:root {
  --bg: #0f1115;
  --card: #171a21;
  --card-soft: #1d2230;
  --text: #f5f7fb;
  --muted: #b9c0d0;
  --primary: #ff3b66;
  --primary-soft: #ff6c8e;
  --line: #2a3143;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  line-height: 1.8;
}

a {
  color: #ff9ab0;
  text-decoration: none;
}

a:hover {
  color: #ffd0db;
}

.container {
  width: min(var(--max), 92vw);
  margin: 0 auto;
}

header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(15, 17, 21, 0.88);
  border-bottom: 1px solid var(--line);
  z-index: 20;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 10px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
}

.hero {
  padding: 42px 0 24px;
}

h1, h2, h3 {
  line-height: 1.35;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4.3vw, 44px);
}

.lead {
  color: var(--muted);
  font-size: 17px;
}

.btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.btn {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 10px;
  border: 1px solid var(--line);
  transition: 0.2s ease;
}

.btn.primary {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
}

.btn.primary:hover {
  background: var(--primary-soft);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.card {
  background: linear-gradient(180deg, var(--card), var(--card-soft));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
}

.cover {
  width: 100%;
  height: 190px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid #334059;
}

.section {
  margin: 30px 0;
}

.section h2 {
  font-size: clamp(22px, 3vw, 30px);
  margin-bottom: 6px;
}

.kws {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.kw {
  background: #232a3a;
  border: 1px solid #36405b;
  color: #dce4f4;
  border-radius: 999px;
  padding: 5px 11px;
  font-size: 13px;
}

.notice {
  margin-top: 16px;
  font-size: 13px;
  color: #95a0b8;
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 38px;
  padding: 20px 0 36px;
  color: #b8c1d6;
}

.small {
  font-size: 14px;
}

.page-title {
  margin-top: 24px;
}

.list li {
  margin-bottom: 8px;
}

.error-wrap {
  min-height: 72vh;
  display: grid;
  place-items: center;
  text-align: center;
}

.error-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  width: min(680px, 92vw);
}

.mobile-breadcrumb-wrap {
  display: none;
}

@media (max-width: 768px) {
  .mobile-breadcrumb-wrap {
    display: block;
    width: 100%;
    margin-top: 4px;
  }

  .mobile-breadcrumb {
    position: relative;
    background: rgba(25, 31, 45, 0.95);
    border: 1px solid #2d3750;
    border-radius: 12px;
    overflow: hidden;
  }

  .mobile-breadcrumb-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin: 0;
    padding: 10px 12px;
    border: none;
    background: transparent;
    color: #d8e0f0;
    font-size: 14px;
    line-height: 1.5;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
  }

  .mobile-breadcrumb-trail {
    flex: 1;
    min-width: 0;
  }

  .mobile-breadcrumb-trail a {
    color: #ffb2c4;
    text-decoration: none;
  }

  .mobile-breadcrumb .sep {
    color: #8f9ab2;
    padding: 0 6px;
  }

  .mobile-breadcrumb .current {
    color: #ffffff;
  }

  .mobile-breadcrumb-chevron {
    color: #8f9ab2;
    font-size: 12px;
    transition: transform 0.2s ease;
    flex-shrink: 0;
  }

  .mobile-breadcrumb.is-open .mobile-breadcrumb-chevron {
    transform: rotate(180deg);
  }

  .mobile-breadcrumb-menu {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 0 10px 10px;
    border-top: 1px solid #2d3750;
  }

  .mobile-breadcrumb-menu[hidden] {
    display: none;
  }

  .mobile-breadcrumb-menu a {
    display: block;
    padding: 9px 10px;
    text-align: center;
    font-size: 13px;
    color: #dce4f4;
    background: #202636;
    border: 1px solid #323e57;
    border-radius: 10px;
    text-decoration: none;
  }

  .mobile-breadcrumb-menu a:hover,
  .mobile-breadcrumb-menu a:active {
    color: #fff;
    background: #2a3348;
  }

  .container {
    width: min(100% - 24px, 720px);
  }

  body {
    font-size: 16px;
    line-height: 1.75;
  }

  header {
    position: sticky;
    top: 0;
    background: rgba(15, 17, 21, 0.94);
  }

  .nav {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 10px 0;
  }

  .brand {
    font-size: 17px;
    justify-content: center;
  }

  .brand img {
    width: 32px;
    height: 32px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding: 18px 0 14px;
  }

  h1 {
    font-size: 24px;
    margin-bottom: 8px;
  }

  .lead {
    font-size: 15px;
    line-height: 1.65;
    margin-bottom: 0;
  }

  .btns {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 14px;
  }

  .btn {
    width: 100%;
    text-align: center;
    padding: 12px 12px;
    font-size: 15px;
    border-radius: 12px;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: 12px;
    margin: 16px 0;
  }

  .card {
    padding: 13px;
    border-radius: 12px;
  }

  .cover {
    height: 170px;
  }

  .section {
    margin: 20px 0;
  }

  .section h2 {
    font-size: 21px;
    margin-bottom: 10px;
  }

  .small {
    font-size: 13px;
    line-height: 1.65;
  }

  .kw {
    font-size: 12px;
    padding: 5px 10px;
  }

  .card h3 {
    font-size: 17px;
    margin: 8px 0;
  }
}

@media (max-width: 380px) {
  h1 {
    font-size: 22px;
  }

  .cover {
    height: 152px;
  }

}