:root {
      --brand: #D4213D;
      --brand-dark: #B01A32;
      --brand-light: #E8405A;
      --brand-glow: rgba(212, 33, 61, 0.25);
      --dark: #0A0A0F;
      --dark-2: #12121A;
      --dark-3: #1A1A26;
      --dark-4: #24243A;
      --gray: #8A8A9A;
      --gray-light: #B0B0C0;
      --white: #FFFFFF;
      --off-white: #F5F5F8;
      --font-cn: 'Noto Sans SC', sans-serif;
      --font-en: 'Outfit', sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { font-size: 16px; scroll-behavior: smooth; }
    body {
      font-family: var(--font-cn);
      color: var(--white);
      background: var(--dark);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    button { font-family: inherit; border: none; cursor: pointer; }
    img { max-width: 100%; display: block; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    /* ===== HEADER ===== */
    .header {
      position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
      background: rgba(10,10,15,0.8);
      backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(255,255,255,0.06);
      transition: all 0.3s ease;
    }
    .header.scrolled { background: rgba(10,10,15,0.95); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
    .header-inner {
      max-width: 1200px; margin: 0 auto; padding: 0 24px;
      display: flex; align-items: center; justify-content: space-between;
      height: 72px;
    }
    .logo { display: flex; align-items: center; gap: 12px; }
    .logo img { height: 42px; width: auto; }
    .logo-text {
      font-family: var(--font-en); font-size: 18px; font-weight: 700;
      color: var(--white); letter-spacing: 1px;
    }
    .nav-links { display: flex; align-items: center; gap: 32px; }
    .nav-links a {
      font-size: 14px; font-weight: 500; color: var(--gray-light);
      transition: color 0.2s ease; position: relative; padding: 4px 0;
    }
    .nav-links a:hover, .nav-links a.active { color: var(--white); }
    .nav-links a.active::after {
      content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
      height: 2px; background: var(--brand); border-radius: 2px;
    }
    .nav-cta {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 10px 24px; background: var(--brand); color: var(--white);
      border-radius: 6px; font-size: 14px; font-weight: 600;
      transition: all 0.3s ease;
    }
    .nav-cta:hover { background: var(--brand-light); transform: translateY(-1px); box-shadow: 0 4px 20px var(--brand-glow); }
    .mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
    .mobile-toggle span { width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: all 0.3s ease; }

    /* ===== HERO ===== */
    .hero {
      position: relative; min-height: 100vh;
      display: flex; align-items: center; justify-content: center;
      padding: 120px 24px 80px;
      overflow: hidden;
    }
    .hero-bg {
      position: absolute; inset: 0; z-index: 0;
    }
    .hero-bg::before {
      content: ''; position: absolute; top: -30%; right: -20%;
      width: 800px; height: 800px; border-radius: 50%;
      background: radial-gradient(circle, var(--brand-glow) 0%, transparent 60%);
      animation: heroGlow 8s ease-in-out infinite alternate;
    }
    .hero-bg::after {
      content: ''; position: absolute; bottom: -20%; left: -10%;
      width: 600px; height: 600px; border-radius: 50%;
      background: radial-gradient(circle, rgba(212,33,61,0.1) 0%, transparent 60%);
      animation: heroGlow 10s ease-in-out infinite alternate-reverse;
    }
    @keyframes heroGlow {
      0% { transform: translate(0, 0) scale(1); }
      100% { transform: translate(30px, -20px) scale(1.1); }
    }
    .hero-grid {
      position: absolute; inset: 0; z-index: 0;
      background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
      background-size: 60px 60px;
      mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
      -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    }
    .hero-content {
      position: relative; z-index: 1; text-align: center;
      max-width: 900px;
    }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 6px 16px; border-radius: 999px;
      background: rgba(212,33,61,0.12); border: 1px solid rgba(212,33,61,0.25);
      font-size: 13px; font-weight: 600; color: var(--brand-light);
      margin-bottom: 32px;
    }
    .hero-badge-dot {
      width: 6px; height: 6px; border-radius: 50%; background: var(--brand);
      animation: pulse 2s ease-in-out infinite;
    }
    @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
    .hero-title {
      font-size: clamp(36px, 6vw, 68px); font-weight: 900;
      line-height: 1.15; letter-spacing: -1px;
      margin-bottom: 24px;
    }
    .hero-title .accent {
      background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .hero-subtitle {
      font-size: clamp(16px, 2.2vw, 20px); font-weight: 400;
      color: var(--gray-light); line-height: 1.7;
      max-width: 640px; margin: 0 auto 48px;
    }
    .hero-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
    .btn-primary {
      display: inline-flex; align-items: center; gap: 10px;
      padding: 16px 36px; background: var(--brand); color: var(--white);
      border-radius: 8px; font-size: 16px; font-weight: 600;
      transition: all 0.3s ease; border: none;
    }
    .btn-primary:hover { background: var(--brand-light); transform: translateY(-2px); box-shadow: 0 8px 30px var(--brand-glow); }
    .btn-secondary {
      display: inline-flex; align-items: center; gap: 10px;
      padding: 16px 36px; background: transparent; color: var(--white);
      border: 1px solid rgba(255,255,255,0.15); border-radius: 8px;
      font-size: 16px; font-weight: 600; transition: all 0.3s ease;
    }
    .btn-secondary:hover { border-color: rgba(255,255,255,0.3); background: rgba(255,255,255,0.05); }

    .hero-stats {
      display: flex; align-items: center; justify-content: center;
      gap: 48px; margin-top: 64px; padding-top: 48px;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .hero-stat { text-align: center; }
    .hero-stat-num {
      font-family: var(--font-en); font-size: 36px; font-weight: 800;
      color: var(--white); line-height: 1;
    }
    .hero-stat-num .unit { font-size: 20px; font-weight: 600; color: var(--brand-light); }
    .hero-stat-label { font-size: 13px; color: var(--gray); margin-top: 8px; }

    /* ===== SECTION COMMON ===== */
    .section { padding: 100px 0; position: relative; scroll-margin-top: 80px; }
    .section-dark { background: var(--dark); }
    .section-darker { background: var(--dark-2); }
    .section-label {
      display: inline-flex; align-items: center; gap: 8px;
      font-size: 13px; font-weight: 600; color: var(--brand-light);
      text-transform: uppercase; letter-spacing: 2px;
      margin-bottom: 16px;
    }
    .section-label::before {
      content: ''; width: 24px; height: 2px; background: var(--brand); border-radius: 2px;
    }
    .section-title {
      font-size: clamp(28px, 4vw, 44px); font-weight: 800;
      line-height: 1.2; margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px; color: var(--gray-light); line-height: 1.7;
      max-width: 600px;
    }

    /* ===== ABOUT ===== */
    .about-grid {
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 64px; align-items: center;
    }
    .about-visual {
      position: relative; border-radius: 16px; overflow: hidden;
      background: var(--dark-3); aspect-ratio: 4/3;
      display: flex; align-items: center; justify-content: center;
    }
    .about-visual-inner {
      position: relative; width: 100%; height: 100%;
      display: flex; align-items: center; justify-content: center;
    }
    .about-visual-ring {
      position: absolute; border-radius: 50%; border: 1px solid rgba(212,33,61,0.15);
      animation: ringPulse 4s ease-in-out infinite;
    }
    .about-visual-ring:nth-child(1) { width: 200px; height: 200px; animation-delay: 0s; }
    .about-visual-ring:nth-child(2) { width: 300px; height: 300px; animation-delay: 0.5s; }
    .about-visual-ring:nth-child(3) { width: 400px; height: 400px; animation-delay: 1s; }
    @keyframes ringPulse {
      0%, 100% { opacity: 0.3; transform: scale(1); }
      50% { opacity: 0.8; transform: scale(1.05); }
    }
    .about-visual-logo {
      position: relative; z-index: 2;
      width: 120px; height: auto;
      filter: drop-shadow(0 0 30px var(--brand-glow));
    }
    .about-text .section-desc { margin-bottom: 32px; }
    .about-features { display: flex; flex-direction: column; gap: 16px; }
    .about-feature {
      display: flex; align-items: flex-start; gap: 16px;
      padding: 16px; border-radius: 12px;
      background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
      transition: all 0.3s ease; position: relative; overflow: hidden;
    }
    .about-feature::before {
      content: ''; position: absolute; top: 0; left: 0; bottom: 0; width: 3px;
      background: linear-gradient(180deg, var(--brand), var(--brand-light));
      transform: scaleY(0); transform-origin: top;
      transition: transform 0.4s ease;
    }
    .about-feature:hover::before { transform: scaleY(1); }
    .about-feature:hover { background: rgba(212,33,61,0.06); border-color: rgba(212,33,61,0.15); }
    .about-feature-icon {
      width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
      background: rgba(212,33,61,0.12); display: flex; align-items: center; justify-content: center;
      font-size: 18px; transition: transform 0.3s ease;
    }
    .about-feature:hover .about-feature-icon { transform: scale(1.1) rotate(5deg); }
    .about-feature-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
    .about-feature-desc { font-size: 13px; color: var(--gray); line-height: 1.5; }

    /* ===== SERVICES ===== */
    .services-grid {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
      margin-top: 48px;
    }
    .service-card {
      position: relative; padding: 36px 28px;
      background: var(--dark-3); border: 1px solid rgba(255,255,255,0.06);
      border-radius: 16px; transition: all 0.4s ease;
      overflow: hidden;
    }
    .service-card::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
      background: linear-gradient(90deg, var(--brand), var(--brand-light));
      transform: scaleX(0); transform-origin: left;
      transition: transform 0.4s ease;
    }
    .service-card:hover::before { transform: scaleX(1); }
    .service-card:hover {
      transform: translateY(-4px);
      border-color: rgba(212,33,61,0.2);
      box-shadow: 0 12px 40px rgba(0,0,0,0.3);
    }
    .service-icon {
      width: 56px; height: 56px; border-radius: 14px;
      background: rgba(212,33,61,0.1); display: flex; align-items: center; justify-content: center;
      font-size: 26px; margin-bottom: 24px;
      transition: transform 0.3s ease;
    }
    .service-card:hover .service-icon { transform: scale(1.15); }
    .service-title { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
    .service-desc { font-size: 14px; color: var(--gray-light); line-height: 1.7; margin-bottom: 20px; }
    .service-tags { display: flex; flex-wrap: wrap; gap: 6px; }
    .service-tag {
      padding: 4px 10px; border-radius: 4px; font-size: 12px; font-weight: 500;
      background: rgba(255,255,255,0.06); color: var(--gray-light);
    }

    /* ===== PROCESS ===== */
    .process-timeline {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
      margin-top: 48px; position: relative;
    }
    .process-timeline::before {
      content: ''; position: absolute; top: 40px; left: 12.5%; right: 12.5%;
      height: 2px;
      background: repeating-linear-gradient(90deg, var(--brand) 0, var(--brand) 8px, transparent 8px, transparent 16px);
      animation: dashFlow 1.5s linear infinite;
    }
    @keyframes dashFlow {
      0% { background-position: 0 0; }
      100% { background-position: 32px 0; }
    }
    .process-step { text-align: center; position: relative; padding: 0 16px; }
    .process-num {
      width: 80px; height: 80px; border-radius: 50%;
      background: var(--dark-3); border: 2px solid var(--brand);
      display: flex; align-items: center; justify-content: center;
      margin: 0 auto 24px; position: relative; z-index: 1;
      font-family: var(--font-en); font-size: 28px; font-weight: 800;
      color: var(--brand-light); transition: all 0.3s ease;
    }
    .process-step:hover .process-num {
      background: var(--brand); color: var(--white);
      box-shadow: 0 0 30px var(--brand-glow);
      transform: scale(1.1);
    }
    .process-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
    .process-desc { font-size: 13px; color: var(--gray); line-height: 1.6; }

    /* ===== ADVANTAGES ===== */
    .adv-grid {
      display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
      margin-top: 48px;
    }
    .adv-card {
      padding: 32px; border-radius: 16px;
      background: var(--dark-3); border: 1px solid rgba(255,255,255,0.06);
      display: flex; gap: 24px; transition: all 0.35s ease;
      position: relative; overflow: hidden;
    }
    .adv-card::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--brand), var(--brand-light));
      transform: scaleX(0); transform-origin: left;
      transition: transform 0.4s ease;
    }
    .adv-card:hover::before { transform: scaleX(1); }
    .adv-card:hover { border-color: rgba(212,33,61,0.2); transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }
    .adv-icon {
      width: 52px; height: 52px; border-radius: 12px; flex-shrink: 0;
      background: linear-gradient(135deg, var(--brand), var(--brand-light));
      display: flex; align-items: center; justify-content: center;
      font-size: 24px; transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .adv-card:hover .adv-icon { transform: scale(1.15); box-shadow: 0 0 20px var(--brand-glow); }
    .adv-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
    .adv-desc { font-size: 14px; color: var(--gray-light); line-height: 1.7; }

    /* ===== CASES ===== */
    .cases-grid {
      display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
      margin-top: 48px;
    }
    .case-card {
      background: var(--dark-3); border: 1px solid rgba(255,255,255,0.06);
      border-radius: 16px; overflow: hidden; transition: all 0.4s ease;
    }
    .case-card:hover {
      transform: translateY(-4px); border-color: rgba(212,33,61,0.2);
      box-shadow: 0 16px 48px rgba(0,0,0,0.3);
    }
    .case-image {
      width: 100%; height: 220px; position: relative; overflow: hidden;
      background: var(--dark-4);
    }
    .case-image::after {
      content: ''; position: absolute; inset: 0; z-index: 2;
      background: linear-gradient(135deg, rgba(212,33,61,0.15) 0%, transparent 60%);
      opacity: 0; transition: opacity 0.4s ease;
    }
    .case-card:hover .case-image::after { opacity: 1; }
    .case-image-inner {
      width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
      position: relative; transition: transform 0.5s ease;
    }
    .case-card:hover .case-image-inner { transform: scale(1.06); }
    /* Case 1: AI Agent Dashboard */
    .case-image.case-ai .case-image-inner {
      background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    }
    .case-image.case-ai .mock-dashboard {
      width: 85%; height: 75%; background: rgba(255,255,255,0.06); border-radius: 8px;
      border: 1px solid rgba(255,255,255,0.1); padding: 12px; position: relative;
    }
    .case-image.case-ai .mock-sidebar {
      position: absolute; left: 0; top: 0; bottom: 0; width: 22%;
      background: rgba(212,33,61,0.15); border-radius: 8px 0 0 8px;
    }
    .case-image.case-ai .mock-sidebar-line {
      height: 6px; border-radius: 3px; margin: 8px 10px; background: rgba(255,255,255,0.15);
    }
    .case-image.case-ai .mock-sidebar-line:first-child { background: var(--brand); opacity: 0.6; }
    .case-image.case-ai .mock-content-area {
      margin-left: 25%; height: 100%; display: flex; flex-direction: column; gap: 8px;
    }
    .case-image.case-ai .mock-chart {
      flex: 1; background: rgba(255,255,255,0.04); border-radius: 6px; position: relative; overflow: hidden;
    }
    .case-image.case-ai .mock-bar {
      position: absolute; bottom: 0; width: 12%; border-radius: 3px 3px 0 0;
      background: linear-gradient(to top, var(--brand), var(--brand-light));
    }
    .case-image.case-ai .mock-bar:nth-child(1) { left: 8%; height: 45%; }
    .case-image.case-ai .mock-bar:nth-child(2) { left: 24%; height: 70%; }
    .case-image.case-ai .mock-bar:nth-child(3) { left: 40%; height: 55%; }
    .case-image.case-ai .mock-bar:nth-child(4) { left: 56%; height: 85%; }
    .case-image.case-ai .mock-bar:nth-child(5) { left: 72%; height: 60%; }
    .case-image.case-ai .mock-bar:nth-child(6) { left: 88%; height: 40%; }
    .case-image.case-ai .mock-topbar {
      height: 14px; background: rgba(255,255,255,0.06); border-radius: 4px; margin-bottom: 8px;
      display: flex; align-items: center; padding: 0 8px; gap: 6px;
    }
    .case-image.case-ai .mock-topbar-dot {
      width: 6px; height: 6px; border-radius: 50%; background: rgba(255,255,255,0.2);
    }
    .case-image.case-ai .mock-topbar-line {
      flex: 1; height: 4px; background: rgba(255,255,255,0.08); border-radius: 2px;
    }
    /* Case 2: Knowledge Base */
    .case-image.case-kb .case-image-inner {
      background: linear-gradient(135deg, #0d1b2a 0%, #1b2838 50%, #1a3a4a 100%);
    }
    .case-image.case-kb .mock-doc {
      width: 80%; height: 75%; background: rgba(255,255,255,0.05); border-radius: 8px;
      border: 1px solid rgba(255,255,255,0.08); padding: 14px; position: relative;
    }
    .case-image.case-kb .mock-doc-title {
      height: 10px; width: 60%; background: rgba(212,33,61,0.3); border-radius: 4px; margin-bottom: 12px;
    }
    .case-image.case-kb .mock-doc-line {
      height: 5px; border-radius: 3px; margin-bottom: 8px; background: rgba(255,255,255,0.1);
    }
    .case-image.case-kb .mock-doc-line:nth-child(odd) { width: 90%; }
    .case-image.case-kb .mock-doc-line:nth-child(even) { width: 75%; }
    .case-image.case-kb .mock-search-bar {
      position: absolute; bottom: 16px; left: 14px; right: 14px;
      height: 24px; background: rgba(212,33,61,0.15); border-radius: 12px;
      border: 1px solid rgba(212,33,61,0.3); display: flex; align-items: center; padding: 0 10px; gap: 6px;
    }
    .case-image.case-kb .mock-search-icon {
      width: 10px; height: 10px; border-radius: 50%; border: 1.5px solid var(--brand-light);
    }
    .case-image.case-kb .mock-search-text {
      flex: 1; height: 4px; background: rgba(255,255,255,0.15); border-radius: 2px;
    }
    .case-image.case-kb .mock-tag {
      display: inline-block; padding: 2px 6px; border-radius: 3px;
      background: rgba(212,33,61,0.2); margin-top: 10px;
    }
    .case-image.case-kb .mock-tag-line {
      width: 30px; height: 4px; background: var(--brand-light); border-radius: 2px; opacity: 0.5;
    }
    /* Case 3: Manufacturing */
    .case-image.case-mfg .case-image-inner {
      background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a2a1a 100%);
    }
    .case-image.case-mfg .mock-factory {
      width: 85%; height: 75%; position: relative;
    }
    .case-image.case-mfg .mock-conveyor {
      position: absolute; bottom: 20%; left: 5%; right: 5%; height: 8px;
      background: rgba(255,255,255,0.1); border-radius: 4px;
    }
    .case-image.case-mfg .mock-product {
      position: absolute; bottom: calc(20% + 8px); width: 24px; height: 24px;
      border-radius: 4px; border: 2px solid;
    }
    .case-image.case-mfg .mock-product:nth-child(2) { left: 15%; border-color: #28b894; background: rgba(40,184,148,0.2); }
    .case-image.case-mfg .mock-product:nth-child(3) { left: 35%; border-color: #28b894; background: rgba(40,184,148,0.2); }
    .case-image.case-mfg .mock-product:nth-child(4) { left: 55%; border-color: var(--brand); background: rgba(212,33,61,0.2); }
    .case-image.case-mfg .mock-product:nth-child(5) { left: 75%; border-color: #28b894; background: rgba(40,184,148,0.2); }
    .case-image.case-mfg .mock-scan-line {
      position: absolute; top: 10%; left: 53%; width: 30px; height: 60%;
      border: 2px solid var(--brand-light); border-radius: 4px; opacity: 0.6;
      animation: scanPulse 2s ease-in-out infinite;
    }
    @keyframes scanPulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 0.8; } }
    .case-image.case-mfg .mock-status-panel {
      position: absolute; top: 8%; right: 5%; width: 35%; background: rgba(0,0,0,0.4);
      border-radius: 6px; padding: 8px; border: 1px solid rgba(255,255,255,0.08);
    }
    .case-image.case-mfg .mock-status-line {
      height: 4px; border-radius: 2px; margin-bottom: 6px; background: rgba(255,255,255,0.1);
    }
    .case-image.case-mfg .mock-status-line:last-child { margin-bottom: 0; width: 60%; }
    .case-image.case-mfg .mock-status-ok {
      display: inline-block; width: 8px; height: 8px; border-radius: 50%;
      background: #28b894; margin-right: 4px; vertical-align: middle;
    }
    .case-image.case-mfg .mock-status-warn {
      display: inline-block; width: 8px; height: 8px; border-radius: 50%;
      background: var(--brand); margin-right: 4px; vertical-align: middle;
    }
    /* Case 4: Mini Program */
    .case-image.case-mp .case-image-inner {
      background: linear-gradient(135deg, #1a1025 0%, #251a35 50%, #1a2035 100%);
    }
    .case-image.case-mp .mock-phone {
      width: 45%; height: 80%; background: rgba(255,255,255,0.06); border-radius: 12px;
      border: 2px solid rgba(255,255,255,0.12); padding: 8px; position: relative;
      overflow: hidden;
    }
    .case-image.case-mp .mock-phone-notch {
      width: 40%; height: 6px; background: rgba(255,255,255,0.1); border-radius: 3px;
      margin: 0 auto 8px;
    }
    .case-image.case-mp .mock-phone-banner {
      height: 30%; background: linear-gradient(135deg, var(--brand), var(--brand-light));
      border-radius: 6px; margin-bottom: 8px; opacity: 0.6;
    }
    .case-image.case-mp .mock-phone-grid {
      display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
    }
    .case-image.case-mp .mock-phone-item {
      height: 28px; background: rgba(255,255,255,0.06); border-radius: 4px;
    }
    .case-image.case-mp .mock-phone-item:nth-child(1) { background: rgba(212,33,61,0.15); }
    .case-image.case-mp .mock-phone-nav {
      position: absolute; bottom: 8px; left: 8px; right: 8px;
      height: 16px; background: rgba(255,255,255,0.04); border-radius: 4px;
      display: flex; justify-content: space-around; align-items: center; padding: 0 6px;
    }
    .case-image.case-mp .mock-phone-nav-dot {
      width: 6px; height: 6px; border-radius: 50%; background: rgba(255,255,255,0.15);
    }
    .case-image.case-mp .mock-phone-nav-dot:first-child { background: var(--brand); }
    .case-image.case-mp .mock-phone-2 {
      width: 35%; height: 65%; background: rgba(255,255,255,0.04); border-radius: 10px;
      border: 1px solid rgba(255,255,255,0.08); padding: 6px;
      position: absolute; right: 8%; top: 15%; transform: rotate(6deg);
    }
    .case-image.case-mp .mock-phone-2 .mock-phone-banner { height: 25%; opacity: 0.4; }
    .case-image.case-mp .mock-phone-2 .mock-phone-item { height: 20px; }
    .case-body { padding: 24px; }
    .case-tag {
      display: inline-block; padding: 4px 10px; border-radius: 4px;
      font-size: 12px; font-weight: 600; margin-bottom: 12px;
      background: rgba(212,33,61,0.12); color: var(--brand-light);
    }
    .case-title { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
    .case-desc { font-size: 14px; color: var(--gray-light); line-height: 1.7; margin-bottom: 16px; }
    .case-metrics {
      display: flex; gap: 24px; padding-top: 16px;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .case-metric { text-align: left; }
    .case-metric-value {
      font-family: var(--font-en); font-size: 22px; font-weight: 800;
      color: var(--brand-light); line-height: 1;
    }
    .case-metric-label { font-size: 12px; color: var(--gray); margin-top: 4px; }

    /* ===== CTA ===== */
    .cta-section {
      padding: 100px 0; text-align: center; position: relative; overflow: hidden;
    }
    .cta-section::before {
      content: ''; position: absolute; top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      width: 600px; height: 600px; border-radius: 50%;
      background: radial-gradient(circle, var(--brand-glow) 0%, transparent 60%);
      pointer-events: none;
    }
    .cta-content { position: relative; z-index: 1; }
    .cta-title {
      font-size: clamp(28px, 4vw, 44px); font-weight: 800;
      margin-bottom: 16px;
    }
    .cta-desc {
      font-size: 16px; color: var(--gray-light); line-height: 1.7;
      max-width: 500px; margin: 0 auto 40px;
    }
    .cta-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
    @keyframes ctaPulse {
      0%, 100% { box-shadow: 0 0 16px rgba(212,33,61,0.3); }
      50% { box-shadow: 0 0 32px rgba(212,33,61,0.6), 0 0 60px rgba(212,33,61,0.2); }
    }
    .cta-actions .btn-primary { animation: ctaPulse 3s ease-in-out infinite; }
    .cta-actions .btn-primary:hover { animation: none; }

    /* ===== FOOTER ===== */
    .footer {
      background: var(--dark-2); border-top: 1px solid rgba(255,255,255,0.06);
      padding: 60px 0 24px;
    }
    .footer-grid {
      display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px; margin-bottom: 48px;
    }
    .footer-brand .logo { margin-bottom: 16px; }
    .footer-brand-desc { font-size: 14px; color: var(--gray); line-height: 1.7; margin-bottom: 20px; }
    .footer-contact-item {
      display: flex; align-items: center; gap: 8px;
      font-size: 13px; color: var(--gray-light); margin-bottom: 8px;
    }
    .footer-contact-item svg { width: 16px; height: 16px; color: var(--brand-light); flex-shrink: 0; }
    .footer-col-title {
      font-size: 14px; font-weight: 700; margin-bottom: 20px;
      color: var(--white);
    }
    .footer-links { display: flex; flex-direction: column; gap: 10px; }
    .footer-links a {
      font-size: 13px; color: var(--gray); transition: color 0.2s ease;
    }
    .footer-links a:hover { color: var(--brand-light); }
    .footer-bottom {
      padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.06);
      display: flex; justify-content: space-between; align-items: center;
      flex-wrap: wrap; gap: 16px;
    }
    .footer-copy { font-size: 13px; color: var(--gray); }
    .footer-icp { font-size: 13px; color: var(--gray); }
    .footer-icp a { color: var(--gray); transition: color 0.2s; }
    .footer-icp a:hover { color: var(--brand-light); }

    /* ===== SCROLL REVEAL ===== */
    .reveal {
      opacity: 0; transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    .reveal-d1 { transition-delay: 0.1s; }
    .reveal-d2 { transition-delay: 0.2s; }
    .reveal-d3 { transition-delay: 0.3s; }
    .reveal-d4 { transition-delay: 0.4s; }

    /* ===== MOBILE MENU ===== */
    .mobile-menu {
      display: none; position: fixed; top: 72px; left: 0; right: 0;
      background: rgba(10,10,15,0.98); backdrop-filter: blur(20px);
      padding: 24px; z-index: 999;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      flex-direction: column; gap: 16px;
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a {
      font-size: 16px; font-weight: 500; color: var(--gray-light);
      padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.04);
    }

    /* ===== RESPONSIVE ===== */
    @media (max-width: 1024px) {
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .process-timeline { grid-template-columns: repeat(2, 1fr); gap: 32px; }
      .process-timeline::before { display: none; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-links, .nav-cta { display: none; }
      .mobile-toggle { display: flex; }
      .about-grid { grid-template-columns: 1fr; gap: 32px; }
      .services-grid { grid-template-columns: 1fr; }
      .cases-grid { grid-template-columns: 1fr; }
      .adv-grid { grid-template-columns: 1fr; }
      .hero-stats { gap: 24px; flex-wrap: wrap; }
      .hero-stat-num { font-size: 28px; }
      .process-timeline { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .section { padding: 64px 0; }
    }
    @media (max-width: 480px) {
      .hero { padding: 100px 16px 60px; }
      .hero-actions { flex-direction: column; width: 100%; }
      .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
    }
    /* ===== BACK TO TOP ===== */
    .back-to-top {
      position: fixed; bottom: 96px; right: 24px; z-index: 999;
      width: 44px; height: 44px; border-radius: 50%;
      background: var(--brand); color: var(--white);
      display: flex; align-items: center; justify-content: center;
      opacity: 0; visibility: hidden; transform: translateY(12px);
      transition: all 0.3s ease; cursor: pointer; border: none;
      box-shadow: 0 4px 16px var(--brand-glow);
    }
    .back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
    .back-to-top:hover { background: var(--brand-light); transform: translateY(-3px); box-shadow: 0 6px 24px var(--brand-glow); }
    .back-to-top svg { width: 20px; height: 20px; }
  

    /* 字体栈覆盖：不依赖 Google Fonts，国内加载稳定 */
    :root {
      --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
                 "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
      --font-en: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }
    
/* ===== 新增页面组件（子页/内容页） ===== */
.page-hero {
  padding: 150px 0 64px;
  background:
    radial-gradient(900px 420px at 18% -8%, rgba(212,33,61,.20), transparent 62%),
    radial-gradient(700px 380px at 88% 0%, rgba(59,130,246,.14), transparent 60%),
    var(--dark);
  border-bottom: 1px solid var(--dark-3);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: 2.3rem; line-height: 1.28; font-weight: 800; margin-bottom: 16px; }
.page-hero h1 em { font-style: normal; color: var(--brand-light); }
.page-hero .lead { font-size: 1.02rem; color: var(--gray-light); max-width: 780px; line-height: 1.9; }
.page-hero .hero-actions { margin-top: 26px; }
.eyebrow {
  display: inline-block; font-size: .76rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--brand-light); border: 1px solid rgba(212,33,61,.4);
  background: rgba(212,33,61,.10); padding: 5px 13px; border-radius: 100px; margin-bottom: 16px;
}
.breadcrumb { font-size: .8rem; color: var(--gray); margin-bottom: 18px; }
.breadcrumb a { color: var(--gray-light); text-decoration: none; }
.breadcrumb a:hover { color: var(--brand-light); }
.breadcrumb span { margin: 0 7px; opacity: .5; }

/* 内容排版 */
.content { padding: 64px 0; }
.content h2 {
  font-size: 1.5rem; font-weight: 700; margin: 48px 0 16px; padding-left: 14px;
  border-left: 4px solid var(--brand); line-height: 1.45;
}
.content h2:first-child { margin-top: 0; }
.content h3 { font-size: 1.1rem; font-weight: 600; margin: 30px 0 10px; color: var(--white); }
.content p { color: var(--gray-light); font-size: .96rem; line-height: 1.95; margin-bottom: 14px; }
.content ul, .content ol { margin: 0 0 16px 22px; color: var(--gray-light); font-size: .96rem; line-height: 1.95; }
.content li { margin-bottom: 6px; }
.content strong { color: var(--white); }
.content a { color: var(--brand-light); text-decoration: none; border-bottom: 1px dotted rgba(212,33,61,.5); }
.answer {
  background: var(--dark-3); border-left: 3px solid var(--brand);
  border-radius: 0 10px 10px 0; padding: 18px 22px; margin: 0 0 28px;
  font-size: .98rem; line-height: 1.9; color: var(--white);
}

/* 网格 */
.grid-2, .grid-3, .grid-4 { display: grid; gap: 18px; margin: 22px 0; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.panel {
  background: var(--dark-2); border: 1px solid var(--dark-3);
  border-radius: 12px; padding: 22px; transition: .25s;
}
.panel:hover { border-color: rgba(212,33,61,.45); transform: translateY(-3px); }
.panel h4 { font-size: 1.02rem; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.panel p { font-size: .88rem; color: var(--gray); line-height: 1.8; margin: 0; }
.panel .ic {
  width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0;
  background: rgba(212,33,61,.14); color: var(--brand-light);
  display: flex; align-items: center; justify-content: center; font-size: 1rem;
}
.panel ul { margin: 8px 0 0 18px; font-size: .86rem; color: var(--gray); line-height: 1.85; }

/* 表格 */
.tbl-wrap { overflow-x: auto; margin: 20px 0; border: 1px solid var(--dark-3); border-radius: 10px; }
table.tbl { width: 100%; border-collapse: collapse; font-size: .88rem; min-width: 560px; }
table.tbl th {
  background: var(--dark-3); color: var(--white); text-align: left;
  padding: 12px 14px; font-weight: 600; border-bottom: 1px solid var(--dark-4); white-space: nowrap;
}
table.tbl td { padding: 12px 14px; border-bottom: 1px solid var(--dark-3); color: var(--gray-light); vertical-align: top; }
table.tbl tr:last-child td { border-bottom: none; }
table.tbl tr:hover td { background: rgba(255,255,255,.02); }
table.tbl td b, table.tbl td strong { color: var(--white); }
.yes { color: #34D399; font-weight: 600; }
.no { color: #F87171; }

/* 价格卡 */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 24px 0; }
@media (max-width: 900px) { .price-grid { grid-template-columns: 1fr; } }
.price-card {
  background: var(--dark-2); border: 1px solid var(--dark-3); border-radius: 14px;
  padding: 26px 22px; position: relative; display: flex; flex-direction: column;
}
.price-card.featured { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand), 0 12px 40px rgba(212,33,61,.16); }
.price-card .flag {
  position: absolute; top: -11px; left: 22px; background: var(--brand); color: #fff;
  font-size: .72rem; padding: 3px 12px; border-radius: 100px; font-weight: 600;
}
.price-card h3 { font-size: 1.05rem; margin-bottom: 4px; }
.price-card .sub { font-size: .8rem; color: var(--gray); margin-bottom: 16px; }
.price-card .amount { font-size: 2.1rem; font-weight: 800; line-height: 1.1; }
.price-card .amount small { font-size: .8rem; font-weight: 500; color: var(--gray); }
.price-card .annual { font-size: .84rem; color: var(--brand-light); margin-top: 6px; }
.price-card ul { list-style: none; margin: 18px 0 0; padding: 0; }
.price-card li { font-size: .86rem; color: var(--gray-light); padding-left: 20px; position: relative; margin-bottom: 8px; line-height: 1.7; }
.price-card li::before { content: '✓'; position: absolute; left: 0; color: var(--brand-light); font-weight: 700; }
.price-card .note { margin-top: auto; padding-top: 18px; font-size: .78rem; color: var(--gray); }

/* FAQ */
.faq-item { border: 1px solid var(--dark-3); border-radius: 10px; margin-bottom: 10px; background: var(--dark-2); overflow: hidden; }
.faq-item summary {
  cursor: pointer; padding: 16px 20px; font-size: .98rem; font-weight: 600;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 14px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; color: var(--brand-light); font-size: 1.3rem; font-weight: 400; flex-shrink: 0; }
.faq-item[open] summary::after { content: '−'; }
.faq-item summary:hover { color: var(--brand-light); }
.faq-item .faq-a {
  padding: 0 20px 18px; font-size: .92rem; color: var(--gray-light); line-height: 1.95;
  border-top: 1px solid var(--dark-3); padding-top: 14px;
}
.faq-item .faq-a p { margin-bottom: 10px; }
.faq-item .faq-a p:last-child { margin-bottom: 0; }
.faq-cat { font-size: .8rem; color: var(--brand-light); letter-spacing: .1em; margin: 30px 0 12px; font-weight: 600; }

/* 统计条 */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 24px 0; }
@media (max-width: 760px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }
.stat-box { background: var(--dark-2); border: 1px solid var(--dark-3); border-radius: 12px; padding: 20px 14px; text-align: center; }
.stat-box .n { font-size: 1.85rem; font-weight: 800; color: var(--brand-light); line-height: 1.2; }
.stat-box .n small { font-size: .78rem; font-weight: 500; color: var(--gray); }
.stat-box .l { font-size: .78rem; color: var(--gray); margin-top: 4px; }

/* 提示条 */
.note-box {
  background: rgba(212,33,61,.08); border: 1px solid rgba(212,33,61,.28);
  border-radius: 10px; padding: 16px 20px; margin: 20px 0; font-size: .9rem; color: var(--gray-light); line-height: 1.85;
}
.note-box b { color: var(--brand-light); }
.note-box.blue { background: rgba(59,130,246,.08); border-color: rgba(59,130,246,.3); }
.note-box.blue b { color: #7CB0FF; }

/* 场景卡 */
.scenario { background: var(--dark-2); border: 1px solid var(--dark-3); border-radius: 12px; padding: 20px; }
.scenario .no { font-size: .74rem; color: var(--brand-light); letter-spacing: .12em; font-weight: 700; }
.scenario h4 { font-size: 1rem; margin: 6px 0 8px; }
.scenario p { font-size: .86rem; color: var(--gray); line-height: 1.8; margin: 0 0 10px; }
.scenario .kpi { font-size: .8rem; color: #34D399; font-weight: 600; }

/* 目录 */
.toc-box { background: var(--dark-2); border: 1px solid var(--dark-3); border-radius: 12px; padding: 18px 22px; margin: 24px 0; }
.toc-box h4 { font-size: .9rem; margin-bottom: 10px; color: var(--gray); letter-spacing: .05em; }
.toc-box ol { margin: 0 0 0 20px; font-size: .9rem; }
.toc-box li { margin-bottom: 5px; }
.toc-box a { color: var(--gray-light); text-decoration: none; }
.toc-box a:hover { color: var(--brand-light); }

/* CTA 带 */
.band {
  background: linear-gradient(120deg, rgba(212,33,61,.16), rgba(59,130,246,.10));
  border: 1px solid rgba(212,33,61,.3); border-radius: 14px;
  padding: 34px 30px; text-align: center; margin: 46px 0 0;
}
.band h3 { font-size: 1.3rem; margin-bottom: 10px; }
.band p { color: var(--gray-light); font-size: .94rem; margin-bottom: 20px; }

/* 子页导航高亮修正 */
.nav-links a.active { color: var(--brand-light); }