* {
  box-sizing: border-box;
}

:root {
  --primary: #1f6fff;
  --primary-dark: #0b4fc4;
  --secondary: #ff8a00;
  --text: #172033;
  --muted: #657083;
  --line: #e8edf5;
  --bg: #f6f8fc;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(31, 111, 255, 0.12);
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
}

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

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  background: #0b1f44;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

.topbar-inner {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 6px 20px rgba(16, 32, 64, 0.06);
}

.navbar {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 10px 15px;
  border-radius: 999px;
  color: #263248;
  font-weight: 600;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: #edf4ff;
}

.menu-toggle,
.menu-btn {
  display: none;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(255, 138, 0, 0.22), transparent 28%),
    linear-gradient(135deg, #eef6ff 0%, #f9fbff 50%, #eef2ff 100%);
}

.hero::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(31, 111, 255, 0.12);
}

.hero-grid,
.split,
.mock-panel,
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-copy h1,
.page-hero h1 {
  margin: 10px 0 18px;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.hero-copy p,
.page-hero p,
.split p,
.cta-box p,
.contact-info p {
  color: var(--muted);
  font-size: 18px;
}

.eyebrow {
  margin: 0;
  color: var(--primary);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 13px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border: 0;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), #3c92ff);
  color: var(--white);
  box-shadow: 0 12px 24px rgba(31, 111, 255, 0.24);
}

.btn.ghost {
  color: var(--primary);
  background: var(--white);
  border: 1px solid #d8e7ff;
}

.hero-card,
.score-card,
.cta-box,
.contact-info,
.contact-form,
.filter-panel,
.wide-card,
.article-card,
.service-card,
.advantage-grid article,
.course-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.hero-card {
  position: relative;
  z-index: 1;
  padding: 34px;
}

.hero-card h2 {
  margin-top: 0;
  font-size: 28px;
}

.hero-card li,
.check-list li,
.step-list li {
  margin: 10px 0;
}

.section {
  padding: 78px 0;
}

.section.alt,
.stats-section {
  background: var(--bg);
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2,
.split h2,
.cta-box h2 {
  margin: 8px 0 0;
  font-size: clamp(28px, 3.6vw, 42px);
  letter-spacing: -0.03em;
}

.between {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.card-grid {
  display: grid;
  gap: 24px;
}

.card-grid.three,
.article-grid,
.advantage-grid,
.stats-grid {
  grid-template-columns: repeat(3, 1fr);
}

.course-card,
.service-card,
.article-card,
.advantage-grid article {
  padding: 28px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.course-card:hover,
.service-card:hover,
.article-card:hover,
.advantage-grid article:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 55px rgba(16, 32, 64, 0.12);
}

.course-card span,
.tag,
.service-card b,
.advantage-grid span {
  display: inline-flex;
  color: var(--primary);
  font-weight: 800;
  margin-bottom: 12px;
}

.course-card h3,
.service-card h2,
.article-card h2,
.advantage-grid h2,
.wide-card h2 {
  margin: 0 0 12px;
  font-size: 22px;
}

.course-card p,
.service-card p,
.article-card p,
.advantage-grid p,
.wide-card p {
  color: var(--muted);
  margin-bottom: 18px;
}

.course-card a,
.text-link,
.article-card a {
  color: var(--primary);
  font-weight: 800;
}

.stats-grid {
  display: grid;
  gap: 20px;
}

.stats-grid div {
  padding: 24px;
  border-radius: 22px;
  background: var(--white);
  text-align: center;
}

.stats-grid strong {
  display: block;
  color: var(--primary);
  font-size: 34px;
  line-height: 1.2;
}

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

.feature-list {
  display: grid;
  gap: 16px;
}

.feature-list div {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 20px;
  border-radius: 18px;
  background: var(--white);
  border: 1px solid var(--line);
}

.feature-list b {
  color: var(--secondary);
  font-size: 24px;
}

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

.news-list a {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 18px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
}

.news-list time,
.article-card time {
  color: var(--primary);
  font-weight: 700;
}

.page-hero {
  padding: 76px 0;
  color: var(--white);
  background: linear-gradient(135deg, #0b4fc4, #1f6fff 55%, #57a8ff);
}

.page-hero p,
.page-hero .eyebrow {
  color: rgba(255, 255, 255, 0.88);
}

.course-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: start;
}

.filter-panel {
  position: sticky;
  top: 120px;
  padding: 24px;
}

.filter-panel h2 {
  margin-top: 0;
}

.filter-panel a {
  display: block;
  padding: 12px 0;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.course-list {
  display: grid;
  gap: 22px;
}

.wide-card {
  padding: 30px;
}

.check-list {
  padding-left: 20px;
  color: var(--muted);
}

.article-grid,
.advantage-grid {
  display: grid;
  gap: 24px;
}

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

.exam-hero {
  background: linear-gradient(135deg, #12356f, #1f6fff 55%, #ff8a00);
}

.step-list {
  padding-left: 20px;
  color: var(--muted);
  font-size: 18px;
}

.score-card {
  padding: 40px;
  text-align: center;
}

.score-card strong {
  display: block;
  color: var(--secondary);
  font-size: 86px;
  line-height: 1;
}

.cta-box {
  padding: 42px;
  text-align: center;
}

.contact-grid {
  align-items: stretch;
}

.contact-info,
.contact-form {
  padding: 32px;
}

.info-item {
  display: grid;
  gap: 6px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.info-item span,
.info-item a {
  color: var(--muted);
}

.info-item a {
  color: var(--primary);
  font-weight: 700;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 14px;
  font: inherit;
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(31, 111, 255, 0.1);
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  background: #0b1f44;
  color: rgba(255, 255, 255, 0.82);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  padding: 42px 0;
}

.footer-grid h3 {
  color: var(--white);
  margin-top: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 10px 26px;
}

.footer-links a:hover,
.copyright a:hover {
  color: var(--white);
}

.copyright {
  padding: 16px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

@media (max-width: 900px) {
  .topbar-inner,
  .between,
  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }

  .menu-btn {
    display: inline-flex;
    padding: 8px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--primary);
    font-weight: 700;
  }

  .nav-links {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 114px;
    padding: 14px;
    border-radius: 18px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .menu-toggle:checked ~ .nav-links {
    display: grid;
  }

  .hero-grid,
  .split,
  .mock-panel,
  .contact-grid,
  .course-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .filter-panel {
    position: static;
  }

  .card-grid.three,
  .article-grid,
  .advantage-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .article-card.featured {
    grid-column: auto;
  }

  .news-list a {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .section {
    padding: 54px 0;
  }

  .hero,
  .page-hero {
    padding: 58px 0;
  }

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