:root {
  --color-page: #F6F9F9;
  --color-panel: #FFFFFF;
  --color-panel-muted: #EDF3F1;
  --color-side: #FBFDFC;
  --color-line: #E2E9E7;
  --color-line-soft: #ECF1F0;
  --color-chrome: #D5DDDA;
  --color-accent: #17B26A;
  --color-accent-deep: #0E8A50;
  --color-accent-soft: #E3F5EC;
  --color-accent-wash: rgba(23, 178, 106, .12);
  --color-blue-wash: rgba(120, 175, 235, .10);
  --color-ink: #1B2420;
  --color-ink-muted: #5C6B65;
  --color-success: #17B26A;
  --color-warning: #D98A06;
  --color-danger: #D64545;
  --color-overlay: rgba(27, 36, 32, .34);
  --color-shadow-soft: rgba(27, 36, 32, .06);
  --color-shadow-mid: rgba(27, 36, 32, .16);
  --color-shadow-strong: rgba(27, 36, 32, .18);
  --color-shadow-accent: rgba(14, 138, 80, .42);
  --font-display: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Courier New', monospace;
  --radius-card: 26px;
  --radius-panel: 24px;
  --radius-medium: 16px;
  --radius-small: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 30px 70px -24px var(--color-shadow-mid), 0 8px 22px -6px var(--color-shadow-soft);
  --shadow-float: 0 16px 34px -12px var(--color-shadow-strong), 0 3px 10px var(--color-shadow-soft);
  --shadow-button: 0 10px 24px -8px var(--color-shadow-accent);
  --shadow-fab: 0 14px 30px -10px var(--color-shadow-accent);
  --content-width: 1160px;
  --reading-width: 820px;
  --header-width: 1280px;
  --gutter: 32px;
  --header-height: 74px;
  --section-space: 104px;
  --transition-fast: 160ms ease;
  --transition-reveal: 620ms cubic-bezier(.2, .75, .25, 1);
}

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

html {
  scroll-behavior: smooth;
  background: var(--color-page);
}

html.nav-open {
  overflow: hidden;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--color-page);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body,
button,
input,
select,
textarea {
  font-family: var(--font-body);
}

img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
}

svg {
  flex-shrink: 0;
}

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

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

button {
  color: inherit;
}

ul,
ol {
  margin: 0;
}

figure,
blockquote,
p,
h1,
h2,
h3,
h4 {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--color-ink);
  font-family: var(--font-display);
  line-height: 1.2;
  text-wrap: balance;
}

h1 {
  font-size: clamp(34px, 3.2vw, 48px);
  font-weight: 800;
  letter-spacing: -.015em;
}

h2 {
  font-size: clamp(28px, 2.5vw, 38px);
  font-weight: 800;
  letter-spacing: -.012em;
}

h3 {
  font-size: clamp(21px, 2vw, 27px);
  font-weight: 750;
}

p {
  margin-bottom: 1.2em;
}

strong {
  color: var(--color-ink);
  font-weight: 700;
}

code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
}

code {
  overflow-wrap: anywhere;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 20px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-panel-muted);
  color: var(--color-ink);
  line-height: 1.65;
  -webkit-overflow-scrolling: touch;
}

pre code {
  overflow-wrap: normal;
  white-space: pre;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--color-panel-muted);
  color: var(--color-ink);
  font-weight: 700;
}

:focus-visible {
  outline: 3px solid var(--color-accent-wash);
  outline-offset: 3px;
}

.wrap {
  width: 100%;
  max-width: calc(var(--content-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.reading-wrap {
  width: 100%;
  max-width: calc(var(--reading-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.header-wrap {
  width: 100%;
  max-width: min(100%, calc(var(--header-width) + var(--gutter) * 2));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}

.section-muted {
  background: var(--color-panel-muted);
  color: var(--color-ink);
}

.title-nowrap {
  white-space: nowrap;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  padding: 6px 15px;
  border-radius: var(--radius-pill);
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
  font-size: 13px;
  font-weight: 700;
}

.eyebrow::before {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
}

.accent-text {
  color: var(--color-accent);
}

.muted {
  color: var(--color-ink-muted);
}

.card,
.panel {
  min-width: 0;
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.card {
  padding: 30px;
}

.panel {
  padding: 36px;
}

.tilt-soft {
  transform: rotate(1.2deg);
}

.button,
.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  max-width: 100%;
  padding: 12px 27px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  transition: transform var(--transition-fast), filter var(--transition-fast), border-color var(--transition-fast);
}

.button svg,
.btn svg {
  width: 17px;
  height: 17px;
}

.button:hover,
.btn:hover {
  transform: translateY(-1px);
}

.button-primary,
.btn-main {
  border-color: var(--color-accent-deep);
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-deep));
  color: var(--color-panel);
  box-shadow: var(--shadow-button);
}

.button-primary:hover,
.btn-main:hover {
  filter: brightness(1.04);
}

.button-secondary,
.btn-ghost {
  border-color: var(--color-line);
  background: var(--color-panel);
  color: var(--color-ink);
}

.button-secondary:hover,
.btn-ghost:hover {
  border-color: var(--color-ink-muted);
}

.button:disabled,
.button.is-disabled {
  cursor: not-allowed;
  filter: grayscale(1);
  opacity: .58;
  transform: none;
}

.site-head {
  position: relative;
  z-index: 80;
  min-height: var(--header-height);
  padding-top: 18px;
  padding-bottom: 18px;
  background: var(--color-page);
  color: var(--color-ink);
}

.head-in {
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 750;
  letter-spacing: .01em;
  white-space: nowrap;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 31px;
  margin-left: auto;
}

.desktop-nav a {
  color: var(--color-ink-muted);
  font-size: 14px;
  font-weight: 550;
  white-space: nowrap;
}

.desktop-nav a:hover,
.desktop-nav a.is-active,
.desktop-nav a[aria-current="page"] {
  color: var(--color-ink);
}

.desktop-nav a.is-active,
.desktop-nav a[aria-current="page"] {
  font-weight: 750;
}

.header-tools {
  position: relative;
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 8px;
}

.language-control {
  position: relative;
}

.language-button {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-ink-muted);
  cursor: pointer;
  font-size: 13px;
  white-space: nowrap;
}

.language-short {
  display: none;
}

.language-menu {
  position: absolute;
  top: calc(100% + 9px);
  right: 0;
  z-index: 4;
  display: none;
  width: 176px;
  padding: 8px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-float);
}

.language-control.is-open .language-menu {
  display: block;
}

.language-menu a {
  display: flex;
  min-height: 42px;
  align-items: center;
  width: 100%;
  padding: 8px 12px;
  border-radius: var(--radius-small);
  color: var(--color-ink-muted);
  font-size: 14px;
}

.language-menu a:hover,
.language-menu a[aria-current="true"] {
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
}

.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 9px;
  border: 0;
  border-radius: var(--radius-small);
  background: var(--color-panel);
  color: var(--color-ink);
  cursor: pointer;
}

.menu-toggle-lines,
.menu-toggle-lines::before,
.menu-toggle-lines::after {
  display: block;
  width: 21px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  content: "";
}

.menu-toggle-lines {
  position: relative;
}

.menu-toggle-lines::before {
  position: absolute;
  top: -7px;
}

.menu-toggle-lines::after {
  position: absolute;
  top: 7px;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines::after {
  top: 0;
  transform: rotate(-45deg);
}

.mobile-nav {
  position: absolute;
  top: 100%;
  right: var(--gutter);
  left: var(--gutter);
  z-index: 3;
  display: none;
  max-height: calc(100dvh - var(--header-height));
  overflow-y: auto;
  padding: 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-float);
  overscroll-behavior: contain;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav a {
  display: flex;
  min-height: 46px;
  align-items: center;
  width: 100%;
  padding: 10px 13px;
  border-radius: var(--radius-small);
  color: var(--color-ink-muted);
  font-size: 15px;
}

.mobile-nav a:hover,
.mobile-nav a.is-active,
.mobile-nav a[aria-current="page"],
.mobile-nav a[aria-current="true"] {
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
  font-weight: 700;
}

.mobile-language-label {
  margin: 10px 13px 4px;
  color: var(--color-ink-muted);
  font-size: 12px;
  font-weight: 700;
}

.nav-veil {
  position: fixed;
  inset: 0;
  z-index: -1;
  display: none;
  background: var(--color-overlay);
}

.nav-veil.is-visible {
  display: block;
}

.site-footer {
  padding-top: 72px;
  padding-bottom: 28px;
  border-top: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr .8fr 1.2fr .8fr;
  gap: 48px;
}

.footer-brand p {
  max-width: 360px;
  margin-top: 18px;
  color: var(--color-ink-muted);
  font-size: 14px;
}

.footer-title {
  margin-bottom: 16px;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 750;
}

.footer-links {
  display: grid;
  gap: 9px;
  padding: 0;
  list-style: none;
}

.footer-links a {
  color: var(--color-ink-muted);
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--color-accent-deep);
}

.footer-hot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-hot a {
  display: inline-flex;
  max-width: 100%;
  padding: 6px 11px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  color: var(--color-ink-muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.footer-hot a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-deep);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 52px;
  padding-top: 22px;
  border-top: 1px solid var(--color-line);
  color: var(--color-ink-muted);
  font-size: 13px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--transition-reveal), transform var(--transition-reveal);
}

.reveal.shown {
  opacity: 1;
  transform: none;
}

.hero {
  position: relative;
  overflow-x: clip;
  padding-top: 34px;
  text-align: center;
}

.hero::before {
  position: absolute;
  z-index: 0;
  top: -120px;
  right: -200px;
  left: -200px;
  height: 760px;
  background:
    radial-gradient(720px 420px at 34% 78%, var(--color-accent-wash), transparent 72%),
    radial-gradient(760px 440px at 70% 30%, var(--color-blue-wash), transparent 74%);
  content: "";
  pointer-events: none;
}

.hero > .wrap {
  position: relative;
  z-index: 1;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 22px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  max-width: 100%;
  padding: 6px 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-ink-muted);
  font-size: 12.5px;
  font-weight: 550;
}

.chip i {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-accent);
}

.hero h1 {
  margin-bottom: 0;
  font-size: clamp(34px, 3.1vw, 44px);
  line-height: 1.22;
}

.hero h1 em {
  color: var(--color-accent);
  font-style: normal;
}

.hero-sub {
  max-width: 760px;
  margin: 16px auto 0;
  color: var(--color-ink-muted);
  font-size: 16.5px;
  line-height: 1.75;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 26px;
}

.plat-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 20px 26px;
  margin-top: 22px;
}

.plat-lb {
  color: var(--color-ink-muted);
  font-size: 13px;
}

.plat {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-ink-muted);
  font-size: 13.5px;
  font-weight: 550;
}

.plat svg {
  width: 15px;
  height: 15px;
}

.hero-stage {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 40px auto 0;
  padding-inline: var(--gutter);
}

.app-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
  text-align: left;
  transform: rotate(1.2deg);
}

.app-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-line-soft);
}

.app-dots {
  display: flex;
  gap: 7px;
}

.app-dots i {
  width: 11px;
  height: 11px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-chrome);
}

.app-title {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
}

.app-body {
  display: grid;
  grid-template-columns: 196px minmax(0, 1fr);
}

.app-side {
  min-width: 0;
  padding: 16px 12px;
  border-right: 1px solid var(--color-line-soft);
  background: var(--color-side);
  color: var(--color-ink-muted);
}

.side-item {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 4px;
  padding: 9px 12px;
  border-radius: var(--radius-small);
  color: var(--color-ink-muted);
  font-size: 13.5px;
}

.side-item i {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-chrome);
}

.side-item.is-active {
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
  font-weight: 700;
}

.side-item.is-active i {
  background: var(--color-accent);
}

.app-main {
  min-width: 0;
  padding: 20px 26px 22px;
}

.setting-label {
  margin-bottom: 12px;
  color: var(--color-ink-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
}

.radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-line-soft);
}

.mock-radio {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-ink-muted);
  font-size: 14px;
}

.mock-radio-dot {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  border: 1.5px solid var(--color-line);
  border-radius: 50%;
  background: var(--color-panel);
}

.mock-radio.is-active {
  color: var(--color-ink);
  font-weight: 700;
}

.mock-radio.is-active .mock-radio-dot {
  border: 4.5px solid var(--color-accent);
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 13px 0;
  border-bottom: 1px solid var(--color-line-soft);
}

.setting-name {
  margin: 0;
  color: var(--color-ink);
  font-size: 14.5px;
  font-weight: 700;
}

.setting-desc {
  margin: 3px 0 0;
  color: var(--color-ink-muted);
  font-size: 12.5px;
}

.mock-switch {
  position: relative;
  width: 42px;
  height: 24px;
  flex-shrink: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel-muted);
}

.mock-switch::after {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-panel);
  box-shadow: 0 1px 3px var(--color-shadow-strong);
  content: "";
}

.mock-switch.is-on {
  border-color: var(--color-accent);
  background: var(--color-accent);
}

.mock-switch.is-on::after {
  right: 2px;
  left: auto;
}

.update-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 16px;
}

.update-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-small);
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
  font-size: 13.5px;
  font-weight: 700;
}

.update-button svg {
  width: 14px;
  height: 14px;
}

.update-note {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-ink-muted);
  font-size: 12.5px;
}

.update-note svg {
  width: 13px;
  height: 13px;
  color: var(--color-accent);
}

.float-status {
  position: absolute;
  z-index: 2;
  top: -22px;
  left: -30px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 20px;
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-float);
  transform: rotate(-1.6deg);
}

.float-status-icon {
  display: flex;
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
}

.float-status-icon svg {
  width: 13px;
  height: 13px;
}

.float-status-text {
  font-size: 13.5px;
  font-weight: 700;
  white-space: nowrap;
}

.factband {
  margin-top: 44px;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-ink);
}

.fact-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 17px;
  padding-bottom: 17px;
}

.fact {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.fact-key {
  color: var(--color-ink-muted);
  font-size: 12px;
  white-space: nowrap;
}

.fact-value {
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.fact-separator {
  width: 1px;
  height: 22px;
  flex-shrink: 0;
  background: var(--color-line);
}

.preview-section {
  padding-top: 88px;
  padding-bottom: 88px;
}

.preview-section-title {
  margin-bottom: 34px;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.swatch {
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  color: var(--color-ink);
}

.swatch-color {
  height: 90px;
}

.swatch-meta {
  padding: 13px;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.swatch-page .swatch-color {
  background: var(--color-page);
}

.swatch-panel .swatch-color {
  background: var(--color-panel);
}

.swatch-muted .swatch-color {
  background: var(--color-panel-muted);
}

.swatch-line .swatch-color {
  background: var(--color-line);
}

.swatch-accent .swatch-color {
  background: var(--color-accent);
}

.swatch-accent-deep .swatch-color {
  background: var(--color-accent-deep);
}

.swatch-ink .swatch-color {
  background: var(--color-ink);
}

.swatch-ink-muted .swatch-color {
  background: var(--color-ink-muted);
}

.type-stack > * {
  margin-bottom: 20px;
}

.button-showcase {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (max-width: 1080px) {
  .desktop-nav {
    gap: 19px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .fact-in {
    flex-wrap: wrap;
    justify-content: center;
  }

  .fact-separator {
    display: none;
  }
}

@media (max-width: 860px) {
  :root {
    --section-space: 80px;
  }

  .desktop-nav {
    display: none;
  }

  .header-tools {
    margin-left: auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .preview-grid,
  .swatch-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .app-body {
    grid-template-columns: 154px minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  h1,
  .hero h1 {
    font-size: clamp(24px, 7vw, 30px);
    line-height: 1.2;
  }

  h2 {
    font-size: clamp(24px, 6vw, 30px);
  }

  .hero {
    padding-top: 24px;
  }

  .hero-stage {
    margin-top: 34px;
  }

  .float-status {
    left: var(--gutter);
  }

  .footer-grid {
    gap: 34px;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 18px;
    --section-space: 68px;
  }

  body {
    overflow-x: clip;
    font-size: 15px;
  }

  .wrap,
  .reading-wrap,
  .header-wrap {
    padding-inline: var(--gutter);
  }

  .tilt-soft,
  .app-card,
  .float-status {
    transform: none;
  }

  .card,
  .panel {
    padding: 22px;
    border-radius: var(--radius-panel);
  }

  .language-full {
    display: none;
  }

  .language-short {
    display: inline;
  }

  .language-button {
    min-width: 52px;
    justify-content: center;
    padding-inline: 10px;
  }

  .mobile-nav {
    right: var(--gutter);
    left: var(--gutter);
  }

  .hero::before {
    right: -60px;
    left: -60px;
  }

  .chips {
    gap: 7px;
    max-height: 104px;
    overflow: hidden;
  }

  .chip {
    padding: 5px 10px;
    font-size: 11.5px;
  }

  .hero-sub {
    font-size: 15px;
    line-height: 1.7;
  }

  .cta-row {
    gap: 10px;
  }

  .cta-row .button,
  .cta-row .btn {
    width: 100%;
  }

  .plat-row {
    gap: 12px 16px;
  }

  .plat-lb {
    width: 100%;
  }

  .hero-stage {
    padding-inline: var(--gutter);
  }

  .float-status {
    position: relative;
    top: auto;
    left: auto;
    width: max-content;
    max-width: 100%;
    margin: 0 0 12px 8px;
    padding: 10px 14px;
  }

  .app-body {
    display: block;
  }

  .app-side {
    display: flex;
    overflow-x: auto;
    padding: 10px;
    border-right: 0;
    border-bottom: 1px solid var(--color-line-soft);
    -webkit-overflow-scrolling: touch;
  }

  .side-item {
    flex-shrink: 0;
    margin: 0 4px 0 0;
  }

  .app-main {
    padding: 18px;
  }

  .radio-row {
    gap: 10px 16px;
  }

  .setting-row {
    align-items: flex-start;
  }

  .setting-desc {
    overflow-wrap: anywhere;
  }

  .update-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .factband {
    margin-top: 32px;
  }

  .fact-in {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .fact {
    justify-content: space-between;
    width: 100%;
  }

  .preview-grid,
  .swatch-grid,
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .preview-section {
    padding-top: 68px;
    padding-bottom: 68px;
  }

  th,
  td {
    padding: 11px 12px;
  }
}

@media (max-width: 380px) {
  :root {
    --gutter: 16px;
  }

  .brand-name {
    font-size: 15px;
  }

  .brand-mark {
    width: 31px;
    height: 31px;
  }

  .plat {
    font-size: 12.5px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    transition-duration: .01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}