:root {
  --ink: #1a202c;
  --muted: #4a5568;
  --blue: #2b6cb0;
  --blue-d: #215387;
  --bg: #f7fafc;
  --card: #ffffff;
  --line: #e2e8f0;
  --soft: #edf2f7;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
}

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

a { color: var(--blue-d); }

h1, h2, h3 {
  font-family: "Roboto Slab", serif;
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: 0;
}

h1 { font-size: clamp(1.75rem, 7vw, 3.5rem); margin: 0.15rem 0 0.6rem; }

h2 { font-size: clamp(1.4rem, 4vw, 2.3rem); margin: 0 0 0.7rem; }

h3 { font-size: 1.55rem; margin: 0 0 0.4rem; }

p { margin: 0 0 0.9rem; }

.skip {
  position: absolute;
  left: 0.6rem;
  top: -4rem;
  background: var(--ink);
  color: #fff;
  padding: 0.5rem 0.8rem;
  z-index: 20;
}

.skip:focus { top: 0.6rem; }

.wrap {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 250, 252, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-bar {
  width: min(1120px, calc(100% - 1.5rem));
  margin: 0 auto;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand img {
  display: block;
  height: 52px;
  width: auto;
  max-width: 72vw;
  object-fit: contain;
  background: transparent;
  -webkit-user-drag: none;
}

.menu-btn { display: none; }

.nav-desk { display: none; }

.menu-btn, .btn, .dock-btn {
  font: inherit;
  cursor: pointer;
}

.menu-btn {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  min-height: 44px;
  padding: 0 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 650;
  border: 1px solid transparent;
}

.btn-blue { background: var(--blue); color: #fff; }

.btn-blue:hover { background: var(--blue-d); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.hero, .page-hero { padding: 1rem 0 0.2rem; }

.hero-grid, .page-hero-grid, .split {
  display: grid;
  gap: 1.2rem;
}

.eyebrow {
  margin: 0;
  color: var(--blue);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.lead { font-size: 1rem; color: var(--muted); }

.hero-actions { display: grid; gap: 0.55rem; margin-top: 0.9rem; }
.hero-actions .btn { width: 100%; }

.hero-media {
  border-radius: 22px;
  overflow: hidden;
  background: var(--soft);
  margin: 0;
}

.hero-media img, .model-photo img, .tile img, .guide-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-media { aspect-ratio: 16 / 10; }

.band { padding: 1.4rem 0; }

.benefits {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.7rem;
}

.benefits li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.9rem 1rem;
}

.section { padding: 1.2rem 0 2rem; }

.section-lead { color: var(--muted); max-width: 42rem; }

.tiles, .guide-grid, .models {
  display: grid;
  gap: 0.9rem;
}

.tile, .guide-card {
  display: grid;
  gap: 0.25rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}

.tile img { aspect-ratio: 3 / 2; }

.tile strong, .tile span, .tile-kicker { padding: 0 0.9rem; }

.tile span:last-child { padding-bottom: 0.95rem; color: var(--muted); }

.tile-kicker {
  padding-top: 0.8rem;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.model {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
}

.model-photo { margin: 0; aspect-ratio: 3 / 2; background: var(--soft); }

.model div { padding: 1rem; }

.specs { margin: 0 0 1rem; padding-left: 1.1rem; color: var(--muted); }

.prose { max-width: 44rem; }

.story { padding: 1.8rem 0 3rem; }

.story-media { margin: 0.4rem 0 1.2rem; }

.points { padding-left: 1.2rem; }

.faqs { display: grid; gap: 0.55rem; }

.faq {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.75rem 0.95rem;
}

.faq summary { cursor: pointer; font-weight: 650; }

.guide-card img { aspect-ratio: 3 / 2; }

.guide-card strong, .guide-card span { padding: 0 0.9rem; }

.guide-card strong { padding-top: 0.85rem; }

.guide-card span { color: var(--blue); font-weight: 650; padding-bottom: 0.95rem; }

.split { align-items: center; padding-bottom: 1rem; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 1.25rem;
  background: #fff;
}

.footer-grid, .footer-col { display: grid; gap: 0.4rem; }

.footer-col a { color: var(--muted); text-decoration: none; }

.footer-brand p { color: var(--muted); }

.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  background: #fff;
  border-top: 1px solid var(--line);
  box-shadow: 0 -8px 24px rgba(26, 32, 44, 0.06);
  z-index: 40;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.dock-btn {
  min-height: 56px;
  width: 100%;
  border: 0;
  background: transparent;
  text-decoration: none;
  color: var(--ink);
  font-weight: 650;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.dock-btn.is-active { color: var(--blue); }

.sheet[hidden] { display: none; }

.sheet { position: fixed; inset: 0; z-index: 30; }

.sheet-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(26, 32, 44, 0.45);
}

.sheet-panel {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  border-radius: 20px 20px 0 0;
  padding: 1rem 1rem 1.4rem;
  display: grid;
  gap: 0.35rem;
  max-height: 80vh;
  overflow: auto;
}

.sheet-panel a {
  text-decoration: none;
  color: var(--ink);
  min-height: 44px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.sheet-head { display: flex; justify-content: space-between; align-items: center; }

.form { display: grid; gap: 0.8rem; max-width: 36rem; }

.form label { display: grid; gap: 0.3rem; font-weight: 600; }

.form input, .form textarea {
  font: inherit;
  font-size: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 0.8rem;
  background: #fff;
  -webkit-appearance: none;
  appearance: none;
}

.hp { position: absolute; left: -9999px; }

.notice {
  background: #e6fffa;
  border: 1px solid #b2f5ea;
  border-radius: 12px;
  padding: 0.8rem 1rem;
}

.notice-bad {
  background: #fff5f5;
  border-color: #fed7d7;
}

body.sheet-open { overflow: hidden; }


@media (min-width: 800px) {
  .lead { font-size: 1.12rem; }
  .hero, .page-hero { padding: 1.8rem 0 0.6rem; }
  .hero-media { aspect-ratio: 4 / 3; }
  .hero-actions { display: flex; flex-wrap: wrap; }
  .hero-actions .btn { width: auto; }
  .brand img { height: 64px; width: auto; max-width: 240px; }
  .header-bar { min-height: 96px; }
  .tiles { grid-template-columns: 1fr 1fr 1fr; }
  .guide-grid { grid-template-columns: 1fr 1fr; }
  .benefits { grid-template-columns: 1fr 1fr; }
  .hero-grid, .page-hero-grid, .split { grid-template-columns: 1.05fr 0.95fr; align-items: center; }
  .models { grid-template-columns: 1fr 1fr; }
  .model.is-wide { grid-column: 1 / -1; grid-template-columns: 0.9fr 1.1fr; display: grid; }
  .model.is-wide .model-photo { aspect-ratio: auto; min-height: 100%; }
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 1.4rem; }
}

@media (min-width: 980px) {
  .guide-grid { grid-template-columns: 1fr 1fr 1fr; }
  .nav-desk { display: flex; align-items: center; gap: 0.85rem; }
  .nav-link { color: var(--ink); text-decoration: none; font-weight: 600; }
  .nav-link.is-active { color: var(--blue); }
  .menu-btn, .dock { display: none; }
  body { padding-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}