/* yonakana.com — 会社紹介1ページ（v2・作り込み版 / Issue #43）
   配色: base #F6F4EF(オフホワイト) / section-alt #EDE9E1 / surface #FBFAF7
        / text #33383A(チャコール) / muted #6B716C / accent #1F5C4E / accent-dark #163F35
        / border #DCD5C9（暖色寄りのニュートラル）
   書体: 和文見出し・本文=Noto Sans JP（400/500/700） / 欧文見出し・数字(価格・ブランドロゴ・進め方番号)=Fraunces
   レイアウト方針: 375px〜のモバイル基準で単一カラム→768px以上で価格・理由・進め方・ヒーローを
        2カラム以上に広げる。左揃えを基本にし、中央揃えは使わない。角丸は小さめ(2〜4px)で統一。 */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

:root {
  --color-base: #F6F4EF;
  --color-section: #EDE9E1;
  --color-surface: #FBFAF7;
  --color-accent: #1F5C4E;
  --color-accent-dark: #163F35;
  --color-accent-soft: rgba(31, 92, 78, 0.08);
  --color-text: #33383A;
  --color-muted: #6B716C;
  --color-border: #DCD5C9;

  --font-body: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  --font-accent: "Fraunces", "Noto Sans JP", serif;

  --radius: 3px;
  --max-width: 1080px;
  --max-width-narrow: 760px;
  --header-h: 4.25rem;
  --space-section: clamp(4.5rem, 11vw, 9.5rem);
  --space-block: clamp(1.75rem, 3.4vw, 2.75rem);
  --shadow-soft: 0 1px 2px rgba(30, 40, 36, 0.05), 0 10px 28px rgba(30, 40, 36, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  padding-top: var(--header-h);
  background: var(--color-base);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.055em;
  font-feature-settings: 'palt' 1;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

h1, h2, h3 {
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.45;
  text-wrap: balance;
  color: var(--color-text);
}

h1 {
  font-size: clamp(1.875rem, 5.2vw, 3.125rem);
  margin: 0 0 1.25rem;
}

h2 {
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  margin: 0 0 1rem;
}

h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 0 0 0.6rem;
}

p {
  margin: 0 0 1rem;
  max-width: 38em;
}

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

ul, ol {
  margin: 0;
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.6rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: var(--color-surface);
  padding: 0.75rem 1rem;
  z-index: 200;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  left: 0;
  top: var(--header-h);
}

/* header */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(246, 244, 239, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
}

.brand-en {
  font-family: var(--font-accent);
  font-weight: 600;
  font-size: 1.1875rem;
  letter-spacing: 0.01em;
  color: var(--color-accent);
}

.brand-ja {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

.header-nav {
  flex: none;
}

/* sections */

.section {
  padding: var(--space-section) 0;
  scroll-margin-top: var(--header-h);
}

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

.lead {
  font-size: 1.0625rem;
  color: var(--color-muted);
  margin-bottom: var(--space-block);
}

/* reveal-on-scroll (progressive enhancement; content is fully visible without JS) */

html.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

html.js .reveal.is-inview {
  opacity: 1;
  transform: none;
}

/* hero */

.hero {
  padding-top: clamp(3.5rem, 9vw, 6rem);
  padding-bottom: clamp(3.5rem, 9vw, 6rem);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 55% at 82% 18%, var(--color-accent-soft), transparent 70%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 6vw, 3.5rem);
  align-items: center;
}

.hero-content {
  min-width: 0;
}

.hero h1 {
  max-width: 16em;
}

.hero .lead {
  max-width: 32em;
}

.hero-visual {
  max-width: 300px;
  margin: 0;
  color-scheme: light;
}

.hero-visual svg {
  display: block;
  width: 100%;
  height: auto;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.03em;
  padding: 0.95rem 1.6rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-surface);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-secondary:hover {
  background: var(--color-accent);
  color: var(--color-surface);
}

.btn-sm {
  padding: 0.6rem 1.1rem;
  font-size: 0.875rem;
}

/* pricing */

.price-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: var(--space-block);
}

.price-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem 1.75rem 1.5rem;
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.price-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 1px 2px rgba(30, 40, 36, 0.06), 0 16px 32px rgba(30, 40, 36, 0.09);
}

.price-label {
  position: relative;
  font-size: 0.8125rem;
  color: var(--color-muted);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin: 0 0 0.9rem;
  padding-left: 0.9rem;
}

.price-label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--color-accent);
  border-radius: 1px;
}

.price-value {
  font-family: var(--font-accent);
  font-size: clamp(2.5rem, 7vw, 3.5rem);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent-dark);
  letter-spacing: 0;
  margin: 0;
  line-height: 1.1;
}

.price-unit {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-left: 0.25rem;
  color: var(--color-muted);
}

.price-note {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin: 0.75rem 0 0;
}

.includes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-block);
  margin-bottom: var(--space-block);
}

.includes-block ul {
  color: var(--color-text);
}

.note-block {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-block);
}

.note-block p {
  color: var(--color-muted);
}

/* reasons */

.reasons-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-block);
}

.reason {
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

.reason p {
  color: var(--color-muted);
  margin: 0;
}

/* process */

.process-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-block);
  counter-reset: none;
}

.process-list li {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  margin-bottom: 0;
}

.process-num {
  flex: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-accent);
  color: var(--color-accent-dark);
  background: var(--color-surface);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-accent);
  font-weight: 600;
  font-size: 1.125rem;
  font-variant-numeric: tabular-nums;
}

.process-list p {
  color: var(--color-muted);
  margin: 0;
}

/* faq */

.faq-list {
  margin: 0;
}

.faq-item {
  border-top: 1px solid var(--color-border);
  padding: 1.75rem 0;
}

.faq-item:last-child {
  border-bottom: 1px solid var(--color-border);
}

.faq-item dt {
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 0.6rem;
}

.faq-item dd {
  margin: 0;
  color: var(--color-muted);
}

/* about */

.about-list {
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-surface);
}

.about-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--color-border);
}

.about-row:first-child {
  border-top: none;
}

.about-row:nth-child(even) {
  background: var(--color-section);
}

.about-row dt {
  font-weight: 700;
  color: var(--color-muted);
}

.about-row dd {
  margin: 0;
}

/* contact */

.contact {
  background: var(--color-section);
  border-top: 1px solid var(--color-border);
}

.contact .mail-address {
  font-family: var(--font-accent);
  color: var(--color-muted);
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
}

/* footer */

.site-footer {
  position: relative;
  background: var(--color-accent-dark);
  color: #EEF1EA;
  padding: var(--space-section) 0 2.5rem;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.75rem;
  margin: 0 0 var(--space-block);
}

.footer-nav a {
  color: #EEF1EA;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
}

.footer-nav a:hover {
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.footer-works {
  color: #C3D0C7;
  font-size: 0.875rem;
  max-width: 34em;
}

.footer-legal {
  color: #A5B6AB;
  font-size: 0.8125rem;
}

.footer-copyright {
  color: #C3D0C7;
  font-size: 0.8125rem;
  margin-top: 1.75rem;
  margin-bottom: 0;
}

/* narrow header safety: keep CTA visible, trim the subtitle first */

@media (max-width: 380px) {
  .brand-ja {
    display: none;
  }
}

/* desktop breakpoint */

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .hero-visual {
    max-width: none;
  }

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

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

  .reasons-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .reason {
    padding-top: 1.5rem;
  }

  .process-list {
    grid-template-columns: repeat(2, 1fr);
  }
}