/* =========================================================
   川赢科技 v2 — 现代零售 SaaS 风格设计系统
   复用根目录 /assets/images/ 的 logo 与照片素材
   ========================================================= */
/* Noto Sans SC 本地自托管：原 Google Fonts(@import)在中国大陆被墙(ERR_CONNECTION_REFUSED)，
   现改为本地 woff2，零外网请求、离线可用。汉字走 Noto Sans SC，英文/数字按字形回退系统字体。 */
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:300;font-display:swap;
  src:url('../fonts/noto-sans-sc/noto-sans-sc-chinese-simplified-300-normal.woff2') format('woff2'),
      url('../fonts/noto-sans-sc/noto-sans-sc-chinese-simplified-300-normal.woff') format('woff')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:400;font-display:swap;
  src:url('../fonts/noto-sans-sc/noto-sans-sc-chinese-simplified-400-normal.woff2') format('woff2'),
      url('../fonts/noto-sans-sc/noto-sans-sc-chinese-simplified-400-normal.woff') format('woff')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:500;font-display:swap;
  src:url('../fonts/noto-sans-sc/noto-sans-sc-chinese-simplified-500-normal.woff2') format('woff2'),
      url('../fonts/noto-sans-sc/noto-sans-sc-chinese-simplified-500-normal.woff') format('woff')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:700;font-display:swap;
  src:url('../fonts/noto-sans-sc/noto-sans-sc-chinese-simplified-700-normal.woff2') format('woff2'),
      url('../fonts/noto-sans-sc/noto-sans-sc-chinese-simplified-700-normal.woff') format('woff')}
/* latin 子集（声明在 chinese 之后，靠 unicode-range 命中拉丁字符；汉字回退上一个 chinese 文件） */
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:300;font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
  src:url('../fonts/noto-sans-sc/noto-sans-sc-latin-300-normal.woff2') format('woff2'),
      url('../fonts/noto-sans-sc/noto-sans-sc-latin-300-normal.woff') format('woff')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:400;font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
  src:url('../fonts/noto-sans-sc/noto-sans-sc-latin-400-normal.woff2') format('woff2'),
      url('../fonts/noto-sans-sc/noto-sans-sc-latin-400-normal.woff') format('woff')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:500;font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
  src:url('../fonts/noto-sans-sc/noto-sans-sc-latin-500-normal.woff2') format('woff2'),
      url('../fonts/noto-sans-sc/noto-sans-sc-latin-500-normal.woff') format('woff')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:700;font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
  src:url('../fonts/noto-sans-sc/noto-sans-sc-latin-700-normal.woff2') format('woff2'),
      url('../fonts/noto-sans-sc/noto-sans-sc-latin-700-normal.woff') format('woff')}
:root{
  /* 已有 token（index/cases/contact 依赖，保留） */
  --header-h:68px;            /* 顶栏高度，用于轮播 hero 上移贴顶 */
  --c-primary:#2563eb;        /* 科技蓝 */
  --c-primary-d:#1d4ed8;
  --c-cyan:#12b5c9;           /* 青 */
  --c-ink:#0f2147;            /* 深海军蓝（主文字） */
  --c-body:#46506a;           /* 正文灰蓝 */
  --c-muted:#8a93a8;
  --c-line:#e6ecf5;
  --c-bg:#ffffff;
  --c-soft:#f5f8fe;          /* 浅蓝灰交替底 */
  --c-card:#ffffff;
  --c-hot:#ff7a18;           /* 强调橙（仅用于 nav 激活 + 历程节点等局部强调） */
  --grad:linear-gradient(120deg,#2563eb 0%,#12b5c9 100%);
  --grad-axis:linear-gradient(180deg,#2563eb 0%,#12b5c9 100%);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(20,40,90,.08);
  --shadow-soft:0 4px 16px rgba(20,40,90,.06);
  --maxw:1600px;
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;

  /* ===== 设计 Token 扩展（语义对齐，统一调用入口） ===== */
  --color-primary:var(--c-primary);
  --color-primary-d:var(--c-primary-d);
  --color-secondary:var(--c-cyan);
  --color-accent:var(--c-hot);
  --color-neutral-50:#f8fafc;
  --color-neutral-100:#f1f5f9;
  --color-neutral-200:var(--c-line);
  --color-neutral-300:#cbd5e1;
  --color-neutral-400:#94a3b8;
  --color-neutral-500:var(--c-muted);
  --color-neutral-600:var(--c-body);
  --color-neutral-700:#334155;
  --color-neutral-800:#1e293b;
  --color-neutral-900:var(--c-ink);
  --spacing-1:4px;  --spacing-2:8px;  --spacing-3:12px; --spacing-4:16px;
  --spacing-5:24px; --spacing-6:32px; --spacing-8:48px; --spacing-10:64px;
  --radius-md:18px; --radius-lg:24px;
  --shadow-1:0 4px 16px rgba(20,40,90,.06);
  --shadow-2:0 10px 30px rgba(20,40,90,.08);
  --shadow-3:0 18px 50px rgba(15,33,71,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:72px; /* sticky 顶部导航栏高度，供锚点滚动偏移用 */
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden}
/* 全站锚点跳转偏移：预留 sticky 导航栏高度，避免目标被固定头部遮挡 */
[id]{scroll-margin-top:calc(var(--header-h) + 12px)}
body{font-family:var(--font);color:var(--c-body);background:var(--c-bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:26px 0}
.bg-soft{background:var(--c-soft)}

/* ---------- 文字 ---------- */
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--c-primary);background:rgba(37,99,235,.08);padding:6px 14px;border-radius:999px;margin-bottom:16px}
h1,h2,h3{color:var(--c-ink);line-height:1.25;font-weight:700;letter-spacing:0}
h2{font-size:32px;line-height:1.35;margin-bottom:14px;text-wrap:balance}
h3{font-size:20px;margin-bottom:8px}
.lead{font-size:18px;color:var(--c-body);max-width:680px;margin:0 auto}
.section-head{text-align:center;max-width:760px;margin:0 auto 28px}
.section-head p{color:var(--c-body)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;
  transition:.2s;cursor:pointer;border:0}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(37,99,235,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(37,99,235,.4)}
.btn-ghost{background:#fff;color:var(--c-primary);border:1.5px solid var(--c-line)}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-soft)}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;position:-webkit-sticky;top:0;left:0;right:0;width:100%;z-index:50;background:#fff;box-shadow:0 1px 0 var(--c-line);
  border-bottom:1px solid var(--c-line);transition:background .35s ease,border-color .35s ease,box-shadow .35s ease}
/* 透明导航：首屏 hero 轮播可见（滚动到顶部）时启用，滚过 hero 后恢复实色 */
.site-header.is-transparent{background:transparent;backdrop-filter:none;border-bottom-color:transparent;box-shadow:none}
.site-header.is-transparent .logo-img{filter:brightness(0) invert(1)}
.site-header.is-transparent .nav-link{color:#fff}
.site-header.is-transparent .nav-link:hover{color:#fff}
.site-header.is-transparent .nav-link.active{color:#fff}
.site-header.is-transparent .nav-link.active::after{display:none}
.site-header.is-transparent .menu-toggle{color:#fff}
.site-header.is-transparent .nav-cta{box-shadow:none}
/* 展开下拉时强制纯白导航，与 .mega 面板（background:#fff）保持一致，避免半透明白不一致 */
.site-header.is-solid{background:#fff;backdrop-filter:none;border-bottom-color:var(--c-line);transition:background .35s ease,border-color .35s ease}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo-img{height:34px;width:auto}
.nav-links{display:flex;gap:10px;align-items:center}
.nav-item{display:flex;align-items:center}
.nav-link{display:flex;align-items:center;gap:6px;position:relative;
  font-size:15px;font-weight:600;color:var(--c-ink);padding:0 16px;height:68px;white-space:nowrap;transition:color .2s}
.nav-link .caret{width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(45deg) translateY(-2px);transition:transform .25s,opacity .2s;opacity:.55}
.nav-item:hover .nav-link .caret{transform:rotate(225deg) translateY(-2px);opacity:1}
.nav-link:hover{color:var(--c-primary)}
.nav-link.active{color:var(--c-primary)}
.nav-link.active .caret{opacity:1}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:18px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:center;transition:transform .25s}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-cta{margin-left:12px}
.menu-toggle{display:none;background:none;border:0;font-size:26px;cursor:pointer;color:var(--c-ink)}

/* ===== Mega Menu 超级菜单 ===== */
.mega{position:absolute;top:100%;left:0;right:0;width:auto;
  background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  box-shadow:0 24px 48px -24px rgba(15,33,71,.22);padding:28px 0;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .22s,transform .22s,visibility .22s;z-index:60}
.mega.open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-inner{display:grid;grid-template-columns:1fr 1fr 1fr 280px;gap:24px;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.mega-col h4{font-size:13px;font-weight:800;letter-spacing:.04em;color:var(--c-primary);
  margin:0 0 6px;padding-bottom:12px;border-bottom:1px solid var(--c-line)}
.mega-col a{display:block;font-size:14.5px;color:var(--c-ink);text-decoration:none;
  padding:9px 12px;border-radius:10px;transition:background .18s,color .18s;line-height:1.35}
.mega-col a:hover{background:rgba(37,99,235,.07);color:var(--c-primary)}
.mega-col a.active{background:rgba(37,99,235,.10);color:var(--c-primary);font-weight:600}
.mega-col a .sub{display:block;font-size:12px;color:#93a0b8;margin-top:2px;font-weight:400}
.mega-card{background:linear-gradient(150deg,#eef4ff,#f1fbfc);border:1px solid var(--c-line);
  border-radius:12px;padding:18px;height:100%;display:flex;flex-direction:column;gap:10px}
.mega-card img{width:100%;height:92px;object-fit:cover;border-radius:10px}
.mega-card h5{margin:0;font-size:16px;color:var(--c-ink)}
.mega-card p{margin:0;font-size:13px;color:#5b6a85;line-height:1.5}
.mega-card .btn{margin-top:auto;text-align:center}

/* 中等屏：Mega 面板内容收为两列，避免挤压 */
@media (max-width:1080px){.mega-inner{grid-template-columns:1fr 1fr}}

/* ===== 产品·方案 超级菜单：全屏 2×2 品牌生态卡片（精简清爽版） ===== */
.mega--eco{padding:0}
.mega--eco .mega-inner{display:block;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.eco-grid{display:grid;grid-template-columns:1fr 1fr;width:100%;position:relative;column-gap:24px;row-gap:18px}
/* 方块之间的灰色间隔线：竖线居中接近全高（上下各留白约 15%），横线居中全长（左右不留白）；
   按实际显示的品牌数量变化（JS 给 .eco-grid 加 eco-grid--N）。颜色浅灰 #cbd5e1，
   并用 scale 把 1px 压到约 0.75px，更细更轻 */
.eco-grid::before,
.eco-grid::after{content:"";position:absolute;pointer-events:none;z-index:1}
/* 竖线：水平居中。默认（4 品牌）上下两行各一条，每条在所属行内上下各留白 15%；细线 scaleX(.75) */
.eco-grid::before{left:50%;top:0;transform:translateX(-50%) scaleX(.75);width:1px;height:100%;
  background:linear-gradient(to bottom,
    transparent 0%, transparent 7.5%, #cbd5e1 7.5%, #cbd5e1 42.5%,
    transparent 42.5%, transparent 57.5%, #cbd5e1 57.5%, #cbd5e1 92.5%,
    transparent 92.5%, transparent 100%)}
/* 横线：垂直居中，左右各留白 10%；细线 scaleY(.75) */
.eco-grid::after{top:50%;left:0;transform:translateY(-50%) scaleY(.75);width:100%;height:1px;
  background:linear-gradient(to right,
    transparent 0%, transparent 10%, #cbd5e1 10%, #cbd5e1 90%,
    transparent 90%, transparent 100%)}
/* 2 个品牌：整高单条竖线（上下各留白 15%），不显示横线 */
.eco-grid--2::before{background:linear-gradient(to bottom,
  transparent 0%, transparent 15%, #cbd5e1 15%, #cbd5e1 85%, transparent 85%, transparent 100%)}
.eco-grid--2::after{display:none}
/* 3 个品牌：仅第一行一条竖线（上下各留白 15%，局部于上排）；横线保留（左右留白 10%） */
.eco-grid--3::before{background:linear-gradient(to bottom,
  transparent 0%, transparent 7.5%, #cbd5e1 7.5%, #cbd5e1 42.5%, transparent 42.5%, transparent 100%)}
/* 1 个品牌：不显示分隔线 */
.eco-grid--1::before,
.eco-grid--1::after{display:none}
.eco-card{padding:20px 24px;border:0}
.eco-brand{display:flex;align-items:center;gap:10px;text-decoration:none;margin-bottom:6px}
.eco-logo{width:34px;height:34px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center}
.eco-logo img{width:100%;height:100%;object-fit:contain}
.eco-brand h2{font-size:16px;color:var(--c-ink);margin:0;font-weight:600;letter-spacing:0}
.eco-desc{color:#6b7689;font-size:12px;line-height:1.6;margin:0 0 14px;max-width:460px}
.func-list{display:flex;flex-wrap:wrap;gap:14px 20px}
.func-item{text-align:center;text-decoration:none;width:74px;display:flex;flex-direction:column;align-items:center}
.func-icon{width:46px;height:46px;border-radius:11px;background:linear-gradient(135deg,#4285F4,#4ECDC4);
  margin:0 auto 6px;display:flex;align-items:center;justify-content:center;overflow:hidden;
  transition:transform .18s,box-shadow .18s}
.func-icon img{width:100%;height:100%;object-fit:cover}
.func-item:hover .func-icon{transform:translateY(-3px);box-shadow:0 12px 24px -10px rgba(15,33,71,.4)}
.func-item p{font-size:11px;color:#344256;line-height:1.25;margin:0}
.func-item:hover p{color:var(--c-primary)}
@media (max-width:1080px){
  .eco-grid{grid-template-columns:1fr}
  .eco-card{padding:18px 20px;border-top:1px solid var(--c-line)}
  .eco-card:first-child{border-top:0}
  .eco-grid::before,
  .eco-grid::after{display:none}
}

/* ---------- Hero 轮播 ---------- */
.hero{position:relative;overflow:hidden;min-height:640px;display:flex;align-items:center;background:#0b1f3a}
/* 轮播 hero 上移贴顶：背景从页面 0 开始，透明导航叠在轮播图上；padding-top 给文案避让顶栏 */
.hero-carousel{margin-top:calc(-1 * var(--header-h));padding-top:var(--header-h)}
.hero-bg{position:absolute;inset:0;z-index:0;background:linear-gradient(135deg,#0b2a5b 0%,#1447a0 55%,#0f766e 100%)}
.hero-bg .pp-track{display:flex;width:100%;height:100%}
.hero-bg .pp-slide{position:relative;flex:0 0 100%;width:100%;height:100%;background-size:cover;background-position:center}
  .hero-bg .pp-slide::after{display:none}
.hero-mask{position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(8,20,40,.18) 0%,rgba(8,20,40,0) 55%)}
.hero-overlay{position:relative;z-index:2;width:100%;align-self:stretch;display:flex;align-items:center;overflow:hidden}
.hero-text-track{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;transition:transform .55s cubic-bezier(.4,0,.2,1)}
.hero-text-slide{flex:0 0 100%;min-width:100%;display:flex;align-items:center;position:relative}

/* 淡入淡出模式（首页 hero 启用）：背景图与文案堆叠显隐，不再横滑 */
.hero-fade .hero-bg .pp-track{display:block;transform:none}
.hero-fade .hero-bg .pp-slide{position:absolute;inset:0;flex:none;width:100%;height:100%;opacity:0;transition:opacity .7s ease;z-index:0}
.hero-fade .hero-bg .pp-slide.active{opacity:1;z-index:1}
.hero-fade .hero-text-track{display:block;transform:none}
.hero-fade .hero-text-slide{position:absolute;inset:0;display:flex;align-items:center;opacity:0;transition:opacity .7s ease;pointer-events:none}
.hero-fade .hero-text-slide.active{opacity:1;pointer-events:auto}
@media (prefers-reduced-motion: reduce){.hero-fade .hero-bg .pp-slide,.hero-fade .hero-text-slide{transition-duration:.2s}}
.hero-content{max-width:680px;color:#fff;padding:60px 0;margin-left:60px}
.hero-carousel .eyebrow{display:inline-block;color:#fff;font-size:14px;font-weight:700;letter-spacing:.1em;padding:7px 16px;border-radius:999px;background:linear-gradient(90deg,#2563eb,#12b5c9)}
.hero-carousel .hero-content h1{color:#fff;font-size:46px;margin:18px 0 18px}
.hero-carousel .hero-content h1 .hl{background:linear-gradient(90deg,#7fd5e6,#aab8ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-carousel .hero-content p.lead{color:rgba(255,255,255,.92);margin:0 0 28px}
.hero-carousel .hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-carousel .hero-actions .btn-ghost{color:#fff;border-color:#fff;background:rgba(255,255,255,.12)}
.hero-carousel .hero-actions .btn-ghost:hover{color:#000;border-color:rgba(255,255,255,.65);background:#fff}
.hero-carousel .hero-badges{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.hero-carousel .hero-badges span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;color:#fff;box-shadow:none;backdrop-filter:blur(4px)}
.hero-progress{position:absolute;left:60px;bottom:1px;display:flex;gap:6px;z-index:3}
.hero-progress .hp-line{position:relative;overflow:hidden;width:138px;height:2px;border-radius:999px;background:rgba(255,255,255,.28);cursor:pointer}
.hero-progress .hp-line .fill{position:absolute;left:0;top:0;bottom:0;right:0;background:#fff;border-radius:999px;transform:scaleX(0);transform-origin:right center}
.hero-metrics{background:#fff;padding:0}
.hero-metrics .metrics{margin-top:0;padding:44px 0 38px}
/* 旧 hero 卡片样式保留（其他场景可能引用） */
.hero-visual{position:relative}
.hero-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:16px}
.hero-card .hc-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.hero-card .hc-top small{color:var(--c-muted);font-size:13px}
.dot{width:8px;height:8px;border-radius:50%;background:#22c55e;display:inline-block;margin-right:6px}
.spark{width:100%;height:60px}

/* ---------- 数据条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:56px}
.metric{background:#fff;border-radius:var(--radius-sm);padding:22px 20px}
.metric .num{font-size:30px;font-weight:800;color:var(--c-ink)}
.metric .num .cur{font-size:18px;color:var(--c-primary);margin-right:2px}
.metric .label{color:var(--c-muted);font-size:14px;margin-top:2px}
.metric .up{color:#16a34a;font-size:13px;font-weight:600;margin-top:6px}

/* ---------- 通用卡片网格 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}

.card, .cap-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:26px;transition:.2s;box-shadow:var(--shadow-soft)}
.card:hover, .cap-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(37,99,235,.35)}
.card .ic, .cap-card .ic{width:48px;height:48px;border-radius:12px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.card h3, .cap-card h3{margin-bottom:8px}
.card p, .cap-card p{font-size:15px;color:var(--c-body)}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.tags span{font-size:12px;font-weight:600;color:var(--c-primary);background:var(--c-soft);border-radius:999px;padding:4px 10px}

/* ---------- 区块标题带细线 ---------- */
.sec-line{width:46px;height:4px;border-radius:4px;background:var(--grad);margin:0 auto 18px}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:stretch}
.about-grid img, .about-intro img{border-radius:var(--radius);box-shadow:var(--shadow)}
.about-intro p{color:var(--c-body);line-height:1.85}
.about-intro p.lede{margin:14px 0}
.stats-row, .stat-block-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:22px}
.about-stats{margin-top:36px;max-width:100%}
.about-stats .stat-block{padding:30px 18px 26px}
.stat, .stat-block{text-align:center;padding:18px 10px;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-sm)}
.stat .n, .stat-block .n{font-size:32px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .t, .stat-block .t{font-size:13px;color:var(--c-muted);margin-top:4px}

/* ---------- 步骤路径 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.step{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:26px 22px}
.step .no{font-size:14px;font-weight:800;color:#fff;background:var(--grad);width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.step h3{font-size:18px}
.step p{font-size:14px}

/* ---------- 优势 ---------- */
.adv{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:24px;transition:.2s}
.adv:hover{box-shadow:var(--shadow)}
.adv .no{font-size:24px;font-weight:800;color:transparent;background:var(--grad);-webkit-background-clip:text;background-clip:text}
.adv h3{font-size:18px}
.adv p{font-size:14px}

/* ---------- 文章卡 ---------- */
.post{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;transition:.2s;box-shadow:var(--shadow-soft)}
.post:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.post .thumb{height:150px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:700;letter-spacing:.05em}
.post .body{padding:20px}
.post .cat{font-size:12px;font-weight:700;color:var(--c-cyan);letter-spacing:.08em;text-transform:uppercase}
.post h3{font-size:17px;margin:8px 0 10px;line-height:1.4}
.post p{font-size:14px;color:var(--c-body)}

/* ---------- CTA ---------- */
.cta, .section-cta{background:var(--grad);border-radius:28px;padding:46px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta h2, .section-cta h2{color:#fff}
.cta p, .section-cta p{color:rgba(255,255,255,.9);max-width:560px;margin:0 auto 26px;font-size:17px}
.cta .btn-white, .section-cta .btn-white{background:#fff;color:var(--c-primary)}
.cta .btn-white:hover, .section-cta .btn-white:hover{transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{background:#0c1838;color:#c7d0e6;padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.2fr 0.8fr 0.8fr 1.7fr;gap:28px}
.site-footer .logo-white{height:34px;margin-bottom:16px}
.site-footer p{font-size:14px;color:#9fb0d4;max-width:300px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.site-footer ul{list-style:none}
.site-footer ul li{margin-bottom:10px;font-size:14px}
.site-footer ul li a:hover{color:#fff}
.footer-qr-row{display:flex;gap:50px;margin-top:18px}
.footer-qr-row .qr-item{display:flex;flex-direction:column;align-items:center;gap:6px}
.footer-qr-row a.qr-link{text-decoration:none;display:inline-block}
.footer-qr-row a.qr-link:hover .qr-item img{transform:translateY(-2px)}
.footer-qr-row .qr-item img{width:92px;height:92px;object-fit:contain;box-shadow:0 4px 12px rgba(0,0,0,.15)}
.footer-qr-row .qr-item span{font-size:12px;color:#9fb0d4}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;font-size:13px;color:#7e8db3;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer-icp{color:#7e8db3;text-decoration:none;white-space:nowrap;transition:color .2s}
.footer-icp:hover{color:#fff}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.info-list{list-style:none}
.info-list li{padding:16px 0;border-bottom:1px solid var(--c-line);display:flex;gap:14px;align-items:flex-start}
.info-list .ic{width:40px;height:40px;border-radius:10px;background:var(--c-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.info-list strong{display:block;color:var(--c-ink);font-size:15px}
.info-list span{font-size:14px;color:var(--c-body)}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-soft)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1.5px solid var(--c-line);border-radius:10px;font-size:15px;font-family:inherit;color:var(--c-ink);background:#fff;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.field .req{color:#ef4444}
.field .opt{color:#9aa6bd;font-size:12px;font-weight:400}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.err{color:#ef4444;font-size:13px;margin-top:5px;display:none}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#ef4444}
.field.invalid .err{display:block}
.form-success{display:none;background:#ecfdf5;color:#047857;border:1px solid #a7f3d0;padding:14px 16px;border-radius:10px;margin-bottom:16px;font-size:14px}
/* 荣誉资质 */
.honors-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:18px}
.honor-card{background:#fff;border:1px solid #e6ecf5;border-radius:14px;overflow:hidden;box-shadow:0 6px 20px rgba(15,33,71,.04)}
.honor-card .thumb{aspect-ratio:4/3;overflow:hidden;background:#eef2f7}
.honor-card .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.honor-card .body{padding:14px 16px}
.honor-card .body h3{font-size:15px;color:#0f2147;margin:0 0 4px}
.honor-card .body p{margin:0;color:#54607a;font-size:13px;line-height:1.6}
/* 产品卡片（图片版） */
.prod-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;transition:.2s;box-shadow:var(--shadow-soft)}
.prod-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(37,99,235,.35)}
.prod-card .thumb{height:170px;background:var(--grad);overflow:hidden}
.prod-card .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.prod-card .body{padding:22px 24px}
.prod-card .body h3{margin:0 0 10px;font-size:18px;color:var(--c-ink)}
.prod-card .body p{margin:0;color:var(--c-body);font-size:14px;line-height:1.7}
/* 案例卡片 */
.case-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;transition:.2s;box-shadow:var(--shadow-soft);cursor:pointer}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(37,99,235,.35)}
.case-card .thumb{height:150px;overflow:hidden;background:#eef2f7}
.case-card .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.case-card .body{padding:18px 20px}
.case-card .case-tags{display:flex;flex-wrap:nowrap;gap:10px;overflow:hidden;height:26px;align-items:center;margin-bottom:10px}
.case-card .case-tag{display:inline-block;background:rgba(37,99,235,.1);color:var(--c-primary);font-size:12px;font-weight:600;line-height:1;padding:5px 11px;border-radius:999px;white-space:nowrap;flex:0 0 auto}
.case-card .body h3{margin:0 0 8px;font-size:17px;color:var(--c-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.case-card .body p{margin:0 0 12px;color:var(--c-body);font-size:14px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.case-card .more{color:var(--c-primary);font-weight:600;font-size:14px}
/* 首页案例客户图片墙：默认静态网格 */
.cases-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:8px}
.cases-wall .cw-item{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;cursor:pointer;transition:.2s;box-shadow:var(--shadow-soft);width:160px;flex:0 0 auto}
.cases-wall .cw-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(37,99,235,.35)}
.cases-wall .cw-item img{width:100%;height:100%;object-fit:cover;display:block}
.cases-wall .empty-group{width:100%;text-align:center;color:var(--c-body);padding:28px 0;font-size:14px}
/* 首页案例墙轮播版：保持原本的网格样式，整组复制一份并排，整体横向滚动，实现最后一张接第一张的无缝循环 */
.cases-marquee{display:block;overflow:hidden;margin-top:8px;position:relative}
.cases-marquee .cases-wall-track{display:flex;width:max-content;animation:wallScroll 45s linear infinite;will-change:transform}
.cases-marquee .cases-wall-track:hover{animation-play-state:paused}
.cases-marquee .cases-wall-track .cases-wall{display:flex;flex-wrap:wrap;justify-content:flex-start;gap:14px;width:calc(100vw - 40px);max-width:1160px;flex:0 0 auto;margin-top:0}
@keyframes wallScroll{from{transform:translate3d(0,0,0)}to{transform:translate3d(-50%,0,0)}}
@media (prefers-reduced-motion: reduce){
  .cases-marquee .cases-wall-track{animation-duration:0.001ms !important;animation-iteration-count:1 !important}
}

/* 标题内联小链接（如"案例客户 点击查看全部 →"） */
.sec-title-row{display:inline-flex;align-items:baseline;gap:14px;flex-wrap:wrap;justify-content:center}
.sec-inline-link{font-size:15px;font-weight:500;color:var(--c-body);letter-spacing:0;
  display:inline-flex;align-items:center;gap:4px;transition:color .2s;white-space:nowrap}
.sec-inline-link:hover{color:var(--c-primary)}
.sec-inline-link .arrow{display:inline-block;transition:transform .25s}
.sec-inline-link:hover .arrow{transform:translateX(4px)}

/* 案例详情弹窗 */
.modal-case{position:fixed;inset:0;background:rgba(15,33,71,.55);display:none;align-items:center;justify-content:center;z-index:1200;padding:20px}
.modal-case.show{display:flex}
.modal-case-box{background:#fff;border-radius:20px;max-width:680px;width:100%;max-height:88vh;overflow:auto;position:relative;box-shadow:0 30px 80px rgba(10,20,50,.35)}
.modal-close{position:absolute;top:12px;right:14px;width:34px;height:34px;border:none;background:rgba(255,255,255,.9);border-radius:50%;font-size:22px;line-height:1;cursor:pointer;color:#0f2147;z-index:2}
.modal-case-media{height:260px;background:#eef2f7;overflow:hidden}
.modal-case-media img{width:100%;height:100%;object-fit:cover;display:block}
.modal-case-body{padding:26px 30px 32px}
.modal-case-body h2{margin:12px 0 14px;font-size:24px;color:var(--c-ink)}
.modal-case-body .lead{color:var(--c-body);font-size:15px;line-height:1.8;margin:0 0 16px}
.modal-case-body .detail{color:#33405c;font-size:14px;line-height:1.9;margin:0 0 22px}
/* 案例详情轮播 */
.cm-carousel{position:relative;height:100%;overflow:hidden}
.cm-track{display:flex;height:100%;width:100%;transition:transform .45s ease}
.cm-slide{flex:0 0 100%;height:100%}
.cm-slide img{width:100%;height:100%;object-fit:cover;display:block}
.cm-nav{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border:none;border-radius:50%;background:rgba(15,33,71,.45);color:#fff;font-size:24px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}
.cm-nav:hover{background:rgba(15,33,71,.72)}
.cm-prev{left:12px}
.cm-next{right:12px}
.cm-dots{position:absolute;bottom:12px;left:0;right:0;display:flex;gap:8px;justify-content:center;z-index:2}
.cm-dot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.55);cursor:pointer;transition:background .2s,transform .2s}
.cm-dot.active{background:#fff;transform:scale(1.25)}
@media(max-width:720px){.modal-case-media{height:180px}}
.form-success.show{display:block}

/* ---------- 面包屑/子页头 ---------- */
.page-hero{background:var(--c-soft);padding:64px 0 48px;text-align:center}
.page-hero h1{font-size:40px;margin:14px 0 10px}
.page-hero p{color:var(--c-body);max-width:640px;margin:0 auto}

/* ---------- 发展历程时间轴（PC 交替错位 / 移动单列） ---------- */
.timeline{position:relative;max-width:var(--maxw);margin:0 auto;padding:12px 0}
.timeline::before{content:"";position:absolute;left:50%;top:16px;bottom:16px;width:2px;background:var(--grad-axis);transform:translateX(-50%);border-radius:2px;opacity:.7}
.timeline-item{position:relative;width:50%;padding:0 38px 22px;box-sizing:border-box}
.timeline-item:nth-child(odd){left:0}
.timeline-item:nth-child(even){left:50%}
.timeline-dot{position:absolute;top:6px;width:20px;height:20px;border-radius:50%;background:var(--grad-axis);border:4px solid #fff;box-shadow:0 4px 12px rgba(37,99,235,.25);z-index:1;transition:transform .25s,box-shadow .25s}
.timeline-item:nth-child(odd) .timeline-dot{right:-10px}
.timeline-item:nth-child(even) .timeline-dot{left:-10px}
.timeline-item:hover .timeline-dot{transform:scale(1.25);box-shadow:0 6px 18px rgba(37,99,235,.4)}
.timeline-content{display:block}
.timeline-year{font-size:22px;font-weight:800;color:var(--c-primary);letter-spacing:.02em;line-height:1;margin-bottom:8px}
.timeline-year::after{content:"";display:inline-block;width:26px;height:2px;background:var(--grad-axis);opacity:.5;border-radius:2px;margin-left:10px;vertical-align:middle}
.timeline-item:nth-child(odd) .timeline-year{text-align:right}
.timeline-item:nth-child(odd) .timeline-year::after{display:none}
.timeline-body{background:#fff;border:1px solid var(--c-line);border-radius:12px;padding:15px 18px;box-shadow:0 4px 14px rgba(15,23,42,.04);position:relative;transition:transform .25s,box-shadow .25s,border-color .25s}
.timeline-item:hover .timeline-body{transform:translateY(-3px);box-shadow:0 10px 24px rgba(15,23,42,.08);border-color:rgba(37,99,235,.25)}
.timeline-body h3{font-size:18px;font-weight:700;color:var(--c-primary);margin:0 0 6px;letter-spacing:.01em}
.timeline-body p{margin:0;color:var(--c-body);font-size:14.5px;line-height:1.85}
.timeline-item--current .timeline-body{border-color:rgba(37,99,235,.35);box-shadow:0 8px 24px rgba(37,99,235,.10);background:linear-gradient(180deg,#fbfdff 0%,#fff 100%)}
.timeline-item--current .timeline-dot{width:24px;height:24px;top:4px}
.timeline-item--current:nth-child(odd) .timeline-dot{right:-12px}
.timeline-item--current:nth-child(even) .timeline-dot{left:-12px}
.timeline-tag{display:inline-block;margin-top:10px;padding:3px 10px;font-size:11px;font-weight:700;color:var(--c-primary);background:rgba(37,99,235,.08);border:1px solid rgba(37,99,235,.18);border-radius:999px;letter-spacing:.08em;text-transform:uppercase}

/* ---------- 使命 · 愿景 双卡 ---------- */
.mv-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:var(--maxw);margin:0 auto}
.mv-card{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:28px 30px;box-shadow:var(--shadow-soft);overflow:hidden;transition:.25s}
.mv-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.mv-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad)}
.mv-card .mv-icon{width:54px;height:54px;border-radius:14px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:18px;box-shadow:0 10px 22px rgba(37,99,235,.25)}
.mv-card .mv-icon svg{width:28px;height:28px}
.mv-card .mv-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-primary);background:rgba(37,99,235,.08);padding:5px 12px;border-radius:999px;margin-bottom:14px}
.mv-card h3{font-size:24px;font-weight:800;color:var(--c-ink);margin:0 0 12px;letter-spacing:.01em}
.mv-card p{margin:0;color:var(--c-body);font-size:15.5px;line-height:1.9}

/* ---------- 3S 服务战略 三卡 ---------- */
.three-s-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.three-s-card, .strategy-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:24px 22px;transition:.25s;box-shadow:var(--shadow-soft);position:relative;overflow:hidden}
.three-s-card:hover, .strategy-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(37,99,235,.35)}
.three-s-card::after, .strategy-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.three-s-card:hover::after, .strategy-card:hover::after{transform:scaleX(1)}
.three-s-card .three-s-badge, .strategy-card .three-s-badge{width:56px;height:56px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;letter-spacing:.02em;margin-bottom:16px;box-shadow:0 10px 22px rgba(37,99,235,.28)}
.three-s-card h3, .strategy-card h3{font-size:18px;font-weight:700;color:var(--c-ink);margin:0 0 10px;display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}
.three-s-card h3 .en, .strategy-card h3 .en{font-size:13px;font-weight:600;color:var(--c-cyan);letter-spacing:.06em;text-transform:uppercase}
.three-s-card p, .strategy-card p{margin:0;color:var(--c-body);font-size:14.5px;line-height:1.85}

/* ---------- 核心价值观 三卡 ---------- */
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.value-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:24px 22px;transition:.25s;box-shadow:var(--shadow-soft)}
.value-card:hover{box-shadow:var(--shadow)}
.value-card .value-badge{width:48px;height:48px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;margin-bottom:16px;letter-spacing:.02em;box-shadow:0 8px 18px rgba(37,99,235,.22)}
.value-card h3{font-size:18px;font-weight:700;color:var(--c-ink);margin:0 0 10px}
.value-card p{margin:0;color:var(--c-body);font-size:14.5px;line-height:1.85}

/* =========================================================
   组件层增强（About 重构：设计 Token 驱动）
   ========================================================= */

/* ---------- About Hero（渐变背景 + 视觉锚点） ---------- */
.about-hero{position:relative;overflow:hidden;text-align:center;
  background:
    radial-gradient(820px 430px at 86% -25%,rgba(18,181,201,.18),transparent 60%),
    radial-gradient(720px 430px at 6% 0%,rgba(37,99,235,.15),transparent 55%),
    var(--c-soft);
  padding:60px 0 36px}
.about-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-line) 28%,var(--c-line) 72%,transparent)}
.about-hero .eyebrow{margin-bottom:14px}
.about-hero h1{font-size:42px;margin:14px 0 12px}
.about-hero p{color:var(--c-body);max-width:660px;margin:0 auto;font-size:17px}

/* ---------- 数据统计（强化数字/标签层级） ---------- */
.stat-block{position:relative;display:flex;flex-direction:column;justify-content:flex-start;
  text-align:center;padding:24px 14px 22px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--radius-sm);box-shadow:var(--shadow-1);transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.stat-block:hover{transform:translateY(-6px);box-shadow:var(--shadow-2)}
.stat-block .num{font-size:40px;font-weight:800;line-height:1.1;min-height:44px;display:flex;align-items:center;justify-content:center;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-feature-settings:"tnum"}
.stat-block .num .suffix{font-size:22px;font-weight:800;margin-left:2px}
.stat-block .label{font-size:13px;color:var(--c-muted);margin-top:10px;letter-spacing:.02em;min-height:18px;line-height:1.4}

/* ---------- 图片宽高比约束（防 CLS） ---------- */
.media-frame{position:relative;height:100%;min-height:340px;overflow:hidden;border-radius:var(--radius);box-shadow:var(--shadow);background:var(--c-soft)}
.media-frame img{width:100%;height:100%;object-fit:cover;object-position:center 30%;display:block}

/* ---------- 滚动渐入（Intersection Observer 驱动，CSS 过渡；无 JS 时不过度隐藏） ---------- */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}

/* ---------- 焦点可见（A11Y） ---------- */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,
.nav-link:focus-visible,.menu-toggle:focus-visible,.btn:focus-visible,.timeline-item:focus-visible{
  outline:3px solid rgba(37,99,235,.45);outline-offset:3px;border-radius:8px}

/* ---------- 卡片 hover 微交互渲染提示 ---------- */
.cap-card,.strategy-card,.value-card,.mv-card,.prod-card,.case-card,.post,.adv,.timeline-body{will-change:transform}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero-grid,.about-grid,.about-intro,.contact-grid{grid-template-columns:1fr;gap:32px}
  .grid-4,.steps{grid-template-columns:repeat(2,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .stats-row,.stat-block-wrap{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  h2{font-size:28px}
  .hero h1{font-size:36px}
  .hero-carousel .hero-content h1{font-size:36px}
  /* 时间轴：平板起转单列（左轴） */
  .timeline::before{left:18px;transform:none}
  .timeline-item{width:100%;left:0 !important;padding:0 0 26px 52px}
  .timeline-item:nth-child(odd),.timeline-item:nth-child(even){text-align:left}
  .timeline-dot,.timeline-item--current .timeline-dot{left:8px !important;right:auto !important;top:4px}
  .timeline-year{text-align:left;margin-bottom:8px}
  .timeline-year::after{display:none}
  .timeline-body{display:block}
}
@media(max-width:720px){
  .nav-links{position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--c-line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 0;display:none}
  .nav-links.open{display:flex}
  .nav-item{width:100%}
  .nav-link{padding:13px 24px;width:100%;height:auto;justify-content:space-between}
  .nav-link::after{display:none}
  .nav-cta{margin:8px 24px 12px}
  .mega{display:none !important}
  .menu-toggle{display:block}
  .grid-2,.grid-3,.grid-4,.metrics,.steps,.stats-row,.stat-block-wrap,.about-intro,.footer-grid,.form-row{grid-template-columns:1fr}
  .media-frame{height:auto;aspect-ratio:4/3;min-height:0}
  .mv-grid,.three-s-grid,.values-grid{grid-template-columns:1fr;gap:16px}
  .mv-card{padding:28px 24px}
  .mv-card h3{font-size:21px}
  .three-s-card,.value-card{padding:24px 22px}
  .timeline{padding:6px 0 6px 46px}
  .timeline-year{font-size:17px}
  .timeline-body{padding:14px 16px;border-radius:10px}
  .timeline-item{padding-bottom:22px}
  .timeline-body h3{font-size:16px}
  .timeline-body p{font-size:13.5px;line-height:1.75}
  section{padding:48px 0}
  .hero{min-height:500px;padding:0}
  .hero-carousel .hero-content h1{font-size:28px}
  .hero-content{padding:40px 0;margin-left:30px}
  .hero-progress{left:30px;bottom:6px}
  .hero-carousel .hero-badges span{font-size:12px;padding:6px 11px}
}

/* ---------- 动效降级（无障碍 / 弱网） ---------- */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1 !important;transform:none !important}
  .cap-card,.strategy-card,.value-card,.mv-card,.prod-card,.case-card,.post,.adv,.timeline-body{will-change:auto}
}

/* =========================================================
   产品体系（品牌总览 hub / 品牌子页 / 产品详情）
   复用 --c-* token 与设计系统；品牌强调色通过 body 上的
   .brand-<slug> 类切换 --accent / --accent2 / --accent-soft
   ========================================================= */

/* ---- 品牌强调色（每个 slug 一套） ---- */
.brand-lemeng  {--accent:#16a34a; --accent2:#3ddc84; --accent-soft:#e9f8ef; --accent-sh:rgba(22,163,74,.20);}
.brand-dingjian{--accent:#ef8a12; --accent2:#fbc042; --accent-soft:#fff5e3; --accent-sh:rgba(239,138,18,.20);}
.brand-shangmi {--accent:#2563eb; --accent2:#5aa0ff; --accent-soft:#eaf1fe; --accent-sh:rgba(37,99,235,.20);}
.brand-hanshow {--accent:#7c3aed; --accent2:#a875f9; --accent-soft:#f2ecfe; --accent-sh:rgba(124,58,237,.20);}
/* 总览页多卡共存：各卡自带色（一页多色更鲜活） */
.h-lemeng  {--accent:#16a34a; --accent2:#3ddc84; --accent-soft:#e9f8ef; --accent-sh:rgba(22,163,74,.20);}
.h-dingjian{--accent:#ef8a12; --accent2:#fbc042; --accent-soft:#fff5e3; --accent-sh:rgba(239,138,18,.20);}
.h-shangmi {--accent:#2563eb; --accent2:#5aa0ff; --accent-soft:#eaf1fe; --accent-sh:rgba(37,99,235,.20);}
.h-hanshow {--accent:#7c3aed; --accent2:#a875f9; --accent-soft:#f2ecfe; --accent-sh:rgba(124,58,237,.20);}

/* ---- 总览 hub：品牌大卡 ---- */
.hub-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:8px}
.hub-card{position:relative;display:flex;gap:20px;align-items:flex-start;background:var(--c-card);
  border:1px solid var(--c-line);border-radius:var(--radius-lg);padding:28px 28px 26px;overflow:hidden;
  box-shadow:var(--shadow-soft);transition:transform .28s var(--ease),box-shadow .28s, border-color .28s}
.hub-card::after{content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,var(--accent-soft),transparent 58%);opacity:0;transition:opacity .28s}
.hub-card:hover{transform:translateY(-6px);box-shadow:0 24px 56px var(--accent-sh);
  border-color:color-mix(in srgb,var(--accent) 38%,var(--c-line))}
.hub-card:hover::after{opacity:1}
.hub-ic{width:64px;height:64px;border-radius:18px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:transparent;color:var(--accent);font-weight:800;font-size:24px;
  box-shadow:none;transition:transform .28s}
.hub-card:hover .hub-ic{transform:scale(1.06) rotate(-4deg)}
.hub-ic img{width:100%;height:100%;object-fit:contain}
.hub-main{position:relative;z-index:1;display:flex;flex-direction:column;flex:1}
.hub-main h3{margin:2px 0 8px;font-size:21px;font-weight:800;color:var(--c-ink);letter-spacing:-.01em}
.hub-main p{margin:0;color:var(--c-body);font-size:14.5px;line-height:1.7}
.hub-tags{display:flex;flex-wrap:wrap;gap:18px 26px;margin-top:18px}
.hub-tag{display:flex;flex-direction:column;align-items:center;gap:8px;font-size:13px;color:var(--accent);font-weight:600;text-align:center;background:none;border-radius:0;padding:0;min-width:0}
.hub-tag-ic{width:88px;height:88px;border-radius:24px;object-fit:contain;flex:0 0 auto}
.hub-card .more{position:relative;z-index:1;margin-top:18px;color:#fff;background:var(--accent);font-weight:700;font-size:14.5px;
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:8px 18px;border-radius:999px;box-shadow:0 10px 22px -10px var(--accent-sh);transition:transform .22s,box-shadow .22s}
.hub-card .more .ar{transition:transform .28s}
.hub-card:hover .more{transform:translateY(-2px);box-shadow:0 14px 26px -10px var(--accent-sh)}
.hub-card:hover .more .ar{transform:translateX(5px)}

/* ---- 品牌子页：左侧分类导航 + 右侧内容 ---- */
.brand-layout{display:grid;grid-template-columns:248px 1fr;gap:42px;align-items:start;margin-top:6px}
.brand-cats{position:sticky;top:calc(var(--header-h) + 18px);align-self:start;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius-md);
  padding:18px 14px;box-shadow:var(--shadow-soft)}
.bc-title{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--c-muted);
  text-transform:uppercase;padding:2px 10px 12px;margin-bottom:6px;border-bottom:1px solid var(--c-line)}
.bc-link{display:flex;align-items:center;gap:11px;padding:11px 12px;border-radius:12px;
  color:var(--c-ink);text-decoration:none;font-weight:600;font-size:14.5px;transition:.2s;line-height:1.3}
.bc-link:hover{background:var(--accent-soft);color:var(--accent)}
.bc-link.active{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;
  box-shadow:0 10px 24px var(--accent-sh)}
.bc-ic{width:26px;height:26px;border-radius:8px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);overflow:hidden}
.bc-ic.has-logo{background:none}
.bc-link.active .bc-ic{background:rgba(255,255,255,.22)}
.bc-ic img{width:80%;height:80%;object-fit:contain}
.bc-name{flex:1 1 auto}

/* ---- 品牌子页：分类分组（模块） ---- */
.pp-module{margin-bottom:44px;text-align:left;scroll-margin-top:calc(var(--header-h) + 16px)}
.pp-module:last-child{margin-bottom:0}
.pp-module-head{display:flex;align-items:center;gap:14px;margin-bottom:20px;padding-bottom:14px;
  border-bottom:1px solid var(--c-line);flex-wrap:wrap}
.pp-module-no{width:44px;height:44px;border-radius:13px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-weight:800;font-size:18px;overflow:hidden;
  box-shadow:0 8px 18px var(--accent-sh)}
.pp-module-no.has-logo{background:none;box-shadow:none}
.pp-module-no.has-logo img{width:100%;height:100%;object-fit:contain}
.pp-module-no img{width:72%;height:72%;object-fit:contain}
.pp-module-title{flex:1 1 auto;min-width:0}
.pp-module-head h3{margin:0;font-size:20px;font-weight:800;color:var(--c-ink);letter-spacing:-.01em}
.pp-module-head .pp-module-sub{color:var(--c-muted);font-size:13px;font-weight:500;margin-top:2px}
.pp-count{margin-left:auto;flex:0 0 auto;align-self:flex-start;font-size:12.5px;font-weight:700;color:var(--accent);
  background:var(--accent-soft);border-radius:999px;padding:5px 13px;white-space:nowrap}

.pp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.pp-item{display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-line);
  border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-soft);text-decoration:none;
  transition:transform .25s,box-shadow .25s,border-color .25s}
.pp-item:hover{transform:translateY(-4px);box-shadow:0 18px 44px var(--accent-sh);
  border-color:color-mix(in srgb,var(--accent) 38%,var(--c-line))}
.pp-media{aspect-ratio:16/10;background:linear-gradient(135deg,var(--accent-soft),#f8fafc);
  display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.pp-media img{width:100%;height:100%;object-fit:cover}
.pp-media-ph{color:var(--accent);opacity:.55}
.pp-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.pp-tag{flex:0 0 auto;white-space:nowrap;font-size:12px;font-weight:700;color:var(--accent);
  background:var(--accent-soft);border-radius:999px;padding:4px 11px}
.pp-tags{display:flex;gap:6px;flex-wrap:wrap}
.pp-ptag{font-size:11.5px;color:var(--c-body);background:#f1f5fb;border:1px solid var(--c-line);
  border-radius:999px;padding:3px 9px;line-height:1.4}
.pp-title-row{display:flex;align-items:center;gap:10px}
.pp-title-row .t{flex:1 1 auto;min-width:0}
.pp-item .t{font-weight:800;color:var(--c-ink);font-size:17px;line-height:1.35;letter-spacing:-.01em}
.pp-item .d{color:var(--c-muted);font-size:13.5px;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pp-more{margin-top:auto;padding-top:8px;font-size:13.5px;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:5px}
.pp-more::after{content:">";font-size:12px;font-weight:800}
.pp-item:hover .pp-more{color:var(--accent2)}

/* ---- 产品详情页 ---- */
.pd-hero{position:relative;overflow:hidden;text-align:left;padding:54px 0 40px;
  background:linear-gradient(180deg,#fff,var(--c-soft));border-bottom:1px solid var(--c-line)}
.pd-hero::before{content:"";position:absolute;width:300px;height:300px;border-radius:50%;filter:blur(60px);
  background:var(--accent);opacity:.12;top:-120px;right:-30px;pointer-events:none}
.pd-hero .container{position:relative;z-index:1}
.pd-back{display:inline-block;font-size:13px;color:var(--accent);text-decoration:none;font-weight:600;margin-bottom:18px}
.pd-back:hover{text-decoration:underline}
.pd-hero .eyebrow{display:inline-block;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);font-weight:700;margin:0 0 12px;padding:5px 13px;border-radius:999px;background:var(--accent-soft)}
.pd-hero h1{font-size:clamp(28px,3.6vw,42px);font-weight:800;color:var(--c-ink);margin:0 0 12px;letter-spacing:-.02em}
.pd-hero p{font-size:16px;color:var(--c-body);max-width:620px;margin:0;line-height:1.7}
.pd-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.pd-tag{font-size:12.5px;color:var(--c-body);background:#fff;border:1px solid var(--c-line);border-radius:999px;padding:5px 13px}
.pd-body{padding:48px 0 64px}
.pd-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:start}
.pd-media{position:sticky;top:calc(var(--header-h) + 20px);align-self:start}
.pd-media .pd-ph{aspect-ratio:4/3;border-radius:var(--radius);background:linear-gradient(135deg,#eef4ff,#f1fbfc);
  border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;color:var(--c-muted);font-size:14px;overflow:hidden}
.pd-media .pd-ph img{width:100%;height:100%;object-fit:cover}
.pd-thumbs{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.pd-thumb{width:74px;height:74px;border-radius:12px;overflow:hidden;padding:0;border:2px solid transparent;background:#fff;cursor:pointer;
  box-shadow:var(--shadow-soft);transition:border-color .2s,transform .2s}
.pd-thumb img{width:100%;height:100%;object-fit:cover}
.pd-thumb:hover{transform:translateY(-2px)}
.pd-thumb.on{border-color:var(--accent)}

/* ---- 产品图片轮播（列表卡片 + 详情页，3s 自动切换）---- */
.pp-carousel{position:absolute;inset:0;width:100%;height:100%}
.pp-track{display:flex;height:100%;width:100%;transition:transform .55s cubic-bezier(.4,0,.2,1)}
.pp-slide{flex:0 0 100%;width:100%;height:100%;position:relative}
.pp-slide img{width:100%;height:100%;object-fit:cover;display:block}
.pp-dots{position:absolute;left:0;right:0;bottom:10px;display:flex;justify-content:center;gap:7px;pointer-events:none;z-index:2}
.pp-dot{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.55);transition:.25s}
.pp-dot.active{background:#fff;width:18px;border-radius:4px}

.pd-carousel{position:relative;width:100%;border-radius:var(--radius);overflow:hidden;border:1px solid var(--c-line);background:linear-gradient(135deg,#eef4ff,#f1fbfc)}
.pd-carousel .pd-track{display:flex;width:100%;transition:transform .55s cubic-bezier(.4,0,.2,1)}
.pd-slide{flex:0 0 100%;width:100%;position:relative;aspect-ratio:4/3;background:linear-gradient(135deg,#eef4ff,#f1fbfc)}
.pd-slide img{width:100%;height:100%;object-fit:cover;display:block}
.pd-info h2{font-size:20px;font-weight:800;color:var(--c-ink);margin:0 0 14px;padding-bottom:10px;border-bottom:1px solid var(--c-line)}
.pd-info h2:not(:first-child){margin-top:30px}
.pd-info p{font-size:15px;color:var(--c-body);line-height:1.8;margin:0 0 14px}
.pd-related h3{font-size:18px;font-weight:800;color:var(--c-ink);margin:0 0 16px}
.pd-related .pp-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
/* 产品富文本详情（后台「产品详情」富文本渲染区） */
.pd-info .pd-detail{font-size:15px;line-height:1.85;color:var(--c-body);}
.pd-info .pd-detail:first-child,.pd-info .pd-detail>:first-child{margin-top:0}
.pd-info .pd-detail h2{font-size:20px;font-weight:800;color:var(--c-ink);margin:20px 0 10px;padding-bottom:0;border-bottom:none}
.pd-info .pd-detail h3{font-size:17px;font-weight:700;color:var(--c-ink);margin:16px 0 8px}
.pd-info .pd-detail h4{font-size:15.5px;font-weight:700;color:var(--c-ink);margin:14px 0 8px}
.pd-info .pd-detail p{margin:0 0 12px}
.pd-info .pd-detail ul,.pd-info .pd-detail ol{margin:0 0 12px;padding-left:22px}
.pd-info .pd-detail li{margin:5px 0}
.pd-info .pd-detail a{color:var(--accent);text-decoration:underline}
.pd-info .pd-detail img{max-width:100%;height:auto;border-radius:12px;margin:8px 0}
.pd-info .pd-detail blockquote{margin:12px 0;padding:10px 16px;border-left:3px solid var(--accent);background:#f7faff;color:var(--c-body);border-radius:8px}
.pd-info .pd-detail hr{border:none;border-top:1px solid #e6ecf5;margin:18px 0}
.pd-info .pd-detail h1{font-size:23px;font-weight:800;color:var(--c-ink);margin:22px 0 12px}
.pd-info .pd-detail h5,.pd-info .pd-detail h6{font-weight:700;color:var(--c-ink);margin:12px 0 6px}
.pd-info .pd-detail h5{font-size:14.5px}
.pd-info .pd-detail h6{font-size:13.5px}
.pd-info .pd-detail s{color:#9aa7bd}
.pd-info .pd-detail sub,.pd-info .pd-detail sup{font-size:.75em}
.pd-info .pd-detail code{font-family:Consolas,Menlo,monospace;background:#eef2f8;color:#c0392b;padding:2px 6px;border-radius:5px;font-size:.92em}
.pd-info .pd-detail pre{background:#0f1830;color:#e6ecf5;padding:14px 16px;border-radius:10px;overflow-x:auto;margin:12px 0;font-size:13.5px;line-height:1.6}
.pd-info .pd-detail pre code{background:none;color:inherit;padding:0}
.pd-info .pd-detail table{border-collapse:collapse;width:100%;margin:14px 0;font-size:14px;overflow:hidden;border-radius:10px}
.pd-info .pd-detail caption{padding:8px;color:var(--c-muted);font-size:13px}
.pd-info .pd-detail th,.pd-info .pd-detail td{border:1px solid #dce4f0;padding:10px 12px;vertical-align:top;text-align:left;line-height:1.6}
.pd-info .pd-detail th{background:#f3f7ff;font-weight:700;color:var(--c-ink)}
.pd-info .pd-detail tbody tr:nth-child(2n){background:#fafcff}

/* ---- 通用：空状态 / 轻入场 ---- */
.empty{color:var(--c-muted);font-size:14px;padding:18px 0;text-align:center}
@keyframes ppUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.hub-card,.pp-module{animation:ppUp .5s both}
.hub-card:nth-child(2){animation-delay:.06s}
.hub-card:nth-child(3){animation-delay:.12s}
.hub-card:nth-child(4){animation-delay:.18s}

@media(max-width:860px){
  .brand-layout{grid-template-columns:1fr;gap:20px}
  .brand-cats{position:static;display:flex;gap:8px;overflow-x:auto;padding:10px 12px;-webkit-overflow-scrolling:touch}
  .bc-title{display:none}
  .bc-link{flex:0 0 auto;white-space:nowrap;padding:9px 14px}
  .hub-grid{grid-template-columns:1fr}
  .pp-grid{grid-template-columns:1fr}
  .pd-grid{grid-template-columns:1fr;gap:24px}
  .pd-media{position:static}
  .pp-module-head .pp-module-sub{display:none}
  .hub-ic{width:54px;height:54px;font-size:20px}
}
@media(max-width:720px){
  .pd-hero{padding:40px 0 32px}
}

/* ============ 骨架屏 skeleton（灰色闪烁占位条） ============ */
.skeleton-item{position:relative;overflow:hidden;background:#e9edf3;border-radius:12px}
.skeleton-item::after{content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.75),transparent);
  animation:sk-shimmer 1.25s ease-in-out infinite}
@keyframes sk-shimmer{100%{transform:translateX(100%)}}
.sk-line{display:block;height:11px;border-radius:6px;background:#dde3ec}
.sk-card{display:flex;flex-direction:column;padding:0;overflow:hidden}
.sk-card .sk-media{width:100%;aspect-ratio:16/10;background:#dde3ec}
.sk-card .sk-body{display:flex;flex-direction:column;gap:9px;padding:14px 16px 18px}
.sk-grid{display:grid;gap:18px;margin:6px 0 4px}
.sk-grid.sk-cols-1{grid-template-columns:1fr}
.sk-grid.sk-cols-2{grid-template-columns:repeat(2,1fr)}
.sk-grid.sk-cols-3{grid-template-columns:repeat(3,1fr)}
.sk-grid.sk-cols-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.sk-grid.sk-cols-3,.sk-grid.sk-cols-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.sk-grid.sk-cols-2,.sk-grid.sk-cols-3,.sk-grid.sk-cols-4{grid-template-columns:1fr}}
/* hero 骨架：仅覆盖左侧文案列（背景图仍秒出），绝对定位叠在 hero 上，不产生布局抖动 */
.sk-hero{position:absolute;left:60px;top:50%;transform:translateY(-50%);width:min(680px,80%);min-height:auto;z-index:5;background:rgba(233,237,243,.92);border-radius:14px;padding:26px 28px}
.sk-hero .sk-bar{position:static;width:100%;transform:none}
.sk-hero .sk-bar .sk-line{height:16px;margin:0 0 16px}
.sk-hero .sk-bar .sk-line.lg{height:34px;width:72%;margin:0 0 20px}
@media (max-width:600px){.sk-hero{left:20px;right:20px;width:auto}}
/* 产品详情骨架：左媒体 + 右文字双栏（匹配 .pd-grid，避免整片错位跳动） */
.sk-pd-grid{display:grid;grid-template-columns:minmax(0,440px) 1fr;gap:28px;align-items:start;margin-top:18px}
.sk-pd-media{width:100%;aspect-ratio:4/3;background:#dde3ec;border-radius:12px}
.sk-pd-info{padding-top:6px}
@media (max-width:760px){.sk-pd-grid{grid-template-columns:1fr}}
@media (prefers-reduced-motion: reduce){.skeleton-item::after{animation:none}}