:root{--ink:#111827;--muted:#667085;--line:#e7eaf0;--blue:#2563eb;--blue-dark:#1d4ed8;--soft:#f5f8ff;--orange:#f97316;--green:#16a34a}*{box-sizing:border-box}body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);line-height:1.65;background:#fff}a{color:inherit;text-decoration:none}.container{width:min(1120px,calc(100% - 40px));margin:auto}.nav{height:72px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{font-weight:800;font-size:22px;letter-spacing:-.04em;display:flex;gap:10px;align-items:center}.brand-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);display:grid;place-items:center;color:#fff;font-size:17px}.nav-links{display:flex;gap:28px;color:#475467;font-size:14px}.nav-links a:hover{color:var(--blue)}.nav-cta{background:var(--blue);color:#fff;padding:10px 17px;border-radius:8px;font-weight:700;font-size:14px}.hero{padding:84px 0 72px;background:radial-gradient(circle at 78% 20%,#eaf2ff 0,transparent 34%),linear-gradient(#fff,#f8fbff)}.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:center}.eyebrow{color:var(--blue);font-weight:800;letter-spacing:.1em;font-size:12px;text-transform:uppercase}.hero h1{font-size:clamp(40px,5vw,68px);line-height:1.08;letter-spacing:-.055em;margin:16px 0 20px}.hero h1 em{font-style:normal;color:var(--blue)}.hero p{font-size:18px;color:var(--muted);max-width:550px;margin:0 0 30px}.actions{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 20px;border-radius:9px;font-weight:700;font-size:15px}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px #2563eb2e}.btn-primary:hover{background:var(--blue-dark)}.btn-ghost{border:1px solid #cfd6e3;color:#344054;background:#fff}.meta{display:flex;gap:22px;margin-top:24px;color:#667085;font-size:13px}.screenshot{position:relative}.screenshot img{width:100%;border-radius:14px;box-shadow:0 28px 70px #16315c25;border:1px solid #dae3f2}.screenshot:after{content:"Windows 安装工具";position:absolute;right:-16px;bottom:-16px;padding:10px 14px;background:#fff;border:1px solid var(--line);border-radius:9px;font-size:12px;color:#475467;box-shadow:0 8px 24px #172b4d16}.section{padding:84px 0}.section.gray{background:#f8fafc}.section-head{max-width:650px;margin-bottom:38px}.section-head h2{font-size:38px;line-height:1.15;letter-spacing:-.04em;margin:10px 0}.section-head p{color:var(--muted);font-size:16px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{padding:25px;border:1px solid var(--line);border-radius:13px;background:#fff}.icon{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:#eaf1ff;color:var(--blue);font-weight:800;margin-bottom:17px}.card h3{font-size:18px;margin:0 0 8px}.card p{color:var(--muted);font-size:14px;margin:0}.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.checklist{padding:0;margin:24px 0;list-style:none}.checklist li{padding:9px 0 9px 28px;position:relative;color:#475467}.checklist li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800}.quote{padding:28px;border-left:3px solid var(--blue);background:var(--soft);border-radius:0 12px 12px 0;color:#344054}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:12px}.download-table{width:100%;border-collapse:collapse;min-width:680px}.download-table th,.download-table td{padding:17px 20px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}.download-table th{background:#f8fafc;color:#667085;font-weight:700}.download-table tr:last-child td{border-bottom:0}.download-table .btn{padding:8px 13px;font-size:13px}.faq{max-width:800px}.faq details{border-bottom:1px solid var(--line);padding:18px 0}.faq summary{cursor:pointer;font-weight:700}.faq p{color:var(--muted);margin:12px 0 0;font-size:14px}.page-hero{padding:60px 0;background:var(--soft)}.page-hero h1{font-size:48px;letter-spacing:-.05em;margin:8px 0}.page-hero p{color:var(--muted);max-width:670px}.footer{border-top:1px solid var(--line);padding:32px 0;color:#667085;font-size:13px}.footer-row{display:flex;justify-content:space-between;gap:20px}.footer-links{display:flex;gap:20px}@media(max-width:800px){.nav-links{display:none}.hero-grid,.split{grid-template-columns:1fr;gap:38px}.hero{padding:55px 0}.cards{grid-template-columns:1fr}.section{padding:60px 0}.page-hero h1{font-size:38px}.footer-row{flex-direction:column}.meta{flex-wrap:wrap}}
/* layout refinements */
.container{width:min(1180px,calc(100% - 48px))}.nav{height:76px}.hero{padding:76px 0 88px}.hero-grid{grid-template-columns:minmax(0,1fr) minmax(420px,560px);gap:76px}.hero h1{font-size:clamp(42px,5vw,64px)}.screenshot{max-width:560px;margin-left:auto}.screenshot img{display:block;width:100%;height:auto;max-height:620px;object-fit:cover;object-position:top;border-radius:16px}.section{padding:92px 0}.cards{gap:22px}.card{min-height:190px}.split{grid-template-columns:minmax(0,1fr) minmax(320px,480px);gap:80px}.page-hero{padding:72px 0}.page-hero h1{font-size:52px}.table-wrap{box-shadow:0 10px 30px rgba(16,24,40,.04)}
@media(max-width:900px){.container{width:min(100% - 36px,680px)}.hero{padding:56px 0 64px}.hero-grid,.split{grid-template-columns:1fr;gap:42px}.hero-grid{display:flex;flex-direction:column}.screenshot{order:2;max-width:680px;width:100%;margin:0 auto}.screenshot img{max-height:none}.section{padding:68px 0}.page-hero{padding:54px 0}.page-hero h1{font-size:42px}}
@media(max-width:560px){.container{width:calc(100% - 28px)}.nav{height:64px}.brand{font-size:18px}.brand-mark{width:29px;height:29px}.nav-cta{padding:8px 12px;font-size:12px}.hero h1{font-size:40px}.hero p{font-size:16px}.actions{width:100%}.actions .btn{flex:1;justify-content:center;padding:12px 10px}.meta{gap:10px;font-size:12px}.section-head h2{font-size:31px}.cards{grid-template-columns:1fr}.card{min-height:0}.page-hero h1{font-size:36px}}