:root {
  --bg: #07111f;
  --bg-deep: #0d1b2a;
  --bg-soft: #0f2236;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-strong: rgba(255, 255, 255, 0.12);
  --line: rgba(255, 255, 255, 0.14);
  --text: #eaf2ff;
  --muted: #9eb0c9;
  --primary: #2f7cf6;
  --secondary: #35c7e8;
  --accent: #ff7a30;
  --light-bg: #f4f7fb;
  --light-card: #ffffff;
  --light-text: #10243a;
  --max: 1180px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --shadow: 0 24px 80px rgba(3, 9, 18, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(47, 124, 246, 0.22), transparent 28%),
    radial-gradient(circle at 80% 20%, rgba(53, 199, 232, 0.16), transparent 24%),
    linear-gradient(180deg, #06101d 0%, #081728 45%, #0a1320 100%);
  color: var(--text);
}

body.light-page {
  background: linear-gradient(180deg, #f8fbff 0%, #eef4fb 100%);
  color: var(--light-text);
}

body.has-modal-open {
  overflow: hidden;
}

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

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

.container {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(6, 16, 29, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.light-page .site-header {
  background: rgba(248, 251, 255, 0.84);
  border-bottom: 1px solid rgba(16, 36, 58, 0.08);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 86px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand img {
  width: 64px;
  height: 64px;
  object-fit: contain;
}

.brand-copy small {
  display: block;
  color: var(--muted);
  font-weight: 500;
  font-size: 12px;
}

.brand-copy strong {
  display: block;
  font-size: 15px;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  color: inherit;
  border-radius: 999px;
  padding: 10px 14px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.main-nav a {
  color: var(--muted);
  font-size: 14px;
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--text);
}

.light-page .main-nav a:hover,
.light-page .main-nav a.is-active {
  color: var(--light-text);
}

.lang-switch {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding-left: 8px;
  border-left: 1px solid var(--line);
}

.lang-switch a {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
}

.lang-switch a.current {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-color: transparent;
}

.hero {
  padding: 72px 0 44px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% 0 auto;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(53, 199, 232, 0.18), transparent 58%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: stretch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #cfe3ff;
  font-size: 13px;
}

.light-page .eyebrow {
  background: rgba(47, 124, 246, 0.08);
  border-color: rgba(47, 124, 246, 0.12);
  color: #1d4f98;
}

.hero-copy h1,
.page-hero h1 {
  margin: 18px 0 18px;
  font-size: clamp(40px, 6vw, 78px);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.hero-copy p,
.page-hero p {
  margin: 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 16px 40px rgba(47, 124, 246, 0.24);
}

.button-secondary {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.light-page .button-secondary {
  color: var(--light-text);
  background: rgba(255, 255, 255, 0.75);
}

.hero-panel,
.info-panel,
.case-card,
.product-card,
.metric-card,
.signal-card,
.step-card,
.legal-card,
.contact-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.light-page .hero-panel,
.light-page .info-panel,
.light-page .case-card,
.light-page .product-card,
.light-page .metric-card,
.light-page .signal-card,
.light-page .step-card,
.light-page .legal-card,
.light-page .contact-card {
  background: var(--light-card);
  border-color: rgba(16, 36, 58, 0.08);
  box-shadow: 0 24px 60px rgba(18, 43, 66, 0.08);
}

.hero-panel {
  padding: 26px;
  position: relative;
  overflow: hidden;
}

.hero-orbit {
  min-height: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(53, 199, 232, 0.22), transparent 28%),
    radial-gradient(circle at 70% 45%, rgba(47, 124, 246, 0.24), transparent 24%),
    linear-gradient(180deg, rgba(14, 34, 53, 0.92), rgba(7, 17, 31, 0.84));
  border-radius: 24px;
  padding: 28px;
}

.hero-orbit img {
  width: 68px;
}

.hero-orbit h2 {
  margin: 26px 0 12px;
  font-size: 28px;
  line-height: 1.12;
}

.hero-orbit p {
  color: #c2d5ef;
  line-height: 1.7;
  margin: 0 0 24px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.hero-stat {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat strong {
  display: block;
  font-size: 24px;
}

.hero-stat span {
  display: block;
  margin-top: 6px;
  color: #bdd2ee;
  font-size: 13px;
  line-height: 1.5;
}

.section {
  padding: 28px 0 92px;
}

.section.light {
  background: var(--light-bg);
  color: var(--light-text);
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  margin: 12px 0;
  font-size: clamp(28px, 4vw, 52px);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.section-head p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.light .section-head p,
.light-page .section-head p,
.light-page p.muted,
.light-page li.muted {
  color: #546b86;
}

.product-grid,
.case-grid,
.metrics-grid,
.signal-grid,
.steps-grid,
.legal-grid,
.contact-grid {
  display: grid;
  gap: 18px;
}

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

.product-card,
.case-card,
.metric-card,
.signal-card,
.step-card,
.legal-card,
.contact-card {
  padding: 24px;
}

.product-card h3,
.case-card h3,
.page-grid h2,
.info-panel h3,
.legal-card h3,
.contact-card h3 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.2;
}

.product-card p,
.case-card p,
.metric-card p,
.signal-card p,
.step-card p,
.info-panel p,
.legal-card p,
.contact-card p,
.split-copy p,
.split-copy li,
.page-copy p,
.page-copy li {
  color: var(--muted);
  line-height: 1.75;
}

.light-page .product-card p,
.light-page .case-card p,
.light-page .metric-card p,
.light-page .signal-card p,
.light-page .step-card p,
.light-page .info-panel p,
.light-page .legal-card p,
.light-page .contact-card p,
.light-page .split-copy p,
.light-page .split-copy li,
.light-page .page-copy p,
.light-page .page-copy li {
  color: #556c86;
}

.card-tag,
.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: rgba(53, 199, 232, 0.12);
  color: #8fe7ff;
}

.light-page .card-tag,
.light-page .chip {
  background: rgba(47, 124, 246, 0.08);
  color: #2361bc;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: #fff;
  font-weight: 700;
}

.light-page .card-link {
  color: #143a72;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.split.reverse .split-copy {
  order: 2;
}

.split-media {
  position: relative;
}

.glass-visual {
  border-radius: 26px;
  overflow: hidden;
  border: 1px solid rgba(16, 36, 58, 0.08);
  box-shadow: 0 30px 80px rgba(16, 36, 58, 0.14);
}

.glass-overlay {
  position: absolute;
  right: 22px;
  bottom: 22px;
  max-width: 240px;
  padding: 18px;
  border-radius: 18px;
  background: rgba(8, 19, 32, 0.78);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
}

.glass-overlay strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
}

.metrics-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-card strong {
  display: block;
  font-size: 32px;
  line-height: 1;
  margin-bottom: 8px;
}

.metric-card span {
  display: block;
  margin-bottom: 12px;
  font-size: 15px;
  font-weight: 700;
  color: #79d7f3;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.light-page .metric-card span {
  color: #2d79cf;
}

html[lang="en"] .metric-card span {
  min-height: 2.4em;
  line-height: 1.2;
}

.signal-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.steps-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.step-card strong {
  display: block;
  margin-bottom: 10px;
  color: #fff;
}

.light-page .step-card strong {
  color: var(--light-text);
}

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

.brand-rail {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0 32px;
}

.brand-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 96px;
  padding: 18px 14px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.brand-pill img {
  width: auto;
  max-width: 120px;
  max-height: 28px;
  filter: brightness(0) invert(1);
  opacity: 0.92;
}

.brand-pill.brand-pill-icon img {
  max-height: 22px;
}

.brand-pill span {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #c7d8ee;
}

.case-result {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-weight: 700;
}

.page-hero {
  padding: 72px 0 40px;
}

.page-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

.page-grid .info-panel {
  padding: 28px;
}

.page-copy ul,
.split-copy ul,
.legal-card ul {
  margin: 0;
  padding-left: 18px;
}

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

.contact-band {
  padding: 22px 0 84px;
}

.site-footer {
  padding: 26px 0 36px;
  border-top: 1px solid var(--line);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: inline-flex;
  gap: 16px;
  flex-wrap: wrap;
}

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

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 24px;
}

.contact-modal[hidden] {
  display: none;
}

.contact-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(7, 17, 31, 0.72);
  backdrop-filter: blur(10px);
}

.contact-modal__dialog {
  position: relative;
  width: min(760px, 100%);
  max-height: min(90vh, 920px);
  overflow: auto;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(14, 34, 53, 0.98), rgba(7, 17, 31, 0.98));
  box-shadow: 0 32px 90px rgba(3, 9, 18, 0.48);
}

.light-page .contact-modal__dialog,
body:not(.light-page) .contact-modal__dialog {
  color: var(--text);
}

.contact-modal__content {
  padding: 32px;
}

.contact-modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 22px;
  cursor: pointer;
}

.contact-modal__content h2 {
  margin: 16px 0 12px;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.contact-modal__intro {
  margin: 0 0 24px;
  max-width: 620px;
  color: #bdd2ee;
  line-height: 1.7;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.contact-field {
  display: grid;
  gap: 8px;
}

.contact-field span {
  font-size: 14px;
  color: #d8e7fb;
}

.contact-field input,
.contact-field textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  padding: 14px 16px;
  font: inherit;
}

.contact-field input::placeholder,
.contact-field textarea::placeholder {
  color: #8ea5c2;
}

.contact-field input:focus,
.contact-field textarea:focus {
  outline: 2px solid rgba(53, 199, 232, 0.32);
  outline-offset: 1px;
}

.contact-form__context {
  min-height: 22px;
  color: #8fe7ff;
  font-size: 14px;
}

.contact-form__error {
  margin: 0;
  color: #ffb58e;
  font-size: 14px;
}

.contact-form__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.contact-success h3 {
  margin: 0 0 12px;
  font-size: 28px;
}

.contact-success p {
  margin: 0 0 16px;
  color: #bdd2ee;
  line-height: 1.7;
}

.contact-success a {
  color: #8fe7ff;
}

@media (max-width: 980px) {
  .hero-grid,
  .split,
  .page-grid,
  .product-grid,
  .case-grid,
  .brand-rail,
  .metrics-grid,
  .signal-grid,
  .steps-grid,
  .legal-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .main-nav {
    position: absolute;
    top: 86px;
    left: 20px;
    right: 20px;
    padding: 18px;
    border-radius: 22px;
    background: rgba(7, 17, 31, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: none;
    flex-direction: column;
    align-items: flex-start;
  }

  .light-page .main-nav {
    background: rgba(255, 255, 255, 0.98);
  }

  .main-nav.is-open {
    display: flex;
  }

  .lang-switch {
    border-left: 0;
    padding-left: 0;
  }

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

  .hero {
    padding-top: 48px;
  }

  .hero-orbit {
    min-height: 320px;
  }

  .contact-form__grid {
    grid-template-columns: 1fr;
  }

  .contact-modal {
    padding: 16px;
  }

  .contact-modal__content {
    padding: 24px;
  }
}