:root{--page:#F5FAFE;--deep-bg:#E7F2FA;--surface:#FFFFFF;--secondary:#D7EAF6;--title:#16324A;--text:#2A4156;--muted:#4E6A80;--soft:#6E8899;--brand:#4AA3E0;--bright:#6BB8EC;--deep:#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);--max:1120px;--radius:12px;--topline:22px;--masthead:60px;--tabs:40px}
*{box-sizing:border-box}html{min-width:0;scroll-behavior:smooth}body{margin:0;min-width:0;overflow-x:hidden;background:var(--page);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7}body.ui-locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{max-width:100%}:focus-visible{outline:3px solid rgba(74,163,224,.36);outline-offset:3px}
.topline{position:fixed;z-index:1000;top:0;left:0;right:0;height:var(--topline);background:var(--deep);color:#fff;font-size:12px}.topline-inner,.masthead-inner,.section-tabs-inner,.footer-inner,.page-shell{width:min(var(--max),calc(100% - 32px));margin:0 auto}.topline-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}.top-search-button{height:22px;padding:0 8px;border:0;background:transparent;color:#fff;font-size:12px}
.masthead{position:fixed;z-index:990;top:var(--topline);left:0;right:0;height:var(--masthead);background:var(--surface);border-bottom:1px solid var(--border)}.masthead-inner{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.masthead-left{display:flex;align-items:center;justify-content:flex-start;min-width:0}.brand-home,.drawer-brand,.footer-brand{display:inline-flex;align-items:center;gap:10px}.brand-logo{display:block;height:28px;width:auto;object-fit:contain}.brand-fallback{font-weight:800;font-size:18px;color:var(--title);letter-spacing:.04em}.drawer-button,.app-entry{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 16px;border-radius:10px;font-size:14px;white-space:nowrap}.drawer-button{border:1px solid var(--border-strong);background:var(--surface);color:var(--deep)}.app-entry{justify-self:end;color:#fff;background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%)}
.section-tabs{position:fixed;z-index:980;top:calc(var(--topline) + var(--masthead));left:0;right:0;height:var(--tabs);background:var(--mist);border-bottom:1px solid var(--border)}.section-tabs-inner{height:100%;display:flex;align-items:center;justify-content:center;gap:8px}.tab-link{min-width:88px;height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;color:var(--deep);font-size:13px}.tab-link:hover{background:#fff}.tab-link.is-current{background:var(--brand);color:#fff}
.site-main{min-height:70vh;padding-top:calc(var(--topline) + var(--masthead) + var(--tabs))}.page-shell{padding:38px 0 72px}.page-hero,.cover-section{background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:26px;margin-bottom:24px}.eyebrow{display:inline-block;color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}h1,h2,h3{color:var(--title);margin:0}h1{margin-top:8px;font-size:24px;line-height:1.3}h2{font-size:20px;line-height:1.4}h3{font-size:16px;line-height:1.45}p{margin:0}.lead{margin-top:12px;max-width:860px;color:var(--muted)}.section-block{margin-top:28px}.section-head{margin-bottom:14px;display:flex;align-items:end;justify-content:space-between;gap:16px}.section-head p{color:var(--soft);font-size:13px}
.cover-image{height:260px}.media-slot,.media-slot-tall,.card-media{width:100%;overflow:hidden;border:1px solid var(--border);background:var(--mist);border-radius:12px;display:flex;align-items:center;justify-content:center}.media-slot{min-height:190px}.media-slot-tall{height:360px}.card-media{height:180px;border-radius:10px 10px 0 0;border-width:0 0 1px}.media-slot img,.media-slot-tall img,.card-media img,.cover-image img{width:100%;height:100%;object-fit:contain;object-position:center}.cover-copy{padding-top:20px}.cover-copy h1{margin-bottom:10px}.cover-copy p{max-width:820px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 17px;border-radius:10px;border:1px solid transparent;font-size:14px;line-height:1;white-space:nowrap}.button-primary{background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%);color:#fff}.button-secondary{background:#fff;color:var(--deep);border-color:var(--border-strong)}.button:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,74,110,.10)}
.grid-3,.grid-2,.grid-4,.topic-grid,.policy-grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.topic-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.policy-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.card,.text-card,.topic-card,.notice-card,.faq-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card{overflow:hidden}.card-body{padding:18px}.card-body p,.text-card p,.topic-card p,.notice-card p,.faq-card p{margin-top:9px;color:var(--muted)}.card-link{margin-top:14px;display:inline-flex;min-height:44px;align-items:center;color:var(--deep);font-weight:700}.text-card,.topic-card,.notice-card,.faq-card{padding:20px}.topic-card{min-height:190px}.topic-card .number,.number-card .number{display:block;margin-bottom:9px;color:var(--brand);font-size:26px;font-weight:800;letter-spacing:.02em}
.feature-split{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px;align-items:stretch}.feature-copy{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.feature-copy p{margin-top:12px;color:var(--muted)}.issue-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:18px 0 0}.issue-list a{min-height:72px;padding:12px;border:1px solid var(--border);background:var(--mist);border-radius:10px;color:var(--deep)}.issue-list b{display:block;color:var(--brand);font-size:12px}
.shelf-list{display:grid;gap:10px}.shelf-item{display:grid;grid-template-columns:54px 1fr auto;gap:14px;align-items:center;min-height:72px;padding:12px 16px;background:var(--surface);border:1px solid var(--border);border-radius:11px}.shelf-index{color:var(--brand);font-weight:800}.shelf-item p{color:var(--muted);font-size:13px}.shelf-arrow{color:var(--deep);font-weight:700}
.timeline{position:relative;margin-left:11px;padding-left:28px;border-left:2px solid var(--secondary);display:grid;gap:18px}.timeline-item{position:relative;padding:18px 20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.timeline-item::before{content:"";position:absolute;left:-36px;top:24px;width:14px;height:14px;border-radius:50%;background:var(--brand);border:3px solid var(--page)}.status{display:inline-flex;min-height:26px;align-items:center;padding:0 9px;border-radius:999px;background:var(--mist);color:var(--deep);font-size:12px;font-weight:700}.timeline-item h3,.timeline-item h2{margin-top:8px}.timeline-item p{margin-top:7px;color:var(--muted)}
.note-list{display:grid;gap:16px}.note-row{display:grid;grid-template-columns:90px 1fr;gap:18px;padding:20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}.note-label{color:var(--brand);font-weight:800}.note-row p{color:var(--muted)}
.prose{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}.prose+.prose{margin-top:18px}.prose h2,.prose h3{margin-bottom:10px}.prose p+p{margin-top:12px}.prose ul,.prose ol{margin:10px 0 0;padding-left:1.4em}.prose li+li{margin-top:7px}.prose a{color:var(--deep);text-decoration:underline;text-underline-offset:3px}
.index-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.index-item{padding:20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}.index-item small{color:var(--brand);font-weight:800}.index-item h2{margin-top:4px}.index-item p{margin-top:8px;color:var(--muted)}.index-item a{display:inline-flex;min-height:44px;align-items:center;margin-top:8px;margin-right:14px;color:var(--deep);font-weight:700}
.app-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:20px}.app-copy{padding:24px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.app-copy p+p{margin-top:12px}.app-icon-row{display:flex;align-items:center;gap:14px;margin-bottom:14px}.app-icon-box{width:48px;height:48px;border-radius:12px;background:var(--mist);border:1px solid var(--border);display:grid;place-items:center;overflow:hidden}.app-icon-box img{width:48px;height:48px;object-fit:contain}.faq-list{display:grid;gap:14px}.faq-card h2{font-size:16px}.faq-card p{margin-top:8px}
.site-footer{background:var(--deep);color:#E7F2FA;border-top:1px solid rgba(234,245,252,.28)}.footer-inner{padding:34px 0 calc(34px + env(safe-area-inset-bottom))}.footer-brand{color:#fff;margin-bottom:24px}.footer-brand .brand-fallback{color:#fff}.footer-brand strong,.footer-brand span{display:block}.footer-brand span{opacity:.78;font-size:12px}.footer-groups{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.footer-groups h2{color:#fff;font-size:13px;margin-bottom:9px}.footer-groups a{display:block;min-height:30px;color:#E7F2FA;font-size:13px;opacity:.9}.footer-note,.copyright{margin-top:24px;font-size:13px;color:#E7F2FA;opacity:.85}.copyright{margin-top:8px}
.site-overlay{position:fixed;z-index:1100;inset:0;background:rgba(16,42,61,.42);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}.drawer-open .site-overlay,.search-open .site-overlay{opacity:1;visibility:visible;pointer-events:auto}.site-drawer{position:fixed;z-index:1120;top:0;right:0;bottom:0;width:min(400px,86vw);background:var(--surface);box-shadow:-14px 0 36px rgba(27,74,110,.16);transform:translateX(102%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s ease}.drawer-open .site-drawer{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:72px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 18px;border-bottom:1px solid var(--border)}.drawer-scroll{height:calc(100% - 72px);overflow-y:auto;padding:16px 18px 28px}.drawer-group+.drawer-group{margin-top:22px}.drawer-group h2{font-size:13px;color:var(--soft);margin-bottom:7px}.drawer-group a{display:block;padding:11px 10px;border-radius:9px}.drawer-group a:hover{background:var(--mist)}.drawer-group strong{display:block;color:var(--title);font-size:14px}.drawer-group span{display:block;margin-top:2px;color:var(--muted);font-size:12px;line-height:1.55}.icon-button{min-height:44px;padding:0 12px;border:1px solid var(--border-strong);border-radius:9px;background:#fff;color:var(--deep)}
.search-layer{position:fixed;z-index:1110;top:calc(var(--topline) + var(--masthead));left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-8px);transition:.2s ease}.search-open .search-layer{visibility:visible;pointer-events:auto;opacity:1;transform:translateY(0)}.search-panel{width:min(760px,calc(100% - 32px));margin:12px auto 0;padding:22px;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:0 18px 50px rgba(27,74,110,.18)}.search-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.search-head h2{margin-top:2px}.search-form{margin-top:18px}.search-form label{display:block;margin-bottom:7px;color:var(--muted);font-size:13px}.search-row{display:grid;grid-template-columns:1fr auto;gap:10px}.search-row input{min-width:0;min-height:44px;padding:0 13px;border-radius:10px;border:1px solid var(--border-strong);background:var(--page);color:var(--text)}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.search-presets a{min-height:44px;display:inline-flex;align-items:center;padding:0 12px;border-radius:9px;background:var(--mist);color:var(--deep)}.mobile-bottom{display:none}
@media(max-width:900px){.grid-4,.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.policy-grid,.grid-3{grid-template-columns:1fr}.feature-split,.app-layout{grid-template-columns:1fr}.issue-list{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){:root{--tabs:0px}body{padding-bottom:calc(48px + env(safe-area-inset-bottom))}.topline-inner,.masthead-inner,.section-tabs-inner,.footer-inner,.page-shell{width:calc(100% - 32px)}.section-tabs{display:none}.site-main{padding-top:calc(var(--topline) + var(--masthead))}.masthead-inner{grid-template-columns:1fr auto auto;gap:8px}.drawer-button,.app-entry{min-height:44px;padding:0 11px}.page-shell{padding-top:24px;padding-bottom:52px}.page-hero,.cover-section,.prose{padding:20px}.cover-section{padding:16px}.cover-image{height:260px}.grid-2,.grid-3,.grid-4,.topic-grid,.policy-grid,.index-list{grid-template-columns:1fr}.issue-list{grid-template-columns:1fr 1fr}.shelf-item{grid-template-columns:42px 1fr}.shelf-arrow{grid-column:2}.note-row{grid-template-columns:1fr;gap:6px}.footer-groups{grid-template-columns:1fr 1fr;gap:20px 14px}.footer-inner{padding-bottom:calc(70px + env(safe-area-inset-bottom))}.mobile-bottom{position:fixed;z-index:970;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(--border);box-shadow:0 -8px 22px rgba(27,74,110,.08)}.mobile-bottom a{min-width:0;min-height:48px;display:flex;align-items:center;justify-content:center;color:var(--deep);font-size:12px}.mobile-bottom a.is-current{background:var(--brand);color:#fff}.drawer-open .mobile-bottom,.search-open .mobile-bottom{z-index:1050}.search-layer{inset:0;top:0;background:var(--deep);color:#fff;overflow-y:auto}.search-panel{width:100%;min-height:100%;margin:0;border:0;border-radius:0;background:var(--deep);box-shadow:none;padding:max(24px,env(safe-area-inset-top)) 16px 28px}.search-head h2,.search-layer .eyebrow{color:#fff}.search-layer .icon-button{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}.search-form label{color:#E7F2FA}.search-row{grid-template-columns:1fr}.search-row input{background:#fff;color:var(--text)}.search-presets a{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.16)}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.shelf-offset{margin-top:16px}.timeline-offset{margin-top:18px}.masthead .brand-fallback{font-size:16px}