:root{--ink:#14233a;--muted:#596a80;--blue:#1668e8;--soft:#eef5ff;--paper:#fbfcff;--line:#dce5f0;--navy:#0d2747}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.75}a{color:inherit;text-decoration:none}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}.topbar{background:#fff;border-bottom:1px solid var(--line)}.nav{min-height:72px;display:flex;align-items:center;gap:28px}.brand{margin-right:auto;font-weight:900;font-size:20px;color:var(--navy)}.brand small{display:block;color:#6e7d90;font-size:10px;letter-spacing:.15em}.nav a:not(.brand){font-size:14px;color:#4e5f74}.hero{padding:88px 0 74px;background:linear-gradient(135deg,#f7fbff,#e9f3ff)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,.7fr);gap:62px;align-items:center}.eyebrow{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.16em}.hero h1{font-size:clamp(38px,5.3vw,66px);line-height:1.12;letter-spacing:-.035em;margin:16px 0 24px}.lead{font-size:18px;color:var(--muted);max-width:760px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;min-height:46px;padding:0 21px;border-radius:10px;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-weight:750}.button.ghost{background:#fff;color:var(--blue);border:1px solid #bad3f4}.quick-card{background:#fff;border:1px solid #cdddf0;border-radius:18px;padding:26px;box-shadow:0 18px 45px rgba(38,76,122,.1)}.quick-card h2{font-size:19px;margin:0 0 14px}.quick-card ol{margin:0;padding-left:22px}.quick-card li{margin:9px 0;color:#52647a}.section{padding:78px 0}.section.alt{background:#f1f6fc}.section-title{max-width:760px;margin-bottom:34px}.section-title h2{font-size:34px;line-height:1.25;margin:0 0 12px}.section-title p{color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:25px}.card b{display:block;color:var(--blue);font-size:12px;letter-spacing:.08em;margin-bottom:9px}.card h3{font-size:20px;margin:0 0 8px}.card p{color:var(--muted);margin:0}.split{display:grid;grid-template-columns:1fr 1fr;gap:42px}.panel{background:#fff;border-left:4px solid var(--blue);padding:26px 28px;box-shadow:0 10px 35px rgba(33,67,105,.06)}.panel h2{margin-top:0}.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.step{counter-increment:step;border-top:3px solid #bcd7fb;background:#fff;padding:22px}.step:before{content:"0" counter(step);font-weight:900;color:var(--blue)}.step h3{margin:10px 0 6px}.faq{max-width:860px}.faq details{border-bottom:1px solid var(--line);padding:18px 0}.faq summary{font-weight:750;cursor:pointer}.faq p{color:var(--muted)}.footer{background:var(--navy);color:#d8e7f8;padding:44px 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.footer a{display:block;margin:7px 0;color:#b9cbe0}.footer p{color:#aec0d4}.article-hero{padding:58px 0;background:#edf5ff;border-bottom:1px solid var(--line)}.breadcrumb{font-size:13px;color:#65758a}.article-hero h1{font-size:clamp(34px,5vw,54px);line-height:1.18;margin:18px 0}.article{width:min(820px,calc(100% - 40px));margin:58px auto 90px}.article h2{font-size:28px;margin:48px 0 14px}.article p,.article li{color:#4f6075}.article .note{background:#edf5ff;border:1px solid #cbdff8;border-radius:12px;padding:18px 21px}.article table{width:100%;border-collapse:collapse;margin:24px 0}.article th,.article td{border:1px solid var(--line);padding:13px;text-align:left}.article th{background:#edf5ff}.link-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.link-grid a{padding:19px;border:1px solid var(--line);border-radius:12px;background:#fff}.link-grid strong,.link-grid span{display:block}.link-grid span{color:var(--muted);font-size:13px;margin-top:5px}@media(max-width:820px){.nav{flex-wrap:wrap;padding:12px 0}.hero-grid,.split,.footer-grid{grid-template-columns:1fr}.cards,.steps{grid-template-columns:1fr 1fr}.hero{padding:58px 0}.quick-card{max-width:520px}.nav a:not(.brand){font-size:13px}}@media(max-width:540px){.wrap,.article{width:calc(100% - 32px)}.cards,.steps,.link-grid{grid-template-columns:1fr}.hero h1{font-size:38px}.section{padding:58px 0}.nav{gap:14px}.brand{width:100%}}