/* ==========================================================================
   doc.gezhibuge.com · 文档门户样式
   与三份文档一致：纸张浅色 / 石板深色，Material 字体与留白
   ========================================================================== */

@font-face {
  font-family: "Rubik";
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url("assets/font/rubik-v31-latin-300.woff2") format("woff2");
}
@font-face {
  font-family: "Rubik";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/font/rubik-v31-latin-regular.woff2") format("woff2");
}
@font-face {
  font-family: "Rubik";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/font/rubik-v31-latin-500.woff2") format("woff2");
}
@font-face {
  font-family: "Rubik";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/font/rubik-v31-latin-700.woff2") format("woff2");
}

:root {
  --sans: "Rubik", "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC",
    "Noto Sans SC", system-ui, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", Consolas, monospace;
  --grid: 61rem;
}

html[data-theme="paper"] {
  --bg: #f2eee5;
  --bg-light: #f7f3ea;
  --bg-lightest: #efe9dc;
  --card: #faf7f0;
  --fg: #29251f;
  --fg-light: #6b6153;
  --fg-lighter: #948977;
  --border: #ded5c3;
  --border-strong: #cabfa9;
  --accent: #8a4f2a;
  --accent-soft: rgba(138, 79, 42, 0.08);
  --accent-line: rgba(138, 79, 42, 0.35);
  --shadow: 0 0.4rem 1.4rem -0.8rem rgba(60, 45, 25, 0.35);
  --texture: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}

html[data-theme="slate"] {
  --bg: #0e0f0b;
  --bg-light: #14160f;
  --bg-lightest: #1f2318;
  --card: #16180f;
  --fg: rgba(230, 232, 224, 0.82);
  --fg-light: rgba(230, 232, 224, 0.56);
  --fg-lighter: rgba(230, 232, 224, 0.32);
  --border: rgba(230, 232, 224, 0.12);
  --border-strong: rgba(230, 232, 224, 0.24);
  --accent: #ed5487;
  --accent-soft: rgba(237, 84, 135, 0.12);
  --accent-line: rgba(237, 84, 135, 0.4);
  --shadow: 0 0.4rem 1.6rem -0.8rem rgba(0, 0, 0, 0.7);
  --texture: none;
}

* { box-sizing: border-box; }

html {
  font-size: 125%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  background-image: var(--texture);
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-decoration: none; }
::selection { background: var(--accent-soft); }

.grid {
  width: 100%;
  max-width: var(--grid);
  margin: 0 auto;
  padding: 0 0.8rem;
}

/* -------------------------------- 页头 -------------------------------- */
.top {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.top__inner {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  height: 2.4rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--fg);
  font-size: 0.8rem;
  font-weight: 500;
}
.brand svg { width: 1rem; height: 1rem; color: var(--accent); }
.top__spacer { flex: 1; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  padding: 0;
  border: 0;
  border-radius: 0.1rem;
  background: transparent;
  color: var(--fg-light);
  cursor: pointer;
}
.icon-btn:hover { background: var(--bg-lightest); color: var(--fg); }
.icon-btn svg { width: 1rem; height: 1rem; }
.icon-btn[aria-pressed="true"] { color: var(--accent); background: var(--accent-soft); }

/* -------------------------------- 首屏 -------------------------------- */
.hero { padding: 2.6rem 0 1.8rem; }
.hero__eyebrow {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: var(--fg-lighter);
  margin-bottom: 0.5rem;
}
.hero h1 {
  margin: 0 0 0.45rem;
  font-size: 2.5rem;
  font-weight: 300;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.hero p {
  margin: 0;
  max-width: 42rem;
  font-size: 0.82rem;
  line-height: 1.85;
  color: var(--fg-light);
}
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.1rem;
}
.tag {
  padding: 0.16rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  background: var(--bg-light);
  font-size: 0.6rem;
  color: var(--fg-light);
}

/* -------------------------------- 卡片区 -------------------------------- */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
  margin: 1.4rem 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}
.section-head h2 {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 500;
}
.section-head span { font-size: 0.6rem; color: var(--fg-lighter); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 0.8rem;
  margin-bottom: 2rem;
}

.doc-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 0.15rem;
  background: var(--card);
  color: var(--fg);
  overflow: hidden;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.doc-card:hover {
  border-color: var(--accent-line);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.doc-card__art {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-lightest);
  border-bottom: 1px solid var(--border);
}
.doc-card__art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  display: block;
  transition: transform 0.3s ease;
}
.doc-card:hover .doc-card__art img { transform: scale(1.02); }
.doc-card__badge {
  position: absolute;
  left: 0.5rem;
  top: 0.5rem;
  padding: 0.1rem 0.4rem;
  border-radius: 0.6rem;
  background: rgba(20, 18, 14, 0.62);
  color: #f4f0e6;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.04em;
}

.doc-card__body { padding: 0.7rem 0.8rem 0.8rem; display: flex; flex-direction: column; gap: 0.3rem; }
.doc-card__title {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  font-size: 0.86rem;
  font-weight: 500;
}
.doc-card__title small {
  font-family: var(--mono);
  font-size: 0.56rem;
  color: var(--fg-lighter);
}
.doc-card__desc {
  font-size: 0.68rem;
  line-height: 1.7;
  color: var(--fg-light);
}
.doc-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  margin-top: 0.35rem;
  font-size: 0.58rem;
  color: var(--fg-lighter);
}
.doc-card__go { color: var(--accent); font-size: 0.62rem; }
.doc-card:hover .doc-card__go { text-decoration: underline; }

/* -------------------------------- 页脚 -------------------------------- */
.foot {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 0.9rem 0 1.6rem;
  font-size: 0.6rem;
  line-height: 1.9;
  color: var(--fg-lighter);
}
.foot a { color: var(--fg-light); text-decoration: underline; text-underline-offset: 0.1em; }
.foot p { margin: 0 0 0.2rem; }

@media screen and (max-width: 700px) {
  html { font-size: 116%; }
  .hero { padding: 1.8rem 0 1.2rem; }
  .hero h1 { font-size: 1.9rem; }
  .cards { grid-template-columns: 1fr; }
}