/* ==========================================================================
   韓ジ landing — washi / 朱 identity
   Light: paper #F4EFE4 / ink #1A1613 / accent 朱 #B84A3C
   Dark:  paper #14110E / ink #F0E8D8 / accent #D8624F
   ========================================================================== */

:root {
  color-scheme: light dark;
  --paper: #F4EFE4;
  --ink: #1A1613;
  --ink-muted: #6B6257;
  --accent: #B04437; /* 朱 — darkened a step for AA (4.9:1 on paper) */
  --rule: rgba(26, 22, 19, 0.16);
  --rule-soft: rgba(26, 22, 19, 0.09);
  --card-paper: #EFE9DC;          /* baked-in bg of the webp screenshots */
  --card-ink: #1A1613;            /* ink on card-paper, both schemes */
  --card-border: rgba(26, 22, 19, 0.14);
  --card-shadow: none;
  --stamp-ink: #F7F2E8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14110E;
    --ink: #F0E8D8;
    --ink-muted: #A89D8C;
    --accent: #D8624F;
    --rule: rgba(240, 232, 216, 0.18);
    --rule-soft: rgba(240, 232, 216, 0.10);
    --card-border: rgba(240, 232, 216, 0.14);
    --card-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
  }
}

/* --- Base ---------------------------------------------------------------- */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.9;
  letter-spacing: 0.02em;
  overflow-x: hidden;
}

h1, h2 {
  font-family: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.05em;
  text-wrap: balance;
}

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

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

a:focus-visible,
.store-badge:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.wrap {
  max-width: 1040px;
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
}

.sp-only {
  display: none;
}

/* --- Header --------------------------------------------------------------- */

.site-header {
  padding-block: 20px;
  border-bottom: 1px solid var(--rule-soft);
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
}

.brand-name {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: "Shippori Mincho", serif;
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  line-height: 1;
}

.brand-tag {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
}

/* --- Hero ------------------------------------------------------------------ */

.hero {
  padding-block: clamp(56px, 9vw, 104px) clamp(56px, 8vw, 96px);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: clamp(36px, 6vw, 72px);
}

.hero h1 {
  font-size: clamp(2.5rem, 6.4vw, 4rem);
  line-height: 1.3;
}

.hero-sub {
  margin-top: 1.6em;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  color: var(--ink-muted);
}

.cta-block {
  margin-top: 2.4em;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-block;
  line-height: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .store-badge {
    transition: opacity 0.2s ease;
  }
  .store-badge:hover {
    opacity: 0.82;
  }
}

.coming-soon {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

.hero-visual {
  justify-self: center;
  max-width: 420px;
  position: relative;
}

.hero-visual img {
  border-radius: 18px;
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
}

/* 朱 seal accent tucked behind the hero card's corner */
.hero-visual::before {
  content: "";
  position: absolute;
  top: -12px;
  right: -12px;
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: 7px;
  z-index: -1;
}

/* --- Fact line -------------------------------------------------------------- */

.fact-line {
  border-block: 1px solid var(--rule);
  padding-block: clamp(32px, 5vw, 48px);
  text-align: center;
}

.fact-line p {
  font-family: "Shippori Mincho", serif;
  font-weight: 600;
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  letter-spacing: 0.06em;
  line-height: 1.8;
  text-wrap: balance;
}

.fact-line em {
  font-style: normal;
  color: var(--accent);
}

/* one sentence per line; each balances its own wrap on narrow screens */
.fact-l {
  display: block;
  text-wrap: balance;
}

/* --- Stamp motif (印) -------------------------------------------------------- */

.stamp-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.22em;
  color: var(--accent);
}

.stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  background: var(--accent);
  color: var(--stamp-ink);
  border-radius: 6px;
  font-family: "Shippori Mincho", serif;
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0;
  flex: none;
}

/* --- Features ----------------------------------------------------------------- */

.feature {
  padding-block: clamp(64px, 9vw, 112px);
}

.feature + .feature {
  border-top: 1px solid var(--rule-soft);
}

.feature-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: clamp(36px, 6vw, 80px);
}

/* alternate: image on the left for the middle feature */
.feature-alt .feature-copy {
  order: 2;
}

.feature-alt .feature-media {
  order: 1;
}

.feature h2 {
  margin-top: 1.1em;
  font-size: clamp(1.7rem, 3.6vw, 2.4rem);
}

.feature-copy p:not(.stamp-label) {
  margin-top: 1.4em;
  max-width: 34em;
}

/* Phone screenshots: tight bezel crops, cut at the bottom edge — float them
   on a paper card and fade the cut edge into the card's own background. */

.feature-media.phone {
  justify-self: center;
  width: min(320px, 100%);
  position: relative;
  background: var(--card-paper);
  border: 1px solid var(--card-border);
  border-radius: 22px;
  box-shadow: var(--card-shadow);
  overflow: hidden;
  padding: clamp(22px, 4vw, 30px) clamp(22px, 4vw, 30px) 0;
}

.feature-media.phone::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 84px;
  background: linear-gradient(to bottom, transparent, var(--card-paper) 88%);
  pointer-events: none;
}

/* --- 漢字の道 card --------------------------------------------------------------- */

.michi {
  padding-block: clamp(24px, 4vw, 48px) clamp(72px, 10vw, 120px);
}

.michi-card {
  position: relative;
  border: 1px solid var(--rule);
  border-radius: 22px;
  padding: clamp(36px, 6vw, 64px) clamp(24px, 6vw, 72px);
  text-align: center;
  background:
    linear-gradient(var(--rule-soft), var(--rule-soft)) top center / 1px 28px no-repeat;
}

.michi-card .stamp-label {
  justify-content: center;
}

.michi-card h2 {
  margin-top: 0.9em;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
}

.michi-pairs {
  margin-top: 1.6em;
  display: flex;
  justify-content: center;
  gap: clamp(24px, 6vw, 72px);
  flex-wrap: wrap;
}

.michi-pair {
  font-family: "Shippori Mincho", serif;
  font-weight: 600;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  letter-spacing: 0.05em;
  display: flex;
  align-items: baseline;
  gap: 0.4em;
  line-height: 1.5;
}

.michi-arrow {
  color: var(--accent);
  font-size: 0.75em;
}

.michi-pair strong {
  font-weight: 700;
  color: var(--accent);
  font-size: 1.25em;
}

.michi-kana {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
  font-size: 0.5em;
  letter-spacing: 0.14em;
  color: var(--ink-muted);
}

.michi-body {
  margin: 1.8em auto 0;
  max-width: 36em;
  text-align: left;
}

/* --- Fact strip -------------------------------------------------------------------- */

.facts {
  border-block: 1px solid var(--rule);
  padding-block: clamp(28px, 4vw, 40px);
}

.facts-list {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 14px clamp(24px, 4.5vw, 56px);
  flex-wrap: wrap;
  font-family: "Shippori Mincho", serif;
  font-weight: 600;
  font-size: clamp(1rem, 2vw, 1.2rem);
  letter-spacing: 0.06em;
}

.facts-list li {
  display: flex;
  align-items: baseline;
  white-space: nowrap;
}

/* small 印 square before each fact */
.facts-list li::before {
  content: "";
  width: 0.5em;
  height: 0.5em;
  background: var(--accent);
  border-radius: 2px;
  align-self: center;
  margin-right: 0.7em;
  flex: none;
}

.facts-note {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 400;
  font-size: 0.78em;
  color: var(--ink-muted);
}

/* --- Final CTA ----------------------------------------------------------------------- */

.final-cta {
  padding-block: clamp(72px, 11vw, 132px);
  text-align: center;
}

.final-cta h2 {
  font-size: clamp(1.8rem, 4.4vw, 2.8rem);
}

.final-sub {
  margin-top: 1.2em;
  color: var(--ink-muted);
}

.cta-center {
  flex-direction: column;
  gap: 16px;
  align-items: center;
  justify-content: center;
}

/* --- Footer ----------------------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--rule);
  padding-block: 32px 44px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.85rem;
}

.footer-links {
  list-style: none;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a,
.copyright a {
  color: var(--ink-muted);
  text-decoration: none;
}

.footer-links a:hover,
.copyright a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.copyright {
  color: var(--ink-muted);
}

/* --- Responsive --------------------------------------------------------------------------- */

@media (max-width: 760px) {
  .sp-only {
    display: inline;
  }

  .brand-tag {
    display: none;
  }

  .hero {
    padding-block: 48px 56px;
  }

  .hero-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    max-width: 340px;
  }

  .feature-alt .feature-copy {
    order: 1;
  }

  .feature-alt .feature-media {
    order: 2;
  }

  .feature-media.phone {
    width: min(280px, 86%);
  }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }
}