:root {
  --felt: #14110d;
  --felt-2: #1c1812;
  --ink: #efe6d4;
  --ink-dim: #b4a890;
  --line: #3a2d1f;
  --goban: #d7a15a;
  --goban-dark: #9a6a2e;
  --grid: #5a3a16;
  --seal: #c43a22;
  --seal-ink: #fff4ea;
  --stone-b: #1b1d22;
  --stone-w: #f4efe4;
  --paper: #f3ead8;
  --max: 68rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

.hero[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 80% -10%, #2a2218 0%, transparent 55%),
    var(--felt);
  font-family: "Source Sans 3", "Noto Sans SC", "Segoe UI", sans-serif;
  font-size: 1.05rem;
  line-height: 1.6;
}

a { color: inherit; }

.wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 0.75rem;
  border-bottom: 1px solid var(--line);
}

.mark {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-family: "Source Serif 4", "Noto Serif SC", Georgia, serif;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.mark img { display: block; border-radius: 8px; }

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1rem;
  font-size: 0.92rem;
}

nav a {
  color: var(--ink-dim);
  text-decoration: none;
}

nav a:hover,
nav a[aria-current="page"] { color: var(--ink); }

nav a.play-link {
  color: var(--seal-ink);
  background: var(--seal);
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-weight: 700;
}

nav a.play-link:hover { color: var(--seal-ink); filter: brightness(1.08); }

nav a:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--seal);
  outline-offset: 3px;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
  padding: 3.2rem 0 2.4rem;
}

.kicker {
  margin: 0 0 0.6rem;
  color: var(--seal);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3 {
  font-family: "Source Serif 4", "Noto Serif SC", Georgia, serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 { margin: 0 0 1rem; font-size: clamp(2.1rem, 4vw, 3.3rem); }
h2 { margin: 0 0 0.8rem; font-size: 1.7rem; }
h3 { margin: 0 0 0.4rem; font-size: 1.15rem; }

.lede {
  margin: 0 0 1.4rem;
  max-width: 38rem;
  color: var(--ink-dim);
  font-size: 1.12rem;
}

.actions { display: flex; flex-wrap: wrap; gap: 0.7rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.6rem;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 600;
}

.btn.seal {
  background: var(--seal);
  border-color: var(--seal);
  color: var(--seal-ink);
}

.btn.ghost { color: var(--ink); }

.board-card {
  justify-self: end;
  width: min(100%, 22rem);
  max-width: 100%;
  overflow: hidden;
  padding: 1rem 1rem 0.85rem;
  background:
    linear-gradient(160deg, #e8b56a 0%, var(--goban) 42%, var(--goban-dark) 100%);
  border-radius: 10px;
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.35),
    inset 0 0 0 1px rgba(90, 50, 10, 0.25);
  color: var(--grid);
}

.board-card svg { display: block; width: 100%; height: auto; }

.board-caption {
  margin: 0.55rem 0 0;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: #4a2d10;
}

section { padding: 2.2rem 0; border-top: 1px solid var(--line); }

.moves {
  display: grid;
  gap: 0.9rem;
  margin: 1.2rem 0 0;
}

.move {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 0.9rem;
  align-items: start;
}

.ply {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  color: var(--seal);
  font-weight: 600;
}

.packs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
  margin-top: 1.2rem;
}

.pack {
  padding: 1.1rem 1rem 1rem;
  background: var(--felt-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.pack.popular { border-color: #7a3a28; }

.price {
  margin: 0.35rem 0;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 1.55rem;
}

.muted, .fine { color: var(--ink-dim); }
.fine { font-size: 0.92rem; }

.note {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--seal);
  background: #1a1611;
}

.legal {
  padding: 2rem 0 3rem;
  max-width: 46rem;
}

.legal p, .legal li { color: var(--ink-dim); }
.legal ul { padding-left: 1.2rem; }
.legal h2 { margin-top: 1.8rem; }

.company {
  display: grid;
  gap: 0.25rem;
  margin: 1rem 0 0;
  font-size: 0.98rem;
}

.company strong { color: var(--ink); }

.foot {
  padding: 1.4rem 0 2.2rem;
  border-top: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 0.88rem;
}

.foot-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
}

.zh-block {
  margin-top: 2rem;
  padding-top: 1.4rem;
  border-top: 1px dashed var(--line);
}

.chrome {
  background: #2b2b2b;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #111;
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
  color: #e8eaed;
  font-family: "Segoe UI", "Source Sans 3", sans-serif;
  font-size: 13px;
}

.chrome-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: #3c4043;
}

.chrome-dots { display: flex; gap: 5px; }
.chrome-dots i {
  width: 9px; height: 9px; border-radius: 50%;
  background: #9aa0a6; display: block;
}

.chrome-omni {
  flex: 1;
  background: #202124;
  border-radius: 16px;
  padding: 5px 12px;
  color: #9aa0a6;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11px;
}

.chrome-body { padding: 12px 14px 14px; background: #202124; min-height: 148px; }

.chrome-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 0;
}

.chrome-title { font-size: 16px; font-weight: 600; }

.toggle {
  width: 36px; height: 20px; border-radius: 99px;
  background: #8ab4f8; position: relative;
}
.toggle::after {
  content: "";
  position: absolute; top: 2px; right: 2px;
  width: 16px; height: 16px; border-radius: 50%;
  background: #202124;
}

.chrome-btn {
  display: inline-block;
  background: #8ab4f8; color: #202124;
  border-radius: 4px; padding: 6px 10px; font-weight: 600;
}

.folder {
  margin-top: 10px;
  border: 1px dashed #5f6368;
  border-radius: 8px;
  padding: 10px 12px;
  color: #9aa0a6;
}
.folder strong { color: #e8eaed; }

.steps { display: grid; gap: 1.4rem; margin-top: 1.4rem; }
.step {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 1.2rem;
  align-items: center;
}
.step-copy h3 { margin-top: 0.2rem; }

.dl-box {
  margin: 1.2rem 0 0.4rem;
  padding: 1rem 1.1rem;
  background: var(--felt-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.warn { font-size: 0.92rem; color: var(--ink-dim); }

.shot {
  margin: 0;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #0b0b0c;
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.38);
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
}

.shot figcaption {
  margin: 0;
  padding: 0.65rem 0.9rem 0.75rem;
  color: var(--ink-dim);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  background: #16130f;
  border-top: 1px solid var(--line);
}

.story {
  max-width: 46rem;
}

.story p {
  color: var(--ink-dim);
}

.story p.lede {
  max-width: none;
}

.site-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 0.9rem;
  margin-top: 1.2rem;
}

.site-card {
  padding: 1.05rem 1rem 1rem;
  background: var(--felt-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}

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

.site-card ul {
  margin: 0.55rem 0 0;
  padding-left: 1.15rem;
}

.site-card li {
  color: var(--ink-dim);
  margin: 0.22rem 0;
}

.site-card li strong { color: var(--ink); }

.paths {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.2rem;
}

.path {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.15rem 1.05rem 1.05rem;
  background: var(--felt-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.path.featured { border-color: #7a3a28; }

.path-kicker {
  margin: 0;
  color: var(--seal);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.path h3 { margin: 0; }

.path p {
  margin: 0 0 0.4rem;
  color: var(--ink-dim);
  flex: 1;
}

.path .btn { align-self: flex-start; margin-top: 0.2rem; }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 1.8rem; }
  .board-card { justify-self: start; }
  .packs { grid-template-columns: 1fr; }
  .site-grid { grid-template-columns: 1fr; }
  .paths { grid-template-columns: 1fr; }
  .top { flex-direction: column; align-items: flex-start; }
  nav { justify-content: flex-start; gap: 0.35rem 0.85rem; font-size: 0.86rem; }
  .step { grid-template-columns: 1fr; }
}

.train-now, .train-syllabus, .train-library { margin: 0 0 2rem; }
.train-now h2, .train-syllabus h2, .train-library h2 {
  margin: 0 0 0.6rem;
  font-family: "Source Serif 4", "Noto Serif SC", serif;
  font-size: 1.35rem;
}
.train-band { margin: 0 0 0.9rem; }
.train-band.on h3 { color: var(--goban); }
.train-band h3 {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.train-skills { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.train-skill {
  border: 1px solid var(--line);
  padding: 0.2rem 0.65rem;
  font-size: 0.92rem;
}
.train-skill.held { border-color: var(--goban); color: var(--goban); }
.train-login {
  display: grid;
  grid-template-columns: 1fr 1fr auto auto;
  gap: 0.5rem;
  align-items: center;
  margin: 0 0 1.6rem;
  padding: 0.9rem 0 0;
}
.train-login p { grid-column: 1 / -1; margin: 0; }
.train-login input {
  font: inherit;
  color: var(--ink);
  background: var(--felt-2);
  border: 1px solid var(--line);
  padding: 0.4rem 0.6rem;
}
.train-login button {
  font: inherit;
  color: var(--seal-ink);
  background: var(--seal);
  border: 0;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
}
.train-login button.ghost {
  color: var(--ink-dim);
  background: transparent;
  border: 1px solid var(--line);
}
.train-login .status { grid-column: 1 / -1; }
.prep-lib { margin: 0 0 3rem; }
.prep-lib summary {
  cursor: pointer;
  color: var(--ink-dim);
  margin: 0 0 0.8rem;
}
.prep-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding-bottom: 3rem;
}
.prep-card {
  display: block;
  text-decoration: none;
  border: 1px solid var(--line);
  border-left: 6px solid var(--goban);
  padding: 1.1rem 1.2rem 1.2rem;
  background: var(--felt-2);
}
.prep-card h2 { margin: 0 0 0.35rem; font-family: "Source Serif 4", "Noto Serif SC", serif; }
.prep-back { margin: 0 0 1rem; }
.prep-back a { color: var(--ink-dim); }
.prep-head h1 { margin: 0 0 0.4rem; }
.prep-lines {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.5rem;
  margin: 1.2rem 0;
}
.prep-lines h3 {
  margin: 0 0 0.3rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--goban);
}
.prep-lines p { margin: 0; color: var(--ink-dim); }
.prep-stats { margin: 0 0 1rem; }
.prep-filters { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0 0 1rem; }
.prep-filters button {
  font: inherit;
  color: var(--ink-dim);
  background: transparent;
  border: 1px solid var(--line);
  padding: 0.25rem 0.7rem;
  cursor: pointer;
}
.prep-filters button.on {
  color: var(--seal-ink);
  background: var(--seal);
  border-color: var(--seal);
}
.prep-drills { list-style: none; margin: 0 0 3rem; padding: 0; }
.prep-drills li { border-top: 1px solid var(--line); }
.prep-drill {
  display: grid;
  gap: 0.2rem;
  padding: 0.85rem 0;
  text-decoration: none;
}
.prep-kicker {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  color: var(--goban);
}
.prep-drill strong { font-weight: 600; }

@media (max-width: 960px) {
  .prep-list, .prep-lines { grid-template-columns: 1fr; }
  .train-login { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}