/* 小篱笆放映室 · 站点样式
   全部系统字体 + 零外部请求：不加载任何 CDN、字体、统计脚本。 */

:root {
  --sky-1: #68B6D6;
  --sky-2: #A0D4E4;
  --sky-soft: #EAF6FA;
  --coral: #F46444;
  --coral-deep: #C43A20;
  --grass: #4C8E3A;
  --ink: #1F2933;
  --ink-2: #47566A;
  --muted: #6C7C8C;
  --line: #DCE8EF;
  --card: #FFFFFF;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(31, 41, 51, .04), 0 8px 24px rgba(104, 182, 214, .12);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; background: var(--sky-soft); }

body {
  margin: 0;
  min-height: 100vh;
  padding: 0 20px 72px;
  background:
    radial-gradient(1200px 420px at 50% -180px, var(--sky-2), transparent 70%),
    linear-gradient(180deg, var(--sky-soft), #FBFDFE 320px);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 760px; margin: 0 auto; }

/* ---------- 顶栏 ---------- */

header.site {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 28px 4px 20px;
}

header.site .mark { flex: 0 0 auto; width: 44px; height: 44px; }

header.site .brand {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .01em;
}

header.site .brand small {
  display: block;
  font-size: 12.5px;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0;
  margin-top: 1px;
}

header.site nav { margin-left: auto; display: flex; gap: 6px; }

header.site nav a {
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
}

header.site nav a:hover { background: #fff; border-color: var(--line); }

header.site nav a[aria-current="page"] {
  background: #fff;
  border-color: var(--line);
  color: var(--ink);
  font-weight: 500;
}

/* ---------- 卡片 ---------- */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 30px;
  margin: 0 0 20px;
}

.card.tight { padding: 22px 24px; }

h1 {
  font-size: 30px;
  line-height: 1.35;
  margin: 6px 0 10px;
  letter-spacing: -.01em;
}

h2 {
  font-size: 19px;
  margin: 34px 0 10px;
  letter-spacing: -.005em;
}

h3 { font-size: 16px; margin: 22px 0 6px; }

p { margin: 10px 0; color: var(--ink-2); }

.lead { font-size: 17px; color: var(--ink-2); margin-top: 0; }

.meta { font-size: 13.5px; color: var(--muted); margin: 0 0 4px; }

a { color: var(--coral-deep); text-decoration-color: rgba(196, 58, 32, .3); }

a:hover { text-decoration-color: currentColor; }

ul, ol { color: var(--ink-2); padding-left: 22px; margin: 10px 0; }

li { margin: 6px 0; }

strong { color: var(--ink); font-weight: 600; }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 28px 0;
}

/* ---------- 说明块 ---------- */

.callout {
  background: var(--sky-soft);
  border: 1px solid #D3E9F2;
  border-radius: 14px;
  padding: 16px 18px;
  margin: 18px 0;
  color: var(--ink-2);
  font-size: 15px;
}

.callout strong { color: var(--coral-deep); }

/* ---------- 联系方式 ---------- */

.contact {
  display: flex;
  gap: 26px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.contact .rows { flex: 1 1 260px; min-width: 240px; }

.row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.row:last-child { border-bottom: 0; }

.row .k { color: var(--muted); font-size: 14px; flex: 0 0 52px; }

.row .v { font-weight: 600; word-break: break-all; }

.row .v a { text-decoration: none; }

.qr { flex: 0 0 auto; text-align: center; }

.qr img {
  display: block;
  width: 168px;
  height: 168px;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.qr figcaption {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 8px;
  max-width: 168px;
}

/* ---------- 表格 ---------- */

.table-wrap { overflow-x: auto; margin: 16px 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 460px;
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--ink-2);
}

th {
  font-weight: 600;
  color: var(--ink);
  background: #F6FAFC;
  white-space: nowrap;
}

td:first-child { color: var(--ink); }

/* ---------- FAQ ---------- */

details {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0 18px;
  margin: 10px 0;
  background: #fff;
  transition: background .15s ease;
}

details[open] { background: #FCFEFF; }

summary {
  cursor: pointer;
  padding: 14px 0;
  font-weight: 600;
  font-size: 15.5px;
  list-style: none;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
}

summary::-webkit-details-marker { display: none; }

summary::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--coral);
  border-bottom: 2px solid var(--coral);
  transform: rotate(-45deg);
  transition: transform .18s ease;
  margin-left: 2px;
}

details[open] summary::before { transform: rotate(45deg); }

details .body { padding: 0 0 16px 20px; font-size: 15px; }

details .body p:first-child { margin-top: 0; }

details .body p:last-child { margin-bottom: 0; }

/* ---------- 底部 ---------- */

footer.site {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

footer.site a { color: var(--muted); }

/* ---------- 深色 ---------- */

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #E8EEF3;
    --ink-2: #B9C6D2;
    --muted: #8B9AA8;
    --line: #26333D;
    --card: #17212A;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px rgba(0, 0, 0, .28);
  }

  body {
    background:
      radial-gradient(1000px 380px at 50% -180px, #1E3A47, transparent 70%),
      linear-gradient(180deg, #101A21, #0C1419 320px);
  }

  th { background: #1D2933; }
  table { color: var(--ink-2); }
  .callout { background: #14232B; border-color: #22333D; }
  details[open] { background: #182430; }
  header.site nav a[aria-current="page"] { background: #1B2833; }
  header.site nav a:hover { background: #1B2833; }
}

@media (max-width: 560px) {
  body { padding: 0 14px 56px; font-size: 15.5px; }
  .card { padding: 22px 20px; border-radius: 16px; }
  h1 { font-size: 25px; }
  h2 { font-size: 17.5px; }
  header.site { padding: 20px 2px 14px; }
  header.site nav a { padding: 5px 10px; font-size: 13px; }
  .qr { margin: 0 auto; }
  .contact { gap: 18px; }
}