:root{--bg:#F5FAFE;--deep:#E7F2FA;--card:#FFFFFF;--secondary:#D7EAF6;--title:#16324A;--text:#2A4156;--muted:#4E6A80;--soft:#6E8899;--brand:#4AA3E0;--bright:#6BB8EC;--navy:#1B4A6E;--mist:#EAF5FC;--line:rgba(74,163,224,.16);--line-strong:rgba(74,163,224,.42);--shadow:0 12px 28px rgba(27,74,110,.08);--radius:12px;--content:1120px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%;object-fit:contain;object-position:center}
.skip-link{position:fixed;left:16px;top:-60px;z-index:1200;background:#fff;color:var(--navy);padding:10px 14px;border-radius:8px;box-shadow:var(--shadow)}
.skip-link:focus{top:12px}
.top-shell{position:fixed;inset:0 0 auto;z-index:800}
.thinbar{height:22px;background:var(--navy);color:#fff;font-size:12px}
.shell-row{max-width:var(--content);margin:0 auto;padding:0 20px}
.thinbar-row,.magbar-row{display:flex;align-items:center;justify-content:space-between;height:100%}
.thin-brand{font-weight:700;letter-spacing:.08em}
.text-button,.drawer-trigger,.icon-button{border:0;background:transparent;color:inherit;min-height:44px;padding:0 12px;border-radius:9px}
.thinbar .text-button{min-height:22px;padding:0 6px;color:#fff;font-size:12px}
.magbar{height:60px;background:#fff;border-bottom:1px solid var(--line)}
.magbar-row{position:relative}
.brand-lockup,.app-link,.drawer-trigger{display:inline-flex;align-items:center;justify-content:center;min-height:44px}
.brand-logo,.footer-logo,.drawer-logo{height:28px;width:auto;max-width:150px;object-fit:contain}
.brand-text{font-size:16px;font-weight:800;color:var(--title)}
.drawer-trigger{position:absolute;left:50%;transform:translateX(-50%);color:var(--navy);font-weight:800;border:1px solid var(--line)}
.app-link{padding:0 14px;color:#fff;font-weight:800;border-radius:10px;background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%)}
.section-tabs{height:40px;background:var(--mist);border-bottom:1px solid var(--line)}
.tabs-inner{height:100%;display:flex;justify-content:center;align-items:center;gap:8px}
.tab-link{height:30px;min-width:82px;display:flex;align-items:center;justify-content:center;border-radius:9px;color:var(--navy);font-size:13px;font-weight:700}
.tab-link:hover,.tab-link:focus-visible{background:#fff}
.tab-link.is-current{background:var(--brand);color:#fff}
.site-main{padding:146px 20px 70px;min-height:65vh}
.page-shell{max-width:var(--content);margin:0 auto}
.page-head{padding:26px 0 22px;border-bottom:1px solid var(--line);margin-bottom:22px}
.eyebrow{margin:0 0 6px;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.08em}
h1,h2,h3,p{margin-top:0}
h1{margin-bottom:10px;color:var(--title);font-size:24px;line-height:1.3;letter-spacing:-.02em}
h2{color:var(--title);font-size:20px;line-height:1.4}
h3{color:var(--title);font-size:16px;line-height:1.5}
p{margin-bottom:14px}
.lead{max-width:820px;color:var(--muted);font-size:16px}
.section{margin:28px 0}
.section-title{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:14px}
.section-title p{margin:0;color:var(--soft);font-size:13px}
.card,.article-card,.note-card,.policy-block,.faq-item,.index-block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card,.article-card,.note-card,.policy-block,.index-block{padding:20px}
.grid-2,.grid-3,.grid-4{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))}
.media-slot{display:flex;align-items:center;justify-content:center;width:100%;background:var(--mist);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.media-180{height:180px}.media-200{height:200px}.media-260{height:260px}.media-app{height:min(360px,58vw)}
.hero-card{padding:0;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
.hero-copy{padding:24px}
.hero-kicker{font-size:16px;font-weight:800;color:var(--brand);letter-spacing:.06em}
.hero-actions,.inline-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 18px;border-radius:10px;font-size:14px;font-weight:800;border:1px solid transparent}
.btn-primary{color:#fff;background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%)}
.btn-secondary{background:#fff;color:var(--navy);border-color:var(--line-strong)}
.btn:hover{transform:translateY(-1px)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(74,163,224,.35);outline-offset:2px}
.number-list{counter-reset:item;display:grid;gap:12px}.number-list>article{position:relative;padding:18px 18px 18px 72px;background:#fff;border:1px solid var(--line);border-radius:12px}.number-list>article:before{counter-increment:item;content:counter(item,decimal-leading-zero);position:absolute;left:18px;top:16px;color:var(--brand);font-size:20px;font-weight:900}
.shelf{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.shelf a{display:block;min-height:118px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:12px}.shelf a:hover{border-color:var(--line-strong);box-shadow:var(--shadow)}
.timeline{position:relative;margin-left:9px;padding-left:26px;border-left:2px solid var(--secondary)}.timeline article{position:relative;margin:0 0 18px;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:12px}.timeline article:before{content:"";position:absolute;left:-35px;top:22px;width:14px;height:14px;background:var(--brand);border:3px solid var(--bg);border-radius:50%}.status{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;margin-bottom:8px;border-radius:999px;background:var(--mist);color:var(--navy);font-size:12px;font-weight:800}
.article-flow{max-width:860px}.article-flow h2{margin-top:30px}.article-flow h3{margin-top:22px}.article-flow ul{padding-left:20px}.article-flow li{margin-bottom:7px}
.data-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}.data-list li{padding:12px 14px;border-left:3px solid var(--brand);background:var(--mist);border-radius:0 9px 9px 0}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}.tag{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:999px;background:var(--mist);color:var(--navy);font-size:12px;font-weight:700}
.faq-item{padding:0;overflow:hidden}.faq-item h2{font-size:16px;margin:0;padding:18px 20px 8px}.faq-item p{margin:0;padding:0 20px 20px;color:var(--text)}
.site-footer{background:var(--navy);color:#E7F2FA;border-top:1px solid rgba(231,242,250,.18);padding:38px 20px 72px;font-size:13px}
.footer-inner{max-width:var(--content);margin:0 auto}.footer-brand{display:flex;align-items:center;gap:12px;padding-bottom:20px;border-bottom:1px solid rgba(231,242,250,.18)}.footer-brand strong{display:block;color:#fff;font-size:18px}.footer-brand span{display:block;color:#E7F2FA}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:24px 0}.footer-grid h2{color:#fff;font-size:14px;margin-bottom:8px}.footer-grid a{display:block;padding:4px 0;color:#E7F2FA}.footer-note{max-width:840px;color:#E7F2FA}.footer-bottom{display:flex;flex-wrap:wrap;gap:14px;padding-top:14px;border-top:1px solid rgba(231,242,250,.18)}
.overlay{position:fixed;inset:0;z-index:900;background:rgba(22,50,74,.35);opacity:0;pointer-events:none;transition:opacity .2s ease}.overlay.is-open{opacity:1;pointer-events:auto}.overlay[hidden]{display:block;visibility:hidden}.overlay.is-open[hidden]{visibility:visible}
.issue-drawer{position:fixed;z-index:960;right:0;top:0;width:min(400px,86vw);height:100dvh;background:#fff;transform:translateX(102%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s;box-shadow:-14px 0 36px rgba(27,74,110,.18);overflow:auto}.issue-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;z-index:3;display:flex;align-items:center;justify-content:space-between;min-height:72px;padding:12px 18px;background:#fff;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-groups{padding:10px 18px 28px}.drawer-groups section{padding:12px 0;border-bottom:1px solid var(--line)}.drawer-groups h2{margin:0 0 6px;color:var(--soft);font-size:12px;letter-spacing:.08em}.drawer-groups a{display:block;padding:10px;border-radius:10px}.drawer-groups a:hover{background:var(--mist)}.drawer-groups b{display:block;color:var(--title);font-size:14px}.drawer-groups span{display:block;color:var(--muted);font-size:12px;line-height:1.55}
.search-panel{position:fixed;z-index:950;left:0;right:0;top:122px;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .18s ease,visibility .18s}.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{max-width:760px;margin:14px auto;padding:22px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.search-head strong{font-size:18px;color:var(--title)}.search-head p{margin:4px 0 0;color:var(--muted)}.search-field{display:block;color:var(--soft);font-size:12px}.search-field input{display:block;width:100%;min-height:44px;margin-top:6px;padding:0 12px;border:1px solid var(--line-strong);border-radius:10px;background:#fff;color:var(--title)}.preset-links{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}.preset-links a{display:flex;align-items:center;justify-content:center;min-height:44px;border-radius:10px;background:var(--mist);color:var(--navy);font-weight:800}
.mobile-bottom{display:none}.ui-locked{overflow:hidden}
.empty-media{color:var(--soft);font-size:13px;text-align:center;padding:16px}
.callout{padding:18px 20px;border-radius:12px;background:var(--mist);border:1px solid var(--line);color:var(--navy)}
.definition-grid{display:grid;grid-template-columns:180px 1fr;gap:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}.definition-grid dt,.definition-grid dd{margin:0;padding:14px 16px;border-bottom:1px solid var(--line)}.definition-grid dt{background:var(--mist);font-weight:800;color:var(--title)}.definition-grid dd{background:#fff}.definition-grid dt:last-of-type,.definition-grid dd:last-of-type{border-bottom:0}
@media (max-width:860px){.grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.shelf{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.shell-row{padding:0 16px}.section-tabs{display:none}.top-shell{height:82px}.site-main{padding:104px 16px calc(82px + env(safe-area-inset-bottom))}.magbar{height:60px}.brand-logo{max-width:110px}.app-link{padding:0 10px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.shelf{grid-template-columns:1fr}.page-head{padding-top:16px}.hero-copy{padding:20px}.media-260{height:220px}.media-200{height:190px}.media-180{height:180px}.media-app{height:340px}.search-panel{inset:0;top:0;background:var(--navy);padding:18px;overflow:auto}.search-card{margin:76px auto 0;background:var(--navy);border-color:rgba(255,255,255,.2);color:#fff;box-shadow:none}.search-head strong,.search-head p,.search-field{color:#fff}.search-head .icon-button{color:#fff;border:1px solid rgba(255,255,255,.25)}.search-field input{background:#fff;color:var(--title)}.preset-links{grid-template-columns:repeat(2,1fr)}.preset-links a{background:#fff}.mobile-bottom{position:fixed;z-index:850;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,1fr);min-height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 22px rgba(27,74,110,.08)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;color:var(--navy);font-size:12px;font-weight:800}.mobile-bottom a.is-current{background:var(--brand);color:#fff}.site-footer{padding-bottom:calc(86px + env(safe-area-inset-bottom))}.definition-grid{grid-template-columns:1fr}.definition-grid dt{border-bottom:0;padding-bottom:6px}.definition-grid dd{padding-top:0}.footer-grid{grid-template-columns:1fr 1fr}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.issue-drawer,.search-panel,.overlay,.btn{transition:none}}

.app-mini-icon{width:48px;height:48px;object-fit:contain;object-position:center}
.thinbar .text-button{position:relative}
.thinbar .text-button::before{content:"";position:absolute;inset:-11px -8px}