:root {
  --bg: #07090d;
  --bg2: #0d1117;
  --card: #11161e;
  --line: #1e2631;
  --ink: #e8ecf1;
  --muted: #8b95a3;
  --gold: #d6a84e;
  --gold2: #f2cf7e;
  --teal: #3cc3a6;
  --radius: 16px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* 顶栏 */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 9, 13, .72); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .02em; font-size: 18px; }
.brand img { width: 34px; height: 26px; border-radius: 6px; }
.menu { display: flex; gap: 26px; font-size: 15px; color: var(--muted); }
.menu a:hover, .menu a[aria-current="page"] { color: var(--ink); }
.nav .spacer { flex: 1; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 18px; border-radius: 999px; font-weight: 600; font-size: 15px; white-space: nowrap;
  border: 1px solid var(--line); transition: .2s;
}
.btn:hover { border-color: var(--gold); }
.btn.primary { background: linear-gradient(135deg, var(--gold2), var(--gold)); color: #1a1406; border: 0; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.lg { padding: 13px 26px; font-size: 16px; }
.menu-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--ink); border-radius: 10px; padding: 6px 10px; font: inherit; }
@media (max-width: 820px) {
  .menu { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: var(--bg2); border-bottom: 1px solid var(--line); padding: 8px 20px; }
  .menu a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .menu a:last-child { border-bottom: 0; }
  .nav.open .menu { display: flex; }
  .menu-toggle { display: inline-block; }
  .nav .wrap { gap: 12px; }
}

/* 通用区块 */
section { padding: 96px 0; }
.eyebrow { color: var(--gold); font-weight: 600; font-size: 14px; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 12px; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.01em; margin: 0; }
h2 { font-size: clamp(28px, 4.2vw, 42px); margin-bottom: 16px; }
h3 { font-size: 20px; margin-bottom: 8px; }
.lead { color: var(--muted); font-size: 18px; max-width: 720px; margin: 0; }
.center { text-align: center; }
.center .lead { margin: 0 auto; }
.grad { background: linear-gradient(120deg, var(--gold2), var(--gold) 45%, #e9e2cf); -webkit-background-clip: text; background-clip: text; color: transparent; }
@media (max-width: 640px) { section { padding: 64px 0; } }

/* 首屏 */
.hero { position: relative; overflow: hidden; padding: 120px 0 104px; }
.hero::before {
  content: ""; position: absolute; inset: -40% -20% auto; height: 120%;
  background: radial-gradient(ellipse at 50% 0%, rgba(214, 168, 78, .22), transparent 60%),
              radial-gradient(ellipse at 85% 30%, rgba(60, 195, 166, .12), transparent 55%);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px; opacity: .35;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 20%, transparent 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; text-align: center; }
.hero h1 { font-size: clamp(36px, 7vw, 72px); margin: 8px 0 20px; }
.hero .lead { margin: 0 auto; font-size: clamp(17px, 2.2vw, 20px); }
.hero .cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 36px; }
.pill { display: inline-block; border: 1px solid var(--line); background: rgba(17, 22, 30, .7); color: var(--muted);
  border-radius: 999px; padding: 5px 14px; font-size: 13px; }
.pill b { color: var(--gold); font-weight: 600; }

/* 卡片网格 */
.grid { display: grid; gap: 18px; margin-top: 48px; }
.grid.g4 { grid-template-columns: repeat(4, 1fr); }
.grid.g3 { grid-template-columns: repeat(3, 1fr); }
.grid.g2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 980px) { .grid.g4 { grid-template-columns: repeat(2, 1fr); } .grid.g3 { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .grid.g4, .grid.g2 { grid-template-columns: 1fr; } }
.card {
  background: linear-gradient(180deg, var(--card), var(--bg2)); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; position: relative; transition: border-color .2s, transform .2s;
}
.card:hover { border-color: rgba(214, 168, 78, .45); transform: translateY(-2px); }
.card .num { font: 600 13px/1 ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--gold); letter-spacing: .1em; }
.card h3 { margin-top: 14px; }
.card p { color: var(--muted); margin: 0; font-size: 15px; }
.card ul { margin: 14px 0 0; padding: 0; list-style: none; font-size: 14px; color: var(--muted); }
.card li { padding-left: 18px; position: relative; margin: 4px 0; }
.card li::before { content: ""; position: absolute; left: 2px; top: .7em; width: 6px; height: 6px; border-radius: 2px; background: var(--gold); opacity: .7; }

/* 两站分区 */
.band { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 36px; } }
.split .more { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }

/* 委托流程图 */
.flow { display: grid; gap: 12px; }
.step { display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: start;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
.step .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-weight: 700;
  background: rgba(214, 168, 78, .12); color: var(--gold); border: 1px solid rgba(214, 168, 78, .3); }
.step.exec .ico { background: rgba(60, 195, 166, .1); color: var(--teal); border-color: rgba(60, 195, 166, .3); }
.step b { display: block; }
.step span { color: var(--muted); font-size: 14px; }
.step code { font: 13px ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--teal); background: rgba(60,195,166,.08); padding: 1px 6px; border-radius: 6px; }
.arrow { text-align: center; color: var(--muted); font-size: 13px; line-height: 1; }

/* 对比表 */
.compare { width: 100%; border-collapse: collapse; margin-top: 40px; font-size: 15px; }
.compare th, .compare td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare th { color: var(--muted); font-weight: 600; font-size: 14px; }
.compare td:first-child { color: var(--muted); white-space: nowrap; }
.tablewrap { overflow-x: auto; }

/* 收尾 CTA */
.final { text-align: center; }
.final .box { border: 1px solid var(--line); border-radius: 24px; padding: 64px 24px;
  background: radial-gradient(ellipse at 50% 0%, rgba(214, 168, 78, .16), transparent 65%), var(--bg2); }
.final .cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }

/* 页脚 */
footer { border-top: 1px solid var(--line); padding: 48px 0 40px; color: var(--muted); font-size: 14px; }
footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 28px; }
@media (max-width: 760px) { footer .cols { grid-template-columns: 1fr 1fr; } }
footer h4 { color: var(--ink); font-size: 14px; margin: 0 0 12px; }
footer ul { list-style: none; margin: 0; padding: 0; }
footer li { margin: 6px 0; }
footer a:hover { color: var(--ink); }
footer .legal { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }


/* 价格页 */
.subhero { padding: 96px 0 24px; text-align: center; position: relative; }
.subhero h1 { font-size: clamp(32px, 5.5vw, 56px); margin: 8px 0 16px; }
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 48px; align-items: stretch; }
@media (max-width: 1040px) { .plans { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .plans { grid-template-columns: 1fr; } }
.plan { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 22px; position: relative; }
.plan.hot { border-color: var(--gold); box-shadow: 0 0 0 1px rgba(214,168,78,.25), 0 20px 60px -30px rgba(214,168,78,.5); }
.plan .badge { position: absolute; top: -12px; left: 22px; background: var(--gold); color: #1a1406; font-size: 12px; font-weight: 700; border-radius: 999px; padding: 2px 10px; }
.plan h2 { font-size: 22px; margin: 0 0 4px; }
.plan .for { color: var(--muted); font-size: 14px; margin: 0 0 18px; min-height: 3.2em; }
.plan .price { font-size: 40px; font-weight: 700; letter-spacing: -.02em; }
.plan .price small { font-size: 15px; color: var(--muted); font-weight: 500; }
.plan .note { color: var(--muted); font-size: 13px; margin: 2px 0 20px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 24px; font-size: 14px; flex: 1; }
.plan li { padding: 6px 0 6px 24px; position: relative; border-top: 1px dashed var(--line); }
.plan li::before { content: "✓"; position: absolute; left: 2px; color: var(--teal); font-weight: 700; }
.plan .inherits { color: var(--gold); font-size: 13px; margin: 0 0 6px; font-weight: 600; }
.plan .btn { width: 100%; }
.faq { max-width: 820px; margin: 64px auto 0; }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 4px; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--gold); font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--muted); margin: 10px 0 0; }