:root{
  --bg:#F3FBFA;--deep-bg:#E4F4F1;--card:#FFFFFF;--sub-bg:#D4EFEC;--ink:#0D2E2B;--text:#163834;
  --muted:#4A706C;--aux:#6A8E89;--brand:#0E9A88;--bright:#1EC8B6;--deep:#0A6B5E;--pale:#F7FFFE;
  --line:rgba(14,154,136,.16);--line-strong:rgba(14,154,136,.42);--shadow:0 12px 28px rgba(10,107,94,.08);
  --grad:linear-gradient(135deg,#1EC8B6 0%,#0E9A88 55%,#0A6B5E 100%);
}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}.is-locked{overflow:hidden}
a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.topline{position:fixed;z-index:80;top:0;left:0;right:0;height:22px;background:var(--deep);color:#fff;font-size:12px}.topline-inner,.curtain-inner,.mirror-inner,.footer-inner,.page-wrap{width:min(1120px,calc(100% - 32px));margin:0 auto}.topline-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.top-search-btn{height:22px;padding:0 6px;border:0;background:transparent;color:#fff}.curtain-bar{position:fixed;z-index:79;top:22px;left:0;right:0;height:60px;background:#fff;border-bottom:1px solid var(--line)}.curtain-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand-link{justify-self:start;min-height:44px;display:flex;align-items:center}.brand-logo,.footer-logo,.drawer-brand img{height:28px;width:auto;max-width:150px;object-fit:contain;object-position:center}.brand-text{font-weight:800;font-size:16px;color:var(--deep)}.drawer-toggle{min-width:84px;height:44px;border:1px solid var(--line-strong);border-radius:999px;background:var(--pale);color:var(--deep);font-weight:700}.app-link{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 15px;border-radius:999px;background:var(--grad);color:#fff;font-size:14px;font-weight:700}.mirror-tabs{position:fixed;z-index:78;top:82px;left:0;right:0;height:40px;background:var(--pale);border-bottom:1px solid var(--line)}.mirror-inner{height:40px;display:flex;justify-content:center;align-items:center;gap:8px}.mirror-inner a{height:30px;min-width:96px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;color:var(--deep);font-size:13px}.mirror-inner a.active{background:var(--brand);color:#fff}.site-main{padding-top:122px;min-height:70vh}.page-wrap{padding:34px 0 58px}.page-head{margin-bottom:26px;padding:26px;border:1px solid var(--line);background:linear-gradient(180deg,#fff,var(--pale));border-radius:14px;box-shadow:var(--shadow)}.eyebrow{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;margin-bottom:9px;border-radius:999px;background:var(--deep-bg);color:var(--deep);font-size:12px;font-weight:700}.page-head h1,.hero-copy h1{margin:0;color:var(--ink);font-size:24px;line-height:1.3}.page-head p,.hero-copy p{margin:10px 0 0;color:var(--muted)}h2{font-size:20px;line-height:1.35;color:var(--ink);margin:0 0 10px}h3{font-size:16px;line-height:1.4;color:var(--ink);margin:0 0 7px}p{margin:0 0 12px}.section{margin-top:26px}.section-title{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:14px}.section-title p{margin:0;color:var(--aux);font-size:13px}.grid-2,.grid-3,.grid-4{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow);min-width:0}.card p:last-child{margin-bottom:0}.soft-card{background:var(--pale)}.mint-card{background:var(--deep-bg)}.teal-card{background:var(--deep);color:#fff;border-color:transparent}.teal-card h2,.teal-card h3,.teal-card p,.teal-card a{color:#fff}.media-slot{margin:0;background:var(--pale);border:1px solid var(--line);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:150px}.media-slot img{display:block;max-width:100%;max-height:100%;width:100%;height:100%;object-fit:contain;object-position:center}.media-180{height:180px}.media-200{height:200px}.media-260{height:260px}.media-app{height:360px;max-height:360px}.hero{padding-top:22px}.hero-media{height:260px}.hero-copy{padding:22px 0 4px;text-align:left}.hero-copy .lead{max-width:850px}.action-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:999px;font-size:14px;font-weight:700;white-space:nowrap;border:1px solid transparent}.btn-primary{background:var(--grad);color:#fff}.btn-secondary{background:#fff;color:var(--deep);border-color:var(--line-strong)}.btn:hover,.drawer-toggle:hover,.app-link:hover{transform:translateY(-1px)}a:focus-visible,button:focus-visible{outline:3px solid rgba(30,200,182,.35);outline-offset:2px}.number-list,.shelf-list,.lesson-list,.legal-list,.help-list{display:grid;gap:10px}.number-row,.shelf-row,.lesson-row,.legal-row,.help-row{display:grid;grid-template-columns:58px 1fr;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}.number-row:last-child,.shelf-row:last-child,.lesson-row:last-child,.legal-row:last-child,.help-row:last-child{border-bottom:0}.num{font-weight:800;font-size:22px;line-height:1;color:var(--brand);letter-spacing:.04em}.tag{display:inline-flex;align-items:center;min-height:26px;padding:0 9px;border-radius:999px;background:var(--deep-bg);color:var(--deep);font-size:12px;font-weight:700}.tag-status{background:var(--sub-bg)}.timeline{position:relative;padding-left:22px}.timeline:before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:var(--line-strong)}.timeline-item{position:relative;padding:0 0 18px 18px}.timeline-item:before{content:"";position:absolute;left:-21px;top:7px;width:10px;height:10px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px var(--deep-bg)}.timeline-item:last-child{padding-bottom:0}.quote-note{padding:18px;border-left:4px solid var(--brand);background:#fff;border-radius:0 12px 12px 0}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}.faq-item h2{font-size:16px}.faq-item p{margin:0;color:var(--muted)}.index-split{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(260px,.75fr);gap:18px;align-items:stretch}.app-feature{display:grid;grid-template-columns:310px 1fr;gap:18px;align-items:center}.icon-card{display:flex;gap:14px;align-items:center}.icon-card .icon-slot{width:64px;height:64px;flex:0 0 64px}.icon-slot img{width:48px;height:48px;object-fit:contain}.site-footer{background:var(--deep);color:#D4EFEC;border-top:1px solid rgba(247,255,254,.35);padding:34px 0 28px;font-size:13px}.footer-brand{display:flex;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px solid rgba(247,255,254,.18)}.footer-brand div{display:flex;flex-direction:column}.footer-brand strong{color:#fff;font-size:16px}.footer-brand span{color:#D4EFEC}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;padding:22px 0}.footer-grid section{display:flex;flex-direction:column;gap:6px}.footer-grid h2{font-size:13px;color:#fff;margin:0 0 4px}.footer-grid a{color:#D4EFEC}.footer-grid a:hover{color:#fff}.footer-note{max-width:860px;color:#D4EFEC}.footer-copy{margin:12px 0 0;color:#D4EFEC}.ui-overlay{position:fixed;z-index:90;inset:0;background:rgba(4,42,38,.44);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.ui-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.drawer-panel{position:fixed;z-index:92;left:50%;bottom:0;width:min(720px,calc(100% - 24px));max-height:70vh;transform:translate(-50%,105%);background:#fff;border:1px solid var(--line-strong);border-radius:18px 18px 0 0;box-shadow:0 -18px 44px rgba(10,107,94,.18);visibility:hidden;pointer-events:none;transition:.24s ease}.drawer-panel.is-open{transform:translate(-50%,0);visibility:visible;pointer-events:auto}.drawer-head{height:62px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--deep)}.icon-close{min-width:64px;height:40px;border-radius:999px;border:1px solid var(--line-strong);background:#fff;color:var(--deep);font-weight:700}.drawer-scroll{max-height:calc(70vh - 62px);overflow:auto;padding:16px 18px 24px}.drawer-group{display:grid;grid-template-columns:110px 1fr;gap:10px 14px;padding:12px 0;border-bottom:1px solid var(--line)}.drawer-group:last-child{border-bottom:0}.drawer-group h2{grid-row:1 / span 20;font-size:14px;color:var(--deep);padding-top:10px}.drawer-group a{display:grid;grid-template-columns:120px 1fr;gap:8px;padding:9px 10px;border-radius:10px}.drawer-group a:hover{background:var(--pale)}.drawer-group strong{color:var(--ink);font-size:14px}.drawer-group span{color:var(--muted);font-size:13px}.search-layer{position:fixed;z-index:93;top:82px;left:0;right:0;opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto}.search-card{width:min(760px,calc(100% - 32px));margin:12px auto 0;background:#fff;border:1px solid var(--line-strong);border-radius:14px;padding:18px;box-shadow:var(--shadow)}.search-head{display:flex;justify-content:space-between;align-items:flex-start;gap:14px}.search-head div{display:flex;flex-direction:column}.search-head strong{font-size:18px;color:var(--ink)}.search-head span{font-size:13px;color:var(--muted)}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 12px}.search-presets a{min-height:40px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--line-strong);border-radius:999px;color:var(--deep);background:var(--pale)}.search-card p{font-size:13px;color:var(--muted);margin:0}.mobile-bottom{display:none}.notice-box{padding:16px 18px;border:1px solid var(--line-strong);background:var(--pale);border-radius:12px;color:var(--deep)}.article-body{display:grid;gap:16px}.article-body section{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px}.article-body section p:last-child{margin-bottom:0}.contact-paths{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.contact-paths .card{min-height:170px}.small-meta{font-size:13px;color:var(--aux)}
@media (max-width:860px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:1fr}.index-split,.app-feature{grid-template-columns:1fr}.app-feature{align-items:start}.media-app{height:320px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.contact-paths{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:720px){body{padding-bottom:calc(48px + env(safe-area-inset-bottom));font-size:15px}.topline-inner,.curtain-inner,.footer-inner,.page-wrap{width:calc(100% - 32px)}.curtain-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:6px}.brand-link{max-width:120px}.brand-logo{max-width:108px}.drawer-toggle{min-width:70px;padding:0 12px}.app-link{padding:0 11px}.mirror-tabs{display:none}.site-main{padding-top:82px}.page-wrap{padding-top:24px}.page-head{padding:20px}.grid-2,.grid-4{grid-template-columns:1fr}.hero-media{height:260px}.drawer-panel{width:100%;max-height:78vh;border-radius:18px 18px 0 0}.drawer-scroll{max-height:calc(78vh - 62px)}.drawer-group{grid-template-columns:1fr;gap:8px}.drawer-group h2{grid-row:auto;padding-top:4px;margin-bottom:2px}.drawer-group a{grid-template-columns:1fr;gap:2px;padding:10px 8px}.search-layer{inset:0;top:0;background:var(--deep);color:#fff}.search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;background:var(--deep);color:#fff;padding:calc(28px + env(safe-area-inset-top)) 16px 80px}.search-head strong,.search-head span,.search-card p{color:#fff}.search-card .icon-close{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}.search-presets{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:24px}.search-presets a{justify-content:center;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.38);color:#fff}.mobile-bottom{position:fixed;z-index:77;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--line)}.mobile-bottom a{height:48px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--deep)}.mobile-bottom a.active{background:var(--brand);color:#fff}.site-footer{padding-bottom:28px}.footer-grid{grid-template-columns:1fr 1fr}.number-row,.shelf-row,.lesson-row,.legal-row,.help-row{grid-template-columns:46px 1fr}.contact-paths{grid-template-columns:1fr}.app-feature{grid-template-columns:1fr}.media-app{height:300px}}
@media (max-width:420px){.page-head h1,.hero-copy h1{font-size:23px}.footer-grid{grid-template-columns:1fr}.action-row .btn{flex:1 1 100%}.topline-inner{width:calc(100% - 20px)}.brand-text{font-size:15px}.drawer-toggle{min-width:64px}.app-link{font-size:13px}.search-presets{grid-template-columns:1fr 1fr}}