:root {
  --landing-bg: #0b1120;
  --landing-surface: #162033;
  --landing-surface-elevated: #1b273b;
  --landing-soft: #202c40;
  --landing-warm: #2a271f;
  --landing-text: #f8fafc;
  --landing-text-soft: #dbe4ef;
  --landing-muted: #a7b0be;
  --landing-border: #334155;
  --landing-gold: #ffc233;
  --landing-gold-hover: #ffd166;
  --landing-gold-soft: #3b321a;
  --landing-shadow: 0 20px 52px rgba(0, 0, 0, 0.34);
  --landing-shadow-soft: 0 10px 26px rgba(0, 0, 0, 0.24);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.tsumu-landing-page {
  margin: 0;
  color: var(--landing-text);
  background:
    radial-gradient(circle at 90% 4%, rgba(255, 194, 51, 0.11), transparent 24rem),
    radial-gradient(circle at 4% 86%, rgba(255, 255, 255, 0.025), transparent 28rem),
    var(--landing-bg);
}
body.tsumu-landing-page a { color: inherit; text-decoration: none; }
body.tsumu-landing-page img { display: block; max-width: 100%; }
.landing-shell { overflow: hidden; }
.landing-container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.landing-header {
  position: sticky;
  z-index: 40;
  top: 0;
  border-bottom: 1px solid var(--landing-border);
  background: color-mix(in srgb, var(--landing-bg) 88%, transparent);
  backdrop-filter: blur(16px);
}
.landing-nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  min-height: 84px;
  align-items: center;
  gap: 24px;
}
.landing-brand img { width: 156px; height: 46px; object-fit: contain; }
.landing-links { display: flex; justify-content: center; gap: 28px; color: var(--landing-muted); font-size: 14px; font-weight: 800; }
.landing-links a:hover { color: var(--landing-gold); }
.landing-actions { display: flex; align-items: center; gap: 10px; }

.landing-language { position: relative; }
.landing-language-button {
  display: flex;
  min-width: 148px;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--landing-border);
  border-radius: 12px;
  color: var(--landing-text);
  background: var(--landing-surface);
  font: inherit;
  font-size: 13px;
  font-weight: 900;
  cursor: pointer;
}
.landing-language-button:hover,
.landing-language-button[aria-expanded="true"] { border-color: rgba(255, 194, 51, 0.5); background: var(--landing-surface-elevated); }
.landing-language-button .chevron { color: var(--landing-gold); transition: transform 0.18s ease; }
.landing-language-button[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.landing-language-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  display: none;
  width: 220px;
  padding: 7px;
  border: 1px solid var(--landing-border);
  border-radius: 14px;
  background: var(--landing-surface-elevated);
  box-shadow: var(--landing-shadow-soft);
}
.landing-language-menu.is-open { display: grid; }
.landing-language-option {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border: 0;
  border-radius: 10px;
  color: var(--landing-text-soft);
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.landing-language-option:hover { background: var(--landing-soft); }
.landing-language-option.is-active { color: var(--landing-gold); background: var(--landing-gold-soft); }
.landing-language-option small { color: var(--landing-muted); }
.landing-language-option .check { color: var(--landing-gold); font-weight: 900; }

.landing-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid var(--landing-border);
  border-radius: 12px;
  font-weight: 900;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}
.landing-button:hover { transform: translateY(-2px); }
.landing-button.is-primary { border-color: var(--landing-gold); color: #0f172a; background: var(--landing-gold); box-shadow: 0 10px 22px rgba(255, 194, 51, 0.19); }
.landing-button.is-primary:hover { background: var(--landing-gold-hover); }
.landing-button.is-ghost { background: var(--landing-surface); }

.landing-mobile-toggle { display: none; width: 44px; height: 44px; place-items: center; padding: 0; border: 1px solid var(--landing-border); border-radius: 12px; color: var(--landing-text); background: var(--landing-surface); font: inherit; font-size: 20px; cursor: pointer; }
.landing-mobile-menu { display: none; border-top: 1px solid var(--landing-border); background: var(--landing-surface); }
.landing-mobile-menu.is-open { display: block; }
.landing-mobile-menu-inner { display: grid; gap: 8px; padding: 14px 0 18px; }
.landing-mobile-menu a { padding: 11px 12px; border-radius: 10px; color: var(--landing-text-soft); font-weight: 800; }
.landing-mobile-menu a:hover { background: var(--landing-soft); color: var(--landing-gold); }
.landing-mobile-menu .landing-button { margin-top: 4px; }

.landing-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
  min-height: 680px;
  align-items: center;
  gap: 48px;
  padding: 64px 0 50px;
}
.landing-hero::before { position: absolute; z-index: -1; top: 60px; left: -110px; width: 190px; height: 190px; border: 30px solid rgba(255, 194, 51, 0.045); border-radius: 48px; content: ""; transform: rotate(22deg); }
.landing-eyebrow { display: inline-flex; padding: 7px 12px; border: 1px solid rgba(255, 194, 51, 0.32); border-radius: 999px; color: var(--landing-gold); background: var(--landing-gold-soft); font-size: 12px; font-weight: 900; letter-spacing: 0.08em; text-transform: uppercase; }
.landing-hero h1 { max-width: 680px; margin: 20px 0; font-size: clamp(48px, 6.4vw, 82px); line-height: 0.98; letter-spacing: -0.055em; }
.landing-hero h1 .accent { color: var(--landing-gold); }
.landing-hero-copy > p { max-width: 620px; color: var(--landing-text-soft); font-size: 18px; line-height: 1.68; }
.landing-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.landing-trust { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 36px; }
.landing-trust-item { display: grid; grid-template-columns: 38px 1fr; align-items: center; gap: 10px; padding: 11px; border: 1px solid transparent; border-radius: 14px; color: var(--landing-muted); font-size: 13px; line-height: 1.35; transition: 0.18s ease; }
.landing-trust-item:hover { border-color: var(--landing-border); background: rgba(255, 255, 255, 0.025); transform: translateY(-2px); }
.landing-trust-item strong { color: var(--landing-text); }
.landing-trust-icon { display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid rgba(255, 194, 51, 0.32); border-radius: 50%; color: var(--landing-gold); background: var(--landing-gold-soft); font-weight: 900; }

.landing-hero-art { position: relative; display: grid; min-height: 520px; place-items: center; }
.landing-hero-card { position: absolute; inset: 7% 2% 4% 4%; border: 1px solid rgba(255, 194, 51, 0.18); border-radius: 42px; background: linear-gradient(145deg, rgba(255, 194, 51, 0.08), transparent 52%), var(--landing-surface); box-shadow: var(--landing-shadow); transform: rotate(-2deg); }
.landing-hero-card::after { position: absolute; top: 22px; right: 24px; width: 70px; height: 12px; border-radius: 999px; background: linear-gradient(90deg, var(--landing-gold), rgba(255, 194, 51, 0.12)); content: ""; }
.landing-hero-mascot { position: relative; z-index: 2; width: min(100%, 500px); filter: drop-shadow(0 20px 26px rgba(0, 0, 0, 0.25)); animation: landing-float 4.5s ease-in-out infinite; }
.landing-speech { position: absolute; z-index: 3; padding: 14px 18px; border: 1px solid var(--landing-border); border-radius: 18px; background: var(--landing-surface-elevated); box-shadow: var(--landing-shadow-soft); font-weight: 900; }
.landing-speech.is-ja { top: 12%; left: 2%; color: var(--landing-gold); transform: rotate(-5deg); }
.landing-speech.is-local { top: 18%; right: -1%; transform: rotate(4deg); }
.landing-sticker { position: absolute; z-index: 4; right: 8%; bottom: 9%; display: grid; width: 76px; height: 76px; place-items: center; border: 3px solid var(--landing-bg); border-radius: 50%; color: #0f172a; background: var(--landing-gold); font-size: 24px; font-weight: 900; transform: rotate(9deg); box-shadow: var(--landing-shadow-soft); }
@keyframes landing-float { 50% { transform: translateY(-10px); } }

.landing-section { padding: 78px 0; }
.landing-section-heading { max-width: 760px; margin: 0 auto 36px; text-align: center; }
.landing-section-heading h2 { margin: 0 0 10px; font-size: clamp(32px, 4vw, 48px); letter-spacing: -0.04em; }
.landing-section-heading p { margin: 0; color: var(--landing-muted); font-size: 17px; line-height: 1.6; }
.landing-feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.landing-feature-card { min-height: 260px; padding: 28px 24px; border: 1px solid var(--landing-border); border-radius: 20px; background: var(--landing-surface); box-shadow: var(--landing-shadow-soft); text-align: center; transition: 0.2s ease; }
.landing-feature-card:nth-child(even) { transform: translateY(14px); }
.landing-feature-card:hover { border-color: rgba(255, 194, 51, 0.45); transform: translateY(-5px) rotate(-1deg); }
.landing-feature-symbol { display: grid; width: 68px; height: 68px; place-items: center; margin: 0 auto 18px; border: 1px solid rgba(255, 194, 51, 0.28); border-radius: 22px; color: var(--landing-gold); background: var(--landing-gold-soft); font-size: 30px; font-weight: 900; }
.landing-feature-card h3 { margin: 0 0 10px; }
.landing-feature-card p { margin: 0; color: var(--landing-muted); line-height: 1.58; }

.landing-languages { position: relative; padding: 48px; border: 1px solid var(--landing-border); border-radius: 28px; background: linear-gradient(135deg, var(--landing-surface), var(--landing-surface-elevated)); overflow: hidden; box-shadow: var(--landing-shadow-soft); }
.landing-language-layout { position: relative; z-index: 2; display: grid; grid-template-columns: 0.72fr 1.28fr 220px; align-items: center; gap: 26px; }
.landing-language-copy h2 { margin: 12px 0 10px; font-size: 38px; }
.landing-language-copy p { margin: 0; color: var(--landing-muted); line-height: 1.6; }
.landing-language-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.landing-language-card { padding: 24px; border: 1px solid var(--landing-border); border-radius: 18px; background: var(--landing-soft); transition: 0.18s ease; }
.landing-language-card:hover { border-color: rgba(255, 194, 51, 0.45); transform: translateY(-3px); }
.landing-language-card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.landing-flag { font-size: 42px; }
.landing-status { padding: 6px 10px; border-radius: 999px; font-size: 11px; font-weight: 900; }
.landing-status.is-live { color: #86efac; background: #173827; }
.landing-status.is-planned { color: var(--landing-gold); background: var(--landing-gold-soft); }
.landing-language-card h3 { margin: 0 0 6px; }
.landing-language-card p { margin: 0; color: var(--landing-muted); line-height: 1.5; }
.landing-language-mascot { align-self: end; width: 220px; }

.landing-pricing-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.landing-price-card { position: relative; display: flex; min-width: 0; flex-direction: column; gap: 20px; padding: 30px; border: 1px solid var(--landing-border); border-radius: 22px; background: var(--landing-surface); box-shadow: var(--landing-shadow-soft); }
.landing-price-card.is-highlight { border-color: #80691f; background: linear-gradient(145deg, var(--landing-warm), #211f19); }
.landing-price-card header h3 { margin: 0 0 6px; font-size: 24px; }
.landing-price-card header p { margin: 0; color: var(--landing-muted); }
.landing-price { display: flex; align-items: baseline; flex-wrap: wrap; gap: 7px; }
.landing-price strong { font-size: 42px; letter-spacing: -0.04em; }
.landing-price small { color: var(--landing-muted); }
.landing-price-list { display: grid; gap: 11px; padding: 0; margin: 0; list-style: none; }
.landing-price-list li { position: relative; padding-left: 24px; color: var(--landing-text-soft); }
.landing-price-list li::before { position: absolute; left: 0; color: var(--landing-gold); content: "✓"; font-weight: 900; }
.landing-price-card .landing-button { margin-top: auto; }
.landing-popular { position: absolute; top: 18px; right: 18px; padding: 6px 10px; border: 1px solid #e5b529; border-radius: 999px; color: var(--landing-gold); background: var(--landing-gold-soft); font-size: 10px; font-weight: 900; }
.landing-lifetime { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px; margin-top: 20px; padding: 28px 30px; border: 1px solid rgba(255, 194, 51, 0.35); border-radius: 22px; background: #0f172a; box-shadow: var(--landing-shadow-soft); }
.landing-lifetime-main { display: flex; align-items: center; gap: 28px; }
.landing-lifetime h3 { margin: 0 0 4px; }
.landing-lifetime p { margin: 0; color: var(--landing-muted); }
.landing-price-note { margin: 20px auto 0; color: var(--landing-muted); text-align: center; font-size: 13px; }

.landing-cta { padding-top: 26px; }
.landing-cta-box { display: grid; grid-template-columns: 1fr 260px; align-items: center; min-height: 220px; padding: 36px 46px; border: 1px solid rgba(255, 194, 51, 0.22); border-radius: 24px; background: #0f172a; overflow: hidden; box-shadow: var(--landing-shadow); }
.landing-cta-box h2 { margin: 0 0 10px; }
.landing-cta-box p { max-width: 620px; color: var(--landing-text-soft); line-height: 1.6; }
.landing-cta-box img { align-self: end; max-height: 220px; justify-self: end; }

.landing-footer { margin-top: 72px; border-top: 1px solid var(--landing-border); background: var(--landing-surface); }
.landing-footer-grid { display: grid; grid-template-columns: 1.2fr repeat(2, 0.7fr); gap: 36px; padding: 54px 0 36px; }
.landing-footer-brand img { width: 150px; margin-bottom: 14px; }
.landing-footer-brand p,
.landing-footer-column a { color: var(--landing-muted); }
.landing-footer-column { display: grid; align-content: start; gap: 10px; }
.landing-footer-column strong { margin-bottom: 6px; }
.landing-footer-column a:hover { color: var(--landing-gold); }
.landing-footer-bottom { padding: 18px 0 28px; border-top: 1px solid var(--landing-border); color: var(--landing-muted); text-align: center; font-size: 12px; }

@media (max-width: 980px) {
  .landing-links { display: none; }
  .landing-nav { grid-template-columns: 1fr auto; }
  .landing-actions > .landing-button { display: none; }
  .landing-mobile-toggle { display: grid; }
  .landing-hero { grid-template-columns: 1fr; text-align: center; }
  .landing-hero-copy > p { margin-inline: auto; }
  .landing-hero-actions { justify-content: center; }
  .landing-trust { max-width: 720px; margin-inline: auto; text-align: left; }
  .landing-feature-grid { grid-template-columns: repeat(2, 1fr); }
  .landing-language-layout { grid-template-columns: 1fr; }
  .landing-language-copy { text-align: center; }
  .landing-language-mascot { width: 190px; margin: 0 auto -48px; }
  .landing-pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .landing-price-card.is-highlight { grid-column: 1 / -1; }
  .landing-cta-box { grid-template-columns: 1fr 220px; }
}

@media (max-width: 680px) {
  .landing-container { width: min(100% - 24px, 620px); }
  .landing-header { position: sticky; }
  .landing-nav { min-height: 70px; gap: 8px; }
  .landing-brand img { width: 112px; height: 38px; }
  .landing-actions { gap: 7px; }
  .landing-language-button { min-width: 116px; padding-inline: 10px; }
  .landing-language-menu { width: 200px; }
  .landing-hero { min-height: auto; padding: 38px 0 20px; }
  .landing-hero h1 { font-size: clamp(42px, 13vw, 56px); }
  .landing-hero-copy > p { font-size: 16px; }
  .landing-hero-actions { display: grid; }
  .landing-trust { grid-template-columns: 1fr; }
  .landing-hero-art { min-height: 380px; margin-top: 6px; }
  .landing-speech { padding: 10px 12px; font-size: 13px; }
  .landing-speech.is-ja { left: 0; }
  .landing-speech.is-local { right: 0; }
  .landing-sticker { width: 62px; height: 62px; font-size: 20px; }
  .landing-section { padding: 56px 0; }
  .landing-feature-grid,
  .landing-language-cards,
  .landing-pricing-grid { grid-template-columns: 1fr; }
  .landing-feature-card:nth-child(even) { transform: none; }
  .landing-price-card.is-highlight { grid-column: auto; }
  .landing-languages { padding: 32px 20px; }
  .landing-language-copy h2 { font-size: 32px; }
  .landing-price-card { padding: 28px 22px; }
  .landing-lifetime { grid-template-columns: 1fr; text-align: center; }
  .landing-lifetime-main { flex-direction: column; gap: 10px; }
  .landing-lifetime .landing-button { width: 100%; }
  .landing-cta-box { grid-template-columns: 1fr; padding: 32px 24px 0; text-align: center; }
  .landing-cta-box img { max-height: 190px; margin: 0 auto; justify-self: center; }
  .landing-footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .landing-hero-mascot { animation: none; }
  .landing-button,
  .landing-feature-card,
  .landing-trust-item { transition: none; }
}