/* AeroWidget — site styles
   誌面のような静かなレイアウト。明朝の見出し + 等幅の通し番号 + ヘアライン罫。 */

:root {
  --ink:      #141518;
  --ink-2:    #191a1e;
  --ink-3:    #202127;
  --rule:     rgba(232, 226, 214, .09);
  --rule-s:   rgba(232, 226, 214, .17);
  --paper:    #e9e4da;
  --paper-2:  #a5a199;
  --paper-3:  #6d6a64;
  --gold:     #e3a94f;
  --gold-dim: #8d6c31;
  --on-gold:  #1b1408;

  /* 見出しは実物の中太 (Yu Mincho Demibold) を直接指名する。
     weight:600 だと合成ボールドになり、明朝の線が潰れてしまうため。 */
  --serif-d: "Yu Mincho Demibold", "Yu Mincho", YuMincho, "Hiragino Mincho ProN", "Songti SC", "Times New Roman", serif;
  --serif: "Yu Mincho", YuMincho, "Hiragino Mincho ProN", "Songti SC", "Times New Roman", serif;
  --sans:  "Segoe UI Variable Text", "Segoe UI", "Yu Gothic UI", "Hiragino Sans", system-ui, sans-serif;
  --mono:  "Cascadia Mono", Consolas, "SFMono-Regular", "Roboto Mono", monospace;

  --wrap: 1080px;
  --rail: 148px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
/* 本文中のリンクだけは金で示す (ナビやボタンは別扱い) */
.lede a, .body a, .item .d a, .rel li a, .caption a {
  color: var(--gold); border-bottom: 1px solid var(--gold-dim);
}
.lede a:hover, .body a:hover, .item .d a:hover, .rel li a:hover { border-bottom-color: var(--gold); }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }

/* ---------------------------------------------------------- 罫と見出し */

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

.mono {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--paper-3);
}

/* 章。左に等幅の通し番号、右に本文。 */
.chapter {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: 0 44px;
  padding: 74px 0;
  border-top: 1px solid var(--rule);
}
.chapter > .rail { position: sticky; top: 92px; align-self: start; }
.chapter > .rail .num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold-dim);
  display: block;
}
.chapter > .rail .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--paper-3);
  margin-top: 6px;
  display: block;
}

h2.head {
  font-family: var(--serif-d);
  font-weight: 400;
  font-size: clamp(23px, 3.4vw, 31px);
  line-height: 1.5;
  letter-spacing: .01em;
}
h3.sub {
  font-size: 15.5px;
  font-weight: 650;
  letter-spacing: .01em;
  margin-bottom: 5px;
}
p.body { color: var(--paper-2); max-width: 62ch; }
p.body + p.body { margin-top: 14px; }
p.body b, .body strong { color: var(--paper); font-weight: 600; }
.lede {
  font-family: var(--serif);
  font-size: clamp(16px, 2.2vw, 19px);
  line-height: 1.95;
  color: var(--paper-2);
  max-width: 40em;
}
.mt-l { margin-top: 34px; }
.mt-m { margin-top: 22px; }

/* ---------------------------------------------------------- ヘッダ */

header.site {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20, 21, 24, .88);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--rule);
}
header.site .wrap { display: flex; align-items: center; height: 62px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 22px; height: 22px; border-radius: 5px; }
.brand span {
  font-weight: 650; font-size: 14.5px; letter-spacing: .1em;
}
nav.site { margin-left: auto; display: flex; align-items: center; gap: 4px; }
nav.site a {
  font-size: 13.5px; color: var(--paper-2);
  padding: 7px 12px; border-radius: 6px;
  transition: color .13s, background .13s;
}
nav.site a:hover { color: var(--paper); background: var(--ink-3); }
nav.site a[aria-current="page"] { color: var(--gold); }
nav.site a.get {
  color: var(--paper); border: 1px solid var(--rule-s);
  margin-left: 8px;
}
nav.site a.get:hover { background: var(--gold); border-color: transparent; color: var(--on-gold); }
.menu-btn { display: none; }

/* ---------------------------------------------------------- ボタン */

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 24px; border-radius: 7px;
  font-size: 14.5px; font-weight: 650; letter-spacing: .02em;
  border: 1px solid var(--rule-s); background: transparent; color: var(--paper);
  transition: background .14s, border-color .14s, color .14s;
}
.btn:hover { background: var(--ink-3); }
.btn.primary { background: var(--gold); border-color: transparent; color: var(--on-gold); }
.btn.primary:hover { background: #eeb95f; }
.btn .arw { color: currentColor; opacity: .55; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------------------------------------------------------- 表紙 */

.cover { padding: 82px 0 20px; }
.cover .kicker {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .28em;
  text-transform: uppercase; color: var(--gold-dim);
}
.cover h1 {
  font-family: var(--serif-d);
  font-weight: 400;
  font-size: clamp(34px, 6.6vw, 62px);
  line-height: 1.34;
  letter-spacing: .015em;
  margin-top: 20px;
}
.cover h1 em { font-style: normal; color: var(--gold); }
.cover .lede { margin-top: 26px; }
.cover .btn-row { margin-top: 36px; }
.cover .fine { color: var(--paper-3); font-size: 12.5px; margin-top: 16px; letter-spacing: .01em; }

/* ---------------------------------------------------------- デスクトップの見本 */

.screen {
  position: relative; overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: 10px;
  border: 1px solid var(--rule-s);
  box-shadow: 0 34px 90px rgba(0, 0, 0, .55);
  background:
    radial-gradient(48% 62% at 16% 84%, rgba(46, 96, 214, .5), transparent 66%),
    radial-gradient(52% 58% at 84% 18%, rgba(18, 168, 160, .34), transparent 66%),
    radial-gradient(58% 66% at 72% 88%, rgba(96, 66, 186, .38), transparent 66%),
    linear-gradient(155deg, #060a15, #0a1024 55%, #071020);
  color: #fff;
}
.screen .w { position: absolute; text-shadow: 0 2px 18px rgba(0, 0, 0, .45); }
.screen .clock {
  left: 50%; top: 31%; transform: translate(-50%, -50%);
  font-size: clamp(38px, 8.6vw, 82px); font-weight: 200; letter-spacing: .05em;
  font-variant-numeric: tabular-nums;
}
.screen .date {
  left: 50%; top: 47%; transform: translateX(-50%);
  font-size: clamp(10px, 1.7vw, 15px); letter-spacing: .34em; white-space: nowrap;
  color: rgba(255, 255, 255, .86);
}
.screen .weather { left: 4%; top: 8%; font-size: clamp(14px, 2.5vw, 25px); line-height: 1.32; }
.screen .weather small { display: block; font-size: .45em; letter-spacing: .13em; opacity: .82; }
.screen .hw {
  right: 3.5%; top: 8%;
  font-family: var(--mono); font-size: clamp(7.5px, 1.3vw, 12px);
  line-height: 1.7; white-space: pre; text-align: left;
  color: rgba(255, 255, 255, .92);
}
.screen .hw i { font-style: normal; color: #ff6f76; }
.screen .note {
  right: 4%; bottom: 9%; width: clamp(104px, 21%, 184px);
  border-radius: 9px; padding: 9px 12px;
  background: rgba(12, 15, 21, .6); border: 1px solid rgba(255, 255, 255, .13);
  font-size: clamp(7px, 1.2vw, 11.5px); line-height: 1.65; color: #dfe2e8; text-shadow: none;
}
.screen .note b { display: block; font-family: var(--mono); font-size: .82em; letter-spacing: .18em; opacity: .62; margin-bottom: 4px; font-weight: 500; }
.screen .dock {
  left: 4%; bottom: 9%;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px;
  background: rgba(12, 15, 21, .58); border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 9px; padding: 10px;
}
.screen .dock s {
  display: block; text-decoration: none;
  width: clamp(15px, 2.9vw, 25px); height: clamp(15px, 2.9vw, 25px);
  border-radius: 6px; background: rgba(255, 255, 255, .15); border: 1px solid rgba(255, 255, 255, .13);
}
.screen .cal {
  left: 50%; bottom: 8%; transform: translateX(-50%);
  font-size: clamp(7.5px, 1.25vw, 11.5px); letter-spacing: .1em;
  background: rgba(8, 10, 14, .32); padding: 6px 14px; border-radius: 8px;
  color: rgba(255, 255, 255, .9); text-shadow: none;
}
.screen .cal u { text-decoration: none; display: inline-block; background: var(--gold); color: var(--on-gold); width: 1.7em; border-radius: 50%; text-align: center; font-weight: 600; }
.caption { color: var(--paper-3); font-size: 12px; margin-top: 12px; font-family: var(--mono); letter-spacing: .06em; }

/* ---------------------------------------------------------- 一覧・表 */

.list { border-top: 1px solid var(--rule); }
/* 通し番号・名前・説明を最初のベースラインで揃える。 */
.item {
  display: grid; grid-template-columns: 32px minmax(0, 1fr) 1.5fr; gap: 6px 22px;
  align-items: baseline;
  padding: 15px 2px; border-bottom: 1px solid var(--rule);
  transition: background .13s;
}
.item:hover { background: rgba(232, 226, 214, .022); }
.item .n {
  font-family: var(--mono); font-size: 11px; color: var(--paper-3);
  letter-spacing: .1em; grid-column: 1;
}
.item .t { font-weight: 600; font-size: 15px; grid-column: 2; }
.item .d { color: var(--paper-2); font-size: 13.5px; line-height: 1.75; grid-column: 3; }
.item .badge {
  font-family: var(--mono); font-size: 10px; letter-spacing: .1em;
  color: var(--gold); border: 1px solid var(--gold-dim); border-radius: 4px;
  padding: 1px 6px; margin-left: 9px; vertical-align: 1.5px;
}

/* 小見出しは日本語が入るので等幅にしない (字間が間延びするため) */
.group-title {
  font-size: 12.5px; font-weight: 650; letter-spacing: .08em;
  color: var(--gold); margin: 40px 0 12px;
}
.group-title:first-of-type { margin-top: 0; }

/* 二段組の平たいカード */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(272px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.cards > div { background: var(--ink); padding: 24px 26px; }
.cards h3 { font-size: 15px; font-weight: 650; margin-bottom: 7px; }
.cards p { color: var(--paper-2); font-size: 13.5px; }

/* 手順 */
.steps { counter-reset: s; }
.step { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--rule); }
.step:last-child { border-bottom: 0; }
.step::before {
  counter-increment: s; content: counter(s, decimal-leading-zero);
  font-family: var(--mono); font-size: 12px; color: var(--gold-dim); letter-spacing: .08em; padding-top: 3px;
}
.step p { color: var(--paper-2); font-size: 14px; max-width: 60ch; }
.step p b { color: var(--paper); font-weight: 600; }
.step p a { color: var(--gold); border-bottom: 1px solid var(--gold-dim); }

/* コード */
code, kbd {
  font-family: var(--mono); font-size: .88em;
  background: var(--ink-3); border: 1px solid var(--rule);
  border-radius: 4px; padding: 1.5px 6px; color: var(--paper);
}
kbd { letter-spacing: .04em; font-size: .84em; }
pre {
  background: var(--ink-2); border: 1px solid var(--rule);
  border-left: 2px solid var(--gold-dim);
  border-radius: 6px; padding: 15px 18px; overflow-x: auto;
  font-family: var(--mono); font-size: 13px; line-height: 1.7; color: var(--paper);
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; }

/* 図版 */
figure { margin: 0; }
figure img { border-radius: 9px; border: 1px solid var(--rule-s); width: 100%; }
figure figcaption { color: var(--paper-3); font-size: 12.5px; margin-top: 10px; }
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(286px, 1fr)); gap: 22px; }

/* 更新履歴 */
.rel { display: grid; grid-template-columns: var(--rail) minmax(0, 1fr); gap: 0 44px; padding: 40px 0; border-top: 1px solid var(--rule); }
.rel .v { font-family: var(--serif-d); font-size: 25px; color: var(--paper); letter-spacing: .02em; }
.rel .when { font-size: 12px; color: var(--paper-3); letter-spacing: .06em; margin-top: 3px; }
.rel h4 { font-size: 12.5px; font-weight: 650; letter-spacing: .08em; color: var(--gold); margin: 24px 0 8px; }
.rel h4:first-child { margin-top: 0; }
.rel ul { list-style: none; }
.rel li { color: var(--paper-2); font-size: 14px; padding-left: 19px; position: relative; margin-bottom: 5px; }
.rel li::before { content: ""; position: absolute; left: 2px; top: .78em; width: 6px; height: 1px; background: var(--rule-s); }
.rel li b { color: var(--paper); font-weight: 600; }

/* 締め */
.closer { text-align: center; padding: 90px 0 20px; border-top: 1px solid var(--rule); }
.closer h2 { font-family: var(--serif-d); font-weight: 400; font-size: clamp(24px, 4vw, 36px); line-height: 1.5; }
.closer p { color: var(--paper-2); margin-top: 16px; }
.closer .btn-row { justify-content: center; margin-top: 30px; }

footer.site {
  margin-top: 72px; padding: 30px 0 46px;
  border-top: 1px solid var(--rule);
  color: var(--paper-3); font-size: 12.5px;
}
footer.site .wrap { display: flex; gap: 10px 26px; flex-wrap: wrap; align-items: center; }
footer.site a { color: var(--paper-2); }
footer.site a:hover { color: var(--paper); }
footer.site .sp { margin-left: auto; }

/* ---------------------------------------------------------- 画面が狭いとき */

@media (max-width: 820px) {
  .chapter, .rel { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .chapter > .rail, .rel > .rail { position: static; display: flex; gap: 12px; align-items: baseline; }
  .chapter > .rail .label { margin-top: 0; }
  .item { grid-template-columns: minmax(0, 1fr); gap: 3px; }
  .item .n, .item .t, .item .d { grid-column: 1; }
  nav.site a:not(.get) { display: none; }
  nav.site.open { position: absolute; top: 62px; right: 0; left: 0; flex-direction: column; align-items: stretch;
    background: var(--ink-2); border-bottom: 1px solid var(--rule); padding: 8px 20px 14px; }
  nav.site.open a:not(.get) { display: block; padding: 11px 6px; border-bottom: 1px solid var(--rule); border-radius: 0; }
  nav.site.open a.get { margin: 12px 0 0; justify-content: center; padding: 11px; }
  .menu-btn {
    display: inline-flex; margin-left: auto; background: none; border: 1px solid var(--rule-s);
    color: var(--paper); border-radius: 6px; padding: 7px 11px; font-size: 12px; cursor: pointer;
    font-family: var(--mono); letter-spacing: .1em;
  }
  .cover { padding: 52px 0 8px; }
  .chapter { padding: 54px 0; }
}