/* disco-ray site — 共通スタイル */

@import url("https://fonts.googleapis.com/css2?family=Murecho:wght@500;700;800&family=LINE+Seed+JP:wght@400;700;800&family=Dela+Gothic+One&display=swap");

:root {
  --paper: #f7f5fa;
  --ink: #17141f;
  --ink-soft: #5c566e;
  --line: #ded8ea;
  --line-strong: #c9c1d9;
  --violet: #8e5bde;
  --violet-deep: #5b2e9e;
  --live: #22c55e;
  --card: #ffffff;
  --radius: 14px;
  --font-body: "LINE Seed JP", system-ui, -apple-system, "Hiragino Sans", sans-serif;
  --font-head: "Murecho", "LINE Seed JP", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--violet-deep); text-underline-offset: 3px; }
a:hover { color: var(--violet); }
:focus-visible { outline: 2px solid var(--violet); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: 1060px; margin: 0 auto; padding: 0 24px; }

/* ヘッダー */
.site-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
}
.wordmark {
  font-family: "Dela Gothic One", sans-serif;
  font-size: 22px;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
  line-height: 1;
}
.wordmark em { font-style: normal; color: var(--violet); }
.site-nav { display: flex; gap: 18px; font-size: 14px; }
.site-nav a { color: var(--ink-soft); text-decoration: none; }
.site-nav a:hover { color: var(--ink); }

/* 見出し */
h1, h2, h3 { font-family: var(--font-head); font-weight: 800; line-height: 1.25; letter-spacing: 0.01em; }
h1 { font-size: clamp(32px, 4.6vw, 52px); margin: 0 0 18px; line-height: 1.18; }
h2 { font-size: clamp(22px, 2.6vw, 30px); margin: 0 0 12px; }
h3 { font-size: 17px; margin: 0 0 6px; }

.lede { font-size: 17px; color: var(--ink-soft); margin: 0; max-width: 34em; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--violet-deep);
  margin: 0 0 10px;
}

/* ヒーロー */
.hero { padding: 32px 0 64px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  gap: 56px;
  align-items: center;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  cursor: pointer;
  transition: transform 120ms ease, background-color 120ms ease, border-color 120ms ease;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #312a44; color: #fff; transform: translateY(-1px); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); transform: translateY(-1px); }

/* 実物見本（技術図面ふうの枠） */
.specimen {
  position: relative;
  background:
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.16) 1px, transparent 0) 0 0 / 16px 16px,
    #16121f;
  border-radius: 18px;
  padding: 26px 22px 22px;
  overflow: hidden;
}
.specimen::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 12px;
  pointer-events: none;
}
.specimen-live {
  position: absolute;
  top: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: #d6f7e2;
  background: rgba(34, 197, 94, 0.16);
  border: 1px solid rgba(34, 197, 94, 0.5);
  padding: 3px 8px;
  border-radius: 999px;
  z-index: 2;
}
.specimen-live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--live);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}
.specimen-frame { position: relative; border-radius: 10px; overflow: hidden; }
.specimen-frame img { display: block; width: 100%; height: auto; }
.specimen-note {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #9d94b4;
  position: relative;
  z-index: 2;
}

/* セクション */
.section { padding: 64px 0; border-top: 1px solid var(--line); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: 28px; }

/* 変更点の一覧 */
.changes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.change { background: var(--card); padding: 20px 22px; display: flex; gap: 16px; align-items: flex-start; }
.change-swatch { flex: 0 0 auto; width: 34px; height: 34px; border-radius: 10px; border: 1px solid rgba(0, 0, 0, 0.08); }
.change p { margin: 0; font-size: 14px; color: var(--ink-soft); }
.change strong { font-family: var(--font-head); font-size: 15px; color: var(--ink); display: block; margin-bottom: 2px; }

/* コード */
.code {
  position: relative;
  background: #16121f;
  color: #e9e3f7;
  border-radius: 12px;
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  overflow-x: auto;
}
.code .tok-dim { color: #8c82a6; }
.code .tok-str { color: #b9a4ff; }
.copy {
  position: absolute;
  top: 10px;
  right: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 7px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: #ddd5f0;
  cursor: pointer;
}
.copy:hover { background: rgba(255, 255, 255, 0.12); }
.copy[data-copied="true"] { border-color: var(--live); color: #b9f5cd; }

/* ステップ（実順序なので番号あり） */
.steps { display: grid; gap: 0; counter-reset: step; }
.step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.step:first-child { border-top: 0; }
.step-num {
  counter-increment: step;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 15px;
  color: var(--violet-deep);
  display: flex;
  align-items: center;
  gap: 8px;
}
.step-num::before { content: counter(step, decimal-leading-zero); font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); }
.step-body p { margin: 4px 0 0; color: var(--ink-soft); font-size: 14px; }
.step-body .code { margin-top: 12px; }

/* プリセット一覧 */
.presets { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; }
.preset {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  text-decoration: none;
  color: var(--ink);
  transition: border-color 120ms ease, transform 120ms ease;
}
.preset:hover { border-color: var(--violet); transform: translateY(-2px); color: var(--ink); }
.preset img { display: block; width: 100%; height: auto; aspect-ratio: 680 / 300; object-fit: cover; border-radius: 8px; margin-bottom: 10px; background: #16121f; }
.preset span { font-family: var(--font-head); font-weight: 700; font-size: 14px; }
.preset small { display: block; font-family: var(--font-mono); font-size: 11px; color: var(--ink-soft); }

/* FAQ */
.faq { display: grid; gap: 0; }
.faq details { border-top: 1px solid var(--line); padding: 14px 0; }
.faq details:first-child { border-top: 0; }
.faq summary { cursor: pointer; font-family: var(--font-head); font-weight: 700; font-size: 15px; }
.faq p { margin: 8px 0 0; color: var(--ink-soft); font-size: 14px; }

/* フッター */
.site-foot { border-top: 1px solid var(--line); padding: 32px 0 56px; color: var(--ink-soft); font-size: 13px; }
.site-foot p { margin: 0 0 6px; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .changes { grid-template-columns: minmax(0, 1fr); }
  .section { padding: 48px 0; }
  .step { grid-template-columns: 40px minmax(0, 1fr); gap: 12px; }
}