/* 生成物(site/guide/build_guide.py)。手で直さない。色と接続図の決まりは LP(site/lp/src/page.html)から写す */
:root {
  color-scheme: light;
  --bg: #f2eee6; --bg-grid: #e9e5dd; --panel: #fbf9f4; --line: #e0d8ca; --line2: #cfc5b4;
  --ink: #2b2522; --dim: #7a7068; --faint: #a79d91;
  --accent: #8e2a33; --accent-ink: #ffffff; --accent-bg: #f4e3e3;
  --nav-bg: rgba(242, 238, 230, .86);
  --studio: #ece7de;              /* 寄りの絵の帯の地(CG のスタジオの紙に近い色。絵が読み込まれる前に見える) */
  --film: #e6e1d8; --film-ink: #2b2522;
  --glass: #0f0e0d;               /* 有機EL のガラス */
  --c-maestro: #8e2a33; --c-node: #1f6b62; --c-duck: #b07a0a; --c-ghost: #2f5f9e; --c-ax: #7a7068;
  --glow: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(255, 253, 247, .7), transparent 70%);
  --grain: radial-gradient(rgba(90, 70, 50, .035) 1px, transparent 1.2px);
  --font: "Inter", "LINE Seed JP", "Yu Gothic UI", "Yu Gothic", "Hiragino Sans", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
  --gut: clamp(16px, 4vw, 44px);
  --maxw: 1240px;
}
.topo-svg .cable { fill: none; stroke: var(--ink); stroke-width: 2.4; stroke-linejoin: round; }
.topo-svg .midi { fill: none; stroke: var(--ink); stroke-width: .9; }
.topo-svg .flow { fill: none; stroke: var(--accent); stroke-width: 2.4; stroke-linecap: round; stroke-dasharray: .1 16; animation: flow 1.6s linear infinite; }
.topo-svg .flow.f-midi { stroke-width: 1.6; }
.topo-svg .jw { font: 600 8.5px var(--font); fill: var(--dim); letter-spacing: .06em; }
.topo-svg .jw.el { fill: var(--accent); }
.topo-svg .dot { fill: var(--ink); }
.topo-svg .bn { font: 700 11px var(--font); fill: var(--ink); letter-spacing: .06em; }
.topo-svg .g-el rect, .topo-svg .g-m .body { fill: var(--panel); stroke: var(--ink); stroke-width: 1.2; }
.topo-svg .keys { fill: none; stroke: var(--ink); stroke-width: .7; }
.topo-svg .g-m .oled { fill: var(--ink); }
.topo-svg .g-m .knob { fill: var(--bg); stroke: var(--ink); stroke-width: 1.1; }
.topo-svg .g-m .led { fill: #3f9a4a; }
@keyframes flow { to { stroke-dashoffset: -16.1; } }
/* 使い方ガイドの見た目(site/guide/build_guide.py が LP の :root の色と線画の決まりを頭に足して assets/guide.css へ書く)。
   紙と墨の1つの調子・字は LINE Seed JP(日本語)と Inter(英字)を、このガイドに出る字だけに詰めて同梱する。
   スマホで読むのが主: 1 段で上から読み、広い画面では左に目次を出す。印刷しても読める(@media print)。 */
@font-face { font-family: "LINE Seed JP"; src: url("fonts/line-seed-jp-400.woff") format("woff"); font-weight: 400; font-display: swap; }
@font-face { font-family: "LINE Seed JP"; src: url("fonts/line-seed-jp-700.woff") format("woff"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Inter"; src: url("fonts/inter-400.woff") format("woff"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Inter"; src: url("fonts/inter-700.woff") format("woff"); font-weight: 700; font-display: swap; }

* { box-sizing: border-box; }
html { background: #f2eee6; scroll-padding-top: 64px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background-color: #f2eee6; color: var(--ink);
  background-image: var(--grain); background-size: 5px 5px;
  font: 16px/1.85 var(--font); letter-spacing: .01em;
  -webkit-font-smoothing: antialiased; overflow-x: clip;
}
img, svg { max-width: 100%; }
a { color: inherit; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
table { font-size: inherit; }
.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus { left: 12px; top: 8px; z-index: 50; background: var(--panel); padding: 6px 12px; }

/* ---- 上の帯 ---- */
.nav { position: sticky; top: 0; z-index: 20; background: var(--nav-bg); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line); }
.nav .in { max-width: 1180px; margin-inline: auto; padding: 9px var(--gut); display: flex; align-items: center; gap: 10px 18px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; font-size: 13.5px; letter-spacing: .02em; color: var(--ink); }
.brand svg { width: 38px; height: 14px; color: var(--ink); flex: none; }
.gname { font-size: 12px; letter-spacing: .14em; color: var(--dim); }

/* ---- 段組み: スマホは 1 段。広い画面は左に目次 ---- */
.layout { max-width: 1180px; margin-inline: auto; padding: 0 var(--gut); display: block; }
.side { display: none; }
main { max-width: 760px; margin-inline: auto; padding: 22px 0 40px; }
@media (min-width: 1000px) {
  .layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 48px; }
  .side { display: block; position: sticky; top: 58px; align-self: start; max-height: calc(100vh - 58px); overflow: auto; padding: 26px 0 30px; }
  .pages-mob { display: none; }
  main { margin-inline: 0; padding-top: 30px; }
}
.side p.h, .pages-mob summary { font-size: 11px; letter-spacing: .22em; color: var(--dim); margin: 0 0 8px; }
.plist { list-style: none; margin: 0; padding: 0; counter-reset: pg; font-size: 14px; line-height: 1.5; }
.plist > li { counter-increment: pg; border-top: 1px solid var(--line); }
.plist > li > a { display: grid; grid-template-columns: 22px 1fr; gap: 6px; padding: 8px 2px; text-decoration: none; color: var(--ink); }
.plist > li > a::before { content: counter(pg, decimal-leading-zero); font: 600 10.5px/2 "Inter", var(--font); color: var(--faint); }
.plist > li > a[aria-current="page"] { font-weight: 700; }
.plist > li > a[aria-current="page"]::before { color: var(--accent); }
.plist ol { list-style: none; margin: -2px 0 8px 28px; padding: 0; font-size: 12.5px; }
.plist ol a { display: block; padding: 3px 0; color: var(--dim); text-decoration: none; }
.plist ol a:hover { color: var(--accent); }
.pages-mob { margin: 4px 0 18px; border: 1px solid var(--line2); border-radius: 6px; background: var(--panel); }
.pages-mob summary { cursor: pointer; padding: 10px 14px; margin: 0; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.pages-mob summary::-webkit-details-marker { display: none; }
.pages-mob summary::after { content: "+"; font: 400 18px/1 "Inter", var(--font); color: var(--ink); }
.pages-mob[open] summary::after { content: "−"; }
.pages-mob .plist { padding: 0 12px 6px; }

/* ---- 本文 ---- */
.crumb { margin: 0 0 6px; font: 600 11px/1.5 "Inter", var(--font); letter-spacing: .18em; color: var(--dim); }
h1 { font-size: clamp(26px, 6.4vw, 38px); line-height: 1.3; margin: 0 0 18px; letter-spacing: .01em; text-wrap: balance; word-break: auto-phrase; }
h2 { font-size: clamp(21px, 4.8vw, 26px); line-height: 1.4; margin: 52px 0 14px; padding-top: 18px; border-top: 2px solid var(--ink); text-wrap: balance; word-break: auto-phrase; }
h3 { font-size: 18px; line-height: 1.5; margin: 34px 0 10px; text-wrap: balance; word-break: auto-phrase; }
h2 .hl, h3 .hl { margin-left: 8px; color: var(--faint); text-decoration: none; font-weight: 400; opacity: 0; }
h2:hover .hl, h3:hover .hl, .hl:focus { opacity: 1; }
p { margin: 12px 0; }
strong { font-weight: 700; }
ul, ol { margin: 10px 0; padding-left: 1.4em; }
li { margin: 4px 0; }
li > ul, li > ol { margin: 4px 0; }
code { font: 600 .84em/1 "Inter", var(--font); letter-spacing: .03em; padding: .18em .42em .14em; border: 1px solid var(--line2); border-radius: 3px;
  background: var(--panel); white-space: nowrap; color: var(--ink); }
pre { margin: 14px 0; padding: 14px 16px; overflow-x: auto; background: var(--panel); border: 1px solid var(--line2); border-radius: 6px;
  font: 13px/1.6 ui-monospace, "Cascadia Mono", Consolas, Menlo, monospace; }
pre code { font: inherit; border: 0; padding: 0; background: none; white-space: pre; letter-spacing: 0; }
.toc { margin: 0 0 26px; padding: 12px 16px; border-left: 3px solid var(--accent); background: var(--panel); border-radius: 0 6px 6px 0; }
.toc p { margin: 0 0 4px; font-size: 11px; letter-spacing: .22em; color: var(--dim); }
.toc ol { margin: 0; padding-left: 1.3em; font-size: 14.5px; line-height: 1.6; }
.toc li { margin: 3px 0; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

/* 表: 広い画面はふつうの表、スマホは 1 行ずつの札(見出しの語を頭に出す) */
.tbl { margin: 16px 0; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; line-height: 1.65; }
th { text-align: left; font-size: 12px; letter-spacing: .08em; color: var(--dim); font-weight: 700; border-bottom: 2px solid var(--ink); padding: 6px 10px 6px 0; vertical-align: bottom; }
td { border-bottom: 1px solid var(--line2); padding: 9px 10px 9px 0; vertical-align: top; }
td:first-child { font-weight: 700; }
@media (max-width: 640px) {
  table, tbody, tr, td { display: block; width: 100%; }
  thead { display: none; }
  tr { border-top: 1px solid var(--ink); padding: 8px 0 6px; }
  td { border: 0; padding: 2px 0; }
  td:first-child { font-size: 15.5px; }
  td + td::before { content: attr(data-l); display: block; font-size: 11px; letter-spacing: .1em; color: var(--dim); font-weight: 700; margin-top: 4px; }
  td:empty { display: none; }
}

/* 絵 */
figure { margin: 22px 0; }
.oleds { display: flex; flex-wrap: wrap; gap: 18px 20px; align-items: flex-start; }
.scr { margin: 0; width: min(100%, 280px); }
.scr .glass { background: var(--glass); padding: 9px 12px 16px; border-radius: 6px; box-shadow: 0 1px 0 rgba(0,0,0,.05), 0 10px 24px -14px rgba(40,30,20,.5); }
.scr img { display: block; width: 100%; height: auto; aspect-ratio: 2 / 1; image-rendering: pixelated; image-rendering: crisp-edges; filter: sepia(.15) brightness(.97); }
figcaption { font-size: 12.5px; color: var(--dim); margin-top: 7px; line-height: 1.55; }
.fig-ports svg, .fig-topo svg { display: block; margin-inline: auto; height: auto; }
.fig-ports svg { width: 100%; max-width: 560px; }
.fig-topo .diagram { overflow-x: auto; padding: 6px 0 2px; }
.fig-topo svg { width: 100%; max-width: 760px; }
.ports-svg text { font-family: var(--font); }
.ports-svg .body { fill: var(--panel); stroke: var(--ink); stroke-width: 1.4; }
.ports-svg .win { fill: var(--ink); }
.ports-svg .knob { fill: var(--bg); stroke: var(--ink); stroke-width: 1.2; }
.ports-svg .led { fill: #3f9a4a; }
.ports-svg .port { fill: var(--ink); }
.ports-svg .ld { fill: none; stroke: var(--ink); stroke-width: 1; }
.ports-svg .pw { font-weight: 700; font-size: 12px; fill: var(--ink); letter-spacing: .04em; }
.ports-svg .ps { font-size: 10px; fill: var(--dim); letter-spacing: .06em; }
.ports-svg .wall { font-size: 10.5px; fill: var(--dim); letter-spacing: .12em; }
.ports-svg .fr { fill: none; stroke: var(--accent); stroke-width: 1.2; }

/* 困ったときの索引 */
.ix-find { display: flex; gap: 8px; align-items: center; margin: 10px 0 6px; }
.ix-find input { flex: 1; min-width: 0; font: 600 16px/1.4 "Inter", var(--font); padding: 9px 12px; border: 1px solid var(--line2); border-radius: 6px; background: var(--panel); color: var(--ink); }
.ixg { margin: 26px 0 6px; font-size: 12px; letter-spacing: .12em; color: var(--dim); font-weight: 700; border-bottom: 2px solid var(--ink); padding-bottom: 6px; }
.ix-az { display: flex; flex-wrap: wrap; gap: 4px; margin: 10px 0 14px; }
.ix-az a { font: 600 13px/1 "Inter", var(--font); padding: 7px 8px; border: 1px solid var(--line2); border-radius: 4px; text-decoration: none; min-width: 30px; text-align: center; }
.ix-e { border-top: 1px solid var(--line2); padding: 10px 0 6px; }
.ix-e h3 { margin: 0 0 4px; font-size: 16px; }
.ix-e h3 code { font-size: .95em; }
.ix-e ul { list-style: none; padding: 0; margin: 0; }
.ix-e li { margin: 6px 0; font-size: 14.5px; line-height: 1.7; }
.ix-e .m { display: inline-block; font: 700 11px/1.6 "Inter", var(--font); letter-spacing: .08em; padding: 0 7px; border-radius: 3px; color: #fff; margin-right: 6px; }
.ix-e .m.maestro { background: var(--c-maestro); } .ix-e .m.duck { background: var(--c-duck); } .ix-e .m.ghost { background: var(--c-ghost); } .ix-e .m.node { background: var(--c-node); }
.ix-e .m.all { background: var(--dim); }
.ix-e .act { display: block; color: var(--ink); }
.ix-e .act::before { content: "次にすること "; font-size: 11px; letter-spacing: .1em; color: var(--dim); font-weight: 700; }
.ix-e .more { font-size: 12.5px; margin-left: .5em; }
.ix-e .alt { color: var(--dim); font-size: 13px; }   /* 原因が 2 つ以上ある行の「または」(Node の表) */
.ix-sym li { margin: 8px 0; }

/* 前後のページ */
.pn { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 56px; padding-top: 16px; border-top: 2px solid var(--ink); }
.pn a { display: block; padding: 12px 14px; border: 1px solid var(--line2); border-radius: 6px; text-decoration: none; background: var(--panel); }
.pn a:hover { border-color: var(--ink); color: var(--ink); }
.pn span { display: block; font-size: 11px; letter-spacing: .16em; color: var(--dim); }
.pn b { display: block; font-size: 15px; margin-top: 2px; }
.pn .next { grid-column: 2; text-align: right; }
.pn .prev { grid-column: 1; }

footer { background: var(--ink); color: #a79d91; padding: 22px var(--gut) 34px; font-size: 11.5px; line-height: 1.7; }
footer .in { max-width: 1180px; margin-inline: auto; display: flex; gap: 8px 28px; flex-wrap: wrap; justify-content: space-between; }

@media (prefers-reduced-motion: reduce) { .topo-svg .flow { animation: none; display: none; } }

/* ---- 印刷: 紙の地・目次・前後の移動を外し、有機EL の絵は白黒を返して(背景の黒は刷られない)枠で囲む ---- */
@media print {
  @page { margin: 14mm 12mm; }
  html, body { background: #fff !important; background-image: none !important; font-size: 10.5pt; line-height: 1.7; }
  .nav, .side, .pages-mob, .toc, .pn, .skip, .hl, .ix-find, .ix-az { display: none !important; }
  .layout, main { display: block; max-width: none; padding: 0; margin: 0; }
  footer { background: none; color: #555; padding: 8mm 0 0; border-top: 1px solid #999; }
  a { text-decoration: none; }
  h2 { break-after: avoid; margin-top: 28px; }
  h3 { break-after: avoid; }
  figure, tr, pre, .ix-e { break-inside: avoid; }
  table, tbody, tr, td { display: revert; }
  thead { display: table-header-group; }
  td + td::before { content: none; }
  .scr .glass { background: #fff; border: 1px solid #000; box-shadow: none; padding: 4px; }
  .scr img { filter: invert(1); }
  .scr { width: 62mm; }
  .fig-ports svg { max-width: 105mm; }
  .fig-topo svg { max-width: 160mm; min-width: 0 !important; }
  .topo-svg .flow { display: none; }
  code { border-color: #999; background: none; }
  pre { white-space: pre-wrap; }
}