/* ============================================
   Hotel Mate — Marketing Site
   Warm Minimalism · ryokan calm · omotenashi
   Type: Marcellus + Shippori Mincho (display)
         Hanken Grotesk + Zen Kaku Gothic New (body)
   ============================================ */

/* --- Tokens --- */
:root {
  /* surfaces — warm paper, tinted toward the terracotta hue */
  --paper:       oklch(96.2% 0.009 84);
  --paper-deep:  oklch(93.8% 0.013 84);
  --card:        oklch(97.8% 0.007 84);
  --char:        oklch(22% 0.012 60);
  --char-raise:  oklch(26% 0.014 58);

  /* ink — kept dark; JP glyphs need more contrast than Latin */
  --ink:         oklch(23% 0.022 70);
  --ink-soft:    oklch(36% 0.026 62);
  --ink-mute:    oklch(45% 0.024 65);
  --ink-faint:   oklch(56% 0.02 68);

  /* accents */
  --accent:      oklch(56% 0.115 45);
  --accent-deep: oklch(48% 0.115 42);
  --accent-soft: oklch(56% 0.115 45 / 0.1);
  --sage:        oklch(55% 0.052 135);
  --gold:        oklch(72% 0.11 80);

  /* on dark */
  --cream:       oklch(94% 0.012 84);
  --cream-dim:   oklch(94% 0.012 84 / 0.78);

  /* lines */
  --line:        oklch(88% 0.014 80);
  --line-strong: oklch(82% 0.018 78);
  --line-dark:   oklch(34% 0.014 60);

  /* type */
  --font-display: 'Marcellus', 'Shippori Mincho', Georgia, serif;
  --font-body: 'Hanken Grotesk', 'Zen Kaku Gothic New', -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', ui-monospace, monospace;

  --fs-hero: clamp(2rem, 4.8vw, 3.6rem);
  --fs-h2: clamp(1.8rem, 3.1vw, 2.5rem);
  --fs-h3: clamp(1.4rem, 2vw, 1.7rem);

  /* space — 4pt scale */
  --sp-2xs: 4px;
  --sp-xs: 8px;
  --sp-sm: 12px;
  --sp-md: 16px;
  --sp-lg: 24px;
  --sp-xl: 32px;
  --sp-2xl: 48px;
  --sp-3xl: 64px;
  --sp-4xl: 96px;

  --radius: 4px;
  --max-width: 1120px;
  --shadow-sm: 0 1px 3px oklch(25% 0.02 70 / 0.05);
  --shadow-md: 0 10px 32px -8px oklch(25% 0.02 70 / 0.13);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* --- Reset --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink-soft);
  line-height: 1.8;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* JP body: medium weight — 400 reads thin at small sizes */
body.lang-ja {
  font-family: 'Zen Kaku Gothic New', 'Hanken Grotesk', sans-serif;
  font-weight: 500;
}

body.lang-ja .section-heading {
  font-size: clamp(1.55rem, 3vw, 2.5rem);
}

/* JP display glyphs: Shippori Mincho 600 for crisp strokes */
body.lang-ja .hero-headline,
body.lang-ja .section-heading,
body.lang-ja .product-title,
body.lang-ja .cta-banner-heading {
  font-weight: 600;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

::selection {
  background: var(--accent);
  color: var(--cream);
}

/* --- Utility --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.section {
  padding: clamp(80px, 11vw, 130px) 0;
  position: relative;
}

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

.section-label {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.85rem;
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-weight: 700;
  margin-bottom: var(--sp-lg);
}

.section-label::before {
  content: '';
  width: 36px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.section-heading {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 400;
  color: var(--ink);
  margin-bottom: var(--sp-md);
  line-height: 1.32;
  letter-spacing: 0.01em;
  max-width: 24ch;
}

.section-sub {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 58ch;
  line-height: 1.9;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 36px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.04em;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent);
  color: oklch(97% 0.01 84);
  cursor: pointer;
  transition: background 0.25s var(--ease-out), border-color 0.25s, transform 0.25s var(--ease-out), box-shadow 0.25s;
  text-align: center;
}

.btn::after {
  content: '→';
  font-family: var(--font-body);
  transition: transform 0.25s var(--ease-out);
}

.btn:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:hover::after {
  transform: translateX(4px);
}

/* ============================================
   NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: background 0.35s, padding 0.35s, box-shadow 0.35s;
}

.nav.scrolled {
  background: oklch(96.2% 0.009 84 / 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 13px 0;
  box-shadow: 0 1px 0 var(--line);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--ink);
  letter-spacing: 0.03em;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav-links a {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent-deep);
}

.lang-switch {
  font-size: 0.82rem;
  color: var(--ink-faint);
  border-left: 1px solid var(--line-strong);
  padding-left: 22px;
  margin-left: 4px;
}

.lang-switch a {
  color: var(--ink-faint);
  transition: color 0.2s;
}

.lang-switch a:hover,
.lang-switch a.active {
  color: var(--accent);
}

.lang-switch .sep {
  margin: 0 6px;
  color: var(--line-strong);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   HERO — asymmetric, vertical JP accent, seal
   ============================================ */
.hero {
  min-height: 94vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
  overflow: hidden;
  /* layered warm atmosphere */
  background:
    radial-gradient(ellipse 60% 55% at 86% 18%, oklch(56% 0.115 45 / 0.07), transparent 70%),
    radial-gradient(ellipse 55% 60% at 4% 92%, oklch(55% 0.052 135 / 0.06), transparent 72%),
    linear-gradient(178deg, oklch(97% 0.008 84), var(--paper) 55%, oklch(95.4% 0.011 84));
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--sp-2xl);
  width: 100%;
}

.hero-content {
  max-width: 780px;
}

/* JA display type sets wider — size down so each sentence holds one line */
body.lang-ja .hero-headline {
  font-size: clamp(1.7rem, 4.3vw, 3.2rem);
  letter-spacing: 0.02em;
}

.hero-tagline {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.8rem;
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-weight: 600;
  margin-bottom: var(--sp-lg);
}

/* hanko seal */
.hero-seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  background: var(--accent);
  color: oklch(97% 0.012 84);
  font-family: 'Shippori Mincho', serif;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  border-radius: 3px;
  transform: rotate(-3deg);
  box-shadow: 0 2px 8px oklch(56% 0.115 45 / 0.3);
}

.hero-headline {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: 400;
  color: var(--ink);
  line-height: 1.24;
  letter-spacing: 0.012em;
  margin-bottom: var(--sp-lg);
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--ink-soft);
  line-height: 1.95;
  margin-bottom: var(--sp-md);
  max-width: 52ch;
}

.hero-jp {
  font-size: 1rem;
  color: var(--ink-mute);
  margin-bottom: var(--sp-2xl);
  letter-spacing: 0.06em;
}

/* vertical 縦書き accent */
.hero-side {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
  padding-right: clamp(0px, 2vw, 32px);
}

.hero-vertical {
  writing-mode: vertical-rl;
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  font-weight: 600;
  letter-spacing: 0.42em;
  color: var(--ink);
  opacity: 0.42;
  line-height: 2;
}

.hero-side::after {
  content: '';
  width: 1px;
  height: clamp(180px, 30vh, 300px);
  background: linear-gradient(var(--accent), transparent);
  opacity: 0.45;
}

/* staggered load */
.hero-tagline, .hero-headline, .hero-sub, .hero-jp, .hero-content .btn, .hero-side {
  opacity: 0;
  transform: translateY(22px);
  animation: rise 0.9s var(--ease-out) forwards;
}

.hero-headline { animation-delay: 0.1s; }
.hero-sub { animation-delay: 0.22s; }
.hero-jp { animation-delay: 0.32s; }
.hero-content .btn { animation-delay: 0.42s; }
.hero-side { animation-delay: 0.55s; animation-duration: 1.2s; }

@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}

/* ============================================
   SCROLL REVEALS (js adds .in-view)
   ============================================ */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.85s var(--ease-out), transform 0.85s var(--ease-out);
  transition-delay: var(--reveal-delay, 0s);
}

.js .reveal.in-view {
  opacity: 1;
  transform: none;
}

/* ============================================
   SERVICE LINEUP — editorial index, big numerals
   ============================================ */
.service-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
  margin-top: var(--sp-3xl);
}

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-xl) var(--sp-xl) var(--sp-lg);
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s var(--ease-out);
}

.service-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.service-card-number {
  font-family: var(--font-display);
  font-size: 4.6rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.16;
  margin-bottom: calc(-1 * var(--sp-lg));
  transition: opacity 0.3s;
  user-select: none;
}

.service-card:hover .service-card-number {
  opacity: 0.32;
}

.service-card-title {
  font-family: var(--font-body);
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--sp-2xs);
  line-height: 1.4;
  position: relative;
}

.service-card-tagline {
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--accent-deep);
  letter-spacing: 0.04em;
  margin-bottom: var(--sp-sm);
}

.service-card-text {
  font-size: 1rem;
  color: var(--ink-soft);
  line-height: 1.8;
  margin-bottom: var(--sp-lg);
}

.service-card-link {
  margin-top: auto;
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--accent-deep);
  transition: color 0.2s, letter-spacing 0.3s var(--ease-out);
}

.service-card:hover .service-card-link {
  color: var(--accent-deep);
  letter-spacing: 0.06em;
}

.narrow {
  max-width: 720px;
}

/* ============================================
   PRICING (TRUE AI page)
   ============================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: var(--sp-lg);
  margin-top: var(--sp-3xl);
}

.price-figure {
  font-family: var(--font-display);
  font-size: 1.9rem;
  color: var(--accent-deep);
  line-height: 1.2;
  margin-bottom: var(--sp-sm);
}

.price-figure small {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-mute);
}

.price-disclaimer {
  margin-top: var(--sp-lg);
  font-size: 0.9rem;
  color: var(--ink-mute);
}

.badge {
  align-self: flex-start;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--sage);
  border: 1px solid oklch(55% 0.052 135 / 0.5);
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: var(--sp-sm);
}

/* ============================================
   PRODUCT DETAIL
   ============================================ */
.product {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(var(--sp-xl), 6vw, 80px);
  align-items: center;
}

.product.reverse .product-info {
  order: 2;
}

.product.reverse .product-terminal {
  order: 1;
}

.product-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.83rem;
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.26em;
  font-weight: 700;
  margin-bottom: var(--sp-md);
}

.product-label::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.product-title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 400;
  color: var(--ink);
  margin-bottom: var(--sp-sm);
  line-height: 1.35;
}

.product-lead {
  font-size: 1.14rem;
  font-weight: 700;
  color: var(--accent-deep);
  margin-bottom: var(--sp-sm);
  line-height: 1.65;
}

.product-text {
  font-size: 1.05rem;
  color: var(--ink-soft);
  line-height: 1.9;
  max-width: 58ch;
}

/* feature checklist */
.features-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px 22px;
  margin-top: var(--sp-lg);
  padding-top: var(--sp-lg);
  border-top: 1px solid var(--line);
}

.feature-item {
  position: relative;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.6;
  padding: 5px 0 5px 20px;
}

.feature-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: calc(4px + 0.55em);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sage);
}

.feature-item small {
  color: var(--ink-mute);
  font-weight: 400;
  font-size: 0.85rem;
}

/* ============================================
   TERMINAL — warm charcoal work log
   ============================================ */
.terminal {
  background: linear-gradient(165deg, var(--char-raise), var(--char) 60%);
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line-dark);
}

.terminal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid oklch(60% 0.02 70 / 0.55);
}

.terminal-dot:nth-child(1) { background: oklch(56% 0.115 45 / 0.65); border-color: transparent; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: oklch(62% 0.018 72);
  margin-left: 10px;
}

.terminal-body {
  padding: var(--sp-md) 18px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 2.1;
  overflow-x: auto;
  color: var(--cream-dim);
}

/* hanging indent: wrapped log lines align after the timestamp */
.terminal-body > div {
  padding-left: 4.8em;
  text-indent: -4.8em;
}

/* lines type in on scroll */
.js .terminal-body > div {
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.js .terminal.in-view .terminal-body > div {
  opacity: 1;
  transform: none;
}

.terminal-body .t-time { color: oklch(60% 0.02 66); }
.terminal-body .t-action { color: var(--cream-dim); }
.terminal-body .t-success { color: oklch(80% 0.08 135); }
.terminal-body .t-warn { color: oklch(78% 0.11 82); }
.terminal-body .t-error { color: oklch(74% 0.11 40); }
.terminal-body .t-arrow { color: oklch(60% 0.02 66); }

/* ============================================
   CTA BANNER — charcoal with warm center glow
   ============================================ */
.cta-banner {
  background:
    radial-gradient(ellipse 55% 90% at 50% 110%, oklch(56% 0.115 45 / 0.16), transparent 70%),
    var(--char);
  padding: clamp(70px, 9vw, 110px) 0;
  text-align: center;
}

.cta-banner-heading {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 400;
  color: var(--cream);
  margin-bottom: var(--sp-sm);
  line-height: 1.45;
  letter-spacing: 0.015em;
}

.cta-banner-sub {
  font-size: 1.08rem;
  color: var(--cream-dim);
  margin-bottom: var(--sp-xl);
  line-height: 1.85;
}

/* ============================================
   HOW IT WORKS — 4 steps
   ============================================ */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-lg);
  margin-top: var(--sp-3xl);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 9%;
  right: 9%;
  height: 0;
  border-top: 1px dashed var(--line-strong);
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: var(--accent);
  margin-bottom: var(--sp-lg);
  position: relative;
  z-index: 1;
}

.section-alt .step-number {
  background: var(--paper-deep);
}

.step-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--sp-xs);
}

.step-text {
  font-size: 0.95rem;
  color: var(--ink-soft);
  line-height: 1.75;
  max-width: 26ch;
  margin: 0 auto;
}

/* ============================================
   WHY — borderless columns with hairlines
   ============================================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: var(--sp-3xl);
  border-top: 1px solid var(--line-strong);
}

.card {
  padding: var(--sp-xl) var(--sp-xl) 0 0;
}

.card + .card {
  padding-left: var(--sp-xl);
  border-left: 1px solid var(--line-strong);
}

.card-icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--sp-lg);
  color: var(--accent);
  opacity: 0.85;
}

.card-title {
  font-size: 1.16rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--sp-sm);
  line-height: 1.4;
}

.card-text {
  font-size: 1rem;
  color: var(--ink-soft);
  line-height: 1.85;
}

/* ============================================
   RESULTS
   ============================================ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-bottom: var(--sp-3xl);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.stat {
  text-align: center;
  padding: var(--sp-xl) var(--sp-lg);
}

.stat + .stat {
  border-left: 1px solid var(--line-strong);
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.4vw, 2.9rem);
  color: var(--accent-deep);
  line-height: 1.15;
  margin-bottom: var(--sp-2xs);
}

.stat-desc {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.case-studies {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
}

.case-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-xl) var(--sp-lg);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s var(--ease-out);
}

.case-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.case-card-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: var(--sp-2xs);
}

.case-card-oneliner {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent-deep);
  margin-bottom: var(--sp-sm);
  line-height: 1.65;
}

.case-card-text {
  font-size: 0.96rem;
  color: var(--ink-soft);
  line-height: 1.8;
  margin-bottom: var(--sp-sm);
}

.case-card-relevance {
  font-size: 0.88rem;
  color: var(--ink-mute);
  padding-top: var(--sp-sm);
  border-top: 1px solid var(--line);
  line-height: 1.75;
}

.case-card-relevance strong {
  color: var(--ink-soft);
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  text-align: center;
}

.contact .section-label {
  justify-content: center;
}

.contact .section-label::after {
  content: '';
  width: 36px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.contact .section-heading {
  margin: 0 auto var(--sp-lg);
  max-width: none;
}

.contact .section-sub {
  margin: 0 auto;
}

.contact-email {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  color: var(--accent-deep);
  display: inline-block;
  margin-bottom: var(--sp-sm);
  border-bottom: 1px solid oklch(56% 0.115 45 / 0.35);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.contact-email:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.contact-location {
  font-size: 0.98rem;
  color: var(--ink-mute);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--sp-xl) 0;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 0.9rem;
  color: var(--ink-mute);
}

.footer a {
  color: var(--ink-mute);
  transition: color 0.2s;
}

.footer a:hover {
  color: var(--accent);
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-tagline, .hero-headline, .hero-sub, .hero-jp,
  .hero-content .btn, .hero-side {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .js .reveal,
  .js .terminal-body > div {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .hero-side {
    display: none;
  }

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

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    background: oklch(96.2% 0.009 84 / 0.98);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    padding: 40px;
    transform: translateX(100%);
    transition: transform 0.35s var(--ease-out);
    box-shadow: -8px 0 32px oklch(25% 0.02 70 / 0.1);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.05rem;
  }

  .lang-switch {
    border-left: none;
    padding-left: 0;
    margin-left: 0;
    padding-top: 14px;
    border-top: 1px solid var(--line);
  }

  .nav-hamburger {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding-bottom: 72px;
  }

  .service-cards {
    grid-template-columns: 1fr;
  }

  .features-list {
    grid-template-columns: 1fr;
  }

  .product {
    grid-template-columns: 1fr;
    gap: var(--sp-xl);
  }

  .product.reverse .product-info {
    order: 1;
  }

  .product.reverse .product-terminal {
    order: 2;
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-xl) var(--sp-lg);
  }

  .steps::before {
    display: none;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    border-top: none;
  }

  .card {
    padding: var(--sp-lg) 0;
    border-top: 1px solid var(--line-strong);
  }

  .card + .card {
    padding-left: 0;
    border-left: none;
  }

  .stats-bar {
    grid-template-columns: 1fr;
  }

  .stat + .stat {
    border-left: none;
    border-top: 1px solid var(--line-strong);
  }

  .case-studies {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .steps {
    grid-template-columns: 1fr;
  }

  .step-text {
    max-width: 34ch;
  }
}