styles.css

:root {
  color-scheme: light;
  --bg: #f6f4ef;
  --surface: #ffffff;
  --ink: #202124;
  --muted: #6a6f73;
  --line: #d9d5ca;
  --accent: #245c53;
  --accent-ink: #ffffff;
  --warning: #b04436;
  --focus: #f0b44d;
  --region-0: #f4c7ab;
  --region-1: #f0dc87;
  --region-2: #a7d8b6;
  --region-3: #93c9d5;
  --region-4: #c5b6e3;
  --region-5: #f3a7b6;
  --region-6: #bfd4a3;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
}

button,
input {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  min-height: 42px;
  padding: 0 14px;
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

button:disabled:hover {
  border-color: var(--line);
}

button:focus-visible,
input:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus), transparent 35%);
  outline-offset: 2px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 244, 239, 0.94);
  padding: 12px clamp(16px, 4vw, 48px);
  backdrop-filter: blur(10px);
}

.brand,
.nav a {
  color: var(--ink);
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 760;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.78rem;
  letter-spacing: 0;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

.nav a {
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--muted);
  font-size: 0.94rem;
}

.nav a:hover {
  background: rgba(36, 92, 83, 0.08);
  color: var(--ink);
}

.language-switcher {
  position: relative;
  flex: 0 0 auto;
}

.language-switcher summary {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 0 12px;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 760;
  cursor: pointer;
  list-style: none;
}

.language-switcher summary::-webkit-details-marker {
  display: none;
}

.language-switcher summary::after {
  content: "";
  width: 7px;
  height: 7px;
  margin-left: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.language-switcher[open] summary {
  border-color: var(--accent);
}

.language-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 20;
  display: grid;
  min-width: 160px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 6px;
  box-shadow: 0 16px 40px rgba(32, 33, 36, 0.16);
}

.language-menu a {
  border-radius: 8px;
  color: var(--ink);
  padding: 8px 10px;
  text-decoration: none;
}

.language-menu a:hover,
.language-menu a[aria-current="page"] {
  background: rgba(36, 92, 83, 0.1);
  color: var(--accent);
  font-weight: 800;
}

.games-switcher {
  margin-left: 0;
}

.games-switcher .language-menu {
  right: auto;
  left: 0;
  min-width: 210px;
}

.section-shell {
  width: calc(100% - 32px);
  max-width: 1120px;
  margin: 0 auto;
}

.play-section,
.tool-section,
.rules-section,
.seo-section,
.faq-section,
.internal-links-section {
  padding: clamp(24px, 5vw, 56px) 0;
}

.play-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 20px;
  align-items: start;
}

.game-column,
.side-panel,
.calculator-panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 16px 40px rgba(32, 33, 36, 0.08);
}

.game-column {
  padding: clamp(16px, 3vw, 28px);
}

.game-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 3px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
  line-height: 1.06;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

.lede {
  max-width: 580px;
  color: var(--muted);
}

.game-intro {
  max-width: 560px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.proof-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 560px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.proof-points li {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfaf7;
  padding: 7px 10px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 760;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(64px, 1fr));
  gap: 8px;
}

.stats div,
.metric-strip div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  text-align: center;
}

.stats span,
.metric-strip strong {
  display: block;
  font-size: 1.06rem;
  font-weight: 800;
}

.stats small,
.metric-strip span {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
}

.board-wrap {
  display: grid;
  width: 100%;
  max-width: 100%;
  place-items: center;
}

.board-stage {
  position: relative;
  width: 100%;
  max-width: 560px;
  aspect-ratio: 1;
}

.board {
  display: grid;
  width: 100%;
  max-width: none;
  aspect-ratio: 1;
  grid-template-columns: repeat(var(--board-size, 7), minmax(0, 1fr));
  border: 3px solid #2f3336;
  background: #2f3336;
  gap: 0;
  touch-action: manipulation;
}

.board-row {
  display: contents;
}

.cell {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 0;
  place-items: center;
  border: 1px solid rgba(47, 51, 54, 0.14);
  border-radius: 0;
  color: #1e2527;
  font-size: clamp(1.3rem, 5.5vw, 2.4rem);
  font-weight: 900;
  line-height: 1;
  padding: 0;
}

.cell.region-top { border-top: 2px solid #2f3336; }
.cell.region-right { border-right: 2px solid #2f3336; }
.cell.region-bottom { border-bottom: 2px solid #2f3336; }
.cell.region-left { border-left: 2px solid #2f3336; }

.board[data-profile="classic"] .cell {
  font-size: clamp(1rem, 4vw, 1.9rem);
}

.board[data-profile="expert"] .cell {
  font-size: clamp(0.82rem, 3.2vw, 1.45rem);
}

.star-mode-picker {
  margin: 0 0 16px;
}

.star-mode-buttons {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.star-mode-buttons button {
  min-width: 0;
  padding: 9px 6px;
  font-size: 0.9rem;
}

.star-mode-buttons button.active {
  border-color: var(--accent);
  background: rgba(36, 92, 83, 0.12);
  color: var(--accent);
  font-weight: 850;
}

.star-mode-picker p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.cell:disabled {
  cursor: default;
  opacity: 1;
}

.start-overlay {
  position: absolute;
  z-index: 10;
  inset: 0;
  display: grid;
  place-items: start center;
  border: 3px solid #2f3336;
  background: var(--bg);
  padding: clamp(14px, 4vw, 28px);
  cursor: pointer;
}

.start-overlay[hidden] {
  display: none;
}

.start-card {
  display: flex;
  flex-direction: column;
  width: min(100%, 360px);
  margin-top: clamp(8px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  padding: clamp(16px, 4vw, 24px);
  text-align: center;
  box-shadow: 0 18px 44px rgba(32, 33, 36, 0.16);
}

.start-card h2 {
  font-size: clamp(1.35rem, 4vw, 2.2rem);
}

.start-card p:not(.eyebrow) {
  margin: 10px 0 16px;
  color: var(--muted);
}

.start-card .primary {
  order: -1;
  width: 100%;
  margin-bottom: 12px;
}

.cell[data-region="0"] {
  background: var(--region-0);
}

.cell[data-region="1"] {
  background: var(--region-1);
}

.cell[data-region="2"] {
  background: var(--region-2);
}

.cell[data-region="3"] {
  background: var(--region-3);
}

.cell[data-region="4"] {
  background: var(--region-4);
}

.cell[data-region="5"] {
  background: var(--region-5);
}

.cell[data-region="6"] {
  background: var(--region-6);
}

.cell.blocked::after {
  content: "";
  width: 42%;
  height: 42%;
  border-radius: 50%;
  background: rgba(32, 33, 36, 0.25);
}

.cell.star {
  color: #1d2124;
}

.cell.error {
  box-shadow: inset 0 0 0 4px var(--warning);
}

.cell.hint {
  box-shadow: inset 0 0 0 4px #ffffff, inset 0 0 0 8px var(--focus);
}

.status {
  min-height: 26px;
  margin: 14px 0 0;
  color: var(--muted);
  font-weight: 650;
}

.status.success {
  color: var(--accent);
}

.status.error {
  color: var(--warning);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.side-panel {
  padding: 18px;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.share-preview {
  min-height: 116px;
  margin: 16px 0;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: #fbfaf7;
  padding: 14px;
  color: var(--muted);
  overflow-wrap: anywhere;
  white-space: pre-line;
}

.quick-rules {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 0 0 16px;
  padding: 14px 0;
}

.quick-rules h2 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.quick-rules ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 20px;
  color: var(--ink);
}

.quick-rules p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.mini-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.tool-section {
  background: #eef3f0;
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: 28px;
  align-items: start;
}

.calculator-panel {
  padding: clamp(16px, 3vw, 24px);
}

.combo-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.combo-form label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-weight: 720;
}

.combo-form input[type="number"] {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  color: var(--ink);
}

.check-label {
  grid-column: 1 / -1;
  display: flex !important;
  grid-template-columns: none !important;
  align-items: center;
  gap: 9px !important;
}

.check-label input {
  width: 18px;
  height: 18px;
}

.digits {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: 6px;
  margin: 14px 0;
}

.digit-toggle {
  min-width: 0;
  padding: 0;
}

.digit-toggle.active {
  border-color: var(--accent);
  background: rgba(36, 92, 83, 0.12);
  color: var(--accent);
  font-weight: 800;
}

.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.combo-results {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 72px;
  margin-top: 12px;
}

.combo-pill {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfaf7;
  padding: 7px 10px;
  font-variant-numeric: tabular-nums;
}

.rules-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.6fr) minmax(280px, 1fr);
  gap: 24px;
}

.rules-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rules-list li {
  border-left: 4px solid var(--accent);
  background: rgba(255, 255, 255, 0.72);
  padding: 12px 14px;
}

.seo-section {
  background: #fbfaf7;
}

.facts-section {
  background: #ffffff;
}

.answer-summary {
  margin: 22px 0;
}

.facts-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
}

.facts-list div {
  display: grid;
  grid-template-columns: minmax(120px, 0.36fr) minmax(0, 1fr);
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfaf7;
  padding: 12px 14px;
}

.facts-list dt {
  color: var(--ink);
  font-weight: 800;
}

.facts-list dd {
  margin: 0;
  color: var(--muted);
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.seo-grid article,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: clamp(16px, 3vw, 22px);
}

.seo-grid p,
.faq-list p {
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
}

.faq-list p {
  margin-bottom: 0;
}

.internal-links-section {
  background: #eef3f0;
}

.internal-links {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.internal-links a {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  padding: 14px 16px;
  text-decoration: none;
  font-weight: 800;
}

.internal-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  color: var(--muted);
}

.site-footer .section-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.support-footer-link {
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--accent);
}

.support-footer-link:hover {
  text-decoration: underline;
}

.support-completion {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 20px;
  padding: 16px;
  border: 1px solid #c9ddd5;
  border-radius: 12px;
  background: #eff6f1;
}

.support-completion[hidden],
.support-dialog [hidden] {
  display: none;
}

.support-completion-text strong {
  font-size: 14px;
}

.support-completion-text p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.support-completion-button {
  flex-shrink: 0;
  border-color: #b7d0c4;
  color: var(--accent);
  font-weight: 600;
}

.support-dialog {
  width: min(1000px, calc(100% - 32px));
  max-width: none;
  max-height: calc(100dvh - 32px);
  margin: auto;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 24px 80px #20212433;
  overscroll-behavior: contain;
}

.support-dialog::backdrop {
  background: #20212488;
}

body:has(.support-dialog[open]) {
  overflow: hidden;
}

.support-dialog-content {
  position: relative;
  padding: 24px;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  column-gap: 14px;
}

.support-methods {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
}

.support-method {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.support-bank-card {
  background: #f6faf7;
}

.support-crypto {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  column-gap: 12px;
  align-content: start;
}

.support-crypto > :not(.support-field) {
  grid-column: 1 / -1;
}

.support-methods:has(> [hidden]) {
  grid-template-columns: minmax(0, 1fr);
}

.support-methods:has(> [hidden]) .support-method {
  max-width: 480px;
  width: 100%;
  justify-self: center;
}

.support-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 40px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 28px;
}

.support-close:hover {
  background: var(--bg);
}

.support-heart {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  grid-row: 1 / 3;
  margin: 0;
  border-radius: 12px;
  background: #eff6f1;
  color: var(--accent);
  font-size: 30px;
}

.support-dialog h2 {
  grid-column: 2;
  margin: 0 28px 8px 0;
  font-size: 25px;
  line-height: 1.25;
}

.support-intro {
  grid-column: 2;
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 14px;
}

.support-method-title {
  margin: 0 0 14px;
  font-size: 18px;
}

.support-field {
  min-width: 0;
  margin: 0 0 14px;
  padding: 0;
  border: 0;
}

.support-field legend,
.support-address-label {
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.support-choices {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.support-choice {
  min-height: 40px;
  padding: 7px 13px;
  font-size: 13px;
}

.support-choice[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.support-suggested {
  margin: 12px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.support-network-note {
  margin: 0 0 12px;
  padding: 8px 10px;
  border: 1px solid #e9d9ae;
  border-radius: 10px;
  background: #fff9eb;
  color: #745320;
  font-size: 12px;
  line-height: 1.6;
}

.support-wallet {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  align-items: start;
  column-gap: 12px;
}

.support-qr {
  grid-column: 1;
  grid-row: 1 / 5;
  width: 112px;
  min-height: 112px;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.support-qr svg {
  display: block;
  width: 100%;
  height: auto;
}

.support-qr.is-loading {
  background: var(--bg);
}

.support-address-label,
.support-address,
.support-copy,
.support-status {
  grid-column: 2;
}

.support-address {
  width: 100%;
  height: 64px;
  margin: 0 0 10px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  resize: none;
  overflow-wrap: anywhere;
  font-family: ui-monospace, monospace;
  font-size: 11px;
  line-height: 1.6;
}

.support-address:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.support-copy {
  width: 100%;
  min-height: 40px;
  font-size: 13px;
}

.support-status {
  min-height: 18px;
  margin: 5px 0 0;
  color: var(--accent);
  font-size: 12px;
}

.support-status:empty {
  display: none;
}

.support-qr-note {
  grid-column: 1 / -1;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.support-note,
.support-thanks,
.support-card-note,
.support-or {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.support-note {
  margin: 16px 0 0;
}

.support-thanks {
  grid-column: 1 / -1;
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.support-or {
  text-align: center;
}

.support-card-note {
  margin: 8px 0 0;
  text-align: left;
}

.support-card-amount {
  margin-bottom: 16px;
}

.support-amount-choices {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.support-amount-choices .support-choice {
  min-width: 0;
  white-space: normal;
}

.support-card {
  display: block;
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--accent-ink);
  text-align: center;
  text-decoration: none;
}

.support-custom-label {
  display: block;
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.support-amount-input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
}

.support-amount-input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.support-card-form .support-card {
  margin-top: 14px;
}

.support-card-status {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.support-card-status:empty {
  display: none;
}

.support-card:hover {
  background: #1b4942;
}

@media (max-width: 700px) {
  .support-dialog {
    width: min(480px, calc(100% - 24px));
  }

  .support-methods {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .support-method {
    padding: 18px;
  }
}

@media (max-width: 430px) {
  .support-dialog-content {
    padding: 22px 14px;
  }

  .support-wallet {
    grid-template-columns: 120px minmax(0, 1fr);
    column-gap: 12px;
  }

  .support-qr {
    width: 120px;
    min-height: 120px;
  }

  .support-address {
    height: 96px;
  }

  .support-completion {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
}

@media (max-width: 360px) {
  .support-wallet {
    grid-template-columns: 100px minmax(0, 1fr);
  }

  .support-qr {
    width: 100px;
    min-height: 100px;
  }
}

.content-page {
  padding: clamp(28px, 6vw, 72px) 0;
}

.content-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: clamp(18px, 4vw, 34px);
  box-shadow: 0 16px 40px rgba(32, 33, 36, 0.08);
}

.content-card h1 {
  max-width: 860px;
  font-size: clamp(2.1rem, 6vw, 4rem);
}

.content-card h2 {
  margin-top: 28px;
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.content-card p,
.content-card li {
  color: var(--muted);
}

.content-card a {
  color: var(--accent);
  font-weight: 800;
}

.content-card ul,
.content-card ol {
  display: grid;
  gap: 8px;
}

.content-tool {
  margin-top: 26px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
}

.example-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}

.example-table th,
.example-table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.example-table th {
  background: #eef3f0;
  color: var(--ink);
}

.combination-chart-section {
  margin-top: 32px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

.chart-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 26px;
}

.chart-index a {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #eef3f0;
  padding: 7px 10px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 800;
}

.cage-chart {
  margin-top: 28px;
  scroll-margin-top: 20px;
}

.cage-chart h3,
.combination-chart-section h3 {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.combination-table-wrap {
  max-width: 100%;
  overflow-x: auto;
}

.combination-table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.combination-table th,
.combination-table td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

.combination-table thead th {
  background: #eef3f0;
  color: var(--ink);
}

.combination-table tbody th {
  width: 72px;
  background: #fbfaf7;
}

.cage-range-table {
  margin-bottom: 24px;
}

/* Shared shell for the four new puzzle routes. */
.game-landing-hero {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(135deg, #eef3f0 0%, var(--bg) 68%);
  padding: clamp(30px, 7vw, 82px) 0 clamp(24px, 5vw, 54px);
}

body[data-game] .game-landing-hero {
  border-bottom: 0;
  background: transparent;
  padding: 18px 0 4px;
}

body[data-game] .game-landing-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.8rem);
}

body[data-game] .game-landing-hero .landing-lede {
  margin-top: 7px;
  font-size: 1rem;
}

body[data-game] .game-landing-hero .proof-points {
  margin-top: 9px;
}

body[data-game] .logic-play-section {
  padding-top: 12px;
}

.home-lede {
  max-width: 620px;
  margin: 12px 0 24px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.game-card-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.more-games-section {
  background: #eef3f0;
  padding: clamp(28px, 5vw, 56px) 0;
}

.more-games-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 18px;
}

.compact-game-card p:not(.eyebrow) {
  min-height: 72px;
}

.game-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 14px;
  box-shadow: 0 10px 24px rgba(32, 33, 36, 0.06);
}

.game-card h2 {
  font-size: 1.25rem;
}

.game-card p:not(.eyebrow) {
  min-height: 66px;
  margin: 9px 0 12px;
  color: var(--muted);
  font-size: 0.92rem;
}

.game-card-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
  margin-top: 12px;
}

.game-card-actions a {
  display: block;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  padding: 8px 9px;
  text-align: center;
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 800;
}

.game-card-actions a.primary {
  border-color: var(--accent);
  color: var(--accent-ink);
}

.mini-preview {
  position: relative;
  width: 100%;
  max-width: 140px;
  aspect-ratio: 1;
  flex: 0 0 auto;
  margin: 0 auto 14px;
  overflow: hidden;
  border: 2px solid #2f3336;
  border-radius: 6px;
  background: #f7f4eb;
}

.mini-tents,
.mini-slither {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  padding: 2px;
  background: #2f3336;
}

.mini-stars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  padding: 2px;
  background: #2f3336;
}

.mini-stars span {
  display: grid;
  place-items: center;
  background: #f6e6bf;
  color: #202124;
  font-size: 1.15rem;
  font-weight: 900;
}

.mini-stars span:nth-child(4n + 1) {
  background: #a7d8b6;
}

.mini-stars span:nth-child(4n) {
  background: #c5b6e3;
}

.mini-tents span,
.mini-slither span {
  display: grid;
  place-items: center;
  background: #f6e6bf;
  color: #202124;
  font-size: 1.05rem;
  font-weight: 900;
}

.mini-tents .tree {
  background: #a7d8b6;
  color: #245c53;
  font-size: 1.35rem;
}

.mini-tents .tent {
  background: #c5b6e3;
  color: #202124;
}

.mini-hashi {
  background:
    linear-gradient(#d9e8e2 1px, transparent 1px),
    linear-gradient(90deg, #d9e8e2 1px, transparent 1px),
    #f7f4eb;
  background-size: 24px 24px;
}

.mini-hashi .bridge {
  position: absolute;
  z-index: 1;
  display: block;
  height: 5px;
  border-radius: 99px;
  background: var(--accent);
}

.mini-hashi .bridge-a {
  top: 25%;
  left: 22%;
  width: 56%;
}

.mini-hashi .bridge-b {
  top: 48%;
  left: 26%;
  width: 50%;
  transform: rotate(90deg);
}

.mini-hashi .bridge-c {
  right: 20%;
  bottom: 24%;
  width: 55%;
}

.mini-hashi .island {
  position: absolute;
  z-index: 2;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 3px solid #245c53;
  border-radius: 50%;
  background: #fff;
  color: #202124;
  font-weight: 900;
}

.mini-hashi .island-a { top: 14%; left: 10%; }
.mini-hashi .island-b { top: 14%; right: 9%; }
.mini-hashi .island-c { bottom: 12%; left: 16%; }
.mini-hashi .island-d { right: 13%; bottom: 12%; }

.mini-slither::after {
  position: absolute;
  inset: 16%;
  border: 5px solid var(--accent);
  border-radius: 5px 16px 6px 13px;
  content: "";
  pointer-events: none;
}

.mini-nonogram {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2px;
  padding: 2px;
  background: #2f3336;
}

.mini-nonogram span {
  background: #f6e6bf;
}

.mini-nonogram .filled {
  background: #245c53;
}

.landing-lede {
  max-width: 680px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.logic-play-section {
  padding-top: clamp(22px, 4vw, 44px);
}

.logic-game-column {
  overflow: hidden;
}

.logic-side-panel {
  position: sticky;
  top: 82px;
}

.game-settings {
  margin: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}

.game-settings label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-weight: 760;
}

.game-settings select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  padding: 0 10px;
}

.side-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.logic-board {
  position: relative;
  width: min(100%, 560px);
  margin: 18px auto 0;
  touch-action: manipulation;
}

.logic-board-stage .logic-board {
  width: 100%;
  margin: 0;
}

.logic-board-stage.nonogram-stage {
  max-width: 600px;
}

.tents-board,
.nonogram-board {
  display: grid;
  gap: 2px;
  border: 3px solid #2f3336;
  background: #2f3336;
}

.tents-board {
  aspect-ratio: 1;
}

.board-corner,
.board-clue,
.nonogram-clue {
  display: grid;
  min-width: 0;
  min-height: 0;
  place-items: center;
  background: #fbfaf7;
  color: var(--muted);
  font-size: clamp(0.76rem, 2vw, 1rem);
  font-weight: 850;
  text-align: center;
}

.row-clue {
  padding: 0 4px;
}

.tents-board .logic-cell,
.nonogram-board .logic-cell {
  min-width: 0;
  min-height: 0;
  border: 0;
  border-radius: 0;
  background: #f6e6bf;
  color: var(--ink);
  padding: 0;
  font-size: clamp(1.1rem, 4vw, 2rem);
  font-weight: 900;
  line-height: 1;
}

.tents-board .logic-cell:disabled,
.nonogram-board .logic-cell:disabled {
  cursor: default;
  opacity: 1;
}

.tents-board .tree-cell {
  background: #a7d8b6;
  color: #245c53;
  font-size: clamp(1.35rem, 4vw, 2.15rem);
}

.tents-board .tent-cell {
  background: #c5b6e3;
  color: #3f3166;
}

.tents-board .grass-cell,
.nonogram-board .cross-cell {
  color: #7d8586;
  font-size: clamp(0.9rem, 3vw, 1.3rem);
}

.nonogram-board {
  width: min(100%, 600px);
  aspect-ratio: 1;
}

.nonogram-board .logic-cell {
  background: #fff;
}

.nonogram-board .filled-cell {
  background: #202124;
}

.logic-cell.game-error,
.island.game-error,
.slither-clue.game-error {
  box-shadow: inset 0 0 0 3px var(--warning);
}

.completion-panel {
  margin-top: 20px;
  border: 1px solid #b8d6c7;
  border-radius: 8px;
  background: #eef8f2;
  padding: 18px;
}

.completion-panel[hidden] {
  display: none;
}

.completion-panel h2 {
  font-size: clamp(1.45rem, 4vw, 2rem);
}

.completion-panel p:not(.eyebrow) {
  color: var(--muted);
}

.completion-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0;
}

.completion-stats span {
  display: grid;
  min-width: 110px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 8px 12px;
  color: var(--muted);
  font-size: 0.8rem;
}

.completion-stats strong {
  color: var(--ink);
  font-size: 1.1rem;
}

.completion-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hashi-board,
.slither-board {
  aspect-ratio: 1;
  overflow: hidden;
  border: 3px solid #2f3336;
  background: #f7f4eb;
}

.hashi-board {
  background-image: linear-gradient(rgba(47, 51, 54, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(47, 51, 54, 0.08) 1px, transparent 1px);
  background-size: calc(100% / var(--board-size)) calc(100% / var(--board-size));
}

.bridge-layer {
  position: absolute;
  inset: 0;
}

.bridge {
  position: absolute;
  z-index: 1;
  border-radius: 999px;
  background: var(--accent);
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.bridge-double {
  box-shadow: 0 10px 0 var(--accent);
}

.bridge-vertical.bridge-double {
  box-shadow: 10px 0 0 var(--accent);
}

.bridge.game-error {
  background: var(--warning);
}

.bridge-double.game-error {
  box-shadow: 0 10px 0 var(--warning);
}

.bridge-vertical.bridge-double.game-error {
  box-shadow: 10px 0 0 var(--warning);
}

.island {
  position: absolute;
  z-index: 2;
  display: grid;
  width: clamp(34px, 9vw, 50px);
  height: clamp(34px, 9vw, 50px);
  min-height: 0;
  place-items: center;
  border: 3px solid #2f3336;
  border-radius: 50%;
  background: #fff;
  padding: 0;
  font-weight: 900;
  transform: translate(-50%, -50%);
}

.island.selected {
  border-color: var(--focus);
  box-shadow: 0 0 0 4px rgba(240, 180, 77, 0.28);
}

.slither-board {
  background-color: #fff;
  background-image: linear-gradient(rgba(47, 51, 54, 0.09) 1px, transparent 1px), linear-gradient(90deg, rgba(47, 51, 54, 0.09) 1px, transparent 1px);
  background-size: calc(100% / var(--board-size)) calc(100% / var(--board-size));
}

.slither-clue {
  position: absolute;
  z-index: 1;
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 5px;
  color: var(--ink);
  font-size: clamp(0.95rem, 3vw, 1.25rem);
  font-weight: 900;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.slither-edge {
  position: absolute;
  z-index: 3;
  min-width: 0;
  min-height: 0;
  border: 0;
  border-radius: 6px;
  background: transparent;
  padding: 0;
  transform: translate(-50%, -50%);
}

.slither-edge::after {
  position: absolute;
  content: "";
  background: transparent;
}

.edge-horizontal {
  height: 32px;
}

.edge-vertical {
  width: 32px;
}

.edge-horizontal::after {
  top: 50%;
  left: 0;
  width: 100%;
  height: 5px;
  border-radius: 999px;
  transform: translateY(-50%);
}

.edge-vertical::after {
  top: 0;
  left: 50%;
  width: 5px;
  height: 100%;
  border-radius: 999px;
  transform: translateX(-50%);
}

.slither-edge.edge-line::after {
  background: var(--accent);
}

.slither-edge.edge-cross::after {
  background: transparent;
  content: "×";
  color: #7d8586;
  font-size: clamp(1rem, 3vw, 1.4rem);
  font-weight: 900;
  line-height: 1;
  text-align: center;
}

.slither-edge.game-error::after {
  background: var(--warning);
}

.slither-edge.edge-cross.game-error::after {
  background: transparent;
  color: var(--warning);
}

.game-copy-section {
  padding-top: 24px;
}

.game-copy-section h2 + p {
  color: var(--muted);
}

.game-links {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

@media (max-width: 840px) {
  .topbar {
    align-items: start;
    flex-direction: column;
  }

  .nav {
    margin-left: 0;
  }

  .language-switcher {
    align-self: flex-end;
  }

  .site-footer .section-shell {
    align-items: start;
    flex-direction: column;
  }

  .play-layout,
  .tool-layout,
  .rules-grid,
  .seo-grid,
  .internal-links {
    grid-template-columns: 1fr;
  }

  .game-head {
    flex-direction: column;
  }

  .star-mode-buttons button {
    min-height: 40px;
    font-size: 0.78rem;
  }

  .stats {
    width: 100%;
  }

  .facts-list div {
    grid-template-columns: 1fr;
  }

  .logic-side-panel {
    position: static;
  }

  .games-switcher {
    align-self: flex-start;
  }

  .game-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .section-shell {
    width: calc(100% - 20px);
  }

  .topbar {
    align-items: center;
    flex-direction: row;
    padding: 8px 10px;
  }

  .brand {
    gap: 8px;
  }

  .brand span:last-child {
    display: none;
  }

  .nav {
    display: none;
  }

  .language-switcher {
    width: auto;
    margin-left: auto;
    align-self: auto;
  }

  .language-switcher summary {
    justify-content: center;
    min-height: 34px;
    padding: 0 10px;
  }

  .language-menu {
    right: 0;
    left: auto;
  }

  .play-section {
    padding: 10px 0 20px;
  }

  .game-column {
    padding: 6px;
  }

  .game-head {
    gap: 8px;
    margin-bottom: 10px;
  }

  h1 {
    font-size: 1.7rem;
  }

  .game-intro {
    display: -webkit-box;
    margin-top: 6px;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .proof-points {
    display: none;
  }

  .stats div,
  .metric-strip div {
    padding-right: 6px;
    padding-left: 6px;
  }

  .toolbar,
  .mini-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .toolbar .primary {
    grid-column: 1 / -1;
  }

  .digits {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .game-landing-hero {
    padding-top: 26px;
  }

  .logic-board {
    margin-top: 12px;
  }

  .logic-game-column {
    padding: 10px;
  }

  .tents-board .logic-cell,
  .nonogram-board .logic-cell {
    font-size: 1.2rem;
  }

  .nonogram-board {
    border-width: 2px;
  }

  .completion-actions,
  .completion-actions button {
    width: 100%;
  }

  .game-card-grid {
    grid-template-columns: 1fr;
  }

  .games-switcher {
    margin-left: 0;
    align-self: auto;
  }

  .games-switcher .language-menu {
    right: auto;
    left: 0;
  }

  .game-card p:not(.eyebrow) {
    min-height: 0;
  }

}