:root {
  --bg:        #f5f7fc;
  --surface:   #ffffff;
  --surface2:  #eef2fa;
  --border:    rgba(19, 35, 63, 0.10);
  --border2:   rgba(19, 35, 63, 0.18);
  --text:      #13233f;
  --text2:     rgba(19, 35, 63, 0.72);
  --text3:     rgba(19, 35, 63, 0.48);
  --accent:    #2e6fd9;
  --accent-bg: rgba(46, 111, 217, 0.10);
  --aurora1:   rgba(46, 111, 217, 0.16);
  --aurora2:   rgba(224, 86, 155, 0.10);
  --aurora3:   rgba(138, 92, 214, 0.12);
  --shadow:    0 6px 24px rgba(19, 35, 63, 0.08);

  --tint-preorder: #2a9d63;
  --tint-deadline: #e07a2e;
  --tint-lottery:  #d94f93;
  --tint-mto:      #8456d1;
  --tint-release:  #2e6fd9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0d1322;
    --surface:   #151d31;
    --surface2:  #1b2540;
    --border:    rgba(226, 234, 250, 0.10);
    --border2:   rgba(226, 234, 250, 0.20);
    --text:      #eef2fa;
    --text2:     rgba(238, 242, 250, 0.72);
    --text3:     rgba(238, 242, 250, 0.46);
    --accent:    #6c9cf0;
    --accent-bg: rgba(108, 156, 240, 0.14);
    --aurora1:   rgba(70, 110, 220, 0.22);
    --aurora2:   rgba(224, 86, 155, 0.10);
    --aurora3:   rgba(138, 92, 214, 0.16);
    --shadow:    0 6px 24px rgba(0, 0, 0, 0.35);

    --tint-preorder: #4cc488;
    --tint-deadline: #f29a55;
    --tint-lottery:  #f07ab4;
    --tint-mto:      #a988ec;
    --tint-release:  #6c9cf0;
  }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 70% 40% at 15% 0%, var(--aurora1) 0%, transparent 70%),
    radial-gradient(ellipse 50% 35% at 85% 5%, var(--aurora2) 0%, transparent 70%),
    radial-gradient(ellipse 60% 30% at 50% 20%, var(--aurora3) 0%, transparent 75%);
  background-repeat: no-repeat;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "PingFang SC", "PingFang TC", "Apple SD Gothic Neo", "Noto Sans JP", "Noto Sans KR",
    "Noto Sans SC", "Noto Sans TC", "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-bg);
  transition: border-color 0.15s;
}
a:hover { border-color: var(--accent); }

/* ── HEADER ── */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 16px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.site-header .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
  border-bottom: none;
}
.site-header .logo img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}
.lang-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.lang-switch button {
  font: inherit;
  font-size: 12px;
  color: var(--text2);
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 20px;
  padding: 3px 12px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.lang-switch button:hover { border-color: var(--accent); color: var(--accent); }
.lang-switch button[aria-pressed="true"] {
  color: #ffffff;
  background: var(--accent);
  border-color: var(--accent);
}

/* ── HERO ── */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 72px 40px 56px;
  display: flex;
  align-items: flex-start;
  gap: 36px;
  border-bottom: 1px solid var(--border);
}
.hero-icon {
  width: 104px;
  height: 104px;
  border-radius: 24px;
  flex-shrink: 0;
  box-shadow: 0 10px 32px rgba(46, 111, 217, 0.28), 0 0 0 1px var(--border);
}
.hero-text { flex: 1; min-width: 0; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero-tag::before {
  content: "";
  display: block;
  width: 20px;
  height: 1px;
  background: var(--accent);
}
.hero h1 {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 14px;
}
.hero-lead {
  font-size: 16px;
  color: var(--text2);
  max-width: 640px;
}
.hero-meta {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text3);
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}
.chip {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 20px;
  color: var(--c);
  background: color-mix(in srgb, var(--c) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--c) 30%, transparent);
}
.chip.preorder { --c: var(--tint-preorder); }
.chip.deadline { --c: var(--tint-deadline); }
.chip.lottery  { --c: var(--tint-lottery); }
.chip.mto      { --c: var(--tint-mto); }
.chip.release  { --c: var(--tint-release); }

/* ── LAYOUT ── */
.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px 120px;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0 64px;
  align-items: start;
}
.page.single { grid-template-columns: 1fr; max-width: 860px; }

.toc {
  position: sticky;
  top: 32px;
  padding-top: 40px;
}
.toc-label {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 12px;
}
.toc-list { list-style: none; }
.toc-list a {
  display: flex;
  gap: 10px;
  font-size: 13px;
  color: var(--text2);
  padding: 5px 0;
  border-bottom: none;
}
.toc-list a:hover { color: var(--accent); }
.toc-num {
  font-size: 10px;
  color: var(--text3);
  min-width: 16px;
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

.content { padding-top: 40px; min-width: 0; }
.intro-text {
  font-size: 15px;
  color: var(--text2);
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}

/* ── SECTION ── */
.section {
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 16px;
}
.section:last-child { border-bottom: none; }
.section-num {
  font-size: 11px;
  color: var(--text3);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}
.section h2 {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}
.section h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 24px 0 10px;
}
.section p {
  font-size: 14.5px;
  color: var(--text2);
  margin-bottom: 12px;
}
.section p:last-child { margin-bottom: 0; }
.note {
  font-size: 13px !important;
  color: var(--text3) !important;
}

.item-list {
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.item-list li {
  font-size: 14px;
  color: var(--text2);
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}
.item-list li:last-child { border-bottom: none; }
.item-list li strong { color: var(--text); font-weight: 600; }

/* ── FEATURE GRID ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 12px;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.feature-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.feature p {
  font-size: 13px !important;
  line-height: 1.7;
  margin: 0 !important;
}

/* ── FAQ ── */
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 44px 14px 20px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--accent);
}
.faq details[open] summary::after { content: "−"; }
.faq details > div {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text2);
}
.faq details > div p { margin-bottom: 8px; }

/* ── SERVICE CARDS ── */
.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}
.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  box-shadow: var(--shadow);
}
.service-card-name { font-size: 14px; font-weight: 700; color: var(--text); }
.service-card-desc { font-size: 12.5px; color: var(--text3); margin-bottom: 8px; }
.service-card a { font-size: 12.5px; }

/* ── CONTACT ── */
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  margin-top: 16px;
  box-shadow: var(--shadow);
}
.contact-row {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  flex-wrap: wrap;
}
.contact-row:first-child { padding-top: 0; }
.contact-row:last-child { border-bottom: none; padding-bottom: 0; }
.contact-key {
  font-size: 11px;
  color: var(--text3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  min-width: 80px;
}
.contact-val { color: var(--text2); overflow-wrap: anywhere; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
footer .f-logo { font-size: 13px; font-weight: 700; color: var(--text2); }
footer .f-links { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: 12px; }
footer .f-links a { border-bottom: none; }
footer .f-date { font-size: 12px; color: var(--text3); }

/* ── LANG VISIBILITY ── */
[data-l] { display: none; }
html[data-lang="ja"] [data-l="ja"],
html[data-lang="en"] [data-l="en"],
html[data-lang="zh-Hans"] [data-l="zh-Hans"],
html[data-lang="zh-Hant"] [data-l="zh-Hant"],
html[data-lang="ko"] [data-l="ko"] { display: revert; }

html[data-lang="ko"] body { word-break: keep-all; overflow-wrap: anywhere; }

/* ── RESPONSIVE ── */
@media (max-width: 720px) {
  .site-header { padding: 14px 16px; }
  .hero { padding: 40px 16px 36px; gap: 20px; flex-direction: column; }
  .hero-icon { width: 76px; height: 76px; border-radius: 18px; }
  .page, .page.single { grid-template-columns: 1fr; padding: 0 16px 80px; }
  .toc { display: none; }
  .service-grid { grid-template-columns: 1fr; }
  footer { padding: 20px 16px; flex-direction: column; align-items: flex-start; }
}