/* qams.io. Qams's own look: deep ink, the app icon's indigo, warm paper, a gold accent. Self-hosted fonts only. */
@font-face { font-family: 'Bricolage Grotesque'; src: url(/assets/fonts/bricolage.woff2) format('woff2');
  font-weight: 500 800; font-stretch: 75% 100%; font-display: swap; }
@font-face { font-family: 'Inter'; src: url(/assets/fonts/inter.woff2) format('woff2'); font-weight: 400 700; font-display: swap; }

:root {
  --paper: #fbfaf7;
  --card: #ffffff;
  --tint: #f3f1ec;
  --ink: #10142a;
  --ink2: #454c67;
  --mute: #6f7690;
  --line: #e5e2ea;
  --indigo: #3b5bdb;
  --indigo-deep: #2c45b8;
  --indigo-soft: #ebefff;
  --gold: #f0ab24;
  --green: #2a9d6a;
  --red: #d9483b;
  --sq-light: #f0d9b5;
  --sq-dark: #b58863;
  --sketch: #eef1fb;
  --shadow: 0 1px 2px rgba(16, 20, 42, .06), 0 18px 50px -12px rgba(16, 20, 42, .22);
  --display: 'Bricolage Grotesque', 'Segoe UI', system-ui, sans-serif;
  --sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --r: 18px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0c0f1e;
    --card: #141831;
    --tint: #10142a;
    --ink: #eef0fa;
    --ink2: #b9bfd6;
    --mute: #8c93ad;
    --line: #262b47;
    --indigo: #6d86f5;
    --indigo-deep: #8ea0f7;
    --indigo-soft: #1b2247;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 18px 50px -12px rgba(0, 0, 0, .6);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16.5px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden; }
h1, h2, h3 { font-family: var(--display); font-weight: 700; letter-spacing: -.02em; line-height: 1.08; margin: 0; }
p { margin: 0; }
a { color: var(--indigo); text-underline-offset: 3px; }
img, svg { display: block; }
.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 16px; }
:focus-visible { outline: 2.5px solid var(--indigo); outline-offset: 2px; border-radius: 6px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 22px;
  border-radius: 999px; font: 600 15.5px/1 var(--sans); text-decoration: none; border: 1.5px solid transparent;
  cursor: pointer; transition: transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--indigo); color: #fff; box-shadow: 0 8px 22px -8px rgba(59, 91, 219, .7); }
.btn-primary:hover { background: var(--indigo-deep); }
@media (prefers-color-scheme: dark) { .btn-primary { color: #0c0f1e; } }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink2); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 14.5px; }

/* Header */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid transparent; }
.top.scrolled { border-bottom-color: var(--line); }
.top-in { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--indigo); text-decoration: none; }
.brand .mark { width: 34px; height: 34px; }
.brand .word { font: 800 25px/1 var(--display); letter-spacing: -.03em; color: var(--ink); }
.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { color: var(--ink2); text-decoration: none; font-weight: 500; font-size: 15px; }
.nav a:hover { color: var(--ink); }
@media (max-width: 820px) { .nav { display: none; } .top-in > .btn { margin-left: auto; } }

/* Hero */
.hero { position: relative; padding: 56px 0 88px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(60% 55% at 78% 38%, color-mix(in srgb, var(--indigo) 22%, transparent), transparent 70%),
    repeating-conic-gradient(color-mix(in srgb, var(--indigo) 7%, transparent) 0 25%, transparent 0 50%) 0 0 / 88px 88px;
  -webkit-mask-image: radial-gradient(75% 90% at 70% 40%, #000 20%, transparent 78%);
  mask-image: radial-gradient(75% 90% at 70% 40%, #000 20%, transparent 78%); }
.hero-in { display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; }
.pill { display: inline-flex; align-items: center; gap: 9px; padding: 7px 14px 7px 12px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--line); color: var(--ink2); font-size: 13.5px; font-weight: 500;
  box-shadow: 0 1px 2px rgba(16, 20, 42, .05); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 4px color-mix(in srgb, var(--gold) 25%, transparent);
  animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 7px color-mix(in srgb, var(--gold) 0%, transparent); } }
.hero h1 { font-size: clamp(44px, 6.6vw, 80px); margin: 22px 0 22px; letter-spacing: -.035em; line-height: .98; }
.hl { color: var(--indigo); position: relative; white-space: nowrap; }
.hl::after { content: ''; position: absolute; left: 2px; right: 4px; bottom: .02em; height: .14em; border-radius: 99px;
  background: var(--gold); opacity: .85; z-index: -1; }
.lead { font-size: 18.5px; color: var(--ink2); max-width: 560px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.facts { list-style: none; padding: 0; margin: 30px 0 0; display: flex; flex-wrap: wrap; gap: 8px 22px; color: var(--mute); font-size: 14px; }
.facts li { display: inline-flex; align-items: center; gap: 8px; }
.facts li::before { content: ''; width: 6px; height: 6px; border-radius: 2px; background: var(--indigo); opacity: .7; }

/* The puzzle */
.hero-art { position: relative; justify-self: center; width: min(440px, 100%); }
.puzzle { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: 18px;
  box-shadow: var(--shadow); transform: rotate(-1.2deg); transition: transform .4s ease; }
.puzzle:hover, .puzzle:focus-within { transform: rotate(0); }
.puzzle-head { display: flex; flex-direction: column; gap: 4px; padding: 2px 4px 14px; }
.tag { font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--indigo); }
.puzzle-head strong { font: 700 20px/1.2 var(--display); letter-spacing: -.01em; }
.board { display: grid; box-shadow: 0 2px 8px rgba(0, 0, 0, .18); grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr); aspect-ratio: 1; border-radius: 12px; overflow: hidden;
  user-select: none; -webkit-user-select: none; touch-action: manipulation; }
.sq { position: relative; border: 0; padding: 0; margin: 0; min-width: 0; min-height: 0; background: var(--sq-light); cursor: default; }
.sq.d { background: var(--sq-dark); }
.sq .pc { position: absolute; inset: 4%; width: 92%; height: 92%; transition: transform .18s ease; pointer-events: none; }
.sq.mine { cursor: pointer; }
.sq.mine:hover .pc { transform: translateY(-2px) scale(1.04); }
.sq.sel { background-image: linear-gradient(rgba(20, 85, 30, .5), rgba(20, 85, 30, .5)); }
.sq.sel .pc { transform: scale(1.08); }
.sq.to { cursor: pointer; }
.sq.to::after { content: ''; position: absolute; left: 37%; top: 37%; width: 26%; height: 26%; border-radius: 50%; background: rgba(20, 85, 30, .5); }
.sq.last { background-image: linear-gradient(rgba(155, 199, 0, .41), rgba(155, 199, 0, .41)); }
.sq.mated { background-image: radial-gradient(ellipse at center, #ff0000 0%, #e70000 25%, rgba(169, 0, 0, 0) 89%, rgba(158, 0, 0, 0) 100%); }
.sq.wrong { animation: shake .35s ease; }
@keyframes shake { 25% { transform: translateX(-3px); } 75% { transform: translateX(3px); } }
.sq .co { position: absolute; font: 700 9.5px/1 var(--sans); color: #b58863; pointer-events: none; }
.sq .co.f { right: 3px; bottom: 3px; }
.sq .co.r { left: 3px; top: 3px; }
.sq.d .co { color: #f0d9b5; }
.puzzle-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 4px 2px; min-height: 58px; }
.puzzle-status { color: var(--ink2); font-size: 14.5px; line-height: 1.45; }
.puzzle-status b { color: var(--green); }
.solved .puzzle-status { color: var(--ink); }
.chip { position: absolute; display: flex; align-items: center; gap: 8px; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 9px 13px; font-size: 13px; font-weight: 500; color: var(--ink2); box-shadow: var(--shadow);
  white-space: nowrap; animation: float 6s ease-in-out infinite; pointer-events: none; }
.chip .ok { display: grid; place-items: center; width: 20px; height: 20px; border-radius: 6px; background: color-mix(in srgb, var(--green) 16%, transparent); color: var(--green); font-size: 12px; font-weight: 700; }
.chip-a { right: -30px; top: -32px; }
.chip-b { left: -44px; bottom: -34px; animation-delay: -3s; }
@keyframes float { 50% { transform: translateY(-8px); } }
@media (prefers-reduced-motion: reduce) { .chip, .dot { animation: none; } .puzzle { transform: none; } html { scroll-behavior: auto; } }

/* Sections */
.sec { padding: 96px 0; }
.sec-tint { background: var(--tint); border-block: 1px solid var(--line); }
.sec-head { max-width: 680px; margin-bottom: 44px; }
.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--indigo); margin-bottom: 14px; }
.sec h2 { font-size: clamp(32px, 4.4vw, 50px); letter-spacing: -.03em; }
.sub { font-size: 18px; color: var(--ink2); margin-top: 16px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 26px 24px 28px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: transparent; }
.card h3 { font-size: 21px; margin: 18px 0 8px; letter-spacing: -.015em; }
.card p { color: var(--ink2); font-size: 15.5px; }
.ic { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 13px; background: var(--indigo-soft); color: var(--indigo); }
.ic svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card-feature { background: var(--ink); color: var(--paper); border-color: var(--ink); position: relative; overflow: hidden; }
.card-feature::before { content: ''; position: absolute; right: -40px; top: -40px; width: 180px; height: 180px; opacity: .18;
  background: repeating-conic-gradient(#fff 0 25%, transparent 0 50%) 0 0 / 45px 45px; transform: rotate(12deg); border-radius: 16px; }
.card-feature p { color: color-mix(in srgb, var(--paper) 78%, transparent); }
.card-feature .ic { background: rgba(255, 255, 255, .1); color: var(--gold); }
@media (prefers-color-scheme: dark) { .card-feature { background: var(--indigo-soft); color: var(--ink); border-color: var(--line); }
  .card-feature p { color: var(--ink2); } }

.split { display: grid; grid-template-columns: .95fr 1.05fr; gap: 64px; align-items: start; }
.split .sec-head { margin-bottom: 0; }
.points { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.points li { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 22px 24px 24px 64px; position: relative; }
.points li::before { content: ''; position: absolute; left: 24px; top: 26px; width: 22px; height: 22px; border-radius: 7px;
  background: var(--indigo) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 12.5 4 4 8-9'/%3E%3C/svg%3E") center / 14px no-repeat; }
.points h3 { font-size: 19px; margin-bottom: 6px; }
.points p { color: var(--ink2); font-size: 15.5px; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; position: relative; }
.steps::before { content: ''; position: absolute; left: 24px; right: 24px; top: 34px; height: 2px;
  background: linear-gradient(90deg, var(--indigo) 0 30%, var(--line) 30%); }
.step { position: relative; padding: 0 6px; }
.when { position: relative; display: inline-flex; align-items: center; height: 30px; padding: 0 14px; margin: 19px 0 22px; border-radius: 99px;
  background: var(--card); border: 1.5px solid var(--line); font-size: 13px; font-weight: 600; color: var(--mute); }
.step.now .when { background: var(--indigo); border-color: var(--indigo); color: #fff; box-shadow: 0 0 0 6px color-mix(in srgb, var(--indigo) 18%, transparent); }
@media (prefers-color-scheme: dark) { .step.now .when { color: #0c0f1e; } }
.step h3 { font-size: 22px; margin-bottom: 8px; letter-spacing: -.015em; }
.step p { color: var(--ink2); font-size: 15.5px; max-width: 330px; }

/* Join */
.join { background: var(--ink); color: var(--paper); position: relative; overflow: hidden; }
.join::before { content: ''; position: absolute; inset: 0; opacity: .06;
  background: repeating-conic-gradient(#fff 0 25%, transparent 0 50%) 0 0 / 88px 88px;
  -webkit-mask-image: linear-gradient(100deg, #000, transparent 60%); mask-image: linear-gradient(100deg, #000, transparent 60%); }
@media (prefers-color-scheme: dark) { .join { background: #151a36; color: var(--ink); } }
.join .eyebrow { color: var(--gold); }
.join .sub { color: color-mix(in srgb, currentColor 75%, transparent); }
.join-in { position: relative; display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; align-items: start; }
.ticks { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 12px; }
.ticks li { display: flex; gap: 12px; font-size: 15.5px; color: color-mix(in srgb, currentColor 88%, transparent); }
.ticks li::before { content: '✓'; flex: none; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 7px;
  background: rgba(240, 171, 36, .16); color: var(--gold); font-size: 12px; font-weight: 700; margin-top: 1px; }
.join-form { background: var(--card); color: var(--ink); border-radius: 22px; padding: 28px; display: grid; gap: 16px; box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .5); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { display: grid; gap: 7px; font-size: 14px; font-weight: 600; color: var(--ink); }
.opt { font-weight: 400; color: var(--mute); }
input, select, textarea { width: 100%; font: 400 16px/1.4 var(--sans); color: var(--ink); background: var(--paper);
  border: 1.5px solid var(--line); border-radius: 12px; padding: 12px 14px; min-height: 48px; transition: border-color .15s ease, box-shadow .15s ease; }
textarea { resize: vertical; min-height: 92px; }
select { appearance: none; -webkit-appearance: none; padding-right: 40px; cursor: pointer;
  background: var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236f7690' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") right 14px center / 18px no-repeat; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--indigo); box-shadow: 0 0 0 4px color-mix(in srgb, var(--indigo) 18%, transparent); }
input[aria-invalid="true"] { border-color: var(--red); }
::placeholder { color: var(--mute); opacity: .8; }
.join-form .btn { justify-self: start; }
.form-note { font-size: 13.5px; color: var(--mute); }
.form-note.err { color: var(--red); font-weight: 500; }

/* Footer */
.foot { padding: 44px 0 40px; border-top: 1px solid var(--line); }
.foot-in { display: grid; grid-template-columns: 1fr auto; gap: 18px 32px; align-items: center; }
.foot-brand { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.foot-brand p { color: var(--mute); font-size: 14.5px; }
.foot-links { display: flex; gap: 22px; flex-wrap: wrap; }
.foot-links a { color: var(--ink2); text-decoration: none; font-size: 14.5px; }
.foot-links a:hover { color: var(--ink); text-decoration: underline; }
.foot-copy { color: var(--mute); font-size: 13.5px; grid-column: 1 / -1; }

/* Simple pages: sign-in, privacy, 404 */
.page { padding: 64px 0 96px; }
.narrow { width: min(720px, 100% - 32px); margin-inline: auto; }
.prose h1 { font-size: clamp(34px, 5vw, 48px); letter-spacing: -.03em; margin-bottom: 10px; }
.prose .date { color: var(--mute); margin-bottom: 32px; }
.prose h2 { font-size: 21px; margin: 32px 0 8px; letter-spacing: -.01em; }
.prose p, .prose li { color: var(--ink2); }
.prose p + p { margin-top: 12px; }
.prose ul { padding-left: 20px; margin: 8px 0 0; }

.signin { min-height: calc(100vh - 68px - 140px); display: grid; place-items: center; padding: 56px 16px 80px; position: relative; }
.signin .hero-bg { -webkit-mask-image: radial-gradient(60% 60% at 50% 40%, #000 10%, transparent 75%); mask-image: radial-gradient(60% 60% at 50% 40%, #000 10%, transparent 75%); }
.signin-card { width: min(420px, 100%); background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: 32px 28px 28px;
  box-shadow: var(--shadow); display: grid; gap: 18px; }
.signin-card .mark { width: 48px; height: 48px; color: var(--indigo); }
.signin-card h1 { font-size: 30px; letter-spacing: -.025em; }
.signin-card .hint { font-size: 14px; color: var(--mute); font-weight: 400; }
.signin-card .btn { width: 100%; }
.msg { border-radius: 12px; padding: 12px 14px; font-size: 14.5px; font-weight: 500; }
.msg.err { background: color-mix(in srgb, var(--red) 12%, transparent); color: var(--red); }
.msg.info { background: var(--indigo-soft); color: var(--ink2); font-weight: 400; }
.small { font-size: 13.5px; color: var(--mute); }

.lost { text-align: center; display: grid; justify-items: center; gap: 18px; }
.lost .board-mini { width: 132px; height: 132px; border-radius: 14px; background: repeating-conic-gradient(var(--sq-dark) 0 25%, var(--sq-light) 0 50%) 0 0 / 33px 33px; box-shadow: var(--shadow); }

/* Subject tabs and sketches */
.spec-tabs { display: flex; gap: 4px; padding: 4px; margin: -4px -4px 14px; background: var(--tint); border-radius: 14px; }
.spec-tabs button { flex: 1; min-height: 40px; border: 0; border-radius: 10px; background: transparent; color: var(--ink2);
  font: 600 14.5px/1 var(--sans); cursor: pointer; transition: background .15s ease, color .15s ease; }
.spec-tabs button:hover { color: var(--ink); }
.spec-tabs button[aria-selected="true"] { background: var(--card); color: var(--ink); box-shadow: 0 1px 3px rgba(16, 20, 42, .12); }
.panels { display: grid; }
.panel { grid-area: 1 / 1; display: flex; flex-direction: column; min-width: 0; }
.panel.off { visibility: hidden; }
.state { color: var(--mute); }
.state.now { color: var(--green); }
.hand { flex: 1; display: grid; align-content: center; gap: 6px; padding: 18px 22px; border-radius: 12px; background: var(--sketch);
  color: #10142a; }
.suit { display: flex; align-items: center; gap: 16px; font: 700 clamp(22px, 3vw, 28px)/1.25 var(--display); letter-spacing: .14em; }
.suit .s { width: 1.1em; text-align: center; letter-spacing: 0; font-family: 'Segoe UI Symbol', 'Apple Symbols', system-ui, sans-serif; }
.s.rd { color: #d9483b; }
.hand-note { margin-top: 6px; font-size: 13px; color: #454c67; }
.staff { flex: 1; width: 100%; height: auto; border-radius: 12px; background: var(--sketch); padding: 8px; }
.staff .ln, .staff .bar, .staff .stem { stroke: #10142a; stroke-width: 2; }
.staff .bar.thick { stroke-width: 4.5; }
.staff .ts { font: 800 28px/1 var(--display); fill: #10142a; text-anchor: middle; }
.staff .hd { fill: #10142a; }
.staff .hd-open, .choice .hd-open { fill: none; stroke: currentColor; stroke-width: 2.4; }
.staff .hd-open { stroke: #10142a; }
.staff .slot { fill: none; stroke: #3b5bdb; stroke-width: 2; stroke-dasharray: 5 5; }
.staff .q { font: 700 26px/1 var(--display); fill: #3b5bdb; text-anchor: middle; transition: opacity .2s ease; }
.staff .fill { opacity: 0; transition: opacity .3s ease; }
.solved .staff .fill { opacity: 1; }
.solved .staff .q { opacity: 0; }
.choices { display: flex; gap: 10px; margin-top: 14px; }
.choice { flex: 1; min-height: 48px; display: grid; place-items: center; border-radius: 12px; border: 1.5px solid var(--line);
  background: var(--paper); color: var(--ink); font: 700 19px/1 var(--display); cursor: pointer; transition: border-color .15s ease, background .15s ease; }
.choice:hover:not(:disabled) { border-color: var(--indigo); }
.choice svg { width: 26px; height: 34px; }
.choice .hd { fill: currentColor; }
.choice .stem { stroke: currentColor; stroke-width: 2.2; }
.choice.right { border-color: var(--green); background: color-mix(in srgb, var(--green) 12%, var(--card)); color: var(--green); }
.choice.wrong { border-color: var(--red); color: var(--red); opacity: .6; animation: shake .35s ease; }
.choice:disabled { cursor: default; }
.panel .puzzle-status { margin-top: 12px; min-height: 42px; }
.panel[data-puzzle] .puzzle-status { margin-top: 0; min-height: 0; }

/* Specializations */
.layers { display: grid; gap: 10px; margin-bottom: 26px; }
.layer { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 16px 18px; border-radius: var(--r); border: 1px solid var(--line); background: var(--card); }
.layer-top { background: var(--ink); border-color: var(--ink); color: var(--paper); margin-inline: 4%; }
@media (prefers-color-scheme: dark) { .layer-top { background: var(--indigo-soft); color: var(--ink); border-color: var(--line); } }
.layer-name { font-size: 12.5px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; margin-right: 8px; color: var(--mute); }
.layer-top .layer-name { color: var(--gold); }
.tok { display: inline-flex; align-items: center; height: 32px; padding: 0 13px; border-radius: 99px; font-size: 14px; font-weight: 500;
  background: var(--tint); color: var(--ink2); border: 1px solid var(--line); }
.layer-top .tok { background: rgba(255, 255, 255, .08); color: inherit; border-color: rgba(255, 255, 255, .16); }
.layer-top .tok.strong { background: var(--gold); color: #10142a; border-color: var(--gold); font-weight: 600; }
.layer-top .tok.dashed { background: transparent; border-style: dashed; opacity: .8; }
@media (prefers-color-scheme: dark) { .layer-top .tok { background: rgba(255, 255, 255, .05); border-color: var(--line); } }
.specs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.spec { display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 22px 22px 24px; color: inherit; text-decoration: none; }
.spec-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.glyph { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: var(--indigo-soft); color: var(--indigo);
  font: 700 22px/1 'Segoe UI Symbol', 'Apple Symbols', system-ui, sans-serif; }
.spec .state { font-size: 12.5px; font-weight: 600; letter-spacing: .04em; padding: 5px 10px; border-radius: 99px; background: var(--tint); }
.spec .state.now { background: color-mix(in srgb, var(--green) 14%, transparent); }
.spec h3 { font-size: 21px; margin-bottom: 6px; }
.spec p:last-child { color: var(--ink2); font-size: 15px; }
.spec-yours { border-style: dashed; transition: border-color .15s ease, transform .2s ease; }
.spec-yours:hover { border-color: var(--indigo); transform: translateY(-2px); }
a.card { text-decoration: none; display: block; }
.card-wide { grid-column: 1 / -1; display: grid !important; grid-template-columns: auto 1fr; column-gap: 20px; align-items: center; }
.card-wide .ic { grid-row: span 2; }
.card-wide h3 { margin: 0 0 4px; }
@media (max-width: 680px) { .card-wide { grid-template-columns: 1fr; } .card-wide .ic { grid-row: auto; } .card-wide h3 { margin: 18px 0 8px; } }
a.card:not(.card-feature) { color: inherit; }

/* Narrow screens */
@media (max-width: 980px) {
  .hero-in, .split, .join-in { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding-top: 36px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .chip-a { right: -8px; }
  .chip-b { left: -8px; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .sec { padding: 72px 0; }
  .grid, .steps, .row { grid-template-columns: 1fr; }
  .steps { gap: 4px; }
  .steps::before { left: 15px; right: auto; top: 30px; bottom: 30px; width: 2px; height: auto; background: linear-gradient(180deg, var(--indigo) 0 22%, var(--line) 22%); }
  .step { padding: 0 0 18px 48px; }
  .when { position: absolute; left: 0; margin: 0; height: 30px; padding: 0; width: 32px; justify-content: center; font-size: 0; }
  .when::before { content: ''; width: 9px; height: 9px; border-radius: 50%; background: currentColor; }
  .step h3::before { content: attr(data-when); display: block; font: 600 12px/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--indigo); margin: 8px 0 8px; }
  .lead { font-size: 17px; }
  .join-form { padding: 22px 18px; }
  .chip { display: none; }
  .puzzle { padding: 14px; transform: none; }
  .foot-in { grid-template-columns: 1fr; }
}
@media (max-width: 980px) { .specs { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 680px) {
  .specs { grid-template-columns: 1fr; }
  .layer-top { margin-inline: 0; }
  .suit { gap: 12px; }
}