:root {
  --bg: #0b1220;
  --panel: rgba(16, 24, 40, 0.82);
  --panel-solid: #101b2d;
  --line: rgba(148, 163, 184, 0.18);
  --text: #e5eefc;
  --muted: #9eb0cf;
  --primary: #2dd4bf;
  --primary-dark: #14b8a6;
  --secondary: #60a5fa;
  --shadow: 0 16px 36px rgba(0, 0, 0, 0.28);
  --radius: 18px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(96, 165, 250, 0.18), transparent 24%),
    radial-gradient(circle at left center, rgba(45, 212, 191, 0.10), transparent 20%),
    linear-gradient(180deg, #07101d 0%, #0b1220 50%, #09111e 100%);
  min-height: 100vh;
  line-height: 1.7;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: none;
  cursor: pointer;
}

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(6, 12, 24, 0.78);
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #08111d;
  font-weight: 800;
}

.nav {
  display: flex;
  gap: 18px;
}

.nav a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  transition: 0.25s ease;
}

.nav a:hover,
.nav a.active {
  color: #08111d;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.hero {
  padding: 54px 0 20px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 26px;
  align-items: stretch;
}

.hero-content,
.panel-card,
.card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.88), rgba(9, 16, 29, 0.90));
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}

.hero-content {
  padding: 36px;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 8px 14px;
  border-radius: 999px;
  color: #08111d;
  background: linear-gradient(135deg, var(--primary), #99f6e4);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: 42px;
  line-height: 1.25;
  margin-bottom: 18px;
}

.hero p {
  color: var(--muted);
  max-width: 740px;
  font-size: 16px;
}

.hero-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 122px;
  padding: 12px 20px;
  border-radius: 12px;
  transition: 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #07101d;
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.btn-ghost {
  border: 1px solid rgba(96, 165, 250, 0.3);
  color: var(--text);
  background: rgba(96, 165, 250, 0.06);
}

.btn-ghost:hover {
  background: rgba(96, 165, 250, 0.12);
}

.hero-panel .panel-card {
  padding: 30px;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.hero-panel .panel-card::after {
  content: "";
  position: absolute;
  inset: auto -20% -20% auto;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(45, 212, 191, 0.18), transparent 65%);
  pointer-events: none;
}

.panel-card h3 {
  font-size: 22px;
  margin-bottom: 16px;
}

.panel-card ul {
  padding-left: 18px;
  color: var(--muted);
}

.panel-card li + li {
  margin-top: 10px;
}

.page-main {
  padding: 12px 0 42px;
}

.content-grid,
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 22px;
  align-items: start;
}

.main-column,
.side-column {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.card {
  padding: 24px;
}

.toolbar,
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.toolbar h2,
.section-title-row h2 {
  font-size: 24px;
  margin-bottom: 4px;
}

.toolbar p,
.section-title-row span,
.detail-meta,
.card-desc,
.form-tips p,
.side-list li,
.latest-post-meta,
.comment-meta {
  color: var(--muted);
}

.toolbar-right {
  min-width: 280px;
}

.search-input,
.form-item input,
.form-item select,
.form-item textarea {
  width: 100%;
  padding: 13px 14px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(10, 17, 31, 0.82);
  color: var(--text);
  outline: none;
  transition: 0.25s ease;
}

.search-input::placeholder,
.form-item input::placeholder,
.form-item textarea::placeholder {
  color: #7e91b2;
}

.search-input:focus,
.form-item input:focus,
.form-item select:focus,
.form-item textarea:focus {
  border-color: rgba(45, 212, 191, 0.45);
  box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.10);
}

.filter-bar {
  flex-wrap: wrap;
  justify-content: flex-start;
}

.chip {
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid rgba(96, 165, 250, 0.22);
  color: var(--muted);
  background: rgba(96, 165, 250, 0.06);
  transition: 0.25s ease;
}

.chip:hover,
.chip.active {
  color: #08111d;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.post-card {
  position: relative;
  overflow: hidden;
}

.post-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  opacity: 0.9;
}

.post-card-inner {
  padding-left: 6px;
}

.post-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}

.post-title {
  font-size: 22px;
  line-height: 1.4;
  margin-bottom: 6px;
}

.post-title a:hover {
  color: var(--primary);
}

.post-excerpt {
  color: var(--muted);
  margin: 12px 0 16px;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 16px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  padding: 6px 11px;
  border-radius: 999px;
  font-size: 13px;
  background: rgba(45, 212, 191, 0.10);
  border: 1px solid rgba(45, 212, 191, 0.18);
  color: #9ef0e3;
}

.stats-card h3,
.side-card h3,
.comment-card h2,
.detail-card h1 {
  margin-bottom: 16px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.stat-item {
  padding: 18px 12px;
  border-radius: 14px;
  text-align: center;
  background: rgba(96, 165, 250, 0.06);
  border: 1px solid rgba(96, 165, 250, 0.10);
}

.stat-item strong {
  display: block;
  font-size: 24px;
  color: #ffffff;
}

.stat-item span {
  color: var(--muted);
  font-size: 13px;
}

.side-list {
  padding-left: 16px;
}

.side-list li + li {
  margin-top: 10px;
}

.side-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.side-btn {
  width: 100%;
}

.footer {
  border-top: 1px solid var(--line);
  background: rgba(5, 11, 20, 0.72);
  padding: 22px 0;
  text-align: center;
  color: var(--muted);
  margin-top: 40px;
}

.form-page,
.detail-page {
  padding-top: 36px;
  padding-bottom: 12px;
}

.page-head {
  margin-bottom: 20px;
}

.page-head h1 {
  font-size: 34px;
  margin-bottom: 8px;
}

.page-head p {
  color: var(--muted);
}

.form-card {
  padding: 28px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.form-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-item textarea {
  resize: vertical;
  min-height: 180px;
}

.form-tips {
  margin-top: 16px;
}

.form-actions {
  margin-top: 24px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.detail-card {
  padding: 28px;
}

.detail-category {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(45, 212, 191, 0.10);
  border: 1px solid rgba(45, 212, 191, 0.18);
  color: #9ef0e3;
  font-size: 13px;
}

.detail-card h1 {
  font-size: 34px;
  line-height: 1.35;
  margin-bottom: 10px;
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
  font-size: 14px;
}

.detail-content {
  color: #dbe7ff;
  font-size: 16px;
  white-space: pre-wrap;
  line-height: 1.9;
  margin-bottom: 22px;
}

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

.section-title-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.comment-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.comment-item {
  padding: 18px;
  border-radius: 14px;
  background: rgba(96, 165, 250, 0.05);
  border: 1px solid rgba(96, 165, 250, 0.12);
}

.comment-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.comment-author {
  font-weight: 700;
}

.comment-content {
  color: #dbe7ff;
}

.latest-posts {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.latest-post-item {
  padding: 14px;
  border-radius: 14px;
  background: rgba(96, 165, 250, 0.05);
  border: 1px solid rgba(96, 165, 250, 0.12);
}

.latest-post-item a {
  display: block;
  font-weight: 700;
  margin-bottom: 6px;
}

.latest-post-item a:hover {
  color: var(--primary);
}

.empty-box {
  text-align: center;
  padding: 44px 20px;
  color: var(--muted);
}

@media (max-width: 1080px) {
  .hero-inner,
  .content-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar-right {
    min-width: 100%;
  }

  .side-column {
    order: -1;
  }
}

@media (max-width: 720px) {
  .topbar-inner {
    height: auto;
    padding: 16px 0;
    flex-direction: column;
    gap: 12px;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero h1,
  .detail-card h1,
  .page-head h1 {
    font-size: 28px;
  }

  .hero-content,
  .card,
  .detail-card,
  .form-card {
    padding: 20px;
  }

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

  .post-title {
    font-size: 19px;
  }
}