/* roulang page: index */
:root{
  --brand:#0ACF97;
  --brand-ink:#069B72;
  --brand-soft:#E6FAF4;
  --accent:#F2603C;
  --ink-900:#0F1216;
  --ink-700:#14181D;
  --ink-500:#5C646E;
  --ink-300:#9AA1AA;
  --paper:#FBFAF7;
  --paper-2:#F2EFE9;
  --line:#E4E0D8;
  --line-dark:rgba(255,255,255,.12);
  --radius-card:14px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,18,22,.04);
  --shadow-2:0 12px 32px rgba(15,18,22,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink-900);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-ink)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
button,input{font-family:inherit;font-size:inherit}
::selection{background:var(--brand-soft);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.hero-wrap{max-width:1280px;margin:0 auto;padding-left:24px;padding-right:24px}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(251,250,247,.86);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:var(--paper);box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--ink-900);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark span{
  width:11px;height:11px;border-radius:3px;background:var(--brand);
  display:block;
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900);white-space:nowrap}
.brand-text:hover{color:var(--ink-900)}

.nav-search{position:relative;flex:1 1 auto;max-width:520px}
.nav-search svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:17px;height:17px;stroke:var(--ink-500);fill:none;stroke-width:1.8;stroke-linecap:round;pointer-events:none}
.nav-search input{
  width:100%;height:48px;border-radius:999px;border:1px solid var(--line);
  background:#fff;padding:0 100px 0 44px;color:var(--ink-700);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search input::placeholder{color:var(--ink-300);transition:opacity .15s ease}
.nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.nav-search input:focus::placeholder{opacity:.45}
.nav-search-btn{
  position:absolute;right:7px;top:50%;transform:translateY(-50%);
  height:34px;padding:0 16px;border-radius:999px;border:0;
  background:var(--ink-900);color:#fff;font-size:13px;font-weight:700;letter-spacing:.04em;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.nav-search-btn:hover{background:var(--brand);color:var(--ink-900)}

.nav-menu{display:flex;align-items:center;gap:20px;flex:0 0 auto}
.nav-link-item{
  position:relative;font-size:14px;font-weight:600;color:var(--ink-500);
  padding:6px 0;white-space:nowrap;
}
.nav-link-item::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width .24s var(--ease);
}
.nav-link-item:hover{color:var(--ink-900)}
.nav-link-item:hover::after{width:100%}
.nav-link-item.is-active{color:var(--ink-900)}
.nav-link-item.is-active::after{width:100%}

.btn-ink{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);border:0;
  background:var(--ink-900);color:#fff;font-size:14px;font-weight:800;letter-spacing:.02em;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-ink:hover{background:var(--brand);color:var(--ink-900);transform:translateY(-1px)}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;flex:0 0 auto;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--ink-900);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--ink-900);
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.search-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center}
.search-toggle svg{width:17px;height:17px;stroke:var(--ink-900);fill:none;stroke-width:1.8;stroke-linecap:round}

.mobile-search{
  display:none;padding:0 0 14px;
}
.mobile-search.is-open{display:block}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-label{
  display:flex;align-items:center;gap:10px;font-family:var(--font-mono);
  font-size:11px;letter-spacing:.14em;color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.sec-label::before{content:"";width:22px;height:1px;background:var(--brand)}
.sec-title{font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.25;color:var(--ink-900);letter-spacing:-.01em}
.sec-desc{margin-top:12px;font-size:16px;line-height:1.8;color:var(--ink-500);max-width:660px}
.sec-ghost{
  font-family:var(--font-mono);font-size:120px;line-height:1;font-weight:700;
  color:var(--ink-900);opacity:.05;user-select:none;pointer-events:none;
}
.section-relative{position:relative;overflow:hidden}
.ghost-abs{position:absolute;right:24px;top:56px}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--ink-900);
  padding-bottom:3px;position:relative;white-space:nowrap;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1)}
.link-arrow svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .24s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ Hero ============ */
.hero{padding:64px 0 72px;position:relative;background:var(--paper);overflow:hidden}
.hero-grid-lines{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,var(--ink-900) 1px,transparent 1px),
                   linear-gradient(to bottom,var(--ink-900) 1px,transparent 1px);
  background-size:120px 120px;opacity:.035;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-ink);
  font-size:11px;font-weight:700;letter-spacing:.08em;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(34px,5vw,62px);font-weight:800;line-height:1.12;letter-spacing:-.02em;
  color:var(--ink-900);max-width:14em;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--ink-500);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);border:0;
  background:var(--ink-900);color:#fff;font-weight:800;font-size:15px;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-main:hover{background:var(--brand);color:var(--ink-900);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  border:1.5px solid var(--ink-900);background:transparent;color:var(--ink-900);font-weight:800;font-size:15px;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:38px;
  font-family:var(--font-mono);font-size:12px;color:var(--ink-300);letter-spacing:.04em;
}
.hero-meta span.val{color:var(--ink-900);font-weight:700;font-size:14px;margin-right:6px}
.hero-meta .divider{width:1px;height:16px;background:var(--line)}

.hero-figure{position:relative;border-radius:var(--radius-panel);overflow:hidden;aspect-ratio:4/3;background:var(--paper-2)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-mini{
  position:absolute;right:16px;bottom:16px;background:#fff;border-radius:14px;
  box-shadow:var(--shadow-2);padding:12px 14px;min-width:170px;
}
.hero-mini p{font-family:var(--font-mono);font-size:11px;color:var(--ink-300);letter-spacing:.06em}
.hero-mini p + p{color:var(--ink-900);font-weight:700;margin-top:4px}

/* ============ 主张带 ============ */
.claim-band{background:var(--paper-2);padding:48px 0}
.claim-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.claim-cell{padding:6px 26px;border-left:1px solid var(--line)}
.claim-cell:first-child{border-left:0;padding-left:0}
.claim-cell .num{font-family:var(--font-mono);font-size:11px;color:var(--brand);letter-spacing:.14em}
.claim-cell h3{margin-top:12px;font-size:15px;font-weight:700;color:var(--ink-900);line-height:1.6}
.claim-cell p{margin-top:8px;font-size:13px;line-height:1.75;color:var(--ink-500)}

/* ============ 故事区 ============ */
.story-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.story-text p{margin-top:16px;font-size:16px;line-height:1.85;color:var(--ink-500)}
.story-text .link-arrow{margin-top:28px}
.story-media{border-radius:var(--radius-panel);overflow:hidden;aspect-ratio:16/10;background:var(--paper-2)}
.story-media img{width:100%;height:100%;object-fit:cover}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:32px;border-top:1px solid var(--line);padding-top:24px}
.timeline-item{position:relative;padding-right:18px}
.timeline-item::before{
  content:"";position:absolute;left:0;top:-30px;width:9px;height:9px;border-radius:50%;
  background:var(--paper);border:2px solid var(--brand);
}
.timeline-item .t-year{font-family:var(--font-mono);font-size:12px;color:var(--accent);letter-spacing:.06em}
.timeline-item h4{margin-top:8px;font-size:14px;font-weight:700;color:var(--ink-900);line-height:1.5}
.timeline-item p{margin-top:6px;font-size:12.5px;line-height:1.7;color:var(--ink-500)}

/* ============ 内容卡 ============ */
.card-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  display:flex;flex-direction:column;height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.card-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.card-media{position:relative;overflow:hidden;background:var(--paper-2)}
.card-media.ratio-16-10{aspect-ratio:16/10}
.card-media.ratio-2-1{aspect-ratio:2/1}
.card-media.ratio-4-5{aspect-ratio:4/5}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card-item:hover .card-media img{transform:scale(1.03)}
.card-tag{
  position:absolute;left:12px;top:12px;height:24px;padding:0 10px;border-radius:10px;
  background:rgba(251,250,247,.92);color:var(--ink-900);
  font-size:11px;font-weight:700;letter-spacing:.06em;display:inline-flex;align-items:center;
}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto}
.card-body h3{font-size:19px;font-weight:600;line-height:1.4;color:var(--ink-900)}
.card-body .card-text{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-500)}
.card-foot{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.card-date{font-family:var(--font-mono);font-size:12px;color:var(--ink-300);letter-spacing:.04em}
.card-foot svg{width:15px;height:15px;stroke:var(--ink-900);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .24s var(--ease)}
.card-item:hover .card-foot svg{transform:translateX(4px)}
.card-sm h3{font-size:16px}
.card-sm .card-body{padding:16px}
.card-sm .card-text{font-size:13px;line-height:1.7}

/* ============ 最新信息列表 ============ */
.news-list{border-top:1px solid var(--line)}
.news-row{border-bottom:1px solid var(--line);transition:background .22s var(--ease)}
.news-row:hover{background:var(--paper-2)}
.news-link{
  display:grid;grid-template-columns:88px 1fr auto 32px;gap:24px;align-items:center;
  padding:24px 12px;
}
.news-date{font-family:var(--font-mono);text-align:center;color:var(--ink-300)}
.news-date .d-day{display:block;font-size:22px;font-weight:700;color:var(--ink-900);line-height:1.1}
.news-date .d-ym{display:block;font-size:11px;letter-spacing:.06em;margin-top:2px}
.news-main h3{font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.45}
.news-main p{margin-top:8px;font-size:14px;color:var(--ink-500);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-cat{
  height:26px;padding:0 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand-ink);
  font-size:11px;font-weight:700;letter-spacing:.06em;display:inline-flex;align-items:center;white-space:nowrap;
}
.news-arrow svg{width:16px;height:16px;stroke:var(--ink-900);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .24s var(--ease)}
.news-row:hover .news-arrow svg{transform:translateX(4px)}

.empty-state{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;
}
.empty-state svg{width:34px;height:34px;stroke:var(--ink-300);fill:none;stroke-width:1.5;margin:0 auto 14px;display:block}
.empty-state p{font-size:15px;color:var(--ink-500)}
.empty-state .btn-ghost{height:42px;padding:0 20px;font-size:14px;margin-top:20px}

.list-foot{margin-top:36px;display:flex;justify-content:center}

/* ============ 数据带 ============ */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-cell{padding:0 28px;border-left:1px solid var(--line)}
.stat-cell:first-child{border-left:0;padding-left:0}
.stat-num{
  font-family:var(--font-mono);font-size:clamp(32px,4vw,52px);font-weight:700;
  color:var(--ink-900);line-height:1.05;letter-spacing:-.02em;
}
.stat-num em{font-style:normal;color:var(--brand);font-size:.55em;margin-left:2px}
.stat-cell p{margin-top:10px;font-size:13px;color:var(--ink-500);line-height:1.7}
.partner-line{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 32px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--ink-300);
  opacity:.55;transition:opacity .24s var(--ease);
}
.partner-line:hover{opacity:1}

/* ============ FAQ ============ */
.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;padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:17px;font-weight:600;color:var(--ink-900);cursor:pointer;
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--brand-ink)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-icon i{position:absolute;background:var(--ink-900);transition:transform .22s var(--ease),background .22s var(--ease)}
.faq-icon i:first-child{left:0;top:7.5px;width:16px;height:1.5px}
.faq-icon i:last-child{left:7.5px;top:0;width:1.5px;height:16px}
.faq-item.is-open .faq-icon i:last-child{transform:rotate(90deg)}
.faq-item.is-open .faq-q{color:var(--ink-900)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--ink-500);max-width:760px}

/* ============ CTA 面板 ============ */
.cta-panel{
  background:var(--ink-900);border-radius:var(--radius-panel);padding:56px 48px;
  display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;color:#fff;
}
.cta-panel .brand-text{color:#fff}
.cta-panel h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.25;color:#fff;margin-top:18px}
.cta-panel .cta-desc{margin-top:14px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.7)}
.cta-form{display:flex;gap:12px;align-items:flex-end}
.cta-form .field{flex:1 1 auto}
.cta-form label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.72);margin-bottom:8px}
.cta-form input{
  width:100%;height:48px;border-radius:var(--radius-btn);border:0;border-bottom:1px solid var(--line-dark);
  background:transparent;color:#fff;padding:0 4px;transition:border-color .22s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.38)}
.cta-form input:focus{outline:none;border-bottom-color:var(--brand)}
.cta-form .btn-main{background:var(--brand);color:var(--ink-900);flex:0 0 auto}
.cta-form .btn-main:hover{background:#fff;color:var(--ink-900)}
.cta-note{margin-top:14px;font-size:12px;color:rgba(255,255,255,.5)}
.form-ok{
  display:none;margin-top:16px;padding:10px 16px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand-ink);font-size:13px;font-weight:600;
}
.form-ok.is-visible{display:inline-block}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-col h4{
  font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.08em;margin-bottom:20px;
}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin-bottom:18px}
.footer-col li{margin-bottom:12px}
.footer-col li a{
  font-size:14px;color:rgba(255,255,255,.72);position:relative;padding-bottom:2px;
}
.footer-col li a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width .24s var(--ease);
}
.footer-col li a:hover{color:#fff}
.footer-col li a:hover::after{width:100%}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-text{color:#fff;font-size:18px}
.social-row{display:flex;gap:10px;margin-top:6px}
.social-row a{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line-dark);
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.72);
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.social-row a:hover{background:var(--brand);color:var(--ink-900);border-color:var(--brand)}
.social-row svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.footer-bottom{
  margin-top:64px;border-top:1px solid var(--line-dark);padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.footer-bottom .mono{letter-spacing:.06em}
.to-top{
  display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);font-size:12.5px;
}
.to-top:hover{color:var(--brand)}
.to-top svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ============ offcanvas ============ */
.offcanvas{background:var(--paper);border-left:0}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas-body{padding:0}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 20px;font-size:16px;font-weight:600;color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:var(--ink-900);background:var(--paper-2)}
.drawer-link.is-active{color:var(--brand-ink)}

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

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  .sec-ghost{font-size:104px}
}
@media (max-width:1199.98px){
  .container{max-width:960px}
  .hero-wrap{max-width:960px}
  .nav-menu{gap:16px}
  .nav-link-item{font-size:13.5px}
}
@media (max-width:991.98px){
  .container,.hero-wrap{padding-left:20px;padding-right:20px}
  .section{padding:72px 0}
  .nav-inner{height:60px;gap:14px}
  .nav-menu{display:none}
  .nav-search{display:none}
  .nav-toggle{display:flex}
  .search-toggle{display:flex}
  .hero{padding:48px 0 56px}
  .hero-figure{margin-top:36px}
  .story-grid{grid-template-columns:1fr;gap:36px}
  .claim-grid{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .claim-cell:nth-child(3){border-left:0;padding-left:0}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:36px 0}
  .stat-cell:nth-child(3){border-left:0;padding-left:0}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:44px 28px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .ghost-abs{display:none}
  .sec-ghost{display:none}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px}
  .timeline{grid-template-columns:repeat(2,1fr);gap:26px 0;border-top:0}
  .timeline-item::before{display:none}
  .news-link{grid-template-columns:64px 1fr 24px;gap:14px;padding:20px 4px}
  .news-cat{grid-column:2;justify-self:start;margin-top:10px}
  .news-arrow{grid-row:1;grid-column:3}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .cta-form{flex-direction:column;align-items:stretch}
  .cta-form .btn-main{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .claim-grid{grid-template-columns:1fr;gap:24px 0}
  .claim-cell{border-left:0;padding:0;border-top:1px solid var(--line);padding-top:20px}
  .claim-cell:first-child{border-top:0;padding-top:0}
  .stats-band{grid-template-columns:1fr;gap:28px 0}
  .stat-cell{border-left:0;padding:0;border-top:1px solid var(--line);padding-top:22px}
  .stat-cell:first-child{border-top:0;padding-top:0}
}
@media (max-width:575.98px){
  .container,.hero-wrap{padding-left:16px;padding-right:16px}
  .brand-text{font-size:16px}
  .card-body{padding:16px}
  .card-body h3{font-size:17px}
  .hero h1{font-size:clamp(28px,8vw,36px)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --brand:#0ACF97;
  --brand-ink:#069B72;
  --brand-soft:#E6FAF4;
  --accent:#F2603C;
  --ink-900:#0F1216;
  --ink-700:#14181D;
  --ink-500:#5C646E;
  --ink-300:#9AA1AA;
  --paper:#FBFAF7;
  --paper-2:#F2EFE9;
  --line:#E4E0D8;
  --line-dark:rgba(255,255,255,.12);
  --radius-card:14px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-rest:0 1px 2px rgba(15,18,22,.04);
  --shadow-hover:0 12px 32px rgba(15,18,22,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink-900);text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
button,input{font-family:inherit;font-size:inherit}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

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

/* ============ 通用按钮 ============ */
.btn-ink,
.btn-line,
.btn-text{display:inline-flex;align-items:center;gap:8px;border-radius:var(--radius-btn);transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease)}
.btn-ink{
  height:48px;padding:0 26px;background:var(--ink-900);color:#fff;font-weight:800;border:1px solid var(--ink-900);
}
.btn-ink:hover{background:var(--brand);border-color:var(--brand);color:var(--ink-900);transform:translateY(-1px)}
.btn-line{
  height:48px;padding:0 24px;background:transparent;border:1.5px solid var(--ink-900);color:var(--ink-900);font-weight:700;
}
.btn-line:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn-text{
  padding:0;border:0;background:none;color:var(--ink-900);font-weight:700;position:relative;gap:6px;
}
.btn-text::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;background:var(--brand);transition:width .24s var(--ease);
}
.btn-text:hover::after{width:100%}
.btn-text svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;transition:transform .24s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(251,250,247,.86);
  border-bottom:1px solid var(--line);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:var(--paper);box-shadow:0 6px 20px rgba(15,18,22,.06)}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--ink-900);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark span{width:10px;height:10px;border-radius:3px;background:var(--brand);display:block}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900);white-space:nowrap}

.header-search{
  position:relative;flex:1 1 auto;max-width:560px;
  display:flex;align-items:center;
  height:48px;border:1px solid var(--line);border-radius:999px;background:#fff;
  padding:0 6px 0 44px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.header-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.header-search .search-icon{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;stroke:var(--ink-700);fill:none;stroke-width:1.8;
}
.header-search input{
  flex:1 1 auto;border:0;outline:none;background:transparent;
  height:100%;font-size:14.5px;color:var(--ink-700);
}
.header-search input::placeholder{color:var(--ink-300);transition:opacity .15s linear}
.header-search input:focus::placeholder{opacity:0}
.header-search .search-btn{
  flex:0 0 auto;height:32px;padding:0 16px;border:0;border-radius:999px;
  background:var(--paper-2);color:var(--ink-900);font-size:13px;font-weight:700;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.header-search .search-btn:hover{background:var(--brand);color:var(--ink-900)}

.nav-menu{display:flex;align-items:center;gap:22px;margin-left:auto;flex:0 0 auto}
.nav-link-item{
  position:relative;font-size:14px;font-weight:600;color:var(--ink-500);
  padding:6px 0;white-space:nowrap;transition:color .2s var(--ease);
}
.nav-link-item::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width .24s var(--ease);
}
.nav-link-item:hover{color:var(--ink-900)}
.nav-link-item:hover::after{width:100%}
.nav-link-item.is-active{color:var(--ink-900)}
.nav-link-item.is-active::after{width:100%}
.nav-menu .btn-ink{height:40px;padding:0 20px;font-size:14px}

.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;color:var(--ink-900);align-items:center;justify-content:center;
}
.nav-toggle i{font-size:20px}

/* 移动抽屉 */
.offcanvas.mobile-drawer{background:var(--paper);width:min(88vw,380px)}
.mobile-drawer .drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--line);
}
.mobile-drawer .drawer-search{
  display:flex;align-items:center;gap:8px;margin:16px 20px;
  height:46px;border:1px solid var(--line);border-radius:999px;padding:0 6px 0 16px;background:#fff;
}
.mobile-drawer .drawer-search input{flex:1;border:0;outline:none;background:transparent;font-size:14.5px}
.mobile-drawer .drawer-search button{
  height:32px;padding:0 14px;border:0;border-radius:999px;background:var(--ink-900);color:#fff;font-size:13px;font-weight:700;
}
.mobile-drawer .drawer-list li{border-bottom:1px solid var(--line)}
.mobile-drawer .drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;line-height:52px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.mobile-drawer .drawer-list a.is-active{color:var(--brand-ink)}
.mobile-drawer .drawer-cta{padding:20px}

/* ============ 面包屑 ============ */
.crumbs{padding:22px 0 0}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--ink-300)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--ink-300)}
.crumbs a{color:var(--ink-300)}
.crumbs a:hover{color:var(--brand-ink)}
.crumbs .current{color:var(--ink-700);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.article-head{padding:40px 0 32px}
.article-head .inner{max-width:760px}
.badge-soft,
.badge-neutral{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  font-size:11px;letter-spacing:.06em;font-weight:700;
}
.badge-soft{background:var(--brand-soft);color:var(--brand-ink)}
.badge-neutral{background:var(--paper-2);color:var(--ink-500)}
.article-head h1{
  margin-top:18px;
  font-size:clamp(28px,3.6vw,44px);font-weight:700;line-height:1.2;letter-spacing:-.01em;color:var(--ink-900);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;
  font-size:12px;letter-spacing:.06em;color:var(--ink-300);
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
}
.article-meta span{display:inline-flex;align-items:center;gap:10px}
.article-meta span+span::before{content:"";width:1px;height:12px;background:var(--line)}
.article-head .rule{margin-top:26px;height:1px;background:var(--line)}

/* ============ 正文 ============ */
.article-wrap{padding:0 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,760px);gap:48px}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-700)}
.article-body > *+*{margin-top:1.2em}
.article-body h2{
  position:relative;margin-top:40px;padding-left:16px;
  font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;color:var(--ink-900);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.45em;width:3px;height:.85em;border-radius:2px;background:var(--brand);
}
.article-body h3{
  margin-top:32px;font-size:19px;font-weight:600;color:var(--ink-900);
}
.article-body p{color:var(--ink-700)}
.article-body a{color:var(--ink-900);border-bottom:2px solid var(--brand)}
.article-body a:hover{color:var(--brand-ink)}
.article-body ul,
.article-body ol{padding-left:22px;list-style:disc}
.article-body ol{list-style:decimal}
.article-body li+li{margin-top:.5em}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--brand);
  background:var(--paper-2);border-radius:0 var(--radius-card) var(--radius-card) 0;color:var(--ink-500);
}
.article-body img{border-radius:10px;margin:1.6em 0}
.article-body figcaption{margin-top:10px;font-size:12px;color:var(--ink-300)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px}
.article-body th,
.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--paper-2);font-weight:700}
.article-body pre{
  background:var(--ink-900);color:#EDF1F0;border-radius:10px;padding:16px 18px;overflow:auto;
  font-family:var(--font-mono);font-size:13.5px;line-height:1.7;
}
.article-body code{
  font-family:var(--font-mono);font-size:.92em;background:var(--paper-2);
  padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* 文中 CTA 卡 */
.inline-cta{
  margin:2em 0;padding:18px 20px;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
}
.inline-cta p{font-size:15px;color:var(--ink-500)}
.inline-cta a{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;border-bottom:2px solid var(--brand)}
.inline-cta a svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.8}

/* 阅读侧栏 */
.article-side{display:none}
.side-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
  padding:20px;box-shadow:var(--shadow-rest);position:sticky;top:96px;
}
.side-card h3{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.side-list li{border-top:1px solid var(--line);padding:12px 0}
.side-list li:first-child{border-top:0;padding-top:0}
.side-list a{font-size:14.5px;color:var(--ink-700);display:block}
.side-list a:hover{color:var(--brand-ink)}
.side-list .side-meta{display:block;margin-top:6px;font-size:11px;letter-spacing:.06em;color:var(--ink-300);font-family:var(--font-mono)}

/* 空态 */
.empty-state{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:44px 28px;text-align:center;
}
.empty-state svg{width:34px;height:34px;stroke:var(--ink-300);fill:none;stroke-width:1.5;margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--ink-500);margin-bottom:18px}

/* ============ 底部互动区 ============ */
.article-foot{padding:0 0 72px}
.article-foot .inner{max-width:760px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;padding-top:26px;border-top:1px solid var(--line)}
.pager{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:28px;
}
.pager a{
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
  padding:18px 20px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.pager a:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--ink-900)}
.pager .dir{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--ink-300)}
.pager .ttl{display:block;margin-top:8px;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.45}
.foot-actions{margin-top:26px}

/* ============ 相关推荐 ============ */
.section{padding:96px 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;
}
.section-kicker{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--brand);font-weight:700;
  display:block;margin-bottom:12px;
}
.section-head h2{font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.25;color:var(--ink-900)}
.section-head p{margin-top:10px;font-size:16px;color:var(--ink-500)}

.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr))}
.content-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-rest);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.content-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D6D1C6}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.content-card:hover .card-media img{transform:scale(1.03)}
.card-tag{
  position:absolute;top:12px;left:12px;
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:10px;
  background:rgba(251,250,247,.9);color:var(--ink-900);font-size:11px;letter-spacing:.06em;font-weight:700;
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-body h3{font-size:18px;font-weight:600;line-height:1.4;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14.5px;color:var(--ink-500);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;
  padding-top:14px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:12px;color:var(--ink-300);
}
.card-foot svg{width:16px;height:16px;stroke:var(--ink-900);fill:none;stroke-width:1.8;transition:transform .22s var(--ease)}
.content-card:hover .card-foot svg{transform:translateX(4px)}

/* ============ 订阅面板 ============ */
.subscribe-panel{
  position:relative;overflow:hidden;border-radius:var(--radius-panel);
  background:var(--ink-900);color:#fff;padding:56px 0;
}
.subscribe-panel::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.16;
}
.subscribe-inner{position:relative;display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center}
.subscribe-inner .brand-line{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.subscribe-inner .brand-text{color:#fff;font-size:17px;font-weight:800}
.subscribe-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;color:#fff}
.subscribe-inner .lead{margin-top:12px;font-size:15px;color:rgba(255,255,255,.7)}
.subscribe-form{display:flex;gap:12px;align-items:flex-end}
.subscribe-form .field{flex:1 1 auto}
.subscribe-form label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.72);margin-bottom:8px}
.subscribe-form input{
  width:100%;height:48px;padding:0 4px;color:#fff;background:transparent;
  border:0;border-bottom:1px solid var(--line-dark);outline:none;transition:border-color .22s var(--ease);
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.4)}
.subscribe-form input:focus{border-bottom-color:var(--brand)}
.form-hint{margin-top:14px;font-size:12px;color:rgba(255,255,255,.5)}
.form-ok{
  display:none;margin-top:16px;padding:10px 14px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand-ink);font-size:13px;font-weight:700;
}
.form-ok.show{display:inline-block}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#fff;padding-top:72px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:#fff}
.footer-brand .brand-mark span{background:var(--brand)}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:800}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72)}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);margin-bottom:18px}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{
  position:relative;font-size:14px;color:rgba(255,255,255,.72);transition:color .2s var(--ease);
}
.footer-col ul a::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--brand);transition:width .24s var(--ease);
}
.footer-col ul a:hover{color:#fff}
.footer-col ul a:hover::after{width:100%}
.social-row{display:flex;gap:12px;margin-top:20px}
.social-row a{
  width:38px;height:38px;border:1px solid var(--line-dark);border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.social-row a:hover{border-color:var(--brand);background:rgba(10,207,151,.12)}
.social-row svg{width:18px;height:18px;stroke:rgba(255,255,255,.8);fill:none;stroke-width:1.6}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid var(--line-dark);padding:22px 0;font-size:13px;color:rgba(255,255,255,.6);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.72);font-size:13px}
.to-top:hover{color:#fff}
.to-top svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8}

/* ============ 入场动画 ============ */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  [data-reveal]{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .article-layout{grid-template-columns:minmax(0,760px) 300px}
  .article-side{display:block}
}
@media (max-width:1199px){
  .container{max-width:960px}
  .nav-menu{gap:16px}
  .header-search{max-width:420px}
}
@media (max-width:991px){
  .header-inner{min-height:60px;gap:14px}
  .header-search{display:none}
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:72px 0}
  .subscribe-inner{grid-template-columns:1fr;gap:28px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .article-head{padding:28px 0 24px}
  .article-body{font-size:16px}
  .pager{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .subscribe-panel{padding:40px 0}
  .subscribe-form{flex-direction:column;align-items:stretch}
  .subscribe-form .btn-ink{width:100%;justify-content:center}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .brand-text{font-size:16px}
  .article-meta{gap:8px}
  .article-meta span+span::before{height:10px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --brand:#0ACF97;
  --brand-ink:#069B72;
  --brand-soft:#E6FAF4;
  --accent:#F2603C;
  --ink-900:#0F1216;
  --ink-700:#14181D;
  --ink-500:#5C646E;
  --ink-300:#9AA1AA;
  --paper:#FBFAF7;
  --paper-2:#F2EFE9;
  --line:#E4E0D8;
  --line-dark:rgba(255,255,255,.12);
  --r-card:14px;
  --r-panel:20px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(15,18,22,.04);
  --sh-2:0 12px 32px rgba(15,18,22,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono: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:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul{list-style:none;padding:0}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
button{font-family:inherit}
input{font-family:inherit}
::selection{background:var(--brand-soft);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- container ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (max-width:1199px){.container{max-width:1140px}}
@media (max-width:991px){.container{max-width:100%;padding-left:20px;padding-right:20px}}
@media (max-width:575px){.container{padding-left:16px;padding-right:16px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(251,250,247,.88);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:var(--paper);box-shadow:0 1px 2px rgba(15,18,22,.06)}
.header-inner{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:22px;height:22px;border-radius:6px;background:var(--ink-900);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-mark span{width:8px;height:8px;border-radius:2px;background:var(--brand);display:block}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900);white-space:nowrap}

.search-wrap{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.search-box{position:relative;width:100%;max-width:560px;display:flex;align-items:center}
.search-icon{position:absolute;left:16px;width:18px;height:18px;stroke:var(--ink-500);fill:none;stroke-width:1.7;stroke-linecap:round;pointer-events:none}
.search-input{
  width:100%;height:48px;border-radius:999px;border:1px solid var(--line);background:#fff;
  padding:0 96px 0 44px;font-size:14px;color:var(--ink-700);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-input::placeholder{color:var(--ink-300);transition:opacity .15s var(--ease)}
.search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.search-input:focus::placeholder{opacity:.45}
.search-btn{
  position:absolute;right:6px;height:36px;padding:0 18px;border-radius:999px;border:0;
  background:var(--ink-900);color:#fff;font-size:13px;font-weight:600;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.search-btn:hover{background:var(--brand);color:var(--ink-900)}

.nav-menu{display:flex;align-items:center;gap:22px;flex:0 0 auto}
.nav-link-item{position:relative;font-size:14px;font-weight:600;color:var(--ink-500);padding:6px 0;white-space:nowrap}
.nav-link-item::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);transition:width .24s var(--ease)}
.nav-link-item:hover{color:var(--ink-900)}
.nav-link-item:hover::after{width:100%}
.nav-link-item.is-active{color:var(--ink-900)}
.nav-link-item.is-active::after{width:100%}

.btn-ink{
  display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;
  border-radius:var(--r-btn);background:var(--ink-900);color:#fff;font-size:14px;font-weight:700;border:0;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.btn-ink:hover{background:var(--brand);color:var(--ink-900);transform:translateY(-1px)}
.btn-ink::after{display:none}

.menu-toggle,.search-toggle{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
}
.menu-toggle svg,.search-toggle svg{width:19px;height:19px;fill:none;stroke:var(--ink-900);stroke-width:1.7;stroke-linecap:round}

.mobile-search{display:none;padding:0 16px 16px;background:var(--paper)}
.site-header.search-open .mobile-search{display:block}
.mobile-search .search-box{max-width:100%}
.mobile-search .search-input{padding-right:96px}

.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,360px);background:var(--paper);
  border-left:1px solid var(--line);z-index:1060;padding:22px 20px 40px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s var(--ease);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--ink-300)}
.drawer-close{border:0;background:transparent;font-size:22px;line-height:1;color:var(--ink-500);cursor:pointer}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:16px;font-weight:600;color:var(--ink-700);border-bottom:1px solid var(--line)}
.drawer-nav a:hover{color:var(--brand-ink)}
.drawer-nav a.is-active{color:var(--brand-ink)}
.drawer-nav a svg{width:16px;height:16px;fill:none;stroke:var(--ink-300);stroke-width:1.7}
.drawer-cta{margin-top:22px}
.drawer-cta .btn-ink{width:100%}
.drawer-mask{position:fixed;inset:0;background:rgba(15,18,22,.36);z-index:1050;opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease)}
.drawer-mask.is-open{opacity:1;visibility:visible}

@media (max-width:1199px){
  .nav-menu{gap:16px}
  .nav-link-item{font-size:13.5px}
}
@media (max-width:991px){
  .header-inner{height:60px;gap:14px}
  .nav-menu{display:none}
  .search-wrap{display:none}
  .menu-toggle,.search-toggle{display:inline-flex}
  .brand-text{font-size:17px}
  .header-inner .menu-toggle{margin-left:auto}
}
@media (max-width:575px){
  .brand-text{font-size:15px;letter-spacing:-.02em}
  .header-inner{gap:10px}
}

/* ---------- category hero ---------- */
.category-hero{
  position:relative;
  min-height:340px;
  display:flex;align-items:center;
  padding:52px 0 60px;
  background:linear-gradient(rgba(251,250,247,.80),rgba(251,250,247,.80)),url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.hero-inner{position:relative;width:100%}
.breadcrumb-line{font-size:12px;color:var(--ink-300);letter-spacing:.02em}
.breadcrumb-line a{border-bottom:1px solid transparent}
.breadcrumb-line a:hover{color:var(--ink-700)}
.breadcrumb-line .sep{margin:0 8px;color:var(--line)}
.breadcrumb-line .current{color:var(--ink-700)}
.category-hero h1{
  margin-top:22px;
  font-size:clamp(28px,3.6vw,44px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--ink-900);
  max-width:820px;
}
.hero-lead{margin-top:16px;font-size:16px;line-height:1.8;color:var(--ink-500);max-width:660px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.hero-num{
  position:absolute;right:0;bottom:-6px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.18em;color:var(--ink-300);
}
@media (max-width:767px){
  .category-hero{min-height:auto;padding:36px 0 44px}
  .hero-num{position:static;display:block;margin-top:24px;bottom:auto;right:auto}
}

/* ---------- badges ---------- */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  font-size:11px;letter-spacing:.06em;font-weight:600;
}
.tag-brand{background:var(--brand-soft);color:var(--brand-ink)}
.tag-neutral{background:var(--paper-2);color:var(--ink-500)}
.tag-dark{background:rgba(255,255,255,.10);color:rgba(255,255,255,.82)}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-alt{background:var(--paper-2)}
@media (max-width:991px){.section{padding:72px 0}}
@media (max-width:767px){.section{padding:56px 0}}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:44px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--brand);text-transform:uppercase}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--brand);display:block}
h2.section-title{margin-top:14px;font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--ink-900)}
.section-desc{margin-top:14px;font-size:16px;line-height:1.8;color:var(--ink-500);max-width:680px}

.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--ink-900);white-space:nowrap}
.text-link span.line{position:relative}
.text-link span.line::after{content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;background:var(--brand);transition:width .24s var(--ease)}
.text-link:hover span.line::after{width:100%}
.text-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;transition:transform .24s var(--ease)}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- strips (交替条带) ---------- */
.strip{padding:88px 0;border-top:1px solid var(--line)}
.strip:first-child{border-top:0}
.strip:nth-child(even){background:var(--paper-2)}
.strip-inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.strip.is-reverse .strip-media{order:-1}
.strip-num{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--brand)}
.strip h3{margin-top:14px;font-size:clamp(20px,2vw,26px);font-weight:700;line-height:1.35;color:var(--ink-900)}
.strip p{margin-top:16px;font-size:15.5px;line-height:1.85;color:var(--ink-500)}
.strip ul{margin-top:20px;display:grid;gap:10px}
.strip ul li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-700)}
.strip ul li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:2px;background:var(--brand)}
.strip-media{
  border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/11;background:var(--paper-2);
}
.strip-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.strip-media:hover img{transform:scale(1.03)}
@media (max-width:991px){
  .strip{padding:64px 0}
  .strip-inner{grid-template-columns:1fr;gap:32px}
  .strip.is-reverse .strip-media{order:0}
  .strip-media{aspect-ratio:16/10}
}
@media (max-width:767px){.strip{padding:52px 0}}

/* ---------- stats band ---------- */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);margin-top:8px}
.stat-item{padding:6px 28px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(32px,4vw,50px);font-weight:700;line-height:1.1;color:var(--ink-900);letter-spacing:-.02em}
.stat-num em{font-style:normal;color:var(--brand)}
.stat-label{margin-top:10px;font-size:14px;font-weight:600;color:var(--ink-700)}
.stat-note{margin-top:6px;font-size:13px;line-height:1.7;color:var(--ink-500)}
@media (max-width:991px){
  .stats-band{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .stat-item:nth-child(odd){border-left:0;padding-left:0}
  .stat-item{padding:0 24px}
}
@media (max-width:575px){
  .stats-band{grid-template-columns:1fr;gap:26px}
  .stat-item{border-left:0;padding:0;padding-bottom:22px;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:0;padding-bottom:0}
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr)}
.step{padding:0 32px;border-left:1px solid var(--line)}
.step:first-child{border-left:0;padding-left:0}
.step-index{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--accent)}
.step h3{margin-top:14px;font-size:19px;font-weight:600;color:var(--ink-900);line-height:1.4}
.step p{margin-top:12px;font-size:14.5px;line-height:1.8;color:var(--ink-500)}
@media (max-width:991px){
  .steps{grid-template-columns:1fr;gap:0}
  .step{border-left:0;padding:0 0 26px;border-bottom:1px solid var(--line);margin-bottom:26px}
  .step:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px}
.faq-accordion .accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  position:relative;width:100%;background:transparent;border:0;box-shadow:none;
  padding:24px 56px 24px 0;font-size:17px;font-weight:600;line-height:1.6;color:var(--ink-900);
  transition:color .22s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--ink-900);background:transparent;box-shadow:none}
.faq-accordion .accordion-button:focus{box-shadow:none}
.faq-accordion .accordion-button:hover{color:var(--brand-ink)}
.faq-accordion .accordion-button::after{
  content:"";position:absolute;right:10px;top:50%;width:12px;height:1px;margin:0;
  background:var(--ink-900);background-image:none;transform:translateY(-50%);
  transition:transform .22s var(--ease);
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;right:15.5px;top:50%;width:1px;height:12px;
  background:var(--ink-900);transform:translateY(-50%);transform-origin:center;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(90deg);opacity:0}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:translateY(-50%)}
.faq-accordion .accordion-body{padding:0 56px 24px 0;font-size:15.5px;line-height:1.85;color:var(--ink-500)}

/* ---------- cta bar ---------- */
.cta-bar{
  background:var(--ink-900);border-radius:var(--r-panel);padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-bar h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;line-height:1.35;color:#fff;letter-spacing:-.01em}
.cta-bar p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.7);max-width:560px}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;border:0;
  border-radius:var(--r-btn);background:var(--brand);color:var(--ink-900);font-size:15px;font-weight:800;
  white-space:nowrap;transition:background .24s var(--ease),transform .24s var(--ease),color .24s var(--ease);
}
.btn-brand:hover{background:#fff;color:var(--ink-900);transform:translateY(-1px)}
@media (max-width:991px){
  .cta-bar{flex-direction:column;align-items:flex-start;padding:36px 28px;gap:24px}
  .btn-brand{width:100%}
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding-top:72px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.72);border-bottom:2px solid transparent;padding-bottom:2px}
.footer-col ul a:hover{color:#fff;border-bottom-color:var(--brand)}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.10)}
.footer-brand .brand-text{color:#fff;font-size:18px}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-row a{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line-dark);transition:background .22s var(--ease),border-color .22s var(--ease);
}
.social-row a svg{width:17px;height:17px;fill:none;stroke:rgba(255,255,255,.75);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.social-row a:hover{background:rgba(255,255,255,.06);border-color:var(--brand)}
.social-row a:hover svg{stroke:var(--brand)}
.footer-bottom{
  margin-top:56px;padding:24px 0;border-top:1px solid var(--line-dark);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:12.5px;color:rgba(255,255,255,.55);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72)}
.to-top svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.to-top:hover{color:#fff}
@media (max-width:991px){
  .site-footer{padding-top:56px;margin-top:72px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- reveal ---------- */
html.js-ready .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
html.js-ready .reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js-ready .reveal{opacity:1;transform:none;transition:none}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;animation-iteration-count:1 !important}
}

/* roulang page: category2 */
:root{
  --brand:#0ACF97;
  --brand-ink:#069B72;
  --brand-soft:#E6FAF4;
  --accent:#F2603C;
  --ink-900:#0F1216;
  --ink-700:#14181D;
  --ink-500:#5C646E;
  --ink-300:#9AA1AA;
  --paper:#FBFAF7;
  --paper-2:#F2EFE9;
  --line:#E4E0D8;
  --line-dark:rgba(255,255,255,.12);
  --r-card:14px;
  --r-panel:20px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(15,18,22,.04);
  --sh-2:0 12px 32px rgba(15,18,22,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec:96px;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{list-style:none;padding:0;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

/* ===== container ===== */
.container{
  width:100%;
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}

/* ===== header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(251,250,247,.92);
  border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-stuck{
  background:var(--paper);
  box-shadow:0 1px 2px rgba(15,18,22,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:26px;height:26px;
  border-radius:8px;
  background:var(--ink-900);
  display:grid;place-items:center;
  flex-shrink:0;
}
.brand-mark span{
  width:10px;height:10px;
  border-radius:3px;
  background:var(--brand);
  display:block;
}
.brand-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink-900);
  white-space:nowrap;
}

.nav-search{
  position:relative;
  flex:1 1 auto;
  max-width:560px;
  display:flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 6px 0 16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search svg{
  width:18px;height:18px;
  flex-shrink:0;
  stroke:var(--ink-500);
  fill:none;
  stroke-width:1.6;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  border:0;
  background:transparent;
  outline:none;
  font-size:14.5px;
}
.nav-search input::placeholder{
  color:var(--ink-300);
  transition:opacity .15s var(--ease);
}
.nav-search:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 3px var(--brand-soft);
}
.nav-search:focus-within input::placeholder{opacity:.35;}
.nav-search button{
  height:32px;
  padding:0 14px;
  border:0;
  border-radius:999px;
  background:var(--ink-900);
  color:#fff;
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.nav-search button:hover{background:var(--brand);color:var(--ink-900);}

.nav-menu{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-link-item{
  position:relative;
  padding:8px 10px;
  font-size:14px;
  font-weight:600;
  color:var(--ink-500);
  white-space:nowrap;
  transition:color .22s var(--ease);
}
.nav-link-item::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:2px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link-item:hover{color:var(--ink-900);}
.nav-link-item:hover::after{transform:scaleX(1);}
.nav-link-item.is-active{color:var(--ink-900);}
.nav-link-item.is-active::after{transform:scaleX(1);}

.btn-ink{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:40px;
  padding:0 18px;
  margin-left:10px;
  background:var(--ink-900);
  color:#fff;
  border-radius:var(--r-btn);
  font-size:14px;
  font-weight:700;
  white-space:nowrap;
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-ink:hover{background:var(--brand);color:var(--ink-900);transform:translateY(-1px);}

.icon-btn{
  width:40px;height:40px;
  flex-shrink:0;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  display:grid;place-items:center;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.icon-btn svg{
  width:18px;height:18px;
  stroke:var(--ink-900);
  fill:none;
  stroke-width:1.7;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.icon-btn:hover{border-color:var(--brand);background:var(--brand-soft);}

.only-mobile{display:none;}
.mobile-search{
  position:absolute;
  left:0;right:0;top:100%;
  padding:12px 0;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.mobile-search .nav-search{max-width:none;}

/* offcanvas drawer */
.site-drawer{
  width:min(340px,86vw);
  background:var(--paper);
  border-left:1px solid var(--line);
}
.site-drawer .offcanvas-header{
  padding:18px 20px;
  border-bottom:1px solid var(--line);
}
.site-drawer .offcanvas-body{padding:12px 20px 32px;}
.site-drawer .brand-text{font-size:17px;}
.drawer-close{
  width:36px;height:36px;
  border:1px solid var(--line);
  border-radius:10px;
  background:transparent;
  display:grid;place-items:center;
}
.drawer-close svg{width:16px;height:16px;stroke:var(--ink-900);fill:none;stroke-width:1.7;stroke-linecap:round;}
.drawer-search{margin:16px 0 8px;}
.drawer-search .nav-search{max-width:none;height:44px;}
.drawer-link{
  display:flex;
  align-items:center;
  min-height:52px;
  padding-left:10px;
  border-bottom:1px solid var(--line);
  border-left:3px solid transparent;
  font-size:16px;
  font-weight:600;
  color:var(--ink-700);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.drawer-link:hover{color:var(--ink-900);background:var(--paper-2);}
.drawer-link.is-active{color:var(--ink-900);border-left-color:var(--brand);}
.drawer-cta{width:100%;margin:24px 0 0;}

/* ===== page hero ===== */
.page-hero{
  position:relative;
  overflow:hidden;
  min-height:340px;
  display:flex;
  align-items:flex-end;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.page-hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(251,250,247,.78) 0%,rgba(251,250,247,.86) 100%);
}
.page-hero-inner{
  position:relative;
  z-index:2;
  width:100%;
  padding-top:48px;
  padding-bottom:44px;
  display:flex;
  flex-direction:column;
  gap:28px;
}
.breadcrumb-line{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--ink-300);
  letter-spacing:.02em;
}
.breadcrumb-line a{color:var(--ink-300);transition:color .2s var(--ease);}
.breadcrumb-line a:hover{color:var(--brand-ink);}
.breadcrumb-line .current{color:var(--ink-700);}

.page-hero-foot{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
}
.page-hero-text{max-width:760px;}
.page-hero-text h1{
  margin-top:16px;
  font-size:clamp(28px,3.6vw,44px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--ink-900);
}
.hero-lead{
  margin-top:14px;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-500);
  max-width:640px;
}
.page-hero-index{
  font-size:26px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--brand);
  white-space:nowrap;
  padding-bottom:6px;
}
.badge-soft{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-ink);
  font-size:11px;
  font-weight:700;
  letter-spacing:.06em;
}

/* ===== sections ===== */
.section{
  position:relative;
  padding-top:var(--sec);
  padding-bottom:var(--sec);
}
.section--paper2{background:var(--paper-2);}
.section-head{
  position:relative;
  margin-bottom:48px;
}
.section-head h2{
  max-width:760px;
  margin-top:16px;
  font-size:clamp(22px,2.4vw,32px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.015em;
  color:var(--ink-900);
}
.section-sub{
  max-width:680px;
  margin-top:14px;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-500);
}
.section-no{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand-ink);
}
.section-no::before{
  content:"";
  width:20px;
  height:1px;
  background:var(--brand);
}
.ghost-no{
  position:absolute;
  right:0;
  top:-16px;
  font-family:var(--font-mono);
  font-size:110px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.04em;
  color:var(--ink-900);
  opacity:.05;
  pointer-events:none;
  user-select:none;
  display:none;
}
.section-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:48px;
}
.section-head-row .section-head{margin-bottom:0;}

.link-more{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink-900);
  white-space:nowrap;
  padding-bottom:3px;
}
.link-more::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.link-more:hover::after{transform:scaleX(1);}
.link-more svg{
  width:14px;height:14px;
  stroke:currentColor;
  fill:none;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  transition:transform .22s var(--ease);
}
.link-more:hover svg{transform:translateX(4px);}

/* ===== index list (分类页 2 主骨架) ===== */
.index-list{
  border-top:1px solid var(--line);
}
.index-row{
  display:grid;
  grid-template-columns:64px 1fr auto 30px;
  align-items:center;
  gap:24px;
  min-height:96px;
  padding:16px 18px;
  border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease),padding-left .22s var(--ease);
}
.index-row:hover{
  background:var(--paper-2);
  padding-left:26px;
}
.index-num{
  font-size:14px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--ink-300);
  transition:color .22s var(--ease);
}
.index-row:hover .index-num{color:var(--brand-ink);}
.index-body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.4;
  color:var(--ink-900);
}
.index-body p{
  margin-top:6px;
  font-size:15px;
  line-height:1.7;
  color:var(--ink-500);
}
.index-tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 11px;
  border-radius:999px;
  background:var(--paper-2);
  color:var(--ink-500);
  font-size:11px;
  font-weight:600;
  letter-spacing:.06em;
  white-space:nowrap;
}
.index-row:hover .index-tag{background:#fff;}
.index-arrow{
  display:grid;
  place-items:center;
  color:var(--ink-300);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.index-arrow svg{
  width:18px;height:18px;
  stroke:currentColor;
  fill:none;
  stroke-width:1.7;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.index-row:hover .index-arrow{transform:translateX(4px);color:var(--ink-900);}

/* ===== data band ===== */
.data-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.data-cell{
  padding:34px 24px;
  border-right:1px solid var(--line);
}
.data-cell:last-child{border-right:0;}
.data-num{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(34px,3.6vw,50px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--ink-900);
}
.data-cell:first-child .data-num{color:var(--brand-ink);}
.data-label{
  display:block;
  margin-top:14px;
  font-size:13px;
  line-height:1.7;
  color:var(--ink-500);
}

.dim-list{
  margin-top:40px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.dim-list span{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 13px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  color:var(--ink-500);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
}

/* ===== cards ===== */
.card-item{
  display:flex;
  flex-direction:column;
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--paper-2);
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.card-item:hover .card-media img{transform:scale(1.03);}
.card-tag{
  position:absolute;
  left:12px;top:12px;
  padding:4px 10px;
  border-radius:10px;
  background:rgba(251,250,247,.92);
  color:var(--ink-900);
  font-size:11px;
  font-weight:600;
  letter-spacing:.06em;
}
.card-body{
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
  padding:20px;
}
.card-body h3{
  font-size:18px;
  font-weight:600;
  line-height:1.4;
  color:var(--ink-900);
}
.card-body p{
  font-size:14px;
  line-height:1.7;
  color:var(--ink-500);
}
.card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-300);
}
.card-meta svg{
  width:15px;height:15px;
  stroke:var(--ink-500);
  fill:none;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
  transition:transform .22s var(--ease),stroke .22s var(--ease);
}
.card-item:hover .card-meta svg{transform:translateX(4px);stroke:var(--ink-900);}

/* ===== faq ===== */
.faq-wrap{max-width:900px;}
.faq-acc{border-top:1px solid var(--line);}
.faq-acc .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
}
.faq-acc .accordion-header{margin:0;}
.faq-acc .accordion-button{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:24px 0;
  background:transparent;
  border:0;
  box-shadow:none;
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink-900);
  text-align:left;
  transition:color .22s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed){
  background:transparent;
  color:var(--ink-900);
  box-shadow:none;
}
.faq-acc .accordion-button:hover{color:var(--brand-ink);}
.faq-acc .accordion-button::after{display:none;}
.faq-icon{
  position:relative;
  width:18px;height:18px;
  flex-shrink:0;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--ink-900);
  border-radius:2px;
}
.faq-icon::before{
  width:16px;height:1.5px;
  transform:translate(-50%,-50%);
}
.faq-icon::after{
  width:1.5px;height:16px;
  transform:translate(-50%,-50%);
  transition:transform .22s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed) .faq-icon::after{
  transform:translate(-50%,-50%) rotate(90deg);
}
.faq-acc .accordion-body{
  padding:0 40px 22px 0;
  font-size:15.5px;
  line-height:1.8;
  color:var(--ink-500);
}

/* ===== subscribe / cta ===== */
.subscribe-panel{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  padding:56px 48px;
  background:var(--ink-900);
  border-radius:var(--r-panel);
  color:#fff;
}
.subscribe-panel h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.015em;
  color:#fff;
}
.subscribe-panel p{
  margin-top:12px;
  font-size:15px;
  line-height:1.8;
  color:rgba(255,255,255,.7);
}
.subscribe-form label{
  display:block;
  margin-bottom:10px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  color:rgba(255,255,255,.72);
}
.subscribe-row{display:flex;gap:12px;}
.subscribe-row input{
  flex:1 1 auto;
  min-width:0;
  height:48px;
  padding:0 16px;
  border:1px solid rgba(255,255,255,.24);
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:15px;
  outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.subscribe-row input::placeholder{color:rgba(255,255,255,.42);}
.subscribe-row input:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(10,207,151,.28);
}
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  padding:0 26px;
  border:0;
  border-radius:var(--r-btn);
  background:var(--brand);
  color:var(--ink-900);
  font-size:15px;
  font-weight:800;
  white-space:nowrap;
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary:hover{background:#fff;color:var(--ink-900);transform:translateY(-1px);}
.form-note{
  display:inline-block;
  margin-top:14px;
  padding:10px 14px;
  border-radius:var(--r-btn);
  background:var(--brand-soft);
  color:var(--brand-ink);
  font-size:13px;
  font-weight:600;
}

/* ===== footer ===== */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding-top:72px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.site-footer .brand-text{color:#fff;font-size:18px;}
.site-footer .brand-mark{background:rgba(255,255,255,.1);}
.footer-col p{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
}
.footer-col h4{
  margin-bottom:18px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand);
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  position:relative;
  display:inline-block;
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .22s var(--ease);
}
.footer-col ul a::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:100%;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.footer-col ul a:hover{color:#fff;}
.footer-col ul a:hover::after{transform:scaleX(1);}
.social-row{
  display:flex;
  gap:10px;
  margin-top:22px;
}
.social-row a{
  width:36px;height:36px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:10px;
  display:grid;place-items:center;
  transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.social-row svg{
  width:16px;height:16px;
  stroke:rgba(255,255,255,.72);
  fill:none;
  stroke-width:1.6;
  stroke-linecap:round;
  stroke-linejoin:round;
  transition:stroke .22s var(--ease);
}
.social-row a:hover{border-color:var(--brand);background:rgba(10,207,151,.08);}
.social-row a:hover svg{stroke:var(--brand);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:56px;
  padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:rgba(255,255,255,.72);
  transition:color .22s var(--ease);
}
.to-top svg{
  width:14px;height:14px;
  stroke:currentColor;
  fill:none;
  stroke-width:1.6;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.to-top:hover{color:var(--brand);}

/* ===== reveal ===== */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

/* ===== responsive ===== */
@media (max-width:1199.98px){
  .container{max-width:1140px;}
  .nav-search{max-width:240px;}
  .nav-link-item{padding:8px 7px;font-size:13px;}
  .nav-link-item::after{left:7px;right:7px;}
  .btn-ink{height:36px;padding:0 14px;font-size:13px;margin-left:6px;}
}

@media (max-width:991.98px){
  :root{--sec:72px;}
  .container{max-width:960px;}
  .only-mobile{display:grid;}
  .desktop-only{display:none !important;}
  .header-inner{height:60px;gap:12px;}
  .brand-text{font-size:16px;}
  .brand-mark{width:23px;height:23px;border-radius:7px;}
  .brand-mark span{width:9px;height:9px;}
  .page-hero-inner{padding-top:32px;padding-bottom:32px;gap:20px;}
  .page-hero-index{font-size:20px;}
  .index-row{grid-template-columns:48px 1fr auto 24px;gap:16px;}
  .data-band{grid-template-columns:repeat(2,1fr);}
  .data-cell:nth-child(2){border-right:0;}
  .data-cell:nth-child(1),
  .data-cell:nth-child(2){border-bottom:1px solid var(--line);}
  .subscribe-panel{grid-template-columns:1fr;gap:28px;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}

@media (max-width:767.98px){
  :root{--sec:56px;}
  .container{padding-left:20px;padding-right:20px;}
  body{font-size:15.5px;}
  .section-head{margin-bottom:32px;}
  .section-head-row{margin-bottom:32px;}
  .ghost-no{display:none;}
  .page-hero{min-height:280px;}
  .page-hero-foot{flex-direction:column;align-items:flex-start;gap:14px;}
  .page-hero-index{font-size:16px;padding-bottom:0;}
  .index-row{
    grid-template-columns:40px 1fr;
    grid-template-areas:
      "num title"
      ". desc"
      ". tag";
    gap:8px 12px;
    min-height:0;
    padding:20px 12px;
  }
  .index-num{grid-area:num;padding-top:3px;}
  .index-body{grid-area:title;}
  .index-body p{grid-area:desc;}
  .index-tag{grid-area:tag;justify-self:start;margin-top:6px;}
  .index-arrow{display:none;}
  .index-row:hover{padding-left:12px;}
  .card-meta{font-size:11px;}
  .faq-acc .accordion-button{font-size:16px;padding:20px 0;}
  .faq-acc .accordion-body{padding-right:0;}
  .subscribe-panel{padding:32px 22px;border-radius:16px;}
  .subscribe-row{flex-direction:column;}
  .subscribe-row .btn-primary{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .data-band{grid-template-columns:1fr;}
  .data-cell{border-right:0;border-bottom:1px solid var(--line);padding:26px 18px;}
  .data-cell:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-text{font-size:15px;}
  .nav-search{gap:6px;padding-left:12px;}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --brand:#0ACF97;
  --brand-ink:#069B72;
  --brand-soft:#E6FAF4;
  --accent:#F2603C;
  --ink-900:#0F1216;
  --ink-700:#14181D;
  --ink-500:#5C646E;
  --ink-300:#9AA1AA;
  --paper:#FBFAF7;
  --paper-2:#F2EFE9;
  --line:#E4E0D8;
  --radius-card:14px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,18,22,.04);
  --shadow-2:0 12px 32px rgba(15,18,22,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--ink-700);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);letter-spacing:-.01em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* 容器 */
.container,.container-fluid{width:100%;margin:0 auto;padding-left:24px;padding-right:24px;}
.container{max-width:1200px;}
@media (min-width:1200px){.container{max-width:1200px;}}
@media (min-width:1400px){.container{max-width:1200px;}}
@media (max-width:991.98px){.container{padding-left:20px;padding-right:20px;}}
@media (max-width:575.98px){.container{padding-left:16px;padding-right:16px;}}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(251,250,247,.86);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:var(--paper);box-shadow:0 1px 2px rgba(15,18,22,.06);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;position:relative;}
.brand{display:flex;align-items:center;gap:9px;flex:0 0 auto;}
.brand-mark{
  width:22px;height:22px;border-radius:7px;background:var(--ink-900);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark span{width:8px;height:8px;border-radius:50%;background:var(--brand);display:block;}
.brand-text{font-size:19px;font-weight:800;color:var(--ink-900);letter-spacing:-.02em;white-space:nowrap;}
.nav-search{
  flex:1 1 auto;max-width:560px;margin:0 auto;position:relative;
  display:flex;align-items:center;gap:8px;
  height:48px;padding:0 8px 0 16px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}
.nav-search svg{width:18px;height:18px;flex:0 0 auto;stroke:var(--ink-500);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.nav-search input{
  flex:1 1 auto;border:0;background:transparent;height:100%;color:var(--ink-900);
  font-size:14.5px;outline:none;min-width:0;
}
.nav-search input::placeholder{color:var(--ink-300);transition:opacity .15s var(--ease);}
.nav-search input:focus::placeholder{opacity:0;}
.search-btn{
  height:32px;padding:0 14px;border:0;border-radius:999px;
  background:var(--ink-900);color:#fff;font-size:13px;font-weight:600;
  cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease);
}
.search-btn:hover{background:var(--brand);color:var(--ink-900);}
.nav-menu{display:flex;align-items:center;gap:22px;flex:0 0 auto;}
.nav-link-item{
  position:relative;font-size:14px;font-weight:600;color:var(--ink-500);
  padding:6px 0;white-space:nowrap;transition:color .2s var(--ease);
}
.nav-link-item::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);transition:width .24s var(--ease);
}
.nav-link-item:hover{color:var(--ink-900);}
.nav-link-item:hover::after{width:100%;}
.nav-link-item.is-active{color:var(--ink-900);}
.nav-link-item.is-active::after{width:100%;}
.btn-ink{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border:0;border-radius:var(--radius-btn);
  background:var(--ink-900);color:#fff;font-size:14px;font-weight:700;
  cursor:pointer;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-ink:hover{background:var(--brand);color:var(--ink-900);transform:translateY(-1px);}
.icon-btn{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.icon-btn svg{width:19px;height:19px;stroke:var(--ink-900);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.mobile-search{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:var(--paper);border-bottom:1px solid var(--line);
  padding:12px 16px;box-shadow:0 8px 20px rgba(15,18,22,.06);
}
.mobile-search.is-open{display:block;}
.mobile-search .nav-search{max-width:none;margin:0;}

/* 抽屉 */
.nav-drawer{background:var(--paper);width:min(340px,86vw);}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.nav-drawer .offcanvas-title{font-size:16px;font-weight:800;}
.nav-drawer .offcanvas-body{padding:0;}
.drawer-list li{border-bottom:1px solid var(--line);}
.drawer-list a{display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:52px;font-size:16px;color:var(--ink-700);}
.drawer-list a.is-active{color:var(--ink-900);font-weight:700;}
.drawer-list a span.arrow{color:var(--ink-300);}
.drawer-search{padding:16px 20px;border-bottom:1px solid var(--line);}

/* 面包屑 */
.breadcrumb-row{
  display:flex;align-items:center;gap:8px;
  font-size:12px;color:var(--ink-300);letter-spacing:.02em;
}
.breadcrumb-row a{color:var(--ink-300);transition:color .2s var(--ease);}
.breadcrumb-row a:hover{color:var(--ink-900);}
.breadcrumb-row .sep{color:var(--ink-300);}
.breadcrumb-row .current{color:var(--ink-700);}

/* 分类头部 */
.cat-hero{
  position:relative;overflow:hidden;border-radius:var(--radius-panel);
  margin-top:24px;min-height:360px;display:flex;flex-direction:column;justify-content:flex-end;
  padding:36px 40px;
}
.cat-hero-media{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.cat-hero-media::after{content:"";position:absolute;inset:0;background:rgba(251,250,247,.78);}
.cat-hero-content{position:relative;z-index:2;max-width:720px;}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,44px);font-weight:700;line-height:1.2;
  margin:20px 0 12px;
}
.cat-hero-lead{font-size:16px;line-height:1.8;color:var(--ink-500);max-width:620px;margin:0;}
.cat-hero-index{
  position:absolute;right:40px;bottom:32px;z-index:2;
  font-size:12px;letter-spacing:.14em;color:var(--ink-500);
}
@media (max-width:991.98px){
  .cat-hero{min-height:320px;padding:28px 24px;}
  .cat-hero-index{right:24px;bottom:24px;}
}
@media (max-width:575.98px){
  .cat-hero{padding:24px 18px;}
  .cat-hero-index{position:static;margin-top:18px;}
}

/* 区块 */
.section{position:relative;padding:96px 0;}
@media (max-width:991.98px){.section{padding:72px 0;}}
@media (max-width:767.98px){.section{padding:56px 0;}}
.section-index{
  position:absolute;top:52px;right:24px;font-size:120px;line-height:1;font-weight:700;
  color:var(--ink-900);opacity:.05;pointer-events:none;user-select:none;
}
@media (max-width:1199.98px){.section-index{display:none;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.25;margin-bottom:12px;}
.section-lead{font-size:16.5px;line-height:1.8;color:var(--ink-500);margin:0;}

/* 按钮 */
.btn-primary-lg{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:0;border-radius:var(--radius-btn);
  background:var(--ink-900);color:#fff;font-size:15px;font-weight:800;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary-lg:hover{background:var(--brand);color:var(--ink-900);transform:translateY(-1px);}
.btn-outline-ink{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:1.5px solid var(--ink-900);border-radius:var(--radius-btn);
  background:transparent;color:var(--ink-900);font-size:15px;font-weight:700;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.btn-outline-ink:hover{background:var(--ink-900);color:#fff;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--ink-900);position:relative;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:100%;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* 卡片 */
.content-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.content-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.card-media{display:block;position:relative;overflow:hidden;background:var(--paper-2);aspect-ratio:16/10;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.content-card:hover .card-media img{transform:scale(1.03);}
.cat-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  height:26px;display:inline-flex;align-items:center;padding:0 10px;border-radius:10px;
  background:rgba(251,250,247,.88);color:var(--ink-900);
  font-size:11px;font-weight:600;letter-spacing:.06em;
}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-body h3{font-size:19px;font-weight:600;line-height:1.4;}
.card-body h3 a{transition:color .2s var(--ease);}
.card-body h3 a:hover{color:var(--brand-ink);}
.card-body p{font-size:14px;line-height:1.75;color:var(--ink-500);margin:0;}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--ink-300);letter-spacing:.06em;
}
.card-arrow{font-family:var(--font-mono);color:var(--ink-900);transition:transform .22s var(--ease);}
.content-card:hover .card-arrow{transform:translateX(4px);}

/* 马赛克区块 */
.mosaic{gap:24px 24px;}
.card-large .card-media{aspect-ratio:16/9;}
.card-large .card-body h3{font-size:24px;}
.card-large .card-body p{font-size:15px;}
.stack-col{display:grid;grid-template-rows:1fr 1fr;gap:24px;height:100%;}
.stack-col .content-card .card-media{aspect-ratio:16/9;}
.wide-card{flex-direction:row;}
.wide-card .card-media{aspect-ratio:auto;width:42%;min-height:100%;border-radius:var(--radius-card) 0 0 var(--radius-card);}
.wide-card .card-body{padding:30px 32px;}
.wide-card .card-body h3{font-size:22px;}
@media (max-width:991.98px){
  .stack-col{grid-template-rows:auto;gap:24px;}
  .wide-card{flex-direction:column;}
  .wide-card .card-media{width:100%;aspect-ratio:16/10;border-radius:var(--radius-card) var(--radius-card) 0 0;}
}

/* 步骤时间线 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);position:relative;margin-top:48px;}
.steps::before{content:"";position:absolute;left:0;right:0;top:9px;height:1px;background:var(--line);}
.step{position:relative;padding:34px 28px 0 0;}
.step::before{
  content:"";position:absolute;top:3px;left:0;width:13px;height:13px;border-radius:50%;
  background:var(--paper);border:2px solid var(--brand);
}
.step-num{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--ink-300);margin-bottom:8px;}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.8;color:var(--ink-500);margin:0;}
@media (max-width:991.98px){
  .steps{grid-template-columns:repeat(2,1fr);row-gap:34px;}
  .steps::before{display:none;}
}
@media (max-width:575.98px){.steps{grid-template-columns:1fr;}}

/* 清单面板 */
.check-panel{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:46px;display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start;
}
.check-panel h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;margin-bottom:14px;}
.check-panel .panel-lead{font-size:15.5px;color:var(--ink-500);margin:0 0 20px;}
.check-list li{
  position:relative;padding:0 0 0 22px;margin-bottom:18px;
  font-size:15.5px;line-height:1.8;color:var(--ink-700);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:12px;width:12px;height:2px;background:var(--brand);
}
.check-list li strong{color:var(--ink-900);font-weight:700;}
.check-list li:last-child{margin-bottom:0;}
@media (max-width:991.98px){.check-panel{grid-template-columns:1fr;padding:32px;gap:28px;}}

/* FAQ */
.faq-wrap{max-width:860px;}
.faq-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.faq-accordion .accordion-button{
  position:relative;background:transparent;border:0;box-shadow:none;
  padding:24px 48px 24px 0;font-size:17px;font-weight:600;color:var(--ink-900);
  line-height:1.5;border-radius:0;
}
.faq-accordion .accordion-button:not(.collapsed){background:transparent;color:var(--ink-900);box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;border:0;}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;right:8px;top:50%;width:14px;height:1.5px;
  background:var(--ink-900);transform:translateY(-50%);
}
.faq-accordion .accordion-button::after{
  content:"";position:absolute;right:14.25px;top:50%;width:1.5px;height:14px;
  background:var(--ink-900);background-image:none;
  transform:translateY(-50%) rotate(0deg);
  transition:transform .22s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(90deg);}
.faq-accordion .accordion-body{padding:0 48px 22px 0;color:var(--ink-500);font-size:15.5px;line-height:1.85;}

/* CTA 条 */
.cta-section{padding:0 0 96px;}
@media (max-width:991.98px){.cta-section{padding-bottom:72px;}}
@media (max-width:767.98px){.cta-section{padding-bottom:56px;}}
.cta-panel{
  background:var(--ink-900);border-radius:var(--radius-panel);
  padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-panel h2{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;margin-bottom:10px;}
.cta-panel p{color:rgba(255,255,255,.68);font-size:15.5px;margin:0;max-width:560px;}
.cta-panel .btn-primary-lg{background:var(--brand);color:var(--ink-900);flex:0 0 auto;}
.cta-panel .btn-primary-lg:hover{background:#fff;color:var(--ink-900);}
@media (max-width:991.98px){.cta-panel{flex-direction:column;align-items:flex-start;padding:40px 32px;}}

/* 页脚 */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding-top:72px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:800;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:0 0 16px;}
.footer-col h4{
  font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.08em;
  margin-bottom:18px;text-transform:none;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  position:relative;font-size:14px;color:rgba(255,255,255,.72);
  transition:color .2s var(--ease);
}
.footer-col ul a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;
  background:var(--brand);transition:width .24s var(--ease);
}
.footer-col ul a:hover{color:#fff;}
.footer-col ul a:hover::after{width:100%;}
.social-row{display:flex;gap:10px;}
.social-row a{
  width:36px;height:36px;border:1px solid rgba(255,255,255,.12);border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.social-row a svg{width:17px;height:17px;stroke:rgba(255,255,255,.72);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.social-row a:hover{border-color:var(--brand);background:rgba(10,207,151,.1);}
.social-row a:hover svg{stroke:var(--brand);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);font-size:13px;}
.to-top svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.to-top:hover{color:#fff;}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* 响应式导航 */
@media (max-width:1199.98px){
  .nav-menu{gap:16px;}
  .nav-link-item{font-size:13.5px;}
}
@media (max-width:991.98px){
  .header-inner{height:60px;gap:12px;}
  .nav-menu{display:none;}
  .nav-search{display:none;}
  .icon-btn{display:inline-flex;}
  .brand-text{font-size:16.5px;}
  .mobile-search .nav-search{display:flex;}
}

/* 入场动画 */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.js .reveal.is-visible{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  .js .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}
@media (hover:none){
  .content-card:hover{transform:none;box-shadow:var(--shadow-1);}
  .content-card:active{transform:scale(.99);}
}

/* roulang page: category4 */
:root{
  --brand:#0ACF97;
  --brand-ink:#069B72;
  --brand-soft:#E6FAF4;
  --accent:#F2603C;
  --ink-900:#0F1216;
  --ink-700:#14181D;
  --ink-500:#5C646E;
  --ink-300:#9AA1AA;
  --paper:#FBFAF7;
  --paper-2:#F2EFE9;
  --line:#E4E0D8;
  --line-dark:rgba(255,255,255,.12);
  --radius-s:10px;
  --radius-m:14px;
  --radius-l:20px;
  --shadow-1:0 1px 2px rgba(15,18,22,.04);
  --shadow-2:0 12px 32px rgba(15,18,22,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --sec-space:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;}
svg{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{
  width:100%;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
  max-width:1200px;
}
@media (min-width:1200px){.container{max-width:1200px;}}
@media (min-width:1400px){.container{max-width:1240px;}}
@media (max-width:767.98px){.container{padding-left:16px;padding-right:16px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(251,250,247,.95);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:var(--paper);box-shadow:0 1px 2px rgba(15,18,22,.07);}
.header-inner{display:flex;align-items:center;gap:26px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900);}
.brand-mark{
  width:26px;height:26px;border-radius:8px;background:var(--ink-900);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark span{width:10px;height:10px;border-radius:3px;background:var(--brand);display:block;}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.nav-search{
  position:relative;
  flex:1 1 240px;
  max-width:440px;
  margin:0 auto;
  display:flex;
  align-items:center;
  height:48px;
  padding:0 6px 0 18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}
.nav-search svg{width:18px;height:18px;color:var(--ink-500);flex:0 0 auto;}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;padding:0 12px;
  border:0;background:transparent;font-size:15px;color:var(--ink-700);outline:none;
}
.nav-search input::placeholder{color:var(--ink-300);transition:opacity .15s linear;}
.nav-search input:focus::placeholder{opacity:.4;}
.search-btn{
  height:36px;padding:0 18px;border-radius:999px;background:var(--ink-900);color:#fff;
  font-size:13px;font-weight:700;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.search-btn:hover{background:var(--brand);color:var(--ink-900);}
.nav-menu{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav-link-item{
  position:relative;padding:6px 0;font-size:13.5px;font-weight:600;color:var(--ink-500);
  white-space:nowrap;transition:color .2s var(--ease);
}
.nav-link-item::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width .24s var(--ease);
}
.nav-link-item:hover{color:var(--ink-900);}
.nav-link-item:hover::after{width:100%;}
.nav-link-item.is-active{color:var(--ink-900);}
.nav-link-item.is-active::after{width:100%;}
.btn-ink{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:var(--radius-s);
  background:var(--ink-900);color:#fff;font-size:14px;font-weight:700;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-ink:hover{background:var(--brand);color:var(--ink-900);transform:translateY(-1px);}
.icon-btn{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius-s);color:var(--ink-900);flex:0 0 auto;
  transition:background .2s var(--ease);
}
.icon-btn:hover{background:var(--paper-2);}
.icon-btn svg{width:20px;height:20px;}
.mobile-search{display:none;}
@media (max-width:1199.98px){
  .nav-search{display:none;}
  .search-toggle{display:inline-flex;}
  .mobile-search{position:absolute;top:100%;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 16px;}
  .mobile-search.is-open{display:block;}
  .mobile-search input{
    width:100%;height:46px;border-radius:999px;border:1px solid var(--line);
    padding:0 18px;font-size:15px;background:#fff;outline:none;
  }
  .mobile-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}
}
@media (min-width:1200px){.search-toggle{display:none;}}
@media (max-width:991.98px){
  .nav-menu{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{height:60px;gap:12px;}
  .brand-text{font-size:16px;}
  .brand{margin-right:auto;}
}
.site-drawer{width:min(86vw,360px);background:var(--paper);}
.site-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.site-drawer .offcanvas-header .brand-text{font-size:16px;}
.site-drawer .offcanvas-body{padding:0;}
.drawer-search{padding:16px 20px;border-bottom:1px solid var(--line);}
.drawer-search input{
  width:100%;height:44px;border-radius:999px;border:1px solid var(--line);
  padding:0 16px;font-size:15px;background:#fff;outline:none;
}
.drawer-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 20px;font-size:16px;font-weight:600;color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-ink);}
.drawer-nav a span{font-family:var(--font-mono);font-size:12px;color:var(--ink-300);}
.drawer-cta{padding:20px;}

/* ---------- 分类页头 ---------- */
.cat-hero{position:relative;overflow:hidden;}
.cat-hero-bg{position:absolute;inset:0;}
.cat-hero-bg img{width:100%;height:100%;object-fit:cover;}
.cat-hero-bg::after{content:"";position:absolute;inset:0;background:rgba(251,250,247,.8);}
.cat-hero-inner{
  position:relative;z-index:2;min-height:360px;padding-top:26px;padding-bottom:48px;
  display:flex;flex-direction:column;justify-content:space-between;
}
.breadcrumb-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--ink-300);}
.breadcrumb-row a:hover{color:var(--ink-900);}
.breadcrumb-row .current{color:var(--ink-700);}
.cat-hero-body{max-width:780px;margin-top:28px;}
.pill{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-ink);font-size:11px;font-weight:700;letter-spacing:.06em;
}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,44px);font-weight:700;line-height:1.2;
  letter-spacing:-.01em;color:var(--ink-900);margin:18px 0 14px;
}
.cat-hero .lead{font-size:16px;line-height:1.8;color:var(--ink-500);max-width:580px;}
.cat-index{
  position:absolute;right:24px;bottom:36px;z-index:2;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.16em;color:var(--ink-300);
}
@media (max-width:767.98px){
  .cat-hero-inner{min-height:300px;padding-bottom:36px;}
  .cat-index{display:none;}
}

/* ---------- 区块通用 ---------- */
.section{position:relative;padding:var(--sec-space) 0;}
.section-tight{padding-top:0;}
.section-band{background:var(--paper-2);}
@media (max-width:991.98px){.section{padding:72px 0;}}
@media (max-width:767.98px){.section{padding:56px 0;}}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:40px;position:relative;z-index:2;
}
.sec-head h2{font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.25;color:var(--ink-900);margin-top:12px;}
.sec-note{font-size:15px;line-height:1.8;color:var(--ink-500);max-width:340px;}
@media (max-width:767.98px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .sec-note{max-width:none;}
}
.sec-label{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--brand);text-transform:uppercase;
}
.sec-label::after{content:"";width:28px;height:1px;background:var(--brand);display:block;}
.ghost-num{
  position:absolute;top:56px;right:24px;font-family:var(--font-mono);font-weight:700;
  font-size:120px;line-height:1;color:var(--ink-900);opacity:.05;pointer-events:none;user-select:none;
}
@media (max-width:991.98px){.ghost-num{display:none;}}

/* ---------- 对照区 ---------- */
.compare{
  display:grid;grid-template-columns:minmax(220px,290px) 1fr;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  position:relative;z-index:2;
}
.compare-tabs{display:flex;flex-direction:column;border-right:1px solid var(--line);padding:8px 0;}
.compare-tabs-title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--ink-300);
  padding:12px 20px 10px;
}
.compare-tab{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  width:100%;text-align:left;padding:16px 20px;font-size:15px;font-weight:600;
  color:var(--ink-500);border-left:2px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.compare-tab span{font-family:var(--font-mono);font-size:11px;color:var(--ink-300);}
.compare-tab:hover{background:var(--paper-2);color:var(--ink-900);}
.compare-tab.is-active{background:var(--paper-2);color:var(--ink-900);border-left-color:var(--brand);}
.compare-panes{padding:8px 0 8px 40px;}
.compare-pane{display:none;}
.compare-pane.is-active{display:block;}
.compare-row{display:flex;align-items:flex-start;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);}
.compare-row:last-child{border-bottom:0;}
.compare-row h3{font-size:17px;font-weight:600;line-height:1.4;color:var(--ink-900);}
.compare-row p{font-size:14.5px;line-height:1.8;color:var(--ink-500);margin-top:6px;max-width:640px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-ink);font-size:11px;letter-spacing:.06em;
  white-space:nowrap;flex:0 0 auto;margin-top:4px;
}
.tag.is-neutral{background:var(--paper-2);color:var(--ink-500);}
.compare-row .tag{margin-left:auto;}
@media (max-width:767.98px){
  .compare{grid-template-columns:1fr;}
  .compare-tabs{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);padding:0;}
  .compare-tabs-title{display:none;}
  .compare-tab{
    width:auto;white-space:nowrap;border-left:0;border-bottom:2px solid transparent;
    padding:14px 16px;font-size:14px;
  }
  .compare-tab.is-active{border-left:0;border-bottom-color:var(--brand);}
  .compare-panes{padding:4px 0;}
  .compare-row{flex-direction:column;gap:10px;}
  .compare-row .tag{margin-left:0;}
}

/* ---------- 数据带 ---------- */
.data-band{display:grid;grid-template-columns:repeat(4,1fr);position:relative;z-index:2;}
.data-cell{padding:10px 26px;border-left:1px solid var(--line);}
.data-cell:first-child{border-left:0;padding-left:0;}
.data-cell .num{
  font-family:var(--font-mono);font-size:clamp(34px,4vw,50px);font-weight:700;
  line-height:1.05;letter-spacing:-.02em;color:var(--brand-ink);
}
.data-cell .num small{font-size:15px;font-weight:600;color:var(--ink-500);margin-left:6px;letter-spacing:0;}
.data-cell p{font-size:13px;color:var(--ink-500);margin-top:10px;line-height:1.7;}
@media (max-width:767.98px){
  .data-band{grid-template-columns:repeat(2,1fr);}
  .data-cell{padding:18px 0;border-left:0;border-top:1px solid var(--line);}
  .data-cell:nth-child(odd){padding-right:16px;}
  .data-cell:nth-child(even){padding-left:16px;border-left:1px solid var(--line);}
  .data-cell:nth-child(1),.data-cell:nth-child(2){border-top:0;}
}

/* ---------- 内容卡 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:991.98px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:767.98px){.card-grid{grid-template-columns:1fr;}}
.content-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-m);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.content-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.content-card:hover .card-media img{transform:scale(1.03);}
.card-tag{
  position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;height:24px;
  padding:0 10px;border-radius:var(--radius-s);background:rgba(251,250,247,.92);
  color:var(--ink-900);font-size:11px;letter-spacing:.06em;
}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:18px;font-weight:600;line-height:1.4;color:var(--ink-900);}
.card-body p{font-size:14px;line-height:1.75;color:var(--ink-500);margin-top:8px;}
.card-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-family:var(--font-mono);font-size:12px;color:var(--ink-300);letter-spacing:.04em;
}
.card-meta .arrow{color:var(--ink-900);transition:transform .22s var(--ease);}
.content-card:hover .card-meta .arrow{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.faq-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-accordion .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;
  padding:22px 48px 22px 0;font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--ink-900);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px;}
.faq-accordion .accordion-button::after{
  content:"";width:16px;height:16px;margin-left:auto;
  background:
    linear-gradient(var(--ink-900),var(--ink-900)) center/16px 1.5px no-repeat,
    linear-gradient(var(--ink-900),var(--ink-900)) center/1.5px 16px no-repeat;
  transition:transform .22s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(90deg);}
.faq-accordion .accordion-body{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--ink-500);max-width:800px;}

/* ---------- CTA ---------- */
.section-cta{padding-bottom:var(--sec-space);}
.cta-panel{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  background:var(--ink-900);border-radius:var(--radius-l);padding:56px;color:#fff;
}
.cta-panel h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;color:#fff;}
.cta-panel p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.7);margin-top:12px;max-width:560px;}
.btn-brand{
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 26px;
  border-radius:var(--radius-s);background:var(--brand);color:var(--ink-900);
  font-size:15px;font-weight:800;white-space:nowrap;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.btn-brand:hover{background:#fff;transform:translateY(-1px);}
.btn-brand svg{width:18px;height:18px;}
@media (max-width:767.98px){
  .cta-panel{flex-direction:column;align-items:flex-start;padding:32px 24px;gap:24px;}
  .btn-brand{width:100%;justify-content:center;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px;}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);margin-bottom:18px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col a{
  font-size:14px;color:rgba(255,255,255,.72);border-bottom:2px solid transparent;
  padding-bottom:2px;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-col a:hover{color:#fff;border-bottom-color:var(--brand);}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);}
.footer-brand .brand-text{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.01em;}
.social-row{display:flex;gap:12px;margin-top:20px;}
.social-row a{
  width:38px;height:38px;border-radius:var(--radius-s);border:1px solid var(--line-dark);
  display:inline-flex;align-items:center;justify-content:center;color:rgba(255,255,255,.72);
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.social-row a svg{width:18px;height:18px;}
.social-row a:hover{background:var(--brand);border-color:var(--brand);color:var(--ink-900);}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);transition:color .2s var(--ease);}
.to-top:hover{color:#fff;}
.to-top svg{width:16px;height:16px;}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:767.98px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}