:root {
  --bg: #f3efe6;
  --bg-accent: #e7f0e6;
  --card: #fffdf8;
  --ink: #1c2b22;
  --muted: #5d6b62;
  --line: #e4ddd0;
  --brand: #2d6a4f;
  --brand-soft: #e6f3eb;
  --brand-ink: #f4fff8;
  --clay: #8a5a3a;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --radius: 16px;
  --shadow: 0 1px 2px rgb(28 43 34 / 5%), 0 10px 28px rgb(28 43 34 / 6%);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141a16;
    --bg-accent: #1a2420;
    --card: #1c2420;
    --ink: #eef4ef;
    --muted: #9aa89f;
    --line: #2c3831;
    --brand: #6fbf93;
    --brand-soft: #22362c;
    --brand-ink: #102018;
    --clay: #d4a574;
    --danger: #f97066;
    --danger-soft: #3a1d1a;
    --shadow: 0 1px 2px rgb(0 0 0 / 25%), 0 12px 32px rgb(0 0 0 / 28%);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  position: relative;
  background:
    radial-gradient(1200px 500px at 10% -10%, var(--bg-accent), transparent 55%),
    radial-gradient(800px 400px at 110% 0%, #efe4d4, transparent 50%),
    var(--bg);
  color: var(--ink);
  font-family: "Source Sans 3", "Source Han Sans SC", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
  body {
    background:
      radial-gradient(1200px 500px at 10% -10%, var(--bg-accent), transparent 55%),
      radial-gradient(800px 400px at 110% 0%, #2a2218, transparent 50%),
      var(--bg);
  }
}

body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.32;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 140 140' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.28'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
  z-index: 0;
}

@media (prefers-color-scheme: dark) {
  body::before {
    opacity: 0.16;
    mix-blend-mode: overlay;
  }
}

a { color: var(--brand); }

.page {
  position: relative;
  z-index: 1;
}

.wrap {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 0 0.4rem;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  text-decoration: none;
  color: inherit;
}

.kicker {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand);
}

.brand strong {
  font-family: Fraunces, "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: 1.15rem;
  font-weight: 600;
}

.nav-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.55rem 1rem;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.btn:hover { transform: translateY(-1px); }

.btn:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

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

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

html.signed-in .for-guest { display: none; }
html:not(.signed-in) .for-member { display: none; }

.hero {
  display: grid;
  gap: 1.6rem;
  padding: 2.4rem 0 1.2rem;
}

.hero h1 {
  margin: 0;
  max-width: 16ch;
  font-family: Fraunces, "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: clamp(2.4rem, 7vw, 4.4rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.lede {
  margin: 0;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.notice {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 1rem 1.1rem;
  border: 1px solid color-mix(in srgb, var(--clay) 35%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--clay) 10%, var(--card));
}

.notice svg {
  flex: 0 0 auto;
  margin-top: 0.15rem;
  color: var(--clay);
}

.notice strong {
  display: block;
  margin-bottom: 0.2rem;
}

.notice p {
  margin: 0;
  color: var(--ink);
  font-size: 0.95rem;
}

.section {
  padding: 1.6rem 0 0.4rem;
}

.section h2 {
  margin: 0 0 0.35rem;
  font-family: Fraunces, "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.section-desc {
  margin: 0 0 1.1rem;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.card {
  padding: 1.15rem 1.15rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0.7rem 0 0.35rem;
  font-family: Fraunces, "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: 1.15rem;
  font-weight: 600;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 12px;
  background: var(--brand-soft);
  color: var(--brand);
}

.plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
}

.plan {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.plan.featured {
  border-color: color-mix(in srgb, var(--brand) 45%, var(--line));
  background: color-mix(in srgb, var(--brand-soft) 55%, var(--card));
}

.plan-tag {
  display: inline-flex;
  align-self: flex-start;
  margin-bottom: 0.55rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: var(--brand);
  color: var(--brand-ink);
  font-size: 0.72rem;
  font-weight: 700;
}

.plan h3 {
  margin: 0;
}

.price {
  margin: 0.7rem 0 0.15rem;
  font-family: Fraunces, "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.price small {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
}

/* 当前活动横幅 */
.offers {
  display: grid;
  gap: 0.85rem;
  margin: 0 0 1.15rem;
  padding: 1rem 1.05rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--brand) 32%, var(--line));
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 10%, var(--card)) 0%, color-mix(in srgb, var(--clay) 9%, var(--card)) 100%);
  box-shadow: var(--shadow);
}

.offers-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.65rem;
}

.offers-badge {
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: var(--brand);
  color: var(--brand-ink);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.offers-head strong {
  font-family: Fraunces, "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: 1.06rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.offers-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.offer {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.6rem 0.7rem;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--line);
}

.offer-ico {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.3rem;
  height: 2.3rem;
  padding: 0 0.45rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand) 14%, var(--card));
  color: var(--brand);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.offer-txt strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
}

.offer-txt small {
  display: block;
  margin-top: 0.1rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.4;
}

.plan ul {
  margin: 0.85rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.plan li { margin: 0.28rem 0; }

.pay-note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.step-num {
  font-family: Fraunces, "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: 1.6rem;
  color: var(--brand);
}

.site-footer {
  padding: 2.4rem 0 2.8rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer .card {
  padding: 1.2rem 1.2rem 1.3rem;
}

.foot-grid {
  display: grid;
  gap: 0.35rem;
}

.foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
  margin-top: 0.85rem;
}

.en {
  margin-top: 1.1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

@media (max-width: 860px) {
  .grid,
  .plans,
  .steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .offers-list {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 1.6rem;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-actions {
    width: 100%;
  }

  .nav-actions .btn {
    flex: 1 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
  .btn:hover { transform: none; }
}