:root {
  --color-primary: #003d9b;
  --color-primary-light: #0052cc;
  --color-primary-wash: #eef6ff;
  --color-trust: #0f766e;
  --color-text: #111827;
  --color-body: #475569;
  --color-muted: #64748b;
  --color-surface: #ffffff;
  --color-bg: #f7fbff;
  --color-border: #dbeafe;
  --color-border-soft: #e2e8f0;
  --shadow-soft: 0 18px 48px rgba(0, 61, 155, 0.08);
  --radius: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--color-surface);
  color: var(--color-body);
  font-size: 16px;
  line-height: 1.65;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(0, 82, 204, 0.35);
  outline-offset: 3px;
}

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--color-primary);
  color: var(--color-surface);
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(219, 234, 254, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(1180px, calc(100% - 36px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
}

.nav-toggle {
  display: none;
}

.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-weight: 800;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--color-muted);
  font-size: 14px;
}

.nav-links a,
.nav-cta {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-cta {
  padding: 0 18px;
  border-radius: 8px;
  background: var(--color-primary);
  color: var(--color-surface);
  font-weight: 700;
}

.section,
.section-band,
.trust-row,
.final-cta {
  padding: 88px 0;
}

.section-band,
.hero {
  background: linear-gradient(180deg, var(--color-bg), #ffffff);
}

.hero {
  padding-top: 96px;
}

.hero-grid,
.split-layout,
.protection-grid,
.mini-program,
.faq-layout,
.final-box,
.footer-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--color-trust);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--color-text);
  line-height: 1.15;
}

h1 {
  max-width: 620px;
  font-size: clamp(42px, 6vw, 64px);
}

h2 {
  font-size: clamp(30px, 4vw, 42px);
}

h3 {
  font-size: 20px;
}

p {
  margin: 0;
}

.hero-text {
  max-width: 620px;
  margin-top: 18px;
  color: var(--color-body);
  font-size: 18px;
}

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

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 0 20px;
  font-weight: 800;
}

.button.primary {
  background: var(--color-primary);
  color: var(--color-surface);
}

.button.secondary {
  border: 1px solid #bfdbfe;
  background: var(--color-surface);
  color: var(--color-primary);
}

.hero-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
  color: var(--color-muted);
  font-size: 14px;
}

.hero-checks li {
  padding: 7px 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
}

.diagnosis-panel,
.info-card,
.mentor-card,
.protection-card,
.qr-card,
.legal-shell,
.not-found-shell {
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.diagnosis-panel {
  padding: 22px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
  color: var(--color-muted);
}

.diagnosis-step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--color-border-soft);
  border-radius: 8px;
}

.diagnosis-step + .diagnosis-step {
  margin-top: 10px;
}

.diagnosis-step span {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--color-primary-wash);
  color: var(--color-primary);
  font-weight: 800;
}

.diagnosis-step p {
  margin-top: 4px;
  color: var(--color-muted);
  font-size: 14px;
}

.diagnosis-step.highlighted {
  border-color: #bfdbfe;
  background: var(--color-primary-wash);
}

.trust-row {
  padding-top: 34px;
  padding-bottom: 34px;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.trust-grid article {
  min-height: 132px;
  padding: 18px;
  border: 1px solid var(--color-border-soft);
  border-radius: 8px;
  background: var(--color-surface);
}

.trust-grid strong {
  color: var(--color-text);
}

.trust-grid p {
  margin-top: 8px;
  color: var(--color-muted);
  font-size: 14px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading p:not(.eyebrow) {
  margin-top: 12px;
}

.section-heading.compact {
  margin-bottom: 22px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.info-card,
.mentor-card,
.protection-card,
.qr-card {
  padding: 22px;
}

.card-topline,
.mentor-meta {
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 800;
}

.info-card h3,
.mentor-card h3 {
  margin-top: 10px;
}

.info-card p,
.mentor-card p {
  margin-top: 10px;
  color: var(--color-body);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag-row span {
  padding: 6px 9px;
  border-radius: 999px;
  background: var(--color-primary-wash);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 700;
}

.feature-list,
.protection-card ul {
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}

.feature-list li,
.protection-card li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-soft);
}

.mentor-stack {
  display: grid;
  gap: 14px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.process-list li {
  min-height: 168px;
  padding: 18px;
  border: 1px solid var(--color-border-soft);
  border-radius: 8px;
  background: var(--color-surface);
}

.process-list span {
  color: var(--color-primary);
  font-weight: 800;
}

.process-list strong {
  display: block;
  margin-top: 10px;
  color: var(--color-text);
}

.process-list p {
  margin-top: 8px;
  color: var(--color-muted);
  font-size: 14px;
}

.protection-card {
  background: #f8fcff;
}

.mini-program {
  align-items: stretch;
}

.qr-card {
  display: grid;
  place-items: center;
  text-align: center;
}

.qr-card img {
  width: 132px;
  height: 132px;
  border-radius: 12px;
  object-fit: contain;
}

.qr-card strong {
  margin-top: 18px;
  color: var(--color-text);
}

.faq-layout {
  grid-template-columns: 0.7fr 1.3fr;
  align-items: start;
}

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

.faq-list details {
  border: 1px solid var(--color-border-soft);
  border-radius: 8px;
  background: var(--color-surface);
}

.faq-list summary {
  min-height: 56px;
  display: flex;
  align-items: center;
  padding: 0 18px;
  color: var(--color-text);
  font-weight: 800;
  cursor: pointer;
}

.faq-list details p {
  padding: 0 18px 18px;
  color: var(--color-muted);
}

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

.final-box {
  gap: 28px;
}

.final-box h2,
.final-box .eyebrow {
  color: var(--color-surface);
}

.final-box .button.primary {
  background: var(--color-surface);
  color: var(--color-primary);
}

.site-footer {
  padding: 36px 0;
  border-top: 1px solid var(--color-border-soft);
  background: #f8fafc;
}

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

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.footer-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  font-weight: 700;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 22px;
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  color: var(--color-muted);
  background: var(--color-surface);
}

.legal-page,
.not-found-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 0;
  background: var(--color-bg);
}

.legal-shell,
.not-found-shell {
  width: min(760px, calc(100% - 40px));
  padding: 34px;
}

.legal-shell h1,
.not-found-shell h1 {
  margin: 12px 0 16px;
}

.legal-shell p + p {
  margin-top: 14px;
}

.legal-back {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  font-weight: 800;
}

@media (max-width: 1024px) {
  .process-list {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 768px) {
  .container,
  .nav {
    width: min(100% - 28px, 1120px);
  }

  .nav {
    min-height: 64px;
  }

  .brand span {
    font-size: 14px;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px 9px;
    border: none;
    border-radius: 8px;
    background: none;
    cursor: pointer;
  }

  .nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: var(--color-text);
    transition: transform 0.2s, opacity 0.2s;
  }

  .nav.open .nav-toggle span:nth-child(1) {
    transform: translateY(-6px) rotate(45deg);
  }

  .nav.open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .nav.open .nav-toggle span:nth-child(3) {
    transform: translateY(6px) rotate(-45deg);
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 16px 14px;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
    box-shadow: 0 12px 32px rgba(0, 61, 155, 0.08);
  }

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

  .section,
  .section-band,
  .final-cta {
    padding: 64px 0;
  }

  .hero {
    padding-top: 72px;
  }

  .hero-grid,
  .split-layout,
  .protection-grid,
  .mini-program,
  .faq-layout,
  .final-box,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .trust-grid,
  .card-grid,
  .process-list {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 42px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .nav {
    gap: 12px;
  }

  .brand span {
    display: none;
  }

  .nav-cta {
    padding: 0 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}