:root{--bg:#fff;--deep-bg:#f5f7fa;--panel:#fff;--soft:#eef1f6;--title:#0a1628;--text:#1e2a3a;--muted:#4a5568;--faint:#718096;--blue:#0033a0;--bright:#0052cc;--navy:#002066;--line:rgba(0,51,160,.14);--shadow:0 12px 36px rgba(0,33,102,.08);--top:118px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:min(1220px,calc(100% - 32px));margin:0 auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:2000;background:#fff;color:var(--navy);padding:8px 12px;border:1px solid var(--blue)}.skip-link:focus{top:8px}.site-header{position:fixed;z-index:1200;left:0;right:0;top:0}.spine-line{height:18px;background:var(--navy);color:#fff;font-size:11px;line-height:18px}.spine-inner,.cover-inner,.tab-inner{display:flex;align-items:center}.spine-inner{height:18px;justify-content:space-between}.text-button{border:0;background:transparent;color:#fff;min-width:44px;height:18px;padding:0 4px;cursor:pointer;font-size:11px}.cover-bar{height:60px;background:#fff;border-bottom:1px solid var(--line)}.cover-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;gap:16px}.brand-link{justify-self:start;display:flex;align-items:center;min-height:44px;max-width:170px}.brand-logo,.catalog-logo,.footer-logo{height:34px;max-width:150px;width:auto;object-fit:contain;display:block}.brand-text{font-weight:900;font-size:24px;letter-spacing:.06em;color:var(--navy)}.catalog-open,.app-link{min-height:44px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-weight:700;cursor:pointer}.catalog-open{border:1px solid var(--line);background:#fff;color:var(--blue);padding:0 18px}.app-link{justify-self:end;color:#fff;background:linear-gradient(135deg,#0052cc 0%,#0033a0 50%,#002066 100%);padding:0 18px}.tab-bar{height:40px;background:var(--soft);border-bottom:1px solid var(--line)}.tab-inner{height:40px;gap:8px}.tab-link{height:30px;min-width:58px;padding:0 12px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;color:var(--navy);font-size:14px;font-weight:700}.tab-link.is-active{background:var(--blue);color:#fff}.site-main{padding-top:calc(var(--top) + 26px)}
.page-hero,.section{padding:36px 0}.page-hero{padding-top:26px}.page-hero .eyebrow,.eyebrow{color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.08em}.page-hero h1,.hero-copy h1{font-size:clamp(28px,3.3vw,32px);line-height:1.25;color:var(--title);margin:8px 0 14px}.lead{font-size:17px;color:var(--muted);max-width:860px;margin:0}.section:nth-of-type(even){background:var(--deep-bg)}.section-title{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-title h2{font-size:24px;line-height:1.25;margin:0;color:var(--title)}.section-title p{margin:0;color:var(--faint);font-size:14px}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.card-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow)}.card h3{margin:0 0 8px;font-size:19px;line-height:1.35;color:var(--title)}.card p{margin:0;color:var(--muted)}.card .card-link{display:inline-flex;align-items:center;min-height:44px;margin-top:12px;color:var(--blue);font-weight:800}.tag{display:inline-flex;align-items:center;min-height:28px;border-radius:8px;background:var(--blue);color:#fff;padding:2px 9px;font-size:12px;font-weight:800;margin-bottom:10px}.tag.alt{background:var(--navy)}.media-slot{width:100%;min-height:180px;max-height:300px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,#fff,#f5f7fa);display:flex;align-items:center;justify-content:center;overflow:hidden}.content-image{width:100%;height:100%;max-height:300px;object-fit:contain;object-position:center;display:block}.image-card .media-slot{height:210px;margin-bottom:14px}.image-card .content-image{max-height:210px}.hero-media .media-slot{min-height:180px;max-height:300px;aspect-ratio:16/9}.hero-media .content-image{max-height:300px}.hero-copy{padding:24px 0 12px}.hero-kicker{font-weight:900;color:var(--blue);letter-spacing:.08em}.hero-copy p{max-width:900px;color:var(--muted)}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.button-primary,.button-secondary{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:0 18px;font-weight:800}.button-primary{background:linear-gradient(135deg,#0052cc 0%,#0033a0 50%,#002066 100%);color:#fff}.button-secondary{background:#fff;color:var(--blue);border:1px solid var(--blue)}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.feature-tile{border-left:4px solid var(--bright);background:#fff;border-radius:12px;padding:16px 18px;min-height:118px;box-shadow:var(--shadow)}.feature-tile:nth-child(even){border-left-color:var(--navy)}.feature-tile h3{margin:0 0 6px;color:var(--title);font-size:17px}.feature-tile p{margin:0;color:var(--muted);font-size:14px}.feature-tile a{display:inline-flex;min-height:44px;align-items:center;color:var(--blue);font-weight:800}.split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:26px;align-items:center}.number-list{display:grid;gap:12px}.number-item{display:grid;grid-template-columns:64px 1fr;gap:14px;align-items:start;padding:16px;border:1px solid var(--line);border-radius:12px;background:#fff}.number{font-size:32px;line-height:1;color:var(--blue);font-weight:900}.number-item h3{margin:0 0 4px;color:var(--title)}.number-item p{margin:0;color:var(--muted)}.shelf-list{display:grid;gap:10px}.shelf-row{display:grid;grid-template-columns:150px 1fr auto;gap:18px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);background:#fff}.shelf-row strong{color:var(--title)}.shelf-row span{color:var(--muted)}.shelf-row a{min-height:44px;display:inline-flex;align-items:center;color:var(--blue);font-weight:800}.status-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.status-card{background:#fff;border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:12px;padding:18px}.status-card h3{margin:0 0 8px;color:var(--title)}.status-card p{margin:0;color:var(--muted)}.quote-box{border-left:4px solid var(--blue);padding:18px 20px;background:#fff;border-radius:0 12px 12px 0}.quote-box p{margin:0 0 8px}.quote-box small{color:var(--faint)}.prose{max-width:900px}.prose h2{font-size:23px;color:var(--title);margin:30px 0 10px}.prose h3{font-size:19px;color:var(--title);margin:22px 0 8px}.prose p{color:var(--text);margin:0 0 14px}.prose ul{padding-left:22px}.prose li{margin:8px 0}.notice{padding:16px 18px;border:1px solid var(--line);background:var(--soft);border-radius:12px;color:var(--muted)}.index-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.index-links a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}.index-links strong{display:block;color:var(--title);margin-bottom:4px}.index-links span{color:var(--muted);font-size:14px}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}.faq-item h2,.faq-item h3{margin:0 0 8px;color:var(--title);font-size:19px}.faq-item p{margin:0;color:var(--text)}
.site-footer{background:#0a1628;color:#a0aec0;padding:42px 0 calc(36px + env(safe-area-inset-bottom))}.footer-inner{display:grid;grid-template-columns:minmax(260px,1.1fr) minmax(0,2fr);gap:34px}.footer-brand p{max-width:460px}.footer-logo-row{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800}.footer-groups{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.footer-groups h2{font-size:15px;color:#fff;margin:0 0 8px}.footer-groups a{display:block;min-height:34px;color:#a0aec0}.footer-groups a:hover{color:#fff}.footer-bottom{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.12);padding-top:18px;font-size:13px}
.catalog-drawer,.search-panel{position:fixed;z-index:1500;left:0;right:0;top:78px;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px);transition:.18s ease}.catalog-drawer.is-open,.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.catalog-shell,.search-shell{background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);max-height:50vh;overflow:auto}.catalog-top,.search-head{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 18px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}.catalog-brand{display:flex;align-items:center;gap:12px}.icon-button{min-height:44px;border:1px solid var(--line);background:#fff;color:var(--blue);border-radius:10px;padding:0 14px;cursor:pointer}.catalog-groups{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;padding:18px}.catalog-group h2{margin:0 0 8px;color:var(--title);font-size:16px}.catalog-group a{display:block;padding:10px 0;border-bottom:1px solid var(--line)}.catalog-group strong{display:block;color:var(--navy)}.catalog-group span{display:block;color:var(--muted);font-size:13px}.search-shell{padding-bottom:18px}.search-label{display:block;padding:18px 18px 8px;color:var(--title);font-weight:800}.search-input{display:block;width:calc(100% - 36px);margin:0 18px;border:1px solid var(--line);min-height:48px;border-radius:10px;padding:0 14px;color:var(--title);background:#fff}.search-presets{display:flex;flex-wrap:wrap;gap:10px;padding:14px 18px 0}.search-presets a{display:inline-flex;align-items:center;min-height:44px;border:1px solid var(--line);border-radius:10px;padding:0 14px;color:var(--blue);font-weight:800}.page-overlay{position:fixed;inset:0;background:rgba(10,22,40,.45);z-index:1400;opacity:0;visibility:hidden;pointer-events:none;transition:.18s ease}.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.mobile-bottom{display:none}
a:hover{color:var(--bright)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(0,82,204,.35);outline-offset:2px}
@media (max-width:900px){.card-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:1fr}.status-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-inner{grid-template-columns:1fr}.footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-groups{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:700px){:root{--top:78px}.shell{width:min(100% - 32px,1220px)}.tab-bar{display:none}.cover-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:8px}.brand-link{max-width:110px}.brand-logo{max-width:108px;height:32px}.catalog-open,.app-link{padding:0 10px;font-size:14px}.site-main{padding-top:calc(var(--top) + 18px);padding-bottom:68px}.page-hero,.section{padding:28px 0}.card-grid,.card-grid.two,.card-grid.four,.feature-grid,.status-grid{grid-template-columns:1fr}.image-card .media-slot{height:200px}.shelf-row{grid-template-columns:1fr;gap:6px}.catalog-drawer,.search-panel{top:78px}.catalog-shell,.search-shell{width:100%;max-height:66vh;border-radius:0}.catalog-groups{grid-template-columns:1fr;padding:14px}.search-shell{background:var(--soft)}.mobile-bottom{position:fixed;z-index:1100;left:0;right:0;bottom:0;height:calc(50px + 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(--line)}.mobile-bottom a{min-height:50px;display:flex;align-items:center;justify-content:center;color:var(--navy);font-size:13px;font-weight:800}.mobile-bottom a.is-active{background:var(--blue);color:#fff}.site-footer{padding-bottom:calc(86px + env(safe-area-inset-bottom))}.number-item{grid-template-columns:52px 1fr}.number{font-size:28px}.index-links{grid-template-columns:1fr}}
@media (max-width:420px){.spine-brand{font-size:10px}.brand-text{font-size:20px}.catalog-open,.app-link{font-size:13px;padding:0 8px}.cover-inner{gap:5px}.footer-groups{grid-template-columns:1fr}.card{padding:17px}}