/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-dark: #0A3A85;
      --primary-light: #EBF2FD;
      --energy-green: #00D084;
      --energy-orange: #FF6B00;
      --dark-bg: #0B132B;
      --dark-card: #1C2541;
      --light-bg: #F8FAFC;
      --white: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --shadow-sm: 0 2px 8px rgba(15, 82, 186, 0.04);
      --shadow-md: 0 8px 24px -6px rgba(15, 82, 186, 0.08);
      --shadow-lg: 0 16px 32px -10px rgba(15, 82, 186, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-family: 'Inter', system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--light-bg);
      color: var(--text-body);
      line-height: 1.75;
      font-size: 16px;
    }

    body {
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* Top Bar */
    .top-bar {
      background: #070D1E;
      color: #94A3B8;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .top-bar i {
      color: var(--energy-green);
      margin-right: 6px;
    }

    /* Main Nav */
    .header-nav {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
    }
    .brand-logo .logo-icon {
      width: 42px;
      height: 42px;
      background: linear-gradient(135deg, var(--primary), #2563EB);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-md);
      font-size: 1.2rem;
      box-shadow: 0 4px 10px rgba(15, 82, 186, 0.25);
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      font-weight: 500;
      color: var(--text-main);
      font-size: 0.95rem;
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: none;
      transition: var(--transition);
      line-height: 1.2;
    }
    .btn-primary {
      background: var(--primary);
      color: var(--white);
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.2);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(15, 82, 186, 0.3);
    }
    .btn-accent {
      background: var(--energy-orange);
      color: var(--white);
      box-shadow: 0 4px 12px rgba(255, 107, 0, 0.2);
    }
    .btn-accent:hover {
      background: #E05E00;
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(255, 107, 0, 0.3);
    }
    .btn-outline {
      background: transparent;
      color: var(--white);
      border: 1px solid rgba(255, 255, 255, 0.4);
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--white);
    }
    .btn-light {
      background: var(--white);
      color: var(--primary);
      font-weight: 600;
    }
    .btn-light:hover {
      background: #F1F5F9;
      transform: translateY(-2px);
    }

    /* Section Styles */
    section {
      padding: 90px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 56px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 5px 14px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* Hero Section (Blueprint: Countdown Ring + Sell Points + Demo Order) */
    .hero-section {
      background: linear-gradient(rgba(11, 19, 43, 0.92), rgba(15, 82, 186, 0.88)), url('/assets/images/4a55c183e9ba5788.jpg') center/cover no-repeat;
      color: var(--white);
      padding: 100px 0 120px 0;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 50px;
      align-items: center;
    }
    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.12);
      padding: 6px 16px;
      border-radius: var(--radius-full);
      border: 1px solid rgba(255, 255, 255, 0.2);
      margin-bottom: 24px;
      font-size: 0.85rem;
    }
    .hero-badge-wrap .dot {
      width: 8px;
      height: 8px;
      background: var(--energy-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--energy-green);
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 22px;
      letter-spacing: -0.8px;
    }
    .hero-intro {
      font-size: 1.1rem;
      color: #CBD5E1;
      margin-bottom: 30px;
      line-height: 1.85;
      text-align: justify;
    }
    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 36px;
    }
    .hero-tag-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.08);
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .hero-tag-item i {
      color: var(--energy-green);
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* Hero Right Ring & Reserve Box */
    .hero-reserve-box {
      background: rgba(255, 255, 255, 0.06);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
      text-align: center;
    }
    .countdown-ring-wrap {
      position: relative;
      width: 140px;
      height: 140px;
      margin: 0 auto 20px auto;
    }
    .countdown-svg {
      transform: rotate(-90deg);
      width: 140px;
      height: 140px;
    }
    .countdown-circle-bg {
      fill: none;
      stroke: rgba(255, 255, 255, 0.1);
      stroke-width: 8;
    }
    .countdown-circle-val {
      fill: none;
      stroke: var(--energy-green);
      stroke-width: 8;
      stroke-dasharray: 377;
      stroke-dashoffset: 75;
      stroke-linecap: round;
    }
    .countdown-text {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--white);
    }
    .countdown-text span {
      display: block;
      font-size: 0.75rem;
      color: #94A3B8;
      font-weight: 400;
    }
    .reserve-form {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-top: 10px;
    }
    .reserve-input {
      width: 100%;
      padding: 12px 16px;
      background: rgba(255, 255, 255, 0.95);
      border: 1px solid transparent;
      border-radius: var(--radius-sm);
      color: var(--text-main);
      font-size: 0.95rem;
      outline: none;
    }
    .reserve-input:focus {
      border-color: var(--primary);
    }

    /* 2. Pain Points */
    .pain-section {
      background: var(--white);
    }
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .pain-card {
      background: var(--light-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      transition: var(--transition);
      position: relative;
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .pain-alert {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #DC2626;
      background: #FEF2F2;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      font-size: 0.8rem;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .pain-card h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 600;
    }
    .pain-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 3. Product Architecture */
    .arch-section {
      background: #F1F5F9;
    }
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .arch-image-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .arch-metrics-badge {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      color: var(--white);
      padding: 12px 20px;
      border-radius: var(--radius-md);
      display: flex;
      gap: 20px;
      font-size: 0.85rem;
    }
    .arch-metrics-badge strong {
      color: var(--energy-green);
      font-size: 1.1rem;
    }
    .arch-feature-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin-top: 24px;
    }
    .arch-item {
      display: flex;
      gap: 16px;
      background: var(--white);
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .arch-item-icon {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      flex-shrink: 0;
    }
    .arch-item-content h4 {
      font-size: 1.05rem;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .arch-item-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 4. Strengths Grid */
    .strengths-section {
      background: var(--white);
    }
    .strengths-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .strength-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      transition: var(--transition);
      position: relative;
    }
    .strength-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary);
      box-shadow: 0 12px 24px -10px rgba(15, 82, 186, 0.15);
    }
    .strength-icon {
      width: 52px;
      height: 52px;
      background: linear-gradient(135deg, var(--primary-light), #DBEAFE);
      color: var(--primary);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }
    .strength-card h3 {
      font-size: 1.2rem;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .strength-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 5. Featured Solutions */
    .solutions-section {
      background: var(--light-bg);
    }
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      align-items: stretch;
    }
    .solution-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      position: relative;
    }
    .solution-card.featured {
      border: 2px solid var(--primary);
      transform: scale(1.03);
      box-shadow: var(--shadow-lg);
    }
    .solution-ribbon {
      position: absolute;
      top: 16px;
      right: 16px;
      background: var(--primary);
      color: var(--white);
      padding: 4px 12px;
      font-size: 0.75rem;
      font-weight: 600;
      border-radius: var(--radius-full);
    }
    .solution-image {
      height: 200px;
      overflow: hidden;
    }
    .solution-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .solution-card:hover .solution-image img {
      transform: scale(1.05);
    }
    .solution-body {
      padding: 30px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .solution-body h3 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .solution-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.7;
    }
    .solution-list {
      list-style: none;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .solution-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.88rem;
      color: var(--text-body);
      margin-bottom: 10px;
    }
    .solution-list li i {
      color: var(--energy-green);
      font-size: 0.9rem;
    }

    /* 6. Dark Concept & Methodology */
    .methodology-section {
      background: var(--dark-bg);
      color: var(--white);
      padding: 100px 0;
    }
    .methodology-section .section-title {
      color: var(--white);
    }
    .methodology-section .section-desc {
      color: #94A3B8;
    }
    .method-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 50px;
    }
    .method-step-card {
      background: var(--dark-card);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 30px 20px;
      position: relative;
    }
    .step-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.1);
      position: absolute;
      top: 16px;
      right: 20px;
    }
    .method-step-card h4 {
      font-size: 1.15rem;
      color: var(--white);
      margin-bottom: 12px;
    }
    .method-step-card p {
      font-size: 0.88rem;
      color: #94A3B8;
      line-height: 1.7;
    }

    /* 7. Case Studies */
    .cases-section {
      background: var(--white);
    }
    .case-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
      margin-bottom: 60px;
    }
    .case-row:nth-child(even) {
      direction: rtl;
    }
    .case-row:nth-child(even) .case-content {
      direction: ltr;
    }
    .case-image {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .case-image img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }
    .case-content h3 {
      font-size: 1.5rem;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .case-content p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.8;
    }
    .case-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      background: var(--light-bg);
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .case-stat-item h5 {
      font-size: 1.3rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 4px;
    }
    .case-stat-item span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 8. Metrics Bar */
    .metrics-section {
      background: linear-gradient(135deg, var(--primary), #1E40AF);
      color: var(--white);
      padding: 60px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .metric-val {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .metric-label {
      font-size: 0.95rem;
      color: #BFDBFE;
    }

    /* 9. Testimonials */
    .testimonials-section {
      background: var(--light-bg);
    }
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .testimonial-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .rating-stars {
      color: #FBBF24;
      margin-bottom: 16px;
      font-size: 0.9rem;
    }
    .testimonial-quote {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 24px;
      font-style: italic;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    .user-info h5 {
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .user-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 10. Audience Matrix */
    .audience-section {
      background: var(--white);
    }
    .audience-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .audience-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      background: var(--light-bg);
      transition: var(--transition);
    }
    .audience-card:hover {
      border-color: var(--primary);
      background: var(--white);
      box-shadow: var(--shadow-md);
    }
    .audience-icon {
      width: 60px;
      height: 60px;
      background: var(--white);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 18px auto;
      font-size: 1.5rem;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .audience-card h4 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .audience-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 11. Insights & Whitepapers */
    .insights-section {
      background: var(--light-bg);
    }
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .insight-card {
      background: var(--white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .insight-card:hover {
      box-shadow: var(--shadow-md);
    }
    .insight-img-wrap {
      height: 180px;
      overflow: hidden;
    }
    .insight-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 24px;
    }
    .insight-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .insight-body h4 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .insight-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
    }
    .insight-link {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 12. FAQ Accordion */
    .faq-section {
      background: var(--white);
    }
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      background: var(--light-bg);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      font-size: 1.05rem;
      color: var(--text-main);
      transition: var(--transition);
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      display: none;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      border-top: 1px solid transparent;
    }
    .faq-item.active {
      background: var(--white);
      border-color: var(--primary);
    }
    .faq-item.active .faq-answer {
      display: block;
      border-top-color: var(--border-color);
      padding-top: 16px;
    }
    .faq-item.active .faq-question i {
      transform: rotate(180deg);
      color: var(--primary);
    }

    /* 13. CTA Section */
    .cta-section {
      background: linear-gradient(135deg, var(--dark-bg), #0F2A66);
      color: var(--white);
      padding: 80px 0;
      text-align: center;
    }
    .cta-card {
      max-width: 800px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 50px 30px;
    }
    .cta-card h2 {
      font-size: 2.2rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .cta-card p {
      font-size: 1.05rem;
      color: #CBD5E1;
      margin-bottom: 30px;
      line-height: 1.7;
    }
    .cta-form {
      display: flex;
      max-width: 500px;
      margin: 0 auto 20px auto;
      gap: 10px;
    }
    .cta-input {
      flex-grow: 1;
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      border: none;
      font-size: 0.95rem;
      outline: none;
    }

    /* Footer */
    .site-footer {
      background: #070D1E;
      color: #94A3B8;
      padding: 70px 0 24px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h4 {
      font-size: 1.3rem;
      color: var(--white);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand p {
      line-height: 1.8;
      margin-bottom: 20px;
      font-size: 0.88rem;
    }
    .footer-col h5 {
      color: var(--white);
      font-size: 1rem;
      margin-bottom: 20px;
      position: relative;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--energy-green);
    }
    .footer-contact li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 12px;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-grid, .arch-grid, .case-row, .case-row:nth-child(even) {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .strengths-grid, .solutions-grid, .testimonial-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pain-grid, .audience-grid, .method-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .solution-card.featured {
        transform: none;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links, .nav-action .btn {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .strengths-grid, .solutions-grid, .testimonial-grid, .insights-grid, .pain-grid, .audience-grid, .method-steps, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-form {
        flex-direction: column;
      }
      .case-stats {
        grid-template-columns: 1fr;
      }
    }

    /* Mobile Drawer */
    .mobile-drawer {
      position: fixed;
      top: 0;
      right: -100%;
      width: 280px;
      height: 100vh;
      background: var(--white);
      z-index: 1001;
      padding: 30px 20px;
      box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
      transition: var(--transition);
    }
    .mobile-drawer.open {
      right: 0;
    }
    .drawer-close {
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      float: right;
    }
    .drawer-nav-list {
      list-style: none;
      margin-top: 40px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .drawer-nav-list a {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--text-main);
    }