:root{--bg:#F3F6F9;--paper:#FFFFFF;--soft:#E8EEF5;--ink:#0B1220;--text:#1E293B;--muted:#475569;--hint:#64748B;--blue:#2563EB;--blue2:#60A5FA;--blue3:#1D4ED8;--lime:#65A30D;--slate:#334155;--border: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}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;line-height:1.75;overflow-x:hidden}body.is-locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.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:50}.status-bar{height:32px;background:var(--slate);color:#fff}.status-inner,.command-inner,.tab-inner{height:100%;display:flex;align-items:center}.status-inner{justify-content:space-between;font-size:13px}.status-brand{font-weight:750;letter-spacing:.02em}.icon-text-button{border:0;background:transparent;color:#fff;min-height:32px;padding:0 4px;cursor:pointer}.command-bar{height:60px;background:rgba(255,255,255,.98);border-bottom:1px solid var(--border)}.command-inner{display:grid;grid-template-columns:120px 1fr 120px;gap:12px}.square-menu{width:44px;height:44px;border:1px solid var(--border);background:var(--paper);border-radius:12px;color:var(--ink);cursor:pointer;font-size:24px;display:grid;place-items:center}.brand-mark{justify-self:center;display:flex;align-items:center;justify-content:center;height:44px;min-width:130px;font-weight:900;font-size:22px;color:var(--ink);letter-spacing:.02em}.brand-mark img{max-height:32px;max-width:180px;width:auto}.app-link{justify-self:end;min-height:44px;padding:0 18px;border-radius:999px;background:linear-gradient(135deg,var(--blue2) 0%,var(--blue) 52%,var(--blue3) 100%);color:#fff;display:inline-flex;align-items:center;font-weight:750}.tabs-bar{height:44px;background:#fff;border-bottom:1px solid rgba(51,65,85,.12)}.tab-inner{justify-content:center;gap:34px}.tab-inner a{height:44px;display:flex;align-items:center;position:relative;color:var(--muted);font-weight:680}.tab-inner a:hover,.tab-inner a:focus-visible{color:var(--blue)}.tab-inner a.is-current{color:var(--blue)}.tab-inner a.is-current:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--blue);border-radius:99px}
.site-main{padding-top:164px;min-height:70vh}.page-head{padding:52px 0 30px}.eyebrow{margin:0 0 9px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.page-head h1,.hero-copy h1{margin:0;color:var(--ink);line-height:1.18;font-size:clamp(28px,4vw,32px);letter-spacing:-.03em}.lead{max-width:780px;margin:16px 0 0;color:var(--muted);font-size:17px}.section{padding:26px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-title h2{margin:0;color:var(--ink);font-size:24px;line-height:1.28}.section-title p{margin:0;color:var(--hint);max-width:620px}.paper{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{display:grid;grid-template-columns:1fr;gap:24px;padding:30px}.hero-copy p{max-width:820px;margin:16px 0 0;color:var(--muted)}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.btn{min-height:44px;padding:0 20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-weight:780;border:1px solid var(--border)}.btn-primary{background:linear-gradient(135deg,var(--blue2) 0%,var(--blue) 52%,var(--blue3) 100%);color:#fff;border-color:transparent}.btn-secondary{background:#fff;color:var(--blue)}.media-slot,.media-placeholder,img.media-cover{width:100%;max-height:340px;border-radius:16px;overflow:hidden}.media-slot img,img.media-cover{display:block;width:100%;height:auto;max-height:340px;object-fit:contain;background:var(--soft)}.media-placeholder{min-height:220px;background:linear-gradient(135deg,#edf3fa,#dce8f6);display:grid;place-items:center;color:var(--blue);font-weight:900;letter-spacing:.12em}.media-placeholder span{opacity:.75}.wide-media{max-height:340px}
.topic-strips{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-strip{padding:16px 18px;background:#fff;border:1px solid var(--border);border-radius:14px;display:grid;grid-template-columns:16px 1fr auto;align-items:center;gap:12px}.dot{width:8px;height:8px;border-radius:50%;background:var(--blue)}.topic-strip strong{color:var(--ink)}.topic-strip span{font-size:14px;color:var(--muted)}.topic-strip em{font-style:normal;color:var(--blue);font-size:14px}
.number-story{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}.number-story article{padding:20px}.big-num{font-size:34px;line-height:1;color:var(--blue);font-weight:900}.number-story h3{margin:12px 0 8px;color:var(--ink);font-size:18px}.number-story p{margin:0;color:var(--muted);font-size:15px}.three-grid,.four-grid,.career-grid,.service-grid{display:grid;gap:16px}.three-grid{grid-template-columns:repeat(3,1fr)}.four-grid{grid-template-columns:repeat(4,1fr)}.career-grid{grid-template-columns:repeat(3,1fr)}.service-grid{grid-template-columns:repeat(2,1fr)}.content-card{padding:18px}.content-card h3{margin:14px 0 8px;color:var(--ink)}.content-card p{margin:0;color:var(--muted)}.content-card .media-placeholder{min-height:150px}.content-card img{width:100%;height:auto;max-height:210px;object-fit:cover;border-radius:14px;background:var(--soft)}
.stacked-feature{display:grid;gap:16px}.feature-row{display:grid;grid-template-columns:220px 1fr;gap:22px;align-items:center;padding:20px}.feature-row .media-placeholder{min-height:150px}.feature-row img{width:100%;height:auto;max-height:190px;border-radius:14px;object-fit:cover}.feature-row h3{margin:0 0 8px;color:var(--ink)}.feature-row p{margin:0;color:var(--muted)}
.file-list{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.file-row{display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:14px;align-items:center;padding:16px 18px;border-bottom:1px solid rgba(51,65,85,.1)}.file-row:last-child{border-bottom:0}.file-icon{width:36px;height:36px;border-radius:10px;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-weight:900}.file-row strong{color:var(--ink)}.file-row p{margin:3px 0 0;color:var(--muted);font-size:14px}.file-row a{color:var(--blue);font-weight:700}
.meter-list{display:grid;gap:12px}.meter-item{display:grid;grid-template-columns:86px 1fr;gap:18px;align-items:start;padding:18px}.meter-item .big-num{font-size:50px}.meter-item h3{margin:0 0 5px;color:var(--ink)}.meter-item p{margin:0;color:var(--muted)}
.timeline{position:relative;margin-left:10px;padding-left:28px;border-left:2px solid rgba(37,99,235,.2);display:grid;gap:18px}.timeline article{position:relative;padding:18px}.timeline article:before{content:"";position:absolute;left:-38px;top:24px;width:14px;height:14px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 6px var(--bg)}.status-tag{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;background:var(--soft);color:var(--blue);font-weight:800;font-size:13px}.timeline h3{margin:10px 0 6px;color:var(--ink)}.timeline p{margin:0;color:var(--muted)}
.longform{padding:26px}.longform h2{margin:0 0 12px;color:var(--ink);font-size:22px}.longform h3{margin:26px 0 9px;color:var(--ink);font-size:18px}.longform p{margin:0 0 14px;color:var(--text)}.longform .editor-note{padding:14px 16px;border-left:4px solid var(--blue);background:var(--soft);color:var(--muted);border-radius:0 12px 12px 0}.index-list{display:grid;gap:10px}.index-list a{display:flex;justify-content:space-between;gap:20px;align-items:center;min-height:58px;padding:12px 16px;background:#fff;border:1px solid var(--border);border-radius:14px}.index-list strong{color:var(--ink)}.index-list span{color:var(--muted);font-size:14px;text-align:right}.index-list a:after{content:"→";color:var(--blue)}
.directory-list{display:grid;gap:10px}.directory-row{display:grid;grid-template-columns:78px 1fr auto;gap:18px;align-items:center;padding:16px 18px}.directory-row .num{font-weight:900;color:var(--blue);font-size:24px}.directory-row h3{margin:0;color:var(--ink)}.directory-row p{margin:4px 0 0;color:var(--muted)}.directory-row a{color:var(--blue);font-weight:750}.type-index{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 0}.type-index a{min-height:40px;padding:0 14px;display:inline-flex;align-items:center;border-radius:999px;border:1px solid var(--border);background:#fff;color:var(--blue);font-weight:700}.serial-guides{display:grid;gap:12px}.serial-guide{padding:18px;display:grid;grid-template-columns:100px 1fr;gap:18px}.serial-guide strong{color:var(--blue)}.serial-guide h3{margin:0 0 6px;color:var(--ink)}.serial-guide p{margin:0;color:var(--muted)}
.phone-layout{display:grid;grid-template-columns:minmax(240px,360px) 1fr;gap:30px;align-items:center;padding:24px}.phone-layout img{width:100%;height:auto;max-height:520px;object-fit:contain}.phone-layout .media-placeholder{min-height:420px}.phone-layout h2{margin:0 0 12px;color:var(--ink)}.phone-layout p{margin:0 0 14px}.badge-row{display:flex;align-items:center;gap:14px;margin-top:14px}.badge-row img{width:54px;height:54px;object-fit:contain}.badge-row .media-placeholder{width:54px;min-height:54px;border-radius:12px}
.faq-list{display:grid;gap:12px}.faq-item{padding:20px}.faq-item h2{font-size:18px;margin:0 0 8px;color:var(--ink)}.faq-item p{margin:0;color:var(--text)}
.notice{padding:18px 20px;border:1px solid var(--border);border-radius:14px;background:var(--soft);color:var(--muted)}
.site-footer{margin-top:64px;background:var(--ink);color:#D6E4FF;padding:46px 0 34px}.footer-brand{display:flex;align-items:center;gap:14px}.footer-brand img{max-height:34px;max-width:160px}.footer-brand strong{display:block;font-size:22px;color:#fff}.footer-brand span{font-size:13px;color:#9fb7dc}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:32px}.footer-groups h2{font-size:14px;color:#fff;margin:0 0 12px}.footer-groups a{display:block;color:#c8d8f2;margin:7px 0;font-size:14px}.footer-groups a:hover,.footer-groups a:focus-visible{color:#fff;text-decoration:underline}.footer-note{margin:30px 0 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);color:#b8c9e2}.copyright{margin:10px 0 0;color:#8fa6c8;font-size:13px}
.site-overlay{position:fixed;inset:0;background:rgba(11,18,32,.42);opacity:0;visibility:hidden;pointer-events:none;transition:.2s;z-index:70}.site-overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}.mega-menu{position:fixed;inset:0;background:var(--bg);z-index:80;transform:translateY(-16px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s;overflow:auto}.mega-menu.is-visible{transform:none;opacity:1;visibility:visible;pointer-events:auto}.mega-shell{padding:24px 0 46px}.mega-head{display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:rgba(243,246,249,.96);padding:8px 0 18px;z-index:2}.mega-brand{display:flex;align-items:center;gap:12px;font-size:22px;color:var(--ink)}.mega-brand img{max-height:32px;max-width:170px}.close-button{min-height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--border);background:#fff;color:var(--blue);font-weight:750;cursor:pointer}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.mega-grid section{background:#fff;border:1px solid var(--border);border-radius:18px;padding:16px}.mega-grid h2{margin:0 0 8px;font-size:14px;color:var(--hint)}.mega-grid a{display:block;padding:12px;border-radius:12px}.mega-grid a:hover,.mega-grid a:focus-visible{background:var(--soft)}.mega-grid strong{display:block;color:var(--ink)}.mega-grid span{display:block;margin-top:3px;color:var(--muted);font-size:13px;line-height:1.55}
.search-layer{position:fixed;top:92px;left:0;right:0;z-index:85;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-visible{opacity:1;visibility:visible;pointer-events:auto}.search-card{width:min(calc(100% - 32px),760px);margin:14px auto 0;background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between;color:var(--ink)}.search-field{display:block;margin-top:14px}.search-field input{width:100%;height:52px;border:1px solid rgba(51,65,85,.2);border-radius:14px;background:var(--bg);padding:0 16px;color:var(--ink);outline:none}.search-field input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.12)}.search-card p{color:var(--muted);font-size:14px}.search-presets{display:flex;flex-wrap:wrap;gap:8px}.search-presets a{min-height:40px;padding:0 13px;border-radius:999px;border:1px solid var(--border);display:inline-flex;align-items:center;color:var(--blue);background:#fff}
.mobile-bottom{display:none}.square-menu:hover,.square-menu:focus-visible,.app-link:focus-visible,.btn:focus-visible,.close-button:focus-visible,.search-presets a:focus-visible,.topic-strip:focus-within{outline:3px solid rgba(37,99,235,.2);outline-offset:2px}
@media(max-width:900px){.number-story{grid-template-columns:repeat(2,1fr)}.three-grid,.career-grid{grid-template-columns:1fr 1fr}.four-grid{grid-template-columns:1fr 1fr}.phone-layout{grid-template-columns:280px 1fr}.mega-grid{grid-template-columns:repeat(2,1fr)}.footer-groups{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.shell{width:min(calc(100% - 32px),var(--max))}.tabs-bar{display:none}.site-main{padding-top:116px}.command-inner{grid-template-columns:54px 1fr 96px;gap:4px}.brand-mark{min-width:0;font-size:20px}.app-link{padding:0 12px;font-size:14px}.hero-card{padding:20px}.topic-strips{grid-template-columns:1fr}.number-story,.three-grid,.four-grid,.career-grid,.service-grid{grid-template-columns:1fr}.feature-row,.phone-layout{grid-template-columns:1fr}.phone-layout .media-placeholder{min-height:260px}.feature-row{gap:16px}.directory-row{grid-template-columns:54px 1fr}.directory-row>a{grid-column:2}.serial-guide{grid-template-columns:1fr}.file-row{grid-template-columns:42px 1fr}.file-row>a{grid-column:2}.footer-groups{grid-template-columns:repeat(2,1fr);gap:18px}.mega-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mega-grid section{padding:10px}.mega-grid a{padding:10px 8px}.search-layer{inset:0;top:0;background:var(--bg);overflow:auto}.search-card{width:100%;min-height:100%;margin:0;border:0;border-radius:0;box-shadow:none;padding:24px 16px 90px}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:60;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--hint);min-height:50px}.mobile-bottom a.is-current{color:var(--blue);font-weight:800}.site-footer{padding-bottom:calc(82px + env(safe-area-inset-bottom))}.meter-item{grid-template-columns:66px 1fr}.meter-item .big-num{font-size:42px}.page-head{padding-top:34px}.topic-strip{grid-template-columns:16px 1fr}.topic-strip em{grid-column:2}.actions .btn{flex:1 1 160px}}
@media(max-width:420px){.mega-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mega-grid span{font-size:12px}.footer-groups{grid-template-columns:1fr 1fr}.hero-copy h1{font-size:28px}.section-title{display:block}.section-title p{margin-top:8px}.command-inner{grid-template-columns:50px 1fr 92px}.app-link{font-size:13px;padding:0 10px}}