:root {
  --ink: #1a1a1a;
  --paper: #faf8f3;
  --muted: #8a8a8a;
  --line: #ded8cf;
  --seal: #c53030;
  --white: #fffdfa;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6vw;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: "Noto Serif SC", "PingFang SC", serif;
  font-size: 20px;
  letter-spacing: 0;
}

.brand__mark {
  width: 32px;
  height: 32px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.site-nav a:hover,
.site-footer a:hover {
  color: var(--seal);
}

.lang-toggle {
  min-height: 30px;
  padding: 4px 12px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
}

.lang-toggle:hover {
  background: var(--ink);
  color: var(--paper);
}

.hero {
  min-height: calc(100vh - 144px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(260px, 0.95fr);
  align-items: center;
  gap: 8vw;
  padding: 72px 8vw 88px;
  border-bottom: 1px solid var(--line);
}

.hero__copy {
  max-width: 760px;
}

.eyebrow,
.section-kicker,
.price-card__label,
.process-step span {
  margin: 0 0 16px;
  color: var(--seal);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Noto Serif SC", "PingFang SC", serif;
  font-weight: 500;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  font-size: clamp(42px, 7vw, 92px);
  line-height: 1.08;
}

h2 {
  font-size: clamp(30px, 4vw, 56px);
  line-height: 1.15;
}

h3 {
  font-size: 22px;
  line-height: 1.25;
}

.hero__subtitle {
  max-width: 560px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 22px);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
}

.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}

.btn--primary,
.btn:hover {
  background: var(--ink);
  color: var(--paper);
}

.btn--primary:hover {
  background: transparent;
  color: var(--ink);
}

.btn--disabled,
.btn--disabled:hover {
  border-color: var(--line);
  background: var(--line);
  color: var(--muted);
  cursor: not-allowed;
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__visual img {
  width: min(44vw, 320px);
  min-width: 220px;
}

.process,
.features,
.pricing,
.policy {
  padding: 88px 8vw;
  border-bottom: 1px solid var(--line);
}

.process__grid,
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 44px;
  background: var(--line);
  border: 1px solid var(--line);
}

.pricing__grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.process-step,
.price-card {
  min-height: 260px;
  padding: 34px;
  background: var(--paper);
}

.process-step img {
  width: 72px;
  height: 72px;
  margin-bottom: 28px;
}

.process-step p,
.price-card p,
.feature-row p,
.policy p,
.policy li {
  color: var(--muted);
}

.feature-list {
  margin-top: 44px;
  border-top: 1px solid var(--line);
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.38fr) minmax(0, 1fr);
  gap: 32px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.feature-row p,
.price-card p {
  margin: 0;
}

.price-card--accent {
  background: var(--white);
}

.price-card h3 {
  margin-bottom: 16px;
}

.price-card .btn {
  margin-top: 32px;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 24px;
  padding: 28px 6vw;
  color: var(--muted);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.policy {
  min-height: calc(100vh - 72px);
}

.policy__content {
  max-width: 880px;
  margin: 0 auto;
}

.policy h1 {
  margin-bottom: 40px;
}

.policy h2 {
  margin-top: 36px;
  font-size: 24px;
}

.policy hr {
  margin: 56px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

@media (max-width: 820px) {
  .site-header,
  .site-footer {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding: 22px 6vw;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 56px 7vw 72px;
  }

  .hero__visual {
    justify-content: flex-start;
  }

  .hero__visual img {
    width: 220px;
    min-width: 0;
  }

  .process,
  .features,
  .pricing,
  .policy {
    padding: 64px 7vw;
  }

  .process__grid,
  .pricing__grid,
  .feature-row {
    grid-template-columns: 1fr;
  }

  .process-step,
  .price-card {
    min-height: 0;
    padding: 28px;
  }

  .feature-row {
    gap: 8px;
  }
}