: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;--border:rgba(74,163,224,.16);--border-strong:rgba(74,163,224,.42);--shadow:0 12px 28px rgba(27,74,110,.08);--radius:12px;--topline:22px;--masthead:60px;--tabs:40px}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;overflow-x:hidden}body.lock-scroll{overflow:hidden}a{color:inherit;text-decoration:none}button,a{font:inherit}button{cursor:pointer}img{display:block;max-width:100%;height:auto}.shell{width:min(1120px,calc(100% - 32px));margin:0 auto}.topline{position:fixed;inset:0 0 auto 0;height:var(--topline);z-index:820;background:var(--navy);color:#fff;font-size:12px}.topline-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:#fff;min-width:44px;height:22px;padding:0 8px}.masthead{position:fixed;top:var(--topline);left:0;right:0;height:var(--masthead);z-index:810;background:#fff;border-bottom:1px solid var(--border)}.masthead-inner{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand-mark{justify-self:start;min-height:44px;display:flex;align-items:center}.brand-mark img,.footer-brand img,.drawer-brand img{height:28px;width:auto;object-fit:contain}.brand-fallback{font-size:16px;font-weight:800;color:var(--navy);letter-spacing:.08em}.drawer-trigger,.app-link,.icon-button{min-height:44px;border-radius:10px;border:1px solid var(--border-strong);background:#fff;color:var(--navy);padding:0 16px;font-size:14px;display:inline-flex;align-items:center;justify-content:center}.drawer-trigger{justify-self:center}.app-link{justify-self:end}.tabbar{position:fixed;top:calc(var(--topline) + var(--masthead));left:0;right:0;height:var(--tabs);z-index:800;background:var(--mist);border-bottom:1px solid var(--border)}.tabbar-inner{height:100%;display:flex;justify-content:center;align-items:center;gap:10px}.tab-link{min-width:88px;height:30px;padding:0 18px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:13px;color:var(--navy)}.tab-link.is-current{background:var(--brand);color:#fff}.site-main{padding-top:calc(var(--topline) + var(--masthead) + var(--tabs));min-height:70vh}.page-hero{padding:46px 0 28px}.eyebrow{margin:0 0 10px;font-size:13px;color:var(--brand);font-weight:700;letter-spacing:.08em}.page-hero h1,.cover-copy h1{margin:0;color:var(--title);font-size:24px;line-height:1.3}.lead{margin:16px 0 0;max-width:820px;color:var(--muted)}.section{padding:26px 0}.section.alt{background:var(--deep);border-block:1px solid var(--border)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-head h2{margin:0;color:var(--title);font-size:20px}.section-head p{margin:0;color:var(--soft);font-size:13px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card h3{font-size:16px;line-height:1.4;color:var(--title);margin:0 0 10px}.card p{margin:0 0 12px}.card p:last-child{margin-bottom:0}.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{width:100%;background:var(--mist);border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:150px}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-slot.banner{height:260px}.media-slot.thumb{height:180px}.media-slot.medium{height:200px}.media-slot.tall{height:340px}.cover{padding:28px 0}.cover-copy{padding:24px 0 8px;text-align:left}.cover-copy .brand-line{color:var(--brand);font-weight:700;margin-bottom:6px}.cover-copy p{max-width:820px;margin:14px 0 18px}.actions{display:flex;flex-wrap:wrap;gap:10px}.btn{height:42px;min-width:120px;padding:0 18px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}.btn.primary{color:#fff;background:linear-gradient(135deg,#6BB8EC 0%,#4AA3E0 55%,#1B4A6E 100%);border:1px solid transparent}.btn.secondary{background:#fff;border:1px solid var(--border-strong);color:var(--navy)}.btn:hover,.tab-link:hover,.footer-links a:hover,.drawer-body a:hover,.search-presets a:hover{filter:brightness(.98);transform:translateY(-1px)}a:focus-visible,button:focus-visible{outline:3px solid rgba(74,163,224,.34);outline-offset:2px}.number-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.number-card{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}.number-card b,.big-num{display:block;color:var(--brand);font-size:22px;line-height:1;margin-bottom:10px}.shelf-list{display:grid;gap:10px}.shelf-item{display:grid;grid-template-columns:84px 1fr auto;gap:16px;align-items:center;padding:14px 16px;background:#fff;border:1px solid var(--border);border-radius:12px}.shelf-item .label{color:var(--brand);font-weight:800}.shelf-item p{margin:0;color:var(--muted)}.shelf-item a{font-size:13px;color:var(--navy);font-weight:700}.observe-list{display:grid;gap:12px}.observe-item{display:grid;grid-template-columns:56px 1fr;gap:14px;align-items:start;padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}.observe-item .big-num{font-size:26px;margin:2px 0 0}.timeline{position:relative;display:grid;gap:14px;margin-left:8px}.timeline:before{content:"";position:absolute;left:13px;top:12px;bottom:12px;width:2px;background:var(--secondary)}.timeline-item{position:relative;padding-left:48px}.timeline-item:before{content:"";position:absolute;left:6px;top:11px;width:16px;height:16px;border-radius:50%;background:var(--brand);border:4px solid var(--mist)}.timeline-item .card{box-shadow:none}.status{display:inline-flex;min-height:28px;padding:0 10px;border-radius:999px;align-items:center;background:var(--mist);color:var(--navy);font-size:12px;font-weight:700}.note-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.app-panel{display:grid;grid-template-columns:minmax(0,360px) 1fr;gap:24px;align-items:center}.app-icon-row{display:flex;align-items:center;gap:14px;margin-bottom:14px}.icon-slot{width:48px;height:48px;min-width:48px;border-radius:12px}.rich-text p{margin:0 0 14px}.rich-text h2{font-size:20px;line-height:1.4;color:var(--title);margin:28px 0 12px}.rich-text h3{font-size:16px;color:var(--title);margin:22px 0 10px}.rich-text ul{padding-left:20px;margin:10px 0 18px}.article-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.entry-list{display:grid;gap:14px}.entry{padding:20px;border-left:4px solid var(--brand);background:#fff;border-radius:0 12px 12px 0;border-top:1px solid var(--border);border-right:1px solid var(--border);border-bottom:1px solid var(--border)}.entry h2,.entry h3{margin:0 0 8px;color:var(--title)}.entry p{margin:0}.gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.gallery-card .media-slot{height:210px;margin-bottom:14px}.shelf-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.big-number-list{display:grid;gap:14px}.big-number-row{display:grid;grid-template-columns:72px 1fr;gap:16px;padding:20px;background:#fff;border:1px solid var(--border);border-radius:12px}.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.method-steps{counter-reset:method;display:grid;gap:14px}.method-step{counter-increment:method;padding:20px 20px 20px 68px;position:relative;background:#fff;border:1px solid var(--border);border-radius:12px}.method-step:before{content:counter(method,decimal-leading-zero);position:absolute;left:20px;top:18px;color:var(--brand);font-size:22px;font-weight:800}.index-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.index-grid .card a{color:var(--navy);font-weight:700;display:inline-flex;min-height:44px;align-items:center}.terms{display:grid;gap:14px}.terms .card{box-shadow:none}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px}.faq-item h2{font-size:16px;margin:0 0 8px;color:var(--title)}.faq-item p{margin:0}.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.site-footer{background:var(--navy);color:#E7F2FA;border-top:1px solid rgba(234,245,252,.35);padding:34px 0 74px}.footer-top{display:grid;grid-template-columns:220px 1fr;gap:28px}.footer-brand{display:flex;gap:12px;align-items:flex-start}.footer-brand>div{display:flex;flex-direction:column}.footer-brand span{font-size:12px;opacity:.82}.footer-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.footer-links h2{font-size:13px;margin:0 0 8px;color:#fff}.footer-links a{display:block;font-size:13px;color:#E7F2FA;padding:4px 0}.footer-note{border-top:1px solid rgba(234,245,252,.2);margin-top:24px;padding-top:18px;font-size:13px;color:#D7EAF6}.footer-note p{margin:0 0 8px}.overlay{position:fixed;inset:0;z-index:900;background:rgba(22,50,74,.38);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.drawer{position:fixed;z-index:1000;top:0;right:0;bottom:0;width:min(400px,86vw);background:#fff;transform:translateX(102%);transition:transform .24s ease;visibility:hidden;pointer-events:none;box-shadow:-20px 0 50px rgba(27,74,110,.14);display:flex;flex-direction:column}.drawer.is-open{transform:translateX(0)}.drawer-head{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--navy)}.drawer-body{overflow:auto;padding:16px 18px 32px}.drawer-body section{margin-bottom:18px}.drawer-body h2{font-size:13px;color:var(--soft);margin:0 0 8px}.drawer-body a{display:block;padding:12px;border-radius:10px;border:1px solid transparent}.drawer-body a:hover{background:var(--mist);border-color:var(--border)}.drawer-body strong{display:block;color:var(--title);font-size:14px}.drawer-body span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:3px}.search-layer{position:fixed;z-index:950;top:calc(var(--topline) + var(--masthead));left:0;right:0;visibility:hidden;pointer-events:none}.search-layer.is-open{visibility:visible;pointer-events:auto}.search-card{width:min(760px,calc(100% - 32px));margin:12px auto 0;background:#fff;border:1px solid var(--border-strong);border-radius:14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;justify-content:space-between;align-items:center}.search-card p{color:var(--muted)}.search-presets{display:flex;flex-wrap:wrap;gap:10px}.search-presets a{min-height:40px;padding:0 16px;border-radius:9px;background:var(--mist);color:var(--navy);display:inline-flex;align-items:center}.mobile-nav{display:none}.muted{color:var(--muted)}.mini-list{display:grid;gap:8px;margin:0;padding:0;list-style:none}.mini-list li{padding:12px 14px;background:var(--mist);border-radius:10px}.callout{padding:18px 20px;border:1px solid var(--border-strong);border-radius:12px;background:var(--mist);color:var(--navy)}.spacer-top{margin-top:16px}
@media(max-width:900px){.grid-4,.index-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3,.note-strip{grid-template-columns:1fr 1fr}.app-panel,.article-grid{grid-template-columns:1fr}.app-panel .media-slot.tall{height:300px}.footer-top{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}.number-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){:root{--tabs:0px}.shell{width:calc(100% - 32px)}.tabbar{display:none}.site-main{padding-top:calc(var(--topline) + var(--masthead));padding-bottom:68px}.masthead-inner{grid-template-columns:minmax(64px,1fr) auto minmax(76px,1fr);gap:6px}.brand-mark img{max-width:104px}.drawer-trigger,.app-link{padding:0 10px}.page-hero{padding:32px 0 18px}.cover{padding-top:18px}.media-slot.banner{height:260px}.grid-2,.grid-3,.grid-4,.note-strip,.gallery-grid,.shelf-grid,.note-grid,.contact-grid,.index-grid{grid-template-columns:1fr}.number-grid{grid-template-columns:1fr 1fr}.shelf-item{grid-template-columns:54px 1fr}.shelf-item a{grid-column:2}.app-panel .media-slot.tall{height:320px}.footer-links{grid-template-columns:1fr 1fr}.site-footer{padding-bottom:88px}.search-layer{inset:0;background:var(--navy);color:#fff;top:0}.search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;background:var(--navy);color:#fff;padding:24px 16px}.search-head strong,.search-card p{color:#fff}.search-card .icon-button{background:transparent;color:#fff;border-color:rgba(255,255,255,.38)}.search-presets{display:grid;grid-template-columns:1fr 1fr}.search-presets a{background:#fff;color:var(--navy);justify-content:center}.mobile-nav{position:fixed;z-index:700;left:0;right:0;bottom:0;height:calc(48px + 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-nav a{display:flex;align-items:center;justify-content:center;min-width:0;font-size:12px;color:var(--navy)}.mobile-nav a.is-current{background:var(--brand);color:#fff}.big-number-row{grid-template-columns:52px 1fr}.footer-brand{align-items:center}}
@media(max-width:430px){.number-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr}.page-hero h1,.cover-copy h1{font-size:23px}.section{padding:22px 0}.card{padding:17px}.shelf-item{grid-template-columns:46px 1fr;gap:10px}.observe-item{grid-template-columns:48px 1fr}.drawer{width:86vw}}