:root{--bg:#f4f8fc;--ink:#0f2744;--muted:#5f738c;--blue:#1d6fe8;--sky:#3b9eff;--mint:#12b886;--line:#d7e4f5;--card:#fff;--panel:#eef5ff;--r:18px;--shadow:0 18px 48px rgba(29,111,232,.1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Inter","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:linear-gradient(180deg,#fff 0%,var(--bg) 40%,#eaf3ff 100%);overflow-x:hidden}body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.45;background:linear-gradient(90deg,transparent 49%,rgba(29,111,232,.06) 50%,transparent 51%),linear-gradient(transparent 49%,rgba(29,111,232,.05) 50%,transparent 51%);background-size:48px 48px}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 40px));margin:0 auto}.topbar{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:inline-flex;align-items:center;gap:12px;font-weight:950}.logo{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--blue),var(--sky));box-shadow:0 10px 24px rgba(29,111,232,.25)}.links{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:14px}.links a,.lang{padding:9px 12px;border-radius:10px;border:1px solid transparent}.links a:hover,.links .active{color:var(--blue);background:var(--panel);border-color:var(--line)}.lang{color:var(--blue);border-color:var(--line);background:#fff}
.hero{padding:80px 0 56px}.hero-grid,.split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}.eyebrow{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}.eyebrow span,.tag{display:inline-flex;padding:7px 11px;border-radius:8px;color:var(--blue);background:var(--panel);border:1px solid var(--line);font-size:12px;font-weight:900}h1,h2,h3{margin:0;letter-spacing:-.04em}h1{font-size:clamp(40px,6.5vw,76px);line-height:1.05}h2{font-size:clamp(28px,3.8vw,46px);line-height:1.1;margin:12px 0}h3{font-size:19px;margin-bottom:10px}p{color:var(--muted);line-height:1.8}.lead{font-size:17px;max-width:740px;margin:22px 0}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:12px;font-weight:900;color:#fff;background:linear-gradient(135deg,var(--blue),var(--sky));box-shadow:0 12px 28px rgba(29,111,232,.2)}.btn-soft{color:var(--blue);background:#fff;border:1px solid var(--line);box-shadow:none}.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}.trust div,.card,.step,.faq-item,.codebox,.visual-card{border:1px solid var(--line);border-radius:var(--r);background:var(--card);box-shadow:var(--shadow)}.trust div{padding:14px;background:linear-gradient(180deg,#fff,var(--panel))}.trust b{display:block;color:var(--blue);font-size:22px}.trust span{color:var(--muted);font-size:12px}
.device{position:relative;padding:16px;border-radius:22px;border:1px solid var(--line);background:linear-gradient(180deg,#fff,#f0f7ff);box-shadow:var(--shadow);overflow:hidden}.device:before{content:"PANEL";position:absolute;right:20px;top:20px;z-index:2;padding:7px 11px;border-radius:8px;background:var(--blue);color:#fff;font-size:11px;font-weight:950}.device:after{content:"";position:absolute;left:16px;right:16px;bottom:16px;height:54px;border-radius:12px;background:linear-gradient(90deg,rgba(29,111,232,.12),rgba(59,158,255,.08));border:1px solid var(--line);z-index:1}.device img{border-radius:14px;aspect-ratio:4/5;object-fit:cover}
section{padding:68px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:22px;margin-bottom:24px}.section-head p{max-width:540px;margin:0}.grid{display:grid;gap:16px}.platforms{grid-template-columns:repeat(5,1fr)}.cards,.compat,.reco-grid,.use-grid{grid-template-columns:repeat(3,1fr)}.steps{grid-template-columns:repeat(3,1fr);counter-reset:step}.faq{grid-template-columns:repeat(2,1fr)}.card,.step,.faq-item{padding:22px;position:relative}.card:before,.step:before,.faq-item:before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:99px;background:linear-gradient(180deg,var(--blue),var(--sky))}.icon{width:42px;height:42px;border-radius:10px;display:grid;place-items:center;margin-bottom:14px;color:#fff;background:var(--blue);font-weight:950}.meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.meta span{font-size:12px;color:var(--muted);padding:6px 9px;border-radius:8px;background:var(--panel);border:1px solid var(--line)}.codebox{padding:22px;font-family:Consolas,"Courier New",monospace;color:#1558bf;line-height:1.85;background:linear-gradient(180deg,#fff,var(--panel))}.checklist{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:16px}.checklist span{border:1px solid var(--line);border-radius:12px;padding:12px;color:var(--muted);background:#fff}.visual-card{padding:14px;overflow:hidden}.visual-card img,.reco img{width:100%;object-fit:cover;border-radius:12px}.reco img{height:180px;margin-bottom:16px}.step:after{counter-increment:step;content:"Panel " counter(step);display:inline-flex;margin-top:14px;padding:7px 10px;border-radius:8px;color:#fff;background:var(--mint);font-size:12px;font-weight:950}.cta-box{text-align:center;border:1px solid var(--line);border-radius:24px;padding:48px;background:linear-gradient(135deg,#fff,var(--panel));box-shadow:var(--shadow)}.footer{padding:34px 0;border-top:1px solid var(--line);color:var(--muted)}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(5,1fr);gap:16px}.footer b{display:block;color:var(--ink);margin-bottom:8px}
@media(max-width:900px){.nav{align-items:flex-start;flex-direction:column;padding:14px 0}.hero-grid,.split,.platforms,.cards,.compat,.reco-grid,.use-grid,.steps,.faq,.checklist,.footer-grid{grid-template-columns:1fr}.section-head{display:block}h1{font-size:38px}}