:root{--bg:#EEF5FB;--deep:#E3EEF7;--card:#fff;--sub:#D7E8F4;--ink:#10263A;--text:#243848;--muted:#5A7388;--soft:#7E93A6;--brand:#3B9FE0;--bright:#62B7EE;--steel:#1E6FB8;--ice:#A9D6F2;--mint:#2FA8A0;--line:rgba(30,111,184,.16);--line-strong:rgba(59,159,224,.38);--shadow:0 16px 40px rgba(16,38,58,.08);--radius:14px;--header-h:120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button{font:inherit}.shell{width:min(1220px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;z-index:80;top:0;left:0;right:0}.brand-strip{height:18px;background:var(--steel);color:#fff;font-size:11px;line-height:18px}.strip-inner{display:flex;justify-content:space-between;align-items:center}.text-button{border:0;background:transparent;color:#fff;padding:0 4px;cursor:pointer}.window-bar{height:62px;background:#fdfefe;border-bottom:1px solid var(--line)}.window-inner{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand-link{justify-self:start;min-width:0}.brand-logo-wrap{display:flex;align-items:center;gap:10px}.brand-logo-wrap img{height:34px;width:auto;max-width:180px;object-fit:contain}.brand-fallback{font-weight:800;color:var(--ink);white-space:nowrap}.brand-logo-wrap:has(img) .brand-fallback{display:none}.window-book-button,.app-link,.primary-button,.secondary-button{min-height:44px;border-radius:10px;padding:10px 18px;font-weight:700}.window-book-button{border:1px solid var(--line-strong);background:#fff;color:var(--steel);cursor:pointer}.app-link{justify-self:end;display:inline-flex;align-items:center;background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);color:#fff}.tab-track{height:40px;background:#dff0fa;border-bottom:1px solid var(--line)}.tab-track-inner{height:100%;display:flex;align-items:center;gap:4px}.tab{height:30px;display:inline-flex;align-items:center;padding:0 14px;border-radius:8px;color:var(--ink);font-size:14px}.tab:hover,.tab:focus-visible{outline:2px solid var(--line-strong)}.tab.is-active{background:var(--brand);color:#fff}.site-main{padding-top:calc(var(--header-h) + 28px)}.page-section{padding:30px 0}.page-section.compact{padding:20px 0}.hero,.page-hero{background:linear-gradient(145deg,#fafdff,#dbeef9);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}.hero-media,.image-slot{display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#e7f3fb,#f8fcff);min-height:180px;border-bottom:1px solid var(--line)}.hero-media{max-height:300px;aspect-ratio:16/9}.hero-media img{width:100%;height:100%;max-height:300px;object-fit:contain;object-position:center}.hero-copy,.page-hero-copy{padding:26px}.eyebrow{color:var(--steel);font-weight:800;letter-spacing:.08em}.hero h1,.page-hero h1{margin:.2em 0 .4em;color:var(--ink);font-size:clamp(28px,4vw,32px);line-height:1.3}.lead{font-size:17px;color:var(--text);max-width:900px}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.primary-button{display:inline-flex;align-items:center;background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);color:#fff}.secondary-button{display:inline-flex;align-items:center;background:#fff;color:var(--steel);border:1px solid var(--line-strong)}.primary-button:hover,.secondary-button:hover,.primary-button:focus-visible,.secondary-button:focus-visible,.app-link:focus-visible,.window-book-button:focus-visible{box-shadow:0 0 0 3px rgba(59,159,224,.2);outline:none}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:16px}.section-head h2{margin:0;color:var(--ink);font-size:25px}.section-head p{margin:0;color:var(--muted)}.card-grid{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:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 8px 24px rgba(16,38,58,.04)}.card h3{margin:0 0 8px;color:var(--ink);font-size:18px}.card p{margin:0;color:var(--muted)}.tag-card{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)}.number-card{display:grid;grid-template-columns:64px 1fr;gap:14px;align-items:start}.number{font-size:42px;font-weight:900;color:var(--steel);line-height:1}.feature-split{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:22px;align-items:stretch}.feature-split.reverse{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}.feature-image{background:var(--deep);border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;min-height:220px;padding:16px}.feature-image img{width:100%;height:100%;max-height:240px;object-fit:contain;object-position:center}.feature-copy{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}.feature-copy h2,.feature-copy h3{color:var(--ink);margin-top:0}.stack-list{display:grid;gap:10px}.stack-list a,.shelf-row{display:flex;justify-content:space-between;gap:14px;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:12px}.shelf-row span:last-child,.stack-list small{color:var(--muted)}.status-card{border-top:4px solid var(--brand)}.status-card:nth-child(2){border-top-color:var(--mint)}.status-card:nth-child(3){border-top-color:var(--bright)}.status-card:nth-child(4){border-top-color:var(--steel)}.article-body{background:#fff;border:1px solid var(--line);border-radius:16px;padding:clamp(22px,4vw,38px);box-shadow:var(--shadow)}.article-body h2{color:var(--ink);margin-top:1.6em}.article-body h2:first-child{margin-top:0}.article-body h3{color:var(--steel)}.article-body p,.article-body li{color:var(--text)}.article-body ul{padding-left:1.2em}.notice{background:#e6f5f3;border-left:4px solid var(--mint);padding:16px 18px;border-radius:10px;color:var(--ink)}.opinion{border-left:4px solid var(--brand);background:#edf7fd;padding:18px;border-radius:10px}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}.faq-item h2,.faq-item h3{margin:0 0 10px;color:var(--ink);font-size:18px}.faq-item p{margin:0}.site-footer{margin-top:46px;background:#10263A;color:#C7D8E6;padding:34px 0 calc(24px + env(safe-area-inset-bottom))}.footer-top{display:grid;grid-template-columns:1.2fr 2fr;gap:36px}.footer-brand p{max-width:460px;color:#aec3d4}.footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:20px}.footer-logo img{height:32px;width:auto;object-fit:contain}.footer-en{font-size:12px;letter-spacing:.12em;color:#94b7d0}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-groups h2{font-size:15px;color:#fff;margin:0 0 10px}.footer-groups a{display:block;color:#b9cede;padding:4px 0;font-size:14px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:18px;font-size:13px;color:#9eb6c8}.overlay{position:fixed;inset:0;background:rgba(16,38,58,.34);z-index:85;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.window-book,.search-panel{position:fixed;left:0;right:0;top:80px;z-index:90;visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-10px);transition:.2s}.window-book.is-open,.search-panel.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:none}.book-shell,.search-shell{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);max-height:50vh;overflow:auto;border-radius:0 0 16px 16px}.book-head,.search-head{position:sticky;top:0;background:#fff;z-index:2;display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--line)}.book-brand{display:flex;align-items:center;gap:8px;color:var(--ink)}.book-brand img{height:30px;width:auto;object-fit:contain}.close-button{min-width:44px;min-height:44px;border:1px solid var(--line-strong);background:#fff;color:var(--steel);border-radius:10px;cursor:pointer}.book-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:18px}.book-grid h2{font-size:15px;color:var(--steel);margin:0 0 8px}.book-grid a{display:block;padding:10px 0;border-bottom:1px dashed var(--line)}.book-grid a strong{display:block;color:var(--ink);font-size:14px}.book-grid a span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:2px}.search-shell{padding-bottom:18px}.search-look{margin:18px;background:var(--deep);border:1px solid var(--line);border-radius:12px;padding:15px 16px;color:var(--muted)}.search-links{display:flex;gap:10px;flex-wrap:wrap;padding:0 18px}.search-links a{min-height:44px;display:inline-flex;align-items:center;padding:8px 16px;background:#fff;border:1px solid var(--line-strong);border-radius:10px;color:var(--steel)}.modal-open{overflow:hidden}.mobile-bottom{display:none}
@media(max-width:860px){:root{--header-h:80px}.tab-track{display:none}.site-main{padding-top:calc(var(--header-h) + 22px)}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-split,.feature-split.reverse{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr}.footer-groups{grid-template-columns:repeat(2,1fr)}.window-book,.search-panel{top:80px}.book-shell{width:100%;max-height:66vh;border-radius:0}.book-grid{grid-template-columns:repeat(2,1fr)}.search-panel{top:0;bottom:0;background:#dff0fa}.search-shell{width:100%;height:100%;max-height:none;border:0;border-radius:0;background:#dff0fa;padding-top:max(12px,env(safe-area-inset-top))}.search-head{background:#dff0fa}.mobile-bottom{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-bottom a{display:flex;align-items:center;justify-content:center;min-width:0;font-size:13px;color:var(--muted)}.mobile-bottom a.is-active{background:var(--brand);color:#fff}.site-footer{padding-bottom:calc(78px + env(safe-area-inset-bottom))}.brand-strip .shell{width:calc(100% - 24px)}.window-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-logo-wrap img{max-width:118px;height:30px}.brand-fallback{font-size:16px}.window-book-button,.app-link{padding:8px 12px;min-height:44px}.shell{width:min(100% - 32px,1220px)}}
@media(max-width:620px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.hero-copy,.page-hero-copy{padding:20px}.book-grid{grid-template-columns:1fr}.book-grid section{padding-bottom:4px}.footer-groups{grid-template-columns:1fr 1fr}.section-head{align-items:start;flex-direction:column;gap:6px}.number-card{grid-template-columns:52px 1fr}.number{font-size:36px}.window-inner{gap:6px}.app-link{font-size:13px;padding:8px 10px}.window-book-button{font-size:13px;padding:8px 10px}.brand-logo-wrap img{max-width:105px}.brand-fallback{font-size:15px}}