:root {
  --color-primary: #5645d4;
  --color-primary-pressed: #4534b3;
  --color-primary-deep: #3a2a99;
  --color-on-primary: #ffffff;
  --color-brand-navy: #0a1530;
  --color-brand-navy-deep: #070f24;
  --color-brand-navy-mid: #1a2a52;
  --color-link-blue: #0075de;
  --color-brand-orange: #dd5b00;
  --color-brand-pink: #ff64c8;
  --color-brand-purple: #7b3ff2;
  --color-brand-teal: #2a9d99;
  --color-brand-green: #1aae39;
  --color-brand-yellow: #f5d75e;
  --color-card-tint-peach: #ffe8d4;
  --color-card-tint-rose: #fde0ec;
  --color-card-tint-mint: #d9f3e1;
  --color-card-tint-lavender: #e6e0f5;
  --color-card-tint-sky: #dcecfa;
  --color-card-tint-yellow: #fef7d6;
  --color-card-tint-yellow-bold: #f9e79f;
  --color-card-tint-cream: #f8f5e8;
  --color-canvas: #ffffff;
  --color-surface: #f6f5f4;
  --color-surface-soft: #fafaf9;
  --color-hairline: #e5e3df;
  --color-hairline-soft: #ede9e4;
  --color-hairline-strong: #c8c4be;
  --color-ink-deep: #000000;
  --color-ink: #1a1a1a;
  --color-charcoal: #37352f;
  --color-slate: #5d5b54;
  --color-steel: #787671;
  --color-stone: #a4a097;
  --color-muted: #bbb8b1;
  --color-on-dark: #ffffff;
  --color-on-dark-muted: #a4a097;

  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-xxl: 20px;
  --rounded-full: 9999px;

  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 20px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-section: 64px;
  --space-hero: 120px;

  --font-sans: "Notion Sans", Inter, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow-mockup: rgba(15, 15, 15, 0.2) 0px 24px 48px -8px;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-canvas);
  font-size: 16px;
  line-height: 1.55;
}
a { color: var(--color-link-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 32px; }

.promo {
  background: var(--color-surface);
  text-align: center;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-hairline);
}

.header {
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 64px;
}
.logo {
  font-weight: 600;
  color: var(--color-ink);
  font-size: 18px;
  letter-spacing: -0.3px;
}
.logo:hover { text-decoration: none; color: var(--color-ink); }
.nav { display: flex; flex-wrap: wrap; gap: 4px 18px; flex: 1; }
.nav a { color: var(--color-charcoal); font-size: 14px; font-weight: 500; }
.nav a.on { color: var(--color-ink); }
.back { margin-left: auto; font-size: 13px; color: var(--color-steel); }

.hero {
  background: var(--color-brand-navy);
  color: var(--color-on-dark);
  padding: 96px 0 72px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  transform: rotate(-8deg);
}
.hero::before { background: #ff64c8; top: 48px; left: 18%; }
.hero::after { background: #f5d75e; top: 80px; right: 22%; }
.dot {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 3px;
}
.dot.a { background: #5645d4; left: 28%; bottom: 40px; }
.dot.b { background: #1aae39; right: 16%; bottom: 72px; }
.dot.c { background: #dd5b00; left: 12%; top: 42%; }
.hero h1 {
  font-size: clamp(36px, 6vw, 80px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -2px;
  margin: 0 0 16px;
  color: #fff;
}
.hero p {
  margin: 0 auto 28px;
  max-width: 36em;
  color: var(--color-on-dark-muted);
  font-size: 18px;
  line-height: 1.5;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.mockup {
  background: var(--color-canvas);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  box-shadow: var(--shadow-mockup);
  max-width: 880px;
  margin: 48px auto 0;
  text-align: left;
  overflow: hidden;
}
.mockup-bar {
  background: var(--color-surface);
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  border-bottom: 1px solid var(--color-hairline);
  color: var(--color-slate);
}
.mockup-body { padding: 20px; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.kanban {
  background: var(--color-surface-soft);
  border: 1px solid var(--color-hairline);
  border-radius: 8px;
  padding: 12px;
  min-height: 88px;
  font-size: 13px;
}
.kanban b { display: block; margin-bottom: 8px; }

.hero.page {
  background: var(--color-canvas);
  color: var(--color-ink);
  text-align: left;
  padding: 64px 0 24px;
  overflow: visible;
}
.hero.page::before, .hero.page::after { display: none; }
.hero.page h1 {
  color: var(--color-ink);
  font-size: 48px;
  letter-spacing: -0.5px;
  line-height: 1.15;
}
.hero.page p { margin: 0; color: var(--color-slate); max-width: 40em; }

.section { padding: 64px 0; }
.section h2 {
  font-size: 36px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin: 0 0 24px;
}
.muted { color: var(--color-slate); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.card {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: 24px;
}
.card h3 { margin: 0 0 8px; font-size: 22px; font-weight: 600; }
.card p { margin: 0; color: var(--color-slate); font-size: 14px; }
.card.peach { background: var(--color-card-tint-peach); border: 0; }
.card.rose { background: var(--color-card-tint-rose); border: 0; }
.card.mint { background: var(--color-card-tint-mint); border: 0; }
.card.lavender { background: var(--color-card-tint-lavender); border: 0; }
.card.sky { background: var(--color-card-tint-sky); border: 0; }
.card.yellow { background: var(--color-card-tint-yellow-bold); border: 0; }
.card.cream { background: var(--color-card-tint-cream); border: 0; }

.stat h3 { font-size: 36px; letter-spacing: -0.5px; }

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  border-bottom: 1px solid var(--color-hairline);
  padding: 24px 0;
  display: flex;
  gap: 16px;
}
.list .date { color: var(--color-steel); font-size: 13px; min-width: 96px; }

.ph {
  background: var(--color-surface);
  color: var(--color-stone);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-md);
}

.btn, button, .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  border: 0;
  border-radius: var(--rounded-md);
  cursor: pointer;
  line-height: 1.3;
}
.btn:hover, .btn-primary:hover { text-decoration: none; color: #fff; background: var(--color-primary-pressed); }
.btn-secondary {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-hairline-strong);
}
.btn-secondary:hover { color: var(--color-ink); background: var(--color-surface); }
.btn-on-dark {
  background: #fff;
  color: var(--color-ink);
}
.btn-on-dark:hover { color: var(--color-ink); background: #fff; }
.btn-ghost-dark {
  background: transparent;
  color: #fff;
  border: 1px solid var(--color-on-dark-muted);
}
.btn-ghost-dark:hover { color: #fff; }
.tag {
  display: inline-block;
  background: var(--color-card-tint-lavender);
  color: #391c57;
  font-size: 13px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 6px;
}

form label { display: block; margin: 0 0 4px; font-size: 14px; font-weight: 500; }
form input, form textarea {
  width: 100%;
  max-width: 480px;
  padding: 12px 16px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--rounded-md);
  font: inherit;
  margin-bottom: 12px;
  height: auto;
  min-height: 44px;
}
form input:focus, form textarea:focus {
  outline: none;
  border: 2px solid var(--color-primary);
}

.footer {
  border-top: 1px solid var(--color-hairline);
  padding: 64px 0 40px;
  color: var(--color-steel);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.footer h3 { margin: 0 0 12px; font-size: 14px; color: var(--color-charcoal); font-weight: 600; }
.footer a { color: var(--color-steel); display: block; margin: 6px 0; }

@media (max-width: 800px) {
  .grid, .grid-2, .grid-4, .footer-grid, .mockup-body { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; letter-spacing: -1px; }
  .nav { display: none; }
}

.ph { overflow: hidden; }
.ph img { width: 100%; height: 100%; object-fit: cover; display: block; }