:root{--bg:#F4FAFC;--paper:#fff;--soft:#E7F3F6;--title:#0E3A46;--text:#24505A;--muted:#4A7380;--light:#7A9AA4;--sea:#1A7F8F;--bright:#2BB3C4;--deep:#0F5B68;--pale:#D7EEF2;--line:rgba(26,127,143,.16);--shadow:0 14px 34px rgba(14,58,70,.08);--radius:16px;--head:72px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}img{display:block;max-width:100%;height:auto;object-fit:contain;object-position:center}.wrap{width:min(1200px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;z-index:90;top:0;left:0;right:0;height:var(--head);background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.brand-bar{height:100%;display:grid;grid-template-columns:190px 1fr auto;align-items:center;gap:24px}.brand{display:flex;align-items:center;min-width:0}.brand-logo,.footer-logo{height:34px;width:auto;max-width:170px}.brand-text{font-size:21px;font-weight:800;color:var(--title)}.main-nav{display:flex;justify-content:center;gap:22px;white-space:nowrap}.main-nav a{padding:8px 4px;color:var(--muted);font-weight:650;position:relative}.main-nav a:after{content:"";position:absolute;height:2px;left:50%;right:50%;bottom:2px;background:var(--sea);transition:.2s}.main-nav a:hover,.main-nav a.is-current{color:var(--sea)}.main-nav a.is-current:after,.main-nav a:hover:after{left:4px;right:4px}.header-actions{display:flex;align-items:center;gap:8px}.icon-btn,.close-btn,.app-link{min-height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--deep);padding:0 14px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.app-link{background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);color:white;border:0}.site-main{padding-top:var(--head);min-height:65vh}.context-wrap{padding-top:20px}.context-nav{display:flex;gap:9px;align-items:center;flex-wrap:wrap;font-size:14px;color:var(--light)}.context-nav a:hover{color:var(--sea)}.context-nav strong{color:var(--muted)}
.hero,.page-hero{padding:44px 0 56px}.hero-media{background:var(--pale);border-radius:20px;padding:14px;box-shadow:var(--shadow);margin-bottom:28px}.hero-media img{width:100%;max-height:420px;margin:auto}.eyebrow{color:var(--sea);font-weight:800;letter-spacing:.08em;margin:0 0 8px}.hero h1,.page-hero h1{font-size:clamp(28px,4vw,44px);line-height:1.22;color:var(--title);margin:0 0 18px;max-width:920px}.page-hero h1{font-size:clamp(28px,3vw,36px)}.lead{font-size:18px;max-width:820px;color:var(--muted)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{min-height:44px;border-radius:11px;padding:10px 18px;display:inline-flex;align-items:center;justify-content:center;font-weight:750;border:1px solid var(--line)}.btn.primary{background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);color:#fff;border:0}.btn.secondary{background:#fff;color:var(--deep)}.section{padding:58px 0}.section.alt{background:var(--paper)}.section.soft{background:var(--soft)}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:26px}.section-head h2,.article-block h2{color:var(--title);font-size:clamp(24px,3vw,32px);line-height:1.3;margin:0 0 8px}.section-head p{max-width:720px;margin:0;color:var(--muted)}.feature-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:22px}.feature-main,.story-card,.plain-card,.article-block,.info-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.feature-main{padding:24px}.feature-main img,.story-card img{width:100%;max-height:330px;margin:0 auto 18px}.feature-side{display:grid;gap:18px}.story-card{padding:20px}.story-card h3,.plain-card h3{color:var(--title);margin:0 0 8px;font-size:20px}.story-card p,.plain-card p{margin:0;color:var(--muted)}.magazine{display:grid;grid-template-columns:1.35fr .75fr .75fr;gap:18px}.plain-card{padding:22px}.plain-card.large{padding:28px}.stagger{display:grid;gap:26px}.stagger-row{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}.stagger-row:nth-child(even) .media{order:2}.media{background:var(--pale);padding:12px;border-radius:16px}.media img{width:100%;max-height:300px;margin:auto}.text h3{color:var(--title);font-size:25px;margin:0 0 10px}.text p{margin:0 0 12px}.text-link{color:var(--sea);font-weight:800}.split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}.index-list{display:grid;gap:10px}.index-list a{display:flex;justify-content:space-between;gap:12px;background:#fff;border:1px solid var(--line);padding:14px 16px;border-radius:12px}.index-list a:hover{border-color:rgba(26,127,143,.4);transform:translateY(-1px)}.theme-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.theme-grid .plain-card{box-shadow:none}.tool-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.tool-item{padding:18px 20px;border-left:4px solid var(--sea);background:#fff;border-radius:0 12px 12px 0}.app-zone{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;align-items:center}.app-images{display:grid;justify-items:center;gap:16px}.app-image{max-height:440px;width:auto}.app-icon{width:64px;height:64px}.three-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.faq-preview{display:grid;gap:12px}.faq-preview article{padding:18px 0;border-bottom:1px solid var(--line)}.faq-preview h3{margin:0 0 6px;color:var(--title);font-size:18px}.faq-preview p{margin:0;color:var(--muted)}
.article-shell{padding:12px 0 68px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:34px}.article-body{min-width:0}.article-block{padding:28px;margin-bottom:22px}.article-block p{margin:0 0 15px}.article-block ul,.article-block ol{padding-left:1.25em}.article-block li+li{margin-top:8px}.article-block h3{color:var(--title);font-size:21px;margin:24px 0 10px}.article-image{background:var(--pale);padding:12px;border-radius:16px;margin:0 0 24px}.article-image img{width:100%;max-height:420px;margin:auto}.side-index{position:sticky;top:94px;display:grid;gap:10px}.side-index a{padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--muted)}.side-index a:hover{color:var(--sea)}.number-lines{counter-reset:item;display:grid;gap:12px}.number-lines div{counter-increment:item;display:grid;grid-template-columns:48px 1fr;gap:14px;padding:16px;background:var(--soft);border-radius:12px}.number-lines div:before{content:counter(item,decimal-leading-zero);font-weight:900;color:var(--sea);font-size:22px}.timeline{display:grid;gap:0}.timeline article{position:relative;padding:0 0 28px 34px;border-left:2px solid var(--pale)}.timeline article:before{content:"";position:absolute;left:-7px;top:7px;width:12px;height:12px;border-radius:50%;background:var(--sea)}.timeline h3{margin:0 0 8px;color:var(--title)}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.step b{display:block;color:var(--sea);font-size:14px;margin-bottom:8px}.terms{display:grid;gap:16px}.terms section{padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:14px}.terms h2{margin:0 0 8px;color:var(--title);font-size:22px}.faq-list{display:grid;gap:14px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px}.faq-list summary{font-weight:800;color:var(--title);cursor:pointer}.faq-list p{margin:12px 0 0;color:var(--muted)}
.site-footer{background:#0E3A46;color:#D4E8EC;padding:48px 0 84px}.footer-grid{display:grid;grid-template-columns:1.8fr repeat(5,1fr);gap:24px}.footer-grid h3{font-size:15px;color:#fff;margin:0 0 10px}.footer-grid a{display:block;font-size:14px;padding:4px 0;color:#D4E8EC}.footer-grid a:hover{color:#fff}.footer-brand p{font-size:14px;max-width:320px;color:#b9d6dc}.footer-logo-link{display:flex!important;gap:12px;align-items:center;margin-bottom:16px}.footer-logo-link span{display:grid}.footer-logo-link small{font-size:11px;letter-spacing:.08em}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:18px;margin-top:28px;font-size:13px}.overlay{position:fixed;z-index:110;inset:0;background:rgba(7,38,45,.45);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.drawer{position:fixed;z-index:120;right:0;top:0;bottom:0;width:min(440px,90vw);background:#fff;transform:translateX(105%);visibility:hidden;pointer-events:none;transition:.25s;overflow:auto;box-shadow:-20px 0 50px rgba(14,58,70,.16)}.drawer.is-open{transform:none;visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:#fff;display:flex;justify-content:space-between;align-items:center;padding:16px 18px;border-bottom:1px solid var(--line);z-index:2}.drawer-brand{display:flex;gap:10px;align-items:center;font-weight:800;color:var(--title)}.drawer-brand img{height:30px;width:auto;max-width:130px}.drawer-groups{padding:18px}.drawer-groups section+section{margin-top:24px}.drawer-groups h3{font-size:15px;color:var(--sea);margin:0 0 8px}.drawer-groups a{display:grid;padding:11px 0;border-bottom:1px solid var(--line)}.drawer-groups strong{color:var(--title)}.drawer-groups span{font-size:13px;color:var(--muted)}.search-panel{position:fixed;z-index:125;top:var(--head);left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px);transition:.2s}.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.search-inner{padding:22px 0}.search-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;color:var(--title)}.search-box{display:grid;gap:6px;color:var(--muted);font-size:13px}.search-box input{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:12px;outline:none;color:var(--text)}.search-box input:focus{border-color:var(--sea);box-shadow:0 0 0 3px rgba(26,127,143,.1)}.search-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.search-links a{padding:8px 12px;border-radius:9px;background:var(--soft);color:var(--deep)}.mobile-bottom{display:none}
:focus-visible{outline:3px solid rgba(43,179,196,.45);outline-offset:2px}
@media(max-width:1020px){.brand-bar{grid-template-columns:150px 1fr auto;gap:12px}.main-nav{gap:12px;font-size:14px}.desktop-app{display:none}.footer-grid{grid-template-columns:1.5fr repeat(3,1fr)}.footer-grid>div:nth-child(n+5){margin-top:8px}.steps{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){:root{--head:64px}.main-nav{display:none}.brand-bar{grid-template-columns:1fr auto}.brand-logo{height:31px;max-width:145px}.header-actions{gap:6px}.header-actions .icon-btn{padding:0 11px}.hero,.page-hero{padding:32px 0 40px}.section{padding:44px 0}.feature-grid,.magazine,.split,.app-zone,.article-layout{grid-template-columns:1fr}.feature-side{grid-template-columns:1fr 1fr}.stagger-row{grid-template-columns:1fr}.stagger-row:nth-child(even) .media{order:0}.theme-grid{grid-template-columns:1fr 1fr}.three-cols{grid-template-columns:1fr}.side-index{position:static;grid-template-columns:repeat(2,1fr);margin-top:-4px;margin-bottom:24px}.steps{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.site-footer{padding-bottom:92px}.mobile-bottom{position:fixed;z-index:80;left:0;right:0;bottom:0;height:calc(52px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}.mobile-bottom a.is-current{color:var(--sea);font-weight:800;background:var(--soft)}.drawer{z-index:130}.overlay{z-index:120}}
@media(max-width:560px){.wrap{width:min(100% - 32px,1200px)}.hero h1{font-size:30px}.lead{font-size:17px}.feature-side,.theme-grid,.tool-list,.side-index,.steps,.footer-grid{grid-template-columns:1fr}.section-head{display:block}.section-head .btn{margin-top:14px}.article-block{padding:22px 18px}.search-inner{padding:16px 0}.search-panel{top:var(--head)}.header-actions .icon-btn{min-width:48px;font-size:13px}.footer-brand{grid-column:auto}.number-lines div{grid-template-columns:38px 1fr}.app-images{max-width:280px;margin:auto}}