/* ============================================================
   Skill 热搜平台 · 白色科技风主题（简单大气）
   ============================================================ */
:root {
  --bg: #f4f6fb;
  --bg-soft: #eef1f8;
  --surface: #ffffff;
  --surface-2: #f7f9fd;
  --text: #1b2233;
  --text-soft: #6a7488;
  --text-faint: #97a0b3;
  --border: rgba(24, 39, 75, .10);
  --border-strong: rgba(24, 39, 75, .18);
  --primary: #4f7cff;
  --primary-2: #18b6d8;
  --primary-3: #8b5cf6;
  --grad: linear-gradient(135deg, #18b6d8 0%, #4f7cff 50%, #8b5cf6 100%);
  --grad-soft: linear-gradient(135deg, rgba(34, 182, 216, .08), rgba(139, 92, 246, .08));
  --success: #14b8a6;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 16px;
  --shadow: 0 4px 22px rgba(24, 39, 75, .07);
  --shadow-lg: 0 14px 44px rgba(24, 39, 75, .12);
  --glow: 0 0 0 1px rgba(79, 124, 255, .28), 0 12px 34px rgba(79, 124, 255, .14);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* 科技背景：淡网格 + 角落极淡渐变光晕 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(34, 182, 216, .10), transparent 60%),
    radial-gradient(1000px 560px at 102% 0%, rgba(139, 92, 246, .10), transparent 55%),
    radial-gradient(900px 700px at 50% 122%, rgba(79, 124, 255, .08), transparent 60%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed;
  inset: -2px;
  z-index: -1;
  opacity: .5;
  background-image:
    linear-gradient(rgba(24, 39, 75, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 39, 75, .035) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 80%);
  mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 80%);
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }
::selection { background: rgba(79, 124, 255, .22); color: #0b1430; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(24, 39, 75, .16); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(24, 39, 75, .28); }

/* ---------------- 顶部导航 ---------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(79, 124, 255, .06), 0 6px 24px rgba(24, 39, 75, .05);
}
.nav-inner { max-width: 1260px; margin: 0 auto; display: flex; align-items: center; gap: 16px; padding: 0 22px; height: 64px; }
.logo {
  font-weight: 800; font-size: 19px; letter-spacing: .3px; display: flex; align-items: center; gap: 8px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.search-box { flex: 1; max-width: 480px; position: relative; }
.search-box input {
  width: 100%; padding: 10px 14px 10px 38px; border-radius: 999px;
  border: 1px solid var(--border); background: #fff; color: var(--text); outline: none;
  transition: .2s; box-shadow: 0 1px 3px rgba(24, 39, 75, .04);
}
.search-box input::placeholder { color: var(--text-faint); }
.search-box input:focus { border-color: rgba(79, 124, 255, .5); background: #fff; box-shadow: 0 0 0 4px rgba(79, 124, 255, .12); }
.search-box .ico { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-faint); }
.nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.nav-link { color: var(--text-soft); padding: 8px 12px; border-radius: 10px; transition: .15s; }
.nav-link:hover { background: var(--surface-2); text-decoration: none; color: var(--text); }

/* ---------------- 按钮 ---------------- */
.btn {
  border: 1px solid var(--border-strong); background: #fff; color: var(--text);
  padding: 9px 18px; border-radius: 11px; font-size: 14px; transition: .18s;
  box-shadow: 0 1px 2px rgba(24, 39, 75, .04);
}
.btn:hover { border-color: rgba(79, 124, 255, .45); color: var(--primary); background: #fff; transform: translateY(-1px); }
.btn-primary {
  background: var(--grad); border: none; color: #fff; font-weight: 600;
  box-shadow: 0 6px 20px rgba(79, 124, 255, .32);
}
.btn-primary:hover { box-shadow: 0 10px 30px rgba(79, 124, 255, .45); transform: translateY(-1px); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 9px; }
.btn-danger { color: var(--danger); border-color: rgba(239, 68, 68, .35); }
.btn-danger:hover { background: rgba(239, 68, 68, .08); color: var(--danger); }
.btn-ghost { background: transparent; border-color: transparent; box-shadow: none; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

/* ---------------- 布局 ---------------- */
.container { max-width: 1260px; margin: 26px auto; padding: 0 22px; }
.layout { display: grid; grid-template-columns: 248px 1fr; gap: 24px; }
@media (max-width: 920px) { .layout { grid-template-columns: 1fr; } .sidebar { display: none; } }

/* ---------------- Hero ---------------- */
.hero {
  position: relative; overflow: hidden; border-radius: 22px; padding: 46px 42px; margin-bottom: 26px;
  background: linear-gradient(135deg, rgba(255, 255, 255, .9), rgba(247, 249, 253, .9));
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}
.hero::before {
  content: ""; position: absolute; width: 420px; height: 420px; right: -120px; top: -160px;
  background: conic-gradient(from 0deg, transparent, rgba(79, 124, 255, .22), transparent 40%);
  filter: blur(24px); animation: spin 18s linear infinite; opacity: .55;
}
.hero::after {
  content: ""; position: absolute; width: 320px; height: 320px; left: -100px; bottom: -150px;
  background: conic-gradient(from 180deg, transparent, rgba(139, 92, 246, .22), transparent 45%);
  filter: blur(24px); animation: spin 22s linear infinite reverse; opacity: .5;
}
.hero > * { position: relative; z-index: 1; }
.hero h1 {
  margin: 0; font-size: 38px; font-weight: 800; letter-spacing: .5px; line-height: 1.25;
  background: linear-gradient(135deg, #0ea5b7, #4f46e5 55%, #7c3aed);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { color: var(--text-soft); margin: 12px 0 0; font-size: 15.5px; max-width: 660px; }
.hero .pills { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }
.hero .pill {
  font-size: 12.5px; padding: 6px 14px; border-radius: 999px; color: #3b4a6b;
  background: rgba(79, 124, 255, .08); border: 1px solid rgba(79, 124, 255, .18);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- 侧边筛选 ---------------- */
.sidebar {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; height: fit-content; box-shadow: var(--shadow);
}
.sidebar h4 { margin: 16px 0 8px; font-size: 12px; color: var(--text-faint); letter-spacing: .12em; text-transform: uppercase; }
.sidebar h4:first-child { margin-top: 0; }
.cat-item {
  padding: 8px 10px; border-radius: 10px; cursor: pointer; display: flex; align-items: center; gap: 6px;
  color: var(--text-soft); transition: .15s; border-left: 3px solid transparent;
}
.cat-item:hover { background: var(--surface-2); color: var(--text); }
.cat-item.active { background: rgba(79, 124, 255, .1); color: #3b46c9; border-left-color: var(--primary); font-weight: 600; }
.cat-child { padding-left: 18px; font-size: 13px; }
.chip {
  display: inline-flex; align-items: center; gap: 4px; padding: 5px 12px; border-radius: 999px; cursor: pointer;
  font-size: 13px; margin: 3px; background: var(--surface); border: 1px solid var(--border); color: var(--text-soft);
  transition: .15s;
}
.chip:hover { color: var(--text); border-color: var(--border-strong); }
.chip.active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 4px 14px rgba(79, 124, 255, .3); }

/* ---------------- 工具栏 ---------------- */
.toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.toolbar strong { font-size: 18px; }
.toolbar .sort { margin-left: auto; }
select, input[type=text], input[type=email], input[type=password], input[type=number], textarea {
  padding: 9px 13px; border: 1px solid var(--border); border-radius: 11px; outline: none;
  font-family: inherit; font-size: 14px; background: #fff; color: var(--text); transition: .15s;
  box-shadow: 0 1px 2px rgba(24, 39, 75, .03);
}
select:focus, input:focus, textarea:focus { border-color: rgba(79, 124, 255, .5); box-shadow: 0 0 0 3px rgba(79, 124, 255, .12); background: #fff; }
option { background: #fff; color: var(--text); }

/* ---------------- 卡片网格 ---------------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(264px, 1fr)); gap: 18px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px;
  box-shadow: var(--shadow); transition: .2s; cursor: pointer; position: relative; overflow: hidden;
}
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius); pointer-events: none;
  background: radial-gradient(150px 80px at 82% -12%, rgba(79, 124, 255, .08), transparent 60%);
}
.card:hover { transform: translateY(-5px); border-color: rgba(79, 124, 255, .4); box-shadow: var(--glow); }
.card .icon { font-size: 32px; }
.card .title { font-weight: 700; margin: 10px 0 5px; font-size: 15.5px; }
.card .desc { color: var(--text-soft); font-size: 13px; height: 40px; overflow: hidden; }
.card .meta { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; font-size: 12px; color: var(--text-soft); }
.heat-badge {
  background: var(--grad); color: #fff; border-radius: 999px; padding: 3px 11px; font-weight: 700; font-size: 12px;
  box-shadow: 0 3px 12px rgba(79, 124, 255, .35);
}
.rank-badge {
  position: absolute; top: -8px; left: -8px; width: 30px; height: 30px; border-radius: 50%;
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1); color: #334155; display: flex; align-items: center;
  justify-content: center; font-weight: 800; font-size: 13px; box-shadow: 0 4px 12px rgba(24, 39, 75, .15);
  border: 1px solid var(--border-strong); z-index: 2;
}
.rank-1 { background: linear-gradient(135deg, #f59e0b, #fde68a); color: #5b3b07; box-shadow: 0 0 16px rgba(245, 158, 11, .5); }
.rank-2 { background: linear-gradient(135deg, #94a3b8, #e2e8f0); color: #334155; box-shadow: 0 0 12px rgba(148, 163, 184, .45); }
.rank-3 { background: linear-gradient(135deg, #b45309, #f59e0b); color: #fff; box-shadow: 0 0 12px rgba(180, 83, 9, .45); }
.featured-tag { position: absolute; top: 12px; right: 12px; background: linear-gradient(135deg, #f59e0b, #fbbf24); color: #5b3b07; font-weight: 700; font-size: 11px; padding: 3px 9px; border-radius: 8px; z-index: 2; }

/* ---------------- 标签/徽章 ---------------- */
.tag { display: inline-block; background: rgba(79, 124, 255, .1); color: #3b46c9; border: 1px solid rgba(79, 124, 255, .2); border-radius: 7px; padding: 2px 9px; font-size: 12px; margin: 2px; }
.badge-free { background: rgba(20, 184, 166, .12); color: #0f766e; border: 1px solid rgba(20, 184, 166, .28); padding: 2px 8px; border-radius: 7px; }
.badge-paid { background: rgba(245, 158, 11, .14); color: #b45309; border: 1px solid rgba(245, 158, 11, .3); padding: 2px 8px; border-radius: 7px; }

/* ---------------- 详情页 ---------------- */
.detail-head {
  display: flex; gap: 22px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.detail-head::before { content: ""; position: absolute; inset: 0; background: radial-gradient(220px 120px at 95% 0%, rgba(139, 92, 246, .08), transparent 60%); }
.detail-head .icon { font-size: 56px; }
.detail-stats { display: flex; gap: 26px; margin-top: 16px; flex-wrap: wrap; }
.detail-stats .stat { text-align: center; }
.detail-stats .stat b { font-size: 21px; display: block; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.detail-stats .stat span { color: var(--text-soft); font-size: 12px; }
.platform-tabs { display: flex; gap: 8px; margin: 14px 0; flex-wrap: wrap; }
.platform-tab { border: 1px solid var(--border); padding: 9px 15px; border-radius: 11px; cursor: pointer; background: #fff; color: var(--text-soft); transition: .15s; }
.platform-tab:hover { color: var(--text); }
.platform-tab.active { border-color: rgba(79, 124, 255, .55); color: #fff; background: var(--grad); box-shadow: 0 4px 14px rgba(79, 124, 255, .3); }
.install-box {
  background: #0f1626; color: #e2e8f0; border: 1px solid rgba(79, 124, 255, .3);
  border-radius: 12px; padding: 15px 16px; font-family: "SFMono-Regular", Consolas, monospace; position: relative;
  box-shadow: inset 0 0 24px rgba(79, 124, 255, .08);
}
.install-box code { color: #7ef0ff; }
.section {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px;
  margin-top: 20px; box-shadow: var(--shadow);
}
.section h3 { margin-top: 0; font-size: 16px; }
.carousel img { width: 100%; max-height: 360px; object-fit: cover; border-radius: 12px; border: 1px solid var(--border); }
.stars { color: var(--warning); letter-spacing: 2px; }
.comment { border-bottom: 1px solid var(--border); padding: 13px 0; }
.comment .head { display: flex; align-items: center; gap: 8px; margin-bottom: 5px; }
.avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--grad); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; box-shadow: 0 4px 12px rgba(79, 124, 255, .3); }

/* ---------------- 表单 ---------------- */
.form-row { margin-bottom: 15px; }
.form-row label { display: block; font-weight: 600; margin-bottom: 7px; color: var(--text); }
.form-row .hint { color: var(--text-soft); font-size: 12px; font-weight: 400; }
.checkbox-group { display: flex; flex-wrap: wrap; gap: 8px; }
.checkbox-group label { display: flex; align-items: center; gap: 6px; font-weight: 400; border: 1px solid var(--border); padding: 7px 11px; border-radius: 10px; cursor: pointer; color: var(--text-soft); transition: .15s; background: #fff; }
.checkbox-group label:hover { border-color: var(--border-strong); color: var(--text); }
.checkbox-group input { accent-color: var(--primary); }
input[type=file] { color: var(--text-soft); }
input[type=file]::file-selector-button { background: var(--surface-2); border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 6px 12px; margin-right: 10px; cursor: pointer; }

/* ---------------- 表格 ---------------- */
table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow); }
th, td { padding: 11px 13px; text-align: left; border-bottom: 1px solid var(--border); font-size: 13px; }
th { background: var(--surface-2); color: var(--text-soft); font-weight: 600; letter-spacing: .03em; }
tr:hover td { background: var(--surface-2); }

/* ---------------- 分页 / 标签 ---------------- */
.pagination { display: flex; gap: 8px; justify-content: center; margin: 26px 0; }
.pagination button { min-width: 38px; }
.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--border); margin-bottom: 18px; flex-wrap: wrap; }
.tab { padding: 11px 18px; cursor: pointer; border-bottom: 2px solid transparent; color: var(--text-soft); transition: .15s; }
.tab:hover { color: var(--text); }
.tab.active { color: #3b46c9; border-color: var(--primary); font-weight: 600; }

/* ---------------- 模态 ---------------- */
.modal-mask { position: fixed; inset: 0; background: rgba(24, 39, 75, .32); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
.modal { background: #fff; border: 1px solid var(--border-strong); border-radius: var(--radius); width: 100%; max-width: 580px; max-height: 90vh; overflow: auto; padding: 26px; box-shadow: 0 30px 80px rgba(24, 39, 75, .22); }
.modal h3 { margin-top: 0; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ---------------- Toast ---------------- */
.toast-wrap { position: fixed; top: 76px; right: 22px; z-index: 200; display: flex; flex-direction: column; gap: 10px; }
.toast { background: #fff; color: var(--text); padding: 11px 18px; border-radius: 11px; font-size: 13px; box-shadow: var(--shadow-lg); animation: slidein .2s; border: 1px solid var(--border-strong); }
.toast.success { border-color: rgba(20, 184, 166, .5); box-shadow: 0 0 16px rgba(20, 184, 166, .2); }
.toast.error { border-color: rgba(239, 68, 68, .5); box-shadow: 0 0 16px rgba(239, 68, 68, .2); }
.toast.info { border-color: rgba(79, 124, 255, .5); }
@keyframes slidein { from { transform: translateX(24px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------------- 图表 / 统计卡 ---------------- */
.chart { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.chart h3 { margin-top: 0; font-size: 15px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.stat-card::before { content: ""; position: absolute; inset: 0; background: radial-gradient(150px 70px at 92% -10%, rgba(79, 124, 255, .1), transparent 60%); }
.stat-card .num { font-size: 28px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-card .label { color: var(--text-soft); font-size: 13px; margin-top: 4px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 820px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-2 { grid-template-columns: 1fr; } }
.muted { color: var(--text-soft); }
.empty { text-align: center; color: var(--text-soft); padding: 44px; }
.bar-row { display: flex; align-items: center; gap: 10px; margin: 7px 0; font-size: 13px; }
.bar-row .bar { height: 18px; background: var(--grad); border-radius: 5px; min-width: 4px; box-shadow: 0 0 8px rgba(79, 124, 255, .2); }
.bar-row .name { width: 96px; color: var(--text-soft); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-row .val { width: 42px; text-align: right; color: var(--text-soft); }