:root {
  color-scheme: dark;
  --tank-abyss: #031322;
  --tank-midnight: #041A37;
  --tank-depth: #06325D;
  --tank-current: #0A6BB1;
  --tank-reef-cyan: #1AA5DD;
  --tank-aqua-glow: #57D7F8;
  --tank-glass: #B4E8F5;
  --tank-foam: #F4FBFF;
  --tank-fresh: #6BCB3C;
  --tank-moss: #215514;
  --tank-coral: #F26B21;
  --tank-shrimp: #D83A20;
  --tank-reef-purple: #8D4CC2;
  --tank-sand: #D7C384;
  --ink: var(--tank-foam);
  --muted: var(--tank-glass);
  --soft: rgba(87, 215, 248, 0.14);
  --soft-blue: rgba(10, 107, 177, 0.22);
  --line: rgba(180, 232, 245, 0.22);
  --surface: rgba(4, 26, 55, 0.82);
  --surface-strong: rgba(6, 50, 93, 0.9);
  --accent: var(--tank-aqua-glow);
  --accent-dark: var(--tank-reef-cyan);
  --aqua: var(--tank-aqua-glow);
  --warm: rgba(215, 195, 132, 0.16);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --max: 1080px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(circle at 18% -8%, rgba(87, 215, 248, 0.28), transparent 30rem),
    radial-gradient(circle at 92% 12%, rgba(141, 76, 194, 0.18), transparent 24rem),
    linear-gradient(180deg, var(--tank-abyss) 0%, var(--tank-midnight) 45%, #020b14 100%);
  line-height: 1.6;
}

a {
  color: var(--tank-aqua-glow);
}

a:hover {
  color: var(--tank-foam);
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(3, 19, 34, 0.9);
  backdrop-filter: blur(12px);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.mobile-nav-menu {
  display: none;
}

.brand {
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--tank-foam);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.brand img {
  border-radius: 8px;
  flex: 0 0 auto;
  box-shadow: 0 0 0 1px rgba(180, 232, 245, 0.34), 0 8px 24px rgba(87, 215, 248, 0.18);
}

.brand-text {
  display: none;
  white-space: nowrap;
}

.brand-text-full {
  display: inline;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
  font-size: 0.9rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
}

.nav-links a[aria-current="page"],
.nav-links a:hover {
  color: var(--tank-aqua-glow);
}

.mobile-nav-links {
  display: none;
}

.menu-icon {
  display: inline-block;
  height: 2px;
  position: relative;
  width: 20px;
  background: currentColor;
}

.menu-icon::before,
.menu-icon::after {
  content: "";
  left: 0;
  position: absolute;
  width: 20px;
  height: 2px;
  background: currentColor;
}

.menu-icon::before {
  top: -6px;
}

.menu-icon::after {
  top: 6px;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 44px 20px 56px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.9fr);
  gap: 32px;
  align-items: center;
  padding: 32px 0 40px;
}

.hero-water {
  position: relative;
}

.hero-water::after {
  content: "";
  position: absolute;
  right: 8%;
  bottom: 12px;
  width: 120px;
  height: 120px;
  border: 1px solid rgba(87, 215, 248, 0.22);
  border-radius: 50%;
  pointer-events: none;
  box-shadow: 0 0 34px rgba(87, 215, 248, 0.18);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--tank-aqua-glow);
  font-size: 0.88rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  line-height: 1.18;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(2.2rem, 6vw, 4.15rem);
  max-width: 13ch;
}

.page-title h1 {
  max-width: 780px;
}

h2 {
  font-size: 1.55rem;
  margin-top: 34px;
}

h3 {
  font-size: 1.08rem;
  margin-top: 22px;
}

p {
  margin: 0 0 16px;
}

.lead {
  font-size: 1.18rem;
  color: var(--tank-glass);
  max-width: 760px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-top: 24px;
}

.button-link,
.text-link {
  font-weight: 800;
  text-decoration: none;
}

button.button-link,
button.text-link {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.button-link {
  display: inline-block;
  background: linear-gradient(135deg, var(--tank-current), var(--tank-aqua-glow));
  color: var(--tank-abyss);
  border-radius: 8px;
  padding: 12px 16px;
  box-shadow: 0 12px 26px rgba(87, 215, 248, 0.2);
}

.button-link:hover {
  color: var(--tank-abyss);
  background: linear-gradient(135deg, var(--tank-reef-cyan), var(--tank-glass));
}

.notice {
  background: rgba(215, 195, 132, 0.14);
  border: 1px solid rgba(215, 195, 132, 0.42);
  border-radius: 8px;
  padding: 18px;
  color: var(--tank-foam);
}

.panel,
.highlight-panel,
.mini-list,
.plan-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.26), inset 0 1px 0 rgba(180, 232, 245, 0.1);
}

.highlight-panel {
  background: linear-gradient(180deg, rgba(6, 50, 93, 0.92), rgba(4, 26, 55, 0.92));
}

.section-band {
  background: linear-gradient(180deg, rgba(10, 107, 177, 0.2), rgba(4, 26, 55, 0.68));
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  margin: 24px 0;
}

.grid,
.guide-grid,
.plan-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 28px 0;
}

.guide-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.plan-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: rgba(4, 26, 55, 0.76);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
}

.card h2,
.card h3,
.plan-card h2 {
  margin-top: 0;
}

.community-hero {
  background:
    radial-gradient(circle at 86% 16%, rgba(87, 215, 248, 0.22), transparent 16rem),
    linear-gradient(135deg, rgba(10, 107, 177, 0.22), rgba(4, 26, 55, 0.68));
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 22px 54px rgba(0, 0, 0, 0.26), inset 0 1px 0 rgba(180, 232, 245, 0.12);
  margin-bottom: 28px;
  padding: 30px;
}

.community-hero h1 {
  max-width: none;
}

.community-section h2 {
  margin-top: 0;
}

.community-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 22px 0 30px;
}

.community-card {
  background:
    linear-gradient(180deg, rgba(6, 50, 93, 0.82), rgba(4, 26, 55, 0.9));
  border: 1px solid rgba(180, 232, 245, 0.28);
  border-radius: 12px;
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(180, 232, 245, 0.12);
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 18px;
  padding: 18px;
}

.community-card-media {
  align-items: center;
  aspect-ratio: 1;
  background: rgba(3, 19, 34, 0.52);
  border: 1px solid rgba(87, 215, 248, 0.26);
  border-radius: 10px;
  display: flex;
  justify-content: center;
  overflow: hidden;
}

.community-card-media img {
  display: block;
  height: 96px;
  object-fit: contain;
  width: 96px;
}

.community-card-body {
  min-width: 0;
}

.community-card-kicker {
  color: var(--tank-aqua-glow);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 7px;
  text-transform: uppercase;
}

.community-card h3 {
  margin-top: 0;
}

.community-card-action {
  align-items: center;
  background: rgba(87, 215, 248, 0.12);
  border: 1px solid rgba(87, 215, 248, 0.34);
  border-radius: 8px;
  color: var(--tank-foam);
  display: inline-flex;
  font-weight: 800;
  min-height: 42px;
  padding: 10px 13px;
  text-decoration: none;
}

.community-card-action:hover,
.community-card-action:focus-visible {
  background: rgba(87, 215, 248, 0.22);
  color: var(--tank-foam);
}

.support-boundary-card {
  margin-top: 8px;
}

.featured {
  border-color: rgba(87, 215, 248, 0.62);
  background: linear-gradient(180deg, rgba(10, 107, 177, 0.9), rgba(6, 50, 93, 0.9));
  box-shadow: 0 18px 46px rgba(87, 215, 248, 0.2);
}

.plan-card-premium {
  border-color: rgba(141, 76, 194, 0.72);
  background: linear-gradient(180deg, rgba(141, 76, 194, 0.28), rgba(4, 26, 55, 0.92));
  box-shadow: 0 18px 46px rgba(141, 76, 194, 0.18);
}

.price-note,
.release-date {
  color: var(--tank-glass);
  font-weight: 700;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.8fr);
  gap: 22px;
  align-items: start;
}

.link-list,
.guide-path,
.related-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 22px 0;
}

.guide-path {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.link-list a,
.guide-path a,
.related-links a {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  text-decoration: none;
  font-weight: 800;
}

.feature-list,
.plain-list,
.check-list {
  padding-left: 1.2rem;
  margin: 0 0 18px;
}

.feature-list li,
.plain-list li,
.check-list li {
  margin: 7px 0;
}

.pricing-table {
  width: 100%;
  max-width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  background: var(--surface);
}

.pricing-table th,
.pricing-table td {
  border: 1px solid var(--line);
  padding: 13px;
  text-align: left;
  vertical-align: top;
}

.pricing-table th {
  background: rgba(6, 50, 93, 0.92);
  color: var(--tank-foam);
}

.feature-matrix tbody th {
  width: 34%;
}

.feature-matrix {
  table-layout: fixed;
}

.feature-matrix thead th:first-child {
  width: 25%;
}

.feature-matrix thead th:not(:first-child) {
  width: 25%;
}

.plan-heading,
.plan-price,
.cell-note {
  display: block;
}

.plan-heading {
  font-weight: 900;
}

.plan-price {
  color: var(--tank-glass);
  font-size: 0.86rem;
  line-height: 1.25;
  margin-top: 4px;
}

.matrix-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 999px;
  font-size: 1.1rem;
  font-weight: 900;
  line-height: 1;
}

.matrix-mark.included {
  background: rgba(107, 203, 60, 0.18);
  color: var(--tank-fresh);
}

.matrix-mark.not-included {
  background: rgba(216, 58, 32, 0.16);
  color: var(--tank-shrimp);
}

.matrix-mark.planned {
  background: rgba(141, 76, 194, 0.2);
  color: var(--tank-glass);
}

.matrix-footnotes {
  color: var(--tank-glass);
  display: grid;
  font-size: 0.92rem;
  gap: 8px;
  list-style: none;
  padding-left: 0;
}

.matrix-footnotes li {
  align-items: center;
  display: flex;
  gap: 10px;
  margin: 0;
}

.matrix-footnotes .matrix-mark {
  flex: 0 0 auto;
}

.cell-note {
  color: var(--tank-glass);
  font-size: 0.84rem;
  line-height: 1.35;
  margin-top: 6px;
}

.support-helper {
  display: grid;
  gap: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 6px;
}

.field-wide {
  grid-column: 1 / -1;
}

.field label,
.field-label {
  color: var(--tank-glass);
  font-weight: 800;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(3, 19, 34, 0.72);
  color: var(--tank-foam);
  font: inherit;
  padding: 11px 12px;
}

.field textarea {
  min-height: 88px;
  resize: vertical;
}

.generated-message {
  min-height: 260px;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.status-text {
  color: var(--tank-glass);
  min-height: 1.4em;
}

.release-list {
  display: grid;
  gap: 16px;
}

.release-day {
  display: grid;
  gap: 16px;
}

.release-day > .release-date {
  margin-bottom: 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(4, 26, 55, 0.84), var(--tank-abyss));
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 26px 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--tank-aqua-glow);
}

@media (max-width: 920px) {
  .guide-grid,
  .guide-path {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .brand-text-full {
    display: none;
  }

  .brand-text-medium {
    display: inline;
  }

  .nav {
    align-items: center;
    flex-direction: row;
    gap: 12px;
    padding: 14px 16px;
    position: relative;
  }

  .desktop-nav-links {
    display: none;
  }

  .mobile-nav-menu {
    display: block;
    margin-left: auto;
  }

  .mobile-nav-menu summary {
    align-items: center;
    color: var(--tank-foam);
    cursor: pointer;
    display: inline-flex;
    gap: 9px;
    font-weight: 800;
    list-style: none;
    min-height: 40px;
    padding: 8px 10px;
  }

  .mobile-nav-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-nav-menu summary:focus-visible,
  .mobile-nav-links a:focus-visible {
    outline: 2px solid var(--tank-aqua-glow);
    outline-offset: 3px;
  }

  .mobile-nav-links {
    background: #031322;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.34);
    display: none;
    gap: 4px;
    max-width: calc(100vw - 32px);
    padding: 8px;
    position: absolute;
    right: 16px;
    top: calc(100% + 8px);
    width: min(220px, calc(100vw - 32px));
    z-index: 1000;
  }

  .mobile-nav-menu[open] .mobile-nav-links {
    align-items: stretch;
    display: flex;
    flex-direction: column;
  }

  .site-header:has(.mobile-nav-menu[open]) + main > .hero:first-child {
    margin-top: 304px;
  }

  .mobile-nav-links a {
    border-radius: 6px;
    color: var(--tank-glass);
    display: block;
    line-height: 1.2;
    min-height: 38px;
    padding: 10px 11px;
    text-align: left;
    text-decoration: none;
  }

  .mobile-nav-links a[aria-current="page"] {
    background: rgba(87, 215, 248, 0.12);
  }

  .hero,
  .grid,
  .guide-grid,
  .link-list,
  .guide-path,
  .community-card-grid,
  .related-links,
  .two-column,
  .plan-cards {
    grid-template-columns: 1fr;
  }

  main {
    padding-top: 28px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .community-card {
    grid-template-columns: 86px minmax(0, 1fr);
    gap: 14px;
  }

  .community-card-media img {
    height: 78px;
    width: 78px;
  }

  .pricing-table {
    background: transparent;
    border-collapse: separate;
    border-spacing: 0 12px;
  }

  .pricing-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

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

  .pricing-table tbody tr {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
  }

  .pricing-table th,
  .pricing-table td {
    border: 0;
    border-bottom: 1px solid var(--line);
  }

  .pricing-table tbody tr > :last-child {
    border-bottom: 0;
  }

  .feature-matrix tbody th {
    background: rgba(6, 50, 93, 0.92);
    color: var(--tank-foam);
    width: 100%;
  }

  .feature-matrix td::before {
    color: var(--tank-aqua-glow);
    content: "";
    display: block;
    font-size: 0.78rem;
    font-weight: 800;
    margin-bottom: 4px;
    text-transform: uppercase;
  }

  .feature-matrix td:nth-of-type(1)::before {
    content: "Starter - Free";
  }

  .feature-matrix td:nth-of-type(2)::before {
    content: "Tank! Plus Plan - $0.99/month or $9.99/year";
  }

  .feature-matrix td:nth-of-type(3)::before {
    content: "Tank! Journalist - planned";
  }
}

@media (max-width: 480px) {
  .brand-text-medium {
    display: none;
  }

  .brand-text-short {
    display: inline;
  }
}