/*
 * 27thu · 高考提分技巧速查
 * 浅色为默认，跟随系统深色（可在页头手动切换，存 localStorage）。
 */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --bg-card: #ffffff;
  --ink: #16181d;
  --ink-soft: #3d434e;
  --muted: #6b7280;
  --line: #e5e7eb;
  --line-soft: #eef0f3;
  --accent: #2f5bd7;
  --accent-soft: #eaf0ff;
  --real: #15803d;
  --real-soft: #e8f6ed;
  --mock: #b45309;
  --mock-soft: #fdf3e3;
  --unverified: #6b7280;
  --unverified-soft: #f1f2f4;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px -12px rgba(16, 24, 40, .12);
  --radius: 12px;
  --wrap: 920px;
}

html[data-theme="dark"] {
  --bg: #101216;
  --bg-soft: #16191f;
  --bg-card: #171a21;
  --ink: #eef1f6;
  --ink-soft: #c7ccd6;
  --muted: #8d95a3;
  --line: #262a33;
  --line-soft: #1e222a;
  --accent: #7aa2ff;
  --accent-soft: #1b2340;
  --real: #4ade80;
  --real-soft: #12281c;
  --mock: #fbbf24;
  --mock-soft: #2a2113;
  --unverified: #8d95a3;
  --unverified-soft: #1d2129;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -12px rgba(0, 0, 0, .6);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── 页头 ───────────────────────────────────────────────── */

.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .7rem 0;
}

.brand { display: flex; align-items: center; gap: .65rem; color: inherit; }
.brand:hover { text-decoration: none; }

.brand-mark {
  display: grid; place-items: center;
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--accent); color: #fff;
  font-weight: 800; font-size: .95rem; letter-spacing: .02em;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: .95rem; font-weight: 650; }
.brand-text small { color: var(--muted); font-size: .75rem; }

.header-nav { display: flex; align-items: center; gap: .9rem; font-size: .875rem; }
.header-nav a { color: var(--ink-soft); }

.icon-btn {
  width: 32px; height: 32px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--line); background: var(--bg-card); color: var(--ink-soft);
  font-size: .95rem; line-height: 1;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ── 首屏说明 ───────────────────────────────────────────── */

.view { padding: 2.6rem 0 3.5rem; }

.hero h1 {
  margin: 0 0 .7rem;
  font-size: clamp(1.5rem, 1.1rem + 1.7vw, 2.05rem);
  line-height: 1.3; letter-spacing: -.01em;
}

.hero p { margin: 0 0 .7rem; color: var(--ink-soft); max-width: 44em; }

.hero .warn {
  padding: .8rem 1rem; border-radius: 10px;
  background: var(--mock-soft); color: var(--mock);
  border: 1px solid color-mix(in srgb, var(--mock) 25%, transparent);
  font-size: .875rem;
}

/* ── 工具条 ─────────────────────────────────────────────── */

.toolbar {
  display: flex; flex-wrap: wrap; gap: .7rem;
  align-items: center; justify-content: space-between;
  margin: 1.8rem 0 .9rem;
}

.search {
  position: relative; flex: 1 1 16rem;
}
.search svg {
  position: absolute; left: .7rem; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; fill: var(--muted); pointer-events: none;
}
.search input {
  width: 100%; padding: .62rem .8rem .62rem 2.15rem;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--bg-card); color: var(--ink); font: inherit; font-size: .9rem;
}
.search input:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }

.filters { display: flex; gap: .4rem; flex-wrap: wrap; }

.chip {
  padding: .34rem .7rem; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--line); background: var(--bg-card);
  color: var(--ink-soft); font: inherit; font-size: .8rem; white-space: nowrap;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip[aria-pressed="true"] {
  background: var(--accent-soft); border-color: var(--accent); color: var(--accent);
  font-weight: 600;
}
.chip .n { color: var(--muted); margin-left: .25rem; font-variant-numeric: tabular-nums; }

.list-meta { color: var(--muted); font-size: .8rem; margin-bottom: .8rem; }

/* ── 卡片列表 ───────────────────────────────────────────── */

.grid { display: grid; gap: .7rem; }

.card {
  display: block; padding: 1rem 1.15rem;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-card); color: inherit; box-shadow: var(--shadow);
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-1px); }

.card-top { display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap; }

.card-no {
  font-variant-numeric: tabular-nums; font-weight: 700;
  color: var(--muted); font-size: .8rem;
}

.card-name { font-size: 1.02rem; font-weight: 640; letter-spacing: -.005em; }

.card-summary { margin: .4rem 0 .55rem; color: var(--ink-soft); font-size: .9rem; }

.card-foot {
  display: flex; gap: .8rem; flex-wrap: wrap;
  color: var(--muted); font-size: .78rem;
}

.pill {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .12rem .5rem; border-radius: 999px;
  font-size: .74rem; font-weight: 600; white-space: nowrap;
}
.pill.real { background: var(--real-soft); color: var(--real); }
.pill.mock { background: var(--mock-soft); color: var(--mock); }
.pill.unverified { background: var(--unverified-soft); color: var(--unverified); }

.empty { padding: 3rem 0; text-align: center; color: var(--ink-soft); }
.empty .muted { color: var(--muted); font-size: .875rem; }
.muted { color: var(--muted); }
.small { font-size: .8rem; }

/* ── 详情 ───────────────────────────────────────────────── */

.detail-bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap; margin-bottom: 1.4rem;
}

.ghost-btn {
  padding: .42rem .8rem; border-radius: 9px; cursor: pointer;
  border: 1px solid var(--line); background: var(--bg-card); color: var(--ink-soft);
  font: inherit; font-size: .85rem;
}
.ghost-btn:hover { border-color: var(--accent); color: var(--accent); }

.detail-links { display: flex; gap: 1rem; font-size: .82rem; }

.doc { max-width: 46rem; }
.doc.loading { color: var(--muted); }

.doc h1 {
  font-size: 1.6rem; line-height: 1.3; letter-spacing: -.01em;
  margin: 0 0 1rem; padding-bottom: .7rem; border-bottom: 1px solid var(--line);
}
.doc h2 {
  font-size: 1.12rem; margin: 2rem 0 .7rem; padding-left: .6rem;
  border-left: 3px solid var(--accent);
}
.doc h3 { font-size: 1rem; margin: 1.4rem 0 .5rem; }

.doc p, .doc li { color: var(--ink-soft); }
.doc strong { color: var(--ink); }

.doc blockquote {
  margin: 1rem 0; padding: .6rem 1rem;
  border-left: 3px solid var(--line); background: var(--bg-soft);
  border-radius: 0 8px 8px 0; color: var(--muted); font-size: .875rem;
}
.doc blockquote p { margin: .2rem 0; }

.doc code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: .875em; padding: .12em .4em; border-radius: 5px;
  background: var(--bg-soft); border: 1px solid var(--line-soft);
}

.doc pre {
  padding: .9rem 1.05rem; overflow-x: auto; border-radius: 10px;
  background: var(--bg-soft); border: 1px solid var(--line);
}
.doc pre code { padding: 0; border: 0; background: none; font-size: .84rem; line-height: 1.6; }

.doc table {
  width: 100%; border-collapse: collapse; margin: 1.1rem 0; font-size: .88rem;
  display: block; overflow-x: auto;
}
.doc th, .doc td {
  padding: .5rem .7rem; border: 1px solid var(--line); text-align: left;
}
.doc th { background: var(--bg-soft); font-weight: 640; color: var(--ink); }

.doc hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }

.doc img { max-width: 100%; border-radius: 10px; }

.doc .katex-display { overflow-x: auto; overflow-y: hidden; padding: .3rem 0; }

/* ── 页脚 ───────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.8rem 0 2.6rem; margin-top: 1rem;
  text-align: center; color: var(--muted); font-size: .84rem;
}
.site-footer p { margin: .3rem 0; }

@media (max-width: 560px) {
  .brand-text small { display: none; }
  .view { padding: 1.8rem 0 2.5rem; }
  .toolbar { flex-direction: column; align-items: stretch; }
}