/* ============================================================
   W平台统一门户 · 全局样式
   中国数联物流科技 · 央企科技蓝设计系统
   ============================================================ */

:root {
  /* 品牌主色（央企科技蓝） */
  --blue-900: #071C47;
  --blue-800: #0A2A6B;
  --blue-700: #0E3A93;
  --blue-600: #1246C4;
  --blue-500: #1A5BE0;
  --blue-400: #2E7CF6;
  --blue-300: #5C9DFF;
  --blue-100: #DCE8FF;
  --blue-50:  #EFF4FF;

  /* 数据/科技辅助色 */
  --cyan-500: #00A8D6;
  --cyan-400: #16C5E8;
  --cyan-50:  #E6F8FC;
  --teal-500: #0FA9A0;

  /* 央企权威点缀色 */
  --gold-500: #C9A063;
  --gold-400: #D8B57E;
  --gold-50:  #FBF5EA;

  /* 语义色 */
  --red-500:  #E64545;
  --red-50:   #FDECEC;
  --green-500:#16A34A;
  --green-50: #E8F7EE;
  --amber-500:#E8930C;
  --amber-50: #FCF3E3;

  /* 中性色 */
  --ink-900: #13203A;
  --ink-700: #33415C;
  --ink-500: #5A6B85;
  --ink-400: #8391A8;
  --ink-300: #A9B5C6;
  --line:    #E4EAF4;
  --line-soft:#EEF2F9;
  --bg:      #F4F7FC;
  --bg-soft: #F8FAFE;
  --white:   #FFFFFF;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(15, 40, 90, .06), 0 1px 4px rgba(15,40,90,.04);
  --shadow-md: 0 4px 16px rgba(15, 40, 90, .08), 0 2px 6px rgba(15,40,90,.05);
  --shadow-lg: 0 12px 34px rgba(7, 28, 71, .14), 0 4px 12px rgba(7,28,71,.08);
  --shadow-blue: 0 8px 24px rgba(18, 70, 196, .28);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;

  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "Segoe UI", "Helvetica Neue", Arial, sans-serif;

  --header-h: 64px;
  --topbar-h: 36px;
}

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

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

body {
  font-family: var(--font);
  color: var(--ink-900);
  background: var(--bg);
  font-size: 14px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.num { font-family: var(--font-num); font-variant-numeric: tabular-nums; }

/* ============ 顶部工具条 ============ */
.topbar {
  height: var(--topbar-h);
  background: var(--blue-900);
  color: rgba(255,255,255,.82);
  font-size: 12.5px;
  position: relative;
  z-index: 60;
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.topbar-left { display: flex; align-items: center; gap: 18px; }
.topbar-left .brand-tag { display: inline-flex; align-items: center; gap: 6px; color: #fff; font-weight: 600; letter-spacing: .5px; }
.topbar-left .brand-tag .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan-400); box-shadow: 0 0 8px var(--cyan-400); }
.topbar-links { display: flex; gap: 18px; }
.topbar-links a { color: rgba(255,255,255,.78); transition: color .2s; }
.topbar-links a:hover { color: #fff; }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.role-switch { display: flex; align-items: center; gap: 4px; }
.role-switch .role-item {
  padding: 2px 10px; border-radius: 20px; color: rgba(255,255,255,.78);
  font-size: 12px; cursor: pointer; transition: all .2s; white-space: nowrap;
}
.role-switch .role-item:hover { color: #fff; }
.role-switch .role-item.active { background: var(--blue-500); color: #fff; font-weight: 600; }
.topbar-right .sep { width: 1px; height: 14px; background: rgba(255,255,255,.22); }
.topbar-right a { color: rgba(255,255,255,.82); font-size: 12.5px; }
.topbar-right a:hover { color: #fff; }
.topbar-right .login-link { display: inline-flex; align-items: center; gap: 5px; }

/* ============ 头部导航 ============ */
.header {
  height: var(--header-h);
  background: var(--blue-800);
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 2px 12px rgba(7,28,71,.25);
}
.header .container { display: flex; align-items: center; height: 100%; gap: 12px; }
.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-mark { width: 42px; height: 42px; flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text .name { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.logo-text .sub { color: rgba(255,255,255,.62); font-size: 11px; letter-spacing: .6px; margin-top: 2px; }

.nav { display: flex; align-items: center; gap: 2px; margin-left: 0; flex: 1 1 auto; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav-item {
  position: relative; padding: 8px 9px; color: rgba(255,255,255,.86);
  font-size: 14px; font-weight: 500; border-radius: 8px; transition: all .2s; white-space: nowrap;
  display: inline-flex; align-items: center; gap: 4px; flex-shrink: 0;
}
.nav-item:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-item.active { color: #fff; background: rgba(255,255,255,.14); font-weight: 600; }
.nav-item.active::after {
  content: ""; position: absolute; left: 11px; right: 11px; bottom: -1px;
  height: 3px; background: var(--cyan-400); border-radius: 3px 3px 0 0;
}
.nav-item .badge-new { font-size: 10px; background: var(--red-500); color:#fff; padding: 1px 5px; border-radius: 6px; margin-left: 2px; transform: translateY(-6px); }

.header-search {
  margin-left: auto; display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
  border-radius: 22px; padding: 7px 8px 7px 14px; flex: 0 1 260px; transition: all .2s;
}
.header-search:focus-within { background: rgba(255,255,255,.16); border-color: var(--cyan-400); }
.header-search input { background: none; border: none; outline: none; color: #fff; width: 100%; font-size: 13.5px; }
.header-search input::placeholder { color: rgba(255,255,255,.5); }
.header-search .search-btn { width: 30px; height: 30px; border-radius: 50%; background: var(--cyan-500); display: grid; place-items: center; flex-shrink: 0; transition: .2s; }
.header-search .search-btn:hover { background: var(--cyan-400); }

.header-auth { margin-left: auto; display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.header-auth .auth-link { color: rgba(255,255,255,.86); font-size: 14px; font-weight: 500; display: inline-flex; align-items: center; gap: 5px; transition: color .2s; white-space: nowrap; }
.header-auth .auth-link:hover { color: #fff; }
.header-auth .auth-sep { width: 1px; height: 14px; background: rgba(255,255,255,.22); }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 40px; padding: 0 20px; border-radius: 8px; font-size: 14px; font-weight: 600;
  transition: all .2s; border: 1px solid transparent; white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: linear-gradient(135deg, var(--blue-500), var(--blue-600)); color: #fff; box-shadow: var(--shadow-blue); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(18,70,196,.36); }
.btn-cyan { background: linear-gradient(135deg, var(--cyan-400), var(--cyan-500)); color: #fff; }
.btn-cyan:hover { transform: translateY(-1px); }
.btn-outline { background: #fff; border-color: var(--line); color: var(--ink-700); }
.btn-outline:hover { border-color: var(--blue-400); color: var(--blue-600); }
.btn-ghost { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.28); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.18); }
.btn-sm { height: 32px; padding: 0 14px; font-size: 13px; border-radius: 7px; }
.btn-lg { height: 48px; padding: 0 28px; font-size: 15px; border-radius: 10px; }
.btn-block { width: 100%; }

/* ============ 通用板块 ============ */
.section { padding: 52px 0; }
.section.bg-white { background: #fff; }
.section.bg-gradient { background: linear-gradient(180deg, var(--blue-800) 0%, var(--blue-900) 100%); }

.section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 26px; }
.section-head .title-group { display: flex; align-items: center; gap: 14px; }
.section-head .bar { width: 5px; height: 26px; background: linear-gradient(180deg, var(--blue-500), var(--cyan-400)); border-radius: 3px; }
.section-head .title { font-size: 22px; font-weight: 700; color: var(--ink-900); letter-spacing: .5px; }
.section-head .title-en { font-size: 12px; color: var(--ink-400); letter-spacing: 2px; text-transform: uppercase; margin-top: 1px; }
.section-head .more { font-size: 13.5px; color: var(--ink-500); display: inline-flex; align-items: center; gap: 4px; transition: color .2s; }
.section-head .more:hover { color: var(--blue-600); }

/* ============ 卡片 ============ */
.card {
  background: #fff; border-radius: var(--radius-md); border: 1px solid var(--line);
  box-shadow: var(--shadow-sm); transition: all .25s; overflow: hidden;
}
.card.hoverable:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--blue-100); }

/* ============ 标签 ============ */
.tag { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; padding: 2px 9px; border-radius: 6px; font-weight: 500; }
.tag-blue { background: var(--blue-50); color: var(--blue-600); }
.tag-cyan { background: var(--cyan-50); color: #0B87A8; }
.tag-gold { background: var(--gold-50); color: #A8803C; }
.tag-green { background: var(--green-50); color: var(--green-500); }
.tag-red { background: var(--red-50); color: var(--red-500); }
.tag-gray { background: var(--bg); color: var(--ink-500); }

/* ============ 页脚 ============ */
.footer { background: var(--blue-900); color: rgba(255,255,255,.72); padding: 48px 0 0; }
.footer-main { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 36px; }
.footer .f-brand .logo-text .name { font-size: 18px; }
.footer .f-brand .slogan { margin-top: 14px; font-size: 13px; color: rgba(255,255,255,.5); line-height: 1.8; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; letter-spacing: .5px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,.66); font-size: 13.5px; transition: color .2s; }
.footer-col ul li a:hover { color: var(--cyan-400); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; display: flex;
  align-items: center; justify-content: space-between; font-size: 12.5px; color: rgba(255,255,255,.45);
}
.footer-bottom .links { display: flex; gap: 20px; }
.footer-bottom .links a:hover { color: #fff; }

/* ============ 面包屑 / 页头 ============ */
.page-hero {
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 55%, var(--blue-500) 100%);
  color: #fff; padding: 56px 0 64px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 46px 46px; opacity: .5;
}
.page-hero .container { position: relative; z-index: 1; display: flex; align-items: center; gap: 48px; }
.page-hero .ph-left { flex: 1; min-width: 0; }
.page-hero .ph-right { flex-shrink: 0; width: 380px; max-width: 100%; }
.ph-search { display: flex; align-items: center; background: #fff; border-radius: 46px; padding: 6px 6px 6px 20px; box-shadow: 0 10px 30px rgba(7,28,71,.35); }
.ph-search svg { flex-shrink: 0; }
.ph-search input { flex: 1; min-width: 0; border: none; outline: none; font-size: 14px; color: var(--ink-900); margin: 0 10px; background: transparent; }
.ph-search input::placeholder { color: var(--ink-400); }
.ph-search .btn { border-radius: 40px; height: 46px; padding: 0 24px; flex-shrink: 0; }
@media (max-width: 900px) {
  .page-hero .container { flex-direction: column; align-items: flex-start; gap: 20px; }
  .page-hero .ph-right { width: 100%; }
}
.page-hero .crumb { font-size: 12.5px; color: rgba(255,255,255,.6); margin-bottom: 10px; display: flex; gap: 6px; align-items: center; }
.page-hero .crumb a:hover { color: #fff; }
.page-hero h1 { font-size: 44px; font-weight: 800; letter-spacing: 1.5px; line-height: 1.2; }
.page-hero .desc { font-size: 16px; color: rgba(255,255,255,.86); margin-top: 12px; max-width: 780px; line-height: 1.8; }

/* ============ 数据大数字 ============ */
.kpi-grid { display: grid; gap: 16px; }
.kpi-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.kpi-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.kpi-card {
  background: #fff; border-radius: var(--radius-md); border: 1px solid var(--line);
  padding: 20px 22px; position: relative; overflow: hidden; box-shadow: var(--shadow-sm);
}
.kpi-card .kpi-label { font-size: 13px; color: var(--ink-500); display: flex; align-items: center; gap: 6px; }
.kpi-card .kpi-value { font-size: 34px; font-weight: 700; color: var(--ink-900); margin-top: 6px; line-height: 1.1; }
.kpi-card .kpi-value .unit { font-size: 15px; font-weight: 500; color: var(--ink-500); margin-left: 4px; }
.kpi-card .kpi-trend { font-size: 12.5px; margin-top: 8px; display: inline-flex; align-items: center; gap: 4px; }
.kpi-card .kpi-trend.up { color: var(--green-500); }
.kpi-card .kpi-trend.down { color: var(--red-500); }
.kpi-card .kpi-ico { position: absolute; right: 16px; top: 16px; width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; opacity: .9; }
.kpi-card .kpi-ico svg { width: 22px; height: 22px; }

/* ============ 网格 ============ */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ============ AI 助手 ============ */
.ai-fab {
  position: fixed; right: 28px; bottom: 28px; z-index: 999;
  height: 58px; padding: 0 22px; border-radius: 29px;
  background: linear-gradient(135deg, var(--cyan-400), var(--blue-500));
  display: flex; align-items: center; gap: 9px; color: #fff; cursor: grab;
  box-shadow: 0 10px 30px rgba(18,70,196,.5); transition: transform .2s;
  touch-action: none; user-select: none; -webkit-user-select: none;
  animation: fabIn .55s cubic-bezier(.34,1.56,.64,1) .1s both;
}
.ai-fab:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(18,70,196,.6); }
.ai-fab.dragging { cursor: grabbing; transform: none !important; transition: none; }
.ai-fab svg { width: 32px; height: 32px; animation: fabHop 2.4s ease-in-out infinite; transform-origin: 50% 100%; }
.ai-fab.dragging svg { animation-play-state: paused; }
.ai-fab .fab-txt { font-size: 16px; font-weight: 700; letter-spacing: 1px; }
.ai-fab .pulse { position: absolute; inset: -3px; border-radius: 32px; border: 2px solid var(--cyan-400); animation: pulse 2.4s infinite; pointer-events: none; }
@keyframes pulse { 0% { transform: scale(1); opacity: .7; } 100% { transform: scale(1.12); opacity: 0; } }
@keyframes fabIn { from { opacity: 0; transform: translateY(64px) scale(.82); } 60% { opacity: 1; transform: translateY(-8px) scale(1.04); } 100% { opacity: 1; transform: none; } }
@keyframes fabHop { 0%, 100% { transform: translateY(0); } 8% { transform: translateY(-8px); } 16% { transform: translateY(0); } 24% { transform: translateY(-4px) scale(1.05); } 32% { transform: translateY(0); } }

.ai-greet {
  position: fixed; right: 28px; bottom: 96px; z-index: 998; max-width: 320px;
  display: none; align-items: flex-start; gap: 8px;
}
.ai-greet.show { display: flex; animation: greetIn .45s cubic-bezier(.34,1.56,.64,1); }
@keyframes greetIn { from { opacity: 0; transform: translateY(12px) scale(.94); } to { opacity: 1; transform: none; } }
.ai-greet-bubble {
  background: #fff; border: 1px solid var(--line); border-radius: 14px 14px 4px 14px;
  padding: 12px 15px; font-size: 13.5px; color: var(--ink-700); line-height: 1.7;
  box-shadow: var(--shadow-lg);
}
.ai-greet-bubble b { color: var(--blue-600); }
.ai-greet-close {
  width: 22px; height: 22px; border-radius: 50%; background: var(--ink-300); color: #fff;
  font-size: 12px; display: grid; place-items: center; flex-shrink: 0; margin-top: 4px;
}
.ai-greet-close:hover { background: var(--ink-400); }

.ai-quick { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.ai-quick-btn {
  display: inline-block; padding: 5px 12px; background: var(--blue-600); color: #fff;
  border-radius: 15px; font-size: 12.5px; cursor: pointer; transition: .2s;
}
.ai-quick-btn:hover { background: var(--blue-500); }

.ai-panel {
  position: fixed; right: 28px; bottom: 100px; z-index: 999; width: 380px; max-width: calc(100vw - 40px);
  background: #fff; border-radius: 16px; box-shadow: var(--shadow-lg); overflow: hidden;
  display: none; flex-direction: column; height: 560px; max-height: calc(100vh - 130px);
  border: 1px solid var(--line);
}
.ai-panel.open { display: flex; animation: aiIn .25s ease; }
@keyframes aiIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.ai-panel-head { background: linear-gradient(135deg, var(--blue-800), var(--blue-600)); color: #fff; padding: 16px 18px; display: flex; align-items: center; gap: 12px; }
.ai-panel-head .ai-avatar { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,.16); display: grid; place-items: center; flex-shrink: 0; }
.ai-panel-head .ai-avatar svg { width: 26px; height: 26px; }
.ai-panel-head .ai-title { font-weight: 600; font-size: 15px; }
.ai-panel-head .ai-status { font-size: 11.5px; color: rgba(255,255,255,.72); display: flex; align-items: center; gap: 5px; }
.ai-panel-head .ai-status .live { width: 6px; height: 6px; border-radius: 50%; background: #4ADE80; }
.ai-panel-head .close { margin-left: auto; color: rgba(255,255,255,.8); width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; }
.ai-panel-head .close:hover { background: rgba(255,255,255,.15); }
.ai-body { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 14px; background: var(--bg-soft); }
.ai-msg { max-width: 82%; padding: 10px 13px; border-radius: 12px; font-size: 13.5px; line-height: 1.6; }
.ai-msg.bot { background: #fff; border: 1px solid var(--line); align-self: flex-start; border-top-left-radius: 4px; }
.ai-msg.user { background: var(--blue-600); color: #fff; align-self: flex-end; border-top-right-radius: 4px; }
.ai-msg .suggest { margin-top: 8px; }
.ai-msg .suggest .chip { display: inline-block; margin: 3px 5px 0 0; padding: 4px 10px; background: var(--blue-50); color: var(--blue-600); border-radius: 14px; font-size: 12px; cursor: pointer; }
.ai-msg .suggest .chip:hover { background: var(--blue-100); }
.ai-input { padding: 12px 14px; border-top: 1px solid var(--line); display: flex; gap: 10px; align-items: center; background: #fff; }
.ai-input input { flex: 1; border: 1px solid var(--line); border-radius: 20px; padding: 9px 16px; outline: none; font-size: 13.5px; }
.ai-input input:focus { border-color: var(--blue-400); }
.ai-input .send { width: 36px; height: 36px; border-radius: 50%; background: var(--blue-600); color: #fff; display: grid; place-items: center; flex-shrink: 0; }
.ai-input .send:hover { background: var(--blue-500); }

/* ============ 提示气泡 ============ */
.tooltip { position: relative; }

/* ============ 品牌 Logo 图 ============ */
.logo-img { height: 34px; width: auto; display: block; }
.logo-divider { width: 1px; height: 26px; background: rgba(255,255,255,.28); flex-shrink: 0; }

/* ============ 吸顶头部滚动态 ============ */
.header { transition: box-shadow .3s ease; }
.header.scrolled { box-shadow: 0 6px 22px rgba(7,28,71,.42); }

/* ============ 滚动渐入动画（WOW 风格） ============ */
.rv { opacity: 0; transition: opacity .7s ease, transform .7s cubic-bezier(.22,.61,.36,1); will-change: opacity, transform; }
.rv-up { transform: translateY(34px); }
.rv-left { transform: translateX(-38px); }
.rv-right { transform: translateX(38px); }
.rv-zoom { transform: scale(.92); }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } }

/* ============ 方案封面插画 ============ */
.sol-cover-ico { position: absolute; right: 16px; top: 50%; transform: translateY(-50%); width: 92px; height: 92px; opacity: .95; pointer-events: none; }
.sol-cover-ico svg { width: 100%; height: 100%; }
.solution-card .cover .grid-line { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px); background-size: 24px 24px; }

/* ============ 新闻缩略图 ============ */
.news-thumb { width: 200px; height: 128px; border-radius: 10px; flex-shrink: 0; position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.news-thumb .nt-ico { width: 50px; height: 50px; color: rgba(255,255,255,.95); position: relative; z-index: 1; }
.news-thumb .nt-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.09) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.09) 1px, transparent 1px); background-size: 22px 22px; }

/* ============ 区块装饰背景 ============ */
.section-deco { position: relative; overflow: hidden; }
.section-deco::before { content: ""; position: absolute; width: 460px; height: 460px; border-radius: 50%; background: radial-gradient(circle, rgba(46,124,246,.09), transparent 70%); top: -180px; right: -140px; pointer-events: none; }
.section-deco::after { content: ""; position: absolute; width: 380px; height: 380px; border-radius: 50%; background: radial-gradient(circle, rgba(22,197,232,.07), transparent 70%); bottom: -160px; left: -120px; pointer-events: none; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .grid-4, .kpi-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4, .kpi-grid.cols-4, .kpi-grid.cols-3 { grid-template-columns: 1fr; }
  .nav { overflow-x: auto; }
  .logo-img { height: 32px; }
  .news-thumb { width: 100%; height: 150px; }
}