*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#eef bff;--surf:#fff;--tx:#07323c;--mut:#5b7d86;--ac:#06b6d4;--ac2:#38bdf8;--bd:#d6eef3}
:root{--bg:#eefbff}
html{scroll-behavior:smooth}body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--tx);line-height:1.75}
a{color:inherit;text-decoration:none}.container{max-width:1100px;margin:0 auto;padding:0 24px}.ho-narrow{max-width:740px}
.ho-nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--bd)}.ho-nav .container{display:flex;align-items:center;height:66px}.ho-logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:19px}.ho-logo img{border-radius:8px}.ho-nav nav{margin-left:auto;display:flex;align-items:center;gap:24px;color:var(--mut)}.ho-nav nav a:hover{color:var(--ac)}
.ho-cta{background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff!important;padding:11px 24px;border-radius:999px;font-weight:700;box-shadow:0 6px 18px rgba(6,182,212,.3)}
.ho-hero{padding:80px 0;background:linear-gradient(160deg,#9fe6f5,#d4f3fb 55%,var(--bg))}
.ho-hero-in{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.ho-badge{display:inline-block;background:#fff;color:var(--ac);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;box-shadow:0 3px 10px rgba(6,182,212,.15)}
.ho-hero h1{font-size:clamp(32px,5vw,52px);font-weight:900;margin:16px 0;color:#063b47}.ho-hero p{color:#2c6b78;max-width:520px}.ho-hero-btn{display:flex;align-items:center;gap:18px;margin-top:26px}.ho-link{color:var(--ac);font-weight:700}
.ho-hero-card{background:#fff;border-radius:24px;padding:34px;text-align:center;box-shadow:0 20px 50px rgba(6,120,150,.18)}.ho-hero-card img{filter:drop-shadow(0 10px 24px rgba(6,182,212,.3))}
.ho-mini{display:flex;justify-content:space-around;margin-top:18px;border-top:1px solid var(--bd);padding-top:16px}.ho-mini b{display:block;font-size:22px;color:var(--ac);font-weight:900}.ho-mini span{font-size:12px;color:var(--mut)}
.ho-sec{padding:78px 0}.ho-band{padding:78px 0;background:#ddf5fb}.ho-h2{text-align:center;font-size:clamp(24px,3.4vw,33px);font-weight:800;color:#063b47}.ho-lead{text-align:center;color:var(--mut);margin-top:10px}
.ho-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:42px}
.ho-card{background:var(--surf);border:1px solid var(--bd);border-radius:20px;padding:28px;box-shadow:0 8px 26px rgba(6,120,150,.06);transition:.2s}.ho-card:hover{transform:translateY(-5px);box-shadow:0 18px 44px rgba(6,182,212,.16)}
.ho-ic{width:58px;height:58px;border-radius:16px;background:linear-gradient(135deg,#cdeffa,#a5e4f5);display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:14px}.ho-card h3{font-size:19px;color:#063b47}.ho-card p{color:var(--mut);margin-top:6px;font-size:15px}
.ho-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:42px}.ho-step{background:var(--surf);border:1px solid var(--bd);border-radius:18px;padding:26px;text-align:center}.ho-step span{display:inline-flex;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff;font-weight:900;align-items:center;justify-content:center;font-size:18px}.ho-step h3{margin:12px 0 6px;font-size:17px;color:#063b47}.ho-step p{color:var(--mut);font-size:14px}
.ho-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:36px}.ho-chip{background:var(--surf);border:1px solid var(--bd);padding:11px 20px;border-radius:999px;font-weight:600;color:#063b47}
.ho-dl{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:38px}
.dl-card{display:block;text-align:center;background:var(--surf);border:1px solid var(--bd);border-radius:18px;padding:30px 16px;transition:.2s;box-shadow:0 8px 24px rgba(6,120,150,.05)}.dl-card:hover{transform:translateY(-5px);border-color:var(--ac);box-shadow:0 16px 40px rgba(6,182,212,.18)}
.dl-ic{font-size:40px}.dl-card h3{margin:10px 0 4px;color:#063b47}.dl-meta{color:var(--mut);font-size:13px}
.ho-faq{margin-top:32px}.ho-faq details{background:var(--surf);border:1px solid var(--bd);border-radius:14px;padding:2px 22px;margin-bottom:14px}.ho-faq summary{cursor:pointer;font-weight:700;padding:18px 0;list-style:none;color:#063b47}.ho-faq summary::-webkit-details-marker{display:none}.ho-faq p{color:var(--mut);padding-bottom:18px}
.flinks{background:#cfeff7;padding:34px 0;text-align:center}.flinks h2{font-size:15px;color:var(--mut);margin-bottom:14px;font-weight:600}.flinks-list{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px}.flinks-list a{color:var(--ac);font-size:14px}.flinks-list a:hover{text-decoration:underline}
.ft{background:#063b47;color:#bfe6ef;padding:32px 0;text-align:center}.ft-brand{display:flex;align-items:center;justify-content:center;gap:8px;font-weight:800;color:#fff;margin-bottom:8px}.ft-brand img{border-radius:7px}.ft-copy{font-size:13px;opacity:.85}
@media(max-width:860px){.ho-cards{grid-template-columns:1fr 1fr}.ho-steps,.ho-dl{grid-template-columns:1fr 1fr}.ho-hero-in{grid-template-columns:1fr}.ho-hero-card{display:none}.ho-nav nav a:not(.ho-cta){display:none}}
@media(max-width:520px){.ho-cards,.ho-steps,.ho-dl{grid-template-columns:1fr}}
/* hero quick-download row */
.hero-dl{display:flex;flex-wrap:wrap;gap:14px;margin:34px 0 38px;justify-content:center}.hdl{display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:10px;border:1.5px solid var(--ac);color:var(--ac);font-weight:700;font-size:16px;background:rgba(128,128,128,.05);transition:.15s}.hdl:hover{background:var(--ac);color:#fff;transform:translateY(-2px)}