@charset "UTF-8";
:root{--ink:#15263b;--muted:#576a78;--line:#d9e3e7;--paper:#f9f8f3;--mist:#edf4f5;--aqua:#77c9d0;--orange:#c96d47;--night:#102a40;--max:1240px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 "Noto Sans SC","Microsoft YaHei",system-ui,sans-serif}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}a:hover{color:#ae4e2a}button{font:inherit}a:focus-visible,button:focus-visible{outline:3px solid var(--orange);outline-offset:3px}p{margin:.5em 0 1em;color:#3d5261}h1,h2,h3{line-height:1.27;letter-spacing:-.02em;margin:0 0 .65em}h1{font-size:clamp(2.2rem,4.6vw,4.4rem)}h2{font-size:clamp(1.65rem,2.8vw,2.65rem)}h3{font-size:1.27rem}.wrap{width:min(var(--max),calc(100% - 48px));margin-inline:auto}.eyebrow{display:block;color:#267985;font-size:.8rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-bottom:16px}.kicker{color:var(--orange);font-size:.82rem;font-weight:800;letter-spacing:.12em}.muted{color:var(--muted)}.small{font-size:.88rem}.topbar{background:#dbe8e9;color:#335061;font-size:.78rem}.topbar .wrap{display:flex;justify-content:space-between;gap:18px;padding:6px 0}.site-header{background:rgba(249,248,243,.98);border-bottom:1px solid var(--line);position:relative;z-index:10}.header-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:12px;font-weight:800;font-size:1.1rem;white-space:nowrap}.brand img{width:43px;height:43px}.nav{display:flex;align-items:center;gap:clamp(13px,2vw,27px)}.nav a{font-size:.9rem;font-weight:650}.nav a[aria-current=page]{color:#a84f32}.menu-toggle{display:none;border:1px solid var(--line);background:white;border-radius:8px;padding:8px 13px;color:var(--ink)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;background:var(--orange);border:1px solid var(--orange);border-radius:8px;color:white;font-weight:750;padding:11px 20px;line-height:1.35;transition:transform .2s,background .2s}.btn:hover{background:#ad5738;color:white;transform:translateY(-1px)}.btn.secondary{background:transparent;color:var(--ink);border-color:#b8cbd0}.btn.secondary:hover{background:#e4eff0}.text-link{display:inline-flex;align-items:center;gap:7px;color:#176a77;font-weight:750}.text-link:after{content:"↗"}.section{padding:78px 0;border-bottom:1px solid var(--line)}.section.tight{padding:54px 0}.section.mist{background:var(--mist)}.section.night{background:var(--night);color:#fff}.section.night p,.section.night .muted{color:#c8d9df}.section-head{max-width:760px;margin-bottom:32px}.section-head p{font-size:1.08rem}.hero{padding:30px 0 24px;background:linear-gradient(160deg,#f7f8f3 55%,#eaf2f3)}.hero-top{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(260px,.8fr);gap:34px;align-items:end;padding-bottom:20px}.hero h1{max-width:780px}.hero-top p{max-width:700px}.hero-actions{border-left:1px solid var(--line);padding-left:30px}.hero-actions .btn{width:100%;margin-bottom:10px}.hero-bottom{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:28px;align-items:stretch}.hero-art{border-radius:15px;overflow:hidden;background:#d8e7e9}.hero-art img{width:100%;height:100%;max-height:360px;object-fit:contain}.hero-tasks{border-top:1px solid #b8ced1}.hero-tasks a{display:grid;grid-template-columns:50px 1fr;gap:12px;padding:19px 0;border-bottom:1px solid #b8ced1}.hero-tasks .num{color:var(--orange);font-weight:800}.hero-tasks strong{display:block;font-size:1.08rem}.hero-tasks span span{display:block;color:var(--muted);font-size:.89rem}.three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}.four{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.task,.check{border-top:2px solid #a9c8cd;padding:22px 5px}.task .count,.check .count{color:var(--orange);font-weight:800;font-size:.85rem}.task p,.check p{font-size:.94rem}.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,75px);align-items:center}.split.visual-left{grid-template-columns:.95fr 1.05fr}.split img{border-radius:12px}.device-media{max-width:620px}.device-media.portrait{max-width:350px;margin-inline:auto}.device-copy ul,.prose ul{padding-left:1.3em;color:#3d5261}.device-copy li,.prose li{margin-bottom:.45em}.device-copy .btn{margin-top:8px}.feature-line{border-left:3px solid var(--aqua);padding-left:23px}.log-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 40px}.log-card{border-top:1px solid #9dbfc4;padding-top:16px;min-width:0}.log-head{display:flex;align-items:center;gap:12px;color:#217b87;font-size:.78rem;font-weight:800;letter-spacing:.1em}.log-head .number{color:var(--orange)}.log-head:after{content:"";height:1px;background:#aacbd0;flex:1}.log-card h3{min-height:2.7em;margin:14px 0}.news-media{width:100%;aspect-ratio:3 / 2;overflow:hidden;border-radius:12px;background:#e0e8e8}.news-media img{display:block;width:100%;height:100%;object-fit:cover}.log-card p{margin:.75em 0}.read-hint{font-size:.85rem;color:#60717b}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 42px}.faq-item{padding:20px 0;border-top:1px solid #b9ced1}.faq-item h3{font-size:1.03rem;margin-bottom:8px}.faq-item p{margin:0}.intro-strip{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}.link-list{display:flex;flex-wrap:wrap;gap:10px 28px}.link-list a{border-bottom:1px solid #8fb4b9;padding-bottom:5px}.footer-lead{background:#dce9e9;padding:42px 0}.footer-lead .split{align-items:end}.site-footer{background:#132b3d;color:#d8e6e8;padding:42px 0 24px;font-size:.86rem}.site-footer a:hover{color:#fff}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:38px}.footer-grid p{color:#bbd0d5}.footer-links{display:grid;gap:8px}.legal{border-top:1px solid #486073;margin-top:30px;padding-top:20px;display:flex;flex-wrap:wrap;gap:10px 24px}.breadcrumb{font-size:.83rem;color:#607381;padding:22px 0}.breadcrumb a{color:#286d77}.page-hero{padding:34px 0 58px;background:linear-gradient(140deg,#eaf3f3,#f9f8f3)}.page-hero h1{max-width:880px}.page-hero p{max-width:780px;font-size:1.08rem}.article-shell{display:grid;grid-template-columns:minmax(0,800px) minmax(220px,1fr);gap:55px}.prose{font-size:1.035rem}.prose h2{font-size:1.72rem;margin:1.5em 0 .5em}.prose h3{margin:1.25em 0 .5em}.prose p{margin:0 0 1.1em}.article-figure{margin:22px 0 34px}.article-figure img{width:100%;border-radius:12px}.article-figure figcaption{font-size:.8rem;color:var(--muted);margin-top:8px}.aside-box{border-top:3px solid var(--aqua);padding-top:20px;position:sticky;top:24px;align-self:start}.aside-box a{display:block;border-bottom:1px solid var(--line);padding:10px 0}.article-nav{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:25px;margin-top:40px}.resource-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px 20px}.resource-grid a{padding:9px 0;border-bottom:1px solid #bad0d3;color:#215d68}.notice{background:#e8f1f1;border-left:3px solid var(--aqua);padding:16px 22px;color:#35505c}.platform-section{scroll-margin-top:20px}.platform-section:nth-child(even){background:var(--mist)}
@media(max-width:950px){.nav{gap:10px}.nav a{font-size:.8rem}.brand{font-size:.96rem}.three,.four{grid-template-columns:repeat(2,1fr)}.resource-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:720px){.wrap{width:min(100% - 32px,var(--max))}.topbar .wrap{display:block}.topbar span:last-child{display:none}.header-row{min-height:64px}.menu-toggle{display:block}.nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);padding:15px 20px 24px;box-shadow:0 14px 20px #102a401c;flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{font-size:1rem;padding:7px 0}.hero{padding:32px 0}.hero-top,.hero-bottom,.split,.split.visual-left,.article-shell,.intro-strip,.footer-grid{grid-template-columns:1fr}.hero-top{gap:12px}.hero-actions{border:0;padding:0}.hero-actions .btn{width:auto;margin-right:7px}.hero-art img{max-height:none}.section{padding:55px 0}.section.tight{padding:40px 0}.three,.four,.log-grid,.faq-grid{grid-template-columns:1fr}.log-card h3{min-height:0}.device-media.portrait{max-width:310px}.resource-grid{grid-template-columns:repeat(2,1fr)}.aside-box{position:static}.brand img{width:36px;height:36px}.brand span{font-size:.92rem}.footer-grid{gap:26px}}
@media(max-width:390px){.hero-actions .btn{width:100%;margin:0 0 9px}.resource-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}
.icon{display:inline-block;width:30px;height:30px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;color:#267985;margin:0 0 12px}