:root {
  --color-primary: #f36458;
  --color-black: #0b0b0b;
  --color-pure-black: #000000;
  --color-electric-blue: #0052ef;
  --color-light-blue: #55beff;
  --color-neon-green: #19d600;
  --color-error: #dd0000;
  --color-surface: #212121;
  --color-medium-dark: #353535;
  --color-white: #ffffff;
  --color-light-gray: #ededed;
  --color-silver: #b9b9b9;
  --color-medium-gray: #797979;
  --color-gpc-green: #37cd84;
  --rounded-xs: 3px;
  --rounded-sm: 5px;
  --rounded-md: 6px;
  --rounded-lg: 12px;
  --rounded-pill: 99999px;
  --space-5: 8px;
  --space-6: 12px;
  --space-7: 16px;
  --space-8: 24px;
  --space-9: 32px;
  --space-10: 48px;
  --space-11: 64px;
  --space-12: 96px;
  --font-display: waldenburgNormal, Inter, "Space Grotesk", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: waldenburgNormal, Inter, "Space Grotesk", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", monospace;
}

* { box-sizing: border-box; }
html { background: var(--color-black); }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-silver);
  background: var(--color-black);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}
a { color: var(--color-silver); text-decoration: none; }
a:hover { color: var(--color-electric-blue); }
.wrap { max-width: 1440px; margin: 0 auto; padding: 0 32px; }

.header {
  background: rgba(11, 11, 11, 0.86);
  border-bottom: 1px solid var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 56px;
  flex-wrap: wrap;
}
.logo {
  color: var(--color-white);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: -0.2px;
}
.logo:hover { color: var(--color-electric-blue); }
.nav { display: flex; flex-wrap: wrap; gap: 4px 20px; flex: 1; }
.nav a { color: var(--color-silver); font-size: 16px; }
.nav a.on { color: var(--color-white); }
.back { margin-left: auto; font-size: 12px; color: var(--color-medium-gray); font-family: var(--font-mono); text-transform: uppercase; }

.tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-medium-gray);
  display: inline-block;
  margin-bottom: 16px;
}

.hero { padding: 96px 0 80px; }
.hero h1 {
  font-size: clamp(38px, 8vw, 112px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -4.48px;
  color: var(--color-white);
  margin: 0 0 24px;
  max-width: 14ch;
  font-feature-settings: "cv01", "cv11", "cv12", "cv13", "ss07";
}
.hero p {
  margin: 0 0 24px;
  color: var(--color-silver);
  max-width: 38em;
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: -0.18px;
}

.btn, form button {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 8px 16px;
  border: none;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  border-radius: var(--rounded-pill);
  cursor: pointer;
  text-decoration: none;
}
.btn:hover, form button:hover {
  background: var(--color-electric-blue);
  color: var(--color-white);
}
.btn-ghost {
  background: var(--color-black);
  color: var(--color-silver);
  padding: 8px 12px;
}
.btn-ghost:hover { background: var(--color-electric-blue); color: var(--color-white); }
.btn-white {
  background: var(--color-white);
  color: var(--color-black);
  border: 1px solid var(--color-black);
}
.btn-white:hover { background: var(--color-electric-blue); color: var(--color-white); border-color: var(--color-electric-blue); }

.section { padding: 64px 0; }
.section h2 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -1.68px;
  color: var(--color-white);
  margin: 0 0 32px;
}
.muted { color: var(--color-silver); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-medium-dark);
  border-radius: var(--rounded-md);
  padding: 24px;
}
.card h3 {
  margin: 8px 0;
  font-size: 24px;
  font-weight: 425;
  line-height: 1.24;
  letter-spacing: -0.24px;
  color: var(--color-white);
}
.card p { margin: 0; color: var(--color-silver); font-size: 13px; }

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  border-bottom: 1px solid var(--color-surface);
  padding: 16px 0;
  color: var(--color-silver);
}
.list .date {
  color: var(--color-medium-gray);
  font-size: 13px;
  margin-right: 12px;
  font-family: var(--font-mono);
  text-transform: uppercase;
}

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

.code {
  background: var(--color-pure-black);
  border: 1px solid var(--color-surface);
  border-radius: var(--rounded-md);
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--color-silver);
  line-height: 1.5;
}
.code .g { color: var(--color-neon-green); }
.code .r { color: var(--color-primary); }

form label { display: block; margin: 0 0 4px; font-size: 13px; color: var(--color-medium-gray); }
form input, form textarea {
  width: 100%;
  max-width: 480px;
  padding: 8px 12px;
  border: 1px solid var(--color-surface);
  background: var(--color-black);
  color: var(--color-silver);
  font: inherit;
  margin-bottom: 12px;
  border-radius: var(--rounded-xs);
}
form input:focus, form textarea:focus {
  outline: 2px solid var(--color-electric-blue);
  background: #072227;
}
form textarea { min-height: 120px; }

.footer {
  padding: 64px 0 80px;
  border-top: 1px solid var(--color-surface);
  color: var(--color-silver);
  font-size: 13px;
}
.footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; }
.footer h4 {
  margin: 0 0 16px;
  color: var(--color-white);
  font-size: 13px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-weight: 400;
}
.footer a { color: var(--color-silver); display: block; margin-bottom: 8px; }
.footer a:hover { color: var(--color-electric-blue); }
.footer p { margin: 0 0 4px; color: var(--color-medium-gray); }
.footer-bottom { grid-column: 1 / -1; margin-top: 32px; }

@media (max-width: 1024px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .grid-2, .footer .wrap { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 38px; letter-spacing: -1.14px; }
  .nav { display: none; }
}

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