:root {
  --brand-red: #c4001a;
  --brand-red-light: #f04a5d;
  --brand-gray-900: #2b2b2b;
  --brand-gray-500: #767676;
  --brand-gray-100: #f3f4f6;
  --color-primary: #2b2b2b;
  --color-accent: #2b2b2b;
  --color-accent-light: #767676;
  --color-bg: #f6f6f6;
  --color-surface: #ffffff;
  --color-surface-alt: #f0f0f0;
  --color-text: #1d1d1d;
  --color-text-muted: #666666;
  --color-border: rgba(43, 43, 43, 0.12);
  --shadow-soft: 0 18px 50px rgba(0, 0, 0, 0.08);
  --shadow-strong: 0 24px 70px rgba(0, 0, 0, 0.16);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container-max: 1180px;
  --container-padding: 20px;
  --container: min(
    var(--container-max),
    calc(100vw - (var(--container-padding) * 2))
  );
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;
  --hero-min-height: 78vh;
  --font-display: "Segoe UI", "Noto Sans TC", sans-serif;
  --font-body: "Segoe UI", "Noto Sans TC", sans-serif;
}

*:focus {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--brand-red);
  outline-offset: 3px;
  border-radius: 3px;
}

button:focus-visible,
a:focus-visible {
  outline-offset: 3px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
}

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

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

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

.page {
  overflow-x: clip;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 var(--space-2);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-accent);
}

.section-title,
.hero__title,
.page-banner__title,
.stakeholder-card__title,
.footer__brand,
.cert-card__value,
.market-card__value {
  font-family: var(--font-display);
}

.section {
  padding: var(--space-8) 0;
}

.section__header {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--space-5);
  align-items: end;
  margin-bottom: var(--space-5);
}

.section__title {
  margin: 0;
  font-size: clamp(2rem, 3.5vw, 3.5rem);
  line-height: 1.05;
}

.section__copy,
.hero__copy,
.footer__copy,
.page-banner__copy,
.stakeholder-card__copy,
.file-list__meta,
.cert-card__label,
.market-card__label,
.breadcrumb__link,
.navbar__link {
  color: var(--color-text-muted);
}

.section__copy,
.hero__copy,
.page-banner__copy,
.stakeholder-card__copy {
  font-size: 1.02rem;
  line-height: 1.8;
}

.navbar {
  position: relative;
  z-index: 20;
}

.navbar__toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.navbar__toggle svg {
  width: 18px;
  height: 18px;
}

.navbar__inner {
  width: var(--container);
  margin: 0 auto;
  min-height: 78px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-4);
}

.navbar__drawer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand__logo {
  display: block;
  width: auto;
  height: 42px;
}

.navbar__menu {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: center;
}

.navbar__tools {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar__search {
  position: relative;
  display: flex;
  align-items: center;
}

.search-toggle {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  color: var(--color-text);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.search-toggle:hover,
.search-toggle:focus-visible,
.search-toggle.is-active {
  transform: translateY(-1px);
  border-color: rgba(196, 0, 26, 0.24);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}

.search-toggle svg {
  width: 16px;
  height: 16px;
}

.search-panel {
  width: 0;
  margin-left: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  border: 0 solid transparent;
  border-radius: 999px;
  background: transparent;
  box-shadow: none;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
  transform: translateX(8px);
  transition:
    width 240ms ease,
    margin-left 240ms ease,
    padding 240ms ease,
    border-width 240ms ease,
    opacity 180ms ease,
    transform 240ms ease,
    background-color 240ms ease;
}

.search-panel.is-open {
  width: 220px;
  margin-left: 8px;
  padding: 4px;
  border-width: 1px;
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
  background: var(--color-surface);
}

.search-panel__input {
  width: 100%;
  min-width: 0;
  min-height: 30px;
  padding: 0 12px;
  border: 0;
  outline: 0;
  border-radius: 999px;
  background: var(--color-surface-alt);
  color: var(--color-text);
  font-size: 0.84rem;
}

.search-panel__submit {
  flex: 0 0 auto;
  min-width: 30px;
  min-height: 30px;
  padding: 0 10px;
  border: 0;
  border-radius: 999px;
  background: var(--color-accent);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.78rem;
  transition: transform 180ms ease, filter 180ms ease;
}

.search-panel__submit:hover,
.search-panel__submit:focus-visible {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.navbar__link {
  position: relative;
  font-size: 0.95rem;
  font-weight: 600;
}

.navbar__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--color-accent);
  transition: transform 180ms ease;
}

.navbar__link:hover::after,
.navbar__link:focus-visible::after {
  transform: scaleX(1);
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  min-height: 38px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
}

.lang-switcher__button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 700;
}

.lang-switcher__button.is-active {
  color: var(--color-accent);
}

.lang-switcher__divider {
  color: var(--color-text-muted);
  opacity: 0.6;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

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

.button--primary {
  background: var(--color-accent);
  color: #fff;
}

.button--secondary {
  border-color: var(--color-border);
  background: rgba(255, 255, 255, 0.6);
}

.hero {
  position: relative;
  min-height: var(--hero-min-height);
}

.hero__inner {
  width: var(--container);
  min-height: calc(var(--hero-min-height) - 78px);
  margin: 0 auto;
  display: grid;
  align-items: center;
  gap: var(--space-5);
  position: relative;
  z-index: 2;
}

.hero__content {
  max-width: 720px;
}

.hero__title {
  margin: 0 0 var(--space-4);
  font-size: clamp(2.8rem, 7vw, 6rem);
  line-height: 0.94;
  letter-spacing: -0.03em;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.hero__visual,
.hero__panel,
.hero__stat-grid,
.hero__media {
  position: relative;
}

.hero__visual-card,
.cert-card,
.market-card,
.stakeholder-teaser,
.stakeholder-card,
.file-list,
.table-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.hero__visual-card {
  min-height: 420px;
  padding: var(--space-5);
}

.hero__visual-grid,
.cert-grid,
.market-grid,
.stakeholder-grid,
.footer__grid,
.stakeholder-layout,
.report-layout {
  display: grid;
  gap: var(--space-4);
}

.cert-grid,
.market-grid,
.stakeholder-grid,
.footer__grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.hero__metric,
.cert-card,
.market-card,
.stakeholder-card {
  padding: var(--space-4);
}

.hero__metric-value,
.cert-card__value,
.market-card__value {
  display: block;
  margin-top: 8px;
  font-size: 2rem;
  line-height: 1;
}

.hero__metric-label,
.cert-card__label,
.market-card__label {
  font-size: 0.92rem;
}

.cert-card__title,
.market-card__title,
.stakeholder-card__title,
.file-list__title {
  margin: 0 0 var(--space-2);
  font-size: 1.18rem;
}

.stakeholder-teaser {
  padding: var(--space-5);
}

.stakeholder-teaser__cta {
  margin-top: var(--space-4);
}

.footer {
  padding: var(--space-7) 0 var(--space-5);
  border-top: 1px solid var(--color-border);
}

.footer__grid {
  align-items: start;
}

.footer__brand {
  display: grid;
  align-content: start;
  gap: var(--space-4);
}

.footer__nav-group {
  grid-column: span 2;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-4);
}

.footer__col {
  display: grid;
  align-content: start;
  gap: 12px;
}

.footer__title {
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: left;
}

.footer__toggle {
  cursor: default;
}

.footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.stakeholder-layout {
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  align-items: start;
}

.stakeholder-card {
  height: 100%;
}

.stakeholder-card__meta {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.report-layout {
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  align-items: start;
}

.file-list {
  overflow: hidden;
}

.file-list__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 120px 100px;
  gap: var(--space-3);
  align-items: center;
  padding: 18px 22px;
  border-top: 1px solid var(--color-border);
}

.file-list__row:first-child {
  border-top: 0;
}

.file-list__name {
  font-weight: 700;
}

.file-list__meta {
  font-size: 0.92rem;
}

.table-card {
  padding: var(--space-4);
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

.data-table th,
.data-table td {
  padding: 14px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--space-4);
}

.tab-button {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  font-weight: 700;
}

.tab-button.is-active {
  color: #fff;
  background: var(--color-accent);
  border-color: var(--color-accent);
}

[data-tab-panel] {
  display: none;
}

[data-tab-panel].is-active {
  display: block;
}

.hero--video {
  color: #fff;
}

.hero__video-wrap,
.hero__video,
.hero__overlay {
  position: absolute;
  inset: 0;
}

.hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  background: rgba(15, 15, 18, 0.48);
}

.hero__hint {
  margin-top: var(--space-4);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.72);
}

@media (max-width: 960px) {
  .section__header,
  .hero__inner,
  .cert-grid,
  .market-grid,
  .stakeholder-grid,
  .stakeholder-layout,
  .report-layout,
  .file-list__row {
    grid-template-columns: 1fr;
  }

  .navbar__inner {
    padding: 12px 0;
    align-items: center;
    grid-template-columns: 1fr auto;
  }

  .navbar__toggle {
    display: inline-flex;
    justify-self: end;
  }

  .navbar--collapsible .navbar__drawer {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
    z-index: 35;
    width: 100%;
    max-width: var(--container);
    padding: 10px 16px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .navbar--collapsible.is-mobile-open .navbar__drawer {
    display: flex;
  }

  .navbar__menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .navbar__tools {
    width: 100%;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
  }

  .search-panel {
    width: 0;
    min-width: 0;
    border-radius: var(--radius-md);
  }

  .search-panel.is-open {
    width: min(100%, 220px);
  }

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

  .hero__inner {
    padding: 40px 0 64px;
    min-height: auto;
  }

  .hero__title {
    font-size: 2.8rem;
  }

  .section {
    padding: 72px 0;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer__nav-group {
    grid-column: auto;
    grid-template-columns: 1fr;
    gap: 0;
  }

  .footer__col {
    gap: 0;
    border-top: 1px solid var(--color-border);
  }

  .footer__toggle {
    width: 100%;
    position: relative;
    padding: 16px 0;
    cursor: pointer;
  }

  .footer__toggle::after {
    content: "+";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    line-height: 1;
  }

  .footer__toggle.is-open::after {
    content: "-";
  }

  .footer__list {
    display: none;
    padding: 0 0 16px;
  }

  .footer__list.is-open {
    display: grid;
  }
}

@media (max-width: 640px) {
  :root {
    --container: min(1180px, calc(100vw - 28px));
  }

  .hero__actions,
  .tabs,
  .navbar__tools {
    width: 100%;
  }

  .button,
  .tab-button {
    width: 100%;
  }

  .navbar__search,
  .lang-switcher {
    width: auto;
  }
}