/* ===== 设计变量 ===== */
:root {
  --bg: #f5f8fc;
  --card: #ffffff;
  --primary: #1d6ff2;
  --primary-soft: #e8f1ff;
  --primary-dark: #1454c4;
  --accent: #12b3a8;
  --text: #16202f;
  --text-soft: #3c4a5e;
  --muted: #6b7a90;
  --line: #e4ebf4;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(22, 32, 47, .04), 0 8px 24px -12px rgba(22, 32, 47, .12);
  --shadow-hover: 0 2px 4px rgba(22, 32, 47, .06), 0 16px 36px -16px rgba(29, 111, 242, .28);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--primary); }
h1, h2, h3 { line-height: 1.35; margin: 0; font-weight: 650; letter-spacing: -.01em; }
p { margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 22px; }

/* ===== 顶栏 ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; gap: 22px;
  height: 68px;
}
.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand:hover { color: inherit; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), #4f9bff 60%, var(--accent));
  color: #fff; font-weight: 800; font-size: 14px; letter-spacing: .5px;
  box-shadow: 0 6px 16px -8px rgba(29, 111, 242, .9);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 16.5px; letter-spacing: -.2px; }
.brand-text small { color: var(--muted); font-size: 11.5px; }

.search { margin-left: auto; display: flex; align-items: center; flex: 1; max-width: 420px; }
.search input {
  flex: 1; height: 40px; padding: 0 15px;
  border: 1px solid var(--line); border-right: 0;
  border-radius: 999px 0 0 999px;
  background: #f7fafd; font-size: 14px; color: var(--text);
  outline: none; transition: .18s;
}
.search input:focus { background: #fff; border-color: #bcd4f7; }
.search button {
  height: 40px; padding: 0 20px; border: 0; cursor: pointer;
  border-radius: 0 999px 999px 0;
  background: var(--primary); color: #fff; font-size: 14px; font-weight: 600;
  transition: .18s;
}
.search button:hover { background: var(--primary-dark); }

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(1200px 480px at 4% -34%, rgba(78, 152, 255, .58), transparent 62%),
    radial-gradient(940px 440px at 98% -44%, rgba(18, 179, 168, .40), transparent 60%),
    linear-gradient(135deg, #07203e 0%, #0f3a6d 46%, #0a2749 100%);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
/* 网格纹理，向顶部聚拢 */
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .055) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(circle at 32% -10%, #000 0%, transparent 78%);
  mask-image: radial-gradient(circle at 32% -10%, #000 0%, transparent 78%);
}
/* 底部一道光，收口用 */
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(126, 179, 255, .55), rgba(18, 179, 168, .45), transparent);
}
.hero-inner {
  position: relative; z-index: 1;
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 48px; padding-top: 66px; padding-bottom: 60px; flex-wrap: wrap;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, .10); border: 1px solid rgba(255, 255, 255, .18);
  font-size: 12.5px; letter-spacing: .3px; color: rgba(255, 255, 255, .88);
  backdrop-filter: blur(6px);
}
.hero-badge i {
  width: 6px; height: 6px; border-radius: 50%; background: #4ade80;
  box-shadow: 0 0 0 3px rgba(74, 222, 128, .22);
  animation: heroPulse 2.2s ease-in-out infinite;
}
@keyframes heroPulse { 50% { opacity: .3; } }
.hero-copy { min-width: 0; flex: 1 1 320px; }
.hero-copy h1 {
  font-size: 42px; margin-top: 18px; color: #fff;
  letter-spacing: -1.4px; line-height: 1.16; font-weight: 700;
  text-shadow: 0 12px 32px rgba(0, 0, 0, .28);
  overflow-wrap: break-word;
}
.hero-copy p { margin-top: 15px; color: rgba(255, 255, 255, .72); font-size: 15.5px; max-width: 600px; }
.hero-stats {
  display: flex; gap: 0;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 18px; padding: 16px 4px;
  backdrop-filter: blur(12px);
  box-shadow: 0 24px 48px -28px rgba(0, 0, 0, .7), inset 0 1px 0 rgba(255, 255, 255, .10);
}
.stat { display: flex; flex-direction: column; padding: 0 26px; }
.stat + .stat { border-left: 1px solid rgba(255, 255, 255, .14); }
.stat b { font-size: 30px; font-weight: 700; letter-spacing: -.6px; color: #fff; font-variant-numeric: tabular-nums; line-height: 1.2; }
.stat span { font-size: 12.5px; color: rgba(255, 255, 255, .62); }

/* ===== 布局 ===== */
.layout {
  display: grid; grid-template-columns: minmax(0, 1fr) 318px;
  gap: 30px; padding-top: 26px; padding-bottom: 60px; align-items: start;
}

/* ===== 分类胶囊 ===== */
.chips { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 18px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 15px; border-radius: 999px;
  background: #fff; border: 1px solid var(--line);
  font-size: 13.5px; color: var(--text-soft);
  transition: .18s;
}
.chip i { font-style: normal; font-size: 11.5px; color: var(--muted); }
.chip:hover { border-color: #b9d2f8; color: var(--primary); }
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.chip.active i { color: rgba(255, 255, 255, .75); }

/* ===== 新闻卡片 ===== */
.feed { display: flex; flex-direction: column; gap: 14px; }
.card {
  display: flex; gap: 18px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 22px;
  box-shadow: var(--shadow);
  transition: transform .18s, box-shadow .18s, border-color .18s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: #cfe0f8; }
.card-body { min-width: 0; flex: 1; }
.card-meta {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--muted); margin-bottom: 8px;
}
.tag {
  display: inline-block; padding: 2.5px 9px; border-radius: 6px;
  background: var(--primary-soft); color: var(--primary-dark);
  font-size: 11.5px; font-weight: 600;
}
.tag-hot { background: #fff1e6; color: #c2410c; }
.src { color: var(--text-soft); font-weight: 500; }
.dot { color: #c3cede; }
.card h2 { font-size: 18px; margin-bottom: 7px; overflow-wrap: break-word; }
.card h2 a { transition: color .15s; }
.card h2 a:hover { color: var(--primary); }
.summary {
  color: var(--text-soft); font-size: 14px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-foot { display: flex; align-items: center; gap: 16px; margin-top: 12px; }
.read { font-size: 13px; color: var(--primary); font-weight: 600; }
.out { font-size: 12.5px; color: var(--muted); }
.out:hover { color: var(--accent); }
.thumb {
  width: 148px; height: 100px; flex-shrink: 0;
  border-radius: 10px; background-size: cover; background-position: center;
  background-color: #eef3fa;
}

/* ===== 分页 ===== */
.pager {
  display: flex; align-items: center; justify-content: center; gap: 16px;
  margin-top: 28px; font-size: 14px;
}
.pager a, .pager .disabled {
  padding: 8px 18px; border-radius: 9px;
  border: 1px solid var(--line); background: #fff;
}
.pager a:hover { border-color: var(--primary); color: var(--primary); }
.pager .disabled { color: #b6c1d1; }
.pager-info { color: var(--muted); font-size: 13.5px; }

/* ===== 空状态 ===== */
.empty {
  background: #fff; border: 1px dashed var(--line); border-radius: var(--radius);
  padding: 64px 24px; text-align: center;
}
.empty h3 { font-size: 17px; margin-bottom: 8px; }
.empty p { color: var(--muted); font-size: 14px; margin-bottom: 18px; }

/* ===== 侧栏 ===== */
.side-col { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 88px; }
.panel {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow);
}
.panel h3 {
  font-size: 14px; margin-bottom: 14px; padding-left: 10px;
  border-left: 3px solid var(--primary); line-height: 1.2;
}
.rank { list-style: none; margin: 0; padding: 0; counter-reset: r; }
.rank li {
  counter-increment: r; position: relative;
  padding-left: 26px; margin-bottom: 12px; font-size: 13.5px;
}
.rank li::before {
  content: counter(r); position: absolute; left: 0; top: 2px;
  width: 18px; height: 18px; border-radius: 5px;
  display: grid; place-items: center;
  background: #eef3fa; color: var(--muted);
  font-size: 11px; font-weight: 700;
}
.rank li:nth-child(1)::before { background: #ffe8e8; color: #d9363e; }
.rank li:nth-child(2)::before { background: #fff2e0; color: #d97706; }
.rank li:nth-child(3)::before { background: #e6f4ff; color: var(--primary); }
.rank a { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.rank span { display: block; color: var(--muted); font-size: 11.5px; margin-top: 2px; }

.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 13.5px; }
.timeline li:last-child { border-bottom: 0; }
.timeline a { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.timeline time { display: block; color: var(--muted); font-size: 11.5px; margin-top: 3px; }

.src-list { list-style: none; margin: 0; padding: 0; }
.src-list li { display: flex; align-items: center; gap: 9px; padding: 6px 0; font-size: 13px; }
.src-name { width: 86px; flex-shrink: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-soft); }
.src-bar { flex: 1; height: 6px; background: #eef3fa; border-radius: 999px; overflow: hidden; }
.src-bar i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, #7eb3ff, var(--primary)); min-width: 3px; }
.src-list b { width: 26px; text-align: right; font-size: 12px; color: var(--muted); font-weight: 500; font-variant-numeric: tabular-nums; }

.about p { font-size: 13.5px; color: var(--text-soft); }
.about p + p { margin-top: 8px; }

/* ===== 文章详情 ===== */
.article-wrap { padding-top: 26px; padding-bottom: 60px; max-width: 880px; }
.crumbs { display: flex; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.crumbs a:hover { color: var(--primary); }
.article {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 40px 44px; box-shadow: var(--shadow);
}
.article-head h1 { font-size: 27px; letter-spacing: -.5px; margin: 12px 0 14px; overflow-wrap: break-word; }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--muted); }
.kw { color: var(--accent); }
.article-cover { margin: 24px 0; border-radius: 10px; overflow: hidden; background: #f2f6fb; }
.article-cover img { width: 100%; display: block; }
.article-body { margin: 26px 0; }
.article-body > * + * { margin-top: 13px; }
.lead.muted { color: var(--muted); font-size: 14.5px; }
.lead { font-size: 16px; color: var(--text-soft); line-height: 1.9; overflow-wrap: break-word; }
.lead-cut { font-size: 12.5px; color: var(--muted); margin-left: 4px; }
.fulltext { margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--line); }
.fulltext p { font-size: 15.5px; line-height: 2; color: var(--text); margin-bottom: 15px; text-align: justify; }
.fulltext-note { font-size: 12px; color: var(--muted); margin-top: 4px; line-height: 1.7; }
.fulltext-tip { font-size: 12.5px; color: #8a6d3b; background: #fff8e6; border: 1px solid #f2e2bd; border-radius: 8px; padding: 8px 12px; line-height: 1.7; }
.title-original { font-size: 13.5px; color: var(--muted); margin: -6px 0 12px; line-height: 1.6; font-weight: 400; }
.card-original { margin: -2px 0 7px; }
.tag-en { background: #eef4ff; color: #1d4ed8; }
.tag-full { background: #ecfdf3; color: #047857; }
.article-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 24px; border-radius: 10px;
  border: 1px solid var(--line); background: #fff;
  font-size: 14px; font-weight: 600; color: var(--text-soft);
  cursor: pointer; transition: .18s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.notice {
  margin-top: 26px; padding-top: 16px; border-top: 1px dashed var(--line);
  font-size: 12.5px; color: var(--muted); line-height: 1.8;
}
.related { margin-top: 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 26px; }
.related h3 { font-size: 15px; margin-bottom: 14px; }
.related ul { list-style: none; margin: 0; padding: 0; }
.related li { padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.related li:last-child { border-bottom: 0; }
.related li span { display: block; font-size: 12px; margin-top: 2px; }

/* ===== 页脚 ===== */
.site-footer { border-top: 1px solid var(--line); background: #fff; padding: 26px 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: var(--text-soft); }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .side-col { position: static; }
  .hero-inner { align-items: flex-start; padding-top: 48px; padding-bottom: 46px; gap: 32px; }
  .hero-copy h1 { font-size: 34px; letter-spacing: -1px; }
}
@media (max-width: 640px) {
  .header-inner { height: auto; flex-wrap: wrap; padding: 12px 0; gap: 12px; }
  .search { order: 3; width: 100%; max-width: none; margin-left: 0; }
  .brand-text small { display: none; }
  .hero-inner { padding-top: 34px; padding-bottom: 34px; gap: 22px; }
  .hero-badge { font-size: 11.5px; padding: 5px 12px; }
  .hero-copy h1 { font-size: 24px; letter-spacing: -.6px; }
  .hero-copy p { font-size: 13.5px; }
  .hero-stats { width: 100%; padding: 12px 2px; }
  .stat { padding: 0 16px; flex: 1; }
  .stat b { font-size: 22px; }
  .stat span { font-size: 11.5px; }
  .card { padding: 16px 17px; }
  .card h2 { font-size: 16.5px; }
  .thumb { display: none; }
  .article { padding: 26px 20px; }
  .article-head h1 { font-size: 21px; }
  .footer-inner { flex-direction: column; }
}