:root {
  --bg: #FFFFFF;
  --bg-soft: #FFF8F4;
  --card: #FFFFFF;
  --border: #F0E4DC;
  --text-1: #241E1A;
  --text-2: #6B6058;
  --text-3: #9C9086;
  --accent: #FF6B4A;
  --accent-hover: #E8532F;
  --accent-soft: #FFE9E1;
  --blue: #5B8DEF;
  --blue-soft: #E8F0FE;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text-1);
}

.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 40px; max-width: 1400px; margin: 0 auto;
}
.nav-brand { font-weight: 800; font-size: 1.1rem; display: inline-flex; align-items: center; gap: 9px; }
.beta-tag {
  font-size: .62rem; font-weight: 800; text-transform: uppercase; letter-spacing: .03em;
  color: var(--accent-hover); background: var(--accent-soft); padding: 3px 8px; border-radius: 999px;
}
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-link { color: var(--text-2); text-decoration: none; font-size: .88rem; font-weight: 600; }
.nav-link:hover { color: var(--text-1); }
button.nav-link { border: none; background: none; cursor: pointer; font-family: inherit; padding: 0; }
.nav-contact-btn {
  display: inline-flex; align-items: center; gap: 7px;
  color: var(--accent-hover); text-decoration: none; font-size: .86rem; font-weight: 700;
  border: 1.5px solid var(--accent); border-radius: 999px; padding: 8px 16px;
}
.nav-contact-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.nav-contact-btn:hover { background: var(--accent-soft); }

.hero {
  max-width: 1400px; margin: 20px auto 40px; padding: 0 40px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.hero-text h1 { font-size: 2.5rem; line-height: 1.18; margin: 0 0 18px; letter-spacing: -.01em; }
.hero-sub { color: var(--text-2); font-size: 1.05rem; line-height: 1.65; margin: 0 0 28px; max-width: 480px; }
.hero-disclaimer { color: var(--text-3); font-size: .76rem; line-height: 1.5; max-width: 420px; margin: 12px 0 0; }
.hero-visual svg { width: 100%; height: auto; }
.hero-visual img:not(.stack-card) { width: 100%; height: auto; display: block; border-radius: 20px; box-shadow: 0 20px 50px rgba(20,20,40,.14); }

.photo-stack {
  position: relative; width: 100%; aspect-ratio: 1 / 0.85;
  padding: 30px; box-sizing: border-box; margin-bottom: 10px;
}
.stack-card {
  position: absolute; width: 30%; height: 42%; object-fit: cover;
  border-radius: 14px; border: 4px solid #fff; box-shadow: 0 14px 30px rgba(20,20,40,.18);
  transform: rotate(var(--r, 0deg)); transition: transform .25s ease, z-index .25s;
}
.stack-card:hover { transform: rotate(var(--r, 0deg)) scale(1.08); z-index: 20; }
.sc-1 { --r: -6deg; top: 2%;  left: 2%;  z-index: 1; }
.sc-2 { --r: 3deg;  top: 6%;  left: 35%; z-index: 2; }
.sc-3 { --r: -3deg; top: 2%;  left: 68%; z-index: 3; }
.sc-4 { --r: 4deg;  top: 54%; left: 2%;  z-index: 4; }
.sc-5 { --r: -2deg; top: 58%; left: 35%; z-index: 5; }
.sc-6 { --r: 5deg;  top: 54%; left: 68%; z-index: 6; }

.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--accent); color: #fff; text-decoration: none;
  font-weight: 700; font-size: .95rem; padding: 13px 26px; border-radius: 12px;
  border: none; cursor: pointer;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  background: transparent; color: var(--text-3); border: 1px solid var(--border);
  font-weight: 700; font-size: .9rem; padding: 12px 24px; border-radius: 12px; cursor: not-allowed;
}
.link-secondary { display: block; margin-top: 10px; color: var(--text-2); font-size: .82rem; text-decoration: underline; }

.features {
  max-width: 1400px; margin: 70px auto; padding: 0 40px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px;
}
.feature {
  position: relative; overflow: hidden;
  background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 26px 24px;
  box-shadow: 0 2px 10px rgba(36,30,26,.04);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.feature::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--tile-accent, var(--accent)); transform: scaleX(0); transform-origin: left;
  transition: transform .3s ease;
}
.feature:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 36px rgba(36,30,26,.11);
  border-color: transparent;
}
.feature:hover::before { transform: scaleX(1); }
.feature--blue   { --tile-accent: #3B6FE0; }
.feature--orange { --tile-accent: #E8532F; }
.feature--green  { --tile-accent: #1E9E6B; }
.feature--purple { --tile-accent: #7C3AED; }
.feature--teal   { --tile-accent: #1E9E6B; }

.feature-icon {
  width: 50px; height: 50px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; margin-bottom: 16px;
  transition: transform .3s ease;
}
.feature:hover .feature-icon { transform: scale(1.08) rotate(-4deg); }
.feature-icon svg { width: 23px; height: 23px; }
.icon-blue   { background: linear-gradient(150deg, var(--blue-soft) 0%, #D7E4FD 100%); box-shadow: inset 0 1px 0 rgba(255,255,255,.7); }
.icon-orange { background: linear-gradient(150deg, var(--accent-soft) 0%, #FFD9C7 100%); box-shadow: inset 0 1px 0 rgba(255,255,255,.7); }
.icon-green  { background: linear-gradient(150deg, #E7F6EC 0%, #CFEEDA 100%); box-shadow: inset 0 1px 0 rgba(255,255,255,.7); }
.icon-purple { background: linear-gradient(150deg, #F0EAFB 0%, #E0D0F7 100%); box-shadow: inset 0 1px 0 rgba(255,255,255,.7); }
.feature h3 { margin: 0 0 8px; font-size: 1.05rem; font-weight: 800; color: var(--text-1); letter-spacing: -.01em; }
.feature p { margin: 0; color: var(--text-2); font-size: .87rem; line-height: 1.6; }

.ai-modes { max-width: 1100px; margin: 60px auto; padding: 0 40px; text-align: center; }
.ai-modes h2 { font-size: 1.7rem; margin: 0 0 8px; }
.ai-modes-intro { color: var(--text-2); margin: 0 0 24px; font-size: .92rem; }
.ai-modes-note { color: var(--text-2); margin: 22px 0 0; font-size: .85rem; font-weight: 600; }
.mode-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.mode-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px;
  text-align: left; box-shadow: 0 2px 10px rgba(36,30,26,.04);
}
.mode-card-glossy {
  position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,.5);
  box-shadow: 0 10px 30px rgba(36,30,26,.10), inset 0 1px 0 rgba(255,255,255,.6);
}
.mode-card-glossy::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(135deg, rgba(255,255,255,.55) 0%, rgba(255,255,255,.12) 32%, rgba(255,255,255,0) 55%);
}
.mode-card-glossy::after {
  content: ""; position: absolute; top: -60%; left: -20%; width: 55%; height: 220%;
  background: linear-gradient(100deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.75) 50%, rgba(255,255,255,0) 100%);
  transform: rotate(8deg); pointer-events: none;
}
.mode-card-local { background: linear-gradient(160deg, #FFF4EF 0%, #FFFFFF 55%); }
.mode-card-live { background: linear-gradient(160deg, #EEF4FF 0%, #FFFFFF 55%); }
.mode-card-glossy > * { position: relative; z-index: 1; }
.mode-badge {
  display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: .74rem; font-weight: 700;
  margin-bottom: 12px;
}
.mode-badge-local {
  background: linear-gradient(135deg, #FFB199, var(--accent) 60%); color: #fff;
  box-shadow: 0 2px 8px rgba(255,107,74,.35), inset 0 1px 0 rgba(255,255,255,.5);
}
.mode-badge-live {
  background: linear-gradient(135deg, #9EBBF7, #5B8DEF 60%); color: #fff;
  box-shadow: 0 2px 8px rgba(91,141,239,.35), inset 0 1px 0 rgba(255,255,255,.5);
}
.mode-card p { margin: 0; color: var(--text-2); font-size: .88rem; line-height: 1.6; }
.cost-highlight {
  display: inline-flex; align-items: baseline; font-weight: 800; color: var(--accent-hover);
  background: var(--accent-soft); padding: 1px 8px; border-radius: 6px; font-size: 1.02em;
}
.cost-highlight-unit { font-size: .72em; font-weight: 700; margin-left: 1px; }

.download { max-width: 1100px; margin: 70px auto; padding: 0 40px; text-align: center; }
.download h2 { font-size: 1.8rem; margin: 0 0 8px; }
.download-intro { color: var(--text-2); margin: 0 0 24px; font-size: .92rem; }

.access-form {
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin: 0 auto 10px;
  max-width: 560px;
}
#accessForm[hidden], #platformGrid[hidden] { display: none; }
.access-form input {
  flex: 1; min-width: 160px; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px;
  font-size: .92rem; font-family: inherit;
}
.access-form input:focus { outline: none; border-color: var(--accent); }
.access-error { color: #C0392B; font-size: .84rem; font-weight: 600; margin: 8px 0 0; }

.platform-detected-note { color: var(--text-3); font-size: .8rem; margin: 20px 0 0; }
.platform-detected-note .link-secondary { display: inline; margin-top: 0; font-size: .8rem; border: none; background: none; padding: 0; cursor: pointer; font-family: inherit; }
.platform-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin-top: 12px; }
.platform-card {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 16px; padding: 28px 22px;
}
.platform-card.disabled { opacity: .6; }
.platform-icon { font-size: 2rem; margin-bottom: 10px; }
.platform-card h3 { margin: 0 0 4px; }
.muted { color: var(--text-3); font-size: .82rem; margin: 0 0 16px; }
.download-note { color: var(--text-3); font-size: .78rem; margin-top: 24px; line-height: 1.6; }

.site-footer { text-align: center; padding: 30px 24px 50px; color: var(--text-3); font-size: .78rem; }
.legal-note { max-width: 640px; margin: 0 auto 16px; line-height: 1.6; }
.site-footer a { color: var(--text-2); text-decoration: none; margin: 0 8px; }
.site-footer a:hover { color: var(--text-1); }

.page-header { max-width: 1400px; margin: 30px auto 10px; padding: 0 40px; }
.page-header h1 { font-size: 2rem; margin: 0 0 10px; }
.page-header p { color: var(--text-2); font-size: 1rem; max-width: 640px; margin: 0; }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-text, .hero-visual { min-width: 0; }
  .hero-sub { margin-inline: auto; }
  .photo-stack { display: flex; gap: 10px; overflow-x: auto; aspect-ratio: auto; padding: 6px 4px 16px; }
  .stack-card { position: static; width: 120px; height: 150px; flex-shrink: 0; transform: none !important; }
  .stack-card:hover { transform: none !important; }
}

/* --------------------------------------------------------- About modal --- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(24,18,14,.55); backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center; padding: 24px; z-index: 100;
  opacity: 0; visibility: hidden; transition: opacity .2s ease, visibility .2s ease;
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-card {
  background: var(--card); border-radius: 20px; max-width: 780px; width: 100%;
  max-height: 88vh; overflow-y: auto; position: relative;
  box-shadow: 0 30px 80px rgba(0,0,0,.32);
  transform: translateY(18px) scale(.97); transition: transform .2s ease;
}
.modal-overlay.open .modal-card { transform: translateY(0) scale(1); }
.modal-close {
  position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; border-radius: 50%;
  border: none; background: rgba(255,255,255,.92); font-size: 1.3rem; line-height: 1; cursor: pointer;
  color: var(--text-1); display: flex; align-items: center; justify-content: center; z-index: 2;
}
.modal-close:hover { background: #fff; }
.modal-banner { position: relative; }
.modal-banner img { width: 100%; height: 220px; object-fit: contain; background: var(--bg-soft); display: block; border-radius: 20px 20px 0 0; }
.modal-banner-text {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 20px 28px;
  background: linear-gradient(0deg, rgba(0,0,0,.68), rgba(0,0,0,0));
  color: #fff;
}
.modal-banner-text h2 { margin: 0 0 4px; font-size: 1.5rem; }
.modal-banner-text p { margin: 0; font-size: .9rem; opacity: .92; }
.modal-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; padding: 24px 28px 28px; }
.modal-tile .feature-icon { margin-bottom: 10px; }
.modal-tile h3 { margin: 0 0 6px; font-size: .96rem; }
.modal-tile p { margin: 0; color: var(--text-2); font-size: .82rem; line-height: 1.55; }

@media (max-width: 700px) {
  .modal-tiles { grid-template-columns: 1fr; }
  .modal-banner img { height: 160px; }
}