:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --text: #14213d;
  --muted: #65728a;
  --line: #dfe5ef;
  --primary: #0c7c59;
  --primary-dark: #086147;
  --accent: #ffb703;
  --danger: #c93434;
  --success: #0c7c59;
  --shadow: 0 14px 40px rgba(20, 33, 61, .08);
  --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 800; letter-spacing: .2px; }
.logo-mark { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; color: #fff; background: var(--primary); box-shadow: 0 8px 18px rgba(12,124,89,.22); }
.nav { display: flex; align-items: center; gap: 20px; font-size: 15px; }
.nav a { color: #3c4961; }
.nav a:hover { color: var(--primary); }
.header-cta { padding: 9px 15px; color: #fff !important; background: var(--primary); border-radius: 999px; }
.mobile-menu { display: none; border: 0; background: #edf2f7; border-radius: 10px; padding: 8px 11px; font-size: 20px; }
.hero { padding: 78px 0 54px; background: radial-gradient(circle at 88% 8%, rgba(255,183,3,.22), transparent 28%), radial-gradient(circle at 2% 82%, rgba(12,124,89,.12), transparent 32%); }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 42px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; border-radius: 999px; color: var(--primary-dark); background: #e5f5ef; font-weight: 700; font-size: 13px; }
h1 { margin: 18px 0 16px; font-size: clamp(38px, 5.6vw, 66px); line-height: 1.12; letter-spacing: -2px; }
.hero p { color: var(--muted); font-size: 18px; margin: 0 0 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 18px; border: 0; border-radius: 12px; font-size: 15px; font-weight: 800; cursor: pointer; transition: transform .16s ease, box-shadow .16s ease, background .16s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: #fff; background: var(--primary); box-shadow: 0 10px 24px rgba(12,124,89,.22); }
.btn-primary:hover { color: #fff; background: var(--primary-dark); }
.btn-secondary { color: var(--text); background: #fff; border: 1px solid var(--line); }
.hero-card { position: relative; padding: 28px; border: 1px solid rgba(255,255,255,.6); border-radius: 24px; background: rgba(255,255,255,.88); box-shadow: var(--shadow); }
.calc-display { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.metric { padding: 17px; border-radius: 14px; background: #f5f8f7; border: 1px solid #e0ebe7; }
.metric span { display: block; color: var(--muted); font-size: 13px; }
.metric strong { display: block; margin-top: 4px; font-size: 25px; color: var(--primary-dark); }
.metric.negative strong { color: var(--danger); }
.section { padding: 76px 0; }
.section-head { max-width: 720px; margin-bottom: 34px; }
.section-head h2 { margin: 0 0 12px; font-size: clamp(28px, 4vw, 44px); line-height: 1.2; letter-spacing: -1px; }
.section-head p { color: var(--muted); margin: 0; font-size: 17px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.card-icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 13px; background: #e5f5ef; color: var(--primary-dark); font-weight: 900; margin-bottom: 15px; }
.card h3 { margin: 0 0 9px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }
.calculator-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: start; }
.panel { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 8px 28px rgba(20,33,61,.04); }
.panel h3 { margin: 0 0 6px; font-size: 25px; }
.panel > p { margin: 0 0 20px; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.field label { display: block; margin-bottom: 6px; color: #445168; font-size: 13px; font-weight: 700; }
.field input, .field select, .field textarea { width: 100%; padding: 11px 12px; border: 1px solid #cfd8e5; border-radius: 10px; background: #fff; font-size: 15px; color: var(--text); outline: none; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(12,124,89,.12); }
.results { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.result { padding: 16px; border-radius: 14px; background: #f4f7fb; border: 1px solid #e1e8f2; }
.result span { display: block; color: var(--muted); font-size: 13px; }
.result strong { display: block; margin-top: 3px; font-size: 22px; color: var(--primary-dark); }
.result.bad strong { color: var(--danger); }
.notice { margin-top: 14px; padding: 12px 14px; border-radius: 10px; background: #fff8e8; color: #73510b; font-size: 14px; }
.product-band { background: #10243f; color: #fff; }
.product-band .container { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.product-band h2 { margin: 0 0 16px; font-size: clamp(30px, 4.4vw, 48px); line-height: 1.18; }
.product-band p { color: #b9c8dc; }
.price { display: flex; align-items: baseline; gap: 10px; margin: 18px 0; }
.price strong { color: #fff; font-size: 46px; line-height: 1; }
.price del { color: #94a5bd; }
.feature-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.feature-list li::before { content: "✓"; color: #38d89d; font-weight: 900; margin-right: 9px; }
.article-list { display: grid; gap: 14px; }
.article-card { display: grid; grid-template-columns: 1fr auto; gap: 22px; align-items: center; padding: 23px 24px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.article-card h3 { margin: 0 0 6px; font-size: 21px; }
.article-card p { margin: 0; color: var(--muted); }
.article-card span { color: var(--muted); white-space: nowrap; font-size: 14px; }
.article { max-width: 800px; margin: 0 auto; }
.article-header { padding: 54px 0 32px; }
.article-header h1 { font-size: clamp(34px, 5vw, 54px); }
.article-header .meta { color: var(--muted); }
.article-body { padding-bottom: 70px; }
.article-body h2 { margin: 38px 0 12px; font-size: 27px; }
.article-body p { color: #34425a; font-size: 17px; }
.article-cta { margin: 38px 0; padding: 25px; border-radius: 18px; background: #e8f6f1; border: 1px solid #cfe8df; }
.site-footer { padding: 40px 0; border-top: 1px solid var(--line); background: #fff; color: var(--muted); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 28px; }
.site-footer h4 { margin: 0 0 10px; color: var(--text); }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.legal { padding: 42px 0 70px; max-width: 820px; }
.legal h1 { font-size: 40px; }
.legal h2 { margin-top: 30px; }
.legal p, .legal li { color: #3c4961; }
.waitlist { margin-top: 20px; display: grid; gap: 10px; }
.waitlist input { width: 100%; padding: 12px; border: 1px solid #cfd8e5; border-radius: 10px; }
.form-message { min-height: 24px; color: var(--primary-dark); font-size: 14px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
@media (max-width: 900px) {
  .hero-grid, .calculator-grid, .product-band .container { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
  .nav { display: none; position: absolute; left: 16px; right: 16px; top: 60px; padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow); flex-direction: column; align-items: stretch; }
  .nav.open { display: flex; }
  .mobile-menu { display: block; }
}
@media (max-width: 620px) {
  .hero { padding-top: 50px; }
  h1 { letter-spacing: -1px; }
  .section { padding: 54px 0; }
  .cards, .form-grid, .results, .calc-display { grid-template-columns: 1fr; }
  .article-card { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .panel, .hero-card { padding: 20px; }
}
[hidden] { display: none !important; }
.consent-line { display: flex; align-items: flex-start; gap: 10px; color: #34425a; cursor: pointer; }
.consent-line input { width: 18px; height: 18px; margin-top: 3px; flex: none; }
.pay-modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 20px; background: rgba(7, 17, 31, .68); }
.pay-dialog { position: relative; width: min(430px, 100%); padding: 30px; border-radius: 22px; background: #fff; box-shadow: 0 24px 80px rgba(0,0,0,.3); text-align: center; }
.pay-dialog h3 { margin: 0 0 6px; font-size: 22px; }
.pay-close { position: absolute; right: 14px; top: 10px; width: 34px; height: 34px; border: 0; border-radius: 50%; background: #eef2f7; color: #536078; font-size: 24px; line-height: 1; cursor: pointer; }
.pay-amount { margin: 10px 0 20px; color: var(--primary-dark); font-size: 38px; font-weight: 900; }
.pay-qr { width: min(280px, 100%); aspect-ratio: 1; object-fit: contain; padding: 10px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.pay-status { margin: 18px 0 14px; padding: 11px; border-radius: 10px; background: #eef6f3; color: var(--primary-dark); font-weight: 700; }