:root {
  --bg: #ffffff;
  --bg-elevated: #f5f5f7;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --separator: rgba(0, 0, 0, 0.1);
  --accent: #ff5e3a;
  --accent-2: #ff2d55;
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  --radius-widget: 26px;
  --max: 1040px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-elevated: #161618;
    --text: #f5f5f7;
    --text-secondary: #a1a1a6;
    --separator: rgba(255, 255, 255, 0.14);
    --accent: #ff6f4f;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 22px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--separator);
}

.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  font-size: 19px;
}

.brand:hover { text-decoration: none; }

.brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.nav-links {
  display: flex;
  gap: 22px;
  font-size: 14px;
}

.nav-links a { color: var(--text-secondary); }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.hero {
  text-align: center;
  padding: 88px 0 40px;
}

.hero .icon {
  width: 128px;
  height: 128px;
  border-radius: 29px;
  box-shadow: 0 18px 40px rgba(255, 45, 85, 0.3);
}

.hero h1 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
  font-size: clamp(48px, 9vw, 88px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin: 28px 0 12px;
}

.hero .tagline {
  font-size: clamp(21px, 3vw, 28px);
  color: var(--text-secondary);
  font-weight: 500;
  margin: 0 auto 32px;
  max-width: 620px;
}

.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
  font-size: 17px;
}

.cta:hover { text-decoration: none; opacity: 0.9; }

.cta.soon { cursor: default; opacity: 0.85; }

.cta-note {
  display: block;
  margin-top: 14px;
  font-size: 14px;
  color: var(--text-secondary);
}

.showcase {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  padding: 40px 0 96px;
}

.widget {
  width: 170px;
  height: 170px;
  border-radius: var(--radius-widget);
  padding: 16px;
  display: flex;
  flex-direction: column;
  color: #fff;
  box-shadow: var(--card-shadow);
  font-family: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, sans-serif;
  position: relative;
  overflow: hidden;
}

.widget .symbol { font-size: 20px; line-height: 1; }
.widget .spacer { flex: 1; }
.widget .number { font-size: 50px; font-weight: 700; line-height: 1; letter-spacing: -0.02em; }
.widget .unit { font-size: 11px; font-weight: 600; letter-spacing: 0.04em; opacity: 0.8; text-transform: uppercase; margin-top: 2px; }
.widget .title { font-size: 15px; font-weight: 600; margin-top: 4px; }

.widget.classic { background: linear-gradient(180deg, #4aa3ff, #0a6cff); }
.widget.vivid {
  background:
    radial-gradient(circle at 15% 15%, #ff9f0a 0, transparent 55%),
    radial-gradient(circle at 85% 30%, #ff375f 0, transparent 55%),
    radial-gradient(circle at 50% 100%, #bf2fbf 0, transparent 60%),
    #ff2d55;
}
.widget.night {
  background:
    radial-gradient(circle at 100% 100%, rgba(191, 90, 242, 0.75) 0, rgba(191, 90, 242, 0.15) 45%, transparent 70%),
    #000;
}
.widget.minimal {
  background: var(--bg-elevated);
  color: var(--text);
}
.widget.minimal .number,
.widget.minimal .symbol { color: #30d158; }
.widget.minimal .unit { color: var(--text-secondary); opacity: 1; }

.widget.serif .number { font-family: "New York", ui-serif, Georgia, serif; }

.widget.wide { width: 360px; flex-direction: row; align-items: flex-end; }
.widget.wide .left { display: flex; flex-direction: column; height: 100%; flex: 1; }
.widget.wide .right { text-align: right; }
.widget.wide .number { font-size: 62px; }
.widget.wide .date { font-size: 12px; font-weight: 500; opacity: 0.8; }

.lock {
  width: 300px;
  height: 170px;
  border-radius: var(--radius-widget);
  background: linear-gradient(135deg, #2b1f3d, #000);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: var(--card-shadow);
}

.lock .date { font-size: 13px; font-weight: 600; opacity: 0.75; }
.lock .time { font-family: ui-rounded, "SF Pro Rounded", -apple-system, sans-serif; font-size: 52px; font-weight: 700; line-height: 1; }
.lock .row { display: flex; align-items: center; gap: 12px; margin-top: 6px; }

.lock .ring {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: conic-gradient(rgba(255, 255, 255, 0.95) 0 72%, rgba(255, 255, 255, 0.25) 72% 100%);
  display: grid;
  place-items: center;
}

.lock .ring span {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #1a1424;
  display: grid;
  place-items: center;
  font-family: ui-rounded, -apple-system, sans-serif;
  font-weight: 700;
  font-size: 17px;
  line-height: 1;
}

.lock .rect { text-align: left; line-height: 1.15; }
.lock .rect .t { font-size: 13px; font-weight: 600; }
.lock .rect .n { font-family: ui-rounded, -apple-system, sans-serif; font-size: 22px; font-weight: 700; }
.lock .rect .d { font-size: 11px; opacity: 0.7; }

section.block {
  padding: 88px 0;
  border-top: 1px solid var(--separator);
}

section.block h2 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
  font-size: clamp(34px, 5vw, 48px);
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0 0 14px;
  text-align: center;
}

section.block .lede {
  text-align: center;
  color: var(--text-secondary);
  font-size: 21px;
  max-width: 640px;
  margin: 0 auto 48px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.card {
  background: var(--bg-elevated);
  border-radius: 22px;
  padding: 26px;
}

.card .glyph {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 22px;
  color: #fff;
  margin-bottom: 16px;
}

.card h3 { margin: 0 0 6px; font-size: 19px; }
.card p { margin: 0; color: var(--text-secondary); font-size: 15px; }

.premium {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-elevated);
  border-radius: 28px;
  padding: 40px;
  text-align: center;
}

.premium .price {
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 8px 0 4px;
}

.premium .price-note { color: var(--text-secondary); margin: 0 0 28px; }

.premium ul {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  text-align: left;
  display: inline-grid;
  gap: 10px;
}

.premium li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 700;
  margin-right: 10px;
}

.doc {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 0 96px;
}

.doc h1 {
  font-size: clamp(36px, 6vw, 48px);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 8px;
}

.doc .updated { color: var(--text-secondary); margin: 0 0 40px; }
.doc h2 { font-size: 24px; margin: 40px 0 10px; letter-spacing: -0.01em; }
.doc p, .doc li { color: var(--text); }
.doc ul { padding-left: 22px; }

.summary {
  background: var(--bg-elevated);
  border-radius: 20px;
  padding: 22px 26px;
  margin-bottom: 8px;
}

.summary p { margin: 0; }

details {
  border-bottom: 1px solid var(--separator);
  padding: 18px 0;
}

details summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 18px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; color: var(--text-secondary); font-weight: 400; font-size: 22px; line-height: 1; }
details[open] summary::after { content: "−"; }
details > div { padding-top: 10px; color: var(--text-secondary); }
details ol, details ul { padding-left: 22px; margin: 8px 0 0; }

.contact {
  margin-top: 48px;
  background: var(--bg-elevated);
  border-radius: 22px;
  padding: 28px;
  text-align: center;
}

.contact h2 { margin-top: 0; }

footer {
  border-top: 1px solid var(--separator);
  padding: 28px 0 40px;
  font-size: 13px;
  color: var(--text-secondary);
}

footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

footer nav { display: flex; gap: 18px; }
footer a { color: var(--text-secondary); }

@media (max-width: 640px) {
  .hero { padding-top: 56px; }
  .widget.wide { width: 100%; max-width: 360px; }
  .lock { width: 100%; max-width: 300px; }
  .premium { padding: 28px 22px; }
  .nav-links { gap: 16px; }
  .hide-narrow { display: none; }
}