:root{--blue:#2563eb;--ink:#0f1b2d;--muted:#526178;--line:#dce5ef;--soft:#eff6ff;--surface:#f8fafc}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.8}a{color:var(--blue)}a:focus-visible,summary:focus-visible{outline:3px solid #38bdf8;outline-offset:4px}a,summary{touch-action:manipulation}header{border-bottom:1px solid var(--line);background:#fff}header .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--ink);text-decoration:none}.mark{display:grid;place-items:center;width:34px;height:34px;background:linear-gradient(135deg,#3b82f6,#38bdf8);border-radius:10px;color:#fff}header nav{display:flex;align-items:center;gap:22px;flex-wrap:wrap;font-size:14px}header nav a{text-decoration:none;color:var(--muted)}header nav a:hover{color:var(--blue)}.crumbs{padding:24px 0;font-size:13px;color:var(--muted)}.crumbs a{text-decoration:none}.hero{padding:48px 0 56px;background:radial-gradient(ellipse at top right,#e0f2fe,transparent 65%),var(--surface);border-bottom:1px solid var(--line)}.eyebrow{color:var(--blue);font-size:13px;font-weight:700;letter-spacing:.04em}h1{font-size:clamp(30px,4.5vw,48px);line-height:1.3;letter-spacing:-.04em;max-width:950px;margin:16px 0 22px}h2{font-size:clamp(22px,3vw,30px);line-height:1.4;margin:0 0 22px}h3{font-size:19px;line-height:1.5;margin:0 0 12px}p{margin:0 0 16px}.intro{max-width:840px;font-size:18px;color:var(--muted)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 22px;border-radius:10px;background:var(--blue);color:#fff;text-decoration:none;font-weight:700;font-size:14px;border:1px solid var(--blue);transition:transform .2s,box-shadow .2s}.button:hover{transform:translateY(-2px);box-shadow:0 8px 22px #2563eb25}.button.secondary{background:#fff;color:var(--blue)}.section{padding:56px 0}.section+.section{border-top:1px solid var(--line)}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.card{border:1px solid var(--line);border-radius:20px;padding:28px;background:#fff;min-width:0}.card p{color:var(--muted);font-size:15px}.card a{font-weight:700;text-decoration:none}.steps{counter-reset:step;list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.steps li{counter-increment:step;padding:24px;border-radius:18px;background:var(--surface);border:1px solid var(--line)}.steps li:before{content:"0" counter(step);display:block;font-size:24px;font-weight:800;color:var(--blue);margin-bottom:12px}.audience{padding:30px;border-radius:20px;background:var(--soft);font-size:17px}.faq details{padding:18px 0;border-bottom:1px solid var(--line)}.faq summary{font-size:16px;font-weight:700;cursor:pointer}.faq details p{margin:16px 0 0;max-width:880px;color:var(--muted)}.text-links{list-style:none;margin:0;padding:0}.text-links li{padding:16px 0;border-bottom:1px solid var(--line)}.text-links p{color:var(--muted);font-size:14px;margin:5px 0 0}.updated{font-size:13px;color:var(--muted);margin-top:20px}footer{padding:32px 0;background:var(--ink);color:#c3d0df}footer a{color:#b8d8ff}footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px}.footer-links{display:flex;gap:20px;flex-wrap:wrap}.footer-links a{text-decoration:none}.skip{position:absolute;left:20px;top:-80px;background:#fff;padding:12px;z-index:10}.skip:focus{top:12px}
@media(max-width:720px){header .wrap{align-items:flex-start;flex-direction:column;padding:16px 0;gap:12px}header nav{gap:18px;font-size:13px}.hero{padding:32px 0 40px}.intro{font-size:16px}.grid,.steps{grid-template-columns:1fr}.section{padding:38px 0}.card{padding:24px}.actions .button{flex:1;min-width:160px}footer .wrap{flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}}