/* ===== Oem Page Styles ===== */
/* Auto-extracted from src/oem.html */

/* Page specific styles */
    .hero {
      height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
      background: #000;
    }
    .hero-bg {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background-image: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('https://sc02.alicdn.com/kf/A13d9f2690f204d3585ba48990bfeae85z.png');
      background-size: cover;
      background-position: center;
      transform: scale(1.1);
      animation: heroZoomOut 10s forwards ease-out;
    }
    .hero-bg::after {
      content: '';
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background-image: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.4) 100%),
                        linear-gradient(rgba(0,102,255,0.05) 1px, transparent 1px),
                        linear-gradient(90deg, rgba(0,102,255,0.05) 1px, transparent 1px);
      background-size: 100% 100%, 40px 40px, 40px 40px;
      z-index: 1;
    }
    @keyframes heroZoomOut {
      to { transform: scale(1); }
    }
    
    /* Unique Tech Scan Effect */
    .hero-content h1 {
      position: relative;
      display: inline-block;
      overflow: hidden;
      color: transparent;
      -webkit-text-stroke: 1px rgba(255,255,255,0.3);
      animation: textFill 1s 0.2s forwards ease-out;
      margin-top: -80px; /* 大标题往上移 */
      margin-bottom: 60px; /* 增加与副标题的间距，确保副标题位置相对稳定 */
    }
    .hero-content h1::after {
      content: '';
      position: absolute;
      top: 0; left: -100%;
      width: 100%; height: 100%;
      background: linear-gradient(90deg, transparent, rgba(0,102,255,0.4), transparent);
      animation: scanSweep 2s 1s infinite linear;
    }
    @keyframes textFill {
      to { color: #fff; -webkit-text-stroke: 0px transparent; }
    }
    @keyframes scanSweep {
      0% { left: -100%; }
      100% { left: 100%; }
    }

    .hero-content .subtitle {
      opacity: 0;
      transform: translateY(20px);
      animation: slideInUp 0.6s 0.4s forwards ease-out;
      color: #fff !important; /* 强制白色 */
      margin-bottom: 100px; /* 大幅增加与按钮的间距，让按钮往下移 */
      font-size: 1.25rem; /* 增大字号，与其他副标题保持一致 */
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.6;
    }
    .hero-buttons {
      opacity: 0;
      animation: fadeIn 0.6s 0.6s forwards;
      margin-top: 40px; 
    }
    @keyframes fadeIn {
      to { opacity: 1; }
    }
    .logo-wall {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 40px;
      align-items: center;
      margin-top: 48px;
    }
    .logo-item {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--gray-400);
      filter: grayscale(1);
      transition: var(--transition);
      opacity: 0.7;
    }
    .logo-item:hover {
      filter: grayscale(0);
      opacity: 1;
      color: var(--dark);
    }
    .step-number {
      width: 40px; height: 40px;
      background: var(--primary);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .revenue-note {
      margin-top: 40px;
      padding: 24px;
      background: var(--primary-bg);
      border-left: 4px solid var(--primary);
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
    }
    .revenue-note p {
      color: var(--primary-dark);
      font-weight: 500;
      margin: 0;
    }
    .icon { width: 1em; height: 1em; display: inline-block; vertical-align: middle; }
    /* Advantage Section Adjustments */
    #section-advantages {
      height: 100vh;
      display: flex;
      align-items: center;
      background: #f8fafc;
      padding: 0;
    }
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 50px;
    }
    .section-header p.header-subtitle {
      margin-top: 16px;
      font-size: 1.125rem;
      color: var(--gray-600) !important;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.6;
    }
    /* Step Section Adjustments */
    #section-steps {
      height: 100vh;
      display: flex;
      align-items: center;
      background: #000;
      color: #fff;
    }
    .step-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      margin-top: 50px;
      position: relative;
    }
    /* SVG Connector Line Effect - Now Green */
    .step-grid::after {
      content: '';
      position: absolute;
      top: 30%; left: 10%; right: 10%;
      height: 2px;
      background: linear-gradient(90deg, transparent, #00D4AA, transparent);
      z-index: 0;
      opacity: 0.3;
    }
    .step-card {
      height: 480px;
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 40px;
      transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
      z-index: 1;
    }
    .step-card:hover {
      transform: translateY(-15px) scale(1.02);
      border-color: #00D4AA;
      box-shadow: 0 30px 60px rgba(0, 212, 170, 0.2);
    }
    .step-bg {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background-size: cover;
      background-position: center;
      opacity: 0.4;
      transition: var(--transition);
      filter: grayscale(30%);
    }
    .step-card:hover .step-bg {
      opacity: 0.7;
      filter: grayscale(0%);
    }
    .step-card::after {
      content: '';
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background: linear-gradient(to bottom, transparent 20%, rgba(0,0,0,0.95) 100%);
      z-index: 1;
    }
    .step-card-content {
      position: relative;
      z-index: 2;
    }
    .step-card .step-number {
      position: absolute;
      top: 30px; left: 30px;
      width: 50px; height: 50px;
      background: #00D4AA; /* Changed to Green */
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.25rem;
      box-shadow: 0 0 20px rgba(0, 212, 170, 0.5);
      z-index: 3;
    }
    .step-card h4 {
      font-size: 1.5rem;
      color: #00D4AA; /* Changed to Green */
      margin-bottom: 15px;
    }
    .step-card p {
      color: rgba(255,255,255,0.8) !important;
      line-height: 1.7;
      font-size: 1rem;
    }

    /* Solutions Section Adjustments */
    #section-solutions {
      height: 100vh;
      display: flex;
      align-items: center;
      background: #000;
      color: #fff;
    }
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      grid-template-rows: repeat(2, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .solution-card {
      height: 260px;
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 24px;
      transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    }
    .solution-card:hover {
      transform: translateY(-10px);
      border-color: #00D4AA;
      background: rgba(255,255,255,0.05);
      box-shadow: 0 20px 40px rgba(0, 212, 170, 0.15);
    }
    .solution-bg {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background-size: cover;
      background-position: center;
      opacity: 0.5;
      transition: var(--transition);
    }
    .solution-card:hover .solution-bg {
      opacity: 0.8;
      transform: scale(1.05);
    }
    .solution-card::after {
      content: '';
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background: linear-gradient(to bottom, transparent 30%, rgba(0,0,0,0.9) 100%);
      z-index: 1;
    }
    .solution-card-content {
      position: relative;
      z-index: 2;
    }
    .solution-card h4 {
      font-size: 1.15rem;
      color: #fff;
      margin-bottom: 8px;
      font-weight: 700;
    }
    .solution-card p {
      color: rgba(255,255,255,0.7) !important;
      font-size: 0.85rem;
      margin-bottom: 0;
      line-height: 1.5;
    }
    .solution-icon {
      position: absolute;
      top: 20px; right: 20px;
      width: 40px; height: 40px;
      background: rgba(0, 212, 170, 0.1);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #00D4AA;
      z-index: 2;
    }

    /* Partners Vertical Strips */
    #section-partners {
      height: 100vh;
      background: #000;
      position: relative;
      overflow: hidden;
      padding: 0 !important;
    }
    .partner-header {
      position: absolute;
      top: 60px;
      left: 0;
      width: 100%;
      z-index: 10;
      text-align: center;
    }
    .partner-header h2 {
      color: #fff;
      font-size: 3rem;
      margin: 0 auto 10px auto;
      font-weight: 800;
    }
    .partner-strips {
      display: flex;
      width: 100%;
      height: 100%;
    }
    .partner-strip {
      flex: 1;
      position: relative;
      overflow: hidden;
      transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1); /* Sped up and optimized easing */
      cursor: pointer;
      border-right: 1px solid rgba(255,255,255,0.1);
      will-change: flex, transform; /* Performance optimization */
    }
    .partner-strip:last-child {
      border-right: none;
    }
    .partner-strip:hover {
      flex: 3.5;
    }
    .strip-bg {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background-size: cover;
      background-position: center;
      filter: grayscale(100%) brightness(0.3);
      transition: filter 0.4s ease, transform 0.4s ease;
      will-change: filter, transform;
    }
    .partner-strip:hover .strip-bg {
      filter: grayscale(0%) brightness(0.6);
      transform: scale(1.05);
    }
    .strip-content {
      position: absolute;
      bottom: 60px;
      left: 40px;
      right: 40px;
      z-index: 5;
      color: #fff;
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.3s 0.1s ease, transform 0.3s 0.1s ease;
    }
    .partner-strip:hover .strip-content {
      opacity: 1;
      transform: translateY(0);
    }
    .strip-logo {
      height: 40px;
      margin-bottom: 24px;
      filter: brightness(0) invert(1);
      display: none; /* Removed the small white block (logo) above brand name as requested */
    }
    .strip-name {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 12px;
      display: block;
      color: #fff;
    }

    .strip-desc {
      font-size: 1rem;
      color: rgba(255,255,255,0.8);
      line-height: 1.6;
      margin-bottom: 30px;
      max-width: 450px;
    }
    .strip-stats {
      display: flex;
      gap: 40px;
    }
    .strip-stat-item {
      text-align: left;
    }
    .strip-stat-val {
      font-size: 1.75rem;
      font-weight: 800;
      color: #00D4AA;
      display: block;
    }
    .strip-stat-lbl {
      font-size: 0.85rem;
      color: rgba(255,255,255,0.6);
    }
    .more-partners-tag {
      position: absolute;
      bottom: 40px;
      right: 40px;
      color: rgba(255,255,255,0.5);
      font-size: 1rem;
      z-index: 10;
      letter-spacing: 1px;
    }
    /* Vertical text for collapsed state */
    .vertical-title {
      position: absolute;
      top: 55%;
      left: 50%;
      transform: translate(-50%, -50%) rotate(-90deg);
      color: rgba(255,255,255,0.3);
      font-size: 1.75rem;
      font-weight: 800;
      letter-spacing: 8px;
      white-space: nowrap;
      transition: opacity 0.3s;
      pointer-events: none;
      text-transform: uppercase;
    }
    .partner-strip:hover .vertical-title {
      opacity: 0;
    }

    /* Steps Section Adjustments */
    #section-steps {
      height: 100vh;
      display: flex;
      align-items: center;
      background: #fff;
      color: #000;
      position: relative;
    }
    .step-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      margin-top: 50px;
      position: relative;
    }
    .step-card {
      height: 480px;
      background: #000; /* Dark cards even on white bg for contrast */
      border: 1px solid rgba(0,0,0,0.05);
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 40px;
      transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
      z-index: 1;
    }
    .step-card:hover {
      transform: translateY(-15px) scale(1.02);
      border-color: #0066ff;
      box-shadow: 0 30px 60px rgba(0, 102, 255, 0.2);
    }
    .step-bg {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background-size: cover;
      background-position: center;
      opacity: 1; /* Full Opacity as requested */
      transition: var(--transition);
      filter: brightness(0.8); /* Slight dim for text readability */
    }
    .step-card:hover .step-bg {
      filter: brightness(1);
      transform: scale(1.05);
    }
    .step-card::after {
      content: '';
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background: linear-gradient(to bottom, transparent 20%, rgba(0,0,0,0.85) 100%);
      z-index: 1;
    }
    .step-card-content {
      position: relative;
      z-index: 2;
    }
    .step-card .step-number {
      position: absolute;
      top: 30px; left: 30px;
      width: 50px; height: 50px;
      background: #0066ff; /* Changed to Blue */
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.25rem;
      box-shadow: 0 0 20px rgba(0, 102, 255, 0.5);
      z-index: 3;
    }
    .step-card h4 {
      font-size: 1.5rem;
      color: #0066ff; /* Changed to Blue */
      margin-bottom: 15px;
    }
    .step-card p {
      color: rgba(255,255,255,0.9) !important; /* White text on full-image card */
      line-height: 1.7;
      font-size: 1rem;
    }
    
    .advantage-card {
      height: 420px; /* 增加高度，让框长一点 */
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      background: #000;
      color: #fff;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 30px;
      transition: var(--transition);
      border: 1px solid rgba(255,255,255,0.1);
    }
    .advantage-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 20px 40px rgba(0,102,255,0.2);
    }
    .advantage-bg {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background-size: cover;
      background-position: center;
      opacity: 0.6;
      transition: var(--transition);
    }
    .advantage-card:hover .advantage-bg {
      opacity: 0.8;
      transform: scale(1.05);
    }
    .advantage-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background: linear-gradient(to bottom, transparent 30%, rgba(0,0,0,0.9) 100%);
      z-index: 1;
    }
    .advantage-card-content {
      position: relative;
      z-index: 2;
    }
    .advantage-card .stat-number {
      font-size: 2.5rem;
      font-weight: 800;
      color: #00D4AA; /* Changed from Blue to Green */
      margin-bottom: 10px;
      line-height: 1;
    }
    .advantage-card h4 {
      font-size: 1.25rem;
      margin-bottom: 10px;
      color: #fff;
    }
    .advantage-card p {
      color: rgba(255,255,255,0.7) !important;
      font-size: 0.9rem;
      margin-bottom: 0;
    }

    /* Revenue Note Premium Animation */
    .revenue-note-box {
      margin-top: 60px;
      background: #fff;
      border: 1px solid rgba(0,102,255,0.1);
      border-left: 5px solid var(--primary);
      padding: 40px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      position: relative;
      overflow: hidden;
      opacity: 0;
      transform: translateY(30px);
    }
    .revenue-note-box.reveal-active {
      animation: premiumFadeIn 1s forwards cubic-bezier(0.16, 1, 0.3, 1);
    }
    @keyframes premiumFadeIn {
      to { opacity: 1; transform: translateY(0); }
    }
    .revenue-note-box::after {
      content: 'REVENUE SHARE';
      position: absolute;
      top: -10px; right: -10px;
      font-size: 4rem;
      font-weight: 900;
      color: rgba(0,102,255,0.03);
      pointer-events: none;
    }
    .revenue-note-box p {
      font-size: 1.2rem;
      color: var(--dark) !important;
      line-height: 1.8;
      margin-bottom: 0;
      background: linear-gradient(90deg, var(--dark), var(--primary), var(--dark));
      background-size: 200% auto;
      -webkit-background-clip: text;
      background-clip: text;
      animation: shimmerText 5s infinite linear;
    }
    @keyframes shimmerText {
      to { background-position: 200% center; }
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero h1 { font-size: clamp(2rem, 4vw, 3.5rem); }
      .advantage-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
      .solution-grid { grid-template-columns: repeat(2, 1fr); }
      .partner-strips { flex-wrap: wrap; }
      .partner-strip { flex: 1 1 33%; min-height: 50vh; }
      .partner-strip:hover { flex: 1 1 50%; }
      .step-grid { gap: 20px; }
      #section-advantages { height: auto; padding: 60px 0; }
      #section-solutions { height: auto; padding: 60px 0; }
    }
    @media (max-width: 768px) {
      .hero h1 { margin-top: 0; margin-bottom: 24px; font-size: 2.4rem; }
      .hero .subtitle { margin-bottom: 40px; font-size: 1rem; }
      html.lang_en .hero h1 { font-size: 2rem; }
      html.lang_en .hero .subtitle { font-size: 1rem; }
      .hero-buttons { flex-direction: column; gap: 12px; }
      .advantage-grid { grid-template-columns: 1fr; }
      .advantage-card { height: 280px; }
      .solution-grid { grid-template-columns: 1fr; }
      .solution-card { height: 200px; }
      #section-steps { height: auto; padding: 60px 0; }
      .step-grid { grid-template-columns: 1fr; gap: 16px; }
      .step-grid::after { display: none; }
      .step-card { height: 300px; padding: 24px; }
      .step-card .step-number { width: 36px; height: 36px; font-size: 1rem; }
      .partner-strip { flex: 1 1 50%; min-height: 40vh; }
      .strip-content { left: 20px; right: 20px; bottom: 30px; opacity: 1; transform: none; }
      .strip-name { font-size: 1.5rem; }
      .strip-bg { filter: grayscale(40%) brightness(0.4); }
      .vertical-title { display: none; }
      .revenue-note-box { margin-top: 30px; padding: 20px; }
      .revenue-note-box p { font-size: 1rem; }
      .logo-wall { gap: 20px; }
      .logo-item { font-size: 1rem; }

      /* Section header mobile sizing */
      .section-header h2 {
        font-size: 1.5rem; /* title → size 2 */
      }
      .section-header p.header-subtitle,
      #section-steps .section-header p {
        font-size: 0.9rem; /* 副标题 size 0.9 — 带 p 元素选择器匹配特异性 */
      }
      html.lang_en .section-header p.header-subtitle {
        font-size: 0.9375rem;
      }
      .partner-header h2 {
        font-size: 1.5rem; /* "他们先行一步" title → size 2 */
      }

      /* Partner section: fix header overlap with strips on mobile */
      #section-partners {
        height: auto !important;
        padding-top: 80px !important;
        padding-bottom: 60px !important;
        overflow: visible;
      }
      .partner-header {
        position: relative;
        top: 0;
        padding: 0 20px;
        margin-bottom: 20px;
      }
      .partner-strips {
        height: auto;
      }
      .more-partners-tag {
        position: relative;
        bottom: auto;
        right: auto;
        text-align: center;
        padding: 20px 0 10px;
      }
    }
    @media (max-width: 480px) {
      .hero h1 { font-size: 2rem; }
      html.lang_en .hero h1 { font-size: 1.8rem; }
      .partner-strip { flex: 1 1 100%; min-height: 30vh; border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); }
      .partner-strip:hover { flex: 1 1 100%; }
      .step-card { height: 250px; }
    }