/* 07 NEON RAIN 排行榜。配色和游戏一致（docs/showcase/neon.md「调色板」）。不加载网页字体：
   终端字用系统等宽字，中文用系统字体，页面只有这一个样式表。 */
:root {
  --ground: #06050e;
  --sky-top: #04030a;
  --sky-horizon: #24103e;
  --fg: #f0f4ff;
  --dim: #a9a3c8;
  --magenta: #ff2bd6;
  --cyan: #1fe8ff;
  --orange: #ff7a1a;
  --yellow: #ffe32e;
  --violet: #2a1452;
  --rain: #9adcff;
  --line: rgba(31, 232, 255, 0.35);
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { background: var(--ground); }

body {
  position: relative;
  margin: 0;
  min-height: 100vh;
  color: var(--fg);
  font: 16px/1.5 var(--sans);
  background:
    radial-gradient(120% 60% at 50% 100%, rgba(255, 43, 214, 0.10), transparent 60%),
    linear-gradient(180deg, var(--sky-top) 0%, #0d0820 55%, var(--sky-horizon) 100%);
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

/* 斜雨：两层重复渐变，慢慢往下走，铺满整页。只是装饰，减少动态效果时停住。 */
.rain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.32;
  background-image:
    repeating-linear-gradient(104deg, transparent 0 46px, rgba(154, 220, 255, 0.55) 46px 47px, transparent 47px 97px),
    repeating-linear-gradient(101deg, transparent 0 83px, rgba(154, 220, 255, 0.35) 83px 84px, transparent 84px 171px);
  background-size: 100% 220px, 100% 360px;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 20%, #000 80%, transparent 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 20%, #000 80%, transparent 100%);
  animation: rain 1.4s linear infinite;
}
@keyframes rain { to { background-position: -60px 220px, -70px 360px; } }
@media (prefers-reduced-motion: reduce) { .rain { animation: none; } }

header.top, main, footer { position: relative; z-index: 1; }

a { color: var(--cyan); }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
}

.en { color: var(--dim); }
small, .small { font-size: 0.82rem; color: var(--dim); }

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 16px 10px;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--fg); }
.sign {
  font: 800 1.35rem/0.95 var(--mono);
  letter-spacing: 0.08em;
  color: #ffe9fb;
  text-shadow: 0 0 2px #fff, 0 0 8px var(--magenta), 0 0 18px var(--magenta), 0 0 32px rgba(255, 43, 214, 0.6);
}
.brand .zh {
  font-weight: 700;
  font-size: 1.1rem;
  color: #e6fdff;
  text-shadow: 0 0 6px var(--cyan), 0 0 16px rgba(31, 232, 255, 0.6);
}
.tag {
  font: 700 0.72rem/1.15 var(--mono);
  letter-spacing: 0.12em;
  text-align: right;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  padding: 5px 8px;
  box-shadow: 0 0 10px rgba(31, 232, 255, 0.35), inset 0 0 8px rgba(31, 232, 255, 0.2);
}

main { max-width: 1080px; margin: 0 auto; padding: 18px 16px 32px; }

.eyebrow {
  margin: 0 0 4px;
  font: 600 0.74rem/1.3 var(--mono);
  letter-spacing: 0.16em;
  color: var(--magenta);
}
h1 {
  margin: 0 0 14px;
  font-size: 1.9rem;
  line-height: 1.15;
  font-weight: 800;
  text-shadow: 0 0 1px #fff, 0 0 14px rgba(31, 232, 255, 0.45);
}
h1 .en { color: var(--cyan); font: 700 0.95rem/1 var(--mono); letter-spacing: 0.12em; text-shadow: none; }
h2 { margin: 0 0 10px; font-size: 1.05rem; }
h2 .en { font: 600 0.78rem var(--mono); letter-spacing: 0.12em; }

.home { display: grid; gap: 28px; }
@media (min-width: 900px) {
  .home { grid-template-columns: minmax(0, 1fr) 300px; align-items: start; }
}

.board, .howto, .result, .submit, .error {
  background: linear-gradient(180deg, rgba(42, 20, 82, 0.55), rgba(6, 5, 14, 0.75));
  border: 1px solid rgba(255, 43, 214, 0.35);
  box-shadow: 0 0 0 1px rgba(6, 5, 14, 0.6), 0 0 24px rgba(255, 43, 214, 0.12);
  padding: 18px 16px;
}

.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 8px; }
.tab {
  flex: 0 1 auto;
  padding: 7px 12px;
  border: 1px solid var(--line);
  color: var(--fg);
  text-decoration: none;
  font-size: 0.92rem;
}
.tab .en { font: 600 0.72rem var(--mono); letter-spacing: 0.1em; }
.tab.on { border-color: var(--cyan); background: rgba(31, 232, 255, 0.12); box-shadow: 0 0 12px rgba(31, 232, 255, 0.3); }
.caption { margin: 0 0 12px; }

.rows { list-style: none; margin: 0; padding: 0; }
.row {
  display: grid;
  grid-template-columns: 2.2em minmax(0, 1fr) auto;
  grid-template-areas: "pos who pts" "pos meta meta";
  row-gap: 3px;
  column-gap: 10px;
  align-items: center;
  padding: 9px 4px;
  border-bottom: 1px solid rgba(31, 232, 255, 0.14);
}
@media (min-width: 600px) {
  .row { grid-template-columns: 2.4em minmax(0, 1fr) auto 7.5em; grid-template-areas: "pos who meta pts"; }
}
.pos { grid-area: pos; font: 700 1rem var(--mono); color: var(--dim); text-align: right; }
.who { grid-area: who; display: flex; align-items: baseline; gap: 6px; min-width: 0; }
.who b { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 700; }
.who small { font-family: var(--mono); flex: none; }
.meta { grid-area: meta; display: flex; flex-wrap: wrap; align-items: center; gap: 3px 8px; min-width: 0; }
.pts {
  grid-area: pts;
  font: 700 1.12rem var(--mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: #e6fdff;
  text-shadow: 0 0 8px rgba(31, 232, 255, 0.55);
}
.board > .rows:not(.mine) > .row:first-child .pts { color: #ffe9fb; text-shadow: 0 0 8px var(--magenta), 0 0 16px rgba(255, 43, 214, 0.5); }
.row.me { background: rgba(255, 227, 46, 0.09); box-shadow: inset 3px 0 0 var(--yellow); }
.row.me .pos { color: var(--yellow); }

.ship {
  flex: none;
  font: 700 0.66rem/1 var(--mono);
  font-style: normal;
  letter-spacing: 0.08em;
  padding: 3px 5px;
  border: 1px solid currentColor;
}
.ship.s0 { color: var(--cyan); box-shadow: 0 0 6px rgba(31, 232, 255, 0.4); }
.ship.s1 { color: var(--magenta); box-shadow: 0 0 6px rgba(255, 43, 214, 0.4); }
.ship.s2 { color: var(--orange); box-shadow: 0 0 6px rgba(255, 122, 26, 0.4); }

.reach { display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: 0 5px; min-width: 0; }
.reach b, .reach small { white-space: nowrap; }
.reach b { font: 600 0.8rem var(--mono); color: var(--fg); }
.reach small { font-size: 0.74rem; }

.more { margin-top: 2px; }
.more summary {
  cursor: pointer;
  padding: 10px 4px;
  color: var(--cyan);
  font-size: 0.92rem;
  list-style-position: inside;
}
.mine-label { margin: 14px 0 2px; }
.empty { padding: 26px 4px; text-align: center; color: var(--dim); }
.note-ties { margin: 12px 0 0; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.steps li { display: grid; grid-template-columns: 1.9em 1fr; gap: 8px; align-items: start; }
.steps b {
  font: 700 0.9rem/1.9em var(--mono);
  text-align: center;
  color: var(--magenta);
  border: 1px solid var(--magenta);
  box-shadow: 0 0 8px rgba(255, 43, 214, 0.35);
}
.steps .en { display: block; font-size: 0.82rem; }

.note { margin: 0 0 16px; padding: 10px 14px; border: 1px solid var(--line); }
.note.good { border-color: var(--cyan); color: #e6fdff; background: rgba(31, 232, 255, 0.1); box-shadow: 0 0 16px rgba(31, 232, 255, 0.25); }
.note.good b { color: var(--yellow); font-family: var(--mono); }
.note.warn { border-color: var(--orange); background: rgba(255, 122, 26, 0.1); }
.note .en { color: inherit; opacity: 0.8; }

/* 提交页 */
.result, .submit, .error { max-width: 520px; margin: 0 auto 18px; }
.result { text-align: center; }
.result .score b {
  display: block;
  font: 800 3.1rem/1.1 var(--mono);
  font-variant-numeric: tabular-nums;
  color: #ffe9fb;
  text-shadow: 0 0 2px #fff, 0 0 12px var(--magenta), 0 0 28px rgba(255, 43, 214, 0.55);
  overflow-wrap: anywhere;
}
.result .meta { justify-content: center; margin: 8px 0 14px; }
.counts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 0; }
.counts div { border: 1px solid var(--line); padding: 8px 4px; }
.counts dt { font-size: 0.78rem; color: var(--dim); }
.counts dt .en { display: block; font: 600 0.66rem var(--mono); letter-spacing: 0.1em; }
.counts dd { margin: 2px 0 0; font: 700 1.05rem var(--mono); font-variant-numeric: tabular-nums; color: var(--cyan); }

.submit { display: grid; gap: 10px; }
.submit label { font-weight: 700; }
.submit input[type="text"] {
  width: 100%;
  font: 600 1.1rem var(--sans);
  color: var(--fg);
  background: rgba(6, 5, 14, 0.85);
  border: 1px solid var(--cyan);
  padding: 11px 12px;
  border-radius: 0;
  box-shadow: inset 0 0 10px rgba(31, 232, 255, 0.15);
}
.btn {
  display: inline-block;
  font: 700 1rem var(--sans);
  text-decoration: none;
  text-align: center;
  color: var(--ground);
  background: var(--cyan);
  border: 0;
  padding: 12px 18px;
  cursor: pointer;
  box-shadow: 0 0 14px rgba(31, 232, 255, 0.55);
}
.btn .en { color: rgba(6, 5, 14, 0.7); font: 700 0.78rem var(--mono); letter-spacing: 0.1em; }
.back { text-align: center; }

.error { text-align: center; }
.error h1 { color: #ffe9fb; text-shadow: 0 0 10px var(--magenta); }

/* 最窄的手机（320 px）：收紧内边距和字距，两个榜期按钮放得下一行 */
@media (max-width: 359px) {
  .board, .howto, .result, .submit, .error { padding: 14px 12px; }
  .tab { padding: 6px 8px; }
  .tab .en, .eyebrow { letter-spacing: 0.04em; }
  .row { column-gap: 8px; }
}

footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 16px 28px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
}
.privacy { margin: 0; font-size: 0.8rem; color: var(--dim); }
.credit { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 14px; text-decoration: none; font: 600 0.74rem var(--mono); letter-spacing: 0.08em; }
.credit .by { color: var(--dim); }
.credit .url { color: var(--cyan); }