:root {
  --color-primary: #e63946;
  --color-primary-muted: #fce6eb;
  --color-bg: #f1faee;
  --color-surface: rgba(255, 255, 255, 0.9);
  --color-text: #1f2933;
  --color-text-muted: #52606d;
  --color-accent: #2a9d8f;
  --color-warning: #ffb319;
  --gradient-hero: linear-gradient(135deg, rgba(230, 57, 70, 0.14), rgba(42, 157, 143, 0.1));
  --font-body: "Noto Sans TC", "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Noto Sans JP", "Inter", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100%;
}

body {
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem clamp(1.5rem, 5vw, 3.5rem);
  background: rgba(241, 250, 238, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(82, 96, 109, 0.15);
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  grid-template-columns: repeat(2, 1fr);
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
}

.brand-name {
  font-weight: 700;
  margin: 0;
}

.brand-tagline {
  font-size: 0.85rem;
  margin: 0.1rem 0 0;
  color: var(--color-text-muted);
}

.site-header__nav {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.link {
  background: none;
  border: none;
  font: inherit;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.link:hover,
.link:focus-visible {
  background: rgba(230, 57, 70, 0.12);
  color: var(--color-primary);
  outline: none;
}

.language-switcher select {
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(82, 96, 109, 0.2);
  font: inherit;
  background: #fff;
  color: var(--color-text);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 6vw, 4rem);
  align-items: center;
  padding: clamp(3rem, 8vw, 6rem) clamp(1.5rem, 5vw, 3.5rem);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  border-radius: 36px;
  transform: translateY(-10%);
  z-index: -1;
}

.hero__content h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.hero__subtitle {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 12px 24px rgba(230, 57, 70, 0.25);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(230, 57, 70, 0.28);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.7);
  color: var(--color-primary);
  border: 1px solid rgba(230, 57, 70, 0.3);
}

.hero__highlights {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.hero__highlights li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.hero__highlights span {
  display: inline-flex;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--color-primary);
}

.hero__visual {
  display: flex;
  justify-content: center;
}

.hero__card {
  width: min(100%, 420px);
  background: rgba(255, 255, 255, 0.95);
  border-radius: 24px;
  box-shadow: 0 24px 48px rgba(82, 96, 109, 0.16);
  overflow: hidden;
  border: 1px solid rgba(230, 57, 70, 0.12);
}

.hero__card-header {
  display: flex;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  background: rgba(230, 57, 70, 0.08);
}

.hero__card-header .dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--color-primary);
}

.hero__card-body {
  padding: 1.5rem;
}

.hero__card-body h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.hero__preview-stats {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: grid;
  gap: 0.9rem;
}

.hero__preview-stats li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.hero__preview-stats strong {
  font-size: 1.05rem;
  color: var(--color-text);
}

.section {
  padding: clamp(3rem, 7vw, 5rem) clamp(1.5rem, 5vw, 3.5rem);
}

.section--alt {
  background: rgba(255, 255, 255, 0.8);
  border-radius: 36px;
  margin: clamp(2rem, 6vw, 4rem) clamp(1.5rem, 5vw, 3.5rem);
}

.section__header {
  max-width: 720px;
  margin-bottom: 2rem;
}

.section__header h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.3rem);
  margin-bottom: 0.75rem;
}

.section__header p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.feature-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.feature-card {
  background: rgba(255, 255, 255, 0.92);
  border-radius: 20px;
  padding: 1.75rem;
  border: 1px solid rgba(82, 96, 109, 0.12);
  box-shadow: 0 18px 36px rgba(82, 96, 109, 0.08);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.feature-card__icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(230, 57, 70, 0.12);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
}

.feature-card h3 {
  margin: 0;
  font-size: 1.15rem;
}

.feature-card p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.5rem;
  counter-reset: step;
}

.process-item {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 18px;
  padding: 1.5rem 1.75rem;
  border: 1px solid rgba(42, 157, 143, 0.2);
  display: grid;
  gap: 0.75rem;
  position: relative;
}

.process-item::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -18px;
  left: 1.5rem;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--color-accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
}

.process-item h3 {
  margin: 0;
  font-size: 1.1rem;
}

.process-item p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.trust-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.trust-card {
  background: rgba(255, 255, 255, 0.92);
  border-radius: 20px;
  padding: 1.75rem;
  border: 1px solid rgba(82, 96, 109, 0.12);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.trust-card h3 {
  margin: 0;
  font-size: 1.05rem;
}

.trust-card p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.section--cta {
  padding-bottom: clamp(4rem, 8vw, 6rem);
}

.cta-card {
  background: radial-gradient(circle at top left, rgba(230, 57, 70, 0.2), rgba(42, 157, 143, 0.15));
  border-radius: 28px;
  padding: clamp(2.5rem, 5vw, 3.5rem);
  text-align: center;
  color: var(--color-text);
  box-shadow: 0 24px 48px rgba(82, 96, 109, 0.14);
  display: grid;
  gap: 1.5rem;
}

.cta-card__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.cta-card__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.cta-card__qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.qr-code {
  width: 180px;
  height: 180px;
  border-radius: 16px;
  background: #fff;
  padding: 12px;
  box-shadow: 0 8px 24px rgba(82, 96, 109, 0.12);
  border: 2px solid rgba(230, 57, 70, 0.1);
}

.qr-code__hint {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

@media (min-width: 768px) {
  .cta-card__content {
    flex-direction: row;
    justify-content: center;
    gap: 3rem;
  }
}

.site-footer {
  padding: 2rem clamp(1.5rem, 5vw, 3.5rem);
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(82, 96, 109, 0.15);
  background: rgba(255, 255, 255, 0.7);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-meta {
  width: 100%;
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

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

@media (max-width: 960px) {
  .site-header {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .site-header__nav {
    flex-wrap: wrap;
  }

  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__highlights li {
    justify-content: center;
  }

  .hero__visual {
    order: -1;
  }

  .section--alt {
    margin: clamp(1.5rem, 5vw, 3rem) clamp(1rem, 4vw, 2.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}