:root{--bg:#EEF5FB;--deep:#E3EEF7;--surface:#FFFFFF;--secondary:#D7E8F4;--title:#10263A;--text:#243848;--muted:#5A7388;--aux:#7E93A6;--brand:#3B9FE0;--bright:#62B7EE;--steel:#1E6FB8;--ice:#A9D6F2;--mint:#2FA8A0;--border:rgba(30,111,184,.16);--border-strong:rgba(59,159,224,.38);--shadow:0 16px 40px rgba(16,38,58,.08);--radius:14px;--header-h:136px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.shell{width:min(1220px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;z-index:50;top:0;left:0;right:0}.window-bar{height:22px;background:var(--steel);color:#fff;font-size:12px}.window-bar-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:#fff;padding:0 8px;cursor:pointer}.viewport-bar{height:70px;background:#fff;border-bottom:1px solid var(--border)}.viewport-inner{height:70px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand{justify-self:start;display:flex;align-items:center;min-height:44px}.brand-logo{height:36px;width:auto;object-fit:contain}.brand-fallback{font-size:22px;font-weight:800;color:var(--steel);letter-spacing:.04em}.tool-button,.app-button,.primary-btn,.secondary-btn{min-height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;font-weight:700;transition:.2s ease}.tool-button{border:1px solid var(--border-strong);background:var(--secondary);color:var(--title);padding:0 20px;cursor:pointer}.app-button{justify-self:end;padding:0 18px;background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);color:#fff}.tab-rail{height:44px;background:var(--ice);border-bottom:1px solid var(--border-strong)}.tab-rail-inner{height:44px;display:flex;align-items:center;gap:8px;overflow:hidden}.tab-rail a{padding:6px 12px;border-radius:8px;color:var(--title);font-size:14px;white-space:nowrap}.tab-rail a.is-active{background:var(--brand);color:#fff}main{padding-top:var(--header-h)}.page-shell{padding:40px 0 70px}.page-hero{padding:34px 0 18px}.page-hero .eyebrow,.eyebrow{display:inline-block;color:var(--steel);font-size:13px;font-weight:800;letter-spacing:.08em}.page-hero h1,.home-copy h1{font-size:clamp(28px,4vw,32px);line-height:1.24;margin:10px 0 14px;color:var(--title)}.lede{font-size:17px;color:var(--muted);max-width:860px}.cover-slot,.media-slot{background:linear-gradient(135deg,#fff,var(--secondary));border:1px solid var(--border);border-radius:16px;display:flex;align-items:center;justify-content:center;overflow:hidden}.cover-slot{max-height:300px;min-height:220px}.cover-slot img{width:100%;max-height:300px;object-fit:contain;object-position:center}.media-slot{min-height:190px}.media-slot img{width:100%;height:100%;max-height:240px;object-fit:contain;object-position:center}.placeholder-title{font-weight:800;color:var(--steel);font-size:24px;padding:40px;text-align:center}.home-cover{padding:30px 0 20px}.home-copy{padding:24px 0 8px;max-width:880px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.primary-btn{padding:0 20px;background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);color:#fff}.secondary-btn{padding:0 20px;background:#fff;border:1px solid var(--border-strong);color:var(--steel)}.section{padding:28px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.section h2{font-size:24px;line-height:1.3;color:var(--title);margin:0}.section-intro{color:var(--muted);max-width:760px;margin:8px 0 0}.tag-grid,.card-grid,.theme-grid,.feature-grid,.legal-grid,.faq-grid{display:grid;gap:16px}.tag-grid{grid-template-columns:repeat(3,1fr)}.tag-card,.card,.feature-card,.legal-card,.faq-item,.index-row,.shelf-row,.timeline-item,.long-strip,.note-block{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.tag-card{padding:18px;position:relative;overflow:hidden}.tag-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--bright)}.tag-card:nth-child(even):before{background:var(--mint)}.tag-card h3,.card h3,.feature-card h3,.legal-card h3{margin:0 0 8px;color:var(--title);font-size:18px}.tag-card p,.card p,.feature-card p,.legal-card p{margin:0;color:var(--muted)}.tag-card a,.text-link{display:inline-block;margin-top:12px;color:var(--steel);font-weight:700}.number-list{display:grid;gap:12px}.index-row{display:grid;grid-template-columns:70px 1fr auto;gap:18px;align-items:center;padding:16px 18px}.big-no{font-size:28px;font-weight:900;color:var(--steel);letter-spacing:.03em}.index-row h3{margin:0;color:var(--title)}.index-row p{margin:3px 0 0;color:var(--muted)}.three-panels{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{padding:16px}.card .media-slot{margin-bottom:14px;height:210px}.directory{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.directory .card{min-height:160px}.theme-grid{grid-template-columns:repeat(3,1fr)}.theme-tile{padding:24px;min-height:170px;border-radius:14px;color:var(--title);background:linear-gradient(145deg,var(--secondary),#fff);border:1px solid var(--border)}.theme-tile:nth-child(2n){background:linear-gradient(145deg,#dff3f1,#fff)}.theme-tile h3{margin-top:0}.shelf-list{display:grid;gap:12px}.shelf-row{display:grid;grid-template-columns:52px 1fr auto;gap:18px;padding:16px 18px;align-items:center}.shelf-row .slot{width:40px;height:40px;border-radius:10px;background:var(--secondary);display:grid;place-items:center;color:var(--steel);font-weight:900}.shelf-row h3{margin:0;color:var(--title)}.shelf-row p{margin:4px 0 0;color:var(--muted)}.timeline{position:relative;padding-left:28px}.timeline:before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:var(--ice)}.timeline-item{position:relative;padding:18px 20px;margin-bottom:16px}.timeline-item:before{content:"";position:absolute;left:-26px;top:23px;width:12px;height:12px;border-radius:50%;background:var(--brand);border:3px solid var(--bg)}.status{display:inline-flex;padding:4px 9px;border-radius:8px;background:var(--secondary);color:var(--steel);font-size:13px;font-weight:800}.feature-grid{grid-template-columns:repeat(4,1fr)}.feature-card{padding:18px}.app-layout,.wide-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:24px;align-items:center}.app-art{max-height:420px;min-height:300px}.app-art img{max-height:420px;width:100%;object-fit:contain}.app-icon{width:64px;height:64px;object-fit:contain;margin-bottom:14px}.article-stack{display:grid;gap:18px}.long-strip,.note-block{padding:22px}.long-strip h2,.note-block h2{margin:0 0 10px;font-size:21px;color:var(--title)}.long-strip p,.note-block p{margin:0 0 10px}.prose p{margin:0 0 16px}.prose h2{margin:30px 0 12px;color:var(--title);font-size:22px}.legal-grid{grid-template-columns:repeat(2,1fr)}.legal-card{padding:20px}.faq-grid{grid-template-columns:repeat(2,1fr)}.faq-item{padding:20px}.faq-item h2{font-size:18px;margin:0 0 8px;color:var(--title)}.faq-item p{margin:0;color:var(--text)}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.notice{background:var(--secondary);border:1px solid var(--border-strong);border-radius:14px;padding:18px;color:var(--title)}.site-footer{background:var(--title);color:#C7D8E6;padding:42px 0 calc(24px + env(safe-area-inset-bottom))}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:24px}.footer-brand{max-width:360px}.footer-brand>div{display:flex;gap:10px;align-items:center;margin:10px 0}.footer-brand span{display:block;color:#90abc0;font-size:12px}.footer-logo{height:32px;object-fit:contain}.site-footer nav h2{font-size:14px;color:#fff;margin:0 0 10px}.site-footer nav a{display:block;font-size:14px;margin:7px 0;color:#C7D8E6}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;font-size:13px;color:#9db3c4}.overlay{position:fixed;inset:0;background:rgba(16,38,58,.38);z-index:70;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.tool-drawer{position:fixed;z-index:80;top:0;right:0;width:min(420px,86vw);height:100dvh;background:#fff;transform:translateX(104%);visibility:hidden;pointer-events:none;transition:.25s ease;box-shadow:-18px 0 48px rgba(16,38,58,.14)}.tool-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:78px;padding:14px 18px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.drawer-brand{display:flex;gap:10px;align-items:center}.drawer-brand img{height:30px;max-width:150px;object-fit:contain}.drawer-brand span{display:block;color:var(--muted);font-size:11px}.icon-button{min-height:44px;padding:0 14px;border-radius:10px;border:1px solid var(--border-strong);background:#fff;color:var(--steel);cursor:pointer}.drawer-scroll{height:calc(100dvh - 78px);overflow:auto;padding:16px 18px 32px}.drawer-scroll section{margin-bottom:22px}.drawer-scroll h2{font-size:14px;color:var(--steel);margin:0 0 8px}.drawer-scroll a{display:block;padding:11px 12px;border-radius:10px}.drawer-scroll a:hover,.drawer-scroll a:focus-visible{background:var(--bg)}.drawer-scroll a strong,.drawer-scroll a span{display:block}.drawer-scroll a span{font-size:12px;color:var(--muted);margin-top:2px}.search-layer{position:fixed;z-index:75;left:0;right:0;top:92px;visibility:hidden;pointer-events:none;opacity:0;transition:.2s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:0 0 16px 16px;box-shadow:var(--shadow);padding:22px}.search-head{display:flex;justify-content:space-between;align-items:start;gap:20px}.search-head h2{margin:4px 0 14px;color:var(--title)}.search-field input{width:100%;height:50px;border:1px solid var(--border-strong);background:var(--bg);border-radius:12px;padding:0 14px;color:var(--muted)}.preset-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.preset-links a{padding:8px 12px;border-radius:9px;background:var(--secondary);color:var(--steel);font-weight:700}.no-scroll{overflow:hidden}.mobile-nav{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(59,159,224,.45);outline-offset:2px}.tool-button:hover,.secondary-btn:hover{background:var(--ice)}.app-button:hover,.primary-btn:hover{filter:brightness(.97)}
@media(max-width:900px){.tag-grid,.theme-grid{grid-template-columns:repeat(2,1fr)}.three-panels{grid-template-columns:1fr}.feature-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-brand{grid-column:1/-1}.app-layout,.wide-layout{grid-template-columns:1fr}.app-art{order:-1}}
@media(max-width:720px){:root{--header-h:92px}.shell{width:min(100% - 32px,1220px)}.tab-rail{display:none}.viewport-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-logo{height:30px}.brand-fallback{font-size:18px}.tool-button,.app-button{padding:0 12px;font-size:14px}.page-shell{padding-top:26px;padding-bottom:90px}.home-cover{padding-top:22px}.cover-slot{min-height:180px}.tag-grid,.theme-grid,.directory,.legal-grid,.faq-grid,.contact-grid{grid-template-columns:1fr}.index-row{grid-template-columns:54px 1fr}.index-row>a{grid-column:2}.shelf-row{grid-template-columns:46px 1fr}.shelf-row>a{grid-column:2}.feature-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.site-footer{padding-bottom:calc(78px + env(safe-area-inset-bottom))}.mobile-nav{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;z-index:60;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 28px rgba(16,38,58,.08)}.mobile-nav a{display:grid;place-items:center;min-width:0;font-size:13px;color:var(--muted)}.mobile-nav a.is-active{background:var(--brand);color:#fff}.search-layer{top:0;bottom:0;background:var(--ice)}.search-card{width:100%;height:100%;border:0;border-radius:0;background:var(--ice);padding:24px 16px}.overlay{z-index:70}.tool-drawer{z-index:80}}
@media(max-width:460px){.brand{max-width:118px}.brand-logo{max-width:118px}.tool-button,.app-button{padding:0 10px;font-size:13px}.feature-grid,.footer-grid{grid-template-columns:1fr}.section-head{display:block}.home-copy{padding-top:18px}.index-row{grid-template-columns:48px 1fr}.big-no{font-size:24px}}