/* roulang page: index */
:root {
      --primary-dark: #0A192F;
      --deep-navy: #070F1E;
      --accent-cyan: #00E599;
      --accent-orange: #FF5722;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.1);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 12px 28px -4px rgba(15, 23, 42, 0.12);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    a { text-decoration: none; color: inherit; transition: var(--transition); }
    img { max-width: 100%; height: auto; display: block; }
    ul { list-style: none; }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部信息条 */
    .top-bar {
      background-color: var(--deep-navy);
      color: var(--text-light);
      font-size: 12px;
      padding: 8px 0;
      border-bottom: 1px solid var(--border-dark);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-status {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-cyan);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-cyan);
    }

    /* 主导航 */
    .main-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }
    .logo-badge {
      background: var(--primary-dark);
      color: var(--accent-cyan);
      font-size: 11px;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 700;
      border: 1px solid rgba(0, 229, 153, 0.3);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 30px;
    }
    .nav-menu a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
    }
    .nav-menu a:hover {
      color: var(--primary-dark);
    }
    .nav-cta {
      background: var(--primary-dark);
      color: var(--accent-cyan);
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 700;
      border: 1px solid var(--accent-cyan);
    }
    .nav-cta:hover {
      background: var(--accent-cyan);
      color: var(--primary-dark);
      transform: translateY(-2px);
    }

    /* 通用板块与排版 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-title-wrap {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1px;
      color: var(--accent-cyan);
      background: rgba(10, 25, 47, 0.06);
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1.35;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块一：Hero 工业参数首屏 */
    .hero-section {
      position: relative;
      background: var(--primary-dark) url('/assets/images/80a71268fee76eaf.png') center/cover no-repeat;
      color: #FFFFFF;
      padding: 100px 0 80px 0;
      overflow: hidden;
    }
    .hero-overlay {
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: linear-gradient(135deg, rgba(7, 15, 30, 0.94) 0%, rgba(10, 25, 47, 0.88) 100%);
      z-index: 1;
    }
    .hero-container {
      position: relative;
      z-index: 2;
    }
    .hero-badge-top {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(0, 229, 153, 0.3);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      color: var(--accent-cyan);
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 46px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      color: var(--accent-cyan);
    }
    .hero-lead {
      font-size: 17px;
      color: #CBD5E1;
      max-width: 820px;
      line-height: 1.8;
      margin-bottom: 40px;
    }
    .hero-btn-group {
      display: flex;
      gap: 16px;
      align-items: center;
      margin-bottom: 60px;
    }
    .btn-main {
      background: var(--accent-cyan);
      color: var(--primary-dark);
      font-weight: 700;
      padding: 15px 36px;
      border-radius: var(--radius-sm);
      font-size: 16px;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 16px rgba(0, 229, 153, 0.3);
    }
    .btn-main:hover {
      background: #00ffaa;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 229, 153, 0.5);
    }
    .btn-outline {
      background: transparent;
      color: #FFFFFF;
      font-weight: 600;
      padding: 15px 32px;
      border-radius: var(--radius-sm);
      font-size: 16px;
      border: 1px solid rgba(255, 255, 255, 0.25);
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #FFFFFF;
    }

    /* 工业参数网格条 */
    .hero-params-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      background: rgba(15, 23, 42, 0.65);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px 30px;
      gap: 20px;
    }
    .param-item {
      border-right: 1px solid var(--border-dark);
      padding-right: 15px;
    }
    .param-item:last-child {
      border-right: none;
    }
    .param-value {
      font-size: 32px;
      font-weight: 800;
      color: var(--accent-cyan);
      font-family: monospace, sans-serif;
    }
    .param-unit {
      font-size: 14px;
      font-weight: normal;
      color: #94A3B8;
      margin-left: 4px;
    }
    .param-label {
      font-size: 13px;
      color: #94A3B8;
      margin-top: 4px;
    }

    /* 板块二：核心架构与产品介绍 */
    .about-section {
      background-color: var(--bg-white);
    }
    .about-split {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 50px;
      align-items: center;
    }
    .about-img-box {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }
    .tech-specs-bar {
      margin-top: 30px;
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      display: flex;
      justify-content: space-between;
      gap: 15px;
    }
    .spec-node {
      font-size: 13px;
      color: var(--text-muted);
    }
    .spec-node strong {
      display: block;
      color: var(--primary-dark);
      font-size: 14px;
      margin-bottom: 2px;
    }

    /* 板块三：核心管理优势矩阵 */
    .features-section {
      background-color: var(--bg-light);
    }
    .grid-features {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--accent-cyan);
    }
    .feature-icon-badge {
      width: 44px;
      height: 44px;
      background: rgba(10, 25, 47, 0.05);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--primary-dark);
      margin-bottom: 18px;
    }
    .feature-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }
    .feature-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块四：热门产品与系统模块 */
    .modules-section {
      background-color: var(--bg-white);
    }
    .modules-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .module-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: var(--bg-white);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .module-card-img {
      height: 200px;
      object-fit: cover;
      width: 100%;
    }
    .module-card-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .module-badge {
      display: inline-block;
      font-size: 12px;
      color: #0369a1;
      background: #e0f2fe;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
      margin-bottom: 12px;
      align-self: flex-start;
    }
    .module-name {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 10px;
    }
    .module-intro {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .module-checklist {
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .module-checklist li {
      font-size: 13px;
      color: var(--text-main);
      margin-bottom: 8px;
      position: relative;
      padding-left: 18px;
    }
    .module-checklist li::before {
      content: "✔";
      position: absolute;
      left: 0;
      color: var(--accent-cyan);
      font-weight: bold;
    }

    /* 板块五：深色案例中枢与管理理念区 */
    .philosophy-section {
      background-color: var(--deep-navy);
      color: #FFFFFF;
      background-image: linear-gradient(rgba(7, 15, 30, 0.95), rgba(7, 15, 30, 0.95)), url('/assets/images/cd9cd230140a2d9d.jpg');
      background-size: cover;
      background-position: center;
    }
    .philosophy-section .section-title {
      color: #FFFFFF;
    }
    .swimlane-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .swimlane-col {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .swimlane-step {
      font-size: 12px;
      color: var(--accent-cyan);
      font-weight: 700;
      margin-bottom: 10px;
      display: block;
    }
    .swimlane-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: #F8FAFC;
    }
    .swimlane-desc {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块六：典型赛事用户故事与场景落地 */
    .scenarios-section {
      background-color: var(--bg-light);
    }
    .scenario-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      margin-bottom: 30px;
    }
    .scenario-item:last-child {
      margin-bottom: 0;
    }
    .scenario-item.reverse {
      grid-template-columns: 1fr 1fr;
      direction: rtl;
    }
    .scenario-item.reverse > div {
      direction: ltr;
    }
    .scenario-img {
      border-radius: var(--radius-sm);
      width: 100%;
      height: 280px;
      object-fit: cover;
    }
    .scenario-title {
      font-size: 22px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }
    .scenario-contrast {
      margin: 16px 0;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      font-size: 13px;
    }
    .contrast-box {
      padding: 10px 14px;
      border-radius: var(--radius-sm);
    }
    .contrast-bad {
      background: #fef2f2;
      border: 1px solid #fecaca;
      color: #991b1b;
    }
    .contrast-good {
      background: #f0fdf4;
      border: 1px solid #bbf7d0;
      color: #166534;
    }

    /* 板块七：关键效能数据统计条 */
    .metrics-section {
      background: linear-gradient(135deg, var(--primary-dark) 0%, #1E293B 100%);
      color: #FFFFFF;
      padding: 60px 0;
    }
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .metric-big-num {
      font-size: 40px;
      font-weight: 800;
      color: var(--accent-cyan);
      font-family: monospace, sans-serif;
      margin-bottom: 6px;
    }
    .metric-title {
      font-size: 16px;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 板块八：赛事主办方口碑与用户评价 */
    .reviews-section {
      background-color: var(--bg-white);
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .stars {
      color: #f59e0b;
      margin-bottom: 12px;
      font-size: 14px;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #cbd5e1;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary-dark);
      font-size: 16px;
    }
    .reviewer-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--primary-dark);
    }
    .reviewer-org {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块九：新闻与行业资讯速递 */
    .news-section {
      background-color: var(--bg-light);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-cover {
      height: 180px;
      object-fit: cover;
      width: 100%;
    }
    .news-body {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-excerpt {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 板块十：技术与运营异议拆解 FAQ */
    .faq-section {
      background-color: var(--bg-white);
    }
    .faq-wrapper {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      background: var(--bg-light);
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--primary-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-arrow {
      transition: transform 0.25s ease;
      font-size: 12px;
      color: var(--text-muted);
    }
    .faq-answer {
      padding: 0 24px 18px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }

    /* 板块十一：服务保障与交付承诺条 */
    .guarantee-section {
      background-color: #F1F5F9;
      padding: 50px 0;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-box {
      display: flex;
      align-items: center;
      gap: 15px;
    }
    .guarantee-icon {
      width: 42px;
      height: 42px;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--accent-orange);
      flex-shrink: 0;
    }
    .guarantee-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary-dark);
    }
    .guarantee-desc {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块十二：底部主转化区 */
    .convert-section {
      background: var(--primary-dark) url('/assets/images/27e877754e8d3596.png') center/cover no-repeat;
      color: #FFFFFF;
      position: relative;
    }
    .convert-overlay {
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(7, 15, 30, 0.92);
      z-index: 1;
    }
    .convert-container {
      position: relative;
      z-index: 2;
      max-width: 760px;
      margin: 0 auto;
      text-align: center;
    }
    .convert-title {
      font-size: 34px;
      fontweight: 800;
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .convert-desc {
      font-size: 15px;
      color: #CBD5E1;
      margin-bottom: 36px;
      line-height: 1.7;
    }
    .convert-form {
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 30px;
      text-align: left;
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 13px;
      color: #E2E8F0;
      font-weight: 600;
    }
    .form-group input,
    .form-group select {
      height: 44px;
      background: rgba(15, 23, 42, 0.7);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      padding: 0 14px;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-group input:focus,
    .form-group select:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 2px rgba(0, 229, 153, 0.2);
    }
    .form-group select option {
      background-color: var(--primary-dark);
      color: #FFFFFF;
    }
    .btn-submit {
      width: 100%;
      height: 48px;
      background: var(--accent-orange);
      color: #FFFFFF;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 4px 14px rgba(255, 87, 34, 0.4);
    }
    .btn-submit:hover {
      background: #f4511e;
      transform: translateY(-2px);
    }
    .form-privacy {
      font-size: 12px;
      color: #94A3B8;
      text-align: center;
      margin-top: 14px;
    }

    /* 移动端吸底固定转化条 */
    .mobile-sticky-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(10, 25, 47, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid var(--border-dark);
      padding: 10px 16px;
      z-index: 9999;
      justify-content: space-between;
      align-items: center;
      box-sizing: border-box;
      padding-bottom: calc(10px + env(safe-area-inset-bottom));
    }
    .mobile-phone-link {
      display: flex;
      flex-direction: column;
      color: #FFFFFF;
      font-size: 12px;
    }
    .mobile-phone-link strong {
      color: var(--accent-cyan);
      font-size: 14px;
    }
    .mobile-cta-btn {
      background: var(--accent-orange);
      color: #FFFFFF;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 700;
      min-height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    /* 页脚 */
    .site-footer {
      background-color: var(--deep-navy);
      color: #94A3B8;
      padding: 60px 0 30px 0;
      border-top: 1px solid var(--border-dark);
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.2fr 1.3fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand-title {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 14px;
    }
    .footer-brand-desc {
      line-height: 1.8;
      margin-bottom: 16px;
    }
    .footer-col-title {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 14px;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links a:hover {
      color: var(--accent-cyan);
    }
    .trust-signals p {
      margin-bottom: 8px;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid var(--border-dark);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 38px; }
      .grid-features,
      .modules-grid,
      .swimlane-container,
      .reviews-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      body { padding-bottom: 64px; }
      .mobile-sticky-bar { display: flex; }
      .top-bar { display: none; }
      .nav-menu, .nav-cta { display: none; }
      .nav-inner { height: 60px; }
      section { padding: 50px 0; }
      .hero-section { padding: 60px 0 50px 0; }
      .hero-title { font-size: 28px; }
      .hero-lead { font-size: 15px; }
      .hero-btn-group { flex-direction: column; align-items: stretch; gap: 12px; margin-bottom: 30px; }
      .hero-params-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 16px; }
      .param-item { border-right: none; }
      .param-value { font-size: 24px; }
      .about-split { grid-template-columns: 1fr; gap: 24px; }
      .tech-specs-bar { flex-direction: column; gap: 10px; }
      .grid-features,
      .modules-grid,
      .swimlane-container,
      .reviews-grid,
      .news-grid,
      .metrics-row,
      .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .scenario-item,
      .scenario-item.reverse {
        grid-template-columns: 1fr;
        gap: 20px;
        direction: ltr;
      }
      .form-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
    }