:root {
  --ink: #17201c;
  --muted: #58645e;
  --brand: #096b54;
  --brand-dark: #075341;
  --brand-soft: #e8f5f0;
  --accent: #c97b21;
  --accent-soft: #fff6e9;
  --line: #dce3df;
  --surface: #ffffff;
  --page: #f5f7f6;
  --danger: #9f3f32;
  --shadow: 0 10px 28px rgba(23, 32, 28, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--page);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  line-height: 1.7;
}
a { color: var(--brand); }
a:hover { color: var(--brand-dark); }
img { display: block; max-width: 100%; }
.shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(820px, calc(100% - 32px)); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
}
.header-row {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  text-decoration: none;
  font-size: 20px;
  font-weight: 800;
  white-space: nowrap;
}
.brand img { width: 38px; height: 38px; }
.brand small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
}
.nav { display: flex; align-items: center; gap: 6px 18px; }
.nav a {
  color: #34413b;
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
}
.nav a:hover,
.nav a[aria-current="page"] { color: var(--brand); font-weight: 700; }
.nav .nav-cta {
  min-height: 38px;
  padding: 6px 13px;
  border-radius: 6px;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
}
.nav .nav-cta:hover { background: var(--brand-dark); color: #fff; }

main { min-height: 65vh; }
.hero-band { background: #fff; border-bottom: 1px solid var(--line); }
.hero {
  min-height: 540px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: center;
  gap: 56px;
  padding: 76px 0 64px;
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}
h1, h2, h3 { color: var(--ink); line-height: 1.28; letter-spacing: 0; }
h1 { margin: 0 0 18px; font-size: 48px; }
h2 { margin: 0 0 16px; font-size: 30px; }
h3 { margin: 0 0 9px; font-size: 20px; }
p { margin: 0 0 14px; }
.lead { max-width: 780px; color: #44514b; font-size: 18px; }
.hero-price { margin: 24px 0 0; color: var(--muted); }
.hero-price strong { color: var(--accent); font-size: 34px; line-height: 1; }
.hero-price span { color: var(--ink); font-weight: 700; }
.button-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 17px;
  border: 1px solid var(--brand);
  border-radius: 6px;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}
.button:hover { background: var(--brand-dark); color: #fff; }
.button.secondary { background: #fff; color: var(--brand-dark); }
.button.secondary:hover { background: var(--brand-soft); }
.button.full { width: 100%; }
.button[aria-disabled="true"] { cursor: not-allowed; opacity: 0.55; }
.identity-panel {
  padding: 28px;
  border-left: 4px solid var(--brand);
  background: var(--brand-soft);
}
.identity-panel img { width: 70px; height: 70px; margin-bottom: 22px; }
.identity-list { margin: 0; }
.identity-list div { padding: 11px 0; border-top: 1px solid rgba(9, 107, 84, 0.16); }
.identity-list dt { color: var(--muted); font-size: 12px; }
.identity-list dd { margin: 2px 0 0; font-weight: 700; }

.section { padding: 60px 0; }
.section.white { background: #fff; }
.section-header { max-width: 760px; margin-bottom: 30px; }
.section-header p { color: var(--muted); }
.feature-grid,
.plan-grid,
.process-grid,
.fact-grid { display: grid; gap: 18px; }
.feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.feature {
  padding: 0 24px 0 0;
  border-right: 1px solid var(--line);
}
.feature:last-child { border-right: 0; }
.feature p { color: var(--muted); font-size: 15px; }
.plan-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: stretch; }
.plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.plan-card.recommended { border: 2px solid var(--brand); box-shadow: var(--shadow); }
.plan-badge {
  align-self: flex-start;
  margin-bottom: 16px;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 800;
}
.price { margin: 12px 0 4px; color: var(--ink); font-size: 42px; font-weight: 800; line-height: 1; }
.price small { font-size: 15px; font-weight: 600; }
.quota { color: var(--brand-dark); font-weight: 700; }
.plan-card ul { flex: 1; margin: 18px 0 22px; padding-left: 20px; color: var(--muted); }
.plan-card li { margin: 7px 0; }
.process-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); counter-reset: process; }
.process-step { position: relative; padding-top: 44px; }
.process-step::before {
  counter-increment: process;
  content: counter(process, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  color: var(--accent);
  font-size: 22px;
  font-weight: 800;
}
.process-step::after {
  content: "";
  position: absolute;
  top: 17px;
  left: 42px;
  right: 16px;
  height: 1px;
  background: var(--line);
}
.process-step:last-child::after { display: none; }
.process-step p { color: var(--muted); font-size: 14px; }

.page-head { padding: 58px 0 32px; background: #fff; border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: 40px; }
.page-content { padding: 38px 0 64px; }
.content-section { padding: 30px 0; border-bottom: 1px solid var(--line); }
.content-section:first-child { padding-top: 0; }
.content-section:last-child { border-bottom: 0; }
.content-section ul,
.content-section ol { margin: 10px 0 0; padding-left: 23px; }
.content-section li { margin: 7px 0; }
.content-section p,
.content-section li { color: #44514b; }
.notice {
  margin: 22px 0 0;
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  color: #654819;
}
.notice strong { color: #49320f; }
.status-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-dark);
  font-weight: 700;
}
.status-line::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--brand); }
.fact-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.fact { padding: 18px 0; border-top: 2px solid var(--brand); }
.fact span { display: block; color: var(--muted); font-size: 13px; }
.fact strong { display: block; margin-top: 4px; font-size: 17px; }
.purchase-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 36px;
  align-items: start;
}
.summary-box { padding: 24px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.summary-box dl { margin: 0; }
.summary-box div { display: flex; justify-content: space-between; gap: 20px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.summary-box div:last-child { border-bottom: 0; }
.summary-box dt { color: var(--muted); }
.summary-box dd { margin: 0; text-align: right; font-weight: 700; }
.summary-total { color: var(--accent); font-size: 24px; }
.mail-template { padding: 20px; border: 1px solid var(--line); background: #fff; white-space: pre-line; color: #44514b; }
.legal-meta { color: var(--muted); font-size: 14px; }
.legal h2 { margin-top: 32px; font-size: 24px; }
.legal h3 { margin-top: 24px; font-size: 18px; }
.legal ul,
.legal ol { padding-left: 23px; }
.legal li { margin: 7px 0; }

.footer { padding: 34px 0; border-top: 1px solid var(--line); background: #fff; color: var(--muted); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 28px; align-items: flex-start; }
.footer .company { color: var(--ink); font-weight: 700; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px 16px; }
.footer a { text-decoration: none; }

@media (max-width: 900px) {
  .header-row { min-height: auto; padding: 15px 0; align-items: flex-start; flex-direction: column; gap: 12px; }
  .nav { width: 100%; overflow-x: auto; padding-bottom: 4px; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 34px; padding: 52px 0; }
  h1 { font-size: 40px; }
  .process-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
  .process-step::after { display: none; }
}

@media (max-width: 680px) {
  .shell, .narrow { width: min(100% - 24px, 1120px); }
  .site-header { position: static; }
  .brand { font-size: 18px; }
  .brand img { width: 34px; height: 34px; }
  .nav { gap: 12px; }
  .nav .nav-cta { min-height: auto; padding: 0; background: transparent; color: var(--brand); }
  .nav .nav-cta:hover { background: transparent; color: var(--brand-dark); }
  .hero { padding: 40px 0; }
  h1, .page-head h1 { font-size: 32px; }
  h2 { font-size: 25px; }
  .lead { font-size: 16px; }
  .identity-panel { padding: 22px; }
  .section { padding: 44px 0; }
  .feature-grid, .plan-grid, .fact-grid, .process-grid, .purchase-summary { grid-template-columns: 1fr; }
  .feature { padding: 0 0 20px; border-right: 0; border-bottom: 1px solid var(--line); }
  .feature:last-child { padding-bottom: 0; border-bottom: 0; }
  .price { font-size: 38px; }
  .footer-row { flex-direction: column; }
  .footer-links { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}