:root {
  --color-primary: #0f172a;
  --color-secondary: #334155;
  --color-accent: #0369a1;
  --color-accent-strong: #075985;
  --color-warm: #f59e0b;
  --color-calm: #0f766e;
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-muted: #e8ecf1;
  --color-border: #dbe3ee;
  --color-foreground: #020617;
  --color-subtle: #64748b;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--color-foreground);
  background: var(--color-background);
  line-height: 1.65;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(219, 227, 238, 0.9);
  background: rgba(248, 250, 252, 0.94);
  backdrop-filter: blur(14px);
}

.nav {
  max-width: 1160px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-weight: 800;
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--color-secondary);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

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

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 11px 18px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.button:focus-visible,
.nav-links a:focus-visible,
.brand:focus-visible {
  outline: 3px solid rgba(3, 105, 161, 0.35);
  outline-offset: 3px;
}

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

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

.button-primary:hover {
  background: var(--color-accent-strong);
}

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

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

.hero {
  max-width: 1160px;
  margin: 0 auto;
  padding: 74px 20px 56px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: 44px;
}

.hero-complete {
  min-height: 680px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--color-secondary);
  font-size: 13px;
  font-weight: 700;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-calm);
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--color-primary);
  line-height: 1.18;
}

h1 {
  margin-top: 18px;
  max-width: 760px;
  font-size: clamp(36px, 6vw, 64px);
  letter-spacing: 0;
}

.hero-copy {
  max-width: 660px;
  margin: 20px 0 0;
  color: var(--color-secondary);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.proof-line {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--color-secondary);
  font-size: 14px;
  font-weight: 700;
}

.proof-line span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #ffffff;
}

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 30px;
  max-width: 620px;
}

.metric {
  border-top: 3px solid var(--color-accent);
  background: #ffffff;
  padding: 14px 16px;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.metric strong {
  display: block;
  font-size: 24px;
  line-height: 1.2;
}

.metric span {
  color: var(--color-subtle);
  font-size: 13px;
}

.hero-visual {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.report-card {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.report-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 22px;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, #f8fafc, #ffffff);
}

.report-header h2 {
  margin-top: 4px;
  font-size: 24px;
}

.status-pill {
  align-self: flex-start;
  border-radius: 999px;
  background: #e0f2fe;
  color: #075985;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 800;
}

.report-note {
  margin: 0 18px 18px;
  padding: 16px;
  border-left: 4px solid var(--color-accent);
  background: #f8fafc;
}

.report-note strong {
  color: var(--color-primary);
}

.report-note p {
  margin: 6px 0 0;
  color: var(--color-secondary);
}

.visual-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-border);
  background: #f8fafc;
}

.visual-title {
  font-weight: 800;
}

.visual-label {
  color: var(--color-subtle);
  font-size: 13px;
}

.theme-list {
  padding: 18px;
  display: grid;
  gap: 13px;
}

.theme-row {
  display: grid;
  grid-template-columns: 88px 1fr 48px;
  align-items: center;
  gap: 12px;
}

.theme-row span {
  font-weight: 700;
  color: var(--color-primary);
}

.bar {
  height: 12px;
  border-radius: 999px;
  background: var(--color-muted);
  overflow: hidden;
}

.bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-accent), var(--color-calm));
}

.score {
  color: var(--color-subtle);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.page-section {
  padding: 62px 20px;
}

.section-inner {
  max-width: 1160px;
  margin: 0 auto;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--color-accent);
  font-weight: 800;
}

.section-title {
  max-width: 760px;
  font-size: clamp(28px, 4vw, 44px);
}

.section-copy {
  max-width: 780px;
  margin: 16px 0 0;
  color: var(--color-secondary);
  font-size: 17px;
}

.band {
  background: #ffffff;
  border-block: 1px solid var(--color-border);
}

.grid-3 {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.grid-2 {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.comparison-grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.compare-panel {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 24px;
  background: #ffffff;
}

.compare-panel h3 {
  margin-bottom: 12px;
}

.compare-panel ul {
  margin: 0;
  padding-left: 20px;
  color: var(--color-secondary);
}

.compare-panel li + li {
  margin-top: 8px;
}

.compare-bad {
  border-top: 4px solid #94a3b8;
}

.compare-good {
  border-top: 4px solid var(--color-calm);
}

.panel {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
  padding: 22px;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.band .panel {
  background: #f8fafc;
}

.panel h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.panel p,
.panel li {
  color: var(--color-secondary);
}

.panel ul {
  margin: 12px 0 0;
  padding-left: 20px;
}

.feature-panel {
  min-height: 238px;
}

.icon-box {
  width: 44px;
  height: 44px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 8px;
  background: #e0f2fe;
  color: var(--color-accent);
}

.icon-box svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: 42px;
  align-items: center;
}

.insight-stack {
  display: grid;
  gap: 12px;
}

.insight-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
  padding: 18px;
}

.insight-item strong {
  color: var(--color-primary);
}

.insight-item span {
  color: var(--color-secondary);
}

.quote-panel {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
  padding: 26px;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.quote-panel p {
  margin: 0;
  color: var(--color-secondary);
  font-size: 17px;
}

.quote-panel strong {
  display: block;
  margin-top: 18px;
  color: var(--color-primary);
}

.step-list {
  margin-top: 32px;
  display: grid;
  gap: 14px;
  counter-reset: steps;
}

.step {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 16px;
  align-items: start;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
  padding: 20px;
}

.step::before {
  counter-increment: steps;
  content: counter(steps);
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 800;
}

.step h3 {
  font-size: 19px;
  margin-bottom: 6px;
}

.faq {
  margin-top: 30px;
  display: grid;
  gap: 12px;
}

details {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
  padding: 18px 20px;
}

summary {
  min-height: 32px;
  font-weight: 800;
  cursor: pointer;
  color: var(--color-primary);
}

details p {
  color: var(--color-secondary);
}

.cta-band {
  background: var(--color-primary);
  color: #ffffff;
}

.cta-band h2,
.cta-band .section-kicker {
  color: #ffffff;
}

.cta-band .section-copy {
  color: #dbeafe;
}

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

.final-cta .button-primary:hover {
  background: #e0f2fe;
}

.cta-secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.4);
  color: #ffffff;
}

.cta-secondary:hover {
  border-color: #ffffff;
  color: #ffffff;
}

.mobile-sticky-cta {
  display: none;
}

.footer {
  padding: 34px 20px;
  color: var(--color-subtle);
  font-size: 13px;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

@media (max-width: 860px) {
  .nav {
    align-items: center;
    gap: 12px;
    padding-block: 10px;
  }

  .nav-links {
    flex: 1;
    min-width: 0;
    overflow-x: auto;
    gap: 14px;
    padding-bottom: 0;
    white-space: nowrap;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 40px;
    padding-bottom: 44px;
    gap: 32px;
  }

  .hero-complete {
    min-height: auto;
  }

  .trust-row,
  .grid-3,
  .grid-2,
  .comparison-grid,
  .split-section {
    grid-template-columns: 1fr;
  }

  .theme-row {
    grid-template-columns: 76px 1fr 42px;
    gap: 10px;
  }

  .insight-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (max-width: 640px) {
  body {
    padding-bottom: 70px;
  }

  .nav {
    padding: 8px 14px;
    gap: 10px;
  }

  .brand {
    display: inline-block;
    max-width: 8.5em;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 15px;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 12px;
    font-size: 13px;
  }

  .nav-links a {
    min-height: 36px;
    display: inline-flex;
    align-items: center;
  }

  .nav-links .button {
    display: none;
  }

  .page-section {
    padding: 48px 18px;
  }

  .hero {
    padding: 28px 18px 38px;
    gap: 24px;
  }

  .eyebrow {
    padding: 5px 9px;
    font-size: 12px;
  }

  h1 {
    margin-top: 12px;
    font-size: 32px;
    line-height: 1.2;
  }

  .hero-copy {
    margin-top: 14px;
    font-size: 16px;
    line-height: 1.62;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 20px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .proof-line {
    margin-top: 14px;
    gap: 8px;
    font-size: 13px;
  }

  .proof-line span {
    min-height: 30px;
    padding: 4px 9px;
  }

  .trust-row {
    gap: 10px;
    margin-top: 18px;
  }

  .metric {
    padding: 12px 14px;
  }

  .metric strong {
    font-size: 22px;
  }

  .report-card {
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
  }

  .report-header {
    flex-direction: column;
    gap: 10px;
    padding: 16px;
  }

  .report-header h2 {
    font-size: 20px;
  }

  .theme-list {
    padding: 16px;
    gap: 11px;
  }

  .report-note {
    margin: 0 16px 16px;
    padding: 14px;
  }

  .mobile-sticky-cta {
    position: fixed;
    left: 14px;
    right: 14px;
    bottom: 14px;
    z-index: 30;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--color-accent);
    color: #ffffff;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 14px 34px rgba(3, 105, 161, 0.3);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}