:root {
  --paper: #e8eef4;
  --ink: #2a3540;
  --muted: #5c6b78;
  --card: #fffcf7;
  --line: #d5dee6;
  --accent: #7eb4d4;
  --accent-dark: #5a92b3;
  --ok: #4a8f7a;
}

* { box-sizing: border-box; }
html { color-scheme: light; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Avenir Next", "Nunito", "Segoe UI", ui-rounded, system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse at 20% 6%, rgba(255, 255, 255, 0.7), transparent 22rem),
    radial-gradient(ellipse at 88% 0%, rgba(170, 205, 225, 0.45), transparent 24rem),
    linear-gradient(180deg, #dce6ef 0%, #e8eef4 55%, #f2eae3 100%);
}
a { color: var(--accent-dark); }
button, input, textarea, select {
  font: inherit;
  color: inherit;
}

.site {
  border-bottom: 1px solid var(--line);
}
.site .inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: min(42rem, calc(100% - 2.4rem));
  margin: 0 auto;
  padding: 1.1rem 0;
}
.mark {
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
}
.site nav {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  font-size: 0.92rem;
}
.who { color: var(--muted); }
.inline { display: inline; margin: 0; }
.lang {
  position: relative;
  font-size: 0.85rem;
}
.lang summary {
  cursor: pointer;
  list-style: none;
  color: var(--accent-dark);
}
.lang summary::-webkit-details-marker { display: none; }
.lang ul {
  position: absolute;
  right: 0;
  z-index: 5;
  margin: 0.35rem 0 0;
  padding: 0.4rem 0;
  list-style: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  box-shadow: 0 10px 24px rgba(42, 80, 110, 0.12);
  min-width: 11rem;
  max-height: 18rem;
  overflow: auto;
}
[dir="rtl"] .lang ul { right: auto; left: 0; }
.lang li { margin: 0; }
.lang a, .lang span {
  display: block;
  padding: 0.28rem 0.75rem;
  text-decoration: none;
  color: var(--ink);
}
.lang a:hover { background: var(--paper); }
.lang span { color: var(--muted); }
button.linkish, .tiny {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

main {
  width: min(42rem, calc(100% - 2.4rem));
  margin: 0 auto;
  padding: 2.2rem 0 4rem;
}

body.landing .site .inner,
body.landing main {
  width: min(54rem, calc(100% - 2.4rem));
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 15.5rem;
  gap: 1.6rem 2rem;
  align-items: center;
}
.hero .copy { min-width: 0; }
.mascot {
  width: 15.5rem;
  height: 15.5rem;
  object-fit: cover;
  border-radius: 50%;
  justify-self: end;
  box-shadow:
    0 0 0 6px rgba(255, 255, 255, 0.7),
    0 18px 40px rgba(42, 143, 163, 0.18);
}

.hero h1 {
  font-size: clamp(1.85rem, 4vw, 2.7rem);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0.35rem 0 0.9rem;
}
.kicker {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-dark);
  margin: 0;
}
.lead { font-size: 1.05rem; line-height: 1.55; color: var(--muted); }
.cta { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; margin: 1.4rem 0 0; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 1.15rem;
  min-height: 2.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
}
.btn.primary {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
}
.btn.ghost { background: transparent; }
.btn.tg {
  background: #fff;
  border-color: var(--accent-dark);
  color: var(--ink);
}
.btn.tg svg {
  width: 1.15rem;
  height: 1.15rem;
  flex-shrink: 0;
}

.curve-block {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1.15rem;
  padding: 1.15rem 1.25rem 1.3rem;
  margin: 2.2rem 0;
  box-shadow: 0 12px 28px rgba(42, 143, 160, 0.08);
}
.curve-block h2 {
  margin: 0 0 0.3rem;
  font-size: 1.15rem;
}
.curve-hint {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}
.curve {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.15rem;
  padding: 0;
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
}
.curve li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}
.curve li + li::before {
  content: "→";
  color: var(--accent-dark);
  font-weight: 700;
}
[dir="rtl"] .curve li + li::before {
  content: "←";
}
.curve li span {
  display: inline-block;
  border: 2px solid var(--accent-dark);
  background: #fff;
  color: var(--ink);
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.2rem;
  margin: 2rem 0;
}
.steps article {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 1.1rem 1.2rem 1.3rem;
  border-radius: 1.15rem;
  box-shadow: 0 12px 28px rgba(42, 143, 160, 0.08);
}
.steps h2 { margin: 0 0 0.4rem; font-size: 1.08rem; }
.steps p { margin: 0; color: var(--muted); }

.soon, .hint, .empty { color: var(--muted); }
.dev {
  margin-top: 3rem;
  padding: 1rem 0;
  border-top: 1px dashed var(--line);
}
.flash {
  background: #dff3ef;
  color: var(--ok);
  padding: 0.6rem 0.8rem;
  border-radius: 10px;
}
.flash.bad { background: #fde7d8; color: #b45a2a; }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.toolbar h1 { margin: 0; }
.deck { list-style: none; padding: 0; margin: 1.4rem 0 0; display: grid; gap: 0.65rem; }
.card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: stretch;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: 0 8px 20px rgba(42, 143, 160, 0.07);
}
.card.paused { opacity: 0.62; }
.card .body {
  display: grid;
  grid-template-columns: 2.4rem 1fr auto;
  gap: 0.8rem;
  align-items: center;
  padding: 0.85rem 1rem;
  text-decoration: none;
  color: inherit;
}
.card .num {
  color: var(--accent-dark);
  font-variant-numeric: tabular-nums;
}
.card .meta {
  font-size: 0.82rem;
  color: var(--muted);
  white-space: nowrap;
}
.card form { display: flex; align-items: center; padding: 0 0.9rem 0 0; }
.tiny { font-size: 0.82rem; }

.back a { font-size: 0.92rem; }
.stack { display: grid; gap: 1rem; }
fieldset {
  border: 1px solid var(--line);
  background: var(--card);
  padding: 1rem;
  border-radius: 1rem;
}
legend { padding: 0 0.4rem; }
label { display: grid; gap: 0.35rem; font-size: 0.92rem; }
.check { display: flex; gap: 0.5rem; align-items: center; }
textarea, input[type="text"], input[type="file"], input:not([type]) {
  width: 100%;
  border: 1px solid var(--line);
  background: #f7fcff;
  padding: 0.45rem 0.55rem;
}
.preview-media img, .preview-media video {
  max-width: 100%;
  max-height: 16rem;
  border: 1px solid var(--line);
}
.row { display: flex; gap: 0.7rem; }
.danger { margin-top: 2rem; }

@media (max-width: 720px) {
  .hero {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
  .cta { justify-content: center; }
  .curve { justify-content: center; }
  .mascot { justify-self: center; width: 12rem; height: 12rem; }
}
@media (max-width: 640px) {
  .card .body { grid-template-columns: 2rem 1fr; }
  .card .meta { grid-column: 2; }
}