:root {
  --blue: #1b4f8a;
  --blue-deep: #123a68;
  --sky: #2e7ec9;
  --ink: #1c2430;
  --muted: #5b6573;
  --paper: #f4f7fb;
  --card: #ffffff;
  --line: rgba(27, 79, 138, 0.12);
  --header: #123a68;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

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

.container {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--header);
  color: #fff;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--sky);
  display: grid;
  place-items: center;
  font-weight: 700;
}

.brand strong {
  display: block;
  font-size: 16px;
}

.brand small {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.65);
}

.nav-links {
  display: flex;
  gap: 18px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.78);
}

.nav-links a:hover,
.nav-links a.is-current {
  color: #fff;
}

.hero,
.page-hero {
  padding: 48px 0 36px;
  background:
    linear-gradient(135deg, rgba(46, 126, 201, 0.14), rgba(18, 58, 104, 0.05)),
    var(--paper);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  text-align: center;
}

.eyebrow,
.kicker,
.crumb {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--sky);
}

.crumb,
.crumb a {
  letter-spacing: 0;
  color: var(--muted);
}

.hero h1,
.page-hero h1 {
  margin: 8px 0 14px;
  font-size: clamp(22px, 4.4vw, 36px);
  line-height: 1.3;
}

.hero h1 span {
  display: block;
  margin-top: 8px;
  font-size: 0.52em;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.lead,
.lead-inline {
  max-width: 760px;
  margin: 0 auto 20px;
  color: var(--muted);
}

.page-hero .lead {
  margin: 0;
}

.search-box {
  margin: 28px auto 0;
  max-width: 560px;
  display: flex;
  border: 2px solid var(--sky);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.search-box input {
  flex: 1;
  border: 0;
  padding: 12px 16px;
  font: inherit;
  outline: none;
}

.search-box button,
.dl-btn {
  border: 0;
  background: var(--sky);
  color: #fff;
  padding: 12px 22px;
  font: inherit;
  cursor: pointer;
}

.search-box button:hover,
.dl-btn:hover {
  background: var(--blue);
}

.hero-meta,
.cat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  justify-content: center;
  margin-top: 22px;
  font-size: 13px;
  color: var(--muted);
}

.cats {
  padding: 18px 0;
}

.cat-row a {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
}

.block {
  padding: 48px 0;
}

.block.alt {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin-bottom: 16px;
}

.section-head h2,
.article h2 {
  margin: 0 0 14px;
  font-size: clamp(20px, 3vw, 28px);
}

.section-head .more,
.more-link,
.article a {
  color: var(--sky);
  font-size: 14px;
}

.section-head .more {
  margin-left: auto;
}

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

.article-card,
.subject-card,
.tutor-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
}

.article-card time,
.meta-line,
.area,
.school {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.article-card h3,
.tutor-card h3,
.subject-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.article-card p,
.subject-card p,
.tutor-card p {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 24px;
}

.news-mini,
.news-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.news-mini li,
.news-list li {
  border-bottom: 1px dashed var(--line);
  padding: 12px 0;
}

.news-mini span,
.news-mini time,
.news-list time {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

.news-list h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.quote-panel {
  background: var(--header);
  color: #eef4fb;
  border-radius: 12px;
  padding: 24px;
}

.quote-panel blockquote {
  margin: 0 0 12px;
  font-size: 16px;
}

.ghost-btn,
.dl-btn {
  display: inline-block;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 14px;
}

.ghost-btn {
  margin-top: 12px;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.article {
  max-width: 760px;
}

.article p,
.article li {
  color: #3d4654;
}

.contact-points {
  padding-left: 1.2em;
}

.contact-points li {
  margin-bottom: 10px;
}

.site-footer {
  padding: 36px 0 48px;
  background: var(--header);
  color: #d7e3f0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.icp p {
  margin: 0 0 6px;
}

@media (max-width: 860px) {
  .nav {
    flex-wrap: wrap;
    padding: 8px 0 12px;
  }

  .nav-links {
    width: 100%;
    gap: 12px;
    font-size: 13px;
    overflow-x: auto;
  }

  .article-grid,
  .subject-grid,
  .tutor-grid,
  .split,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .search-box {
    flex-direction: column;
  }
}