:root {
  color-scheme: light;
  --ink: #111111;
  --muted: #444444;
  --paper: #f7f4dc;
  --panel: #ece9d8;
  --panel-light: #fffbe6;
  --line: #1d1d1d;
  --blue: #0a246a;
  --blue-light: #3a6ea5;
  --teal: #008080;
  --yellow: #ffff66;
  --red: #b00020;
  --white: #ffffff;
  --shadow: rgba(0, 0, 0, 0.35);
  --font: "MS PGothic", "ＭＳ Ｐゴシック", "MS P Gothic", Osaka, "Hiragino Kaku Gothic ProN", sans-serif;
  --mono: "MS Gothic", "ＭＳ ゴシック", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  background:
    linear-gradient(45deg, rgba(255, 255, 255, 0.14) 25%, transparent 25%) 0 0 / 16px 16px,
    linear-gradient(45deg, transparent 75%, rgba(0, 0, 0, 0.14) 75%) 0 0 / 16px 16px,
    var(--teal);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
}

a {
  color: #0000ee;
}

a:visited {
  color: #551a8b;
}

img {
  display: block;
  height: auto;
  max-width: 100%;
}

.site-header,
.site-footer,
.content-section,
.notice-band {
  margin-left: auto;
  margin-right: auto;
  max-width: 1040px;
}

.site-header {
  align-items: center;
  background: var(--panel);
  border-color: var(--white) #404040 #404040 var(--white);
  border-style: solid;
  border-width: 2px;
  display: flex;
  gap: 12px;
  justify-content: space-between;
  margin-top: 12px;
  padding: 8px;
}

.site-brand {
  align-items: center;
  color: var(--ink);
  display: inline-flex;
  gap: 8px;
  min-width: 0;
  text-decoration: none;
}

.site-brand:visited {
  color: var(--ink);
}

.brand-dot {
  background: var(--blue);
  border: 2px solid var(--white);
  box-shadow: 0 0 0 1px var(--line);
  display: inline-block;
  height: 18px;
  width: 18px;
}

.site-brand strong,
.site-brand small {
  display: block;
  line-height: 1.25;
}

.site-brand strong {
  font-family: var(--mono);
  font-size: 17px;
}

.site-brand small {
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.site-nav a,
.primary-link,
.secondary-link {
  background: var(--panel);
  border-color: var(--white) #404040 #404040 var(--white);
  border-style: solid;
  border-width: 2px;
  color: var(--ink);
  display: inline-flex;
  font-weight: 700;
  min-height: 32px;
  padding: 4px 10px;
  text-decoration: none;
}

.site-nav a:visited,
.primary-link:visited,
.secondary-link:visited {
  color: var(--ink);
}

.primary-link {
  background: var(--yellow);
}

.secondary-link {
  background: var(--panel-light);
}

.hero {
  align-items: end;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.42) 50%, rgba(0, 0, 0, 0.12)),
    url("/assets/levels/level4-aquarium-gallery.webp") center / cover no-repeat;
  color: var(--white);
  display: grid;
  min-height: 500px;
  margin-top: 12px;
  padding: 42px max(16px, calc((100vw - 1040px) / 2));
}

.hero-copy {
  max-width: 720px;
}

.eyebrow,
.section-label {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  margin: 0 0 8px;
}

.hero h1 {
  font-family: var(--mono);
  font-size: 56px;
  line-height: 1.02;
  margin: 0;
}

.lead {
  font-size: 19px;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.notice-band {
  background: #000000;
  border: 1px solid var(--white);
  color: var(--yellow);
  font-family: var(--mono);
  margin-top: 12px;
  padding: 8px 10px;
}

.notice-band p {
  margin: 0;
}

.content-section {
  background: var(--paper);
  border-color: var(--white) #404040 #404040 var(--white);
  border-style: solid;
  border-width: 2px;
  box-shadow: 4px 4px 0 var(--shadow);
  margin-top: 12px;
  padding: 18px;
}

.split-section,
.support-section {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
}

.content-section h2,
.legal-main h1,
.legal-main h2 {
  color: var(--blue);
  line-height: 1.25;
  margin: 0 0 10px;
}

.content-section p {
  margin: 0 0 10px;
}

.section-intro {
  max-width: 780px;
}

.image-panel {
  background: var(--panel);
  border-color: #404040 var(--white) var(--white) #404040;
  border-style: solid;
  border-width: 2px;
  margin: 0;
  padding: 6px;
}

.image-panel figcaption {
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
}

.product-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 14px;
}

.product-card {
  background: var(--panel);
  border-color: var(--white) #404040 #404040 var(--white);
  border-radius: 4px;
  border-style: solid;
  border-width: 2px;
  min-width: 0;
  padding: 12px;
}

.product-card h3,
.product-card p {
  margin: 0 0 8px;
}

.price {
  color: var(--red);
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
}

.price span {
  color: var(--muted);
  font-size: 12px;
}

.summary-list,
.commerce-table {
  margin: 0;
}

.summary-list div {
  border-top: 1px solid #b8b28f;
  display: grid;
  gap: 12px;
  grid-template-columns: 160px minmax(0, 1fr);
  padding: 10px 0;
}

.summary-list dt {
  font-weight: 700;
}

.summary-list dd {
  margin: 0;
}

.contact-mail {
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 700;
}

.legal-link-list {
  background: var(--panel);
  border-color: #404040 var(--white) var(--white) #404040;
  border-style: solid;
  border-width: 2px;
  list-style: none;
  margin: 0;
  padding: 10px;
}

.legal-link-list li + li {
  margin-top: 8px;
}

.site-footer {
  color: var(--white);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  justify-content: space-between;
  padding: 18px 8px 30px;
}

.site-footer p {
  margin: 0;
}

.legal-main {
  margin: 12px auto;
  max-width: 900px;
}

.legal-window {
  background: var(--paper);
  border-color: var(--white) #404040 #404040 var(--white);
  border-style: solid;
  border-width: 2px;
  box-shadow: 4px 4px 0 var(--shadow);
}

.window-titlebar {
  align-items: center;
  background: linear-gradient(90deg, var(--blue), var(--blue-light));
  color: var(--white);
  display: flex;
  font-family: var(--mono);
  font-size: 13px;
  justify-content: space-between;
  min-height: 24px;
  padding: 3px 6px;
}

.window-buttons {
  display: inline-flex;
  gap: 3px;
}

.window-buttons i {
  background: var(--panel);
  border-color: var(--white) #404040 #404040 var(--white);
  border-style: solid;
  border-width: 1px;
  display: block;
  height: 14px;
  width: 14px;
}

.legal-body {
  padding: 18px;
}

.legal-body p,
.legal-body li {
  margin-top: 0;
}

.commerce-table {
  border-collapse: collapse;
  width: 100%;
}

.commerce-table th,
.commerce-table td {
  border: 1px solid #8c8666;
  padding: 9px;
  text-align: left;
  vertical-align: top;
}

.commerce-table th {
  background: var(--panel);
  width: 210px;
}

.page-date {
  color: var(--muted);
  font-size: 13px;
}

.legal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

@media (max-width: 760px) {
  body {
    font-size: 14px;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    margin-left: 8px;
    margin-right: 8px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: 460px;
    padding: 28px 14px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .lead {
    font-size: 16px;
  }

  .notice-band,
  .content-section,
  .legal-main {
    margin-left: 8px;
    margin-right: 8px;
  }

  .split-section,
  .support-section,
  .product-grid,
  .summary-list div {
    grid-template-columns: 1fr;
  }

  .content-section,
  .legal-body {
    padding: 14px;
  }

  .commerce-table,
  .commerce-table tbody,
  .commerce-table tr,
  .commerce-table th,
  .commerce-table td {
    display: block;
    width: 100%;
  }

  .commerce-table tr + tr {
    margin-top: 8px;
  }

  .site-footer {
    margin-left: 8px;
    margin-right: 8px;
  }
}