/*
 * Public visual layer ("atelier" finish): a calmer, studio-grade treatment of
 * the design tokens. Every rule is scoped under body.public-site so the Django
 * Admin keeps its own shell untouched.
 */

body.public-site {
  --color-bg: #f3f4f1;
  --color-surface: #fafaf7;
  --color-surface-raised: #ffffff;
  --color-text: #16181d;
  --color-muted: #5c616a;
  --color-primary: #1e3a4c;
  --color-primary-hover: #162c39;
  --color-secondary: #5c616a;
  --color-filament: #8a6d3b;
  --color-border: #d9d7ce;
  --color-focus: #1e3a4c;
  --shadow-card: 0 0.55rem 1.4rem color-mix(in srgb, #16181d 7%, transparent);
  --font-display: "IBM Plex Sans", "Noto Sans CJK SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --font-body: "IBM Plex Sans", "Noto Sans CJK SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --font-utility: "IBM Plex Mono", "Noto Sans Mono CJK SC", ui-monospace, "SFMono-Regular",
    monospace;
  --radius-sm: 0.4rem;
  --radius-md: 0.65rem;
  --radius-lg: 0.85rem;
}

html[data-theme="dark"] body.public-site {
  --color-bg: #0c0e12;
  --color-surface: #13151a;
  --color-surface-raised: #181b21;
  --color-text: #f2f0ea;
  --color-muted: #b7b4a9;
  --color-primary: #d7c39a;
  --color-primary-hover: #e6d6b4;
  --color-secondary: #b7b4a9;
  --color-filament: #d7c39a;
  --color-border: #26282e;
  --color-focus: #d7c39a;
  --shadow-card: 0 0.7rem 1.8rem rgb(0 0 0 / 32%);
}

body.public-site {
  font-feature-settings: "ss01" 1, "kern" 1;
}

body.public-site h1,
body.public-site h2,
body.public-site h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* 金色细线：为分节与卡片提供一致的 studio 签名。 */
body.public-site .section-heading::after,
body.public-site .contact-panel::before {
  content: "";
  position: absolute;
  width: 2.6rem;
  border-top: 1px solid var(--color-filament);
}

body.public-site .section-heading::after {
  inset: auto auto -0.9rem 0;
}

body.public-site .site-header {
  min-height: 0;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
}

body.public-site .header-inner {
  min-height: 4rem;
}

body.public-site .orbit-trace {
  display: none !important;
}

body.public-site .card {
  box-shadow: none;
}

body.public-site .project-card,
body.public-site .article-card,
body.public-site .tool-card,
body.public-site .search-result {
  transition: border-color 200ms ease, transform 200ms ease, background-color 200ms ease;
}

body.public-site .project-card:hover,
body.public-site .article-card:hover,
body.public-site .tool-card:hover,
body.public-site .search-result:hover {
  border-color: color-mix(in srgb, var(--color-primary) 38%, var(--color-border));
  transform: translateY(-0.15rem);
}

body.public-site .public-hero {
  min-height: min(100dvh, 42rem);
}

body.public-site .hero-content {
  padding-block: clamp(3rem, 8vw, 5.5rem);
}

body.public-site .hero-copy h1 {
  max-width: 12ch;
  margin-bottom: 0.4em;
  font-size: clamp(2.55rem, 7vw, 4.6rem);
  font-weight: 600;
  line-height: 1.08;
}

body.public-site .hero-mission {
  max-width: 38rem;
  color: var(--color-text);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.75;
}

body.public-site .eyebrow {
  letter-spacing: 0.14em;
  text-transform: none;
  font-size: 0.72rem;
}

body.public-site .section-block {
  padding-block: clamp(4.5rem, 9vw, 8rem) clamp(5rem, 10vw, 8.5rem);
}

body.public-site .section-heading {
  max-width: 36rem;
  margin-bottom: 2.5rem;
}

body.public-site .section-heading h2 {
  margin-bottom: 0.45em;
}

body.public-site .section-heading > p {
  color: var(--color-muted);
}

body.public-site .service-trace li strong {
  font-weight: 600;
}

body.public-site .service-trace li p {
  margin: 0.35rem 0 0;
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

body.public-site .project-card__body h3,
body.public-site .article-card__body h3,
body.public-site .tool-card__body > strong {
  font-weight: 600;
}

body.public-site .project-card__action,
body.public-site .article-card__action,
body.public-site .tool-card__action {
  margin-top: auto;
}

body.public-site .project-card,
body.public-site .article-card {
  display: flex;
  flex-direction: column;
}

body.public-site .project-card__body,
body.public-site .article-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

body.public-site .empty-collection {
  border-style: solid;
  background: transparent;
}

body.public-site .empty-collection__hint {
  margin: 0.35rem 0 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

body.public-site .contact-panel {
  position: relative;
  box-shadow: none;
  background: color-mix(in srgb, var(--color-surface) 70%, transparent);
}

body.public-site .contact-panel::before {
  inset: -1.1rem auto auto 0;
}

body.public-site .about-statement > p {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.6vw, 1.85rem);
  font-weight: 500;
  line-height: 1.6;
}

body.public-site .page-trail {
  background: color-mix(in srgb, var(--color-bg) 70%, var(--color-surface));
}

body.public-site .site-footer {
  color: var(--color-muted);
  font-size: 0.92rem;
}

@media (min-width: 48rem) {
  body.public-site .service-trace li {
    min-height: 10.5rem;
    align-content: start;
    padding: 1.25rem 1rem 1.5rem;
  }

  body.public-site .project-grid--featured {
    grid-template-columns: 1.35fr 1fr;
    gap: 1.15rem;
  }

  body.public-site .project-grid--featured > :first-child:nth-last-child(n + 3) {
    grid-row: span 2;
  }

  body.public-site .project-grid--featured > :first-child:nth-last-child(n + 3) .project-card__body h3 {
    font-size: clamp(1.45rem, 2.2vw, 1.85rem);
  }

  body.public-site .tool-grid--featured {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  body.public-site .knowledge-search__form[data-instant-search] {
    grid-template-columns: minmax(14rem, 2fr) minmax(9rem, 1fr) minmax(9rem, 1fr);
  }
}

@media (min-width: 64rem) {
  body.public-site .tool-grid--featured {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  body.public-site .project-card,
  body.public-site .article-card,
  body.public-site .tool-card,
  body.public-site .search-result {
    transition: none;
  }

  body.public-site .project-card:hover,
  body.public-site .article-card:hover,
  body.public-site .tool-card:hover,
  body.public-site .search-result:hover {
    transform: none;
  }
}