* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin:0; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  background:#0b0d12; color:#e8eaed; line-height:1.65; -webkit-font-smoothing:antialiased; }
a { color:inherit; text-decoration:none; }
h1,h2,h3 { line-height:1.25; margin:0; }

/* ---------- 顶栏 ---------- */
.hd { position:sticky; top:0; z-index:50; background:rgba(11,13,18,.82); backdrop-filter:blur(12px); border-bottom:1px solid #1c2028; }
.hd-in { max-width:1080px; margin:0 auto; padding:14px 20px; display:flex; align-items:center; gap:24px; }
.logo { display:flex; align-items:center; gap:9px; font-size:19px; font-weight:700; letter-spacing:.5px; }
.logo-dot { width:11px; height:11px; border-radius:50%; background:#5DCAA5; box-shadow:0 0 0 4px rgba(93,202,165,.16); display:inline-block; }
.nv { margin-left:12px; display:flex; gap:22px; font-size:14px; color:#9aa3b2; }
.nv a:hover { color:#e8eaed; }
.hd-r { margin-left:auto; display:flex; align-items:center; gap:14px; }
.tlink { font-size:14px; color:#9aa3b2; }
.tlink:hover { color:#e8eaed; }

/* ---------- 按钮 ---------- */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:6px; background:#5DCAA5; color:#052b20;
  border:1px solid #5DCAA5; padding:10px 18px; border-radius:9px; font-weight:600; font-size:14px; cursor:pointer;
  transition:transform .12s ease, filter .12s ease; }
.btn:hover { filter:brightness(1.08); transform:translateY(-1px); }
.btn.ghost { background:transparent; color:#5DCAA5; }
.btn.ghost:hover { background:rgba(93,202,165,.1); }
.btn.sm { padding:7px 14px; font-size:13px; }
.btn.lg { padding:14px 30px; font-size:16px; border-radius:11px; }
.btn.full { width:100%; }
.btn2 { background:#262b36; color:#e8eaed; border:1px solid #333a48; padding:9px 14px; border-radius:9px; cursor:pointer; font-size:13px; }

/* ---------- 主视觉 ---------- */
.hero { max-width:1080px; margin:0 auto; padding:76px 20px 56px; text-align:center; position:relative; }
.hero:before { content:""; position:absolute; inset:0; background:radial-gradient(600px 300px at 50% 0%, rgba(93,202,165,.13), transparent 70%); pointer-events:none; }
.hero > * { position:relative; }
.badge { display:inline-block; background:rgba(93,202,165,.1); border:1px solid rgba(93,202,165,.32); color:#7fdcbb;
  padding:6px 15px; border-radius:999px; font-size:13px; margin-bottom:24px; }
.hero h1 { font-size:46px; font-weight:700; letter-spacing:-.5px; margin-bottom:18px; }
.hero h1 em { font-style:normal; color:#5DCAA5; }
.hero .sub { color:#9aa3b2; font-size:17px; max-width:620px; margin:0 auto 32px; }
.cta { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; margin-bottom:40px; }
.hero-meta { list-style:none; padding:0; margin:0; display:flex; gap:46px; justify-content:center; flex-wrap:wrap; }
.hero-meta li { color:#9aa3b2; font-size:13px; }
.hero-meta b { display:block; font-size:24px; color:#e8eaed; font-weight:700; }

/* ---------- 区块 ---------- */
.sec { max-width:1080px; margin:0 auto; padding:64px 20px; }
.sec-h { text-align:center; margin-bottom:38px; }
.sec-h h2 { font-size:30px; font-weight:700; margin-bottom:10px; }
.sec-h p { color:#9aa3b2; margin:0; font-size:15px; }

/* ---------- 特性 ---------- */
.grid4 { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:18px; }
.fc { background:#14171f; border:1px solid #232733; border-radius:14px; padding:24px; transition:border-color .15s ease, transform .15s ease; }
.fc:hover { border-color:#33404f; transform:translateY(-2px); }
.fc .ico { width:42px; height:42px; border-radius:11px; background:rgba(93,202,165,.1); display:flex; align-items:center; justify-content:center; margin-bottom:16px; }
.fc h3 { font-size:16px; margin-bottom:8px; }
.fc p { color:#9aa3b2; font-size:14px; margin:0; }

/* ---------- 步骤 ---------- */
.steps { list-style:none; padding:0; margin:0; display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:18px; counter-reset:s; }
.steps li { background:#14171f; border:1px solid #232733; border-radius:14px; padding:24px; position:relative; }
.steps .n { width:30px; height:30px; border-radius:50%; background:#5DCAA5; color:#052b20; display:flex; align-items:center;
  justify-content:center; font-weight:700; font-size:14px; margin-bottom:14px; }
.steps h3 { font-size:16px; margin-bottom:6px; }
.steps p { color:#9aa3b2; font-size:14px; margin:0; }

/* ---------- 套餐 ---------- */
.cards { display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:20px; align-items:start; }
.pcard { background:#14171f; border:1px solid #232733; border-radius:16px; padding:28px 24px; text-align:center; position:relative; }
.pcard.card-f { border-color:#5DCAA5; box-shadow:0 0 0 1px rgba(93,202,165,.28); }
.pcard .tag { position:absolute; top:-11px; left:50%; transform:translateX(-50%); background:#5DCAA5; color:#052b20;
  font-size:12px; font-weight:700; padding:3px 13px; border-radius:999px; white-space:nowrap; }
.pcard h3 { font-size:17px; margin-bottom:14px; }
.pc-price { font-size:38px; font-weight:700; color:#e8eaed; line-height:1; }
.pc-price .cur { font-size:19px; vertical-align:super; margin-right:2px; color:#9aa3b2; }
.pc-dur { color:#9aa3b2; font-size:13px; margin-top:8px; }
.pc-desc { color:#6f7889; font-size:13px; margin:14px 0 20px; min-height:20px; }
.price { font-size:24px; font-weight:700; color:#5DCAA5; }
.price small { font-size:13px; color:#888; font-weight:400; }
.card { background:#14171f; border:1px solid #232733; border-radius:14px; padding:20px; text-align:center; }
.card h3 { margin-bottom:8px; }

/* ---------- FAQ ---------- */
.faq { max-width:760px; margin:0 auto; }
.faq details { background:#14171f; border:1px solid #232733; border-radius:12px; margin-bottom:11px; overflow:hidden; }
.faq summary { padding:16px 20px; cursor:pointer; font-size:15px; font-weight:500; list-style:none; display:flex; justify-content:space-between; align-items:center; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary:after { content:"+"; color:#5DCAA5; font-size:19px; font-weight:600; }
.faq details[open] summary:after { content:"-"; }
.faq p { padding:0 20px 17px; margin:0; color:#9aa3b2; font-size:14px; }

/* ---------- 表单 / 卡片(后台与仪表盘复用) ---------- */
.wrap { max-width:920px; margin:0 auto; padding:0 20px 60px; }
.top { display:flex; align-items:center; justify-content:space-between; padding:16px 0; border-bottom:1px solid #222; margin-bottom:24px; }
.brand { font-weight:700; font-size:20px; color:#5DCAA5; }
.right { margin-left:auto; }
.right a { color:#bbb; margin-left:12px; }
form { background:#14171f; border:1px solid #232733; padding:24px; border-radius:14px; max-width:400px; display:flex; flex-direction:column; gap:13px; }
input { padding:12px 14px; border-radius:9px; border:1px solid #2b313d; background:#0f1218; color:#e8eaed; font-size:14px; }
input:focus { outline:none; border-color:#5DCAA5; }
.box { background:#14171f; border:1px solid #232733; border-radius:14px; padding:22px; margin:18px 0; }
.ok { background:rgba(93,202,165,.1); border:1px solid rgba(93,202,165,.35); color:#9fe1cb; padding:13px 16px; border-radius:11px; margin:14px 0; }
h2 { margin-top:26px; margin-bottom:14px; }
h3 { margin-top:22px; }
table { width:100%; border-collapse:collapse; margin-top:14px; font-size:14px; }
th,td { text-align:left; padding:11px 10px; border-bottom:1px solid #232733; }
th { color:#8b94a6; font-weight:500; font-size:13px; }
.qr { text-align:center; margin:18px 0; }
.qr img { width:210px; height:210px; background:#fff; padding:11px; border-radius:14px; }
.suburl { display:flex; gap:9px; align-items:center; margin-top:10px; }
.suburl code { background:#0f1218; border:1px solid #232733; padding:11px 13px; border-radius:9px; flex:1; word-break:break-all; font-size:13px; color:#9fe1cb; }
.payinfo { background:rgba(234,179,8,.08); border:1px solid rgba(234,179,8,.28); color:#e8d28a; padding:15px 17px; border-radius:11px; margin-top:18px; font-size:14px; }

/* ---------- 页脚 ---------- */
.ft { border-top:1px solid #1c2028; margin-top:40px; padding:36px 20px; text-align:center; }
.ft-in { max-width:1080px; margin:0 auto; }
.ft-b { display:flex; align-items:center; justify-content:center; gap:9px; font-weight:700; margin-bottom:10px; }
.ft p { color:#6f7889; font-size:13px; margin:4px 0; }
.ft-m { font-size:12px !important; color:#4e5666 !important; }

@media (max-width:760px){
  .nv { display:none; }
  .hero { padding:52px 20px 40px; }
  .hero h1 { font-size:33px; }
  .hero-meta { gap:28px; }
  .sec { padding:44px 20px; }
  .sec-h h2 { font-size:24px; }
}