/* ============================================================
   喵数据 · ui.css — 全站组件层
   ------------------------------------------------------------
   把首页 v5 已验证过的视觉语言（发丝边 / 微阴影 / hover 上浮 /
   导航下划线 / 区块头渐变短线）固化为全站默认。
   只改「颜色 / 圆角 / 阴影 / 过渡」，不改任何布局与功能逻辑。
   依赖 theme.css 的令牌，加载顺序：style.css → theme.css → ui.css
   ============================================================ */

/* ============================================================
   1. 顶部导航
   ============================================================ */
.nav{
  background:rgba(5,7,15,.80);
  -webkit-backdrop-filter:blur(18px) saturate(1.3);
  backdrop-filter:blur(18px) saturate(1.3);
}
.nav-inner{min-height:64px}
.nav-logo{border-radius:var(--r-m)}
.nav-logo img{
  filter:drop-shadow(0 2px 10px rgba(0,122,251,.32));
  transition:filter .24s var(--ease),transform .24s var(--ease);
}
.nav-brand:hover .nav-logo img{filter:drop-shadow(0 3px 16px rgba(82,219,253,.5));transform:translateY(-1px)}
.brand-txt h1{font-family:var(--font);letter-spacing:-.005em}
.brand-txt p{color:var(--ink4);letter-spacing:.03em}

.nav-links{gap:2px}
.nav-link{
  padding:7px 11px;border-radius:7px;
  font-size:13.5px;letter-spacing:.01em;
  color:var(--ink2);
  transition:color .2s,background .2s;
}
/* hover / active 渐变下划线 */
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;
  height:1.5px;border-radius:2px;background:var(--grad-brand);
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink);background:rgba(82,219,253,.07)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ice);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}

/* 下拉菜单 */
.drop-menu{
  background:rgba(8,13,25,.94);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-xl);
  box-shadow:0 30px 70px -24px rgba(0,0,0,.9),0 0 0 1px rgba(0,122,251,.05);
}
.dm-group{
  font-size:11px;letter-spacing:.14em;font-weight:600;
  color:var(--ink4);border-bottom-color:rgba(255,255,255,.07);
}
.drop-menu a{
  border-radius:7px;padding:6px 9px;margin:1px -4px;
  font-size:13.5px;color:var(--ink2);
  transition:color .18s,background .18s,padding-left .18s;
}
.drop-menu a:hover{color:var(--ice);background:rgba(82,219,253,.07);padding-left:13px}

/* ---- 导航结构自包含 ----
   screen.html / vip.html 等页没有引入 style.css，只有 theme.css + ui.css。
   这里把导航的布局骨架补全，保证任何页面单独接入都能正确排版。 */
.nav{position:sticky;top:0;z-index:50}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:0 26px;min-height:64px;gap:14px}
.nav-brand{display:flex;align-items:center;gap:12px;cursor:pointer;flex:none}
.nav-logo{width:36px;height:36px;flex:none;display:flex;align-items:center;justify-content:center}
.nav-logo img{width:100%;height:100%;object-fit:contain;display:block}
.brand-txt h1{font-size:16.5px;margin:0;font-weight:700}
.brand-txt p{font-size:11px;margin:1px 0 0}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  white-space:nowrap;flex:none;text-decoration:none;cursor:pointer;
  -webkit-user-select:none;user-select:none;
}
.nav-drop{position:relative;display:inline-flex}
.drop-toggle{cursor:pointer}
.caret{width:14px;height:14px;opacity:.65;transition:transform .3s var(--ease)}
.nav-link .caret{
  position:absolute;right:-4px;top:50%;
  transform:translateY(-50%);width:12px;height:12px;opacity:.55;
  transition:transform .3s var(--ease),opacity .2s;
}
.nav-drop.open .nav-link .caret,.nav-drop:hover .nav-link .caret{transform:translateY(-50%) rotate(180deg);opacity:.95}
.drop-menu{
  position:absolute;top:100%;left:50%;
  transform:translateX(-50%) translateY(8px);
  padding:26px 30px;display:grid;gap:2px 26px;
  opacity:0;visibility:hidden;pointer-events:none;z-index:60;
  transition:opacity .2s var(--ease),transform .22s var(--ease),visibility .2s;
}
.nav-drop.open .drop-menu,.nav-drop:hover .drop-menu{
  opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);
}
.dm-col{display:flex;flex-direction:column}
/* 汉堡菜单与移动端抽屉：默认隐藏，仅在 style.css 的首页规则里启用 */
.nav-burger{display:none}
.mobile-nav{display:none}
.mobile-nav.open{display:block}

/* 登录 / 注册 */
.mm-ebtn{border-radius:var(--r-m);transition:all .22s var(--ease)}
.mm-ebtn-ghost{border-color:rgba(255,255,255,.14);color:var(--ink2)}
.mm-ebtn-ghost:hover{border-color:rgba(82,219,253,.4);color:var(--ice);background:rgba(82,219,253,.06)}
.mm-ebtn-solid{
  background:var(--grad-brand);color:#04101F;font-weight:600;
  box-shadow:0 8px 22px -10px rgba(0,122,251,.75);
}
.mm-ebtn-solid:hover{filter:brightness(1.08);box-shadow:0 10px 26px -10px rgba(0,122,251,.9)}

/* 移动端抽屉导航 */
.nav-burger{border-color:rgba(0,122,251,.42) !important;color:var(--brand-l) !important;border-radius:var(--r-m) !important}
.nav-burger:active{background:rgba(0,122,251,.14) !important}
.mobile-nav{
  background:rgba(6,10,20,.985) !important;
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border-bottom:1px solid var(--line2);
}
.mobile-nav a{border-radius:var(--r-m);transition:background .16s,color .16s}
.mobile-nav a:active{background:rgba(0,122,251,.12);color:var(--ice)}
.mn-group{color:var(--ink4);letter-spacing:.14em;font-weight:600}

/* ============================================================
   2. 区块头：kicker 短线 + 标题渐变短线
   ============================================================ */
.sec-head h3,.sec-title{
  letter-spacing:-.02em;
}
.sec-head h3::after{
  content:"";display:block;width:44px;height:3px;border-radius:3px;
  background:var(--grad-brand);margin-top:12px;
}
.sec-head p,.sec-sub{color:var(--ink3)}

/* ============================================================
   3. 卡片系统：发丝边 + 微阴影 + hover 上浮
   ============================================================ */
.mod-card,.ph-card,.kpi-card,.news-card,.about-card,.bd-card,.bp-card,.pcard,.feat{
  border-radius:var(--r-l);
  border:1px solid var(--hair);
  background:linear-gradient(180deg,rgba(255,255,255,.026),rgba(255,255,255,.008));
  box-shadow:var(--shadow);
  transition:transform .24s var(--ease),border-color .24s,box-shadow .24s;
}
/* 可点击类卡片才上浮；图表卡保持稳定，避免 hover 抖动影响读图 */
.mod-card:hover,.news-card:hover,.about-card:hover,.bd-card:hover,.bp-card:hover,.pcard:hover{
  transform:translateY(-3px);
  border-color:rgba(82,219,253,.2);
  box-shadow:var(--shadow-hover);
}
.mod-card:hover h4,.news-card:hover h4{color:var(--ice)}
.ph-card:hover,.kpi-card:hover{border-color:rgba(82,219,253,.16)}
.ph-card-t{color:var(--ink2);letter-spacing:.01em}

/* KPI 行里若含「市场观察」长文卡（.kpi.k3），改成「3 个指标并排 + 观察独占整行」。
   否则那张长文会把整行撑到近 400px，另外三张指标卡下方空掉四分之三。
   用 :has() 自动限定，不影响其余 60 多处普通 4 列 KPI。 */
.kpis:has(> .kpi.k3){grid-template-columns:repeat(3,minmax(0,1fr))}
.kpis > .kpi.k3{grid-column:1/-1}
.kpis > .kpi.k3 .lb{margin-bottom:2px}
@media (max-width:960px){
  .kpis:has(> .kpi.k3){grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:560px){
  .kpis:has(> .kpi.k3){grid-template-columns:1fr}
}

/* ============================================================
   4. 按钮
   ============================================================ */
.btn-primary{
  background:var(--grad-brand);color:#04101F;font-weight:600;
  border-radius:var(--r-m);
  box-shadow:0 12px 32px -12px rgba(0,122,251,.85),inset 0 1px 0 rgba(255,255,255,.25);
  transition:transform .22s var(--ease),box-shadow .22s;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -14px rgba(0,122,251,1),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-ghost{
  border-color:rgba(255,255,255,.16);color:var(--ink);
  border-radius:var(--r-m);
  transition:all .22s var(--ease);
}
.btn-ghost:hover{border-color:rgba(82,219,253,.4);background:rgba(82,219,253,.05)}
.tbtn,.mkt-btn,.cat-tab{border-radius:var(--r-m);transition:all .2s var(--ease)}
.chip{border-radius:var(--r-pill)}

/* ============================================================
   5. 标签
   ============================================================ */
.tag-meas,.tag-est,.tag-vendor{
  border-radius:var(--r-pill);
  padding:2.5px 9px;
  font-size:11px;
}
.trust-src{
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.06);
  background:rgba(255,255,255,.02);
}
.trust-live{color:var(--live);font-weight:600}
.live-dot{background:var(--live);box-shadow:0 0 0 3px rgba(82,219,253,.16)}

/* ============================================================
   6. 数据表格
   ============================================================ */
.dt{
  border-radius:var(--r-l);
  overflow:hidden;
}
.dt thead th{
  background:rgba(255,255,255,.028);
  color:var(--ink3);
  font-size:12px;letter-spacing:.06em;
  border-bottom:1px solid var(--line2);
}
.dt tbody tr{transition:background .16s}
.dt tbody tr:hover{background:rgba(0,122,251,.055)}
.dt td{border-bottom-color:rgba(255,255,255,.05)}

/* ============================================================
   7. 页脚
   ============================================================ */
.foot{
  border-top:1px solid rgba(255,255,255,.05);
  background:linear-gradient(180deg,transparent,rgba(0,122,251,.03));
}
.foot-bar{border-top-color:rgba(255,255,255,.05);color:var(--ink4)}
.foot-bar a{color:var(--ink3);text-decoration:none;transition:color .18s}
.foot-bar a:hover{color:var(--ice)}

/* ============================================================
   8. 移动端：触控目标与安全区兜底
   ============================================================ */
@media (max-width:640px){
  .sec-head h3::after{width:34px;height:2.5px;margin-top:10px}
}

/* 首页 v5 遗留：窄屏下 CTA 两个按钮并排会把文档撑宽，导致整页横向溢出。
   改为整行按钮 + 取消 hero 文本的 30em 上限（30em≈495px > 390px 视口）。 */
@media (max-width:640px){
  body.hp4 .hp4-cta{flex-wrap:wrap;gap:10px}
  body.hp4 .hp4-cta .hp4-btn{flex:1 1 100%;justify-content:center;min-width:0}
  body.hp4 .hp4-lead{max-width:none}
  body.hp4 .hp4-neb{max-width:100%}
  body.hp4 .hp4-caps{flex-wrap:wrap}
}