:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-alt: #eef3f8;
  --text: #122033;
  --muted: #5f6f82;
  --primary: #0f2747;
  --primary-2: #1f8a70;
  --accent: #f59e0b;
  --border: #dbe3ec;
  --shadow: 0 12px 30px rgba(15, 39, 71, 0.08);
  --radius: 20px;
  --radius-sm: 14px;
  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Noto Sans TC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

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

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

p {
  margin: 0 0 1rem;
}

ul {
  margin: 0;
  padding-left: 1.2rem;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 1rem;
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.3rem, 5vw, 4.4rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.7rem);
}

h3 {
  font-size: 1.25rem;
}

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.eyebrow {
  color: var(--primary-2);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.84rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 64ch;
}

.section {
  padding: 5rem 0;
}

.section-head {
  max-width: 760px;
  margin-bottom: 2rem;
}

.section-head p:last-child {
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 247, 251, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(219, 227, 236, 0.8);
}

.nav-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 78px;
}

/* 品牌區塊：保留原本支援，也可直接用圖片 logo */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  font-weight: 800;
}

.brand-text {
  display: grid;
  line-height: 1.2;
}

.brand-text small {
  color: var(--muted);
}

.brand-logo {
  display: block;
  height: 56px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
}

.site-footer .brand-logo,
footer .brand-logo {
  height: 48px;
  max-width: 200px;
}

.main-nav,
.header-actions {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.main-nav a {
  color: var(--muted);
  font-weight: 500;
}

.main-nav a:hover {
  color: var(--primary);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 1.1rem;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0 1.1rem;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: 0.2s ease;
  cursor: pointer;
}

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

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: var(--surface);
  color: var(--primary);
  border-color: var(--border);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--primary);
}

.hero {
  padding: 5rem 0 3rem;
  background:
    radial-gradient(circle at top right, rgba(31, 138, 112, 0.12), transparent 32%),
    radial-gradient(circle at top left, rgba(15, 39, 71, 0.08), transparent 28%);
}

.hero-grid,
.split-grid,
.cta-box,
.footer-grid {
  display: grid;
  gap: 2rem;
}

.hero-grid {
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
}

.hero-actions,
.stack {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.hero-points {
  margin-top: 1.4rem;
  color: var(--muted);
}

.hero-card {
  background: linear-gradient(180deg, #fff, #f7fbfd);
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  box-shadow: var(--shadow);
}

.metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.metric-grid article,
.card,
.checklist-card,
.faq-list details,
.cta-box,
.info-card,
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.metric-grid article {
  padding: 1.2rem;
}

.metric-grid strong {
  display: block;
  font-size: 1.4rem;
  color: var(--primary);
}

.metric-grid span {
  color: var(--muted);
}

.hero-panel {
  margin-top: 1rem;
  padding: 1.4rem;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary), #16385f);
  color: #fff;
}

.hero-panel p {
  opacity: 0.92;
  margin-bottom: 0;
}

.trust-strip {
  padding: 0 0 1rem;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.trust-grid > div {
  background: rgba(255, 255, 255, 0.75);
  padding: 1rem 1.1rem;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.trust-grid strong {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--primary);
}

.trust-grid span {
  color: var(--muted);
  font-size: 0.96rem;
}

.section-dark {
  background: linear-gradient(180deg, #0f2747, #15385f);
  color: #fff;
}

.section-dark .eyebrow {
  color: #8fe1ca;
}

.section-dark p,
.section-dark li {
  color: rgba(255, 255, 255, 0.86);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.card {
  padding: 1.5rem;
}

.card p {
  color: var(--muted);
  margin-bottom: 0;
}

.featured {
  background: linear-gradient(135deg, rgba(31, 138, 112, 0.12), rgba(15, 39, 71, 0.06));
  border-color: rgba(31, 138, 112, 0.25);
}

.split-grid {
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
}

.checklist-card {
  padding: 1.5rem;
  color: var(--text);
}

.checklist-card h3,
.checklist-card p,
.checklist-card li {
  color: var(--text);
}

.checklist-card .checklist li::before {
  color: var(--primary-2);
}

.checklist {
  list-style: none;
  padding: 0;
}

.checklist li {
  position: relative;
  padding-left: 1.7rem;
  margin-bottom: 0.95rem;
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary-2);
  font-weight: 800;
}

.app-card {
  min-height: 180px;
  background: linear-gradient(180deg, #fff, #f8fafc);
}

.faq-list {
  display: grid;
  gap: 1rem;
}

.faq-list details {
  padding: 1.2rem 1.3rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list details p {
  margin-top: 0.8rem;
  color: var(--muted);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
}

.info-card,
.form-card {
  padding: 1.6rem;
}

.info-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.info-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.info-list li:last-child {
  border-bottom: none;
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.contact-form label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.9rem 1rem;
  font: inherit;
  background: #fff;
}

.contact-form textarea {
  min-height: 160px;
  resize: vertical;
}

.note {
  color: var(--muted);
  font-size: 0.95rem;
}

.cta-section {
  padding-top: 0;
}

.cta-box {
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  padding: 2rem;
  background: linear-gradient(135deg, #fff, #edf5f2);
}

.cta-actions.stack {
  flex-direction: column;
}

.site-footer {
  background: #0d1c32;
  color: rgba(255, 255, 255, 0.86);
  padding-top: 3rem;
}

.footer-grid {
  grid-template-columns: 1.1fr 1fr 1fr;
}

.site-footer h3,
.site-footer h4 {
  color: #fff;
}

.site-footer ul {
  list-style: none;
  padding: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 2rem;
  padding: 1rem 0 2rem;
  color: rgba(255, 255, 255, 0.65);
}

/* LINE 按鈕 */
.line-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  background: #06C755;
  color: #fff;
  text-decoration: none;
  border-radius: 10px;
  font-weight: 700;
  line-height: 1.2;
  border: 1px solid #06C755;
  box-shadow: 0 4px 10px rgba(6, 199, 85, 0.18);
  transition: all 0.2s ease;
}

.line-btn:hover {
  background: #05b34b;
  border-color: #05b34b;
  color: #fff;
  transform: translateY(-1px);
}

.line-btn:active {
  transform: translateY(0);
}

.line-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(6, 199, 85, 0.22);
}

/* 給螢幕閱讀器用 */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .main-nav,
  .header-actions {
    display: none;
  }

  .main-nav.is-open {
    display: flex;
    position: absolute;
    top: 78px;
    left: 1rem;
    right: 1rem;
    padding: 1rem;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: var(--shadow);
  }

  .hero-grid,
  .split-grid,
  .cta-box,
  .footer-grid,
  .card-grid,
  .trust-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 3.6rem;
  }

  .section {
    padding: 4rem 0;
  }

  .btn {
    width: 100%;
  }

  .hero-actions,
  .stack {
    flex-direction: column;
  }

  .metric-grid {
    grid-template-columns: 1fr 1fr;
  }

  .brand-logo {
    height: 46px;
    max-width: 180px;
  }

  .site-footer .brand-logo,
  footer .brand-logo {
    height: 40px;
    max-width: 160px;
  }
}