:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-soft: #eef7f4;
  --surface-warm: #fff7e5;
  --ink: #1f2933;
  --muted: #5d6978;
  --line: #dce3ea;
  --teal: #00796b;
  --teal-dark: #005f54;
  --blue: #2386d1;
  --yellow: #f4b942;
  --purple: #6e56cf;
  --coral: #e85d75;
  --shadow: 0 18px 42px rgba(31, 41, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  line-height: 1.6;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 32px;
  background: rgba(247, 248, 251, 0.94);
  border-bottom: 1px solid rgba(220, 227, 234, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  color: var(--ink);
}

.brand img {
  flex: 0 0 auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--teal-dark);
  background: var(--surface-soft);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  gap: 48px;
  align-items: center;
  max-width: 1180px;
  min-height: 620px;
  margin: 0 auto;
  padding: 64px 32px 52px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--teal);
  font-size: 14px;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: 56px;
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 640px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 21px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
}

.button-primary {
  background: var(--teal);
  color: #ffffff;
}

.button-primary:hover {
  background: var(--teal-dark);
}

.button-secondary {
  background: var(--surface);
  border-color: var(--line);
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--teal);
  color: var(--teal-dark);
}

.hero-visual {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-items: stretch;
}

.visual-tile {
  display: grid;
  place-items: center;
  min-height: 148px;
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.visual-tile img {
  width: 96px;
  height: 96px;
}

.tile-large {
  grid-row: span 2;
  min-height: 310px;
  background: var(--surface-warm);
}

.tile-large img {
  width: 148px;
  height: 148px;
}

.section {
  padding: 74px 32px;
}

.section-muted {
  background: var(--surface-soft);
}

.section-contrast {
  background: #18262c;
  color: #f7fbfb;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.section-heading.align-left {
  margin: 0;
  text-align: left;
}

.section-heading h2,
.contact-panel h2 {
  margin: 0;
  font-size: 36px;
  line-height: 1.18;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.contact-panel p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.section-contrast .section-heading p:not(.eyebrow) {
  color: #c8d5d9;
}

.stat-grid,
.app-grid,
.feature-grid,
.studio-layout,
.contact-panel {
  max-width: 1180px;
  margin: 0 auto;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.stat-item {
  min-height: 126px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.stat-item strong {
  display: block;
  color: var(--teal-dark);
  font-size: 34px;
  line-height: 1;
}

.stat-item span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-weight: 700;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.app-card,
.feature-card,
.principle-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.app-card {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 18px;
  min-height: 260px;
  padding: 22px;
}

.app-status {
  margin: 0 0 6px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
}

.app-card h3,
.feature-card h3,
.principle-item h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
}

.app-card p:not(.app-status),
.feature-card p,
.principle-item p {
  margin: 12px 0 0;
  color: var(--muted);
}

.app-card a {
  display: inline-flex;
  margin-top: 18px;
  color: var(--teal-dark);
  font-weight: 850;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  min-height: 282px;
  padding: 26px;
  color: var(--ink);
}

.feature-card:nth-child(1) {
  border-color: rgba(244, 185, 66, 0.46);
  background: #fff8e8;
}

.feature-card:nth-child(2) {
  border-color: rgba(232, 93, 117, 0.35);
  background: #fff3f5;
}

.feature-card img {
  margin-bottom: 22px;
}

.studio-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 34px;
  align-items: start;
}

.principle-list {
  display: grid;
  gap: 14px;
}

.principle-item {
  min-height: 128px;
  padding: 22px;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 28px;
  align-items: center;
  padding: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.link-list {
  display: grid;
  gap: 12px;
}

.link-list a {
  display: flex;
  align-items: center;
  min-height: 50px;
  padding: 0 16px;
  background: #f9fbfc;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--teal-dark);
  font-weight: 850;
  text-decoration: none;
}

.link-list a:hover {
  border-color: var(--teal);
}

.site-footer {
  padding: 26px 32px;
  color: var(--muted);
  text-align: center;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
  font-size: 14px;
}

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 20px;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .site-nav a {
    flex: 0 0 auto;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding: 46px 20px 40px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-lead {
    font-size: 18px;
  }

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

  .visual-tile {
    min-height: 118px;
    padding: 12px;
  }

  .visual-tile img {
    width: 74px;
    height: 74px;
  }

  .tile-large {
    grid-row: auto;
    min-height: 118px;
  }

  .tile-large img {
    width: 74px;
    height: 74px;
  }

  .section {
    padding: 54px 20px;
  }

  .stat-grid,
  .app-grid,
  .feature-grid,
  .studio-layout,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .app-card {
    min-height: 0;
  }

  .contact-panel {
    padding: 22px;
  }
}

@media (max-width: 560px) {
  .brand span {
    font-size: 15px;
  }

  h1 {
    font-size: 36px;
  }

  .section-heading h2,
  .contact-panel h2 {
    font-size: 30px;
  }

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

  .app-card {
    grid-template-columns: 1fr;
  }

  .app-card img {
    width: 64px;
    height: 64px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}