:root {
  color-scheme: dark;
  --bg: #08090b;
  --panel: #101316;
  --panel-strong: #151a1d;
  --line: rgba(63, 255, 122, 0.26);
  --line-soft: rgba(171, 232, 255, 0.16);
  --text: #e7f8ea;
  --muted: #9cb6a4;
  --green: #32ff66;
  --green-soft: rgba(50, 255, 102, 0.12);
  --amber: #f4a52c;
  --amber-dark: #3a2510;
  --cyan: #6ee7ff;
  --rose: #ff6b8a;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
  --page: min(1180px, calc(100% - 32px));
  --mono: ui-monospace, "SFMono-Regular", "SF Mono", "Cascadia Code", "JetBrains Mono", "Fira Code", Menlo, Consolas, "PingFang SC", "Microsoft YaHei", monospace;
  --sans: var(--mono);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(rgba(50, 255, 102, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(50, 255, 102, 0.03) 1px, transparent 1px),
    var(--bg);
  background-size: 42px 42px;
  color: var(--text);
  font-family: var(--sans);
  font-variant-ligatures: none;
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.025) 0, rgba(255, 255, 255, 0.025) 1px, transparent 1px, transparent 4px),
    linear-gradient(90deg, rgba(50, 255, 102, 0.12), transparent 28%, transparent 72%, rgba(110, 231, 255, 0.08)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 42%);
  opacity: 0.65;
}

.code-stream {
  position: fixed;
  inset: 70px 0 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  contain: paint;
}

.code-stream::before,
.code-stream::after {
  position: absolute;
  top: 0;
  bottom: 0;
  width: min(24vw, 320px);
  content: "";
}

.code-stream::before {
  left: 0;
  background: linear-gradient(90deg, rgba(50, 255, 102, 0.05), transparent);
}

.code-stream::after {
  right: 0;
  background: linear-gradient(270deg, rgba(110, 231, 255, 0.04), transparent);
}

.code-stream span {
  position: absolute;
  top: var(--y);
  left: 50%;
  display: block;
  color: var(--green);
  font-family: var(--mono);
  font-size: clamp(0.66rem, 0.78vw, 0.96rem);
  font-weight: 900;
  line-height: 1;
  opacity: 0;
  text-shadow: 0 0 12px rgba(50, 255, 102, 0.42);
  text-transform: uppercase;
  white-space: nowrap;
  animation: code-drift var(--dur) linear infinite;
  animation-delay: var(--delay);
  will-change: opacity, transform, filter;
}

.code-stream .drift-left {
  color: var(--green);
}

.code-stream .drift-right {
  color: var(--cyan);
}

@keyframes code-drift {
  0% {
    opacity: 0;
    filter: blur(2px);
    transform: translate3d(-50%, 0, 0) scale(0.84);
  }

  16% {
    opacity: 0.03;
    filter: blur(0.8px);
  }

  38% {
    opacity: 0.1;
    filter: blur(0);
  }

  72% {
    opacity: 0.1;
    filter: blur(0);
  }

  88% {
    opacity: 0.05;
    filter: blur(0.7px);
  }

  100% {
    opacity: 0;
    filter: blur(2px);
    transform: translate3d(calc(-50% + var(--dx)), var(--dy), 0) scale(var(--scale));
  }
}

.site-header,
main,
.site-footer,
.top-button {
  position: relative;
  z-index: 1;
}

.top-button {
  position: fixed;
  right: clamp(16px, 2vw, 28px);
  bottom: 92px;
  z-index: 9;
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border: 1px solid rgba(50, 255, 102, 0.5);
  background:
    linear-gradient(180deg, rgba(50, 255, 102, 0.1), rgba(255, 255, 255, 0.02)),
    rgba(8, 10, 11, 0.9);
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 900;
  text-decoration: none;
  box-shadow:
    0 14px 32px rgba(0, 0, 0, 0.42),
    inset 0 0 0 1px rgba(110, 231, 255, 0.1);
}

.top-button:hover {
  border-color: var(--green);
  background:
    linear-gradient(180deg, rgba(50, 255, 102, 0.18), rgba(255, 255, 255, 0.04)),
    rgba(8, 10, 11, 0.96);
}

a {
  color: inherit;
}

code,
pre,
textarea,
select {
  font-family: var(--mono);
}

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

button,
select,
textarea,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 20;
  transform: translateY(-160%);
  padding: 10px 14px;
  background: var(--amber);
  color: #130c03;
  text-decoration: none;
  font-weight: 800;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 9, 11, 0.88);
  backdrop-filter: blur(18px);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: var(--page);
  min-height: 68px;
  margin: 0 auto;
}

.brand,
.nav-links,
.nav-actions,
.language-select {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  text-decoration: none;
  font-family: var(--mono);
  font-weight: 800;
  color: var(--green);
  white-space: nowrap;
}

.brand-mark {
  display: block;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  color: var(--green);
  filter: drop-shadow(0 0 14px rgba(50, 255, 102, 0.22));
}

.brand-logo {
  display: block;
  width: 100%;
  height: 100%;
}

.logo-frame {
  fill: rgba(12, 15, 17, 0.94);
  stroke: rgba(50, 255, 102, 0.72);
  stroke-width: 2;
}

.logo-pane {
  fill: rgba(50, 255, 102, 0.08);
  stroke: rgba(110, 231, 255, 0.34);
  stroke-width: 1.6;
  vector-effect: non-scaling-stroke;
}

.logo-shadow {
  fill: rgba(0, 0, 0, 0.34);
  stroke: rgba(50, 255, 102, 0.54);
  stroke-width: 1.2;
  vector-effect: non-scaling-stroke;
}

.logo-pane-right {
  fill: rgba(110, 231, 255, 0.08);
}

.logo-arrow,
.logo-arrow-head {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.logo-arrow {
  stroke: var(--amber);
  stroke-width: 2;
}

.logo-arrow-head {
  stroke: var(--amber);
  stroke-width: 1.9;
}

.logo-ascii,
.logo-unicode {
  fill: var(--green);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 900;
}

.logo-unicode {
  fill: var(--cyan);
}

.nav-links {
  gap: 18px;
  color: var(--muted);
  font-size: 0.94rem;
}

.nav-links a,
.site-footer a {
  text-decoration: none;
}

.nav-links a:hover,
.site-footer a:hover {
  color: var(--green);
}

.nav-actions {
  gap: 12px;
}

.nav-cta {
  min-height: 38px;
  padding: 8px 14px;
  background: var(--amber);
  color: #120c03;
  font-weight: 800;
  text-decoration: none;
  box-shadow: inset 4px 0 0 var(--green);
}

.language-select {
  position: relative;
  width: 170px;
  flex: 0 0 170px;
}

.language-select-button {
  min-height: 38px;
  padding-block: 7px;
}

.language-menu {
  right: 0;
  left: auto;
  width: 210px;
  max-height: min(420px, calc(100vh - 92px));
  overflow-y: auto;
}

.language-option {
  white-space: nowrap;
}

.hero-tool {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  width: var(--page);
  margin: 0 auto;
  padding: 42px 0 52px;
  align-items: stretch;
}

.hero-copy,
.converter-panel,
.preview-frame,
.terminal-note,
.example-card,
.format-grid article,
.use-grid article,
.trust-section article,
.step-list li {
  border: 1px solid var(--line-soft);
  background: rgba(12, 15, 17, 0.9);
  box-shadow: var(--shadow);
}

.hero-copy {
  display: flex;
  min-height: auto;
  flex-direction: column;
  justify-content: center;
  padding: clamp(22px, 4vw, 36px);
  background:
    linear-gradient(180deg, rgba(50, 255, 102, 0.08), transparent 36%),
    rgba(12, 15, 17, 0.88);
}

.eyebrow,
.panel-kicker {
  margin: 0 0 14px;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  color: var(--green);
  font-family: var(--mono);
  font-size: clamp(2.2rem, 6vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy h1 {
  color: #f3fff4;
  font-family: "Courier New", "SF Mono", Monaco, var(--mono);
  font-weight: 900;
  text-transform: uppercase;
  -webkit-font-smoothing: none;
  text-rendering: geometricPrecision;
  text-shadow:
    2px 0 0 rgba(50, 255, 102, 0.72),
    -1px 0 0 rgba(110, 231, 255, 0.22),
    0 2px 0 rgba(50, 255, 102, 0.36),
    0 0 16px rgba(50, 255, 102, 0.36);
}

h2 {
  color: var(--text);
  font-size: clamp(1.45rem, 3vw, 2.45rem);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  color: var(--green);
  font-size: 1.02rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-lede {
  color: #cbe9d1;
  font-size: 1.04rem;
}

.hero-lede code,
p code,
summary code {
  padding: 0 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--cyan);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.hero-proof span {
  padding: 8px 10px;
  border: 1px solid var(--line);
  background: rgba(50, 255, 102, 0.08);
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.converter-panel {
  min-width: 0;
  padding: 22px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.panel-head > div {
  flex: 1 1 auto;
  min-width: 0;
}

.panel-head h2 {
  max-width: none;
  margin-bottom: 0;
  font-size: clamp(1.18rem, 2vw, 1.8rem);
}

.status-pill {
  align-self: flex-start;
  flex: 0 0 auto;
  min-width: 72px;
  margin: 0;
  padding: 7px 10px;
  border: 1px solid var(--line);
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.78rem;
  text-align: center;
}

.mode-tabs,
.tool-actions,
.sample-row,
.option-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mode-tabs {
  margin-bottom: 14px;
}

.mode-tab,
.btn,
.sample-chip {
  min-height: 40px;
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.mode-tab {
  flex: 1 1 150px;
  padding: 9px 10px;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.mode-tab.is-active {
  border-color: var(--green);
  background: var(--green-soft);
  color: var(--green);
}

.option-row {
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.select-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.88rem;
}

.select-wrap > span {
  flex: 0 0 auto;
  min-width: 88px;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
}

select {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: #080a0b;
  color: var(--green);
  padding: 6px 34px 6px 10px;
}

.custom-select {
  position: relative;
}

.custom-select-control {
  position: relative;
  width: min(332px, 100%);
  min-width: 260px;
}

.native-select {
  position: absolute;
  inset: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.select-button {
  display: flex;
  width: 100%;
  min-height: 40px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 1px solid rgba(50, 255, 102, 0.5);
  border-radius: 0;
  background:
    linear-gradient(180deg, rgba(50, 255, 102, 0.08), rgba(255, 255, 255, 0.02)),
    #080a0b;
  color: var(--green);
  padding: 8px 12px;
  font-family: var(--mono);
  font-weight: 800;
  text-align: left;
  box-shadow: inset 3px 0 0 rgba(110, 231, 255, 0.22);
}

.select-button:hover,
.select-button[aria-expanded="true"] {
  border-color: var(--green);
  background:
    linear-gradient(180deg, rgba(50, 255, 102, 0.14), rgba(255, 255, 255, 0.03)),
    #080a0b;
}

.select-button:disabled {
  cursor: not-allowed;
  border-color: var(--line-soft);
  color: var(--muted);
  opacity: 0.62;
}

.select-arrow {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
}

.select-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  left: 0;
  z-index: 12;
  display: none;
  gap: 4px;
  border: 1px solid rgba(50, 255, 102, 0.5);
  background: rgba(8, 10, 11, 0.98);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.48);
  padding: 6px;
}

.custom-select.is-open .select-menu {
  display: grid;
}

.language-select .language-menu {
  right: 0;
  left: auto;
  width: 210px;
}

.select-option {
  min-height: 38px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  padding: 8px 10px;
  font-family: var(--mono);
  font-weight: 800;
  text-align: left;
}

.select-option:hover,
.select-option:focus-visible,
.select-option.is-selected {
  border-color: rgba(50, 255, 102, 0.5);
  background: var(--green-soft);
  color: var(--green);
}

.switch {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 0.88rem;
}

.switch input {
  position: absolute;
  opacity: 0;
}

.switch-ui {
  position: relative;
  width: 46px;
  height: 24px;
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.04);
}

.switch-ui::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  background: var(--muted);
  content: "";
  transition: transform 160ms ease, background 160ms ease;
}

.switch input:checked + .switch-ui::after {
  transform: translateX(22px);
  background: var(--green);
}

.format-help {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.84rem;
}

.text-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.text-box {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 8px;
}

.text-box > span {
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.84rem;
  font-weight: 800;
}

textarea {
  width: 100%;
  min-height: 214px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 0;
  background: rgba(0, 0, 0, 0.48);
  color: var(--green);
  padding: 14px;
  font-size: 0.96rem;
  line-height: 1.55;
}

textarea[readonly] {
  color: #f2f4df;
}

small {
  color: var(--muted);
}

.tool-actions {
  margin-top: 14px;
}

.btn,
.sample-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 12px;
  font-weight: 800;
}

.btn-primary {
  border-color: var(--amber);
  background: var(--amber);
  color: #120c03;
}

.btn:hover,
.sample-chip:hover {
  border-color: var(--green);
  color: var(--green);
}

.btn-primary:hover {
  border-color: var(--green);
  color: #120c03;
}

.warning-line {
  min-height: 28px;
  margin-top: 12px;
  color: var(--rose);
  font-family: var(--mono);
  font-size: 0.84rem;
}

.sample-row {
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.sample-chip {
  font-family: var(--mono);
  color: var(--cyan);
  flex: 1 1 calc(50% - 8px);
}

.visual-band,
.content-section {
  width: var(--page);
  margin: 0 auto;
  padding: 42px 0;
}

.visual-band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
  border-top: 1px solid var(--line-soft);
}

.section-copy {
  max-width: none;
}

.section-copy p {
  color: #c9d7cc;
}

.preview-frame {
  margin: 0;
  padding: 12px;
}

.preview-frame img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

.preview-frame figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.88rem;
}

.split-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.step-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.step-list li {
  position: relative;
  min-height: 128px;
  padding: 20px 20px 20px 62px;
  counter-increment: steps;
}

.step-list li::before {
  position: absolute;
  left: 18px;
  top: 20px;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--green);
  font-family: var(--mono);
  content: counter(steps);
}

.example-grid,
.format-grid,
.use-grid,
.trust-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.example-card,
.format-grid article,
.use-grid article,
.trust-section article {
  padding: 18px;
}

.example-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.example-card p,
.format-grid p,
.use-grid p,
.trust-section p,
.step-list p {
  color: #c9d7cc;
}

pre {
  overflow-x: auto;
  margin: 0 0 10px;
  padding: 12px;
  border: 1px solid rgba(110, 231, 255, 0.2);
  background: rgba(0, 0, 0, 0.38);
  color: var(--green);
  white-space: pre-wrap;
  word-break: break-word;
}

.example-btn {
  justify-content: center;
  margin-top: auto;
  border-color: rgba(50, 255, 102, 0.5);
  background:
    linear-gradient(180deg, rgba(50, 255, 102, 0.08), rgba(255, 255, 255, 0.02)),
    rgba(8, 10, 11, 0.74);
  color: #f3fff4;
  font-size: 1.02rem;
  box-shadow: inset 0 0 0 1px rgba(110, 231, 255, 0.08);
}

.example-btn:hover {
  border-color: var(--green);
  background:
    linear-gradient(180deg, rgba(50, 255, 102, 0.16), rgba(255, 255, 255, 0.04)),
    rgba(8, 10, 11, 0.86);
}

.terminal-note {
  border-color: var(--line);
  padding: 22px;
  color: var(--green);
  font-family: var(--mono);
}

.faq-list {
  display: grid;
  gap: 10px;
}

details {
  border: 1px solid var(--line-soft);
  background: rgba(12, 15, 17, 0.9);
}

summary {
  min-height: 48px;
  padding: 13px 16px;
  color: var(--green);
  font-weight: 800;
  cursor: pointer;
}

details p {
  margin: 0;
  padding: 0 16px 16px;
  color: #c9d7cc;
}

.trust-section {
  border-top: 1px solid var(--line-soft);
}

.trust-section h2 {
  font-size: 1.2rem;
}

.policy-link {
  display: inline-flex;
  margin-top: 4px;
  color: var(--cyan);
  font-weight: 800;
  text-decoration: none;
}

.policy-link:hover {
  color: var(--green);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: var(--page);
  margin: 0 auto;
  padding: 34px 0 46px;
  color: var(--muted);
}

.site-footer nav {
  display: flex;
  gap: 14px;
}

.not-found-page {
  display: grid;
  width: var(--page);
  min-height: 64vh;
  margin: 0 auto;
  padding: 64px 0;
  place-items: center;
}

.not-found-card {
  width: min(760px, 100%);
  border: 1px solid var(--line-soft);
  background:
    linear-gradient(180deg, rgba(50, 255, 102, 0.08), transparent 42%),
    rgba(12, 15, 17, 0.9);
  box-shadow: var(--shadow);
  padding: clamp(24px, 6vw, 48px);
}

.not-found-card p {
  color: #c9d7cc;
}

.not-found-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.legal-page {
  width: var(--page);
  margin: 0 auto;
  padding: 46px 0 56px;
}

.legal-card {
  border: 1px solid var(--line-soft);
  background:
    linear-gradient(180deg, rgba(50, 255, 102, 0.08), transparent 32%),
    rgba(12, 15, 17, 0.9);
  box-shadow: var(--shadow);
  padding: clamp(22px, 5vw, 44px);
}

.legal-card h1 {
  font-size: clamp(2rem, 6vw, 3.6rem);
}

.legal-card h2 {
  margin-top: 28px;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
}

.legal-card p,
.legal-card li {
  color: #c9d7cc;
}

.legal-card ul {
  padding-left: 22px;
}

.legal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.legal-grid article {
  border: 1px solid var(--line-soft);
  background: rgba(0, 0, 0, 0.24);
  padding: 18px;
}

@media (max-width: 1340px) {
  .code-stream {
    display: none;
  }
}

@media (max-width: 1000px) {
  .hero-tool,
  .visual-band,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    min-height: auto;
  }

}

@media (max-width: 780px) {
  .nav-shell {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
  }

  .nav-links,
  .nav-actions {
    width: 100%;
    justify-content: space-between;
  }

  .nav-links {
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero-tool {
    padding-top: 24px;
  }

  .converter-panel {
    padding: 16px;
  }

  .panel-head,
  .option-row,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .select-wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .select-wrap > span {
    min-width: auto;
  }

  .custom-select-control {
    width: 100%;
    min-width: 0;
  }

  .text-grid,
  .step-list,
  .example-grid,
  .format-grid,
  .use-grid,
  .trust-section,
  .legal-grid {
    grid-template-columns: 1fr;
  }

  textarea {
    min-height: 178px;
  }
}

@media (max-width: 520px) {
  .nav-shell,
  .hero-tool,
  .visual-band,
  .content-section,
  .site-footer,
  .not-found-page,
  .legal-page {
    width: min(100% - 24px, 1180px);
  }

  .brand {
    white-space: normal;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .nav-actions,
  .nav-links,
  .tool-actions {
    gap: 8px;
  }

  .nav-actions {
    align-items: center;
    justify-content: flex-start;
  }

  .nav-cta,
  .btn,
  .sample-chip {
    flex: 1 1 auto;
    text-align: center;
  }

  .language-select {
    width: min(170px, 46vw);
    min-width: 0;
    flex-basis: min(170px, 46vw);
  }

  h1 {
    font-size: clamp(2rem, 14vw, 3.6rem);
  }

  .hero-copy {
    padding: 22px;
  }

  .mode-tab {
    flex-basis: 100%;
  }

  .top-button {
    right: 14px;
    bottom: 18px;
    width: 50px;
    height: 50px;
    font-size: 0.78rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .code-stream {
    display: none;
  }
}