:root {
  --color-primary: #ffffff;
  --color-primary-pressed: #e8e8e8;
  --color-on-primary: #000000;
  --color-ink: #f4f4f6;
  --color-body: #cdcdcd;
  --color-charcoal: #d3d3d4;
  --color-mute: #9c9c9d;
  --color-ash: #6a6b6c;
  --color-stone: #434345;
  --color-on-dark: #ffffff;
  --color-on-dark-mute: rgba(255,255,255,0.72);
  --color-canvas: #07080a;
  --color-surface: #0d0d0d;
  --color-surface-elevated: #101111;
  --color-surface-card: #121212;
  --color-button-fg: #18191a;
  --color-hairline: #242728;
  --color-hairline-soft: rgba(255,255,255,0.08);
  --color-hairline-strong: rgba(255,255,255,0.16);
  --color-accent-blue: #57c1ff;
  --color-accent-red: #ff6161;
  --color-accent-green: #59d499;
  --color-accent-yellow: #ffc533;
  --color-hero-stripe-start: #ff5757;
  --color-hero-stripe-end: #a1131a;
  --color-key-bg-start: #121212;
  --color-key-bg-end: #0d0d0d;
  --rounded-none: 0px;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 10px;
  --rounded-xl: 16px;
  --rounded-full: 9999px;
  --space-xxs: 2px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-section: 96px;
  --font-display: Inter, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: Inter, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font-body);
  font-feature-settings: "calt", "kern", "liga", "ss03";
  color: var(--color-body); background: var(--color-canvas);
  font-size: 16px; line-height: 1.6;
}
a { color: var(--color-on-dark); text-decoration: none; font-weight: 500; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.header { background: var(--color-canvas); border-bottom: 1px solid var(--color-hairline); }
.header-inner { display: flex; align-items: center; gap: 20px; min-height: 56px; flex-wrap: wrap; }
.logo { font-weight: 500; color: #fff; font-size: 15px; letter-spacing: 0.2px; }
.logo:hover { text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 16px; flex: 1; }
.nav a { color: var(--color-body); font-size: 14px; font-weight: 500; }
.nav a.on { color: #fff; }
.back { margin-left: auto; font-size: 12px; color: var(--color-mute); font-weight: 400; }
.header-cta {
  background: #fff; color: #000; border-radius: 8px;
  padding: 8px 16px; height: 36px; display: inline-flex; align-items: center;
  font-size: 14px; font-weight: 500; letter-spacing: 0.2px;
}
.header-cta:hover { background: #e8e8e8; text-decoration: none; color: #000; }

.hero { position: relative; padding: 96px 0 72px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 280px;
  background: repeating-linear-gradient(
    -32deg,
    transparent 0 36px,
    var(--color-hero-stripe-start) 36px 52px,
    var(--color-hero-stripe-end) 52px 68px,
    transparent 68px 120px
  );
  opacity: 0.85; pointer-events: none; mask-image: linear-gradient(#000, transparent);
}
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; position: relative; }
.hero h1 {
  font-size: 64px; font-weight: 600; line-height: 1.1; color: var(--color-ink);
  margin: 0 0 16px; letter-spacing: 0;
}
.hero p { margin: 0; max-width: 36em; }
.hero-actions { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }

.palette {
  background: var(--color-surface); border: 1px solid var(--color-hairline);
  border-radius: 16px; overflow: hidden;
}
.palette-bar { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--color-hairline); }
.dot { width: 10px; height: 10px; border-radius: 50%; background: #434345; }
.palette-search {
  flex: 1; background: var(--color-surface-elevated); border-radius: 8px;
  padding: 8px 12px; color: var(--color-mute); font-size: 14px;
}
.prow { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 6px; margin: 4px 8px; }
.prow.active { background: var(--color-surface-card); }
.icon { width: 28px; height: 28px; border-radius: 8px; background: var(--color-surface-card); }
.icon.y { background: rgba(255,197,51,0.15); }
.icon.r { background: rgba(255,97,97,0.15); }
.icon.g { background: rgba(89,212,153,0.15); }
.icon.b { background: rgba(87,193,255,0.15); }
.kbd {
  margin-left: auto; font-size: 13px; color: var(--color-body);
  background: linear-gradient(#121212, #0d0d0d);
  border-radius: 4px; padding: 1px 6px; height: 20px; line-height: 18px;
  border: 1px solid var(--color-hairline);
}

.btn, form button {
  display: inline-flex; align-items: center; justify-content: center;
  background: #fff; color: #000; border: 0; border-radius: 8px;
  padding: 8px 16px; height: 36px;
  font-family: var(--font-body); font-size: 14px; font-weight: 500; letter-spacing: 0.2px; cursor: pointer;
}
.btn:hover, form button:hover { background: #e8e8e8; text-decoration: none; color: #000; }
.btn-ghost { background: transparent; color: #fff; border: 1px solid var(--color-hairline-strong); }
.btn-ghost:hover { color: #fff; background: var(--color-surface-elevated); }
.btn-soft { background: var(--color-surface-elevated); color: #fff; }
.btn-soft:hover { color: #fff; }

.section { padding: 96px 0; }
.section h2 { font-size: 56px; font-weight: 500; line-height: 1.17; letter-spacing: 0.2px; color: var(--color-ink); margin: 0 0 24px; }
.muted { color: var(--color-mute); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card {
  background: var(--color-surface); border: 1px solid var(--color-hairline);
  border-radius: 10px; padding: 24px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; font-weight: 500; color: #fff; }
.card p { margin: 0; font-size: 14px; }
.ext { display: flex; gap: 16px; align-items: center; padding: 16px; }
.ext .icon { width: 48px; height: 48px; }

.ph {
  background: var(--color-surface-card); color: var(--color-ash);
  height: 140px; display: flex; align-items: center; justify-content: center;
  font-size: 13px; margin-bottom: 12px; border-radius: 10px;
}
.list { list-style: none; margin: 0; padding: 0; }
.list li { border-bottom: 1px solid var(--color-hairline); padding: 12px 0; color: var(--color-ink); }
.list .date { color: var(--color-mute); font-size: 13px; margin-right: 12px; }

.pills { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.pill { border-radius: 9999px; padding: 4px 10px; color: var(--color-body); font-size: 14px; }
.pill.on { background: var(--color-surface-elevated); color: #fff; }

form label { display: block; margin: 0 0 4px; font-size: 14px; color: #fff; }
form input, form textarea {
  width: 100%; max-width: 480px; padding: 8px 12px; height: 36px;
  border: 1px solid var(--color-hairline); border-radius: 8px;
  background: var(--color-surface-elevated); color: #fff; font: inherit; margin-bottom: 12px;
}
form textarea { height: auto; }
form input:focus, form textarea:focus { outline: none; border-color: var(--color-hairline-strong); }

.footer { border-top: 1px solid var(--color-hairline); padding: 64px 48px; color: var(--color-body); font-size: 14px; }
.footer p { margin: 0 0 4px; }

@media (max-width: 900px) {
  .hero h1 { font-size: 36px; }
  .section h2 { font-size: 32px; }
  .hero-grid, .grid, .grid-2 { grid-template-columns: 1fr; }
}

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