:root{--ink:#10203a;--muted:#66758e;--blue:#0068ff;--cyan:#00a7d8;--bg:#f3f7fc;--card:#fff;--line:#dce6f3;--orange:#ff9d24}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei",Arial,sans-serif;line-height:1.75}
a{text-decoration:none;color:inherit}.top{background:#071c3d;color:#dceaff;font-size:13px}.top-inner{max-width:1180px;margin:auto;padding:8px 18px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.nav{max-width:1180px;margin:auto;padding:15px 18px;display:flex;justify-content:space-between;align-items:center;gap:18px}.logo{font-size:25px;font-weight:900;color:var(--blue)}.logo small{color:#17233d;font-size:15px;margin-left:6px}.menu{display:flex;gap:8px;flex-wrap:wrap}.menu a{padding:8px 14px;border-radius:18px;color:#31445f;font-weight:700;font-size:14px}.menu a.active,.menu a:hover{background:var(--blue);color:#fff}
.hero{background:linear-gradient(135deg,#e6f1ff,#fff 55%,#fff1dc);border-bottom:1px solid var(--line)}.hero-inner{max-width:1180px;margin:auto;padding:58px 18px;display:grid;grid-template-columns:1.04fr .96fr;gap:28px;align-items:center}.badge{display:inline-block;background:#fff;color:var(--blue);border:1px solid #cfe0fa;border-radius:999px;padding:5px 13px;font-weight:800}.hero h1{font-size:43px;line-height:1.22;margin:16px 0 12px}.hero p{font-size:17px;color:var(--muted);max-width:690px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{padding:12px 22px;border-radius:8px;font-weight:900}.primary{background:var(--blue);color:#fff}.outline{background:#fff;border:1px solid var(--blue);color:var(--blue)}
.phone-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 42px rgba(20,75,150,.12);padding:24px}.phone-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:14px}.version{color:var(--cyan);font-weight:900}.install-step{display:grid;grid-template-columns:38px 1fr;gap:12px;margin-top:18px}.num{width:38px;height:38px;border-radius:50%;background:#eaf3ff;color:var(--blue);display:grid;place-items:center;font-weight:900}
.main{max-width:1180px;margin:auto;padding:36px 18px}.grid{display:grid;grid-template-columns:2fr 330px;gap:22px}.block{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;margin-bottom:22px}.block h2{margin:0 0 14px;font-size:24px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:#f8fbff;border:1px solid var(--line);border-radius:10px;padding:18px}.card b{display:block;color:var(--blue);font-size:18px;margin-bottom:8px}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left}th{background:#eef5ff}.ok{color:#0a9a61;font-weight:900}
.sidebox{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:18px}.sidebox a{display:block;padding:9px 0;border-bottom:1px dashed #ced9e9;color:#2d568f}.sidebox a:last-child{border-bottom:0}
.news article{background:#fff;border:1px solid var(--line);border-radius:12px;padding:19px;margin-bottom:15px}.news h2{font-size:20px;margin:0 0 8px}.date{color:var(--muted);font-size:13px}.faq{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:14px}.faq h2{font-size:19px;margin:0 0 8px;color:#0c58c8}.faq p{margin:0;color:#52647d}
.footer{background:#071c3d;color:#dceaff;text-align:center;padding:30px 18px;margin-top:28px;font-size:13px}.footer a{margin:0 10px;color:#fff}
@media(max-width:850px){.hero-inner,.grid{grid-template-columns:1fr}.cards{grid-template-columns:1fr}.hero h1{font-size:31px}.nav{align-items:flex-start;flex-direction:column}}