/* 修改说明：整体重构页面视觉风格与布局结构，贴近参考站并提升美感创意（开始） */
    :root {
      --bg: #060f23;
      --bg-2: #0b1a3a;
      --primary: #1f6bff;
      --primary-2: #2d8bff;
      --accent: #22d3ee;
      --green: #34d399;
      --text: #0f172a;
      --muted: #64748b;
      --line: #e2e8f0;
      --card: #ffffff;
      --radius: 16px;
      --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
      --trans: .35s cubic-bezier(.4, 0, .2, 1);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
      color: var(--text);
      background: #fff;
      line-height: 1.75;
      overflow-x: hidden;
    }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    .container { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
    .section { padding: 96px 0; }
    .title {
      font-size: clamp(28px, 3.8vw, 46px);
      line-height: 1.25;
      letter-spacing: -0.02em;
      font-weight: 800;
      color: #0f172a;
      text-align: center;
    }
    .subtitle {
      margin: 14px auto 0;
      max-width: 780px;
      text-align: center;
      color: var(--muted);
      font-size: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-width: 154px;
      height: 48px;
      border-radius: 999px;
      border: 0;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--trans);
      white-space: nowrap;
    }
    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 10px 24px rgba(31, 107, 255, 0.35);
    }
    .btn-primary:hover { transform: translateY(-2px); filter: brightness(1.06); }
    .btn-ghost {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.35);
    }
    .btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }

    /* Header */
    .header {
      position: fixed;
      inset: 0 0 auto 0;
      z-index: 50;
      transition: var(--trans);
      border-bottom: 1px solid transparent;
    }
    .header-inner {
      height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .header.scrolled {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(10px);
      border-color: #eef2ff;
      box-shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
    }
    /* Logo — 图标+文字组合样式（开始） */
    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-weight: 900;
      font-size: 24px;
      letter-spacing: .3px;
      text-decoration: none;
    }
    .logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      object-fit: cover;
      flex-shrink: 0;
    }
    .logo-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
    }
    .logo-brand {
      font-size: 22px;
      font-weight: 900;
      letter-spacing: 1px;
    }
    .logo-sub {
      font-size: 10px;
      font-weight: 500;
      letter-spacing: 2px;
      opacity: .7;
      text-transform: uppercase;
    }
    .logo .dot { color: var(--accent); }
    .header.scrolled .logo { color: #0f172a; }
    /* Logo — 图标+文字组合样式（结束） */
    .nav { display: flex; align-items: center; gap: 22px; }
    .nav a {
      color: rgba(255, 255, 255, 0.86);
      font-size: 14px;
      position: relative;
      padding: 2px 0;
    }
    .nav a:hover, .nav a.active { color: #fff; }
    .header.scrolled .nav a { color: #334155; }
    .header.scrolled .nav a:hover, .header.scrolled .nav a.active { color: var(--primary); }
    .nav a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -5px;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: var(--trans);
    }
    .nav a:hover::after, .nav a.active::after { width: 100%; }
    .header-cta {
      width: 120px;
      height: 40px;
      border-radius: 999px;
      border: 0;
      color: #081226;
      background: linear-gradient(135deg, #5eead4, #22d3ee);
      font-weight: 700;
      cursor: pointer;
      transition: var(--trans);
    }
    .header-cta:hover { transform: translateY(-1px); }
    .menu-btn {
      display: none;
      width: 40px;
      height: 40px;
      border: 0;
      background: transparent;
      cursor: pointer;
    }
    .menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      margin: 5px auto;
      background: #fff;
      transition: var(--trans);
    }
    .header.scrolled .menu-btn span { background: #0f172a; }

    /* 资源路径修正：CSS外链后改为同目录相对路径（开始） */
    /* Hero — 使用AI生成的行业背景图 */
    .hero {
      position: relative;
      min-height: 100vh;
      color: #fff;
      background: url('./hero-bg.jpg?v=716ee88a5c524971') right center / cover no-repeat; /* 重卡主体在右侧，左侧留给标题区 */
      overflow: hidden;
      display: flex;
      align-items: center;
      padding-top: 98px;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(5,13,32,.72) 0%, rgba(12,29,67,.58) 40%, rgba(30,78,216,.42) 100%);
      pointer-events: none;
    }
    .hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 20% 0%, rgba(45,139,255,.22), transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(34,211,238,.15), transparent 45%);
      pointer-events: none;
    }
    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      align-items: center;
      gap: 28px;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 14px;
      border: 1px solid rgba(255, 255, 255, .3);
      border-radius: 999px;
      color: #c7e8ff;
      font-size: 12px;
      margin-bottom: 18px;
      background: rgba(255, 255, 255, .06);
    }
    .hero-tag i {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #34d399;
      box-shadow: 0 0 0 5px rgba(52, 211, 153, .22);
    }
    .hero h1 {
      font-size: clamp(36px, 5.2vw, 60px);
      line-height: 1.18;
      letter-spacing: -0.02em;
      font-weight: 900;
      margin-bottom: 18px;
    }
    .hero h1 .em {
      background: linear-gradient(90deg, #8be9ff, #5eead4);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    /* Hero 双段：略增行高与段间距，阅读更舒适（开始） */
    .hero p {
      max-width: 640px;
      color: rgba(235, 245, 255, .82);
      margin: 0 0 14px;
      font-size: 17px;
      line-height: 1.72;
    }
    .hero p:last-of-type { margin-bottom: 18px; }
    /* Hero 双段：略增行高与段间距，阅读更舒适（结束） */
    .hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
    .hero-side {
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .hero-card {
      width: min(560px, 100%);
      border-radius: 24px;
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255, 255, 255, .2);
      box-shadow: 0 30px 60px rgba(3, 6, 20, .3);
      backdrop-filter: blur(8px);
      padding: 16px;
      transform: translateY(12px);
    }
    .hero-card img {
      width: 100%;
      border-radius: 16px;
      display: block;
    }
    .floating-note {
      position: absolute;
      padding: 10px 12px;
      border-radius: 12px;
      background: rgba(6, 15, 35, .75);
      border: 1px solid rgba(134, 239, 172, .35);
      color: #d1fae5;
      font-size: 13px;
      box-shadow: var(--shadow);
      animation: floatY 3s ease-in-out infinite;
    }
    .floating-note.n1 { left: 0; top: 20px; }
    .floating-note.n2 { right: 10px; bottom: 26px; animation-delay: .8s; }
    .hero-kpis {
      margin-top: 38px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
    }
    .kpi {
      border: 1px solid rgba(255, 255, 255, .2);
      background: rgba(255, 255, 255, .06);
      border-radius: 14px;
      padding: 12px 10px;
      text-align: center;
    }
    .kpi b {
      display: block;
      font-size: 24px;
      color: #fff;
      line-height: 1.15;
    }
    .kpi span {
      display: block;
      margin-top: 3px;
      color: rgba(216, 233, 255, .8);
      font-size: 12px;
    }
    @keyframes floatY {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-7px); }
    }

    /* Fast entry section */
    .entry-strip {
      margin-top: -28px;
      position: relative;
      z-index: 2;
    }
    .entry-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
    }
    .entry-card {
      padding: 18px 18px;
      background: #fff;
      border: 1px solid #e8eef9;
      border-radius: 14px;
      box-shadow: var(--shadow);
      transition: var(--trans);
    }
    .entry-card:hover { transform: translateY(-4px); }
    .entry-card b { display: block; font-size: 18px; margin-bottom: 6px; }
    .entry-card p { color: var(--muted); font-size: 14px; }

    /* Ecosystem section */
    /* Eco — 修改说明：改为左指标列+右地球插图布局（开始） */
    .eco {
      background: #fafbfd;
      overflow: hidden;
    }
    .eco-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      align-items: center;
    }
    .eco-left h2 {
      font-size: clamp(28px, 3.6vw, 42px);
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      margin-bottom: 36px;
      text-align: left;
    }
    .eco-stat {
      display: flex;
      gap: 16px;
      align-items: flex-start;
      margin-bottom: 28px;
    }
    .eco-dot {
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: #ef4444;
      flex-shrink: 0;
      margin-top: 5px;
    }
    .eco-stat-text b {
      display: block;
      font-size: 20px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 3px;
      letter-spacing: -.01em;
    }
    .eco-stat-text span {
      display: block;
      font-size: 14px;
      color: #64748b;
      line-height: 1.65;
    }
    .eco-right {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 440px;
    }
    .eco-right img {
      width: 100%;
      max-width: 520px;
      height: auto;
      display: block;
    }
    @media (max-width: 900px) {
      .eco-layout { grid-template-columns: 1fr; }
      .eco-right { min-height: 300px; }
    }
    /* 修改说明：改为左指标列+右地球插图布局（结束） */

    /* 生态解决方案：改为参考图的横向深色质感卡片（开始） */
    .solutions-grid {
      padding: 64px 0 74px;
      background: #2a3347;
    }
    .solutions-grid .title {
      text-align: center;
      font-size: clamp(30px, 3vw, 40px);
      margin-bottom: 14px;
      color: #fff;
      letter-spacing: .01em;
    }
    .solutions-grid__cards {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }
    .solution-card {
      position: relative;
      min-height: clamp(320px, 41vh, 430px);
      background: #111827;
      border-radius: 14px;
      overflow: hidden;
      box-shadow: 0 16px 34px rgba(8, 15, 30, .34);
    }
    .solution-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transform: scale(1.03);
      transition: transform .5s ease;
    }
    .solution-card::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(18, 29, 53, .20) 0%, rgba(17, 28, 50, .58) 58%, rgba(16, 23, 42, .90) 100%);
      pointer-events: none;
    }
    .solution-card__overlay {
      position: absolute;
      inset: 0;
      z-index: 2;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-end;
      text-align: center;
      padding: 18px 14px 16px;
      color: #fff;
    }
 

    /* 解决方案卡片：按行业替换为 Unsplash 适配图标（结束） */
    .solution-card__overlay h3 {
      margin: 0 0 8px;
      font-size: 26px;
      line-height: 1.2;
      font-weight: 800;
      letter-spacing: .01em;
      text-transform: uppercase;
    }
    .solution-card__overlay p {
      margin: 0 0 12px;
      font-size: 14px;
      line-height: 1.6;
      color: rgba(226, 232, 240, .95);
      max-width: 28ch;
      min-height: 3.2em;
    }
    .solution-card__overlay a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 102px;
      height: 34px;
      border: 1px solid rgba(255, 255, 255, .75);
      border-radius: 3px;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: .02em;
      color: #fff;
      background: rgba(9, 16, 30, .30);
      transition: var(--trans);
    }
    .solution-card__overlay a:hover {
      background: #fff;
      color: #0f172a;
      border-color: #fff;
    }
    .solution-card:hover img { transform: scale(1.08); }
    @media (max-width: 1100px) {
      .solutions-grid__cards { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
      .solution-card { min-height: 320px; }
    }
    @media (max-width: 760px) {
      .solutions-grid { padding: 44px 0 48px; }
      .solutions-grid__cards { grid-template-columns: 1fr; }
      .solution-card { min-height: 240px; }
      .solution-card__overlay h3 { font-size: 20px; }
    }
    /* 生态解决方案：改为参考图的横向深色质感卡片（结束） */

    /* Products — 左Tab+中文案+右配图（修改说明：改为参考站竖排Tab三栏布局 开始） */
    .products {
      background: linear-gradient(180deg, #f8fbff, #fff);
    }
    .prod-layout {
      margin-top: 36px;
      display: grid;
      grid-template-columns: 220px 1fr 400px;
      gap: 0;
      border: 1px solid #e5edf9;
      border-radius: 18px;
      overflow: hidden;
      box-shadow: var(--shadow);
      background: #fff;
      min-height: 400px;
    }
    .prod-tabs {
      background: #f7fbff;
      border-right: 1px solid #edf2fb;
      display: flex;
      flex-direction: column;
      padding: 12px 0;
    }
    .prod-tab {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 16px 20px;
      font-size: 15px;
      font-weight: 500;
      color: #475569;
      cursor: pointer;
      transition: var(--trans);
      border: none;
      background: transparent;
      text-align: left;
      position: relative;
    }
    .prod-tab::before {
      content: "";
      position: absolute;
      left: 0;
      top: 8px;
      bottom: 8px;
      width: 4px;
      border-radius: 0 4px 4px 0;
      background: transparent;
      transition: var(--trans);
    }
    .prod-tab:hover { background: #eef5ff; color: #1d4ed8; }
    .prod-tab.active {
      background: linear-gradient(135deg, rgba(34,211,238,.12), rgba(52,211,153,.12));
      color: #047857;
      font-weight: 700;
    }
    .prod-tab.active::before { background: #34d399; }
    .prod-tab-icon {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      display: grid;
      place-items: center;
      font-style: normal;
      font-size: 16px;
      background: #eef5ff;
      color: #3b82f6;
      flex-shrink: 0;
      transition: var(--trans);
    }
    .prod-tab.active .prod-tab-icon {
      background: linear-gradient(135deg, #34d399, #22d3ee);
      color: #fff;
    }
    .prod-main {
      display: none;
      flex-direction: column;
      justify-content: center;
      padding: 32px 28px;
    }
    .prod-main.active { display: flex; }
    .prod-main h3 {
      font-size: 26px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 4px;
    }
    .prod-main .prod-slogan {
      font-size: 15px;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 14px;
    }
    .prod-main .prod-desc {
      color: var(--muted);
      font-size: 14.5px;
      line-height: 1.85;
      margin-bottom: 22px;
    }
    /* 修改说明：产品与功能区域改为标签化视觉样式（开始） */
    .prod-btns {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .prod-feature-title {
      font-size: 13px;
      font-weight: 700;
      color: #2563eb;
      letter-spacing: .02em;
    }
    .prod-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 10px;
    }
    .prod-tag {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      padding: 6px 12px;
      border-radius: 999px;
      border: 1px solid #dbeafe;
      background: linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
      color: #1e3a8a;
      font-size: 12px;
      font-weight: 600;
      line-height: 1.3;
      transition: var(--trans);
    }
    .prod-tag:hover {
      transform: translateY(-1px);
      border-color: #93c5fd;
      box-shadow: 0 6px 14px rgba(30, 64, 175, .14);
    }
    /* 修改说明：产品与功能区域改为标签化视觉样式（结束） */
    .prod-img {
      display: none;
      overflow: hidden;
      background: #0f172a;
    }
    .prod-img.active { display: block; }
    .prod-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
    @media (max-width: 1100px) {
      .prod-layout { grid-template-columns: 190px 1fr; }
      .prod-img { display: none !important; }
    }
    @media (max-width: 760px) {
      .prod-layout { grid-template-columns: 1fr; }
      .prod-tabs { flex-direction: row; overflow-x: auto; padding: 0; border-right: 0; border-bottom: 1px solid #edf2fb; }
      .prod-tab { white-space: nowrap; padding: 12px 16px; font-size: 14px; }
      .prod-tab::before { display: none; }
    }
    /* 修改说明：改为参考站竖排Tab三栏布局 结束 */

    /* Highlights dark */
    .highlights {
      background: #071428;
      color: #e2ecff;
      position: relative;
      overflow: hidden;
    }
    .highlights::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 80% 10%, rgba(59, 130, 246, .25), transparent 36%);
    }
    .highlights .title { color: #fff; position: relative; z-index: 1; }
    .highlights .subtitle { color: #b9c8e8; position: relative; z-index: 1; }
    .metrics {
      position: relative;
      z-index: 1;
      margin-top: 34px;
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 12px;
    }
    .metric {
      border: 1px solid rgba(191, 219, 254, .22);
      border-radius: 14px;
      background: rgba(255, 255, 255, .04);
      padding: 18px 12px;
      text-align: center;
    }
    .metric b {
      display: block;
      color: #fff;
      font-size: clamp(26px, 3vw, 34px);
      line-height: 1.2;
      font-weight: 800;
    }
    .metric span { color: #b6c8e6; font-size: 13px; }

    /* 价值主张全宽区块：浅蓝底、四列图标宫格、双按钮（参考 B 端落地页）（开始） */
    .value-band {
      width: 100%;
      max-width: none;
      margin: 0;
      padding: clamp(80px, 11vw, 128px) 0;
      background:
        radial-gradient(ellipse 90% 60% at 50% -10%, rgba(59, 130, 246, 0.12), transparent 55%),
        linear-gradient(180deg, #f5f9ff 0%, #ffffff 42%, #eef4ff 100%);
      border-top: 1px solid rgba(59, 130, 246, 0.08);
      border-bottom: 1px solid rgba(59, 130, 246, 0.06);
    }
    .value-band__inner {
      text-align: center;
    }
    .value-band__head {
      margin-bottom: clamp(40px, 6vw, 64px);
    }
    .value-band__title {
      max-width: 920px;
      margin-left: auto;
      margin-right: auto;
      background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 55%, var(--primary) 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .value-band__lead {
      max-width: 860px;
      margin-top: 20px;
      font-size: clamp(15px, 1.35vw, 17px);
      line-height: 1.85;
      color: #64748b;
    }
    .value-features {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: clamp(20px, 3vw, 36px);
      margin: 0 auto;
      max-width: 1120px;
      text-align: center;
    }
    .value-feature {
      padding: clamp(20px, 2.5vw, 28px) 16px;
      border-radius: 20px;
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid rgba(59, 130, 246, 0.14);
      box-shadow: 0 12px 40px rgba(30, 64, 175, 0.06);
      transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
    }
    .value-feature:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 48px rgba(31, 107, 255, 0.12);
      border-color: rgba(59, 130, 246, 0.28);
    }
    .value-feature__icon {
      width: 88px;
      height: 88px;
      margin: 0 auto 18px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: linear-gradient(160deg, #eff6ff 0%, #dbeafe 45%, #bfdbfe 100%);
      box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.9),
        0 10px 28px rgba(37, 99, 235, 0.15);
    }
    .value-feature__title {
      font-size: clamp(17px, 1.5vw, 19px);
      font-weight: 800;
      color: #0f172a;
      letter-spacing: 0.02em;
      margin-bottom: 6px;
    }
    .value-feature__en {
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      color: var(--primary);
      opacity: 0.92;
      margin-bottom: 10px;
    }
    .value-feature__hint {
      font-size: 13px;
      line-height: 1.65;
      color: #94a3b8;
      max-width: 220px;
      margin: 0 auto;
    }
    /* value-band 四宫格：列表文案与 copy9 trust-grid 一致，ul 继承 hint 视觉（开始） */
    ul.value-feature__hint {
      list-style: none;
      padding: 0;
      text-align: left;
    }
    ul.value-feature__hint li {
      margin: 0.35em 0;
      padding-left: 0.85em;
      position: relative;
    }
    ul.value-feature__hint li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0.55em;
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: var(--primary);
      opacity: 0.55;
    }
    /* value-band 四宫格：列表文案与 copy9 trust-grid 一致，ul 继承 hint 视觉（结束） */
    .value-band__cta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-top: clamp(44px, 6vw, 64px);
    }
    .value-band__btn { min-width: 168px; }
    .value-band__btn-outline {
      min-width: 168px;
      height: 48px;
      padding: 0 24px;
      border-radius: 999px;
      border: 2px solid var(--primary);
      background: transparent;
      color: var(--primary);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--trans);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .value-band__btn-outline:hover {
      background: rgba(31, 107, 255, 0.08);
      transform: translateY(-2px);
    }
    .value-band__logos {
      margin-top: clamp(40px, 5vw, 56px);
    }
    /* 价值主张全宽区块（结束） */
    .logos {
      margin-top: 34px;
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 10px;
    }
    .logo-pill {
      height: 50px;
      border-radius: 12px;
      border: 1px solid #e5edf9;
      background: #f9fbff;
      display: grid;
      place-items: center;
      color: #334155;
      font-weight: 700;
      font-size: 13px;
    }

    /* cases + news */
    /* 修改说明：客户案例改为全宽背景轮播+左右箭头+底部分页点（开始） */
    .cases.cases--slider {
      padding: 0;
      max-width: none;
      width: 100%;
      background: #0f172a;
      overflow: hidden;
    }
    .cases-slider {
      position: relative;
      width: 100%;
    }
    .cases-slider__title {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      z-index: 4;
      text-align: center;
      padding: 44px 24px 0;
      margin: 0;
      font-size: clamp(22px, 3vw, 30px);
      font-weight: 800;
      color: #fff;
      letter-spacing: 0.02em;
      text-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
      pointer-events: none;
    }
    .cases-slider__viewport {
      position: relative;
      width: 100%;
      overflow: hidden;
      min-height: min(72vh, 640px);
    }
    .cases-slider__track {
      display: flex;
      width: 400%;
      transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
      will-change: transform;
    }
    .case-slide {
      position: relative;
      flex: 0 0 25%;
      width: 25%;
      min-height: min(72vh, 640px);
      background-size: cover;
      background-position: center;
      box-sizing: border-box;
    }
    .case-slide::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(
        105deg,
        rgba(15, 23, 42, 0.92) 0%,
        rgba(30, 41, 59, 0.72) 42%,
        rgba(15, 23, 42, 0.45) 100%
      );
      z-index: 1;
    }
    .case-slide:nth-child(1) { background-image: url("./case-slide-1-seedream.jpg"); }
    .case-slide:nth-child(2) { background-image: url("./case-slide-2-seedream.jpg"); }
    .case-slide:nth-child(3) { background-image: url("./case-slide-3-seedream.jpg"); }
    .case-slide:nth-child(4) { background-image: url("./case-slide-4-seedream.jpg"); }
    .case-slide__inner {
      position: relative;
      z-index: 2;
      height: 100%;
      min-height: min(72vh, 640px);
      display: flex;
      align-items: center;
      padding: 120px 0 100px;
      max-width: 1200px;
      margin: 0 auto;
      padding-left: max(24px, calc((100vw - 1200px) / 2 + 24px));
      padding-right: 24px;
    }
    .case-slide__body {
      max-width: 640px;
      text-align: left;
      color: #fff;
    }
    .case-slide__brand {
      font-size: 15px;
      font-weight: 700;
      letter-spacing: 0.04em;
      opacity: 0.92;
      margin-bottom: 12px;
    }
    .case-slide__headline {
      font-size: clamp(22px, 3.2vw, 36px);
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }
    .case-slide__desc {
      font-size: 15px;
      line-height: 1.85;
      opacity: 0.9;
      margin-bottom: 28px;
    }
    .case-slide__btn {
      display: inline-block;
      padding: 12px 32px;
      border: 1px solid rgba(255, 255, 255, 0.85);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      border-radius: 2px;
      transition: var(--trans);
    }
    .case-slide__btn:hover {
      background: #fff;
      color: #0f172a;
      border-color: #fff;
    }
    .cases-arrow {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      z-index: 5;
      width: 48px;
      height: 48px;
      border: 0;
      background: transparent;
      color: rgba(255, 255, 255, 0.85);
      font-size: 28px;
      line-height: 1;
      cursor: pointer;
      transition: var(--trans);
      padding: 0;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .cases-arrow:hover { color: #fff; opacity: 1; }
    .cases-arrow--prev { left: max(8px, calc((100vw - 1200px) / 2 - 8px)); }
    .cases-arrow--next { right: max(8px, calc((100vw - 1200px) / 2 - 8px)); }
    .cases-dots {
      position: absolute;
      bottom: 28px;
      left: 0;
      right: 0;
      z-index: 5;
      display: flex;
      justify-content: center;
      gap: 10px;
    }
    .cases-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      border: 0;
      padding: 0;
      background: rgba(255, 255, 255, 0.35);
      cursor: pointer;
      transition: var(--trans);
    }
    .cases-dot.active {
      background: #38bdf8;
      transform: scale(1.15);
    }
    .cases-dot:hover { background: rgba(255, 255, 255, 0.65); }
    @media (max-width: 768px) {
      .case-slide__inner {
        padding-left: 24px;
        padding-top: 100px;
        align-items: flex-end;
        padding-bottom: 88px;
      }
      .cases-arrow--prev { left: 4px; }
      .cases-arrow--next { right: 4px; }
    }
    /* 修改说明：客户案例改为全宽背景轮播+左右箭头+底部分页点（结束） */
    .badge {
      display: inline-flex;
      align-items: center;
      height: 28px;
      border-radius: 999px;
      padding: 0 12px;
      background: #edf5ff;
      color: #1d4ed8;
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    /* 修改说明：资讯动态改为新闻中心不对称栅格布局（开始） */
    .news-wrap {
      background: #fff;
    }
    .news-head {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 24px;
      flex-wrap: wrap;
    }
    .news-head h2 {
      font-size: clamp(26px, 3.2vw, 36px);
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.02em;
      margin: 0;
    }
    .news-more {
      font-size: 15px;
      font-weight: 600;
      color: #64748b;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: var(--trans);
    }
    .news-more:hover { color: var(--primary); }
    .news-mosaic {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      grid-template-rows: minmax(200px, 1fr) minmax(200px, 1fr);
      gap: 20px;
      min-height: 460px;
    }
    .news-tile {
      position: relative;
      border-radius: 12px;
      overflow: hidden;
      display: block;
      color: inherit;
      transition: var(--trans);
      box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
    }
    .news-tile:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 36px rgba(15, 23, 42, 0.12);
    }
    .news-tile--lg {
      grid-row: 1 / -1;
      min-height: 0;
    }
    .news-tile__bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      transition: transform .5s ease;
    }
    .news-tile:hover .news-tile__bg { transform: scale(1.04); }
    /* 修改说明：资讯配图换为微信推文主题 Seedream 生成图并加缓存参数（开始） */
    .news-tile--blue .news-tile__bg { background-image: url("./news-feature-blue-seedream.jpg?v=20260414wx2"); }
    .news-tile--red .news-tile__bg { background-image: url("./news-feature-red-seedream.jpg?v=20260414wx2"); }
    .news-tile--img .news-tile__bg { background-image: url("./news-thumb-warehouse-seedream.jpg?v=20260414wx2"); }
    .news-tile--wx4 .news-tile__bg { background-image: url("./news-feature-guizhou-seedream.jpg?v=20260414wx2"); }
    /* 修改说明：资讯配图换为微信推文主题 Seedream 生成图并加缓存参数（结束） */
    /* 资源路径修正：CSS外链后改为同目录相对路径（结束） */
    .news-tile__overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 0%, rgba(15, 23, 42, 0.15) 45%, rgba(15, 23, 42, 0.82) 100%);
      pointer-events: none;
    }
    .news-tile--solid {
      background: #b5ae9d;
      display: flex;
      flex-direction: column;
      padding: 22px 20px;
      justify-content: space-between;
    }
    .news-tile--solid .news-tile__brand {
      font-size: 12px;
      font-weight: 700;
      color: rgba(15, 23, 42, 0.45);
      letter-spacing: 0.06em;
    }
    .news-tile--solid .news-tile__title {
      font-size: 17px;
      font-weight: 800;
      color: #1e293b;
      line-height: 1.45;
      margin: 12px 0 auto;
    }
    .news-tile--solid .news-tile__meta {
      font-size: 13px;
      color: #475569;
      margin-top: 14px;
    }
    .news-tile__inner {
      position: relative;
      z-index: 1;
      height: 100%;
      min-height: 280px;
      padding: 28px 24px 22px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      color: #fff;
    }
    .news-tile--lg .news-tile__inner { min-height: 420px; }
    .news-tile__headline {
      font-size: clamp(20px, 2.2vw, 26px);
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: auto;
      padding-right: 8px;
      text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
    }
    .news-tile__foot {
      font-size: 13px;
      line-height: 1.55;
      opacity: 0.95;
    }
    .news-tile__foot time {
      display: block;
      font-weight: 600;
      margin-bottom: 6px;
      opacity: 0.9;
    }
    .news-tile--sm { min-height: 210px; }
    .news-tile--sm .news-tile__inner { min-height: 0; padding: 0; }
    .news-tile__caption {
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      z-index: 2;
      padding: 16px 16px 14px;
      background: linear-gradient(180deg, transparent 0%, rgba(15, 23, 42, 0.75) 40%, rgba(15, 23, 42, 0.92) 100%);
      color: #fff;
    }
    /* 修改说明：资讯小卡标题样式（开始） */
    .news-tile__caption-title {
      font-size: 15px;
      font-weight: 800;
      line-height: 1.35;
      margin: 0 0 8px;
      text-shadow: 0 1px 8px rgba(0, 0, 0, 0.25);
    }
    .news-tile__caption p {
      font-size: 13px;
      font-weight: 600;
      line-height: 1.5;
      margin: 0;
      opacity: 0.94;
    }
    /* 修改说明：资讯小卡标题样式（结束） */
    @media (max-width: 1024px) {
      .news-mosaic {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
      }
      .news-tile--lg { grid-row: auto; }
      .news-tile--lg .news-tile__inner { min-height: 320px; }
    }
    @media (max-width: 640px) {
      .news-mosaic { grid-template-columns: 1fr; }
    }
    /* 修改说明：资讯动态改为新闻中心不对称栅格布局（结束） */
    .result {
      margin-top: 14px;
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }
    .result span {
      border-radius: 999px;
      border: 1px solid #bfdbfe;
      background: #eff6ff;
      color: #1e40af;
      font-size: 12px;
      padding: 6px 12px;
      font-weight: 700;
    }

    /* About + CTA */
    .about-grid {
      margin-top: 34px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      align-items: center;
    }
    .about-box {
      border: 1px solid #e5edf9;
      border-radius: 16px;
      background: #fff;
      box-shadow: var(--shadow);
      padding: 26px;
    }
    .about-box h3 { font-size: 30px; line-height: 1.3; margin-bottom: 12px; }
    .about-box p { color: var(--muted); font-size: 15px; margin-bottom: 12px; }
    .about-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
    .about-tags span {
      border-radius: 999px;
      background: #f2f8ff;
      color: #1d4ed8;
      border: 1px solid #dbeafe;
      padding: 6px 12px;
      font-size: 13px;
      font-weight: 600;
    }
    .about-visual {
      overflow: hidden;
      border-radius: 16px;
      box-shadow: var(--shadow);
    }
    .about-visual img { width: 100%; height: 100%; object-fit: cover; display: block; }

    .cta {
      background: linear-gradient(135deg, #0f172a, #1d4ed8);
      color: #fff;
      text-align: center;
    }
    .cta h3 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 10px; }
    .cta p { color: #ccddff; margin-bottom: 24px; }
    .cta .btn-ghost { border-color: rgba(255,255,255,.5); }
    .cta .btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

    /* footer */
    .footer {
      background: #050d20;
      color: #c7d5f2;
      padding: 56px 0 24px;
      border-top: 1px solid rgba(219, 234, 254, 0.1);
    }
    /* 修改说明：底部四列，最后一栏为联系+二维码合并（开始） */
    .footer-grid {
      display: grid;
      /* 最后一列 auto：按二维码并排宽度占位，避免被 fr 挤窄导致换行 */
      grid-template-columns: 2fr 1fr 1fr auto;
      gap: 28px;
      padding-bottom: 20px;
      border-bottom: 1px solid rgba(219, 234, 254, .12);
      align-items: start;
    }
    .footer-contact {
      justify-self: end;
      max-width: min(100%, 320px);
      width: max-content;
    }
    .footer-contact ul {
      max-width: 280px;
    }
    .footer-contact__qrs {
      display: flex;
      flex-direction: row;
      flex-wrap: nowrap;
      gap: 14px;
      margin-top: 14px;
      align-items: flex-start;
      justify-content: flex-end;
    }
    /* 修改说明：底部四列，最后一栏为联系+二维码合并（结束） */
    .footer .logo { color: #fff; display: inline-flex; margin-bottom: 10px; }
    .footer p { color: #9fb0d3; font-size: 14px; }
    .footer h5 { color: #fff; font-size: 16px; margin-bottom: 9px; }
    .footer li { margin: 8px 0; font-size: 14px; color: #b9c8e8; }
    .footer li a:hover { color: #5eead4; }
    /* 修改说明：底部二维码样式（与联系合并后复用）（开始） */
    .footer-qr__item {
      margin: 0;
      text-align: center;
      width: 108px;
      flex: 0 0 auto;
    }
    .footer-qr__item img {
      display: block;
      width: 108px;
      height: 108px;
      box-sizing: border-box;
      object-fit: cover;
      padding: 6px;
      background: #fff;
      border-radius: 10px;
      box-shadow: 0 6px 18px rgba(0, 0, 0, .25);
      transition: transform .25s ease, box-shadow .25s ease;
    }
    .footer-qr__item:hover img {
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(94, 234, 212, .25);
    }
    .footer-qr__item figcaption {
      margin-top: 8px;
      font-size: 12px;
      color: #b9c8e8;
      letter-spacing: .5px;
    }
    /* 修改说明：底部二维码样式（与联系合并后复用）（结束） */
    .copyright {
      text-align: center;
      margin-top: 14px;
      color: #8fa1c7;
      font-size: 13px;
    }

    /* motion */
    .reveal { opacity: 0; transform: translateY(22px); transition: .55s ease; }
    .reveal.in { opacity: 1; transform: translateY(0); }

    /* responsive */
    @media (max-width: 1100px) {
      .hero-grid, .eco-grid, .about-grid, .solution-grid { grid-template-columns: 1fr; }
      .hero { padding-bottom: 38px; }
      .hero-kpis, .product-grid, .value-features, .metrics, .logos { grid-template-columns: repeat(2, 1fr); }
      /* 修改说明：响应式下联系+二维码栏跨整行居中（开始） */
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-contact {
        grid-column: 1 / -1;
        justify-self: center;
        margin-top: 10px;
        max-width: none;
      }
      .footer-contact__qrs { justify-content: center; }
      /* 修改说明：响应式下联系+二维码栏跨整行居中（结束） */
    }
    @media (max-width: 760px) {
      .header-inner { height: 68px; }
      .menu-btn { display: inline-block; }
      .nav {
        position: fixed;
        right: -100%;
        top: 0;
        width: 270px;
        height: 100vh;
        background: #0b1a3a;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 90px 24px 20px;
        transition: var(--trans);
      }
      .nav.open { right: 0; }
      .nav a, .header.scrolled .nav a { color: #dce8ff; font-size: 15px; }
      .header-cta { display: none; }
      .entry-grid, .case-grid, .hero-kpis, .metrics, .logos, .product-grid, .value-features { grid-template-columns: 1fr; }
      .title { font-size: 30px; }
      .section { padding: 74px 0; }
      .hero { min-height: auto; }
    }
    /* 修改说明：整体重构页面视觉风格与布局结构，贴近参考站并提升美感创意（结束） */

    /* 生态环形图组件样式（开始） */
    .eco-circle-wrap {
      position: relative;
      width: 100%;
      max-width: 600px;
      aspect-ratio: 1 / 1;
      margin: 0 auto;
    }
    .eco-ring {
      position: absolute;
      border-radius: 50%;
      left: 50%; top: 50%;
      transform: translate(-50%, -50%);
    }
    .eco-ring--outer {
      width: 100%; height: 100%;
      background: linear-gradient(135deg, #e0f2fe 0%, #cce8f6 50%, #d5f0f7 100%);
      border: 2px solid rgba(14,165,233,.18);
      box-shadow: 0 0 60px rgba(14,165,233,.08);
    }
    .eco-ring--mid {
      width: 72%; height: 72%;
      background: linear-gradient(160deg, #93c5fd 0%, #60a5fa 40%, #3b82f6 100%);
      border: 2.5px solid rgba(255,255,255,.35);
      box-shadow: inset 0 0 40px rgba(30,64,175,.15), 0 8px 32px rgba(59,130,246,.18);
    }
    .eco-ring--inner {
      width: 38%; height: 38%;
      background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
      border: 4px solid rgba(255,255,255,.5);
      box-shadow: 0 0 0 8px rgba(37,99,235,.12), inset 0 0 20px rgba(30,58,138,.25);
    }
    .eco-ring--core {
      width: 26%; height: 26%;
      background: #fff;
      border: 3px solid rgba(14,165,233,.25);
      box-shadow: 0 4px 24px rgba(14,165,233,.12);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      z-index: 5;
    }
    .eco-core-brand {
      font-size: clamp(11px, 1.6vw, 14px);
      color: #0ea5e9;
      font-weight: 700;
      letter-spacing: 2px;
      margin-bottom: 2px;
    }
    .eco-core-title {
      font-size: clamp(13px, 2vw, 18px);
      font-weight: 900;
      color: #0f172a;
      line-height: 1.35;
    }
    .eco-core-sub {
      font-size: clamp(8px, 1.1vw, 11px);
      color: #64748b;
      margin-top: 6px;
      letter-spacing: .5px;
    }

    .eco-side-label {
      position: absolute;
      z-index: 6;
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: clamp(11px, 1.3vw, 14px);
      font-weight: 800;
      color: #0f172a;
    }
    .eco-side-label--left { left: -8%; top: 50%; transform: translateY(-50%); }
    .eco-side-label--right { right: -6%; top: 50%; transform: translateY(-50%); }

    .eco-node {
      position: absolute;
      z-index: 10;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
    }
    .eco-node__icon {
      width: clamp(32px, 5vw, 46px);
      height: clamp(32px, 5vw, 46px);
      border-radius: 50%;
      background: rgba(255,255,255,.92);
      border: 2px solid rgba(14,165,233,.3);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: clamp(14px, 2vw, 20px);
      box-shadow: 0 3px 12px rgba(14,165,233,.12);
    }
    .eco-node__name {
      font-size: clamp(11px, 1.4vw, 14px);
      font-weight: 700;
      color: #0ea5e9;
      white-space: nowrap;
    }

    .eco-anno {
      position: absolute;
      z-index: 8;
      font-size: clamp(10px, 1.15vw, 12px);
      color: #334155;
      line-height: 1.7;
      white-space: nowrap;
    }
    .eco-anno b {
      display: block;
      font-size: clamp(10px, 1.15vw, 12px);
      color: #0f172a;
    }
    .eco-anno::before {
      content: "";
      display: inline-block;
      width: 4px; height: 4px;
      border-radius: 50%;
      background: #0ea5e9;
      margin-right: 4px;
      vertical-align: middle;
    }
    .eco-anno span::before {
      content: "· ";
      color: #94a3b8;
    }
    .eco-anno span {
      display: block;
      padding-left: 2px;
    }

    .eco-node--top       { top: 8%;  left: 50%; transform: translateX(-50%); }
    .eco-node--right     { top: 50%; right: 6%; transform: translateY(-50%); }
    .eco-node--bottom    { bottom: 6%; left: 50%; transform: translateX(-50%); }
    .eco-node--left-top  { top: 18%; left: 12%; }
    .eco-node--left-bot  { bottom: 14%; left: 10%; }

    .eco-anno--top-right   { top: 4%; right: 2%; text-align: left; }
    .eco-anno--right       { top: 38%; right: -32%; text-align: left; }
    .eco-anno--bottom      { bottom: 0; left: 50%; transform: translateX(-50%); text-align: center; }
    .eco-anno--left-top    { top: 14%; left: -28%; text-align: right; }
    .eco-anno--left-bot    { bottom: 10%; left: -30%; text-align: right; }

    .eco-端-label {
      position: absolute;
      z-index: 7;
      font-size: clamp(10px, 1.2vw, 13px);
      font-weight: 700;
      color: rgba(255,255,255,.92);
      letter-spacing: 1px;
    }
    .eco-端-label--asset   { top: 49%; left: 19%; transform: translate(-50%,-50%); }
    .eco-端-label--ops     { top: 49%; right: 19%; transform: translate(50%,-50%); }

    .eco-connector {
      position: absolute;
      z-index: 4;
      pointer-events: none;
    }
    .eco-connector--tl {
      top: 0; left: 0;
      width: 12%; height: 12%;
      border-left: 2px solid #94a3b8;
      border-top: 2px solid #94a3b8;
    }
    .eco-connector--tr {
      top: 0; right: 0;
      width: 12%; height: 12%;
      border-right: 2px solid #94a3b8;
      border-top: 2px solid #94a3b8;
    }
    .eco-connector--bl {
      bottom: 0; left: 0;
      width: 12%; height: 12%;
      border-left: 2px solid #94a3b8;
      border-bottom: 2px solid #94a3b8;
    }
    .eco-connector--br {
      bottom: 0; right: 0;
      width: 12%; height: 12%;
      border-right: 2px solid #94a3b8;
      border-bottom: 2px solid #94a3b8;
    }

    @media (max-width: 900px) {
      .eco-circle-wrap { max-width: 420px; }
      .eco-anno { display: none; }
      .eco-side-label { display: none; }
      .eco-connector { display: none; }
    }
    @media (max-width: 600px) {
      .eco-circle-wrap { max-width: 320px; }
    }
    /* 生态环形图组件样式（结束） */