:root {
  --color-primary: #5e6ad2;
  --color-on-primary: #ffffff;
  --color-primary-hover: #828fff;
  --color-primary-focus: #5e69d1;
  --color-ink: #f7f8f8;
  --color-ink-muted: #d0d6e0;
  --color-ink-subtle: #8a8f98;
  --color-ink-tertiary: #62666d;
  --color-canvas: #010102;
  --color-surface-1: #0f1011;
  --color-surface-2: #141516;
  --color-surface-3: #18191a;
  --color-surface-4: #191a1b;
  --color-hairline: #23252a;
  --color-hairline-strong: #34343a;
  --color-hairline-tertiary: #3e3e44;
  --color-inverse-canvas: #ffffff;
  --color-inverse-ink: #000000;
  --color-brand-secure: #7a7fad;
  --color-semantic-success: #27a644;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-xxl: 24px;
  --rounded-pill: 9999px;
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-section: 96px;
  --font-display: "Linear Display", "SF Pro Display", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Linear Text", "SF Pro Text", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Linear Mono", ui-monospace, "SF Mono", Menlo, "Segoe UI", "PingFang SC", "Microsoft YaHei", monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font-body);
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.05px;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

.header {
  background: var(--color-canvas);
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--color-hairline);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 56px;
  flex-wrap: wrap;
}
.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.4px;
  color: var(--color-ink);
}
.logo:hover { color: var(--color-ink); text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 20px; flex: 1; }
.nav a { color: var(--color-ink-subtle); font-size: 14px; }
.nav a.on { color: var(--color-ink); }
.back { margin-left: auto; font-size: 12px; color: var(--color-ink-tertiary); }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.4px;
  color: var(--color-ink-subtle);
  margin-bottom: 14px;
}
.hero { padding: 80px 0 48px; }
.hero h1 {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -2.4px;
  margin: 0 0 18px;
  max-width: 14ch;
}
.hero p {
  margin: 0 0 28px;
  color: var(--color-ink-muted);
  font-size: 18px;
  letter-spacing: -0.1px;
  max-width: 38em;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.btn,
form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
  padding: 8px 14px;
  min-height: 36px;
  border-radius: var(--rounded-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary,
form button {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.btn-primary:hover,
form button:hover { background: var(--color-primary-hover); color: var(--color-on-primary); }
.btn-secondary {
  background: var(--color-surface-1);
  color: var(--color-ink);
  border-color: var(--color-hairline);
}
.btn-inverse {
  background: var(--color-inverse-canvas);
  color: var(--color-inverse-ink);
}

.status {
  display: inline-block;
  background: var(--color-surface-2);
  color: var(--color-ink-muted);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: var(--rounded-pill);
}
.status.ok { color: var(--color-semantic-success); }

.section { padding: 80px 0; }
.section h2 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -1px;
  margin: 0 0 24px;
}
.muted { color: var(--color-ink-subtle); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.card {
  background: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: 24px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}
.card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.4px;
}
.card p { margin: 0; color: var(--color-ink-subtle); font-size: 14px; }
.card.featured {
  background: var(--color-surface-2);
  border-color: var(--color-hairline-strong);
}

.mock {
  background: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-xl);
  padding: 24px;
  margin-top: 24px;
}
.mock-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-hairline);
  font-size: 14px;
}
.mock-row:last-child { border-bottom: 0; }
.mono { font-family: var(--font-mono); font-size: 13px; color: var(--color-ink-tertiary); }

.ph {
  background: var(--color-surface-2);
  color: var(--color-ink-tertiary);
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-md);
}

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  gap: 16px;
}
.list .date { color: var(--color-ink-tertiary); font-family: var(--font-mono); font-size: 12px; min-width: 7.5em; }

.cta-banner {
  background: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: 48px;
}
.cta-banner h2 {
  font-size: 28px;
  letter-spacing: -0.6px;
  margin: 0 0 12px;
}

form label { display: block; margin: 0 0 6px; font-size: 14px; color: var(--color-ink-subtle); }
form input, form textarea {
  width: 100%;
  max-width: 480px;
  padding: 8px 12px;
  border: 1px solid var(--color-hairline);
  background: var(--color-surface-1);
  color: var(--color-ink);
  font: inherit;
  margin-bottom: 12px;
  border-radius: var(--rounded-md);
}
form input:focus, form textarea:focus {
  outline: 2px solid rgba(94, 105, 209, 0.5);
  outline-offset: 1px;
}

.footer {
  padding: 64px 32px;
  color: var(--color-ink-subtle);
  font-size: 12px;
  border-top: 1px solid var(--color-hairline);
}
.footer p { margin: 0 0 4px; }

@media (max-width: 800px) {
  .grid, .grid-2 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; letter-spacing: -1px; }
  .section h2 { font-size: 28px; }
}

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