:root {
  --bg: #f3f6fa;
  --card: #ffffff;
  --ink: #0f2341;      /* 图中标题深海军蓝 */
  --muted: #5a6b82;
  --line: #dde4ee;
  --free: #1a64d6;     /* 自由 */
  --partly: #eec333;   /* 部分自由 */
  --notfree: #c0281f;  /* 不自由 */
  --free-soft: #e6effc;
  --radius: 12px;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b1424; --card: #121e33; --ink: #e8eef8; --muted: #9aabc4; --line: #23324c; --free-soft: #16294a; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.65; -webkit-text-size-adjust: 100%; }
a { color: var(--free); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

.top { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.top__inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand__bar { width: 6px; height: 34px; border-radius: 2px; background: linear-gradient(var(--free), #0b3c8c); }
.brand strong { display: block; font-size: 18px; letter-spacing: .5px; }
.brand small { display: block; font-size: 11px; color: var(--muted); margin-top: -2px; }
.top__link { color: var(--muted); text-decoration: none; font-size: 14px; }

.hero { display: flex; gap: 18px; padding: 36px 0 20px; }
.hero__bar { flex: 0 0 10px; border-radius: 2px; background: linear-gradient(var(--free), #0b3c8c); }
.hero h1 { margin: 0; font-size: clamp(26px, 5vw, 40px); line-height: 1.2; letter-spacing: 1px; }
.hero__sub { margin: 10px 0 0; color: var(--muted); font-size: 15px; max-width: 680px; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 2px; vertical-align: 0; margin-right: 3px; }
.dot--free { background: var(--free); }

.countries { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 16px; }
.chip { border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 999px; padding: 6px 14px; font-size: 14px; cursor: pointer; display: inline-flex; gap: 6px; align-items: center; font-family: inherit; }
.chip small { color: var(--muted); font-size: 12px; }
.chip[aria-pressed="true"] { background: var(--free); border-color: var(--free); color: #fff; }
.chip[aria-pressed="true"] small { color: #d6e4fb; }

.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 14px; }
#search { display: flex; flex: 1 1 320px; max-width: 480px; }
#search input { flex: 1; min-width: 0; border: 1px solid var(--line); border-right: 0; border-radius: 8px 0 0 8px; padding: 9px 12px; font: inherit; font-size: 15px; background: var(--card); color: var(--ink); }
#search button, .more button { border: 0; background: var(--ink); color: var(--bg); padding: 0 18px; font: inherit; font-size: 14px; cursor: pointer; }
#search button { border-radius: 0 8px 8px 0; }
.status { color: var(--muted); font-size: 13px; }

.list { display: grid; gap: 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--free); border-radius: var(--radius); padding: 16px 18px; }
.card__meta { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; font-size: 13px; color: var(--muted); }
.tag { background: var(--free-soft); color: var(--free); border-radius: 4px; padding: 1px 8px; font-size: 12px; }
.tag--pending { background: #fff4d1; color: #8a6400; }
@media (prefers-color-scheme: dark) { .tag--pending { background: #3a3110; color: #f0cf6a; } }
.card h3 { margin: 8px 0 6px; font-size: 18px; line-height: 1.45; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--free); }
.card p { margin: 0; color: var(--ink); opacity: .88; font-size: 15px; }
.card details { margin-top: 10px; font-size: 13px; color: var(--muted); }
.card summary { cursor: pointer; }
.card details p { font-size: 13px; color: var(--muted); margin-top: 6px; }
.card__src { display: inline-block; margin-top: 10px; font-size: 14px; font-weight: 600; text-decoration: none; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }

.more { text-align: center; margin: 18px 0 8px; }
.more button { border-radius: 8px; padding: 10px 28px; }

.about { margin: 48px 0 24px; padding-top: 24px; border-top: 1px solid var(--line); }
.about h2 { margin: 0 0 12px; }
.about__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.about figure { margin: 0; }
.about img { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--line); display: block; }
.about figcaption { font-size: 12px; color: var(--muted); margin-top: 6px; }
.sources { padding-left: 0; list-style: none; }
.sources li { padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.sources li span { color: var(--muted); font-size: 12px; }
.note { font-size: 13px; color: var(--muted); }

.foot { border-top: 1px solid var(--line); padding: 18px 0 28px; font-size: 12px; color: var(--muted); text-align: center; }

@media (max-width: 720px) {
  .about__grid { grid-template-columns: 1fr; }
  .hero { padding-top: 24px; gap: 12px; }
  .hero__bar { flex-basis: 6px; }
  .card { padding: 14px; }
  .card h3 { font-size: 17px; }
}