:root{--bg:#faf8f3;--ink:#453421;--muted:#5d554b;--brown:#80552d;--gold:#d4a15f;--line:#ded2be}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--muted);font:16px/1.8 Arial,"Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif;padding-bottom:88px}.wrap{width:min(1140px,calc(100% - 40px));margin:auto}a:focus,button:focus{outline:3px solid var(--gold);outline-offset:3px}.top{height:72px;background:#3b332a;color:white}.top .wrap{height:100%;display:flex;align-items:center;gap:26px}.logo{width:100px;height:38px;object-fit:contain}.nav{display:flex;gap:20px;margin-left:auto}.nav a{text-decoration:none;font-size:14px}.cta{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:6px;background:#d4a15f;color:#453421;text-decoration:none;font-weight:800}.install-hero{background:#efe8db;padding:74px 0}.install-hero .hero-row{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}.install-hero h1{font-size:clamp(38px,5vw,58px);line-height:1.15;color:var(--ink);margin:15px 0}.desktop-area{background:#f8efdf;border:1px solid var(--line);padding:40px;border-radius:14px}.file-flow{display:grid;grid-template-columns:1fr 70px 1fr;align-items:center;gap:18px}.file-icon,.shortcut{height:150px;display:grid;place-items:center;border:2px solid #c7a274;border-radius:12px;background:#fff;color:var(--brown);font-weight:800;text-align:center;padding:18px}.arrow{font-size:44px;color:var(--brown);text-align:center}.desktop-shot{display:block;width:74%;height:140px;object-fit:contain;margin:26px auto 0}.section{padding:80px 0}.section h2{color:var(--ink);font-size:31px}.columns{display:grid;grid-template-columns:1fr 1fr;gap:28px}.panel{background:#fff;border:1px solid var(--line);padding:26px;border-radius:10px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.steps div{padding:25px;border-left:4px solid var(--gold);background:#fff}.shortcut-note{background:#e9ddc8;padding:32px;border:1px solid #d1b78d}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;border:0;background:#f1e8d8;text-align:left;padding:18px;color:var(--ink);font:inherit;font-weight:700;cursor:pointer}.faq-answer{padding:0 18px 18px}.final{background:#342b22;color:#eee1d4;text-align:center;padding:56px 0}.final h2{color:#fff}.footer{background:#342b22;color:#ddcfba;padding:32px 0}.footer-line{display:flex;align-items:center;justify-content:space-between;gap:24px}.footer a{color:#ddcfba;text-decoration:none;margin-right:20px}.mobilebar{display:none}@media(max-width:760px){.wrap{width:calc(100% - 28px)}.nav{display:none}.top .wrap,.footer-line{justify-content:space-between}.install-hero{padding:48px 0}.install-hero .hero-row,.columns,.steps{grid-template-columns:1fr}.install-hero h1{font-size:40px}.desktop-area{padding:22px}.file-flow{grid-template-columns:1fr;gap:10px}.arrow{transform:rotate(90deg)}.section{padding:54px 0}.mobilebar{display:block;position:fixed;z-index:10;left:0;right:0;bottom:0;height:62px;background:#3b332a;padding:9px 14px}.mobilebar .cta{width:100%}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}