:root{--bg:#F3F6F9;--surface:#FFFFFF;--soft:#E8EEF5;--ink:#0B1220;--text:#1E293B;--muted:#475569;--light:#64748B;--blue:#2563EB;--blue2:#60A5FA;--blue3:#1D4ED8;--lime:#65A30D;--slate:#334155;--line:rgba(37,99,235,.16);--shadow:0 14px 36px rgba(11,18,32,.08);--radius:18px;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}body{margin:0;color:var(--text);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{max-width:100%;height:auto;display:block}.shell{width:min(calc(100% - 32px),var(--max));margin:0 auto}.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}
.site-header{position:fixed;inset:0 0 auto;z-index:80}.status-bar{height:32px;background:var(--slate);color:#fff}.status-inner{height:32px;display:flex;align-items:center;justify-content:space-between}.status-brand{font-size:13px;font-weight:700;letter-spacing:.03em}.status-search{height:32px;border:0;background:transparent;color:#fff;padding:0 2px;min-width:52px}.command-bar{height:60px;background:#fff;border-bottom:1px solid var(--line)}.command-inner{height:60px;display:grid;grid-template-columns:120px 1fr 120px;align-items:center}.menu-square{width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px}.menu-square span{width:16px;height:2px;background:var(--slate);border-radius:3px}.command-logo{justify-self:center;display:flex;align-items:center;min-height:44px}.command-mark{max-height:32px;max-width:170px;width:auto}.brand-text{font-weight:900;letter-spacing:.08em;color:var(--ink)}.app-open{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:999px;background:linear-gradient(135deg,var(--blue2) 0%,var(--blue) 52%,var(--blue3) 100%);color:#fff;font-weight:800}.tab-bar{height:44px;background:#fff;border-bottom:1px solid var(--line)}.tab-inner{height:44px;display:grid;grid-template-columns:repeat(6,1fr);align-items:end}.tab-inner a{height:44px;display:flex;align-items:center;justify-content:center;position:relative;color:var(--muted);font-size:14px}.tab-inner a.active{color:var(--blue);font-weight:800}.tab-inner a.active:after{content:"";position:absolute;left:24%;right:24%;bottom:0;height:3px;background:var(--blue);border-radius:3px 3px 0 0}
.site-main{padding-top:160px;padding-bottom:40px}.page-shell{width:min(calc(100% - 32px),var(--max));margin:0 auto}.page-hero{margin-bottom:30px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.08em;text-transform:uppercase}.eyebrow:before{content:"";width:8px;height:8px;background:var(--lime);border-radius:50%}h1,h2,h3{color:var(--ink);line-height:1.25;margin:0}h1{font-size:clamp(28px,4vw,32px);margin-top:10px}h2{font-size:22px}h3{font-size:18px}.lead{font-size:17px;color:var(--muted);max-width:820px;margin:16px 0 0}.section-block{margin:34px 0;padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.section-block>h2{margin-bottom:14px}.section-block p{margin:10px 0;color:var(--text)}.section-block p:last-child{margin-bottom:0}.subtle{color:var(--light)}.note{padding:14px 16px;border-left:4px solid var(--blue);background:var(--soft);border-radius:0 12px 12px 0;color:var(--muted)}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border-radius:999px;font-weight:800}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--blue2) 0%,var(--blue) 52%,var(--blue3) 100%)}.btn-secondary{color:var(--blue);background:#fff;border:1px solid var(--blue)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:3px}
.media-frame{margin-top:22px;border-radius:20px;overflow:hidden;background:var(--soft);border:1px solid var(--line)}.media-frame img{width:100%;max-height:340px;object-fit:cover}.media-slot{min-height:240px;background:linear-gradient(145deg,#f7faff,#e8eef5);border:1px dashed rgba(37,99,235,.24);border-radius:18px}.cover-card{padding:30px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px}.home-title{max-width:760px}.theme-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.theme-item{display:block;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;min-height:120px}.theme-item b{display:flex;align-items:center;gap:8px;color:var(--ink)}.theme-item b:before{content:"";width:8px;height:8px;background:var(--blue);border-radius:50%}.theme-item span{display:block;color:var(--muted);font-size:14px;margin-top:8px}.number-story{display:grid;grid-template-columns:110px 1fr;gap:22px;padding:22px 0;border-top:1px solid var(--line)}.number-story:first-of-type{border-top:0}.big-num{font-size:48px;line-height:1;font-weight:900;color:var(--blue)}.card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.content-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}.content-card .card-body{padding:18px}.content-card p{color:var(--muted)}.stack-pair{display:grid;gap:18px}.stack-card{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.quad-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.quad-grid a{background:var(--soft);border-radius:16px;padding:18px;min-height:130px}.quad-grid b{color:var(--ink);display:block;margin-bottom:8px}.file-list{display:grid;gap:10px}.file-row{display:grid;grid-template-columns:1.1fr 2fr auto;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);padding:16px;border-radius:14px}.file-row small{color:var(--light)}.file-row a{color:var(--blue);font-weight:800}.meter-list{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.meter-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.meter-item strong{display:block;color:var(--blue);font-size:42px;line-height:1}.meter-item b{display:block;margin-top:12px;color:var(--ink)}.timeline{position:relative;margin-left:10px}.timeline:before{content:"";position:absolute;left:10px;top:10px;bottom:10px;width:2px;background:var(--line)}.timeline-item{position:relative;padding:0 0 26px 42px}.timeline-item:last-child{padding-bottom:0}.timeline-item:before{content:"";position:absolute;left:4px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 5px #fff}.status-chip{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:999px;background:var(--soft);color:var(--blue);font-size:13px;font-weight:800}.index-list{display:grid;gap:12px}.index-list a,.index-list article{display:grid;grid-template-columns:72px 1fr;gap:16px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:16px}.index-list strong{font-size:26px;color:var(--blue)}.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.tag{display:inline-flex;padding:6px 10px;border-radius:999px;background:var(--soft);color:var(--slate);font-size:13px}.wide-media{display:grid;grid-template-columns:1.2fr 1fr;gap:22px;align-items:center}.wide-media .media-frame{margin:0}.serial-bars{display:grid;gap:10px}.serial-bar{display:grid;grid-template-columns:90px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}.serial-bar strong{color:var(--blue)}.workshop-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.step-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.step-card span{display:block;color:var(--blue);font-weight:900;margin-bottom:8px}.policy-list{counter-reset:policy;display:grid;gap:14px}.policy-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.policy-item h2{display:flex;gap:10px}.policy-item h2:before{counter-increment:policy;content:counter(policy,decimal-leading-zero);color:var(--blue)}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.faq-item h2{font-size:18px}.faq-item p{margin-bottom:0}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.contact-card a{color:var(--blue);font-weight:800}.phone-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:center}.phone-layout .media-frame img{max-height:500px;object-fit:contain;background:#fff}
.site-footer{background:var(--ink);color:#D6E4FF;padding:46px 0 90px}.footer-grid{display:grid;grid-template-columns:1.1fr 2fr;gap:36px}.footer-brand-link{display:inline-flex;align-items:center;gap:14px}.footer-mark{max-width:140px;max-height:34px}.footer-brand-link span{display:flex;flex-direction:column}.footer-brand-link small{color:#9FB6DA}.footer-brand-block p{max-width:420px;color:#B8C8E2;font-size:14px}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-links h2{font-size:14px;color:#fff;margin-bottom:10px}.footer-links a{display:block;color:#BFD0EC;font-size:14px;margin:7px 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:20px;color:#91A8CC;font-size:13px}
.ui-backdrop{position:fixed;inset:0;background:rgba(11,18,32,.58);z-index:90;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.ui-backdrop.is-open{opacity:1;visibility:visible;pointer-events:auto}.mosaic-menu{position:fixed;inset:0;z-index:100;background:var(--bg);transform:translateY(-14px);opacity:0;visibility:hidden;pointer-events:none;transition:.22s;overflow:auto}.mosaic-menu.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto}.mosaic-shell{padding:24px 0 44px}.mosaic-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.mosaic-brand{display:flex;align-items:center;gap:14px}.mosaic-mark{max-height:34px;max-width:150px}.mosaic-brand span{display:flex;flex-direction:column}.mosaic-brand small{color:var(--light)}.close-btn{width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--ink);font-size:26px;line-height:1}.mosaic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.mosaic-grid section{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.mosaic-grid h2{font-size:16px;margin-bottom:12px}.mosaic-grid a{display:block;border-top:1px solid var(--line);padding:12px 0}.mosaic-grid a:first-of-type{border-top:0}.mosaic-grid b{display:block;color:var(--ink)}.mosaic-grid span{display:block;color:var(--muted);font-size:13px;margin-top:4px}.search-panel{position:fixed;z-index:101;top:92px;left:0;right:0;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto}.search-card{width:min(calc(100% - 32px),820px);margin:16px auto 0;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 22px 60px rgba(11,18,32,.22);padding:22px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-form label{display:block;color:var(--muted);margin:14px 0 8px}.search-field{display:grid;grid-template-columns:1fr 96px;gap:8px}.search-field input{min-height:48px;border:1px solid var(--line);border-radius:12px;padding:0 14px;color:var(--ink);background:#fff}.search-field button{border:0;border-radius:12px;background:var(--blue);color:#fff;font-weight:800}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.search-presets a{padding:8px 12px;background:var(--soft);border-radius:999px;color:var(--slate);font-size:14px}.ui-locked{overflow:hidden}.mobile-nav{display:none}
@media(max-width:900px){.card-grid-3{grid-template-columns:1fr}.theme-strip{grid-template-columns:repeat(2,1fr)}.meter-list{grid-template-columns:repeat(2,1fr)}.meter-item:last-child{grid-column:1/-1}.stack-card,.wide-media,.phone-layout{grid-template-columns:1fr}.workshop-steps{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr}.mosaic-grid{grid-template-columns:repeat(2,1fr)}.file-row{grid-template-columns:1fr}.contact-grid{grid-template-columns:1fr 1fr}}
@media(max-width:700px){body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.site-main{padding-top:116px}.command-inner{grid-template-columns:72px 1fr 88px}.tab-bar{display:none}.app-open{padding:0 12px;font-size:14px}.command-mark{max-width:145px}.search-panel{top:92px;bottom:0;background:var(--bg);overflow:auto}.search-card{width:100%;margin:0;border:0;border-radius:0;box-shadow:none;min-height:100%;padding:20px 16px}.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mosaic-grid section{padding:14px}.mosaic-grid span{font-size:12px}.section-block,.cover-card{padding:20px}.number-story{grid-template-columns:70px 1fr;gap:12px}.big-num{font-size:38px}.quad-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,1fr)}.mobile-nav{position:fixed;z-index:70;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(--line);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-nav a{min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--light);font-size:11px;line-height:1.2}.mobile-nav a span{font-size:16px;margin-bottom:2px}.mobile-nav a.active{color:var(--blue);font-weight:800}.site-footer{padding-bottom:80px}.theme-strip{grid-template-columns:1fr}.meter-list{grid-template-columns:1fr}.meter-item:last-child{grid-column:auto}.workshop-steps{grid-template-columns:1fr}.contact-grid{grid-template-columns:1fr}.index-list a,.index-list article{grid-template-columns:56px 1fr}.serial-bar{grid-template-columns:1fr}.media-slot{min-height:180px}}
@media(max-width:420px){.shell,.page-shell{width:min(calc(100% - 32px),var(--max))}.command-inner{grid-template-columns:60px 1fr 82px}.command-logo{max-width:150px;overflow:hidden}.app-open{padding:0 10px}.mosaic-grid{grid-template-columns:1fr 1fr}.mosaic-grid a{padding:10px 0}.mosaic-grid b{font-size:14px}.mosaic-grid span{font-size:11px;line-height:1.55}.search-field{grid-template-columns:1fr}.search-field button{min-height:44px}.footer-links{grid-template-columns:1fr 1fr}}