:root{--deep:#0f1d25;--deep2:#17313d;--teal:#3ec7bf;--teal2:#a8efe8;--paper:#eff7f6;--coral:#ff7b63;--ink:#19333c;--muted:#6c7b82;--line:#cfe0df;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f7fbfb;color:var(--ink);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;font-size:16px;line-height:1.8}img{display:block;max-width:100%;height:auto}a{color:inherit}.shell{width:min(1180px,calc(100% - 40px));margin:auto}.skip{position:fixed;top:-60px;left:12px;z-index:999;background:#fff;padding:10px}.skip:focus{top:12px}
.header{min-height:72px;display:grid;grid-template-columns:180px 1fr auto;gap:24px;align-items:center;padding:0 4vw;background:rgba(15,29,37,.98);color:#fff;position:sticky;top:0;z-index:60}.brand{display:inline-flex;padding:6px 8px;background:#0a1217;border:1px solid rgba(255,255,255,.08)}.brand img{height:32px;width:auto;max-width:155px;object-fit:contain}.header nav{display:flex;justify-content:center;gap:22px}.header nav a{text-decoration:none;color:#d3e6e4;font-size:13px}.header-cta{display:inline-flex;min-height:42px;align-items:center;justify-content:center;padding:8px 18px;background:var(--coral);color:#fff;text-decoration:none;font-weight:900;border-radius:999px}
.hero{background:linear-gradient(135deg,var(--deep) 0,var(--deep2) 100%);color:#fff}.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:62px;align-items:center;padding:78px 0}.tag,.section-head>span,.show-right>span,.retry span,.related-grid>div>span,.faq-grid>div>span{font-size:10px;font-weight:900;letter-spacing:.15em;color:#8fdcd6}.hero h1,.section-head h2,.show-right h2,.retry h2,.related-grid h2,.faq-grid h2,.final h2{margin:0;font-size:clamp(34px,4.6vw,68px);line-height:.98;letter-spacing:-.055em}.hero h1 em{display:block;font-style:normal;color:var(--teal2)}.hero-copy p{max-width:640px;color:#d2e5e4;margin:20px 0 0}.hero-actions{display:flex;gap:16px;margin-top:28px}.primary,.secondary{min-height:52px;display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:999px;text-decoration:none;font-weight:900}.primary{background:var(--coral);color:#fff}.secondary{background:transparent;border:1px solid rgba(255,255,255,.18);color:#fff}.hero-pills{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.hero-pills span{padding:7px 12px;border:1px solid rgba(255,255,255,.12);border-radius:999px;color:#c8dddd;font-size:12px}
.hero-visual{margin:0;padding:18px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-radius:24px;backdrop-filter:blur(8px)}.visual-head{display:flex;justify-content:space-between;padding:0 4px 12px;color:#9fbebe;font-size:9px;letter-spacing:.13em}.visual-head b{font-size:20px;color:var(--coral)}.hero-visual img{max-height:430px;width:auto;margin:auto;object-fit:contain}.hero-visual figcaption{text-align:center;padding-top:12px;color:#bdd3d2;font-size:12px}
.device{padding:88px 0;background:#fff}.section-head{display:grid;grid-template-columns:180px 1fr;gap:24px;margin-bottom:30px}.section-head h2,.show-right h2,.retry h2,.related-grid h2,.faq-grid h2,.final h2{font-size:clamp(30px,3.1vw,46px);line-height:1.13}.device-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--deep);border-left:1px solid var(--line)}.device-grid a{min-height:220px;display:flex;flex-direction:column;padding:24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-decoration:none}.device-grid small{color:var(--coral);font-weight:900}.device-grid strong{margin-top:28px;font-size:22px}.device-grid p{color:var(--muted)}.device-grid b{margin-top:auto;color:#208981}
.showcase{display:grid;grid-template-columns:1fr 1fr;background:var(--paper)}.show-left,.show-right{padding:78px 6vw}.show-left figure{margin:0;padding:18px;background:#fff;border:1px solid var(--line);border-radius:24px}.show-bar{padding-bottom:12px;color:#6b8085;font-size:9px;letter-spacing:.13em}.show-left img{max-height:430px;width:auto;margin:auto;object-fit:contain}.show-right ol{list-style:none;margin:26px 0 0;padding:0;border-top:1px solid #cfe0df}.show-right li{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid #cfe0df}.show-right b{color:var(--coral)}.show-right p{margin:0;color:var(--muted)}.show-right a{display:inline-flex;margin-top:24px;padding:11px 22px;background:var(--deep);color:#fff;text-decoration:none;font-weight:900;border-radius:999px}
.result-grid{padding:88px 0;background:#fff}.section-head.alt>span{color:#1b8f88}.result-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.result-cards article{padding:24px;border:1px solid var(--line);border-radius:18px;background:#f7fbfb}.result-cards strong{font-size:20px}.result-cards p{color:var(--muted)}
.retry{padding:86px 0;background:linear-gradient(135deg,#fff7f4,#ffefe9)}.retry-grid{display:grid;grid-template-columns:.9fr .8fr auto;gap:24px;align-items:center}.retry p{color:#755d59}.retry figure{margin:0;padding:16px;background:#fff;border:1px solid #f0d3cc;border-radius:20px}.retry figure img{max-height:340px;width:auto;margin:auto;object-fit:contain}.retry-cta{display:inline-flex;min-width:210px;min-height:52px;align-items:center;justify-content:center;padding:10px 22px;background:var(--coral);color:#fff;text-decoration:none;font-weight:900;border-radius:999px}
.related{padding:82px 0;background:#fff}.related-grid{display:grid;grid-template-columns:.56fr 1.44fr;gap:60px}.related-grid nav{border-top:1px solid var(--line)}.related-grid nav a{min-height:84px;display:grid;grid-template-columns:100px 1fr 20px;gap:18px;align-items:center;border-bottom:1px solid var(--line);text-decoration:none}.related-grid small{color:#1e918a;font-size:9px;font-weight:900}.related-grid b{color:var(--coral)}
.faq{padding:86px 0;background:var(--paper)}.faq-grid{display:grid;grid-template-columns:.58fr 1.42fr;gap:60px}.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;list-style:none;padding:20px 2px;font-size:18px;font-weight:900}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";float:right;color:var(--coral)}.faq-list details[open] summary:after{content:"−"}.faq-list p{margin:-3px 0 22px;padding-right:36px;color:var(--muted)}
.final{padding:56px 0;background:var(--deep);color:#fff}.final-grid{display:grid;grid-template-columns:110px 1fr auto;gap:28px;align-items:center}.final-grid>span{font-size:10px;font-weight:900;letter-spacing:.14em;color:#98dad5}.final p{margin:6px 0 0;color:#cde0de}.final a{min-width:200px;min-height:52px;display:inline-flex;align-items:center;justify-content:center;background:var(--coral);color:#fff;text-decoration:none;font-weight:900;border-radius:999px}
.footer{padding:50px 0 86px;background:#0a1217;color:#d6e1e0}.foot-grid{display:grid;grid-template-columns:1fr auto;gap:36px}.foot-grid img{height:31px;width:auto;max-width:155px;object-fit:contain;padding:6px 8px;background:#050a0d}.foot-grid p{color:#93a7a6;font-size:13px}.foot-grid nav{display:flex;gap:18px;flex-wrap:wrap}.foot-grid nav a{color:#d6e1e0;text-decoration:none;font-size:14px}.mobile-bar{display:none}
@media(max-width:900px){.header{grid-template-columns:1fr auto}.header nav{display:none}.hero-grid,.showcase,.related-grid,.faq-grid{grid-template-columns:1fr}.section-head{grid-template-columns:1fr}.device-grid,.result-cards{grid-template-columns:1fr}.retry-grid{grid-template-columns:1fr}.final-grid{grid-template-columns:1fr}.final a,.retry-cta{width:100%}}
@media(max-width:600px){body{font-size:15px;padding-bottom:60px}.shell{width:min(100% - 28px,1180px)}.header{padding:0 14px;min-height:64px}.brand img{height:28px}.header-cta{font-size:12px;padding:8px 12px}.hero-grid{padding:56px 0}.hero h1{font-size:clamp(42px,14vw,60px)}.hero-actions{flex-direction:column}.primary,.secondary{width:100%}.hero-visual img{max-height:320px}.show-left,.show-right{padding:56px 22px}.show-right li{grid-template-columns:34px 1fr}.result-grid,.device,.related,.faq{padding:62px 0}.retry{padding:62px 0}.retry figure img{max-height:280px}.foot-grid{grid-template-columns:1fr}.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:100;height:60px;display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:8px 14px;background:rgba(15,29,37,.98);color:#fff;border-top:1px solid rgba(255,255,255,.1)}.mobile-bar a{min-height:42px;display:inline-flex;align-items:center;justify-content:center;padding:8px 15px;background:var(--coral);color:#fff;text-decoration:none;font-weight:900;border-radius:999px}}