/* 100i.net — docs/DESIGN.md の実装。値を変えるときは先に DESIGN.md を直す。
   webフォントを読まない（中国本土から Google Fonts が到達しない）。
   影を使わない（掲示板は平面）。動くのは数字と順位だけ。 */

:root {
  --ink: #0A0C12;
  --panel: #12151D;
  --panel-hi: #191D27;
  --seam: #232838;
  --seam-hi: #39405A;
  --bone: #EEEAE0;
  --bone-dim: #9AA0AE;
  --bone-faint: #5D6472;
  --volt: #4A6BFF;
  --volt-soft: rgba(74, 107, 255, .14);
  --up: #3FCF8E;
  --down: #F2545B;
  --live: #FF3B5C;

  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
          "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", Meiryo,
          "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
          "DejaVu Sans Mono", "Liberation Mono", monospace;

  --maxw: 1240px;
  --pad: 32px;
  --lh: 1.75;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--sans);
  font-size: 15px;
  line-height: var(--lh);
}

html[lang="ja"] body, html[lang="zh-Hans"] body { --lh: 1.85; }

a { color: var(--bone); text-decoration: none; }
a:hover { color: #fff; }
a:focus-visible, button:focus-visible, input:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--seam-hi);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--bone-faint);
  text-transform: uppercase;
}
html[lang="ja"] .label, html[lang="zh-Hans"] .label { text-transform: none; letter-spacing: .08em; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ── header ─────────────────────────────────────────── */
.site-head {
  position: sticky; top: 0; z-index: 20;
  height: 60px;
  background: rgba(10, 12, 18, .88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--seam);
}
.site-head .wrap { height: 100%; display: flex; align-items: center; gap: 28px; }
.logo { display: flex; align-items: baseline; gap: 1px; font-weight: 700; font-size: 22px; }
.logo b { font-family: var(--mono); letter-spacing: -.04em; font-weight: 700; }
.logo i { font-style: normal; color: var(--volt); display: inline-block; transform: skewX(-8deg); }
.site-nav { display: flex; gap: 24px; }
.site-nav a { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; color: var(--bone-dim); padding-bottom: 4px; }
.site-nav a:hover { color: var(--bone); }
.site-nav a[aria-current="page"] { color: var(--bone); border-bottom: 2px solid var(--volt); }
html[lang="ja"] .site-nav a, html[lang="zh-Hans"] .site-nav a { letter-spacing: .06em; font-size: 12px; }
.head-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }

.finder { position: relative; }
.finder input {
  width: 300px; height: 34px;
  background: var(--panel); color: var(--bone);
  border: 1px solid var(--seam); border-radius: 6px;
  padding: 0 12px 0 32px; font: inherit; font-size: 13px;
}
.finder input::placeholder { color: var(--bone-faint); }
.finder svg { position: absolute; left: 10px; top: 10px; }
.finder-hits {
  position: absolute; top: 40px; left: 0; right: 0; z-index: 30;
  background: var(--panel); border: 1px solid var(--seam-hi); border-radius: 6px;
  max-height: 340px; overflow-y: auto;
}
.finder-hits:empty { display: none; }
.finder-hits a { display: flex; gap: 10px; align-items: center; padding: 9px 12px; border-bottom: 1px solid var(--seam); }
.finder-hits a:last-child { border-bottom: 0; }
.finder-hits a:hover, .finder-hits a.on { background: var(--panel-hi); }
.finder-hits .ch { font-family: var(--mono); font-size: 12px; color: var(--bone-dim); min-width: 54px; }

.lang { position: relative; }
.lang summary {
  list-style: none; cursor: pointer;
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; color: var(--bone-dim);
}
.lang summary::-webkit-details-marker { display: none; }
.lang ul {
  position: absolute; right: 0; top: 26px; z-index: 30; margin: 0; padding: 6px 0;
  list-style: none; background: var(--panel); border: 1px solid var(--seam-hi); border-radius: 6px;
  min-width: 140px;
}
.lang li a { display: block; padding: 7px 14px; font-size: 13px; white-space: nowrap; }
.lang li a:hover { background: var(--panel-hi); }

/* ── chart bar ──────────────────────────────────────── */
.chart-bar { padding: 24px 0 14px; display: flex; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.chart-bar h1 { margin: 6px 0 0; font-size: 27px; font-weight: 700; letter-spacing: -.02em; text-wrap: pretty; }
.chart-bar p { margin: 6px 0 0; color: var(--bone-dim); font-size: 14px; }
.bar-right { margin-left: auto; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.updated { font-family: var(--mono); font-size: 11px; color: var(--bone-faint); }

.periods { display: flex; gap: 2px; padding: 2px; background: var(--panel); border: 1px solid var(--seam); border-radius: 6px; }
.periods button {
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em;
  padding: 7px 14px; border: 0; border-radius: 4px; background: transparent;
  color: var(--bone-dim); cursor: pointer;
}
.periods button[aria-pressed="true"] { background: var(--volt); color: #fff; }

.provisional {
  margin: 0 0 10px; padding: 10px 14px;
  border: 1px solid var(--seam); border-left: 2px solid var(--volt); border-radius: 6px;
  background: var(--panel); color: var(--bone-dim); font-size: 13px;
}

/* ── board rows ─────────────────────────────────────── */
.board-head, .row {
  display: grid;
  grid-template-columns: 72px 44px 76px 104px minmax(0, 1fr) 100px 120px;
  gap: 16px; align-items: center;
}
.board-head { padding-bottom: 8px; border-bottom: 1px solid var(--seam); }
.board-head span { font-family: var(--mono); font-size: 10px; letter-spacing: .16em; color: var(--bone-faint); }
.board-head .r { text-align: right; }

ol.board { list-style: none; margin: 0; padding: 0; }
.row { height: 84px; border-bottom: 1px solid var(--seam); transition: background 120ms; }
.row:hover { background: var(--panel-hi); }
.row .rank { font-size: 26px; font-weight: 700; }
/* 集計前 = まだ誰も勝ち取っていない番号。並び順であることを色で言う */
.board.is-provisional .row .rank { color: var(--bone-faint); }
.board.is-provisional .row:first-child .rank { color: var(--bone-faint); }
.row:first-child .rank { font-size: 34px; color: var(--volt); }
.row .delta { font-size: 13px; }
.delta.up { color: var(--up); } .delta.down { color: var(--down); }
.delta.new { color: var(--volt); } .delta.flat { color: var(--bone-faint); }
.row .chno { font-family: var(--mono); font-size: 13px; letter-spacing: .1em; color: var(--bone-dim); }

.thumb {
  position: relative;
  width: 104px; height: 58px; border-radius: 4px; overflow: hidden;
  background: var(--panel-hi); border: 1px solid var(--seam); flex: 0 0 auto;
}
.thumb img { position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover; display: block; }
/* サムネが出ない環境（中国・死んだ画像・埋め込み不可）でも成立させる＝掲示板のフラップ。
   画像の「下」に敷く。横に並べると枠から溢れる（2026-08-22 実描画で確認） */
.thumb .fallback {
  position: absolute; inset: 0; z-index: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 20px; font-weight: 700; color: var(--seam-hi);
}

.row .who { min-width: 0; display: flex; flex-direction: column; gap: 5px; }
.row .name { font-size: 17px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row .sub { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--bone-faint); min-width: 0; }
.row .sub span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row .genre { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--bone-dim); }
.row .viewers { text-align: right; display: flex; flex-direction: column; gap: 3px; }
.row .viewers b { font-weight: 400; font-size: 16px; }
.row .viewers small { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; color: var(--bone-faint); }

.badge-live { display: inline-flex; align-items: center; gap: 5px; flex: 0 0 auto; }
.badge-live i {
  width: 6px; height: 6px; border-radius: 50%; background: var(--live);
  animation: breathe 1.5s ease-in-out infinite;
}
.badge-live b { font-family: var(--mono); font-size: 10px; letter-spacing: .16em; color: var(--live); font-weight: 400; }
@keyframes breathe { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }

.more {
  display: block; width: 100%; margin: 18px 0 0; padding: 13px;
  background: var(--panel); color: var(--bone-dim);
  border: 1px solid var(--seam); border-radius: 6px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .14em; cursor: pointer;
}
.more:hover { background: var(--panel-hi); color: var(--bone); }

/* ── genre chips ────────────────────────────────────── */
.chips { display: flex; flex-wrap: wrap; gap: 10px; padding: 28px 0 0; }
.chips a {
  border: 1px solid var(--seam); border-radius: 6px; padding: 8px 14px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--bone-dim);
}
.chips a:hover { border-color: var(--seam-hi); color: var(--bone); }

/* ── grid cards (channels / genre) ──────────────────── */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 20px; padding: 8px 0 0; list-style: none; margin: 0; }
.card { border: 1px solid var(--seam); border-radius: 6px; background: var(--panel); overflow: hidden; display: flex; flex-direction: column; }
.card:hover { background: var(--panel-hi); }
.card .shot { position: relative; aspect-ratio: 16 / 9; background: var(--panel-hi); border-bottom: 1px solid var(--seam); }
.card .shot img { position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover; display: block; }
.card .shot .fallback {
  position: absolute; inset: 0; z-index: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 30px; font-weight: 700; color: var(--seam-hi);
}
.card .meta { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 7px; }
.card .name { font-size: 15px; font-weight: 600; }
.card .line { display: flex; align-items: center; gap: 8px; }

/* ── channel page ───────────────────────────────────── */
.crumbs { padding: 20px 0 0; font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--bone-faint); }
.crumbs a { color: var(--bone-dim); }
.ch-head { padding: 12px 0 20px; display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.ch-head .chno { font-family: var(--mono); font-size: 15px; letter-spacing: .12em; color: var(--volt); }
.ch-head h1 { margin: 0; font-size: 34px; font-weight: 700; letter-spacing: -.025em; }

.player { position: relative; aspect-ratio: 16 / 9; background: var(--panel); border: 1px solid var(--seam); border-radius: 6px; overflow: hidden; }
.player iframe { width: 100%; height: 100%; border: 0; display: block; }
.player .poster { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; border: 0; background: var(--panel-hi); cursor: pointer; display: flex; align-items: center; justify-content: center; }
/* 埋め込みが許可されていないチャンネル。再生できるふりをしない */
.player.is-link .poster .disc { border-color: var(--seam-hi); }
.player.is-link { border-style: dashed; }
.player .poster img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .55; }
/* YouTube の maxresdefault は縦動画をぼかしで左右パディングして作られる。
   その中の文字と再生ボタンが喧嘩するので、上に薄い幕を1枚かける */
.player .poster::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(10, 12, 18, .30), rgba(10, 12, 18, .62));
}
.player .poster .play {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--bone);
}
.player .poster .disc {
  width: 68px; height: 68px; border-radius: 50%; border: 1px solid var(--seam-hi);
  background: rgba(10, 12, 18, .88); display: flex; align-items: center; justify-content: center;
}
.player .poster .play b {
  font-family: var(--mono); font-size: 11px; letter-spacing: .18em; font-weight: 400;
  /* サムネ自身の文字と重なるので、ラベルは自前の地を持つ */
  background: rgba(10, 12, 18, .86); padding: 5px 12px; border-radius: 4px;
}
.player-note { margin: 10px 0 0; font-size: 12px; color: var(--bone-faint); }

.rank-block {
  margin: 26px 0 0; border: 1px solid var(--seam); border-radius: 6px; background: var(--panel);
  display: grid; grid-template-columns: 200px repeat(4, minmax(0, 1fr)); align-items: stretch;
}
.rank-block .now { padding: 20px 22px; border-right: 1px solid var(--seam); display: flex; flex-direction: column; gap: 4px; }
.rank-block .now b { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 56px; line-height: 1; font-weight: 700; letter-spacing: -.04em; color: var(--volt); }
.rank-block .cell { padding: 20px 18px; border-right: 1px solid var(--seam); display: flex; flex-direction: column; gap: 5px; }
.rank-block .cell:last-child { border-right: 0; }
.rank-block .cell b { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 22px; font-weight: 400; }

.ch-desc { margin: 24px 0 0; max-width: 680px; color: var(--bone); }
.official {
  display: inline-flex; align-items: center; gap: 10px; margin: 18px 0 0;
  border: 1px solid var(--seam-hi); border-radius: 6px; padding: 11px 18px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--bone);
}
.official:hover { background: var(--panel-hi); }
.official-note { margin: 10px 0 0; font-size: 12px; color: var(--bone-faint); }

.nearby { margin: 44px 0 0; }
.nearby h2 { font-size: 15px; font-weight: 600; margin: 0 0 14px; }
.prevnext { display: flex; gap: 12px; margin: 28px 0 0; }
.prevnext a { flex: 1 1 0; border: 1px solid var(--seam); border-radius: 6px; padding: 14px 16px; display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.prevnext a:hover { background: var(--panel-hi); }
.prevnext .name { font-size: 15px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── prose pages ────────────────────────────────────── */
.prose { max-width: 680px; padding: 28px 0 0; }
.prose h1 { font-size: 34px; letter-spacing: -.025em; margin: 0 0 22px; }
.prose h2 { font-size: 18px; margin: 40px 0 12px; }
.prose p, .prose li { color: var(--bone); }
.prose ul { padding-left: 20px; }
.prose li { margin: 8px 0; }
.prose strong { font-weight: 600; }
.prose .muted { color: var(--bone-dim); }

/* ── footer ─────────────────────────────────────────── */
.site-foot { margin: 76px 0 0; border-top: 1px solid var(--seam); padding: 30px 0 56px; }
.site-foot .wrap { display: flex; gap: 28px; flex-wrap: wrap; align-items: flex-start; }
.site-foot a { color: var(--bone-dim); font-size: 13px; }
.site-foot a:hover { color: var(--bone); }
.site-foot .rights { color: var(--bone-faint); font-size: 12px; max-width: 460px; margin: 0; }
.foot-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ── language suggestion ────────────────────────────── */
.lang-hint {
  display: none; align-items: center; gap: 14px;
  border: 1px solid var(--seam-hi); border-radius: 6px; background: var(--panel);
  padding: 11px 16px; margin: 14px 0 0; font-size: 13px;
}
.lang-hint.on { display: flex; }
.lang-hint a { color: var(--volt); }
.lang-hint button { margin-left: auto; background: none; border: 0; color: var(--bone-faint); cursor: pointer; font: inherit; }

/* ── responsive ─────────────────────────────────────── */
@media (max-width: 1239px) {
  .board-head, .row { grid-template-columns: 62px 40px 70px 96px minmax(0, 1fr) 108px; }
  .board-head .g, .row .genre { display: none; }
}
@media (max-width: 959px) {
  :root { --pad: 20px; }
  .rank-block { grid-template-columns: 1fr 1fr; }
  .rank-block .now { grid-column: 1 / -1; border-right: 0; border-bottom: 1px solid var(--seam); }
  .rank-block .cell:nth-child(2n+1) { border-right: 1px solid var(--seam); }
  .rank-block .cell:nth-child(-n+3) { border-bottom: 1px solid var(--seam); }
}
@media (max-width: 719px) {
  :root { --pad: 16px; }
  .site-head .wrap { gap: 12px; }
  .site-nav { display: none; }
  .finder input { width: 100%; min-width: 0; }
  .head-right { flex: 1 1 auto; }
  .chart-bar { padding: 18px 0 12px; }
  .chart-bar h1 { font-size: 22px; }
  .bar-right { margin-left: 0; width: 100%; align-items: flex-start; }
  .periods { width: 100%; overflow-x: auto; }
  .board-head { display: none; }
  .row {
    height: auto; min-height: 76px; padding: 12px 0;
    grid-template-columns: 40px 84px minmax(0, 1fr);
    grid-template-areas: "rank thumb who" "rank thumb views";
    gap: 4px 12px; align-items: start;
  }
  .row .rank { grid-area: rank; font-size: 22px; align-self: center; }
  .row:first-child .rank { font-size: 26px; }
  .row .delta { display: none; }
  .row .chno { display: none; }
  .thumb { grid-area: thumb; width: 84px; height: 48px; align-self: center; }
  .row .who { grid-area: who; }
  .row .name { font-size: 16px; white-space: normal; }
  .row .viewers { grid-area: views; text-align: left; flex-direction: row; align-items: baseline; gap: 6px; }
  .ch-head h1 { font-size: 26px; }
  .rank-block .now b { font-size: 44px; }
  .prevnext { flex-direction: column; }
}
@media (max-width: 379px) {
  .row { grid-template-columns: 32px 72px minmax(0, 1fr); }
  .row .rank { font-size: 19px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0ms !important; transition-duration: 0ms !important; }
}