:root {
  --bg: #f6f9ff;
  --bg-soft: #eef5ff;
  --panel: rgba(255,255,255,0.9);
  --panel-solid: #ffffff;
  --surface: #ffffff;
  --surface-2: #eff5ff;
  --surface-3: #e7f0ff;
  --line: rgba(15, 23, 42, 0.08);
  --line-strong: rgba(15, 23, 42, 0.14);
  --text: #162338;
  --muted: #63738c;
  --primary: #2563eb;
  --primary-2: #0ea5e9;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --shadow-sm: 0 10px 30px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 24px 70px rgba(15, 23, 42, 0.08);
  --radius-sm: 14px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --max: 1240px;
  --hero-glow-1: rgba(37, 99, 235, 0.10);
  --hero-glow-2: rgba(14, 165, 233, 0.10);
  --progress-bg: rgba(15,23,42,0.08);
  --wave-bg: linear-gradient(180deg, #f9fbff, #eef5ff);
  --wave-grid: rgba(37,99,235,0.08);
  --lamp-shell: radial-gradient(circle at center, rgba(15,23,42,0.04), rgba(15,23,42,0.02));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  /* font-family: Inter, Arial, sans-serif; */
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 10%, var(--hero-glow-1), transparent 22%),
    radial-gradient(circle at 92% 0%, var(--hero-glow-2), transparent 20%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
}

a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.container { width: min(100% - 24px, var(--max)); margin: 0 auto; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: #fff;
  color: #000;
  padding: 10px 14px;
  z-index: 999;
  border-radius: 12px;
}
.skip-link:focus { left: 12px; top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.2px;
  flex-shrink: 0;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #04111d;
  font-weight: 900;
  box-shadow: 0 16px 30px color-mix(in srgb, var(--primary) 24%, transparent);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel-solid) 90%, transparent);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.site-menu {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.menu-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.menu-list > li { position: relative; }

.menu-list > li > a,
.submenu-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  border-radius: 14px;
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: .18s ease;
}

.menu-list > li > a:hover,
.submenu-toggle:hover,
.submenu-toggle[aria-expanded="true"] {
  background: color-mix(in srgb, var(--panel-solid) 94%, transparent);
  border-color: var(--line);
}

.submenu-toggle::after {
  content: "▾";
  font-size: 12px;
  line-height: 1;
}

.submenu {
  list-style: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 220px;
  margin: 0;
  padding: 10px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel-solid) 98%, transparent);
  box-shadow: var(--shadow-lg);
  display: none;
  z-index: 120;
}

.has-submenu.open > .submenu { display: block; }
.submenu li + li { margin-top: 6px; }

.submenu a {
  display: block;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  transition: .18s ease;
}

.submenu a:hover { background: var(--surface-2); }

.hero {
  padding: 60px 0 24px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--primary-2);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .8px;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--panel-solid) 84%, transparent);
}

h1 {
  margin: 18px auto 14px;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: -1.6px;
  max-width: 30ch;
}

.hero p {
  margin: 0 auto 24px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
  max-width: 72ch;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel-solid) 88%, transparent);
  color: var(--text);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: .18s ease;
}
.btn:hover { transform: translateY(-1px); border-color: var(--line-strong); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #04111d;
  border-color: transparent;
  box-shadow: 0 16px 34px color-mix(in srgb, var(--primary) 22%, transparent);
}
.btn-success {
  background: linear-gradient(135deg, var(--success), #4ade80);
  color: #07140b;
  border-color: transparent;
}
.btn-danger {
  background: linear-gradient(135deg, var(--danger), #f87171);
  color: #180606;
  border-color: transparent;
}

.hero-stats,
.settings-grid,
.toggle-grid,
.feature-grid,
.links-grid,
.blog-grid {
  display: grid;
  gap: 14px;
}

.hero-stats { grid-template-columns: repeat(3, minmax(0,1fr)); text-align: left; }
.settings-grid { grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
.toggle-grid { grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; }
.feature-grid,
.links-grid,
.blog-grid { grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }

.stat-card,
.main-card,
.sub-card,
.feature-card,
.blog-card,
.link-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
}

.stat-card {
  padding: 18px;
  border-radius: 20px;
}
.stat-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 20px;
}
.stat-card span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.tool-wrap,
.content-links,
.features,
.blog-section {
  padding: 14px 0 38px;
}

.main-card {
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-lg);
}

.tool-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.tool-title {
  margin: 0;
  font-size: 24px;
  line-height: 1.2;
}

.tool-desc,
.section-copy,
.section-head p,
.feature-card p,
.blog-card p,
.link-card p {
  color: var(--muted);
}

.tool-desc {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.6;
  max-width: 74ch;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: color-mix(in srgb, var(--success) 75%, white 25%);
  border: 1px solid color-mix(in srgb, var(--success) 22%, transparent);
  background: color-mix(in srgb, var(--success) 10%, transparent);
}

.flow-layout {
  display: grid;
  gap: 16px;
}

.sub-card {
  border-radius: 22px;
  padding: 16px;
}

.section-title {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.3;
}

.section-copy {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.65;
  max-width: 78ch;
}

.range-wrap,
.toggle-row,
.status-box,
.key-pad {
  background: color-mix(in srgb, var(--panel-solid) 90%, transparent);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px;
}

.range-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 13px;
}

.range-top label {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .45px;
}

input[type="range"] {
  width: 100%;
  appearance: none;
  height: 6px;
  border-radius: 999px;
  background: var(--progress-bg);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border: 0;
  cursor: pointer;
}

.toggle-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin: 0;
}

.toggle-row span {
  font-size: 14px;
  font-weight: 700;
}

.switch {
  position: relative;
  width: 52px;
  height: 30px;
  display: inline-block;
}
.switch input { opacity: 0; width: 0; height: 0; }

.slider {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--progress-bg);
  transition: .2s ease;
  cursor: pointer;
}
.slider::before {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  left: 4px;
  top: 4px;
  border-radius: 50%;
  background: #fff;
  transition: .2s ease;
}
.switch input:checked + .slider {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
}
.switch input:checked + .slider::before {
  transform: translateX(22px);
}

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

.preset-btn {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel-solid) 90%, transparent);
  color: var(--text);
  padding: 12px;
  border-radius: 14px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  text-align: left;
  transition: .18s ease;
}
.preset-btn:hover { transform: translateY(-1px); border-color: var(--line-strong); }
.preset-btn small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}

.tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.tab-btn {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel-solid) 90%, transparent);
  color: var(--text);
  padding: 12px 16px;
  border-radius: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: .2s ease;
}
.tab-btn[aria-selected="true"] {
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 20%, transparent), color-mix(in srgb, var(--primary-2) 14%, transparent));
  border-color: color-mix(in srgb, var(--primary) 38%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--primary) 14%, transparent);
}
.tabpanel[hidden] { display: none; }

.two-col,
.signal-grid,
.wave-grid,
.keyer-grid,
.key-assign-grid {
  display: grid;
  gap: 16px;
}

.two-col { grid-template-columns: 1fr 1fr; }
.signal-grid,
.wave-grid,
.keyer-grid { grid-template-columns: 220px 1fr; align-items: center; }
.key-assign-grid { grid-template-columns: 1fr 1fr; margin-top: 12px; }

.field-label {
  display: inline-flex;
  margin-bottom: 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .2px;
}

textarea,
.text-input {
  width: 100%;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel-solid) 96%, transparent);
  color: var(--text);
  padding: 16px;
  font-size: 15px;
  line-height: 1.7;
  outline: none;
  transition: .2s ease;
}

textarea {
  min-height: 230px;
  resize: vertical;
}

textarea::placeholder,
.text-input::placeholder { color: var(--muted); }

textarea:focus,
.text-input:focus {
  border-color: color-mix(in srgb, var(--primary) 60%, transparent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 14%, transparent);
}

textarea.is-invalid,
.text-input.is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 16%, transparent);
}

.toolbar,
.transport-grid,
.output-actions,
.keyer-toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.toolbar,
.output-actions,
.keyer-toolbar { margin-top: 14px; }

.info-inline,
.status-text,
.progress-meta,
.status-box,
.footer-brand p,
.footer-col li,
.footer-bottom {
  font-size: 14px;
  line-height: 1.7;
}

.info-inline,
.status-text,
.progress-meta,
.status-box { color: var(--muted); }

.progress-track {
  width: 100%;
  height: 14px;
  border-radius: 999px;
  background: var(--progress-bg);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--primary-2), var(--success));
  transition: width .12s linear;
  position: relative;
}
.progress-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.4), transparent);
  transform: translateX(-100%);
  animation: shimmer 1.6s linear infinite;
  opacity: .7;
}

@keyframes shimmer { to { transform: translateX(100%); } }

.progress-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.lamp-box {
  min-height: 200px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: var(--lamp-shell);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.lamp {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff5bc, #f59e0b 40%, #5b3410 80%);
  opacity: .22;
  box-shadow: 0 0 0 rgba(245,158,11,0);
  transition: .08s linear;
}
.lamp.active {
  opacity: 1;
  box-shadow: 0 0 28px rgba(245,158,11,.82), 0 0 84px rgba(245,158,11,.3);
}

.wave-panel {
  min-height: 220px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: var(--wave-bg);
  overflow: hidden;
  position: relative;
}
.wave-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to right, var(--wave-grid) 1px, transparent 1px) 0 0 / 32px 100%,
    linear-gradient(to bottom, var(--wave-grid) 1px, transparent 1px) 0 0 / 100% 32px;
  pointer-events: none;
}

canvas {
  display: block;
  width: 100%;
  height: 220px;
}

.status-box strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
}

.error-box {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent);
  background: color-mix(in srgb, var(--danger) 10%, transparent);
  color: color-mix(in srgb, var(--danger) 72%, white 28%);
  font-size: 14px;
  line-height: 1.55;
}
.error-box ul { margin: 0; padding-left: 18px; }

.status-success { color: color-mix(in srgb, var(--success) 76%, white 24%); }
.status-error { color: color-mix(in srgb, var(--danger) 70%, white 30%); }

.key-pad {
  min-height: 150px;
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  transition: transform .12s ease, border-color .12s ease, background .12s ease;
}
.key-pad:hover { transform: translateY(-1px); border-color: var(--line-strong); }
.key-pad.active {
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 18%, transparent), color-mix(in srgb, var(--primary-2) 12%, transparent));
  border-color: color-mix(in srgb, var(--primary) 38%, transparent);
}
.key-pad strong { font-size: 18px; }
.key-pad span { color: var(--muted); font-size: 13px; line-height: 1.5; }

.section-head {
  text-align: center;
  margin-bottom: 20px;
}
.section-head h2 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.08;
}
.section-head p {
  margin: 0 auto;
  max-width: 72ch;
}

.feature-card,
.blog-card,
.link-card {
  border-radius: 22px;
  padding: 20px;
}
.feature-card h3,
.blog-card h3,
.link-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.3;
}
.feature-card p,
.blog-card p,
.link-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
}

.link-card a,
.blog-card a {
  display: inline-flex;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
}

.site-footer {
  padding: 40px 0 26px;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel-solid) 78%, transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.footer-brand h3,
.footer-col h4 {
  margin: 0 0 12px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li + li {
  margin-top: 8px;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding-top: 18px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.image-compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.preview-card {
  display: grid;
  gap: 10px;
}

.image-preview-shell {
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,.72), rgba(255,255,255,.92));
  min-height: 320px;
}

.image-preview-shell canvas {
  display: block;
  width: 100%;
  height: auto;
}

.hero-word-page .container {
  max-width: 860px;
}

.morse-word-highlight {
  display: grid;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,.86), rgba(255,255,255,.96));
  margin-top: 16px;
}

.morse-word-label {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
}

.morse-word-code {
  font-size: clamp(1.2rem, 1rem + 1.8vw, 2.2rem);
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--heading);
  word-break: break-word;
}

.word-utility-row {
  margin-top: 18px;
}

.morse-letter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
}

.morse-letter-card {
  display: grid;
  gap: 8px;
  padding: 18px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.72);
}

.morse-letter-char {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

.morse-letter-symbol {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--heading);
  letter-spacing: .08em;
}

.related-link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.related-link-card {
  display: grid;
  gap: 6px;
  padding: 18px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.68);
  text-decoration: none;
  color: inherit;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.related-link-card:hover {
  transform: translateY(-2px);
  border-color: rgba(37, 99, 235, .28);
  box-shadow: 0 14px 30px rgba(15, 23, 42, .08);
}

.related-link-card span {
  color: var(--muted);
  font-size: 14px;
}

.word-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.word-hub-card {
  display: grid;
  gap: 18px;
  padding: 22px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.96));
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
}

.word-hub-top {
  display: grid;
  gap: 10px;
}

.word-hub-top h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--heading);
}

.word-hub-top p {
  margin: 0;
  color: var(--muted);
}

.word-hub-code {
  display: grid;
  gap: 8px;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(248, 250, 252, 0.9);
}

.word-hub-label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}

.word-hub-code code {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--heading);
  word-break: break-word;
}

.word-hub-actions {
  display: flex;
  justify-content: flex-start;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.blog-card {
  display: grid;
  gap: 18px;
  padding: 22px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.96));
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
}

.blog-card-top {
  display: grid;
  gap: 10px;
}

.blog-card-top h3 {
  margin: 0;
  font-size: 1.22rem;
  color: var(--heading);
}

.blog-card-top p {
  margin: 0;
  color: var(--muted);
}

.blog-card-actions {
  display: flex;
  justify-content: flex-start;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, .8fr);
  gap: 24px;
  align-items: start;
}

.article-card {
  padding: 24px;
}

.article-section + .article-section {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.article-section h2 {
  margin: 0 0 12px;
  font-size: 1.4rem;
  color: var(--heading);
}

.article-section p {
  margin: 0 0 14px;
  color: var(--text);
  line-height: 1.8;
}

.article-side-card {
  position: sticky;
  top: 100px;
}

@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-side-card {
    position: static;
  }
}

@media (max-width: 768px) {
  .word-hub-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .morse-word-code {
    letter-spacing: .05em;
  }
}

@media (max-width: 1024px) {
  .image-compare-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1080px) {
  .settings-grid,
  .toggle-grid,
  .two-col,
  .signal-grid,
  .wave-grid,
  .keyer-grid,
  .feature-grid,
  .links-grid,
  .blog-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 980px) {
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    margin-left: 0;
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--panel-solid) 98%, transparent);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    padding: 12px;
  }

  .site-menu.open { display: block; }

  .menu-list {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .menu-list > li > a,
  .submenu-toggle {
    width: 100%;
    justify-content: space-between;
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--panel-solid) 94%, transparent);
  }

  .submenu {
    position: static;
    min-width: 100%;
    margin-top: 8px;
    box-shadow: none;
    border-radius: 14px;
    background: var(--surface-2);
  }
}

@media (max-width: 768px) {
  .hero { padding-top: 34px; }
  .hero-actions,
  .toolbar,
  .transport-grid,
  .output-actions,
  .keyer-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-stats,
  .preset-grid,
  .key-assign-grid {
    grid-template-columns: 1fr;
  }
  .btn,
  .tab-btn,
  .preset-btn {
    width: 100%;
  }
  textarea { min-height: 180px; }
}

.section {
  padding: 72px 0;
}

.section-soft {
  padding: 72px 0;
}

@media (max-width: 768px) {
  .section,
  .section-soft {
    padding: 48px 0;
  }
}

.simple-content-block {
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.simple-content-block h2 {
  margin: 10px 0 14px;
  color: var(--heading);
}

.simple-content-block p {
  margin: 0 0 16px;
  line-height: 1.8;
  color: var(--text);
}

.simple-content-block p:last-child {
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .simple-content-block {
    padding: 20px;
    border-radius: 18px;
  }
}