:root {
  --bg: #ffffff;
  --bg-soft: #f6f9ff;
  --bg-blue: #eef6ff;
  --text: #0f172a;
  --muted: #5b677d;
  --line: #dce7f5;
  --primary: #1769ff;
  --primary-dark: #0d49c7;
  --cyan: #15b8d4;
  --green: #21a67a;
  --card: #ffffff;
  --shadow: 0 22px 60px rgba(20, 60, 120, 0.12);
  --radius: 20px;
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans TC", "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

body.nav-open {
  overflow: hidden;
}

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

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

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

.section {
  padding: 96px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(220, 231, 245, 0.74);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: block;
  border-radius: 12px;
  box-shadow: 0 12px 26px rgba(23, 105, 255, 0.24);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
}

.nav-links a {
  transition: color 160ms ease;
}

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

.nav-cta {
  color: var(--primary);
  padding: 10px 16px;
  border: 1px solid rgba(23, 105, 255, 0.24);
  border-radius: 999px;
  background: #f4f8ff;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #ffffff;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--text);
  border-radius: 999px;
}

.hero {
  padding: 112px 0 88px;
  background:
    radial-gradient(circle at 82% 10%, rgba(21, 184, 212, 0.16), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, #ffffff 82%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  gap: 64px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--primary);
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.35;
}

.hero-subtitle {
  max-width: 720px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 44px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background 160ms ease;
}

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

.button-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), #0f7dff);
  box-shadow: 0 16px 34px rgba(23, 105, 255, 0.28);
}

.button-secondary {
  color: var(--primary-dark);
  background: #ffffff;
  border-color: rgba(23, 105, 255, 0.22);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  max-width: 720px;
}

.hero-proof div {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.75);
}

.hero-proof strong,
.hero-proof span {
  display: block;
}

.hero-proof strong {
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 14px;
}

.hero-proof span {
  color: var(--muted);
  font-size: 14px;
}

.hero-panel {
  position: relative;
  padding: 26px;
  border: 1px solid rgba(220, 231, 245, 0.92);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(246, 249, 255, 0.96));
  box-shadow: var(--shadow);
}

.panel-top,
.visibility-score,
.platform-list > div,
.insight-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #ffffff;
}

.panel-top {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  color: var(--muted);
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 14px;
  font-weight: 700;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(33, 166, 122, 0.13);
}

.visibility-score {
  margin: 16px 0;
  padding: 24px;
  background: linear-gradient(135deg, #0f172a, #174ea6);
  color: #ffffff;
}

.visibility-score span,
.visibility-score strong {
  display: block;
}

.visibility-score span {
  opacity: 0.82;
  font-weight: 600;
}

.visibility-score strong {
  margin-top: 10px;
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 58px;
  line-height: 1;
}

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

.platform-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
}

.platform-item span:last-child {
  font-weight: 700;
}

.check-icon {
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  font-size: 16px;
  font-weight: 900;
  box-shadow: 0 8px 18px rgba(33, 166, 122, 0.18);
}

.insight-card {
  margin-top: 16px;
  padding: 18px;
}

.insight-card span {
  color: var(--primary);
  font-weight: 800;
  font-size: 13px;
  text-transform: uppercase;
}

.insight-card p {
  margin: 8px 0 0;
  color: var(--muted);
}

.problem-section,
.services-section,
.workflow-section {
  background: var(--bg-soft);
}

.two-column,
.section-heading-row,
.contact-grid,
.cta-box {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.section-copy,
.center-heading p,
.section-heading-row p {
  color: var(--muted);
  font-size: 18px;
}

.section-copy p:last-child,
.center-heading p:last-child,
.section-heading-row p:last-child {
  margin-bottom: 0;
}

.center-heading {
  max-width: 820px;
  text-align: center;
}

.geo-grid,
.service-grid,
.case-grid,
.steps {
  display: grid;
  gap: 22px;
  margin-top: 42px;
}

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

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

.case-grid {
  grid-template-columns: repeat(2, 1fr);
}

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

.feature-card,
.service-card,
.case-card,
.step-card,
.contact-form,
.contact-note {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: 0 12px 34px rgba(20, 60, 120, 0.06);
}

.feature-card,
.service-card,
.step-card {
  padding: 26px;
}

.feature-card p,
.service-card p,
.step-card p,
.case-content p,
.site-footer p {
  color: var(--muted);
}

.icon-badge,
.step-card span,
.case-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  padding: 0 12px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: var(--bg-blue);
  color: var(--primary);
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.service-card {
  min-height: 190px;
}

.service-card-wide {
  grid-column: span 2;
  background: linear-gradient(135deg, #ffffff, #eef6ff);
}

.case-card {
  overflow: hidden;
}

.case-image {
  aspect-ratio: 16 / 10;
}

.placeholder-image {
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(23, 105, 255, 0.12), rgba(21, 184, 212, 0.12)),
    repeating-linear-gradient(45deg, transparent 0 12px, rgba(23, 105, 255, 0.05) 12px 24px);
  color: var(--primary-dark);
  font-family: "Inter", "Noto Sans TC", sans-serif;
  font-size: 13px;
  font-weight: 800;
}

.case-content {
  padding: 24px;
}

.case-meta,
.rank-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.case-meta span,
.rank-list span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.rank-list span {
  background: var(--bg-blue);
  color: var(--primary-dark);
}

.result-grid,
.before-after {
  display: grid;
  gap: 12px;
  margin: 18px 0;
}

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

.before-after {
  grid-template-columns: repeat(2, 1fr);
}

.result-grid div,
.before-after div {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #ffffff;
}

.result-grid span,
.before-after span,
.result-grid small,
.before-after small {
  display: block;
}

.result-grid span,
.before-after span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.result-grid strong,
.before-after strong {
  display: block;
  margin: 6px 0 4px;
  color: var(--green);
  font-size: 18px;
  line-height: 1.25;
}

.result-grid small,
.before-after small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.case-outcome {
  margin-bottom: 0;
  padding-top: 2px;
  font-weight: 600;
}

.cta-section {
  padding: 76px 0;
  background: #ffffff;
}

.cta-box {
  align-items: center;
  padding: 46px;
  border-radius: 28px;
  color: #ffffff;
  background:
    radial-gradient(circle at 92% 20%, rgba(21, 184, 212, 0.36), transparent 28%),
    linear-gradient(135deg, #0f172a, #144fbf);
  box-shadow: var(--shadow);
}

.cta-box .eyebrow {
  color: #8fdcff;
}

.cta-box h2 {
  margin-bottom: 0;
}

.cta-box .button {
  justify-self: end;
  background: #ffffff;
  color: var(--primary-dark);
  box-shadow: none;
}

.contact-section {
  background: linear-gradient(180deg, var(--bg-soft), #ffffff);
}

.contact-grid {
  grid-template-columns: 0.85fr 1.15fr;
}

.contact-note {
  display: grid;
  gap: 4px;
  max-width: 360px;
  padding: 20px;
}

.contact-note span {
  color: var(--muted);
}

.contact-form {
  padding: 28px;
}

.form-row {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

label {
  font-weight: 800;
  font-size: 14px;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 14px;
  color: var(--text);
  background: #ffffff;
  font: inherit;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: rgba(23, 105, 255, 0.72);
  box-shadow: 0 0 0 4px rgba(23, 105, 255, 0.1);
}

.form-button {
  width: 100%;
}

.form-status {
  min-height: 24px;
  margin: 14px 0 0;
  color: var(--green);
  font-weight: 700;
}

.form-status.error {
  color: #c13535;
}

.site-footer {
  padding: 54px 0 24px;
  background: #0f172a;
  color: #ffffff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
}

.footer-brand {
  margin-bottom: 16px;
}

.site-footer p {
  max-width: 520px;
  margin-bottom: 0;
  color: #aebbd2;
}

.site-footer strong,
.site-footer a {
  display: block;
}

.site-footer strong {
  margin-bottom: 10px;
}

.site-footer a {
  color: #dbe8ff;
  margin-bottom: 8px;
}

.copyright {
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: #aebbd2;
  font-size: 14px;
}

@media (max-width: 980px) {
  .section {
    padding: 76px 0;
  }

  .hero {
    padding-top: 86px;
  }

  .hero-grid,
  .two-column,
  .section-heading-row,
  .contact-grid,
  .cta-box {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-panel {
    max-width: 620px;
  }

  .geo-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-box .button {
    justify-self: start;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    inset: 76px 14px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #ffffff;
    box-shadow: var(--shadow);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 14px;
    border-radius: 12px;
  }

  .nav-links a:hover {
    background: var(--bg-soft);
  }

  .hero-proof,
  .service-grid,
  .steps {
    grid-template-columns: 1fr;
  }

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

  .hero-panel {
    padding: 18px;
    border-radius: 22px;
  }

  .visibility-score strong {
    font-size: 44px;
  }

  .service-card-wide {
    grid-column: auto;
  }

  .result-grid,
  .before-after {
    grid-template-columns: 1fr;
  }

  .cta-box {
    padding: 30px;
    border-radius: 22px;
  }

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

@media (max-width: 520px) {
  .brand {
    font-size: 15px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 29px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }
}