:root {
  --bg: oklch(11% 0.02 220);
  --bg-2: oklch(14% 0.025 220);
  --ink: oklch(97% 0.01 165);
  --muted: oklch(72% 0.03 180);
  --neon: oklch(90% 0.2 162);
  --cyan: oklch(82% 0.13 215);
  --violet: oklch(66% 0.19 293);
  --neon-ink: oklch(14% 0.04 165);
  --line: oklch(97% 0.01 165 / 0.09);
  --line-2: oklch(97% 0.01 165 / 0.16);
  --card: oklch(97% 0.01 165 / 0.04);
  --card-2: oklch(97% 0.01 165 / 0.07);
  --danger: oklch(64% 0.2 20);
  --danger-text: oklch(80% 0.13 20);
  --glow-neon: oklch(90% 0.2 162 / 0.35);
  --glow-cyan: oklch(82% 0.13 215 / 0.3);
  --scrim: oklch(8% 0.02 220 / 0.8);
  --font-display: "Space Grotesk", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Yu Gothic UI", "Malgun Gothic", sans-serif;
  --font-body: "Geist", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Yu Gothic UI", "Yu Gothic", "Malgun Gothic", "Nirmala UI", "Leelawadee UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", monospace;
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-touch: 3rem;
  --page-gutter: clamp(1.25rem, 5vw, 3rem);
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-md: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.563rem;
  --text-2xl: 2rem;
  --text-hero: clamp(1.85rem, 6.6vw + 0.45rem, 2.85rem);
  --text-figure: clamp(3.4rem, 16vw, 5.5rem);
  --ease-out: cubic-bezier(0.2, 0, 0, 1);
  --ease-soft: cubic-bezier(0.33, 1, 0.68, 1);
  --dur: 220ms;
  --dur-slow: 400ms;
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.25rem;
  --radius-pill: 999px;
}

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

html,
body {
  overflow-x: clip;
  margin: 0;
}

html {
  height: 100%;
  text-size-adjust: 100%;
  color-scheme: dark;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-xl);
}

body {
  min-height: 100%;
  padding-bottom: calc(var(--space-lg) + env(safe-area-inset-bottom));
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 400;
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
}

::selection {
  background: var(--neon);
  color: var(--neon-ink);
}

p,
h1,
h2,
h3,
figure,
dl,
dd {
  margin: 0;
  max-width: 100%;
}

h1,
h2,
h3,
.figure,
.reward-figure {
  overflow-wrap: break-word;
  min-width: 0;
  font-family: var(--font-display);
}

a {
  color: var(--ink);
}

.shell {
  width: min(42rem, calc(100% - var(--page-gutter) * 2));
  margin-inline: auto;
}

.skip {
  position: absolute;
  inset-inline-start: var(--space-sm);
  top: -200%;
  z-index: 60;
  background: var(--neon);
  color: var(--neon-ink);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-sm);
}

.skip:focus {
  top: var(--space-sm);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* —— top bar —— */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--page-gutter);
  background: oklch(11% 0.02 220 / 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  line-height: 1;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}

.logo i {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--neon), var(--cyan));
  box-shadow: 0 0 10px var(--glow-neon);
}

.topbar__end {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  line-height: 1;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  min-width: 2.75rem;
  padding-inline: var(--space-2xs);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--card);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
}

/* —— hero —— */

.hero {
  position: relative;
  display: grid;
  padding: var(--space-lg) var(--page-gutter) var(--space-xl);
  overflow: clip;
}

#net {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.42;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-sm);
  justify-items: start;
  width: min(42rem, 100%);
  margin-inline: auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-3xs) var(--space-xs);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-pill);
  background: var(--card);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.badge i {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: var(--radius-pill);
  background: var(--neon);
  box-shadow: 0 0 8px var(--glow-neon);
  animation: blink 1.6s var(--ease-soft) infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.figure {
  display: flex;
  align-items: baseline;
  gap: var(--space-xs);
  line-height: 0.95;
}

.figure__num {
  font-size: var(--text-figure);
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(100deg, var(--neon) 20%, var(--cyan) 55%, var(--violet) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 24px var(--glow-neon));
}

.figure__unit {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--muted);
}

h1 {
  font-size: var(--text-hero);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.22;
  text-wrap: balance;
  max-width: 11em;
}

.lead {
  max-width: 36ch;
  color: var(--ink);
  opacity: 0.78;
  font-size: var(--text-md);
  line-height: 1.65;
}

.trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  width: 100%;
}

.trust span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3xs);
  min-height: 2rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-pill);
  background: oklch(11% 0.02 220 / 0.72);
  color: var(--ink);
  font-size: var(--text-xs);
  white-space: nowrap;
}

.trust i {
  width: 0.45rem;
  height: 0.45rem;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--neon);
  box-shadow: 0 0 8px var(--glow-neon);
}

.cta-row {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: var(--space-xs);
  width: 100%;
}

.cta-row .btn {
  width: 100%;
  padding-inline: var(--space-sm);
}

/* —— marquee —— */

.marquee {
  border-block: 1px solid var(--line);
  padding-block: var(--space-xs);
  overflow: hidden;
  display: grid;
  gap: var(--space-3xs);
}

.marquee__label {
  padding-inline: var(--page-gutter);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.marquee__track {
  display: flex;
  width: max-content;
  animation: slide 36s linear infinite;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 16%, #000 84%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 16%, #000 84%, transparent);
}

.marquee__track span {
  padding-inline-end: var(--space-md);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: oklch(97% 0.01 165 / 0.55);
  white-space: nowrap;
}

@keyframes slide {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

html[dir="rtl"] .marquee__track {
  animation-direction: reverse;
}

/* —— sections —— */

section {
  padding-block: var(--space-xl);
}

.sec-head {
  display: grid;
  gap: var(--space-2xs);
  margin-bottom: var(--space-lg);
}

.sec-head .kicker {
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.sec-head p {
  color: var(--muted);
  max-width: 52ch;
}

/* —— steps —— */

.steps {
  display: grid;
  gap: var(--space-xs);
}

.step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-sm);
  padding: var(--space-sm);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.step::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--neon), var(--cyan));
  opacity: 0.7;
}

.step__no {
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, oklch(90% 0.2 162 / 0.16), oklch(82% 0.13 215 / 0.16));
  border: 1px solid var(--line-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--neon);
}

.step h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-3xs);
}

.step p {
  color: var(--muted);
  font-size: var(--text-sm);
}

.guide {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--space-2xs);
  margin: var(--space-sm) 0 0;
}

.guide li {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: var(--space-sm);
  align-items: center;
  min-height: var(--space-touch);
  padding: var(--space-2xs) var(--space-sm);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.guide li > span:first-child {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--neon);
}

.hint {
  color: var(--muted);
  font-size: var(--text-sm);
}

/* —— why —— */

.why {
  display: grid;
  gap: var(--space-xs);
}

.why__chip {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.why__chip i {
  width: 2.25rem;
  height: 2.25rem;
  flex: 0 0 auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-2);
  background:
    radial-gradient(80% 80% at 30% 20%, oklch(82% 0.13 215 / 0.3), transparent 70%),
    var(--card-2);
}

.why__chip h3 {
  font-size: var(--text-md);
  font-weight: 600;
}

.why__chip p {
  color: var(--muted);
  font-size: var(--text-sm);
}

/* —— rules + faq —— */

.rules {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: rule;
}

.rules li {
  counter-increment: rule;
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: var(--space-sm);
  padding-block: var(--space-xs);
  align-items: start;
}

.rules li + li {
  border-top: 1px solid var(--line);
}

.rules li::before {
  content: counter(rule, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--neon);
  padding-top: 0.35em;
}

.rules li span {
  color: var(--muted);
  font-size: var(--text-sm);
}

.faq {
  display: grid;
  gap: var(--space-2xs);
}

details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding-inline: var(--space-sm);
}

summary {
  min-height: var(--space-touch);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  cursor: pointer;
  font-weight: 500;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "";
  width: 0.65rem;
  height: 0.65rem;
  flex: 0 0 auto;
  background:
    linear-gradient(var(--ink), var(--ink)) center / 100% 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) center / 1px 100% no-repeat;
}

details[open] summary::after {
  background: linear-gradient(var(--ink), var(--ink)) center / 100% 1px no-repeat;
}

details p {
  padding-bottom: var(--space-sm);
  color: var(--muted);
  font-size: var(--text-sm);
}

/* —— claim form —— */

.claim-card {
  padding: var(--space-md);
  background: var(--card);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.progress {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  margin-bottom: var(--space-md);
  line-height: 1;
}

.pip {
  width: 2rem;
  height: 2rem;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-2);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
}

.pip.is-now,
.pip.is-done {
  border-color: transparent;
  background: linear-gradient(135deg, var(--neon), var(--cyan));
  color: var(--neon-ink);
  box-shadow: 0 0 14px var(--glow-neon);
}

.progress .bar {
  flex: 1 1 auto;
  min-width: 0.5rem;
  height: 2px;
  border-radius: 1px;
  background: var(--line-2);
}

.progress .bar.is-done {
  background: linear-gradient(90deg, var(--neon), var(--cyan));
}

.step-title {
  margin-bottom: var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  overflow-wrap: anywhere;
  min-width: 0;
}

.field,
.stack {
  display: grid;
  gap: var(--space-2xs);
}

.field + .field,
.stack + .stack,
.field + .stack,
.stack + .field {
  margin-top: var(--space-sm);
}

label,
legend {
  font-size: var(--text-sm);
  color: var(--muted);
}

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

input,
select,
.btn,
.choice,
.lang-opt,
.lang-btn,
.region-opt {
  font: inherit;
  color: var(--ink);
  outline: 2px solid transparent;
}

input,
select {
  width: 100%;
  min-height: var(--space-touch);
  padding-inline: var(--space-sm);
  background: oklch(11% 0.02 220 / 0.85);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-md);
}

.select-wrap {
  position: relative;
}

.select-wrap::after {
  content: "";
  position: absolute;
  inset-inline-end: var(--space-sm);
  top: 50%;
  width: 0.45rem;
  height: 0.45rem;
  border-inline-end: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}

select {
  appearance: none;
  padding-inline-end: var(--space-xl);
}

input::placeholder {
  color: var(--muted);
}

input:-webkit-autofill {
  -webkit-text-fill-color: var(--ink);
  caret-color: var(--ink);
  box-shadow: inset 0 0 0 2rem var(--bg-2);
}

.field.is-error input,
.field.is-error select {
  border-color: var(--danger);
}

.error {
  min-height: 1.4em;
  margin: 0;
  color: var(--danger-text);
  font-size: var(--text-sm);
}

.choices,
.region-list,
.lang-list {
  display: grid;
  gap: var(--space-2xs);
}

.region-list {
  max-height: 14rem;
  overflow: auto;
}

.choice,
.lang-opt,
.region-opt {
  width: 100%;
  min-height: var(--space-touch);
  padding-inline: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  text-align: start;
  background: oklch(11% 0.02 220 / 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
}

.choice span,
.region-opt,
.lang-opt {
  overflow: hidden;
  text-overflow: ellipsis;
}

.choice[aria-checked="true"],
.lang-opt[aria-selected="true"],
.region-opt[aria-selected="true"] {
  border-color: var(--neon);
  background: linear-gradient(100deg, oklch(90% 0.2 162 / 0.12), oklch(82% 0.13 215 / 0.08));
}

.mark {
  width: 0.5rem;
  height: 0.5rem;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: transparent;
}

.choice[aria-checked="true"] .mark {
  background: var(--neon);
  box-shadow: 0 0 8px var(--glow-neon);
}

/* —— buttons —— */

.actions {
  display: grid;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--space-touch);
  padding-inline: var(--space-lg);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  max-width: 100%;
  cursor: pointer;
  touch-action: manipulation;
}

.btn-fill {
  background: linear-gradient(100deg, var(--neon), var(--cyan));
  color: var(--neon-ink);
  box-shadow: 0 0 22px var(--glow-neon);
}

.btn-line,
.btn-ghost {
  border-color: var(--line-2);
  background: var(--card);
  color: var(--ink);
}

.btn-block {
  width: 100%;
}

@media (hover: hover) and (pointer: fine) {
  .btn-fill:hover,
  .btn-fill.is-hover {
    box-shadow: 0 0 36px var(--glow-cyan);
    filter: brightness(1.08);
  }

  .btn-line:hover,
  .btn-line.is-hover,
  .btn-ghost:hover,
  .btn-ghost.is-hover {
    border-color: var(--neon);
  }

  .choice:hover,
  .region-opt:hover,
  .lang-opt:hover {
    border-color: var(--line-2);
    background: var(--card-2);
  }

  .step,
  .why__chip,
  details {
    border-color: var(--line-2);
    background: var(--card-2);
  }
}

.btn:focus-visible,
.lang-btn:focus-visible,
.choice:focus-visible,
.region-opt:focus-visible,
.lang-opt:focus-visible,
a:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible {
  outline-color: var(--cyan);
  outline-offset: 2px;
}

.btn:active,
.btn.is-active,
.choice:active,
.lang-opt:active,
.region-opt:active {
  transform: translateY(1px);
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn[data-state="loading"],
.btn.is-loading {
  opacity: 0.7;
  cursor: progress;
}

.btn[data-state="error"],
.btn.is-error {
  background: var(--danger);
  color: oklch(99% 0.005 20);
  box-shadow: none;
}

.btn[data-state="success"],
.btn.is-success {
  background: linear-gradient(100deg, var(--neon), var(--cyan));
  filter: brightness(1.1);
}

/* —— task readout —— */

.signal {
  margin-top: var(--space-2xs);
  padding: var(--space-sm);
  background: oklch(11% 0.02 220 / 0.6);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-md);
}

.signal-k {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reward-figure {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  background: linear-gradient(100deg, var(--neon), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.link-line {
  margin-top: var(--space-3xs);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--cyan);
  overflow-wrap: anywhere;
  user-select: all;
}

.filing {
  display: grid;
  margin-top: var(--space-md);
}

.filing div {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: var(--space-sm);
  padding-block: var(--space-2xs);
}

.filing div + div {
  border-top: 1px solid var(--line);
}

.filing dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.3em;
}

.filing dd {
  overflow-wrap: anywhere;
  min-width: 0;
}

.undo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

/* —— footer —— */

.foot {
  padding-block: var(--space-xl) var(--space-lg);
  display: grid;
  gap: var(--space-2xs);
}

.foot > p {
  color: var(--muted);
  font-size: var(--text-sm);
}

.foot__line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--line);
}

.foot__line a {
  white-space: nowrap;
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  text-decoration: none;
  color: var(--cyan);
}

/* —— language sheet —— */

.lang-dialog {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: end center;
  padding: var(--space-md);
  background: var(--scrim);
}

.lang-dialog[hidden] {
  display: none;
}

.sheet {
  width: min(42rem, 100%);
  max-height: min(70dvh, 36rem);
  overflow: auto;
  padding: var(--space-md);
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-lg);
}

.sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.sheet-head h2 {
  font-size: var(--text-lg);
}

@media (min-width: 40rem) {
  .lang-dialog {
    place-items: center;
  }

  .hero__inner {
    width: min(42rem, 100%);
  }

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

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

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

  .badge i,
  .marquee__track {
    animation: none;
  }

  .btn:active,
  .btn.is-active,
  .choice:active,
  .lang-opt:active,
  .region-opt:active {
    transform: none;
  }
}

html[lang="zh-CN"] {
  --font-body: "Geist", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

html[lang="zh-TW"] {
  --font-body: "Geist", "PingFang TC", "Microsoft JhengHei", "Segoe UI", sans-serif;
}

html[lang="ja"] {
  --font-body: "Geist", "Yu Gothic UI", "Yu Gothic", "Hiragino Sans", "Segoe UI", sans-serif;
}

html[lang="ko"] {
  --font-body: "Geist", "Malgun Gothic", "Segoe UI", sans-serif;
}

html[lang="th"],
html[lang="ar"],
html[lang="ur"],
html[lang="fa"],
html[lang="hi"],
html[lang="bn"] {
  --font-display: var(--font-body);
}