:root {
  --ink: #151922;
  --muted: #626b7a;
  --line: #dfe3ea;
  --surface: #f5f7fa;
  --accent: #1769e0;
  --accent-dark: #0f4da8;
  --white: #ffffff;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.7; }
a { color: inherit; }
button, input { font: inherit; }
.site-header { min-height: 72px; padding: 14px max(24px, calc((100vw - 1180px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 28px; border-bottom: 1px solid var(--line); background: var(--white); }
.site-header.compact { min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; }
.brand > span:last-child { display: grid; line-height: 1.2; }
.brand strong { font-size: 17px; }
.brand small { margin-top: 4px; color: var(--muted); font-size: 9px; letter-spacing: .12em; }
.brand-grid { width: 34px; height: 34px; padding: 4px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; border-radius: 8px; background: var(--ink); }
.brand-grid i { border-radius: 2px; background: var(--white); }
.brand-grid i:nth-child(2), .brand-grid i:nth-child(5), .brand-grid i:nth-child(8) { background: #55a0ff; }
nav { display: flex; gap: 26px; }
nav a { color: var(--muted); font-size: 14px; text-decoration: none; }
nav a:hover, nav a:focus-visible { color: var(--accent); }
main { width: min(1180px, calc(100% - 48px)); margin: auto; }
.hero { min-height: 540px; display: grid; grid-template-columns: 1.35fr .65fr; align-items: center; gap: 9vw; border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 12px; color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: .08em; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 760px; margin-bottom: 24px; font-size: clamp(42px, 6vw, 72px); line-height: 1.12; letter-spacing: -.05em; }
.hero > div > p:not(.eyebrow) { max-width: 570px; margin-bottom: 30px; color: var(--muted); font-size: 17px; }
.hero-note { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.hero-note > strong { display: block; margin-bottom: 18px; font-size: 18px; }
.hero-note dl { margin: 0; }
.hero-note dl div { padding: 13px 0; display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); }
.hero-note dt { color: var(--muted); }
.hero-note dd { margin: 0; font-weight: 700; text-align: right; }
.button { min-height: 46px; padding: 11px 20px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--accent); border-radius: 10px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.button:active { transform: translateY(1px); }
.button.primary { color: var(--white); background: var(--accent-dark); }
.button.secondary { color: var(--accent-dark); background: var(--white); }
.button:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid rgba(23, 105, 224, .25); outline-offset: 3px; }
.section { padding: 96px 0; }
.section-heading { max-width: 680px; margin-bottom: 42px; }
.section-heading h2, .paywall h2 { margin-bottom: 14px; font-size: clamp(30px, 4vw, 46px); line-height: 1.15; letter-spacing: -.035em; }
.section-heading > p:last-child, .paywall-copy > p { color: var(--muted); }
.portfolio-section { padding-top: 40px; }
.portfolio-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 34px 24px; }
.portfolio-item { grid-column: span 5; margin: 0; }
.portfolio-item.portfolio-wide { grid-column: span 7; }
.portfolio-item img { width: 100%; aspect-ratio: 4 / 3; display: block; object-fit: cover; border-radius: var(--radius); background: var(--surface); }
.portfolio-item figcaption { padding-top: 14px; display: flex; justify-content: space-between; gap: 20px; align-items: baseline; }
.portfolio-item figcaption strong { font-size: 17px; }
.portfolio-item figcaption span { color: var(--muted); font-size: 13px; text-align: right; }
.pattern-list { border-top: 1px solid var(--line); }
.pattern-row { min-height: 88px; padding: 18px 4px; display: grid; grid-template-columns: 54px minmax(220px, 1.5fr) 1fr 1fr auto; align-items: center; gap: 20px; border-bottom: 1px solid var(--line); text-decoration: none; }
.pattern-row:hover, .pattern-row:focus-visible { background: var(--surface); }
.pattern-index, .pattern-meta, .pattern-title small { color: var(--muted); font-size: 13px; }
.pattern-title { display: grid; }
.pattern-title strong { font-size: 17px; }
.pattern-row > b { color: var(--accent-dark); font-size: 13px; }
.pattern-row.is-free { background: rgba(23, 105, 224, .045); }
.pattern-row.is-free > b { padding: 3px 8px; border: 1px solid rgba(23, 105, 224, .28); border-radius: 8px; background: var(--white); }
.plans-section { border-top: 1px solid var(--line); }
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.plan { padding: 30px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); }
.plan.featured { border: 2px solid var(--accent); }
.plan > p { margin-bottom: 4px; color: var(--muted); }
.plan h3 { margin-bottom: 20px; font-size: 36px; letter-spacing: -.04em; }
.plan ul { min-height: 92px; margin: 0 0 24px; padding-left: 20px; color: var(--muted); }
.plan .button { margin-top: auto; }
.afdian-panel { margin: 0 0 32px; padding: 34px 38px; display: flex; align-items: center; justify-content: space-between; gap: 36px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.afdian-panel h2 { margin-bottom: 10px; font-size: clamp(26px, 3vw, 38px); line-height: 1.2; letter-spacing: -.03em; }
.afdian-panel p:last-child { max-width: 720px; margin-bottom: 0; color: var(--muted); }
.service-strip { margin-bottom: 80px; padding: 22px 26px; display: flex; justify-content: space-between; gap: 24px; border-radius: var(--radius); background: var(--surface); color: var(--muted); font-size: 13px; }
.checkout-page { padding: 72px 0 100px; }
.checkout-intro { max-width: 880px; margin-bottom: 44px; }
.checkout-intro h1 { margin-bottom: 18px; font-size: clamp(36px, 5vw, 62px); }
.checkout-intro > p:last-of-type { color: var(--muted); }
.deliverables { display: flex; flex-wrap: wrap; gap: 10px; }
.deliverables span { padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); font-size: 13px; }
.paywall { padding: 38px; display: grid; grid-template-columns: 1fr 330px; gap: 52px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.option-list { margin: 28px 0 20px; display: grid; gap: 10px; }
.pay-option { width: 100%; padding: 16px; display: flex; align-items: center; justify-content: space-between; gap: 18px; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); background: var(--white); text-align: left; cursor: pointer; }
.pay-option.is-selected { border: 2px solid var(--accent); }
.pay-option span { display: grid; }
.pay-option small { margin-top: 3px; color: var(--muted); }
.pay-option b { color: var(--accent-dark); font-size: 18px; }
.order-summary { padding: 16px 0; display: grid; grid-template-columns: 1fr auto; gap: 2px 20px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.order-summary span { grid-column: 1 / -1; color: var(--muted); font-size: 12px; }
.order-summary b { color: var(--accent-dark); font-size: 22px; }
.agreement { margin: 16px 0 0; font-size: 12px; }
.agreement a { color: var(--accent-dark); }
.qr-box { padding: 28px; display: flex; flex-direction: column; align-items: center; justify-content: center; border: 1px dashed #aab2c0; border-radius: var(--radius); background: var(--white); text-align: center; }
.payment-qr { width: min(100%, 260px); height: auto; margin-bottom: 20px; display: block; border: 1px solid var(--line); border-radius: 12px; }
.qr-placeholder { width: 154px; aspect-ratio: 1; margin-bottom: 20px; padding: 18px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; border: 8px solid var(--ink); }
.qr-placeholder span { background: var(--ink); }
.qr-placeholder span:nth-child(2), .qr-placeholder span:nth-child(4), .qr-placeholder span:nth-child(8) { background: var(--white); }
.qr-box p { margin: 6px 0 0; color: var(--muted); font-size: 12px; }
.free-pattern { padding: 38px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.free-pattern[hidden], .paywall[hidden] { display: none; }
.free-pattern-header { margin-bottom: 32px; display: grid; grid-template-columns: 1fr minmax(240px, 420px); gap: 48px; align-items: end; }
.free-pattern-header h2 { margin-bottom: 0; font-size: clamp(30px, 4vw, 46px); line-height: 1.15; letter-spacing: -.035em; }
.free-pattern-header > p { margin-bottom: 3px; color: var(--muted); }
.pattern-workspace { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(300px, .55fr); gap: 28px; align-items: start; }
.bead-sheet { min-width: 0; margin: 0; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.bead-sheet-scroll { width: 100%; max-width: 100%; overflow: auto; border: 1px solid var(--line); background: var(--white); }
.bead-sheet canvas { width: 100%; min-width: 820px; height: auto; display: block; }
.bead-sheet-actions { padding: 14px 4px 0; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.bead-sheet figcaption { color: var(--muted); font-size: 12px; }
.bead-sheet-actions .button { min-height: 38px; padding: 7px 12px; font-size: 12px; }
.material-panel { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.material-panel h3, .build-guide h3 { margin-bottom: 18px; font-size: 18px; }
.material-list { display: grid; gap: 2px; }
.material-row { min-height: 62px; padding: 10px 0; display: grid; grid-template-columns: 18px 1fr auto auto; gap: 12px; align-items: center; border-bottom: 1px solid var(--line); }
.material-row:last-child { border-bottom: 0; }
.material-row i { width: 16px; height: 16px; display: block; border: 1px solid rgba(21, 25, 34, .18); border-radius: 50%; background: var(--swatch); }
.material-row span { min-width: 58px; display: grid; line-height: 1.25; }
.material-row span:nth-last-child(-n+2) { text-align: right; }
.material-row small { color: var(--muted); font-size: 10px; }
.material-row b { font-size: 16px; }
.material-note { margin: 16px 0 0; color: var(--muted); font-size: 11px; }
.build-guide { margin-top: 28px; display: grid; grid-template-columns: 1.35fr .65fr; gap: 28px; }
.build-guide > section { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.build-guide ol { margin: 0; padding-left: 22px; color: var(--muted); }
.build-guide li + li { margin-top: 10px; }
.time-card dl { margin: 0; }
.time-card dl div { padding: 10px 0; display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); }
.time-card dt { color: var(--muted); }
.time-card dd { margin: 0; font-weight: 700; text-align: right; }
.ironing-note { margin-top: 28px; padding: 22px 26px; border-left: 4px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0; background: var(--white); }
.ironing-note p { margin: 4px 0 0; color: var(--muted); }
.legal-page { max-width: 850px; padding: 72px 0 100px; }
.legal-page > header { margin-bottom: 56px; }
.legal-page h1 { font-size: clamp(38px, 5vw, 58px); }
.legal-page section { padding: 30px 0; border-top: 1px solid var(--line); }
.legal-page section h2 { margin-bottom: 12px; font-size: 24px; }
.legal-page section p { color: var(--muted); }
footer { padding: 40px max(24px, calc((100vw - 1180px) / 2)); display: grid; grid-template-columns: 1fr auto; gap: 18px 40px; border-top: 1px solid var(--line); }
footer p { margin-bottom: 0; color: var(--muted); font-size: 13px; }
footer div:nth-child(2) { display: flex; gap: 20px; }
footer div:nth-child(2) a { color: var(--muted); font-size: 13px; }
.contact { grid-column: 1 / -1; }

@media (max-width: 800px) {
  .site-header { align-items: flex-start; }
  nav { gap: 14px; flex-wrap: wrap; justify-content: flex-end; }
  main { width: min(100% - 32px, 1180px); }
  .hero { min-height: auto; padding: 72px 0; grid-template-columns: 1fr; gap: 42px; }
  h1 { font-size: 44px; }
  .section { padding: 72px 0; }
  .portfolio-section { padding-top: 24px; }
  .portfolio-grid { grid-template-columns: 1fr; gap: 32px; }
  .portfolio-item, .portfolio-item.portfolio-wide { grid-column: 1; }
  .portfolio-item figcaption { align-items: flex-start; flex-direction: column; gap: 4px; }
  .portfolio-item figcaption span { text-align: left; }
  .pattern-row { grid-template-columns: 38px 1fr auto; gap: 12px; }
  .pattern-meta { display: none; }
  .plan-grid, .paywall, .free-pattern-header, .pattern-workspace, .build-guide { grid-template-columns: 1fr; }
  .afdian-panel { padding: 28px 24px; align-items: flex-start; flex-direction: column; gap: 22px; }
  .paywall { padding: 24px; gap: 30px; }
  .free-pattern { padding: 24px; }
  .free-pattern-header { gap: 12px; }
  .pattern-workspace, .build-guide { gap: 20px; }
  .bead-sheet-actions { align-items: flex-start; flex-direction: column; }
  .service-strip { flex-direction: column; gap: 8px; }
  footer { grid-template-columns: 1fr; }
  footer div:nth-child(2) { flex-wrap: wrap; }
  .contact { grid-column: auto; }
}

@media (max-width: 520px) {
  .site-header { display: grid; }
  nav { justify-content: flex-start; }
  h1 { font-size: 38px; }
  .pattern-row { min-height: 82px; }
  .pattern-row > b { max-width: 54px; text-align: right; }
  .checkout-page { padding-top: 52px; }
}