:root{
  --primary:#00a38d; --primary-dark:#00806f; --primary-soft:#e6f6f3;
  --ink:#1a2233; --muted:#6b7486; --line:#e6eaf0; --bg:#f6f8fb; --card:#fff;
  --ok:#18a05e; --danger:#e13b3b; --warn:#c77700;
  --radius:12px; --shadow:0 1px 3px rgba(20,40,80,.06),0 8px 24px rgba(20,40,80,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:15px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
code{background:#eef1f6;padding:2px 6px;border-radius:5px;font-size:.9em;font-family:Consolas,Menlo,monospace}
h1,h2,h3{margin:.2em 0 .5em;line-height:1.3}

/* 导航 */
.nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav-inner{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:12px 20px}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:19px;color:var(--ink)}
.brand .logo{display:inline-flex;width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#2bd0b4);color:#fff;align-items:center;justify-content:center;font-size:20px}
.brand .sub{font-size:12px;color:var(--muted);font-weight:500;margin-left:3px}
.menu{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.menu a{padding:7px 12px;border-radius:8px;color:var(--ink);font-size:14.5px}
.menu a:hover{background:var(--bg);text-decoration:none}
.menu a.active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.nav-actions{display:flex;gap:8px}
.burger{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;font-size:20px;padding:6px 10px;cursor:pointer}

/* 按钮 */
.btn{display:inline-block;padding:9px 16px;border-radius:9px;border:1px solid transparent;font-size:14.5px;cursor:pointer;text-align:center;transition:.15s;background:#fff}
.btn:hover{text-decoration:none;filter:brightness(.97)}
.btn.primary{background:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-dark)}
.btn.ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn.danger{background:#fff5f5;color:var(--danger);border-color:#f3d3d3}
.btn.ok-btn{background:#f0faf4;color:var(--ok);border-color:#c9ead8}
.btn.big{padding:12px 26px;font-size:16px}
.btn.small{padding:5px 11px;font-size:13px}
.btn.block{display:block;width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* 布局 */
.wrap{max-width:1180px;margin:0 auto;padding:28px 20px 60px}
.page-head{margin:8px 0 22px}
.page-head h1{font-size:26px}
.page-head .lead{color:var(--muted);margin-top:2px}
.row-between{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;flex-wrap:wrap}
.center{text-align:center}
.muted{color:var(--muted)}
.section{margin:42px 0}
.accent{color:var(--primary)}

/* Hero */
.hero{background:linear-gradient(135deg,#0b1f2a,#0e3a36 60%,#0b5d50);color:#fff;border-radius:20px;padding:56px 30px;text-align:center;margin-bottom:8px}
.hero h1{font-size:40px;margin:14px 0}
.hero .lead{font-size:18px;opacity:.9;margin-bottom:24px}
.hero .badge{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:999px;font-size:13px}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero-actions .btn.ghost{color:#fff;border-color:rgba(255,255,255,.4);background:transparent}
.hero-actions .btn.primary{background:#2bd0b4;color:#06332c}
.hero-points{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:26px;font-size:14px;opacity:.9}

/* 卡片/网格 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:900px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}
.ic{font-size:26px}
.card h3{margin-top:.2em}
.card .plan-desc{font-size:13px;min-height:38px}

/* 套餐 */
.plan-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.plan{position:relative;border-top:4px solid var(--line)}
.plan.hot{border-top-color:var(--primary)}
.plan.selected{border:2px solid var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.plan-os{font-size:12px;font-weight:700;color:var(--primary);letter-spacing:.5px}
.plan .price{margin:10px 0}
.plan .price .num{font-size:30px;font-weight:800}
.plan .price .per{color:var(--muted);font-size:13px}
.plan-specs{margin:0 0 14px;padding-left:18px;color:var(--ink);font-size:14px}
.plan-specs li{margin:3px 0}

/* 表单 */
label{display:block;margin:12px 0 5px;font-weight:600;font-size:14px}
input,select{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:9px;font-size:15px;background:#fff}
input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.captcha-row{display:flex;gap:12px;align-items:flex-end}
.captcha-col{flex:1}
.captcha-img{height:48px;border-radius:9px;border:1px solid var(--line);cursor:pointer}
.cap-actions{display:flex;flex-direction:column;gap:6px;align-items:stretch}
.cap-actions .captcha-img{height:46px}
.code-row{display:flex;gap:8px}
.code-row input{flex:1}
.auth-wrap{max-width:440px;margin:20px auto}
.auth-card{box-shadow:var(--shadow)}
.alert{padding:11px 14px;border-radius:9px;font-size:14px;margin:10px 0}
.alert.err{background:#fff5f5;color:var(--danger);border:1px solid #f3d3d3}

/* 表格 */
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th,.table td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.table th{color:var(--muted);font-weight:600;font-size:13px}
.table tr:hover td{background:#fafbfd}
.kv{width:100%;border-collapse:collapse;font-size:14.5px}
.kv th,.kv td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left}
.kv th{color:var(--muted);width:130px;font-weight:600}

/* 标签/徽章 */
.tag{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;background:#eef1f6;color:#4a5568;margin-right:4px}
.tag.ok{background:#e6f6ef;color:var(--ok)}
.tag.warn{background:#fff4e0;color:var(--warn)}
.tag.muted{background:#eef1f6;color:#8a93a5}

/* 服务器卡片 */
.server-card{border-left:4px solid var(--primary)}
.server-card .server-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.server-meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px;color:var(--muted);margin:12px 0}
.server-actions{display:flex;gap:8px;flex-wrap:wrap}

/* 计量条 */
.meter{height:8px;background:#eef1f6;border-radius:999px;overflow:hidden;margin:8px 0}
.meter .bar{height:100%;background:linear-gradient(90deg,var(--primary),#2bd0b4);border-radius:999px}

/* 步骤 */
.step{text-align:center;padding:20px}
.step .n{width:42px;height:42px;margin:0 auto 10px;border-radius:50%;background:var(--primary);color:#fff;font-weight:800;font-size:20px;display:flex;align-items:center;justify-content:center}
.band{background:linear-gradient(135deg,#e6f6f3,#eef7fb);border-radius:20px;padding:34px 20px}
.cta{text-align:center}

/* 控制台 */
.console{background:#0d1b2a;color:#b7f0df;font-family:Consolas,Menlo,monospace;font-size:13px;padding:14px;border-radius:10px;min-height:200px;max-height:420px;overflow:auto;white-space:pre-wrap;word-break:break-all}
.console.mini{min-height:80px;max-height:240px}
.console-in{display:flex;gap:8px;margin-top:10px}
.console-in input{background:#0d1b2a;color:#fff;border-color:#1c3a4f}
.console-in .prompt{color:#2bd0b4;font-weight:700;align-self:center}
.console-wrap .console-head{display:flex;gap:8px;align-items:center;margin-bottom:10px;flex-wrap:wrap}

/* FAQ / 文档 */
.faq details.card summary{cursor:pointer;font-weight:600}
.docs ol li{margin:6px 0}
.big-email{font-size:24px;font-weight:800;color:var(--primary)}
.qr-box{text-align:center;margin:12px 0}
.qr{width:210px;height:210px;border-radius:12px;border:1px solid var(--line)}

/* hn号 */
.hn-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:linear-gradient(135deg,#0a6bff22,#0aa5ff22);border-color:#0a6bff33}
.hn-no{font-weight:700;letter-spacing:1px;color:var(--primary);font-size:15px}

/* 统计 */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:20px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-align:center}
.stat b{display:block;font-size:26px;color:var(--primary)}
.stat span{color:var(--muted);font-size:13px}

/* 页脚 */
.footer{background:#0b1f2a;color:#c6d3de;padding:40px 20px 20px;margin-top:40px}
.footer-inner{max-width:1180px;margin:0 auto;display:flex;gap:40px;justify-content:space-between;flex-wrap:wrap}
.footer .brand-txt{color:#fff}
.footer-cols{display:flex;gap:48px;flex-wrap:wrap}
.footer-cols b{display:block;margin-bottom:8px;color:#fff}
.footer-cols a{display:block;color:#c6d3de;font-size:14px;padding:3px 0}
.footer-cols a:hover{color:#fff}
.footer-bottom{max-width:1180px;margin:24px auto 0;border-top:1px solid rgba(255,255,255,.1);padding-top:14px;font-size:13px;color:#8aa0b3}

/* 移动端 */
@media(max-width:760px){
  .burger{display:block}
  .menu{display:none;flex-basis:100%;flex-direction:column;padding:6px 0}
  .menu.open{display:flex}
  .nav-actions{display:none}
  .hero h1{font-size:28px}
  .wrap{padding:18px 14px 50px}
  .btn-row{flex-wrap:wrap}
  .page-head h1{font-size:22px}
}