:root {
  --blue-950: #071936;
  --blue-900: #0b2450;
  --blue-700: #1557b7;
  --blue-600: #1b6ce1;
  --blue-100: #eaf3ff;
  --blue-50: #f5f9ff;
  --cyan: #28b8d5;
  --gold: #f0b84f;
  --text: #172033;
  --muted: #5f6f89;
  --line: #d9e5f5;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(9, 36, 84, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: "Inter", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(217, 229, 245, 0.8);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(1160px, calc(100% - 40px));
  min-height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue-700), var(--cyan));
  border-radius: 8px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  color: var(--blue-950);
  font-size: 1rem;
  line-height: 1.2;
}

.brand small {
  color: var(--muted);
  font-size: 0.82rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--blue-900);
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-links a {
  transition: color 180ms ease;
}

.nav-links a:hover {
  color: var(--blue-600);
}

.nav-cta {
  padding: 10px 16px;
  color: var(--white) !important;
  background: var(--blue-700);
  border-radius: 8px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--blue-900);
  transition: transform 180ms ease, opacity 180ms ease;
}

.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);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - 76px);
  padding: 88px max(20px, calc((100vw - 1160px) / 2)) 64px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 56px;
  align-items: center;
  background:
    linear-gradient(115deg, rgba(7, 25, 54, 0.92) 0%, rgba(11, 36, 80, 0.78) 48%, rgba(21, 87, 183, 0.7) 100%),
    url("https://images.unsplash.com/photo-1523240795612-9a054b0db644?auto=format&fit=crop&w=1800&q=80") center/cover;
  color: var(--white);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.12));
  pointer-events: none;
}

.hero-content,
.hero-panel {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.55rem, 5.6vw, 5.2rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-subtitle {
  max-width: 720px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.95);
  font-family: "Noto Sans SC", "Inter", sans-serif;
  font-size: clamp(1.16rem, 2.2vw, 1.55rem);
  font-weight: 700;
  line-height: 1.5;
}

.hero-text {
  max-width: 640px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.02rem, 2vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 0;
  border-radius: 8px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

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

.button:disabled {
  cursor: wait;
  opacity: 0.72;
  transform: none;
}

.button.primary {
  color: var(--white);
  background: var(--blue-600);
  box-shadow: 0 16px 38px rgba(27, 108, 225, 0.28);
}

.button.secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.36);
}

.hero-panel {
  display: grid;
  gap: 16px;
}

.metric-card,
.pathway-card,
.hero-grid > div {
  background: rgba(255, 255, 255, 0.94);
  color: var(--blue-950);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.metric-card.main {
  padding: 28px;
}

.metric {
  display: block;
  color: var(--blue-700);
  font-size: clamp(3.2rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1;
}

.pathway-card {
  padding: 22px;
}

.pathway-card span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.hero-grid > div {
  padding: 22px;
}

.hero-grid strong {
  display: block;
  color: var(--blue-700);
  font-size: 2rem;
  line-height: 1;
}

.hero-grid span {
  color: var(--muted);
  font-size: 0.92rem;
}

.section {
  padding: 92px max(20px, calc((100vw - 1160px) / 2));
}

.section-heading {
  max-width: 680px;
}

.section-heading.centered {
  margin: 0 auto 42px;
  text-align: center;
}

.section h2 {
  margin: 0;
  color: var(--blue-950);
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.1;
  letter-spacing: 0;
}

.about {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.about-copy {
  color: var(--muted);
  font-size: 1.08rem;
}

.about-copy p:first-child {
  margin-top: 0;
}

.services,
.success {
  background: var(--blue-50);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  min-height: 260px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 38px rgba(9, 36, 84, 0.07);
}

.card-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 24px;
  color: var(--blue-700);
  background: var(--blue-100);
  border-radius: 8px;
  font-weight: 800;
}

.card h3 {
  margin: 0 0 12px;
  color: var(--blue-950);
  font-size: 1.18rem;
  line-height: 1.25;
}

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

.why {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1.18fr);
  gap: 56px;
  align-items: center;
}

.why-content p:last-child {
  color: var(--muted);
  font-size: 1.08rem;
}

.why-list {
  display: grid;
  gap: 14px;
}

.why-item {
  padding: 22px 24px;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  align-items: start;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue-600);
  border-radius: 8px;
}

.why-item strong {
  color: var(--blue-950);
}

.why-item span {
  color: var(--muted);
}

.success-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 24px;
  align-items: stretch;
}

.story {
  margin: 0;
  padding: 38px;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
  border-radius: 8px;
}

.story p {
  margin: 0 0 24px;
  font-size: clamp(1.25rem, 3vw, 1.8rem);
  line-height: 1.35;
}

.stats {
  display: grid;
  gap: 14px;
}

.stats div {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.stats strong {
  display: block;
  color: var(--blue-700);
  font-size: 2rem;
  line-height: 1;
}

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

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.08fr);
  gap: 56px;
  align-items: start;
}

.contact-info p {
  color: var(--muted);
  font-size: 1.08rem;
}

.wechat-note {
  margin-top: 20px;
  padding: 16px 18px;
  color: var(--blue-900) !important;
  background: var(--blue-50);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: 8px;
  font-family: "Noto Sans SC", "Inter", sans-serif;
  font-weight: 700;
}

.contact-details {
  display: grid;
  gap: 10px;
  margin-top: 26px;
  color: var(--blue-700);
  font-weight: 800;
}

.contact-form {
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--blue-900);
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  padding: 13px 14px;
  color: var(--text);
  background: var(--blue-50);
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(27, 108, 225, 0.16);
  border-color: var(--blue-600);
  background: var(--white);
}

.contact-form .button {
  width: 100%;
}

.form-note {
  min-height: 24px;
  margin: 14px 0 0;
  color: var(--blue-700);
  font-weight: 700;
  text-align: center;
}

.form-note.error {
  color: #b42318;
}

.footer {
  padding: 26px max(20px, calc((100vw - 1160px) / 2));
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: rgba(255, 255, 255, 0.8);
  background: var(--blue-950);
}

.footer p {
  margin: 0;
}

.footer a {
  color: var(--white);
  font-weight: 800;
}

@media (max-width: 980px) {
  .hero,
  .about,
  .why,
  .success-layout,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 68px;
    gap: 36px;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .nav {
    width: min(100% - 32px, 1160px);
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 76px;
    left: 16px;
    right: 16px;
    display: none;
    padding: 18px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .nav-open .nav-links {
    display: grid;
    gap: 14px;
  }

  .nav-cta {
    text-align: center;
  }

  .section {
    padding-top: 68px;
    padding-bottom: 68px;
  }

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

  .why-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .brand strong {
    font-size: 0.9rem;
  }

  .brand small {
    font-size: 0.76rem;
  }

  .hero {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 12vw, 3.15rem);
    line-height: 1.06;
  }

  .hero-subtitle {
    margin-top: 16px;
    font-size: 1.08rem;
  }

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

  .metric-card.main,
  .pathway-card,
  .card,
  .story,
  .contact-form {
    padding: 22px;
  }

  .contact {
    gap: 34px;
  }
}