:root {
  --jade-950: #073e39;
  --jade-900: #0a514a;
  --jade-800: #0b645b;
  --jade-700: #147a6e;
  --jade-100: #dff2ed;
  --jade-50: #f3faf8;
  --gold: #d5a04f;
  --gold-soft: #ffe8bd;
  --ink: #172b28;
  --muted: #667b77;
  --paper: #fffdf8;
  --line: rgba(12, 83, 75, .14);
  --danger: #c74444;
  --shadow: 0 22px 60px rgba(5, 55, 49, .12);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: linear-gradient(180deg, #f5faf8 0, #fffdf9 48%, #f1f8f5 100%);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button, a, input { outline-offset: 3px; }
.shell { width: min(1120px, calc(100% - 40px)); margin: auto; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, .9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.nav-inner { min-height: 74px; display: flex; align-items: center; gap: 26px; }
.brand { display: flex; align-items: center; gap: 11px; margin-right: auto; color: var(--jade-900); font-size: 18px; font-weight: 900; }
.brand img { width: 42px; height: 42px; border-radius: 13px; box-shadow: 0 8px 18px rgba(8, 87, 78, .15); }
.nav-links { display: flex; align-items: center; gap: 23px; color: #48645f; font-size: 14px; font-weight: 700; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--jade-700); }

.button {
  display: inline-flex;
  min-height: 46px;
  padding: 0 22px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 800;
  transition: transform .2s ease, box-shadow .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button:disabled { cursor: not-allowed; opacity: .55; transform: none; }
.button.primary { color: #fff; background: linear-gradient(135deg, var(--jade-700), var(--jade-900)); box-shadow: 0 12px 26px rgba(7, 91, 82, .2); }
.button.gold { color: #174a43; background: linear-gradient(135deg, #ffe19e, #e5ab52); }
.button.secondary { color: var(--jade-800); background: #fff; border-color: rgba(10, 100, 91, .24); }
.button.full { width: 100%; }

.page-hero { position: relative; overflow: hidden; padding: 76px 0 72px; color: #fff; background: radial-gradient(circle at 85% 0, rgba(255, 224, 150, .25), transparent 30%), linear-gradient(135deg, #073f3a, #0b675d 62%, #3d927d); }
.page-hero::after { content: ""; position: absolute; width: 410px; height: 410px; right: -170px; bottom: -300px; border: 1px solid rgba(255, 255, 255, .12); border-radius: 50%; }
.page-hero .shell { position: relative; z-index: 1; }
.kicker { color: #ffdf9c; font-size: 12px; font-weight: 900; letter-spacing: .16em; }
.page-hero h1 { max-width: 780px; margin: 12px 0 14px; font-size: clamp(38px, 6vw, 58px); line-height: 1.2; }
.page-hero p { max-width: 760px; margin: 0; color: #cbe7e1; font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.content { padding: 72px 0 24px; }
.section { margin-bottom: 54px; }
.section-head { max-width: 760px; margin-bottom: 28px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { margin: 6px 0 8px; font-size: clamp(27px, 4vw, 40px); line-height: 1.3; }
.section-head p, .muted { color: var(--muted); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { padding: 28px; border: 1px solid var(--line); border-radius: 22px; background: rgba(255, 255, 255, .9); box-shadow: 0 12px 34px rgba(8, 69, 61, .06); }
.card h2, .card h3 { margin-top: 0; }
.icon { display: grid; width: 48px; height: 48px; margin-bottom: 17px; place-items: center; border-radius: 15px; color: var(--jade-800); background: var(--jade-100); font-weight: 900; }
.clean-list { margin: 0; padding: 0; list-style: none; }
.clean-list li { position: relative; padding: 8px 0 8px 28px; }
.clean-list li::before { content: "✓"; position: absolute; left: 0; top: 10px; display: grid; width: 18px; height: 18px; place-items: center; border-radius: 50%; color: var(--jade-800); background: var(--jade-100); font-size: 11px; font-weight: 900; }
.notice { padding: 20px 22px; border: 1px solid rgba(208, 153, 65, .25); border-radius: 17px; color: #6c5737; background: #fff9ed; }
.document { max-width: 860px; }
.document h2 { margin-top: 42px; font-size: 23px; }
.document h3 { margin-top: 28px; }
.document p, .document li { color: #405954; }
.document a { color: var(--jade-700); text-decoration: underline; }

.price-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.plan { position: relative; cursor: pointer; }
.plan input { position: absolute; opacity: 0; pointer-events: none; }
.plan-body { min-height: 220px; padding: 27px; border: 2px solid var(--line); border-radius: 22px; background: #fff; transition: .2s ease; }
.plan input:checked + .plan-body { border-color: #e0a13f; background: #fff9ed; box-shadow: 0 16px 35px rgba(185, 124, 34, .13); }
.plan-name { font-size: 20px; font-weight: 900; }
.price { margin: 8px 0 13px; color: #c98225; font-size: 38px; font-weight: 900; }
.price small { font-size: 14px; }
.buy-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 22px; align-items: start; }
.buy-panel { position: sticky; top: 96px; }
.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; padding: 5px; border-radius: 999px; background: #edf5f2; }
.tab { min-height: 40px; border: 0; border-radius: 999px; color: #57706b; background: transparent; cursor: pointer; font-weight: 800; }
.tab.active { color: #fff; background: var(--jade-700); }
.form { display: grid; gap: 13px; margin-top: 20px; }
.field-label { display: grid; gap: 7px; color: #39534e; font-size: 13px; font-weight: 700; }
.input { width: 100%; min-height: 50px; padding: 0 15px; border: 1px solid #d4e2de; border-radius: 13px; color: var(--ink); background: #fbfdfc; }
.input:focus { border-color: var(--jade-700); box-shadow: 0 0 0 3px rgba(20, 122, 110, .1); }
.status { display: none; margin-top: 15px; padding: 12px 14px; border-radius: 12px; font-size: 13px; }
.status.show { display: block; }
.status.error { color: #8a3030; background: #fff0f0; }
.status.success { color: #0b645b; background: #e7f6f1; }
.account-bar { display: none; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; padding: 13px 15px; border-radius: 14px; background: var(--jade-50); }
.account-bar.show { display: flex; }
.pay-method { display: flex; align-items: center; justify-content: space-between; margin: 18px 0; padding: 15px 17px; border: 1px solid #d6e3df; border-radius: 14px; background: #fff; }
.pay-mark { display: inline-grid; width: 32px; height: 32px; margin-right: 9px; place-items: center; border-radius: 9px; color: #fff; background: #1677ff; font-weight: 900; }
.comparison { width: 100%; border-collapse: separate; border-spacing: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.comparison th, .comparison td { padding: 15px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: center; }
.comparison th:first-child, .comparison td:first-child { text-align: left; }
.comparison tr:last-child td { border-bottom: 0; }
.comparison th:last-child, .comparison td:last-child { border-right: 0; }
.comparison th { color: var(--jade-900); background: var(--jade-50); }

.contact-line { display: flex; align-items: flex-start; gap: 14px; }
.contact-line + .contact-line { margin-top: 18px; }
.contact-line strong { display: block; }
.contact-line p { margin: 2px 0 0; color: var(--muted); }

.site-footer { margin-top: 70px; padding: 38px 0; color: #a7c8c1; background: #072e2a; font-size: 13px; }
.footer-inner { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 34px; }
.footer-title { color: #fff; font-weight: 900; }
.footer-group { display: grid; align-content: start; gap: 7px; }
.footer-group a:hover { color: #fff; }
.footer-legal { margin-top: 25px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .1); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .buy-layout { grid-template-columns: 1fr; }
  .buy-panel { position: static; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .shell { width: min(100% - 28px, 1120px); }
  .nav-inner { min-height: 66px; }
  .brand { font-size: 16px; }
  .brand img { width: 38px; height: 38px; }
  .site-nav .button { min-height: 40px; padding: 0 15px; }
  .page-hero { padding: 56px 0; }
  .page-hero p { font-size: 15px; }
  .content { padding-top: 50px; }
  .grid-2, .grid-3, .price-grid { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .comparison { font-size: 12px; }
  .comparison th, .comparison td { padding: 11px 7px; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-legal { display: grid; }
}