:root {
  color-scheme: light;
  --teal-50: oklch(0.97 0.024 195);
  --teal-100: oklch(0.93 0.045 195);
  --teal-300: oklch(0.79 0.09 195);
  --teal-500: oklch(0.63 0.105 195);
  --teal-700: oklch(0.43 0.073 195);
  --teal-800: oklch(0.34 0.055 195);
  --canvas: oklch(0.975 0.016 77);
  --surface: oklch(0.992 0.008 77);
  --surface-muted: oklch(0.946 0.022 77);
  --ink: oklch(0.3 0.026 52);
  --ink-muted: oklch(0.48 0.025 52);
  --border: oklch(0.86 0.03 72);
  --clay: oklch(0.57 0.13 42);
  --focus: oklch(0.52 0.12 195);
  --shadow: 0 20px 55px oklch(0.3 0.04 52 / 0.12);
  --radius-sm: 0.75rem;
  --radius-md: 1.1rem;
  --radius-lg: 2rem;
  --page: min(72rem, calc(100% - 2.5rem));
  font-family: ui-rounded, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-synthesis: none;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 20rem;
  background: var(--canvas);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.72;
  overflow-wrap: anywhere;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--teal-700);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--teal-800);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--teal-800);
  color: var(--surface);
  transform: translateY(-180%);
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid color-mix(in oklch, var(--border), transparent 25%);
  background: color-mix(in oklch, var(--canvas), transparent 5%);
}

.header-inner {
  width: var(--page);
  min-height: 4.75rem;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-link {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.brand-link img {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.8rem;
}

.brand-link small {
  display: block;
  color: var(--ink-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.2rem;
}

.site-nav a {
  min-height: 2.75rem;
  padding: 0.55rem 0.8rem;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-sm);
  color: var(--ink-muted);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--teal-100);
  color: var(--teal-800);
}

.hero {
  width: var(--page);
  min-height: min(45rem, calc(100vh - 4.75rem));
  margin-inline: auto;
  padding-block: clamp(3.5rem, 8vw, 7.5rem);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(20rem, 1.1fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 7rem);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--teal-700);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.hero h1,
.page-intro h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(2.85rem, 7vw, 5.5rem);
  font-weight: 850;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.hero .lead {
  max-width: 33rem;
  margin: 1.7rem 0 0;
  color: var(--ink-muted);
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.65;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  min-height: 3.25rem;
  padding: 0.78rem 1.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--teal-800);
  font-weight: 800;
  text-decoration: none;
  transition: transform 150ms cubic-bezier(0.16, 1, 0.3, 1), background-color 150ms cubic-bezier(0.16, 1, 0.3, 1);
}

.button:hover {
  background: var(--teal-50);
  color: var(--teal-800);
  transform: translateY(-2px);
}

.button-primary {
  border-color: var(--teal-800);
  background: var(--teal-800);
  color: var(--surface);
}

.button-primary:hover {
  background: var(--teal-700);
  color: var(--surface);
}

.hero-visual {
  position: relative;
}

.hero-photo {
  width: 100%;
  min-height: 26rem;
  aspect-ratio: 1 / 0.82;
  border-radius: 42% 1.5rem 42% 1.5rem;
  box-shadow: var(--shadow);
  object-fit: cover;
}

.hero-logo {
  position: absolute;
  right: -1.2rem;
  bottom: -2.1rem;
  width: clamp(8.5rem, 19vw, 13rem);
  height: clamp(8.5rem, 19vw, 13rem);
  aspect-ratio: 1;
  border: 0.65rem solid var(--canvas);
  border-radius: 2rem;
  background: var(--surface);
  box-shadow: 0 14px 32px oklch(0.3 0.04 52 / 0.14);
  object-fit: contain;
}

.trust-strip {
  background: var(--teal-800);
  color: var(--surface);
}

.trust-inner {
  width: var(--page);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 5vw, 4.5rem);
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 7vw, 6rem);
}

.trust-strip h2,
.section-title {
  margin: 0;
  font-size: clamp(1.85rem, 3.7vw, 3rem);
  line-height: 1.15;
}

.trust-strip p {
  max-width: 62ch;
  margin: 0;
  color: var(--teal-100);
}

.feature-list {
  width: var(--page);
  margin-inline: auto;
  padding-block: clamp(4rem, 8vw, 7rem);
}

.feature-list > header {
  max-width: 48rem;
  margin-bottom: 2.5rem;
}

.feature-list > header p {
  color: var(--ink-muted);
}

.feature-row {
  padding-block: 1.6rem;
  display: grid;
  grid-template-columns: 8rem minmax(12rem, 0.75fr) minmax(16rem, 1.25fr);
  gap: 1.5rem;
  align-items: baseline;
  border-top: 1px solid var(--border);
}

.feature-row:last-child {
  border-bottom: 1px solid var(--border);
}

.feature-index {
  color: var(--teal-700);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.feature-row h3 {
  margin: 0;
  font-size: 1.25rem;
}

.feature-row p {
  max-width: 50rem;
  margin: 0;
  color: var(--ink-muted);
}

.legal-callout {
  background: var(--surface-muted);
}

.legal-callout-inner {
  width: var(--page);
  margin-inline: auto;
  padding-block: clamp(3rem, 6vw, 5.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
}

.legal-callout h2 {
  margin: 0;
  font-size: clamp(1.65rem, 3vw, 2.5rem);
}

.legal-callout p {
  max-width: 55ch;
  margin: 0.7rem 0 0;
  color: var(--ink-muted);
}

.page-intro {
  width: var(--page);
  margin-inline: auto;
  padding-block: clamp(3.5rem, 8vw, 7rem) clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--border);
}

.page-intro h1 {
  max-width: 16ch;
  font-size: clamp(2.6rem, 6vw, 5.1rem);
}

.page-intro .summary {
  max-width: 45rem;
  margin: 1.5rem 0 0;
  color: var(--ink-muted);
  font-size: 1.12rem;
}

.effective-date {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.document-layout {
  width: var(--page);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 6vw, 5.5rem);
  display: grid;
  grid-template-columns: minmax(11rem, 0.34fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: start;
}

.document-layout > *,
.document-toc nav,
.page-intro .summary {
  min-width: 0;
}

.document-toc {
  position: sticky;
  top: 6.5rem;
}

.document-toc strong {
  display: block;
  margin-bottom: 0.7rem;
  color: var(--ink);
  font-size: 0.85rem;
}

.document-toc a {
  min-height: 2.5rem;
  display: flex;
  align-items: center;
  color: var(--ink-muted);
  font-size: 0.9rem;
  text-decoration: none;
}

.document-toc a:hover {
  color: var(--teal-700);
}

.document {
  max-width: 47rem;
}

.document section {
  padding-block: 0 2.8rem;
  scroll-margin-top: 6.5rem;
}

.document section + section {
  padding-top: 2.8rem;
  border-top: 1px solid var(--border);
}

.document h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.45rem, 2.2vw, 1.9rem);
  line-height: 1.3;
}

.document h3 {
  margin: 1.7rem 0 0.55rem;
  font-size: 1.05rem;
}

.document p,
.document ul,
.document ol {
  max-width: 70ch;
}

.document ul,
.document ol {
  padding-left: 1.4rem;
}

.document li + li {
  margin-top: 0.6rem;
}

.plain-note,
.action-panel {
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.plain-note strong,
.action-panel strong {
  display: block;
  margin-bottom: 0.35rem;
}

.warning-note {
  background: oklch(0.94 0.055 82);
}

.step-list {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.step-list li {
  min-height: 4.5rem;
  padding: 1.15rem 0 1.15rem 4.3rem;
  position: relative;
  border-top: 1px solid var(--border);
  counter-increment: steps;
}

.step-list li::before {
  width: 2.7rem;
  height: 2.7rem;
  position: absolute;
  top: 1rem;
  left: 0;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--teal-100);
  color: var(--teal-800);
  content: counter(steps, decimal-leading-zero);
  font-size: 0.78rem;
  font-weight: 850;
}

.support-topics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0 1.5rem;
}

.support-topic {
  padding-block: 1.25rem;
  border-top: 1px solid var(--border);
}

.support-topic h3 {
  margin: 0 0 0.4rem;
}

.support-topic p {
  margin: 0;
  color: var(--ink-muted);
}

.site-footer {
  background: var(--teal-800);
  color: var(--teal-100);
}

.footer-inner {
  width: var(--page);
  margin-inline: auto;
  padding-block: 3rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
}

.footer-brand {
  color: var(--surface);
  font-size: 1.2rem;
  font-weight: 850;
}

.footer-inner p {
  max-width: 48rem;
  margin: 0.45rem 0 0;
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-content: flex-start;
  gap: 0.35rem 1rem;
}

.footer-links a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  color: var(--surface);
}

[hidden] {
  display: none !important;
}

@media (max-width: 56rem) {
  .header-inner {
    padding-block: 0.8rem;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.5rem;
  }

  .site-header {
    position: static;
  }

  .site-nav {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.2rem;
  }

  .site-nav a {
    white-space: nowrap;
  }

  .hero,
  .trust-inner,
  .legal-callout-inner,
  .document-layout,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
  }

  .hero-visual {
    width: calc(100% - 1rem);
  }

  .document-toc {
    position: static;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
  }

  .document-toc nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
    gap: 0 1rem;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 39rem) {
  :root {
    --page: min(100% - 1.5rem, 72rem);
  }

  .hero h1,
  .page-intro h1 {
    letter-spacing: -0.04em;
  }

  .hero-photo {
    min-height: 18rem;
    border-radius: 32% 1.2rem 32% 1.2rem;
  }

  .hero-logo {
    right: -1rem;
    bottom: -1.7rem;
    border-width: 0.45rem;
    border-radius: 1.4rem;
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .legal-callout-inner {
    align-items: start;
  }

  .hero-actions .button,
  .legal-callout .button {
    width: 100%;
  }

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

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .document-toc,
  .hero-actions {
    display: none;
  }

  body {
    background: var(--surface);
    color: var(--ink);
    font-size: 11pt;
  }

  .page-intro,
  .document-layout {
    width: 100%;
    padding: 0 0 1rem;
    display: block;
  }

  .document {
    max-width: none;
  }
}