:root{--bg:#F5FAFE;--deep:#E7F2FA;--card:#FFFFFF;--secondary:#D7EAF6;--title:#16324A;--text:#2A4156;--muted:#4E6A80;--aux:#6E8899;--blue:#4AA3E0;--light-blue:#6BB8EC;--deep-blue:#1B4A6E;--mist:#EAF5FC;--border:rgba(74,163,224,.16);--border-strong:rgba(74,163,224,.42);--shadow:0 12px 28px rgba(27,74,110,.08);--radius:12px;--max:1120px}
*{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","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.lock-scroll{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}a,button{outline:none}.skip-link{position:fixed;left:12px;top:-80px;z-index:200;background:#fff;color:var(--deep-blue);padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}.topline{position:fixed;inset:0 0 auto 0;height:22px;background:var(--deep-blue);color:#fff;z-index:60;font-size:12px}.topline-inner,.masthead-inner,.section-tabs-inner{max-width:var(--max);height:100%;margin:0 auto;display:flex;align-items:center;padding:0 16px}.topline-inner{justify-content:space-between}.text-action{border:0;background:transparent;color:#fff;min-height:22px;padding:0 8px;cursor:pointer}.masthead{position:fixed;left:0;right:0;top:22px;height:60px;background:#fff;border-bottom:1px solid var(--border);z-index:59}.masthead-inner{justify-content:space-between;gap:12px}.brand-home,.drawer-toggle,.app-link{min-width:88px;min-height:44px;display:flex;align-items:center}.brand-home{justify-content:flex-start}.drawer-toggle{justify-content:center;border:1px solid var(--border-strong);background:var(--mist);color:var(--deep-blue);border-radius:10px;cursor:pointer}.app-link{justify-content:flex-end;color:var(--deep-blue);font-weight:700}.brand-logo,.drawer-logo,.footer-logo{height:28px;width:auto;max-width:120px;object-fit:contain;object-position:center}.brand-fallback{font-size:16px;font-weight:800;color:var(--deep-blue)}.section-tabs{position:fixed;left:0;right:0;top:82px;height:40px;background:var(--mist);border-bottom:1px solid var(--border);z-index:58}.section-tabs-inner{justify-content:center;gap:8px}.tab-link{font-size:13px;padding:6px 16px;border-radius:9px;color:var(--deep-blue)}.tab-link.is-active{background:var(--blue);color:#fff}.site-main{max-width:var(--max);margin:0 auto;padding:154px 16px 56px;min-height:70vh}h1,h2,h3{color:var(--title);margin-top:0}h1{font-size:24px;line-height:1.3;margin-bottom:14px}h2{font-size:20px;line-height:1.4;margin-bottom:12px}h3{font-size:16px;line-height:1.45;margin-bottom:8px}p{margin:0 0 14px}.eyebrow{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.08em;text-transform:uppercase}.lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:850px}.page-head{padding:26px 0 20px}.page-head .lead{margin-bottom:0}.hero-card,.section-card,.article-card,.note-card,.policy-card,.faq-item,.index-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-card{padding:18px;margin-bottom:24px}.hero-copy{padding:18px 2px 2px}.hero-copy h1{margin-bottom:10px}.media-slot{width:100%;display:flex;align-items:center;justify-content:center;background:var(--mist);border:1px solid var(--border);border-radius:12px;overflow:hidden}.media-slot img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.media-placeholder{background:linear-gradient(135deg,#fff 0%,var(--mist) 100%)}.banner-slot{height:260px}.card-image{height:180px}.wide-image{height:200px}.app-image{height:min(360px,62vw)}.small-icon{width:48px;height:48px;border-radius:10px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{min-height:42px;padding:9px 16px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:14px;font-weight:700}.btn-primary{background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%);color:#fff}.btn-secondary{background:#fff;border:1px solid var(--border-strong);color:var(--deep-blue)}.btn:hover,.btn:focus-visible,.tab-link:hover,.tab-link:focus-visible,.drawer-panel a:hover,.drawer-panel a:focus-visible,.footer-grid a:hover,.footer-grid a:focus-visible,.mobile-bottom a:focus-visible{transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,74,110,.09)}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.index-card,.article-card,.note-card,.policy-card{padding:16px}.index-card .media-slot,.article-card .media-slot{margin-bottom:14px}.section-block{margin:28px 0}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:14px}.section-heading p{margin:0;color:var(--muted)}.number-list{display:grid;gap:10px}.number-item{display:grid;grid-template-columns:46px 1fr;gap:12px;align-items:start;padding:14px;background:#fff;border:1px solid var(--border);border-radius:10px}.number-item .num{font-size:18px;font-weight:800;color:var(--blue)}.shelf{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.shelf a{display:block;background:#fff;border:1px solid var(--border);border-radius:10px;padding:14px;min-height:128px}.shelf strong{display:block;color:var(--title);margin-bottom:6px}.timeline{position:relative;padding-left:18px}.timeline:before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:var(--secondary)}.timeline-item{position:relative;background:#fff;border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin-bottom:12px}.timeline-item:before{content:"";position:absolute;left:-17px;top:21px;width:10px;height:10px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px var(--mist)}.status{display:inline-flex;font-size:12px;font-weight:800;color:var(--deep-blue);background:var(--mist);padding:3px 8px;border-radius:999px}.article-stack{display:grid;gap:14px}.article-card h2,.article-card h3{margin-bottom:8px}.article-meta{font-size:13px;color:var(--aux);margin-bottom:8px}.quote-note{padding:14px 16px;border-left:4px solid var(--blue);background:var(--mist);color:var(--deep-blue);border-radius:0 10px 10px 0}.toc-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.toc-grid a{display:block;padding:16px;background:#fff;border:1px solid var(--border);border-radius:10px}.toc-grid strong{display:block;color:var(--title);margin-bottom:6px}.policy-card ul,.article-card ul{padding-left:20px;margin:8px 0 0}.policy-card li,.article-card li{margin-bottom:7px}.faq-list{display:grid;gap:12px}.faq-item{padding:16px}.faq-item h2{font-size:16px}.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.contact-card{padding:16px;background:#fff;border:1px solid var(--border);border-radius:10px}.contact-card h2{font-size:16px}.app-hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(240px,.85fr);gap:18px;align-items:stretch}.app-hero-copy{background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px}.app-identity{display:flex;align-items:center;gap:12px;margin-bottom:14px}.app-identity .media-slot{flex:0 0 48px}.site-footer{background:var(--deep-blue);color:#E7F2FA;border-top:1px solid rgba(234,245,252,.35);font-size:13px;padding:34px 0 calc(24px + env(safe-area-inset-bottom))}.footer-inner{max-width:var(--max);margin:0 auto;padding:0 16px}.footer-brand-line{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;margin-bottom:10px}.footer-brand p{max-width:760px;color:#D7EAF6}.footer-en{font-size:13px;font-weight:600}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:22px;padding-top:20px;border-top:1px solid rgba(234,245,252,.18)}.footer-grid h2{font-size:13px;color:#fff;margin-bottom:8px}.footer-grid a{display:block;color:#E7F2FA;padding:3px 0}.footer-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px;padding-top:14px;border-top:1px solid rgba(234,245,252,.18);color:#D7EAF6}.page-overlay{position:fixed;inset:0;background:rgba(22,50,74,.42);z-index:70}.page-overlay[hidden]{display:none}.drawer-panel{position:fixed;top:0;right:0;bottom:0;width:400px;max-width:86vw;background:#fff;z-index:80;transform:translateX(105%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;box-shadow:-16px 0 40px rgba(27,74,110,.18)}.drawer-panel.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:70px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:8px;color:var(--deep-blue)}.icon-close,.search-head button{min-height:44px;padding:8px 12px;border:1px solid var(--border-strong);border-radius:9px;background:#fff;color:var(--deep-blue);cursor:pointer}.drawer-scroll{height:calc(100% - 70px);overflow:auto;padding:14px 16px 28px}.drawer-scroll section{margin-bottom:20px}.drawer-scroll h2{font-size:13px;color:var(--aux);margin:0 0 8px}.drawer-scroll a{display:block;padding:10px;border-radius:9px}.drawer-scroll a strong{display:block;color:var(--title);font-size:14px}.drawer-scroll a span{display:block;color:var(--muted);font-size:12px;line-height:1.55;margin-top:2px}.search-layer{position:fixed;top:82px;left:0;right:0;z-index:90;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:.18s ease}.search-layer.is-open{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}.search-card{max-width:760px;margin:12px auto;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--title)}.search-card p{color:var(--muted);font-size:13px}.search-links{display:flex;flex-wrap:wrap;gap:8px}.search-links a{padding:8px 12px;border-radius:8px;background:var(--mist);color:var(--deep-blue);min-height:40px;display:inline-flex;align-items:center}.mobile-bottom{display:none}.muted{color:var(--muted)}.mini-note{font-size:13px;color:var(--aux)}.split-section{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.65fr);gap:18px;align-items:start}.feature-list{display:grid;gap:10px}.feature-list .article-card{box-shadow:none}.center-note{text-align:center;color:var(--muted);padding:8px 0}.table-like{display:grid;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:10px;overflow:hidden}.table-row{display:grid;grid-template-columns:160px 1fr;gap:14px;background:#fff;padding:13px 14px}.table-row strong{color:var(--title)}
@media(max-width:900px){.shelf{grid-template-columns:repeat(2,minmax(0,1fr))}.toc-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.app-hero,.split-section{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){.section-tabs{display:none}.site-main{padding-top:112px;padding-bottom:86px}.grid-3,.grid-2,.contact-grid{grid-template-columns:1fr}.banner-slot{height:220px}.card-image{height:180px}.wide-image{height:190px}.section-heading{align-items:start;flex-direction:column;gap:4px}.shelf{grid-template-columns:1fr}.toc-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--border);z-index:50;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--deep-blue)}.mobile-bottom a.is-active{background:var(--blue);color:#fff}.search-layer{top:0;bottom:0;background:var(--deep-blue);padding:16px}.search-card{height:100%;margin:0;background:transparent;border:0;box-shadow:none;color:#fff;padding:52px 0 0}.search-head{color:#fff}.search-head button{color:#fff;border-color:rgba(255,255,255,.4);background:transparent}.search-card p{color:#E7F2FA}.search-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.search-links a{background:#fff;color:var(--deep-blue);justify-content:center}.table-row{grid-template-columns:1fr;gap:4px}.brand-home,.drawer-toggle,.app-link{min-width:76px}.app-link{font-size:13px}}
@media(max-width:420px){.footer-grid{grid-template-columns:1fr 1fr}.search-links{grid-template-columns:1fr}.banner-slot{height:200px}.masthead-inner{gap:8px}.brand-home,.drawer-toggle,.app-link{min-width:68px}.drawer-toggle{padding:0 10px}.app-link{font-size:12px}.footer-meta{padding-bottom:6px}}

.spaced-top{margin-top:14px}.zero-bottom{margin-bottom:0}