:root {
  color-scheme: light;
  --ink: #15182a;
  --muted: #6b7280;
  --line: #e8e7e3;
  --paper: #f4f3ef;
  --card: #ffffff;
  --blue: #3b82f6;
  --orange: #f97316;
  --green: #10b981;
  --red: #ef4444;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

main {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.intro {
  margin-bottom: 20px;
}

.intro-2 {
  margin-top: 56px;
}

.title {
  margin: 0 0 8px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h2 {
  margin: 0 0 10px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.1;
}

.lede {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(21, 24, 42, 0.04);
}

.card-apps::before {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--blue) 25%, var(--orange) 25%, var(--orange) 50%, var(--green) 50%, var(--green) 75%, var(--red) 75%, var(--red) 100%);
  content: "";
}

.row {
  border-top: 1px solid var(--line);
}

.row:first-child {
  border-top: 0;
}

.row-trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 56px;
  padding: 14px 18px;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  font: inherit;
}

.row-title {
  flex: 1;
  font-weight: 600;
  font-size: 16px;
}

.row-meta {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  white-space: nowrap;
}

.row-chevron {
  color: var(--muted);
  font-size: 14px;
  transition: transform 180ms ease;
}

.row.is-open .row-chevron {
  transform: rotate(90deg);
}

.row-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 220ms ease;
}

.row.is-open .row-panel {
  grid-template-rows: 1fr;
}

.row-inner {
  min-height: 0;
  overflow: hidden;
}

.row-body {
  padding: 0 18px 16px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.row-body p { margin: 0 0 10px; }

.row-body a {
  display: inline-block;
  margin-top: 4px;
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.row-body .remove {
  margin-left: 12px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.row-body .remove:hover { color: var(--red); }

.feed-form {
  display: flex;
  gap: 8px;
  margin: 0 0 6px;
}

.feed-form input {
  flex: 1;
  min-width: 0;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  color: var(--ink);
  font: inherit;
}

.feed-form button {
  height: 44px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  border-radius: 10px;
  background: var(--ink);
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
}

.feed-form input:focus,
.feed-form button:focus-visible,
.row-trigger:focus-visible,
a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.form-status {
  min-height: 18px;
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
}

footer {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

footer a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }

@media (min-width: 700px) {
  main { padding: 64px 24px 80px; }
  .title { font-size: 44px; }
  h2 { font-size: 30px; }
  .row-trigger { min-height: 60px; padding: 16px 22px; }
  .row-body { padding: 0 22px 18px; }
}