:root {
  color-scheme: light;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --ink: #172033;
  --muted: #667085;
  --line: #d9e1ec;
  --blue: #2563eb;
  --green: #0f9f6e;
  --orange: #f59e0b;
  --red: #ef4444;
  --shadow: 0 18px 50px rgba(20, 35, 70, 0.10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 750;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
}
nav { display: flex; gap: 24px; font-size: 14px; color: var(--muted); }
nav a { text-decoration: none; }
nav a:hover { color: var(--blue); }

main { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 32px;
  align-items: end;
  padding: 72px 0 36px;
}
.hero-copy h1 {
  margin: 0;
  font-size: clamp(38px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}
.hero-copy h1 span { display: block; }
.hero-copy p {
  max-width: 720px;
  margin: 24px 0 0;
  font-size: 18px;
  line-height: 1.72;
  color: var(--muted);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  text-decoration: none;
  font-size: 14px;
  font-weight: 650;
}
.button.primary {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}
.evidence-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.evidence-panel div {
  min-height: 112px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.evidence-panel strong { display: block; font-size: 36px; line-height: 1; }
.evidence-panel span { display: block; margin-top: 10px; color: var(--muted); font-size: 14px; }

.doc-preview {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  gap: 28px;
  align-items: stretch;
  margin: 24px 0 76px;
}
.preview-main, .preview-copy {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.preview-main img { display: block; width: 100%; height: 100%; object-fit: cover; }
.preview-copy { padding: 34px; }
.preview-copy h2, .section-heading h2, .downloads h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.18;
}
.preview-copy p, .section-heading p, .downloads p {
  color: var(--muted);
  line-height: 1.72;
}
.preview-copy ul {
  margin: 22px 0 0;
  padding-left: 18px;
  color: #344054;
  line-height: 1.8;
}

.section { padding: 34px 0 78px; }
.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: end;
  margin-bottom: 24px;
}
.section-heading p { max-width: 520px; margin: 0; }
.slide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.slide-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(20, 35, 70, 0.07);
}
.slide-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}
.slide-card div { padding: 18px 20px 20px; }
.slide-card h3 { margin: 0; font-size: 17px; line-height: 1.35; }
.slide-card p { margin: 8px 0 0; color: var(--muted); font-size: 13px; line-height: 1.55; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
table { width: 100%; border-collapse: collapse; min-width: 980px; }
th, td { padding: 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 14px; }
th { color: #475467; font-size: 12px; text-transform: uppercase; background: #f1f5fb; }
td span { display: block; margin-top: 6px; color: var(--muted); font-size: 12px; line-height: 1.55; }
td a { color: var(--blue); font-weight: 650; text-decoration: none; }
td a:hover { text-decoration: underline; }
mark {
  display: inline-flex;
  padding: 5px 8px;
  border-radius: 6px;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  background: var(--orange);
}
.status-high { background: var(--green); }
.status-low { background: var(--red); }
.status-candidate { background: var(--orange); }

.downloads {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: center;
  margin: 20px 0 72px;
  padding: 34px;
  border-radius: 8px;
  background: #182237;
  color: #fff;
}
.downloads p { color: rgba(255,255,255,0.72); margin-bottom: 0; }
.download-list { display: grid; grid-template-columns: repeat(2, minmax(150px, 1fr)); gap: 10px; min-width: 360px; }
.download-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 8px;
  color: #fff;
  text-decoration: none;
  background: rgba(255,255,255,0.08);
  font-size: 14px;
  font-weight: 650;
}
footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 40px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 13px;
}

@media (max-width: 900px) {
  .site-header { padding: 0 20px; }
  nav { display: none; }
  main { width: min(100% - 28px, 1180px); }
  .hero, .doc-preview { grid-template-columns: 1fr; }
  .slide-grid { grid-template-columns: 1fr; }
  .section-heading, .downloads, footer { flex-direction: column; align-items: flex-start; }
  .download-list { width: 100%; min-width: 0; grid-template-columns: 1fr; }
}