:root {
  --bg: #f4f7fd;
  --surface: #ffffff;
  --ink: #1f2a44;
  --sub: #5b6785;
  --line: #e2e8f6;
  --brand: #1677ff;
  --brand-2: #0a4ec2;
  --ok: #16a34a;
  --warn: #ea580c;
  --maxw: 1200px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  color: var(--ink);
  background:
    radial-gradient(1100px 460px at 110% -10%, rgba(22, 119, 255, 0.17) 0%, transparent 58%),
    radial-gradient(800px 380px at -10% -12%, rgba(10, 78, 194, 0.18) 0%, transparent 56%),
    var(--bg);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(8px);
  background: rgba(244, 247, 253, 0.9);
  border-bottom: 1px solid rgba(226, 232, 246, 0.92);
}

.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: 64px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.2px;
}

.logo-img {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  object-fit: cover;
  box-shadow: 0 8px 18px rgba(22, 119, 255, 0.22);
}

.links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--sub);
  font-size: 14px;
}

.links a {
  padding: 5px 2px;
  border-bottom: 2px solid transparent;
  transition: all 0.15s ease;
}

.links a:hover {
  color: var(--brand);
  border-bottom-color: rgba(22, 119, 255, 0.28);
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px 20px 48px;
}

.hero {
  border: 1px solid #d8e3fb;
  border-radius: 20px;
  background: linear-gradient(120deg, #f7faff 0%, #eef4ff 46%, #f7fbff 100%);
  box-shadow: 0 18px 46px rgba(31, 42, 68, 0.08);
  padding: 34px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 22px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 44px;
  line-height: 1.12;
  letter-spacing: 0.4px;
}

.hero p {
  margin: 0 0 14px;
  color: var(--sub);
  font-size: 15px;
}

.hero-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 14px;
  border: 1px solid transparent;
}

.btn.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 10px 24px rgba(22, 119, 255, 0.24);
}

.btn.ghost {
  border-color: #c7d6f4;
  color: var(--brand-2);
  background: rgba(255, 255, 255, 0.78);
}

.hero-stats {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.stat {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid #d8e3fb;
  border-radius: 12px;
  padding: 10px 12px;
}

.stat b {
  display: block;
  font-size: 17px;
  color: var(--brand-2);
}

.hero-visual {
  background: #fff;
  border: 1px solid #d8e3fb;
  border-radius: 16px;
  overflow: hidden;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 290px;
  object-fit: cover;
}

.section {
  margin-top: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(31, 42, 68, 0.05);
  padding: 22px;
}

.section h2 {
  margin: 0 0 10px;
  font-size: 24px;
}

.section p {
  color: var(--sub);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.feature {
  border: 1px solid #e4eaf8;
  background: linear-gradient(180deg, #ffffff, #f9fbff);
  border-radius: 12px;
  padding: 14px;
}

.feature h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.badge {
  display: inline-block;
  font-size: 12px;
  border-radius: 999px;
  padding: 4px 10px;
  font-weight: 700;
}

.badge.ok {
  color: #14532d;
  background: #dcfce7;
}

.badge.wait {
  color: #9a3412;
  background: #ffedd5;
}

.shot {
  border: 1px solid #e4eaf8;
  border-radius: 12px;
  overflow: hidden;
}

.shot img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.shot figcaption {
  font-size: 13px;
  color: var(--sub);
  padding: 8px 10px;
}

.docs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.doc {
  border: 1px dashed #c4d1ee;
  border-radius: 12px;
  padding: 12px 14px;
  transition: all 0.18s ease;
}

.doc:hover {
  border-color: var(--brand);
  transform: translateY(-1px);
}

.doc small {
  color: var(--sub);
}

.footer {
  max-width: var(--maxw);
  margin: 22px auto 36px;
  color: #68748f;
  font-size: 13px;
  padding: 0 20px;
}

.doc-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 26px 20px 40px;
}

.doc-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 10px 30px rgba(31, 42, 68, 0.05);
}

.doc-card h1 {
  margin-top: 0;
}

.doc-card h2 {
  margin-top: 20px;
}

.tag {
  font-size: 12px;
  color: #0f4ea8;
  background: #dbeafe;
  border-radius: 999px;
  padding: 3px 10px;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .hero h1 {
    font-size: 36px;
  }

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

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-2,
  .docs {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .nav {
    min-height: auto;
    padding: 10px 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .links {
    flex-wrap: wrap;
    gap: 10px 14px;
    font-size: 13px;
  }

  .wrap {
    padding: 18px 16px 36px;
  }

  .hero h1 {
    font-size: 30px;
  }
}