*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#EEF5FB;color:#243848;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:16px;line-height:1.76;overflow-x:hidden}body.is-locked{overflow:hidden}a{color:#1E6FB8;text-decoration:none}a:hover{color:#10263A}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(59,159,224,.38);outline-offset:2px}button,input{font:inherit}.site-shell{position:fixed;z-index:1000;inset:0 0 auto;background:#EEF5FB;box-shadow:0 8px 24px rgba(16,38,58,.05)}.window-strip{height:22px;background:#1E6FB8;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100vw - 1220px)/2));font-size:12px}.window-brand,.strip-search{color:#fff}.window-brand:hover{color:#fff}.strip-search{border:0;background:transparent;min-width:44px;height:22px;cursor:pointer}.viewport-bar{height:70px;background:#fff;border-bottom:1px solid rgba(30,111,184,.16);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;padding:0 max(16px,calc((100vw - 1220px)/2))}.brand-lockup{justify-self:start;display:flex;align-items:center;min-height:44px}.brand-logo{display:block;max-height:36px;width:auto;max-width:210px;object-fit:contain}.brand-fallback{font-weight:800;font-size:22px;color:#10263A;letter-spacing:.02em}.tool-trigger{justify-self:center;min-height:44px;padding:0 20px;border:1px solid rgba(30,111,184,.22);border-radius:10px;background:#EEF5FB;color:#10263A;cursor:pointer;font-weight:700}.tool-trigger:hover{background:#D7E8F4}.app-link{justify-self:end;display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:10px;color:#fff;background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);font-weight:700}.app-link:hover{color:#fff;filter:brightness(.97)}.tab-rail{height:44px;background:#A9D6F2;border-bottom:1px solid rgba(30,111,184,.28)}.tab-rail-inner{width:min(1220px,calc(100% - 32px));height:100%;margin:0 auto;display:flex;align-items:center;gap:8px;overflow:hidden}.tab-link{display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:8px;color:#10263A;font-size:14px;font-weight:700;white-space:nowrap}.tab-link:hover{background:rgba(255,255,255,.7)}.tab-link.is-current{background:#3B9FE0;color:#fff}.site-main{padding-top:160px;min-height:70vh}.container{width:min(1220px,calc(100% - 32px));margin:0 auto}.page-hero{padding:34px 0 24px}.page-hero-inner{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:30px;align-items:center}.page-kicker,.eyebrow{display:inline-block;color:#1E6FB8;font-size:13px;letter-spacing:.12em;font-weight:800}.page-hero h1,.home-copy h1{margin:8px 0 14px;color:#10263A;line-height:1.22;font-size:clamp(28px,3vw,32px)}.lead{font-size:17px;color:#425E72;max-width:760px}.hero-actions,.section-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}.btn-primary,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:10px;font-weight:800}.btn-primary{background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);color:#fff}.btn-primary:hover{color:#fff}.btn-secondary{background:#fff;border:1px solid #1E6FB8;color:#1E6FB8}.media-slot{width:100%;height:220px;border-radius:14px;background:#E3EEF7;border:1px solid rgba(30,111,184,.16);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.media-placeholder{background:linear-gradient(145deg,#EEF5FB,#D7E8F4);color:#1E6FB8;font-weight:800;padding:22px;text-align:center}.media-slot.banner-slot{height:min(300px,42vw);min-height:210px}.media-slot.card-media{height:200px}.media-slot.app-media{height:420px;max-height:65vw}.content-section{padding:28px 0}.section-shell{background:#fff;border:1px solid rgba(30,111,184,.16);box-shadow:0 16px 40px rgba(16,38,58,.08);border-radius:16px;padding:clamp(22px,3vw,34px)}.section-title{margin:0 0 8px;font-size:24px;line-height:1.3;color:#10263A}.section-intro{margin:0 0 20px;color:#5A7388}.prose p{margin:0 0 1em}.prose p:last-child{margin-bottom:0}.grid-2,.grid-3,.grid-4,.grid-6{display:grid;gap:18px}.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))}.grid-6{grid-template-columns:repeat(3,minmax(0,1fr))}.info-card,.topic-card,.manual-card,.index-card,.app-feature,.term-card{border:1px solid rgba(30,111,184,.16);background:#fff;border-radius:14px;padding:20px;min-width:0}.info-card h3,.topic-card h3,.manual-card h3,.index-card h3,.app-feature h3,.term-card h3{margin:0 0 8px;color:#10263A;font-size:18px}.info-card p,.topic-card p,.manual-card p,.index-card p,.app-feature p,.term-card p{margin:0;color:#5A7388}.topic-card .topic-mark{display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:30px;padding:0 9px;border-radius:8px;margin-bottom:12px;background:#62B7EE;color:#fff;font-size:12px;font-weight:800}.topic-card:nth-child(even) .topic-mark{background:#2FA8A0}.home-cover{padding:28px 0 22px}.home-copy{max-width:820px;padding:24px 0 0}.home-subtitle{color:#1E6FB8;font-weight:800;margin-bottom:4px}.home-copy .brand-line{font-size:15px;color:#5A7388;margin:0}.number-list{counter-reset:item;display:grid;gap:12px}.number-item{display:grid;grid-template-columns:58px 1fr;gap:16px;align-items:start;padding:16px 0;border-top:1px solid rgba(30,111,184,.16)}.number-item:first-child{border-top:0}.number{font-size:30px;line-height:1;color:#1E6FB8;font-weight:900;letter-spacing:-.04em}.number-item h3{margin:0 0 4px;color:#10263A}.number-item p{margin:0;color:#5A7388}.view-card{overflow:hidden}.view-card .media-slot{border-radius:12px;margin-bottom:16px}.view-card p{color:#5A7388}.directory-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.directory-row{display:flex;gap:12px;padding:14px 0;border-top:1px solid rgba(30,111,184,.16)}.directory-row:first-child,.directory-row:nth-child(2){border-top:0}.directory-row b{color:#1E6FB8;min-width:32px}.theme-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.theme-block{min-height:150px;border-radius:14px;padding:20px;background:#D7E8F4;border:1px solid rgba(30,111,184,.16);display:flex;flex-direction:column;justify-content:space-between}.theme-block:nth-child(2n){background:#E6F4F1}.theme-block h3{margin:0;color:#10263A}.theme-block p{margin:10px 0;color:#425E72}.shelf-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.shelf-item{background:#fff;border:1px solid rgba(30,111,184,.16);border-left:4px solid #3B9FE0;border-radius:10px;padding:16px}.shelf-item h3{margin:0 0 4px;font-size:17px;color:#10263A}.shelf-item p{margin:0;color:#5A7388}.big-rank{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.rank-item{padding:18px;border-radius:14px;background:#fff;border:1px solid rgba(30,111,184,.16)}.rank-no{display:block;font-size:36px;line-height:1;color:#1E6FB8;font-weight:900}.rank-item h3{margin:10px 0 6px;font-size:17px;color:#10263A}.rank-item p{margin:0;color:#5A7388;font-size:14px}.timeline{position:relative;margin-left:10px;padding-left:28px}.timeline:before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:#A9D6F2}.timeline-node{position:relative;padding:0 0 24px}.timeline-node:last-child{padding-bottom:0}.timeline-node:before{content:"";position:absolute;left:-28px;top:8px;width:12px;height:12px;border-radius:50%;background:#1E6FB8;border:3px solid #EEF5FB}.status{display:inline-flex;padding:3px 9px;border-radius:8px;background:#D7E8F4;color:#1E6FB8;font-size:12px;font-weight:800}.timeline-node h3{margin:8px 0 4px;color:#10263A}.timeline-node p{margin:0;color:#5A7388}.note-callout{border-left:4px solid #2FA8A0;background:#E6F4F1;border-radius:10px;padding:16px 18px;color:#294E4C}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid rgba(30,111,184,.16);border-radius:14px;padding:20px}.faq-item h2,.faq-item h3{margin:0 0 8px;color:#10263A;font-size:18px}.faq-item p{margin:0;color:#425E72}.app-showcase{display:grid;grid-template-columns:minmax(260px,.7fr) minmax(0,1.3fr);gap:28px;align-items:center}.mini-icon{width:64px;height:64px;border-radius:14px;background:#D7E8F4;border:1px solid rgba(30,111,184,.16);display:flex;align-items:center;justify-content:center;overflow:hidden}.mini-icon img{width:100%;height:100%;object-fit:contain}.breadcrumb{margin-bottom:14px;color:#7E93A6;font-size:14px}.breadcrumb a{color:#5A7388}.site-footer{margin-top:50px;background:#10263A;color:#C7D8E6}.footer-inner{width:min(1220px,calc(100% - 32px));margin:0 auto;padding:38px 0 86px}.footer-brand{display:flex;align-items:center;gap:18px;padding-bottom:24px;border-bottom:1px solid rgba(199,216,230,.16)}.footer-logo{height:34px;width:auto;object-fit:contain;filter:brightness(0) invert(1);opacity:.96}.footer-brand div{display:flex;flex-direction:column}.footer-brand strong{color:#fff}.footer-brand span{font-size:12px;color:#9BB4C7;letter-spacing:.14em}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding:28px 0}.footer-column h2{font-size:14px;color:#fff;margin:0 0 12px}.footer-column a{display:block;color:#C7D8E6;padding:4px 0;font-size:14px}.footer-column a:hover{color:#fff}.footer-note,.footer-copy{color:#9BB4C7;font-size:13px;margin:8px 0}.screen-overlay{position:fixed;z-index:1500;inset:0;background:rgba(16,38,58,.46);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.screen-overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}.tool-drawer{position:fixed;z-index:1600;top:0;right:0;width:min(420px,86vw);height:100dvh;background:#fff;box-shadow:-18px 0 48px rgba(16,38,58,.18);transform:translateX(102%);visibility:hidden;pointer-events:none;transition:transform .25s ease,visibility .25s}.tool-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:76px;border-bottom:1px solid rgba(30,111,184,.16);display:flex;align-items:center;justify-content:space-between;padding:0 18px;gap:12px}.drawer-brand{display:flex;align-items:center;gap:10px;color:#10263A}.drawer-brand img{height:30px;width:auto;object-fit:contain}.close-button{min-height:44px;padding:0 14px;border:1px solid rgba(30,111,184,.2);background:#EEF5FB;color:#10263A;border-radius:10px;cursor:pointer}.drawer-scroll{height:calc(100dvh - 76px);overflow:auto;padding:18px}.drawer-group{padding:8px 0 18px}.drawer-group h2{font-size:13px;margin:0 0 8px;color:#1E6FB8;letter-spacing:.12em}.drawer-links{display:grid;gap:8px}.drawer-links a{display:block;padding:11px 12px;border-radius:10px;border:1px solid rgba(30,111,184,.12);background:#fff}.drawer-links a:hover{background:#EEF5FB}.drawer-links strong{display:block;color:#10263A;font-size:15px}.drawer-links span{display:block;color:#7E93A6;font-size:12px;line-height:1.55;margin-top:2px}.search-layer{position:fixed;z-index:1550;top:92px;left:0;right:0;opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto}.search-card{width:min(850px,calc(100% - 32px));margin:0 auto;background:#fff;border:1px solid rgba(30,111,184,.16);box-shadow:0 16px 40px rgba(16,38,58,.12);border-radius:0 0 16px 16px;padding:24px}.search-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.search-head h2{margin:4px 0 16px;color:#10263A;font-size:22px}.search-look{display:flex;align-items:center;gap:10px;border:1px solid rgba(30,111,184,.28);background:#EEF5FB;border-radius:10px;padding:0 14px}.search-look input{width:100%;height:48px;border:0;background:transparent;color:#243848;outline:0}.search-presets{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.search-presets a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:10px;border:1px solid rgba(30,111,184,.18);background:#fff}.search-tip{font-size:13px;color:#7E93A6;margin:14px 0 0}.mobile-bottom-nav{display:none}
@media(max-width:900px){.site-main{padding-top:116px}.tab-rail{display:none}.viewport-bar{grid-template-columns:minmax(0,1fr) auto auto;gap:8px;height:70px}.brand-logo{max-width:140px;height:32px}.tool-trigger{padding:0 12px}.app-link{padding:0 12px}.page-hero-inner,.app-showcase{grid-template-columns:1fr}.page-hero{padding-top:24px}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3,.grid-6{grid-template-columns:repeat(2,minmax(0,1fr))}.big-rank{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.search-layer{top:92px}.media-slot.app-media{max-height:none;height:360px}}
@media(max-width:640px){body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.window-strip{padding:0 12px}.viewport-bar{padding:0 12px}.brand-logo{max-width:118px}.brand-fallback{font-size:18px}.tool-trigger,.app-link{min-width:72px;padding:0 9px;font-size:13px}.container{width:calc(100% - 32px)}.site-main{padding-top:108px}.home-cover{padding-top:18px}.media-slot.banner-slot{height:210px;min-height:0}.media-slot.card-media{height:190px}.page-hero h1,.home-copy h1{font-size:28px}.lead{font-size:16px}.section-shell{padding:20px}.grid-2,.grid-3,.grid-4,.grid-6,.theme-grid,.shelf-list,.directory-list,.big-rank{grid-template-columns:1fr}.directory-row:first-child,.directory-row:nth-child(2){border-top:1px solid rgba(30,111,184,.16)}.directory-row:first-child{border-top:0}.number-item{grid-template-columns:48px 1fr}.number{font-size:27px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.footer-inner{padding-bottom:90px}.search-layer{top:22px;bottom:0;background:#A9D6F2;overflow:auto}.search-card{width:100%;min-height:100%;border:0;border-radius:0;box-shadow:none;background:#A9D6F2;padding:22px 16px 90px}.search-look{background:#fff}.search-presets a{background:#fff}.mobile-bottom-nav{position:fixed;z-index:1200;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 rgba(30,111,184,.18);box-shadow:0 -8px 24px rgba(16,38,58,.06)}.mobile-bottom-nav a{display:flex;align-items:center;justify-content:center;min-width:0;color:#5A7388;font-size:13px;font-weight:700}.mobile-bottom-nav a.is-current{background:#3B9FE0;color:#fff}.tool-drawer{width:86vw}.screen-overlay{z-index:1500}.tool-drawer{z-index:1600}.mobile-bottom-nav{z-index:1200}.media-slot.app-media{height:330px}}
