:root {
  --bg-cream: #f8f1e8;
  --bg-sand: #efddcf;
  --ink-strong: #43281a;
  --ink-soft: #6b4735;
  --accent-copper: #b7653d;
  --accent-amber: #d89b66;
  --accent-gold: #f3d5af;
  --glass-fill: rgba(255, 250, 244, 0.48);
  --glass-border: rgba(255, 255, 255, 0.64);
  --shadow-soft: 0 22px 56px rgba(117, 63, 34, 0.1);
  --shadow-strong: 0 36px 88px rgba(107, 54, 30, 0.15);
  --radius-xl: 2rem;
  --radius-lg: 1.5rem;
  --content-width: min(1420px, calc(100vw - 3.2rem));
  --font-display: "Fraunces", "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
  --font-body: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink-strong);
  font-family: var(--font-body);
  line-height: 1.68;
  background:
    radial-gradient(circle at 10% 16%, rgba(239, 179, 122, 0.16), transparent 24%),
    radial-gradient(circle at 90% 20%, rgba(212, 137, 102, 0.12), transparent 26%),
    linear-gradient(180deg, #fffaf4 0%, var(--bg-cream) 34%, #f3e6d9 70%, var(--bg-sand) 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

body::before {
  top: -7rem;
  height: 29rem;
  background:
    linear-gradient(180deg, rgba(255, 252, 246, 0.96) 0%, rgba(255, 244, 229, 0.7) 42%, rgba(255, 244, 229, 0) 100%),
    radial-gradient(140% 100% at 50% 0%, rgba(255, 227, 186, 0.68) 0%, rgba(255, 227, 186, 0.26) 50%, rgba(255, 227, 186, 0) 76%);
  filter: blur(28px);
}

body::after {
  inset: auto 4% 5% auto;
  width: 32rem;
  height: 32rem;
  background: radial-gradient(circle, rgba(255, 203, 156, 0.14), transparent 70%);
  filter: blur(24px);
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

svg {
  width: 100%;
  height: 100%;
}

.page-shell {
  position: relative;
  z-index: 1;
  width: var(--content-width);
  margin: 0 auto;
  padding: 1.2rem 0 3.8rem;
}

.glass-panel {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.58), rgba(255, 247, 240, 0.28)),
    var(--glass-fill);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px) saturate(145%);
  -webkit-backdrop-filter: blur(22px) saturate(145%);
}

.section-animate {
  opacity: 0;
  transform: translateY(24px);
  animation: section-rise 0.8s ease forwards;
}

.delay-1 {
  animation-delay: 0.08s;
}

.delay-2 {
  animation-delay: 0.16s;
}

.delay-3 {
  animation-delay: 0.24s;
}

.delay-4 {
  animation-delay: 0.32s;
}

.site-header {
  position: sticky;
  top: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1.2rem;
  margin-bottom: 2rem;
  z-index: 10;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.brand-logo {
  height: 2.35rem;
  width: auto;
  object-fit: contain;
  transition: transform 0.28s ease, filter 0.28s ease;
}

.brand:hover .brand-logo,
.brand:focus-visible .brand-logo {
  transform: translateY(-1px) scale(1.04) rotate(-2deg);
  filter: drop-shadow(0 12px 20px rgba(97, 55, 32, 0.12));
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--ink-soft);
  font-weight: 700;
  padding: 0.78rem 1rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.56);
  color: var(--ink-strong);
  transform: translateY(-1px);
}

.site-nav .nav-cta {
  color: #fffaf4;
  background: linear-gradient(135deg, var(--accent-copper), var(--accent-amber));
  box-shadow: 0 15px 34px rgba(169, 96, 56, 0.24);
}

.github-link-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  flex: 0 0 1rem;
}

.github-link-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.nav-cta,
.button.primary,
.footer-link {
  gap: 0.55rem;
}

.nav-stack {
  display: inline-grid;
  justify-items: center;
  gap: 0.12rem;
  line-height: 1.05;
  position: relative;
}

.nav-label {
  font-size: 0.92rem;
  font-weight: 800;
}

.nav-sub {
  display: inline-grid;
  justify-items: center;
  gap: 0.12rem;
  font-size: 0.68rem;
  color: rgba(107, 71, 53, 0.9);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: none;
}

.nav-sub::before {
  content: "";
  width: 1.35rem;
  height: 1px;
  background: rgba(107, 71, 53, 0.28);
  border-radius: 999px;
}

.nav-toggle {
  display: none;
  width: 2.9rem;
  height: 2.9rem;
  border: 0;
  border-radius: 0.95rem;
  background: rgba(255, 248, 241, 0.72);
  color: var(--ink-strong);
  align-items: center;
  justify-content: center;
  gap: 0.32rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.15rem;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.24s ease;
}

.nav-open .nav-toggle span:first-child {
  transform: translateY(0.16rem) rotate(45deg);
}

.nav-open .nav-toggle span:last-child {
  transform: translateY(-0.16rem) rotate(-45deg);
}

main {
  display: grid;
  gap: 2.6rem;
}

.hero,
.terminal,
.preview,
.sources {
  display: grid;
  gap: 1.45rem;
}

.hero-intro-brand,
.hero-overview,
.terminal-shell,
.preview-shell,
.sources-shell {
  padding: clamp(1.35rem, 2.8vw, 2rem);
}

.eyebrow,
.card-label,
.structure-detail-eyebrow {
  margin: 0;
  color: var(--accent-copper);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.76rem;
  font-weight: 800;
}

.structure-detail-eyebrow {
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: none;
}

.eyebrow-en {
  font-weight: 600;
}

.eyebrow-sep {
  margin: 0 0.28rem;
  opacity: 0.7;
}

.lead-sentence {
  margin: 0.7rem auto 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.4vw, 2.8rem);
  line-height: 1.16;
  text-align: center;
}

.lead-english,
.hero-english,
.section-english,
.source-en,
.hero-metrics small {
  display: block;
  color: var(--ink-soft);
}

.lead-english {
  margin: 0.7rem auto 0;
  max-width: 64ch;
  text-align: center;
}

.hero-wordmark {
  margin: 1.5rem auto 0;
  width: min(100%, 56rem);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 22px 48px rgba(97, 55, 32, 0.12));
  transform:
    perspective(1200px)
    rotateX(var(--logo-tilt-x, 0deg))
    rotateY(var(--logo-tilt-y, 0deg))
    translate3d(var(--logo-shift-x, 0px), var(--logo-shift-y, 0px), 0);
  transition: transform 0.2s ease, filter 0.28s ease;
  will-change: transform;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.8rem;
}

.hero-metrics article {
  padding: 1.1rem;
  border-radius: var(--radius-lg);
  background: rgba(255, 250, 245, 0.44);
  border: 1px solid rgba(255, 255, 255, 0.54);
}

.hero-metrics strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.3rem;
}

.hero-metrics span {
  display: block;
  margin-top: 0.22rem;
  font-weight: 700;
}

.hero-copy h2,
.section-copy h2,
.terminal-notes h3,
.sources-summary strong,
.structure-detail strong {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.04;
  letter-spacing: -0.025em;
}

.hero-copy h2 {
  margin-top: 0.48rem;
  font-size: clamp(1.52rem, 2.7vw, 2.2rem);
}

.section-copy h2 {
  margin-top: 0.45rem;
  font-size: clamp(1.52rem, 2.7vw, 2.2rem);
}

.hero-english {
  margin: 0.82rem 0 0;
  max-width: 60ch;
  font-size: 0.98rem;
}

.section-english {
  margin: 0.55rem 0 0;
  max-width: 66ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.15rem;
  padding: 0.9rem 1.38rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent-copper), var(--accent-amber));
  color: #fffaf4;
  box-shadow: 0 18px 34px rgba(169, 96, 56, 0.24);
}

.button.secondary {
  border: 1px solid rgba(130, 74, 47, 0.14);
  background: rgba(255, 251, 247, 0.56);
  color: var(--ink-strong);
}

.hero-structure {
  margin-top: 1.75rem;
  display: grid;
  gap: 1rem;
  padding: 1rem;
  border-radius: 1.5rem;
  background: rgba(255, 250, 244, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.52);
}

.hero-structure svg {
  overflow: visible;
}

.overview-line {
  fill: none;
  stroke: url(#overviewLine);
  stroke-width: 6;
  stroke-linecap: round;
}

.structure-node-group {
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.structure-node-group:focus,
.structure-node-group:focus-visible {
  outline: none;
}

.overview-node {
  fill: rgba(255, 249, 242, 0.96);
  stroke: rgba(184, 103, 61, 0.26);
  stroke-width: 2;
  transition: fill 0.22s ease, stroke 0.22s ease, filter 0.22s ease;
}

.structure-node-group.is-active .overview-node,
.structure-node-group:hover .overview-node,
.structure-node-group:active .overview-node {
  fill: rgba(243, 213, 175, 0.98);
  stroke: rgba(184, 103, 61, 0.55);
  filter: drop-shadow(0 6px 14px rgba(184, 103, 61, 0.18));
}

.hero-structure text {
  text-anchor: middle;
  font-family: var(--font-body);
  fill: var(--ink-strong);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.012em;
}

.overview-sub,
.overview-box-sub {
  fill: var(--ink-soft);
  font-size: 11px;
  font-weight: 400;
}

.overview-box {
  fill: rgba(255, 249, 242, 0.92);
  stroke: rgba(184, 103, 61, 0.18);
  stroke-width: 1.5;
}

.structure-detail {
  padding: 1rem 1.1rem;
  border-radius: 1.2rem;
  background: rgba(255, 250, 245, 0.54);
  border: 1px solid rgba(255, 255, 255, 0.58);
}

.structure-detail p {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
}

.terminal-shell,
.preview-shell,
.sources-shell {
  display: grid;
  gap: 1.25rem;
  box-shadow: var(--shadow-strong);
}

.terminal-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(18rem, 0.92fr);
  gap: 1.2rem;
  align-items: start;
}

.terminal-player-wrap {
  overflow: hidden;
  border-radius: 1.45rem;
  background: rgba(31, 23, 20, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.terminal-toolbar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.85rem 0.95rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 247, 240, 0.82);
}

.terminal-toolbar span {
  position: relative;
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
  transition: transform 0.22s ease, box-shadow 0.22s ease, opacity 0.22s ease;
}

.terminal-toolbar span::after {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgba(66, 40, 26, 0.9);
  font-size: 0.52rem;
  font-weight: 800;
  line-height: 1;
  opacity: 0;
  transform: scale(0.78);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.terminal-toolbar span:nth-child(1)::after {
  content: "×";
}

.terminal-toolbar span:nth-child(2)::after {
  content: "−";
}

.terminal-toolbar span:nth-child(3)::after {
  content: "+";
}

.terminal-player-wrap.interactive-card:hover .terminal-toolbar span,
.terminal-player-wrap.interactive-card:focus-within .terminal-toolbar span {
  transform: translateY(-1px) scale(1.08);
  box-shadow:
    0 4px 10px rgba(0, 0, 0, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.26);
}

.terminal-player-wrap.interactive-card:hover .terminal-toolbar span::after,
.terminal-player-wrap.interactive-card:focus-within .terminal-toolbar span::after {
  opacity: 1;
  transform: scale(1);
}

.terminal-toolbar span:nth-child(1) {
  background: #ff5f57;
}

.terminal-toolbar span:nth-child(2) {
  background: #febc2e;
}

.terminal-toolbar span:nth-child(3) {
  background: #28c840;
}

.terminal-toolbar strong {
  margin-left: 0.35rem;
  font-size: 0.92rem;
  font-weight: 700;
}

.terminal-player {
  min-height: 28rem;
}

.terminal-player .asciinema-player-wrapper {
  border: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}

.hit-install-label {
  margin: 1.4rem 0 0.55rem;
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}

.hit-install-label-en {
  display: block;
  font-weight: 400;
  opacity: 0.7;
  font-size: 0.8rem;
  margin-top: 0.18rem;
}

.hero-install-terminal {
  max-width: 44rem;
  margin: 0 auto;
  border-radius: 0.9rem;
  overflow: hidden;
  background: #111;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
}

@media (hover: hover) {
  .hero-install-terminal:hover .hit-toolbar {
    border-bottom-color: rgba(255, 255, 255, 0.08);
  }

  .hero-install-terminal:hover .hit-dots span {
    transform: translateY(-1px) scale(1.08);
    box-shadow:
      0 4px 10px rgba(0, 0, 0, 0.28),
      inset 0 1px 0 rgba(255, 255, 255, 0.26);
  }

  .hero-install-terminal:hover .hit-dots span::after {
    opacity: 1;
    transform: scale(1);
  }
}

.hit-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.52rem 0.85rem;
  background: #1c1c1c;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.hit-dots {
  display: flex;
  gap: 0.38rem;
  flex-shrink: 0;
}

.hit-dots span {
  position: relative;
  display: block;
  width: 0.68rem;
  height: 0.68rem;
  border-radius: 50%;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.hit-dots span::after {
  content: "";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgba(30, 18, 10, 0.9);
  font-size: 0.44rem;
  font-weight: 800;
  line-height: 1;
  opacity: 0;
  transform: scale(0.7);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.hit-dots span:nth-child(1)::after { content: "\00D7"; }
.hit-dots span:nth-child(2)::after { content: "\2212"; }
.hit-dots span:nth-child(3)::after { content: "+"; }

.hit-dots span:nth-child(1) { background: #ff5f57; }
.hit-dots span:nth-child(2) { background: #febc2e; }
.hit-dots span:nth-child(3) { background: #28c840; }

.hit-tabs {
  display: flex;
  gap: 0.3rem;
}

.hit-copy {
  display: flex;
  align-items: center;
  gap: 0.28rem;
  margin-left: auto;
  padding: 0.18rem 0.55rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
  flex-shrink: 0;
}

.hit-copy svg {
  width: 0.72rem;
  height: 0.72rem;
  flex-shrink: 0;
}

.hit-copy:hover {
  background: rgba(255, 255, 255, 0.09);
  color: rgba(255, 255, 255, 0.85);
  border-color: rgba(255, 255, 255, 0.26);
}

.hit-copy.is-copied {
  color: #28c840;
  border-color: rgba(40, 200, 64, 0.4);
}

.hit-tab {
  padding: 0.2rem 0.72rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.hit-tab.is-active {
  background: rgba(255, 255, 255, 0.13);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
}

.hit-tab:hover:not(.is-active) {
  background: rgba(255, 255, 255, 0.07);
  color: rgba(255, 255, 255, 0.68);
}

.hit-body {
  padding: 0.9rem 1.1rem;
}

.hit-panel {
  display: none;
  align-items: baseline;
  gap: 0.65rem;
  margin: 0;
  font-family: "SF Mono", "Fira Mono", "Cascadia Code", "Consolas", monospace;
  font-size: 0.84rem;
  line-height: 1.5;
  color: #e2e2e2;
  word-break: break-all;
}

.hit-panel.is-active {
  display: flex;
}

.hit-panel--stack.is-active {
  flex-direction: column;
  gap: 0.45rem;
}

.hit-line {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
}

.hit-prompt {
  color: #28c840;
  font-weight: 700;
  user-select: none;
  flex-shrink: 0;
}

.hit-panel code {
  color: #e2e2e2;
}

.terminal-notes {
  display: grid;
  gap: 1rem;
}

.terminal-notes article {
  padding: 1rem 1.1rem;
  border-radius: 1.25rem;
  background: rgba(255, 250, 245, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.54);
}

.terminal-notes p {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
}

.preview-stage {
  display: grid;
  gap: 1rem;
}

.preview-header,
.preview-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.preview-copy-top {
  flex: 1 1 auto;
  min-height: 2.9rem;
}

.preview-header-spacer {
  opacity: 0;
  pointer-events: none;
}

.preview-actions {
  display: grid;
  justify-items: end;
  gap: 0.65rem;
}

.preview-controls {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.preview-button {
  width: 2.9rem;
  height: 2.9rem;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 249, 243, 0.75);
  color: var(--ink-strong);
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.preview-button:hover,
.preview-button:focus-visible {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.86);
}

.preview-timer {
  width: 8.5rem;
  height: 0.35rem;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(132, 82, 59, 0.12);
}

.preview-timer-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(135deg, var(--accent-copper), var(--accent-amber));
}

.preview-timer-bar.is-running {
  animation: preview-timer-fill var(--preview-duration, 5.2s) linear forwards;
}

.preview-viewport {
  overflow: hidden;
  border-radius: 1.5rem;
}

.preview-track {
  display: flex;
  transition: transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.preview-slide {
  min-width: 100%;
  margin: 0;
}

.preview-frame {
  height: clamp(24rem, 42vw, 34rem);
  overflow: hidden;
  border-radius: 1.45rem;
  background: rgba(255, 248, 241, 0.44);
}

.preview-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: var(--preview-position, center);
}

.preview-copy {
  max-width: 38rem;
  padding: 1rem 1.1rem;
  border-radius: 1.25rem;
  background: rgba(255, 250, 245, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.54);
}

.preview-copy strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.24rem;
}

.preview-copy p {
  margin: 0.32rem 0 0;
  color: var(--ink-soft);
}

.preview-dots {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.preview-dot {
  width: 0.82rem;
  height: 0.82rem;
  border: 0;
  padding: 0;
  border-radius: 999px;
  background: rgba(132, 82, 59, 0.18);
  cursor: pointer;
  transition: width 0.22s ease, background-color 0.22s ease, transform 0.22s ease;
}

.preview-dot.is-active {
  width: 2rem;
  background: linear-gradient(135deg, var(--accent-copper), var(--accent-amber));
}

.preview-dot:hover,
.preview-dot:focus-visible {
  transform: translateY(-1px);
}

.sources-summary,
.source-grid {
  display: grid;
  gap: 1.1rem;
}

.sources-summary {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sources-summary article {
  padding: 1rem 1.1rem;
  border-radius: 1.25rem;
  background: rgba(255, 250, 245, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.54);
}

.sources-summary p {
  margin: 0.32rem 0 0;
  color: var(--ink-soft);
}

.source-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.source-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: clamp(1.15rem, 2.2vw, 1.5rem);
  border-radius: 1.45rem;
  background: rgba(255, 250, 245, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.54);
}

.source-card strong {
  display: block;
  font-size: 1rem;
}

.source-card p {
  margin: 0.32rem 0 0;
  color: var(--ink-soft);
}

.source-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.72rem;
}

.source-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 1.95rem;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  background: rgba(240, 226, 214, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.56);
  color: #43261a;
  font-size: 0.82rem;
  font-weight: 700;
}

.source-en {
  margin-top: 0.12rem;
  font-size: 0.88rem;
  color: #5f3d2d;
  font-weight: 700;
}

.source-icon {
  flex: 0 0 3rem;
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 1rem;
  color: #fffaf4;
  font-size: 0.95rem;
  font-weight: 800;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
  transition: transform 0.22s ease, box-shadow 0.22s ease, filter 0.22s ease;
}

.source-icon svg {
  width: 1.68rem;
  height: 1.68rem;
}

.source-icon .cut {
  fill: #fffaf4;
}

.source-icon .stroke {
  fill: none;
  stroke: #fffaf4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.4;
}

.source-icon.zhihu {
  background: linear-gradient(135deg, #1560ff, #3c86ff);
}

.source-icon.reddit {
  background: linear-gradient(135deg, #ff7846, #ff4500);
}

.source-icon.reddit svg {
  fill: none;
  stroke: #fffaf4;
  stroke-width: 1.45;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.source-icon.reddit .cut {
  fill: #fffaf4;
  stroke: none;
}

.source-icon.hackernews {
  background: linear-gradient(135deg, #ff8a2b, #f26522);
  font-family: var(--font-display);
  font-size: 1.4rem;
}

.source-icon.xmark {
  background: linear-gradient(135deg, #111111, #2a2a2a);
}

.source-icon.xmark svg {
  fill: #fffaf4;
}

.source-icon.wechat {
  background: linear-gradient(135deg, #16b95f, #0b9449);
}

.source-icon.wechat svg {
  fill: #fffaf4;
}

.source-icon.wechat .cut {
  fill: #0b9449;
}

.source-icon.weibo {
  background: linear-gradient(135deg, #ff7b35, #df4130);
}

.source-icon.weibo svg {
  fill: none;
  stroke: #fffaf4;
  stroke-width: 1.35;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.source-icon.weibo .cut {
  fill: #fffaf4;
  stroke: none;
}

.source-icon.xhs {
  background: linear-gradient(135deg, #ff6660, #ff3a3a);
  font-size: 0.95rem;
}

.source-icon.html {
  background: linear-gradient(135deg, #7a5a49, #5a3e31);
}

.source-icon.html svg {
  fill: none;
  stroke: #fffaf4;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.interactive-card {
  transition:
    transform 0.26s ease,
    box-shadow 0.26s ease,
    border-color 0.26s ease,
    background-color 0.26s ease;
}

@media (hover: hover) {
  .interactive-card:hover,
  .interactive-card:focus-within {
    transform: translateY(-6px);
    box-shadow: 0 24px 54px rgba(107, 54, 30, 0.14);
    border-color: rgba(184, 103, 61, 0.22);
    background: rgba(255, 251, 247, 0.62);
  }

  .source-card:hover .source-icon,
  .source-card:focus-within .source-icon {
    transform: translateY(-4px) scale(1.06);
    box-shadow:
      0 12px 22px rgba(107, 54, 30, 0.14),
      inset 0 1px 0 rgba(255, 255, 255, 0.26);
    filter: saturate(1.04);
  }

  .terminal-player-wrap.interactive-card:hover,
  .terminal-player-wrap.interactive-card:focus-within {
    transform: none;
    box-shadow:
      0 18px 36px rgba(20, 14, 12, 0.18),
      inset 0 1px 0 rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
    background: rgba(31, 23, 20, 0.92);
  }

  .terminal-player-wrap.interactive-card:hover .terminal-toolbar,
  .terminal-player-wrap.interactive-card:focus-within .terminal-toolbar {
    border-bottom-color: rgba(255, 255, 255, 0.08);
  }

  .source-tags span:hover,
  .source-tags span:focus-visible {
    transform: none;
    background: rgba(212, 175, 149, 0.96);
    border-color: rgba(169, 96, 56, 0.22);
    box-shadow: 0 10px 18px rgba(107, 54, 30, 0.08);
  }

}

.site-footer {
  padding: 1.35rem 0.2rem 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  background: rgba(255, 250, 245, 0.54);
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: var(--ink-strong);
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 22px rgba(107, 54, 30, 0.12);
  background: rgba(255, 252, 248, 0.72);
}

@keyframes section-rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes preview-timer-fill {
  from {
    transform: scaleX(0);
  }

  to {
    transform: scaleX(1);
  }
}

@media (max-width: 1180px) {
  .terminal-layout,
  .sources-summary,
  .source-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .terminal-player-wrap {
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  .page-shell {
    width: min(100vw - 1.2rem, 100%);
    padding-top: 0.8rem;
  }

  .site-header {
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .nav-toggle {
    margin-left: auto;
  }

  .site-nav {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.4rem;
  }

  .js .nav-toggle {
    display: inline-flex;
  }

  .js .site-nav {
    display: none;
  }

  .js.nav-open .site-nav {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    text-align: center;
  }

  .hero-metrics,
  .terminal-layout,
  .sources-summary,
  .source-grid {
    grid-template-columns: 1fr;
  }

  .preview-header,
  .preview-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .preview-actions {
    justify-items: start;
  }
}

@media (max-width: 560px) {
  .page-shell {
    width: min(100vw - 0.7rem, 100%);
  }

  .brand-logo {
    height: 1.95rem;
  }

  .button {
    width: 100%;
  }

  .site-footer-inner {
    flex-direction: column;
  }

  .preview-frame {
    height: 18rem;
  }
}

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

  .section-animate,
  .hero-wordmark,
  .interactive-card,
  .preview-track,
  .button,
  .site-nav a,
  .preview-button,
  .preview-dot,
  .brand-logo,
  .structure-node-group,
  .overview-node,
  .preview-timer-bar {
    animation: none !important;
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
}