:root{color-scheme:light;--ink:#10253f;--muted:#52647a;--blue:#1558d6;--line:#dce4ef;--paper:#f2f6fc;--max:1160px;font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--ink);background:#fff;font-size:16px;line-height:1.75}a{color:var(--blue);text-underline-offset:4px}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible{outline:3px solid #e78c00;outline-offset:5px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(2.5rem,5.4vw,4.6rem);line-height:1.2;letter-spacing:-.035em;margin-bottom:28px}h2{font-size:clamp(1.65rem,3vw,2.3rem);line-height:1.4}h3{font-size:1.25rem;line-height:1.5}p{color:var(--muted)}.wrap,.header{max-width:var(--max);margin:auto;padding-left:28px;padding-right:28px}.header{display:flex;justify-content:space-between;align-items:center;gap:24px;min-height:88px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:750;color:var(--ink);font-size:1.25rem}.mark{background:var(--blue);color:white;padding:5px 10px;border-radius:6px;font-size:1rem}.header nav{display:flex;gap:26px;flex-wrap:wrap}.header nav a{color:var(--ink);text-decoration:none;font-size:.94rem}.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:70px;align-items:center;padding-top:76px;padding-bottom:84px}.eyebrow{font-size:.875rem;font-weight:650;color:var(--blue);letter-spacing:.035em;margin-bottom:18px}.lead{font-size:1.125rem;max-width:570px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 18px}.button{display:inline-block;background:var(--blue);color:white;padding:11px 22px;border:1px solid var(--blue);border-radius:6px;font-weight:600;text-decoration:none}.button.secondary{background:white;color:var(--blue);border-color:#b4c7e8}.note{font-size:.875rem}.workflow{padding:32px;background:var(--paper);border-top:4px solid var(--blue)}.workflow ol{list-style:none;margin:0;padding:0}.workflow li{display:flex;gap:22px;padding:22px 0;border-bottom:1px solid var(--line)}.workflow li>span{color:var(--blue);font-size:1.1rem;font-variant-numeric:tabular-nums}.workflow h2{font-size:1.25rem;margin:0 0 4px}.workflow p{margin-bottom:0}.workflow-foot{font-size:.875rem;padding-top:20px}.section{padding-top:68px;padding-bottom:68px}.section-heading{max-width:720px;margin-bottom:32px}.section-heading h2{margin-bottom:16px}.features{display:grid;grid-template-columns:repeat(2,1fr);gap:0 44px}.features article{padding:26px 0;border-top:1px solid var(--line)}.number{font-size:.875rem;color:var(--blue)}.features h3{margin:12px 0}.features p{margin-bottom:0}.license-section{background:var(--ink)}.license-section h2,.license-section h3{color:#fff}.license-section p{color:#c7d5e8}.license-section .eyebrow{color:#95baff}.license-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}.license-grid article{border-top:1px solid #45617f;padding-top:26px}.license-grid a{color:#a9c8ff}.contact{display:grid;grid-template-columns:1.2fr .8fr;gap:60px}.contact-card{padding:26px;border:1px solid var(--line);border-radius:6px}.footer{padding-top:28px;padding-bottom:28px;border-top:1px solid var(--line);font-size:.875rem;display:flex;gap:18px;justify-content:space-between;flex-wrap:wrap}.footer div{display:flex;gap:22px}.footer p{width:100%;margin-bottom:0}.skip{position:absolute;left:16px;top:-100px;background:white;padding:10px;z-index:10}.skip:focus{top:10px}.document{max-width:850px;padding-top:54px;padding-bottom:70px}.document h1{font-size:2.3rem;margin-bottom:20px}.document h2{font-size:1.35rem;margin-top:32px;margin-bottom:12px}.document li{margin-bottom:10px;color:var(--muted)}.notice{padding:18px 22px;border-left:4px solid var(--blue);background:var(--paper)}.login-box{max-width:650px;margin:64px auto;padding:36px;background:var(--paper);border:1px solid var(--line)}.login-box h1{font-size:2rem}.disabled-button{display:block;width:100%;padding:13px;border:1px solid #ccd7e5;background:#e1e8f2;color:#536980;font:inherit;border-radius:6px;cursor:not-allowed;margin:24px 0 14px}@media(max-width:760px){.header{align-items:flex-start;flex-direction:column;padding-top:18px;padding-bottom:18px;gap:14px}.header nav{gap:12px 20px}.hero{grid-template-columns:1fr;gap:32px;padding-top:44px;padding-bottom:44px}.section{padding-top:44px;padding-bottom:44px}.features,.license-grid,.contact{grid-template-columns:1fr;gap:24px}.wrap,.header{padding-left:22px;padding-right:22px}.workflow{padding:24px}.login-box{margin:32px 20px;padding:26px}.footer{gap:14px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}