22,84,74,.1);color:var(--secondary);
  display:grid;place-items:center;
}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:340px 1fr;gap:64px;align-items:start}
.faq-aside{position:sticky;top:112px}
.faq-aside h2{font-size:clamp(24px,2.6vw,32px);font-weight:800;line-height:1.25;margin:12px 0 16px}
.faq-aside p{color:var(--muted);font-size:15px}
.faq-contact{
  margin-top:24px;padding:20px;background:var(--paper);border-radius:var(--r-m);border:1px solid var(--line);
}
.faq-contact .k{font-size:13px;letter-spacing:.06em;color:var(--muted)}
.faq-contact .v{font-family:var(--font-mono);font-size:17px;color:var(--ink);margin-top:4px}
.faq-list{border-bottom:1px solid var(--line)}
.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;padding:22px 0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:17px;font-weight:600;color:var(--ink);transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--accent);font-size:16px;line-height:1;
  transition:transform .25s var(--ease),background-color .25s var(--ease),color .25s var(--ease);
}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(180deg);background:var(--accent);color:#fff;border-color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 0 22px;font-size:15px;color:var(--muted);max-width:640px}

/* CTA */
.cta-wrap{padding:0 0 96px}
.cta-banner{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;border-radius:var(--r-l);
  padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-banner::after{
  content:"";position:absolute;right:-40px;top:-40px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,84,45,.35) 0%,rgba(242,84,45,0) 70%);
}
.cta-banner h2{font-size:clamp(24px,2.8vw,34px);font-weight:800;line-height:1.25;position:relative;z-index:2}
.cta-banner p{margin-top:12px;color:rgba(255,255,255,.68);font-size:15px;max-width:520px;position:relative;z-index:2}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* Footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.6);padding:76px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--accent);color:#fff}
.site-footer p{font-size:14px;line-height:1.9}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.04em}
.footer-col a{display:block;font-size:14px;padding:6px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;letter-spacing:.04em;
}

/* 入场动效 */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease);transition-delay:var(--d,0ms)}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .header-inner{height:64px;gap:16px}
  .brand{font-size:16px}
  .section{padding:64px 0}
  .scene-row{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .scene-row.is-reverse .scene-media{order:0}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cap-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:40px 28px}
  .page-hero-inner{padding:64px 0 60px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .page-hero h1{font-size:28px}
  .page-hero .hero-lead{font-size:15.5px}
  .section{padding:56px 0}
  .metric-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-actions .btn{flex:1 1 100%}
  .cta-wrap{padding-bottom:56px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .js .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --ink:#0E1116;
  --ink-soft:#1B2027;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E1D8;
  --accent:#F2542D;
  --accent-ink:#C93E1A;
  --secondary:#16544A;
  --muted:#6B7079;
  --ok:#1F7A5A;
  --warn:#B4761A;
  --err:#B4322A;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-1:0 1px 2px rgba(14,17,22,.05);
  --sh-2:0 16px 40px -20px rgba(14,17,22,.22);
  --ease:200ms cubic-bezier(.2,.7,.3,1);
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::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:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(242,84,45,.22)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section--dark{background:var(--ink);color:#fff}
.section--dark .section-sub,.section--dark .eyebrow{color:rgba(255,255,255,.66)}

.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--secondary);
  margin-bottom:14px;
}
.section-head{max-width:760px;margin-bottom:48px}
.section-title{font-size:clamp(28px,3.2vw,42px);font-weight:800;line-height:1.18;letter-spacing:-.01em}
.section-sub{margin-top:16px;color:var(--muted);font-size:16px;line-height:1.85}
.section--dark .section-sub{color:rgba(255,255,255,.66)}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:88px;
  transition:height var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;display:grid;place-items:center;flex:0 0 auto}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--ink);
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--accent-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--accent-ink);font-weight:700}
.nav-link.is-active::before{
  content:"";position:absolute;top:0;left:12px;right:12px;height:2px;background:var(--accent);
}
.header-cta{margin-left:8px}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:var(--surface);align-items:center;justify-content:center;cursor:pointer;
  transition:border-color var(--ease),background var(--ease);
}
.menu-toggle:hover{border-color:var(--accent);background:#fff}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* Drawer */
.drawer{
  position:fixed;top:0;right:0;z-index:90;
  width:84vw;max-width:360px;height:100%;
  background:var(--surface);
  padding:70px 22px 32px;
  transform:translateX(101%);
  transition:transform 240ms cubic-bezier(.2,.7,.3,1);
  overflow-y:auto;
  box-shadow:var(--sh-2);
}
.drawer.is-open{transform:translateX(0)}
.drawer-close{
  position:absolute;top:14px;right:14px;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;font-size:20px;line-height:1;color:var(--ink);cursor:pointer;
}
.drawer-close:hover{border-color:var(--accent);color:var(--accent-ink)}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 4px;font-size:16px;
  border-bottom:1px solid var(--line);
  transition:color var(--ease),padding-left var(--ease);
}
.drawer-nav a:hover{color:var(--accent-ink);padding-left:8px}
.drawer-nav a.is-active{color:var(--accent-ink);font-weight:700}
.drawer-nav a::after{content:"→";font-size:14px;color:var(--muted)}
.drawer-foot{margin-top:24px;display:flex;flex-direction:column;gap:10px}
.drawer-foot .muted{font-size:13px;color:var(--muted);line-height:1.7}
.overlay{
  position:fixed;inset:0;z-index:80;background:rgba(14,17,22,.45);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.overlay.is-open{opacity:1;visibility:visible}
body.is-locked{overflow:hidden}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--accent-ink);transform:translateX(2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateX(0) scale(.99)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateX(2px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#fff;color:var(--accent-ink);transform:translateX(2px)}
.btn-outline-light{border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{background:#fff;color:var(--ink);transform:translateX(2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--ink);font-size:15px}
.link-arrow span{transition:transform var(--ease)}
.link-arrow:hover{color:var(--accent-ink)}
.link-arrow:hover span{transform:translateX(4px)}

/* ============ Hero ============ */
.page-hero{position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:84px 0 72px}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.3;
}
.page-hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,17,22,.92),rgba(14,17,22,.62))}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:26px}
.crumb a{color:rgba(255,255,255,.62);transition:color var(--ease)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.5}
.crumb .current{color:#fff}
.page-hero .eyebrow{color:rgba(255,255,255,.72)}
.page-hero h1{
  font-size:clamp(34px,4.4vw,54px);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  max-width:16em;
}
.page-hero .lead{margin-top:20px;max-width:640px;font-size:17px;color:rgba(255,255,255,.76)}
.page-hero .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;margin-top:48px;padding-top:28px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-metric .num{font-family:var(--font-mono);font-size:26px;font-weight:700;letter-spacing:-.01em;color:#fff}
.hero-metric .lbl{margin-top:4px;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.6)}

/* ============ Cards / badges ============ */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.35)}
.card h3{font-size:18px;font-weight:700;line-height:1.35}
.card p{margin-top:10px;color:var(--muted);font-size:15px}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;font-weight:600;
  background:rgba(22,84,74,.1);color:var(--secondary);
}
.badge-accent{background:rgba(242,84,45,.12);color:var(--accent-ink)}

/* ============ Matrix ============ */
.matrix-wrap{margin-top:8px}
.matrix{
  border:1px solid var(--line);border-radius:var(--r-l);
  background:var(--surface);overflow:hidden;box-shadow:var(--sh-1);
}
.matrix-row{display:grid;grid-template-columns:220px repeat(3,minmax(0,1fr))}
.matrix-row + .matrix-row{border-top:1px solid var(--line)}
.matrix-cell{padding:18px 20px;font-size:15px;color:var(--ink-soft);display:flex;flex-direction:column;gap:6px}
.matrix-cell:first-child{font-weight:700;color:var(--ink);background:var(--paper)}
.matrix-cell + .matrix-cell{border-left:1px solid var(--line)}
.matrix-head .matrix-cell{padding-top:24px;padding-bottom:24px;background:#fff;color:var(--ink)}
.matrix-head .matrix-cell:first-child{align-items:flex-start;justify-content:center;font-size:13px;letter-spacing:.06em;color:var(--muted);font-weight:600}
.tier{font-size:18px;font-weight:800;letter-spacing:-.01em}
.tier-sub{font-size:13px;color:var(--muted);letter-spacing:.04em}
.matrix-cell.is-reco{background:rgba(242,84,45,.09)}
.matrix-head .matrix-cell.is-reco{background:rgba(242,84,45,.14)}
.matrix .hint{margin-top:16px;font-size:13px;color:var(--muted)}
.matrix-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ============ Steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:8px}
.step{position:relative;padding-top:26px;border-top:2px solid var(--line)}
.step:hover{border-top-color:var(--accent)}
.step .idx{font-family:var(--font-mono);font-size:14px;letter-spacing:.08em;color:var(--accent-ink);font-weight:700}
.step h3{margin-top:10px;font-size:18px;font-weight:700}
.step p{margin-top:10px;font-size:15px;color:var(--muted)}

/* ============ Modules list ============ */
.modules{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;border-top:1px solid var(--line)}
.module{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--line)}
.module .no{font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--secondary);flex:0 0 auto;padding-top:3px}
.module h3{font-size:17px;font-weight:700}
.module p{margin-top:8px;font-size:15px;color:var(--muted)}

/* ============ Stats ============ */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:8px}
.stat{background:var(--ink-soft);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-m);padding:24px}
.stat .num{font-family:var(--font-mono);font-size:28px;font-weight:700;color:#fff;letter-spacing:-.01em}
.stat .lbl{margin-top:8px;font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.62)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:56px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside .section-head{margin-bottom:24px}
.faq-contact{margin-top:8px;padding:24px;border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface)}
.faq-contact p{font-size:15px;color:var(--muted);margin-bottom:16px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);transition:color var(--ease);
}
.faq-q:hover{color:var(--accent-ink)}
.faq-q .sign{
  flex:0 0 auto;width:28px;height:28px;border-radius:999px;border:1px solid var(--line);
  display:grid;place-items:center;font-family:var(--font-mono);font-size:15px;color:var(--ink);
  transition:transform var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.faq-item.is-open .faq-q{color:var(--accent-ink)}
.faq-item.is-open .sign{transform:rotate(45deg);background:var(--accent);border-color:var(--accent);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 4px 22px;font-size:15px;color:var(--muted);max-width:62ch}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink);color:#fff;border-radius:var(--r-l);
  padding:48px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
}
.cta-band h2{font-size:clamp(26px,2.8vw,36px);font-weight:800;line-height:1.2;max-width:22em}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.68);font-size:15px;max-width:44ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;position:relative;z-index:2}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.6);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:1.8}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:14px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.6);transition:color var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;
}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(18px);transition:opacity 520ms cubic-bezier(.2,.7,.3,1),transform 520ms cubic-bezier(.2,.7,.3,1)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ Responsive ============ */
@media (max-width:1023px){
  .main-nav{display:none}
  .header-cta{display:none}
  .menu-toggle{display:inline-flex;margin-left:auto}
  .header-inner{height:64px}
  .site-header.is-scrolled .header-inner{height:60px}
  .section{padding:72px 0}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .page-hero{padding:56px 0 48px}
  .page-hero .lead{font-size:16px}
  .hero-metrics{grid-template-columns:1fr;gap:14px;margin-top:32px;padding-top:22px}
  .hero-metric{display:flex;align-items:baseline;gap:12px}
  .hero-metric .lbl{margin-top:0}
  .modules{grid-template-columns:1fr;border-top:1px solid var(--line)}
  .matrix{border:0;border-radius:0;background:transparent;box-shadow:none}
  .matrix-head{display:none}
  .matrix-row{
    grid-template-columns:1fr;border:1px solid var(--line);border-radius:var(--r-m);
    background:var(--surface);margin-bottom:16px;overflow:hidden;box-shadow:var(--sh-1);
  }
  .matrix-row + .matrix-row{border-top:1px solid var(--line)}
  .matrix-cell{padding:14px 16px;border-top:1px dashed var(--line)}
  .matrix-cell + .matrix-cell{border-left:0}
  .matrix-cell:first-child{background:var(--paper);border-top:0;font-size:15px}
  .matrix-cell[data-tier]::before{
    content:attr(data-tier);
    font-size:12px;letter-spacing:.06em;color:var(--muted);font-weight:600;
  }
  .cta-band{padding:32px 22px;border-radius:var(--r-m)}
  .btn{width:100%}
  .hero-actions .btn,.cta-actions .btn,.matrix-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:519px){
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding-top:20px;padding-bottom:22px;border-top-width:1px}
  .stat-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --ink:#0E1116;
  --ink-soft:#1B2027;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E1D8;
  --accent:#F2542D;
  --accent-ink:#C93E1A;
  --secondary:#16544A;
  --muted:#6B7079;
  --ok:#1F7A5A;
  --warn:#B4761A;
  --err:#B4322A;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-1:0 1px 2px rgba(14,17,22,.05);
  --sh-2:0 16px 40px -20px rgba(14,17,22,.22);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --font-sans:"Noto Sans SC","PingFang SC","Source Han Sans SC",system-ui,sans-serif;
  --font-serif:"Noto Serif SC",Georgia,serif;
  --font-num:"Barlow Condensed",ui-monospace,SFMono-Regular,Menlo,monospace;
  --header-h:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
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}
::selection{background:rgba(242,84,45,.2)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:var(--header-h);
  transition:height var(--t);
}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);color:var(--accent);
  flex-shrink:0;
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--accent)}
.main-nav{display:flex;align-items:center;gap:30px}
.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;bottom:0;height:2px;width:0;background:var(--accent);
  transition:width var(--t);
}
.nav-link:hover::after{width:100%}
.nav-link:hover{color:var(--accent-ink)}
.nav-link.is-active{color:var(--accent-ink)}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:-14px;width:100%;height:2px;background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform var(--t),background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-ink);transform:translateX(2px)}
.btn-primary:active{transform:translateX(2px) scale(.99)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--paper)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn:disabled,.btn.is-disabled{opacity:.45;pointer-events:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:600;color:var(--ink);font-size:15px;
}
.link-arrow svg{transition:transform var(--t)}
.link-arrow:hover{color:var(--accent-ink)}
.link-arrow:hover svg{transform:translateX(4px)}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;border:1px solid var(--line);
}
.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}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,17,22,.45);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:98;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;
  background:var(--surface);z-index:99;
  transform:translateX(105%);transition:transform 240ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:18px 20px 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:var(--paper)}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;
  border-bottom:1px solid var(--line);font-size:16px;font-weight:500;
}
.drawer-nav a:hover{color:var(--accent-ink)}
.drawer-nav a.is-active{color:var(--accent-ink);font-weight:700}
.drawer-cta{margin-top:20px;width:100%}
.drawer-foot{margin-top:auto;padding-top:24px;font-size:13px;color:var(--muted);line-height:1.9}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);letter-spacing:.04em;
  padding:22px 0 0;
}
.breadcrumb a:hover{color:var(--accent-ink)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ---------- Hero ---------- */
.page-hero{padding:26px 0 0}
.hero-panel{
  position:relative;overflow:hidden;
  background:var(--ink);color:#fff;
  border-radius:var(--r-l);
  padding:48px 44px 44px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
  min-height:380px;
}
.hero-panel::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:16px 16px;opacity:.28;pointer-events:none;
}
.hero-copy{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-serif);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--accent);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent)}
.page-hero h1{
  font-size:clamp(30px,4vw,48px);font-weight:800;line-height:1.14;letter-spacing:-.02em;
  margin-bottom:16px;
}
.page-hero h1 em{font-style:normal;color:var(--accent)}
.hero-lead{font-size:16px;color:rgba(255,255,255,.78);max-width:52ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-media{position:relative;z-index:2}
.hero-media img{
  width:100%;border-radius:var(--r-m);border:1px solid rgba(255,255,255,.14);
  object-fit:cover;aspect-ratio:16/10;
}
.hero-media figcaption{
  margin-top:12px;font-size:13px;color:rgba(255,255,255,.55);letter-spacing:.04em;
}

/* ---------- Section base ---------- */
.section{padding:96px 0}
.section.tint{background:var(--surface)}
.section.dark{background:var(--ink);color:#fff}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{font-size:clamp(26px,3.1vw,40px);font-weight:800;line-height:1.2;letter-spacing:-.015em}
.section-desc{margin-top:14px;color:var(--muted);font-size:16px}
.section.dark .section-desc{color:rgba(255,255,255,.68)}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- Metrics ---------- */
.metrics-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface);
  overflow:hidden;
}
.metric{padding:28px 26px;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric-value{
  font-family:var(--font-num);font-size:clamp(28px,3vw,38px);font-weight:600;
  line-height:1.05;color:var(--accent);letter-spacing:.01em;
}
.metric-value small{font-size:15px;color:var(--muted);margin-left:4px;letter-spacing:.06em}
.metric-label{margin-top:8px;font-size:14px;font-weight:600}
.metric-note{margin-top:4px;font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- Source cards ---------- */
.source-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.source-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:28px 26px;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.source-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.35)}
.source-icon{
  width:44px;height:44px;border-radius:12px;background:rgba(22,84,74,.08);
  color:var(--secondary);display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.source-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.source-card p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- Case wall (masonry, 2 columns) ---------- */
.case-wall{display:flex;gap:24px;align-items:flex-start}
.case-col{flex:1 1 0;display:flex;flex-direction:column;gap:24px;min-width:0}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.35)}
.case-card:hover .case-cover img{transform:scale(1.04)}
.case-card:hover .case-title{color:var(--accent-ink)}
.case-cover{overflow:hidden;background:var(--paper);border-bottom:1px solid var(--line)}
.case-cover img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.case-card.is-tall .case-cover img{aspect-ratio:4/3}
.case-card.is-wide .case-cover img{aspect-ratio:16/7}
.case-body{padding:26px 26px 28px}
.case-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;font-weight:600;
  background:rgba(22,84,74,.1);color:var(--secondary);
}
.tag.accent{background:rgba(242,84,45,.12);color:var(--accent-ink)}
.case-title{font-size:19px;font-weight:700;line-height:1.4;margin-bottom:10px;transition:color var(--t)}
.case-text{font-size:14.5px;color:var(--muted);line-height:1.85}
.metric-chip{
  display:flex;align-items:flex-start;gap:14px;margin:18px 0 16px;
  padding:16px 18px;border-radius:12px;background:var(--paper);border:1px dashed var(--line);
}
.metric-chip .num{
  font-family:var(--font-num);font-size:24px;font-weight:600;color:var(--ink);line-height:1.1;
  min-width:72px;
}
.metric-chip .txt{font-size:13px;color:var(--muted);line-height:1.7}
.metric-chip .txt b{display:block;font-size:14px;color:var(--ink);font-weight:600;letter-spacing:.02em}

/* ---------- Process ---------- */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:30px 24px;position:relative;overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.process-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.35)}
.process-num{
  font-family:var(--font-num);font-size:52px;font-weight:700;line-height:1;
  color:rgba(14,17,22,.08);position:absolute;right:16px;top:12px;letter-spacing:0;
}
.process-item h3{font-size:18px;font-weight:700;margin-bottom:10px;position:relative}
.process-item p{font-size:14.5px;color:var(--muted);line-height:1.8;position:relative}
.process-item .step-time{
  display:inline-block;margin-top:14px;font-size:12px;letter-spacing:.06em;
  color:var(--secondary);background:rgba(22,84,74,.08);border-radius:999px;padding:4px 10px;
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:56px;align-items:start}
.faq-aside{position:sticky;top:110px}
.faq-aside .section-desc{margin-bottom:24px}
.contact-box{
  border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface);
  padding:22px 24px;
}
.contact-box p{font-size:14px;color:var(--muted);line-height:1.9}
.contact-box strong{display:block;color:var(--ink);font-size:15px;margin-bottom:6px}
.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:18px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
  transition:color var(--t);
}
.faq-q:hover{color:var(--accent-ink)}
.faq-sign{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
  transition:transform var(--t),background-color var(--t),color var(--t),border-color var(--t);
}
.faq-item.is-open .faq-sign{background:var(--accent);color:#fff;border-color:var(--accent);transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 0 22px;font-size:15px;color:var(--muted);line-height:1.9;max-width:64ch}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 96px}
.cta-banner{
  background:var(--ink);color:#fff;border-radius:var(--r-l);
  padding:44px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-banner::after{
  content:"CASE DATA";position:absolute;right:24px;bottom:-14px;
  font-family:var(--font-num);font-size:88px;font-weight:700;letter-spacing:.04em;
  color:rgba(255,255,255,.05);pointer-events:none;
}
.cta-banner h2{font-size:clamp(24px,2.6vw,34px);font-weight:800;line-height:1.25;margin-bottom:10px}
.cta-banner p{color:rgba(255,255,255,.7);font-size:15px;max-width:52ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.6);padding:72px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);color:var(--accent)}
.site-footer p{line-height:1.9}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col a{display:block;padding:7px 0;transition:color var(--t)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity 520ms cubic-bezier(.2,.7,.3,1),transform 520ms cubic-bezier(.2,.7,.3,1)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:64px}
  .site-header.is-scrolled .header-inner{height:64px}
  .hero-panel{grid-template-columns:1fr;padding:36px 28px;min-height:0;gap:28px}
  .hero-panel::before{opacity:.2}
  .metrics-row{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .source-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section{padding:64px 0}
  .cta-section{padding:0 0 64px}
  .cta-banner{padding:32px 26px}
  .cta-banner::after{font-size:64px;right:12px}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .brand-text{font-size:17px}
  .header-actions .btn-primary{display:none}
  .hero-panel{padding:30px 22px;border-radius:18px}
  .page-hero h1{font-size:30px}
  .hero-actions .btn{flex:1 1 auto}
  .metrics-row{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:0}
  .source-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .case-wall{flex-direction:column}
  .case-card.is-tall .case-cover img,.case-card.is-wide .case-cover img{aspect-ratio:16/10}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left}
  .section{padding:56px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category5 */
:root{
  --ink:#0E1116;
  --ink-soft:#1B2027;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E1D8;
  --accent:#F2542D;
  --accent-ink:#C93E1A;
  --secondary:#16544A;
  --muted:#6B7079;
  --ok:#1F7A5A;
  --warn:#B4761A;
  --err:#B4322A;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-1:0 1px 2px rgba(14,17,22,.05);
  --sh-2:0 16px 40px -20px rgba(14,17,22,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:88px;
  --mono:ui-monospace,"Barlow Condensed",Menlo,Consolas,"Courier New",monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* ---------- 容器与板块 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.section-head h2{font-size:clamp(28px,3.2vw,42px);font-weight:800;line-height:1.18;letter-spacing:-.01em}
.section-head p{color:var(--muted);max-width:560px;margin-top:12px}
.eyebrow{
  display:inline-block;font-family:"Songti SC","Noto Serif SC",Georgia,serif;
  font-size:12px;letter-spacing:.18em;color:var(--secondary);
  text-transform:uppercase;margin-bottom:14px;
}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--accent-ink);transform:translateX(2px)}
.btn-primary:active{transform:translateX(1px) scale(.99)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--paper);transform:translateX(2px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14px;color:var(--accent)}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- 徽章 / 胶囊 ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;background:rgba(22,84,74,.1);color:var(--secondary);
}
.badge-accent{background:rgba(242,84,45,.12);color:var(--accent-ink)}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--muted);color:var(--muted)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--nav-h);transition:height .2s var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{display:block}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 0;font-size:15px;font-weight:500;color:var(--ink);
  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 center;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--accent-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--accent)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-cta{flex:0 0 auto;margin-left:8px}
.hamburger{
  display:none;margin-left:auto;width:46px;height:46px;border-radius:12px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.hamburger:hover{border-color:var(--ink)}
.hamburger span{display:block;width:20px;height:2px;background:var(--ink);position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink);
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,17,22,.45);opacity:0;visibility:hidden;
  transition:opacity .2s var(--ease),visibility .2s var(--ease);z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:#fff;
  z-index:100;transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:20px 22px 28px;overflow-y:auto;
  box-shadow:var(--sh-2);
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;
  cursor:pointer;font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{border-color:var(--ink)}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line);margin-top:8px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;
}
.drawer-nav a.is-active{color:var(--accent)}
.drawer-nav a:hover{background:var(--paper)}
.drawer-foot{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.drawer-meta{font-size:13px;color:var(--muted);line-height:1.9}

/* ---------- Hero ---------- */
.page-hero{padding:64px 0 72px;background:var(--paper);position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;right:-60px;top:-40px;width:320px;height:320px;
  background-image:radial-gradient(rgba(14,17,22,.16) 1px,transparent 1px);
  background-size:16px 16px;opacity:.35;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;position:relative}
.hero-copy h1{
  font-size:clamp(34px,4.4vw,54px);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero-copy .lead{font-size:17px;color:#3C4149;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.hero-fact strong{display:block;font-family:var(--mono);font-size:26px;font-weight:600;letter-spacing:-.01em}
.hero-fact span{font-size:13px;color:var(--muted);letter-spacing:.06em}
.hero-media{position:relative;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1)}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.hero-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 20px;font-size:13px;color:#fff;
  background:linear-gradient(180deg,rgba(14,17,22,0),rgba(14,17,22,.72));
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.6}

/* ---------- 栏目横滑卡 ---------- */
.channel-rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(272px,300px);
  gap:20px;overflow-x:auto;padding:4px 4px 20px;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.channel-rail::-webkit-scrollbar{height:6px}
.channel-rail::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}
.channel-card{
  scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-m);padding:26px 24px;display:flex;flex-direction:column;gap:12px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,84,45,.2)}
.channel-card:hover h3{color:var(--accent)}
.channel-icon{
  width:44px;height:44px;border-radius:12px;background:var(--paper);color:var(--secondary);
  display:flex;align-items:center;justify-content:center;
}
.channel-card h3{font-size:18px;font-weight:700;transition:color .2s var(--ease)}
.channel-card p{font-size:14px;color:var(--muted);line-height:1.8;flex:1}

/* ---------- 筛选与信息列表 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:12px}
.pill{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:14px;font-weight:500;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.pill:hover{border-color:var(--ink)}
.pill.is-active{background:var(--accent);border-color:var(--accent);color:#fff}
.pill:active{transform:scale(.98)}
.feed{border-bottom:1px solid var(--line)}
.feed-row{
  display:grid;grid-template-columns:132px 1fr 200px;gap:26px;align-items:center;
  padding:24px 12px;border-top:1px solid var(--line);
  transition:background-color .2s var(--ease);
}
.feed-row:hover{background:#fff}
.feed-row:hover h3 a{color:var(--accent)}
.feed-date{font-family:var(--mono);font-size:15px;letter-spacing:.04em;color:var(--ink)}
.feed-date span{display:block;font-family:inherit;font-size:12px;letter-spacing:.06em;color:var(--secondary);margin-top:6px}
.feed-main h3{font-size:18px;font-weight:700;line-height:1.45;margin-bottom:8px}
.feed-main h3 a{transition:color .2s var(--ease)}
.feed-main p{font-size:14px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feed-thumb{
  border-radius:var(--r-m);overflow:hidden;border:1px solid var(--line);background:var(--paper);
}
.feed-thumb img{width:100%;height:120px;object-fit:cover;transition:transform .3s var(--ease)}
.feed-row:hover .feed-thumb img{transform:scale(1.04)}
.feed-empty{
  text-align:center;padding:64px 20px;border-top:1px solid var(--line);
  color:var(--muted);display:none;
}
.feed-empty.is-visible{display:block}
.feed-empty p{margin-bottom:16px}

/* ---------- 流程时间线 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:32px 28px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(22,84,74,.25)}
.step-num{
  font-family:var(--mono);font-size:44px;font-weight:600;line-height:1;
  color:rgba(14,17,22,.14);display:block;margin-bottom:16px;
}
.step h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.85}

/* ---------- 订阅深色板块 ---------- */
.subscribe{background:var(--ink);color:#fff;border-radius:var(--r-l);padding:52px 48px;overflow:hidden;position:relative}
.subscribe::after{
  content:"";position:absolute;right:-40px;bottom:-60px;width:260px;height:260px;
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.subscribe-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;position:relative;z-index:1}
.subscribe h2{font-size:clamp(24px,2.6vw,34px);font-weight:800;line-height:1.24;margin-bottom:16px}
.subscribe p{color:rgba(255,255,255,.7);font-size:15px}
.subscribe .eyebrow{color:rgba(255,255,255,.55)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:10px}
.field label{font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,.72)}
.field input,.field select{
  height:48px;border-radius:var(--r-s);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field input::placeholder{color:rgba(255,255,255,.42)}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--accent);background:rgba(255,255,255,.1);
  box-shadow:0 0 0 3px rgba(242,84,45,.18);
}
.field select option{color:var(--ink)}
.form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px}
.form-note{font-size:13px;color:rgba(255,255,255,.55)}
.form-msg{grid-column:1 / -1;font-size:13px;color:#fff;display:none}
.form-msg.is-visible{display:block}
.form-msg.is-error{color:#F8B4A6}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:110px}
.faq-aside h2{font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.2;margin-bottom:16px}
.faq-aside p{color:var(--muted);font-size:15px;margin-bottom:24px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:17px;font-weight:600;line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent-ink)}
.faq-sign{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--accent);
  transition:transform .25s var(--ease),border-color .2s var(--ease);
}
.faq-item.is-open .faq-sign{transform:rotate(180deg);border-color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 40px 24px 4px;color:#3C4149;font-size:15px}

/* ---------- 结尾 CTA ---------- */
.cta-banner{
  background:var(--ink);color:#fff;border-radius:var(--r-l);padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-banner::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  background:radial-gradient(rgba(242,84,45,.35) 1px,transparent 1px);
  background-size:16px 16px;opacity:.5;pointer-events:none;
}
.cta-banner h2{font-size:clamp(24px,2.8vw,36px);font-weight:800;line-height:1.24;position:relative}
.cta-banner p{color:rgba(255,255,255,.7);margin-top:12px;max-width:560px;position:relative}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.6);margin-top:96px;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.site-footer p{font-size:14px;line-height:1.9;max-width:340px}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.06em;margin:0 0 18px}
.footer-col a{display:block;font-size:14px;line-height:2.2;transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;
}

/* ---------- 滚动进场 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in-view{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav,.header-cta{display:none}
  .hamburger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .step-grid{grid-template-columns:1fr}
  .subscribe-grid{grid-template-columns:1fr;gap:32px}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .page-hero{padding:40px 0 52px}
  .hero-facts{gap:22px}
  .hero-fact strong{font-size:22px}
  .feed-row{grid-template-columns:1fr;gap:14px;padding:20px 4px}
  .feed-thumb{order:-1;max-width:180px}
  .feed-thumb img{height:100px}
  .subscribe{padding:34px 24px}
  .form-grid{grid-template-columns:1fr}
  .cta-banner{padding:34px 24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-q{font-size:16px;padding:18px 2px}
  .faq-a p{padding-right:8px}
}
@media (max-width:520px){
  .channel-rail{grid-auto-columns:minmax(240px,86vw)}
  .btn{width:100%}
  .hero-actions .btn,.cta-actions .btn,.form-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}