/* Yuki Server 独自開発システムの紹介
   - トップページの紹介セクション (.systems-section)
   - 読み上げ / AIずんだもん 詳細ページ (.feature-page)
   既存の site.css のトークン (--ice, --toxic, --green, --muted, --line ...) を利用する。 */

/* ------------------------------------------------------------------ *
 * トップページ: 独自システム紹介セクション
 * ------------------------------------------------------------------ */
.systems-section {
  position: relative;
  overflow: hidden;
  padding: 120px 0;
  border-block: 1px solid var(--line);
  background:
    radial-gradient(circle at 84% 12%, rgba(184, 241, 75, .12), transparent 24rem),
    radial-gradient(circle at 6% 96%, rgba(126, 232, 255, .12), transparent 24rem),
    linear-gradient(150deg, #08131b, #04080c 70%);
}
.systems-section::before {
  content: "VOICE";
  position: absolute;
  right: 3vw;
  top: -3.5rem;
  color: rgba(126, 232, 255, .028);
  font-family: Impact, "Arial Black", sans-serif;
  font-size: clamp(10rem, 22vw, 24rem);
  line-height: 1;
  letter-spacing: .02em;
  pointer-events: none;
}
.systems-heading {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr .84fr;
  align-items: end;
  gap: 72px;
}
.systems-heading h2 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 1.1;
}
.systems-heading h2 span {
  color: transparent;
  -webkit-text-stroke: 1px rgba(223, 250, 255, .55);
}
.systems-heading > p {
  margin: 0 0 12px;
  color: #a4b5be;
  font-size: .92rem;
  line-height: 2;
}

.systems-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.28fr .86fr .86fr;
  gap: 12px;
  margin-top: 48px;
}
.system-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 340px;
  padding: 30px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(14, 29, 40, .82), rgba(7, 14, 20, .9));
  transition: transform .25s ease, border-color .25s ease;
}
.system-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-bright);
}
.system-card .system-index {
  color: var(--ice);
  font: 900 .68rem/1 "Arial Black", sans-serif;
  letter-spacing: .12em;
}
.system-card h3 {
  margin: 22px 0 10px;
  font-size: 1.32rem;
  letter-spacing: .02em;
}
.system-card p {
  margin: 0;
  color: var(--muted);
  font-size: .86rem;
  line-height: 1.85;
}
.system-card .system-link {
  margin-top: auto;
  padding-top: 22px;
  color: var(--ice);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .08em;
}
.system-card .system-eg {
  margin-top: auto;
  padding: 12px 14px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font: 700 .78rem/1.5 Consolas, "Yu Gothic UI", monospace;
  word-break: break-word;
}
.system-card .system-eg span { color: var(--ice); margin-right: 6px; }
.system-card--voice {
  background:
    radial-gradient(circle at 12% 0%, rgba(184, 241, 75, .16), transparent 60%),
    linear-gradient(150deg, rgba(41, 61, 28, .5), rgba(8, 18, 22, .94));
  border-color: rgba(184, 241, 75, .32);
}
.system-card--voice h3 { font-size: 1.5rem; }
.system-card--voice .system-badge {
  align-self: flex-start;
  margin-bottom: 4px;
  padding: 4px 10px;
  border: 1px solid rgba(184, 241, 75, .4);
  border-radius: 999px;
  color: var(--toxic);
  font-size: .58rem;
  font-weight: 900;
  letter-spacing: .14em;
}
.system-card--voice .system-points {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}
.system-card--voice .system-points li {
  position: relative;
  padding-left: 20px;
  color: #c6d3d9;
  font-size: .82rem;
  line-height: 1.7;
}
.system-card--voice .system-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .55em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--toxic);
  box-shadow: 0 0 10px rgba(184, 241, 75, .55);
}
.system-card--voice .system-link { color: var(--toxic); }

.systems-console {
  position: relative;
  z-index: 2;
  margin-top: 12px;
  padding: 0 30px 24px;
  border: 1px solid var(--line);
  background: rgba(1, 5, 8, .94);
  box-shadow: inset 0 0 55px rgba(126, 232, 255, .025);
}
.systems-console-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-inline: -30px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  color: var(--ice);
  font-size: .58rem;
  font-weight: 900;
  letter-spacing: .12em;
}
.systems-console-head i { color: var(--green); font-style: normal; }
.systems-console-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 24px;
}
.systems-console-grid div { display: grid; gap: 8px; align-content: start; }
.systems-console-grid span {
  color: var(--muted);
  font-size: .56rem;
  font-weight: 900;
  letter-spacing: .11em;
}
.systems-console-grid code {
  display: block;
  overflow-x: auto;
  padding: 12px 14px;
  border: 1px solid rgba(126, 232, 255, .28);
  background: rgba(126, 232, 255, .055);
  color: var(--ice-bright);
  font: 800 .82rem/1.4 Consolas, "Yu Gothic UI", monospace;
  white-space: nowrap;
}

@media (max-width: 960px) {
  .systems-section { padding: 88px 0; }
  .systems-heading { grid-template-columns: 1fr; gap: 22px; }
  .systems-grid { grid-template-columns: 1fr; }
  .system-card { min-height: 0; }
  .systems-console-grid { grid-template-columns: 1fr; }
}

/* ------------------------------------------------------------------ *
 * 詳細ページ共通
 * ------------------------------------------------------------------ */
.feature-page main { display: block; }
.feature-page .inner-hero { padding-bottom: 48px; }
.feature-page .inner-hero-grid {
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}
.feature-page .inner-hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  letter-spacing: .02em;
  line-height: 1.12;
}
.feature-page .inner-hero p:last-child {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  line-height: 1.95;
  font-size: .95rem;
}

.feature-section { padding: 68px 0; border-bottom: 1px solid var(--line); }
.feature-section:nth-of-type(even) { background: #071119; }
.feature-section > .shell > .eyebrow { margin-bottom: 12px; }
.feature-section > .shell > h2 {
  margin: 0 0 26px;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  line-height: 1.25;
}
.feature-section > .shell > p {
  max-width: 760px;
  margin: 0 0 22px;
  color: var(--muted);
  line-height: 1.95;
}
.feature-lead {
  color: var(--text) !important;
  font-size: 1.05rem;
}
.feature-section p code,
.feature-section li code,
.feature-steps code {
  padding: 2px 6px;
  border: 1px solid rgba(126, 232, 255, .24);
  border-radius: 4px;
  background: rgba(126, 232, 255, .05);
  color: var(--ice-bright);
  font: 700 .86em/1.4 Consolas, "Yu Gothic UI", monospace;
  word-break: break-all;
}

/* 手順・特徴カード */
.feature-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin: 8px 0 0;
}
.feature-steps article {
  position: relative;
  padding: 22px 22px 22px 56px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .02);
}
.feature-steps article > span {
  position: absolute;
  left: 18px;
  top: 20px;
  color: var(--ice);
  font: 900 .8rem/1 "Arial Black", sans-serif;
}
.feature-steps article strong { display: block; margin-bottom: 6px; font-size: .96rem; }
.feature-steps article p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.75; }

/* 仕様テーブル */
.feature-table-wrap { overflow-x: auto; }
.feature-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  font-size: .86rem;
}
.feature-table th,
.feature-table td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.feature-table thead th {
  background: rgba(126, 232, 255, .06);
  color: var(--ice);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.feature-table td code,
.feature-table th code { color: var(--ice-bright); font: 700 .84rem/1.4 Consolas, monospace; }
.feature-table tbody tr:nth-child(even) { background: rgba(255, 255, 255, .015); }

/* コマンド一覧 */
.feature-commands { display: grid; gap: 10px; margin-top: 4px; }
.feature-commands div {
  display: grid;
  grid-template-columns: minmax(0, 240px) 1fr;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: rgba(1, 5, 8, .6);
}
.feature-commands code {
  overflow-x: auto;
  padding: 8px 12px;
  border: 1px solid rgba(126, 232, 255, .28);
  background: rgba(126, 232, 255, .055);
  color: var(--ice-bright);
  font: 800 .84rem/1.4 Consolas, "Yu Gothic UI", monospace;
  white-space: nowrap;
}
.feature-commands p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.7; }

/* 注意ボックス */
.feature-note {
  margin: 20px 0 0;
  padding: 20px 22px;
  border: 1px solid rgba(255, 190, 85, .38);
  background: rgba(255, 190, 85, .06);
}
.feature-note strong { display: block; margin-bottom: 6px; color: var(--amber); }
.feature-note p { margin: 0; color: #d6c6ac; font-size: .86rem; line-height: 1.8; }

.feature-flow {
  margin: 8px 0 0;
  padding: 22px 24px;
  border: 1px solid var(--line);
  background: rgba(1, 5, 8, .55);
  color: #c6d3d9;
  font: 600 .82rem/2 Consolas, "Yu Gothic UI", monospace;
  white-space: pre-wrap;
  overflow-x: auto;
}

/* クレジット一覧 */
.credit-lead { margin-bottom: 18px; }
.credit-primary {
  display: inline-block;
  margin: 0 0 20px;
  padding: 10px 16px;
  border: 1px solid rgba(184, 241, 75, .4);
  background: rgba(184, 241, 75, .07);
  color: var(--toxic);
  font: 800 .92rem/1.4 Consolas, "Yu Gothic UI", monospace;
}
.credit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.credit-grid li {
  padding: 9px 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .016);
  color: #c6d3d9;
  font-size: .82rem;
}
.credit-grid li b { color: var(--ice); font-weight: 700; }

.feature-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

@media (max-width: 700px) {
  .feature-commands div { grid-template-columns: 1fr; }
}