@charset "UTF-8";

:root {
  --color-bg: #f7f6f3;
  --color-surface: #ffffff;
  --color-muted: #efede8;
  --color-text: #242424;
  --color-subtext: #66635f;
  --color-border: #d9d5ce;
  --color-accent: #8a684d;
  --color-dark: #242321;
  --color-dark-text: #f5f2ed;
  --content-width: 760px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-bg);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans JP",
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    Meiryo,
    sans-serif;
  font-size: 1rem;
  line-height: 1.95;
  letter-spacing: 0.02em;
}

img {
  display: block;
}

a {
  color: inherit;
}

.site-header {
  background: rgba(247, 246, 243, 0.96);
}

.site-logo {
  color: var(--color-text);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.site-header .nav-link {
  color: var(--color-subtext);
  padding: 0.35rem 0.45rem;
  font-size: 0.92rem;
}

.site-header .nav-link:hover,
.site-header .nav-link.active {
  color: var(--color-text);
}

.hero-section {
  padding: clamp(4rem, 8vw, 8rem) 0;
  background: var(--color-surface);
}

.hero-title {
  margin: 0 0 2rem;
  font-size: clamp(2.2rem, 5vw, 4.8rem);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.03em;
}

.hero-lead {
  margin-bottom: 1.25rem;
  font-size: clamp(1.08rem, 2vw, 1.3rem);
  line-height: 1.8;
}

.hero-image,
.feature-image,
.curiosity-image,
.diy-card img {
  width: 100%;
  border-radius: 0;
  object-fit: cover;
}

.hero-image,
.curiosity-image {
  aspect-ratio: 1 / 1;
}

.content-section {
  padding: clamp(4.5rem, 9vw, 8rem) 0;
}

.section-muted {
  background: var(--color-muted);
}

.section-dark {
  color: var(--color-dark-text);
  background: var(--color-dark);
}

.reading-width {
  max-width: var(--content-width);
}

.section-heading {
  max-width: 820px;
  margin: 0 auto clamp(3.5rem, 7vw, 6rem);
  text-align: center;
}

.section-heading-light .section-intro {
  color: rgba(245, 242, 237, 0.72);
}

.section-kicker {
  margin-bottom: 1rem;
  color: var(--color-accent);
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-title {
  margin: 0 0 2rem;
  font-size: clamp(1.85rem, 4vw, 3.35rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.025em;
}

.section-intro {
  margin: 0;
  color: var(--color-subtext);
  font-size: 1.08rem;
}

.feature-row {
  padding: clamp(3.5rem, 7vw, 6.5rem) 0;
  border-top: 1px solid var(--color-border);
}

.feature-row:first-of-type {
  border-top: 0;
}

.feature-image {
  aspect-ratio: 16 / 9;
  background: #ebe9e4;
}

.feature-number {
  margin-bottom: 0.8rem;
  color: var(--color-accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.feature-row h3,
.diy-card h3 {
  margin-bottom: 1.25rem;
  font-size: clamp(1.45rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.45;
}

.feature-row p:last-child,
.diy-card p:last-child {
  margin-bottom: 0;
}

.diy-card {
  height: 100%;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.diy-card img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.diy-card-body {
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.curiosity-section {
  background: var(--color-surface);
}

.curiosity-section blockquote {
  margin: 2rem 0;
  padding-left: 1.5rem;
  border-left: 3px solid var(--color-accent);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.65;
}

.thank-you-section {
  background: var(--color-surface);
}

.closing-message {
  margin: 2.5rem auto;
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
  font-weight: 600;
  line-height: 2;
}

.site-footer {
  color: #bdb8b0;
  background: #1b1a19;
}

@media (max-width: 991.98px) {
  .hero-section {
    padding-top: 3rem;
  }

  .hero-image {
    max-width: 620px;
    margin: 0 auto;
  }

  .feature-row {
    padding: 4rem 0;
  }
}

@media (max-width: 575.98px) {
  body {
    line-height: 1.85;
  }

  .site-header .container-xl {
    align-items: flex-start !important;
    gap: 0.75rem;
  }

  .site-header .nav {
    gap: 0 !important;
  }

  .site-header .nav-link {
    font-size: 0.82rem;
  }

  .hero-title {
    margin-bottom: 1.5rem;
  }

  .content-section {
    padding: 4rem 0;
  }

  .section-heading {
    margin-bottom: 3rem;
    text-align: left;
  }

  .feature-row {
    padding: 3.25rem 0;
  }

  .diy-card-body {
    padding: 1.4rem;
  }
}

/* =========================================================
   Final overrides: multilingual header and review statistics
   ========================================================= */

.hero-title {
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.site-header {
  position: relative;
  z-index: 20;
  background: rgba(247, 246, 243, 0.97);
  border-bottom: 1px solid var(--color-border);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 92px;
  gap: 2rem;
}

.site-branding {
  min-width: 0;
}

.site-logo {
  display: inline-block;
  color: var(--color-text);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.035em;
  text-decoration: none;
}

.site-logo:hover,
.site-logo:focus-visible {
  color: var(--color-accent);
  text-decoration: none;
}

.site-tagline {
  margin: 0.35rem 0 0;
  color: var(--color-subtext);
  font-size: 0.78rem;
  line-height: 1.45;
}

.site-navigation {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.7rem;
}

.primary-nav ul,
.language-nav ul {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav ul {
  gap: 1.8rem;
}

.primary-nav li,
.language-nav li {
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav a {
  position: relative;
  display: block;
  padding: 0.25rem 0;
  color: var(--color-subtext);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
}

.primary-nav a:hover,
.primary-nav a:focus-visible,
.primary-nav a.active {
  color: var(--color-text);
  text-decoration: none;
}

.primary-nav a.active {
  font-weight: 800;
}

.primary-nav a.active::after {
  position: absolute;
  right: 0;
  bottom: -0.45rem;
  left: 0;
  height: 2px;
  background: var(--color-accent);
  content: "";
}

.language-nav ul {
  gap: 0.5rem 0.9rem;
}

.language-nav li {
  color: var(--color-subtext);
  font-size: 0.75rem;
  line-height: 1.4;
}

.language-nav li:not(:last-child)::after {
  margin-left: 0.9rem;
  color: var(--color-border);
  content: "/";
}

.language-nav a,
.language-nav .current {
  color: inherit;
  text-decoration: none;
}

.language-nav a:hover,
.language-nav a:focus-visible {
  color: var(--color-accent);
  text-decoration: none;
}

.language-nav .current {
  color: var(--color-text);
  font-weight: 700;
}

.stats-section {
  padding: clamp(1rem, 2.5vw, 2rem) 0 clamp(4.5rem, 8vw, 7rem);
  background: var(--color-surface);
}

.stat-card {
  height: 100%;
  padding: clamp(1.6rem, 3.5vw, 2.7rem);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  text-align: center;
}

.stat-value {
  margin: 0;
  color: var(--color-text);
  font-size: clamp(2.6rem, 5vw, 4.7rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.045em;
}

.stat-value-words {
  font-size: clamp(2rem, 3.7vw, 3.7rem);
}

.stat-label {
  margin: 1rem 0 0.8rem;
  color: var(--color-accent);
  font-size: 0.76rem;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.stat-description {
  max-width: 23rem;
  margin: 0 auto;
  color: var(--color-subtext);
  font-size: 0.9rem;
  line-height: 1.75;
}

.section-dark .row.g-4 {
  --bs-gutter-y: 3rem;
}

@media (max-width: 767.98px) {
  .site-header-inner {
    min-height: auto;
    padding-top: 1rem;
    padding-bottom: 1rem;
    align-items: flex-start;
  }

  .site-navigation {
    gap: 0.8rem;
  }

  .primary-nav ul {
    gap: 1rem;
  }

  .site-tagline {
    max-width: 13rem;
  }

  .language-nav ul {
    max-width: 19rem;
  }

  .stats-section {
    padding-top: 0;
  }
}

@media (max-width: 575.98px) {
  .site-header-inner {
    flex-direction: column;
    gap: 1rem;
  }

  .site-navigation {
    width: 100%;
    align-items: flex-start;
  }

  .primary-nav ul,
  .language-nav ul {
    justify-content: flex-start;
  }

  .primary-nav a.active::after {
    bottom: -0.25rem;
  }
}