/* 外部Dayの紹介ページ（scripts/lib/external-intro.mjs）。一覧（home.css）と同じ暗い配色・書体。
   書体の参照は文書相対（/100days/ の下でも元のホストでも動く）。 */
@font-face {
  font-family: "Big Shoulders Display";
  src: url("../assets/fonts/BigShouldersDisplay-latin-wght.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face {
  font-family: "Geist Mono";
  src: url("../assets/fonts/GeistMono-latin-wght.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
:root {
  --bg: #0f0e0d;
  --bg-raised: #161412;
  --ink: #f3ede3;
  --ink-2: #cfc6b8;
  --muted: #a39a8e;
  --line: rgba(243,237,227,.10);
  --line-2: rgba(243,237,227,.18);
  --signal: #ff5a36;
  --signal-2: #ff7a5c;
  --signal-soft: rgba(255,90,54,.12);
  --display: "Big Shoulders Display", Impact, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", monospace;
  --sans: -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Noto Sans JP", sans-serif;
  --gap: 56px; /* 節と節の間。ページ全体で1つの値にする */
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.8 var(--sans);
  -webkit-font-smoothing: antialiased;
  word-break: auto-phrase;
  text-spacing-trim: trim-start;
}
a { color: var(--ink); text-underline-offset: 3px; }
p, li, dd { text-wrap: pretty; }
/* 短い箇条書きと補足は、行の長さをそろえる（2文字の語が行をまたいで割れるのも減る）。長い段落は pretty のまま */
.memo__list li, .memo__fix-text, .note { text-wrap: balance; }
a:hover { color: var(--signal-2); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
.wrap { width: min(100% - 32px, 720px); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 10; padding: 8px 14px; background: var(--ink); color: var(--bg); border-radius: 8px; }

/* ヘッダー */
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0 8px; }
.brand { font-weight: 800; font-size: 17px; letter-spacing: .02em; text-decoration: none; }
.pill { display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; border: 1px solid var(--line-2); border-radius: 12px; color: var(--ink); font-size: 15px; font-weight: 600; text-decoration: none; }
.pill:hover { border-color: var(--signal); color: var(--ink); }

/* 題名まわり */
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 36px 0 6px; font-family: var(--mono); font-size: 13px; letter-spacing: .08em; color: var(--muted); }
.eyebrow__day { font-family: var(--display); font-size: 30px; font-weight: 700; letter-spacing: .04em; color: var(--signal); line-height: 1; }
.eyebrow__tag { padding: 2px 12px; border: 1px solid var(--line-2); border-radius: 999px; font-family: var(--sans); font-size: 13px; letter-spacing: .02em; }
.title { margin: 0 0 14px; font-size: clamp(34px, 9vw, 54px); font-weight: 800; line-height: 1.2; letter-spacing: .005em; overflow-wrap: anywhere; }
.lead { max-width: 32em; margin: 0 0 28px; color: var(--ink-2); font-size: clamp(17px, 4.4vw, 20px); }
.lead__line { display: block; text-wrap: balance; }
.lead__line:first-child { color: var(--ink); }
.lead__line + .lead__line { margin-top: 1em; }

/* ボタン */
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 32px; }
.jump { margin: -18px 0 28px; font-size: 15px; }
.jump a { display: inline-flex; align-items: center; min-height: 44px; color: var(--ink-2); }
.actions .btn { flex: 1 1 200px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border: 1px solid var(--line-2); border-radius: 12px; background: var(--bg-raised); color: var(--ink); font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; }
.btn:hover { border-color: var(--signal); color: var(--ink); }
.btn--primary { border-color: var(--signal); background: var(--signal); color: #1a0a05; }
.btn--primary:hover { background: var(--signal-2); border-color: var(--signal-2); color: #1a0a05; }
.btn--small { min-height: 44px; padding: 0 18px; font-size: 15px; font-weight: 600; }
.icon { flex: none; margin-left: .5em; }
.actions--again { margin: 24px 0 0; }
.actions--again .btn { flex: 0 0 calc(50% - 6px); }

/* 画面と動画 */
.shot { margin: 0; }
.shot img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--bg-raised); }
.demo video { display: block; width: min(100%, 480px); height: auto; aspect-ratio: 1 / 1; border: 1px solid var(--line); border-radius: 12px; background: #000; object-fit: contain; }

/* 節 */
.block { margin: var(--gap) 0 0; }
.block h2 { margin: 0 0 16px; padding-left: 12px; border-left: 3px solid var(--signal); font-size: clamp(22px, 5.6vw, 28px); line-height: 1.4; }
.note { margin: 12px 0 0; color: var(--ink-2); font-size: 14px; }
.features, .memo__list, .tags, .share__list { margin: 0; padding: 0; list-style: none; }
.features, .memo__list { display: grid; gap: 10px; }
.features li, .memo__list li { position: relative; padding-left: 18px; }
.features li::before, .memo__list li::before { content: ""; position: absolute; left: 2px; top: .8em; width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.notice { padding: 20px; border: 1px solid rgba(255,90,54,.38); border-radius: 12px; background: var(--signal-soft); }
.notice h2 { margin-bottom: 10px; }
.notice p { margin: 0; }

/* 制作メモ */
.memo { margin: 0; display: grid; gap: 22px; }
.memo__row { display: grid; gap: 8px; }
.memo dt { font-size: 14px; font-weight: 700; letter-spacing: .04em; color: var(--signal-2); }
.memo dd { margin: 0; }
.memo--facts { margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--line); }
.nobr { white-space: nowrap; }
.memo__problem { display: block; }
.memo__fix { display: grid; grid-template-columns: 1.6em 1fr; margin-top: 4px; color: var(--ink-2); }
.memo__arrow { color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.tags li { font-family: var(--mono); font-size: 14px; color: var(--ink-2); }

/* 共有 */
.share__list { display: flex; flex-wrap: wrap; gap: 10px; }
.share__list li { flex: 1 1 calc(50% - 5px); }
.share__list li:has(> [hidden]) { display: none; }
.share__list .btn { width: 100%; }
.share__url { margin: 18px 0 0; }
.share__label { display: block; margin-bottom: 8px; color: var(--signal-2); font-size: 14px; font-weight: 700; letter-spacing: .04em; }
.share__url code { display: block; padding: 10px 12px; border-radius: 12px; background: var(--bg-raised); color: var(--ink-2); font-family: var(--mono); font-size: 13px; overflow-wrap: anywhere; user-select: all; }

/* フッター */
.foot { margin-top: 64px; padding: 28px 0 56px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.foot p { margin: 0; }
.foot a { display: inline-flex; align-items: center; min-height: 44px; color: var(--ink-2); }
.foot__links { display: flex; flex-direction: column; }

@media (min-width: 600px) {
  :root { --gap: 64px; }
  .share__list li { flex: 0 1 auto; }
  .foot__links { flex-flow: row wrap; gap: 0 24px; }
}
/* PCでは、動画と説明を横に並べる（動画の右に空きを残さない） */
@media (min-width: 700px) {
  .demo { display: grid; grid-template-columns: 480px 1fr; column-gap: 28px; align-items: start; }
  .demo h2 { grid-column: 1 / -1; }
  .demo .note { align-self: end; margin: 0; }
}
@media (max-width: 480px) {
  .actions--again .btn { flex-basis: 100%; }
  .actions .btn { flex-basis: 100%; }
}
@media (prefers-reduced-motion: no-preference) {
  .btn, .pill { transition: border-color .15s, background-color .15s, color .15s; }
}