/* ==========================================================================
   快连官网 - 极速不止于速度
   颜色基调：深海军蓝 + 青蓝渐变
   ========================================================================== */

:root {
    --primary: #0066CC;            /* 主品牌蓝 */
    --primary-dark: #004C99;
    --primary-light: #3399FF;
    --accent: #00B4D8;             /* 青蓝强调色 */
    --accent-dark: #0096B4;
    --bg-dark: #0A192F;            /* 深海军蓝背景 */
    --bg-light: #F0F7FF;           /* 极浅蓝背景 */
    --text-dark: #0A192F;
    --text-medium: #2C3E50;
    --text-light: #5A7A9A;
    --white: #FFFFFF;
    --card-bg: #F8FBFF;
    --border-light: rgba(0, 102, 204, 0.08);
    --shadow-sm: 0 2px 12px rgba(0, 102, 204, 0.04);
    --shadow-md: 0 8px 28px rgba(0, 102, 204, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 102, 204, 0.12);
    --gradient-hero: linear-gradient(135deg, #0A192F 0%, #0F2A4A 40%, #14456E 70%, #1B6590 100%);
    --gradient-cta: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
    --gradient-accent: linear-gradient(135deg, #00B4D8 0%, #0096B4 100%);
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-xl: 40px;
}

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

body {
    font-family: 'Inter', -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.65;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ========== NAVBAR ========== */
.navbar {
    background: rgba(10, 25, 47, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(0, 180, 216, 0.12);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 10px 0;
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.logo-area {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 1.5rem;
    color: #fff;
    text-decoration: none;
    letter-spacing: -0.5px;
}
.logo-area img {
    height: 42px;
    width: auto;
    display: block;
    filter: drop-shadow(0 0 8px rgba(0, 180, 216, 0.5));
}
.logo-area span {
    color: var(--accent);
}
.logo-area .logo-tag {
    font-size: 0.6rem;
    background: var(--accent);
    color: #0A192F;
    padding: 2px 10px;
    border-radius: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-left: 4px;
}
.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}
.nav-links a {
    text-decoration: none;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.88rem;
    transition: 0.25s;
    position: relative;
    letter-spacing: 0.3px;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
    border-radius: 2px;
}
.nav-links a:hover::after {
    width: 100%;
}
.nav-links a:hover {
    color: var(--accent);
}
.nav-links a.active {
    color: var(--accent);
}
.nav-links a.active::after {
    width: 100%;
}
.btn-nav {
    background: var(--gradient-accent) !important;
    color: #0A192F !important;
    padding: 8px 22px;
    border-radius: 40px;
    font-weight: 700;
    font-size: 0.82rem;
    box-shadow: 0 4px 20px rgba(0, 180, 216, 0.35);
    transition: all 0.3s;
    letter-spacing: 0.5px;
}
.btn-nav::after {
    display: none !important;
}
.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 180, 216, 0.5);
    color: #0A192F !important;
}

/* ========== HERO ========== */
.hero {
    padding: 80px 0 70px;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 180, 216, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 102, 204, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero-grid {
    display: flex;
    align-items: center;
    gap: 50px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}
.hero-left {
    flex: 1.15;
    min-width: 320px;
}
.hero-right {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: flex-end;
}
.hero-badge {
    display: inline-block;
    background: rgba(0, 180, 216, 0.12);
    border: 1px solid rgba(0, 180, 216, 0.25);
    border-radius: 40px;
    padding: 6px 22px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 14px;
    letter-spacing: 1px;
}
.hero-badge .dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    margin-right: 6px;
    animation: pulse-dot 1.5s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}
.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.12;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: -1px;
}
.hero h1 .highlight {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}
.hero h1 .underline {
    border-bottom: 3px solid var(--accent);
    padding-bottom: 2px;
}
.hero-desc {
    font-size: 1.02rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 540px;
    margin-bottom: 20px;
    line-height: 1.8;
}
.hero-desc strong {
    color: #fff;
    font-weight: 600;
}
.hero-desc .highlight-text {
    color: var(--accent);
    font-weight: 700;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.btn-primary {
    background: var(--gradient-accent);
    color: #0A192F;
    border: none;
    padding: 14px 36px;
    border-radius: 60px;
    font-weight: 700;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 24px rgba(0, 180, 216, 0.4);
    transition: all 0.3s;
    cursor: pointer;
    text-decoration: none;
    letter-spacing: 0.5px;
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 180, 216, 0.55);
    background: linear-gradient(135deg, #00c8e0 0%, #00b4d8 100%);
}
.btn-outline {
    background: transparent;
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 14px 28px;
    border-radius: 60px;
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: 0.3s;
    text-decoration: none;
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0, 180, 216, 0.06);
}
.hero-platforms {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 18px;
}
.hero-platforms span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.06);
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 0.82rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: 0.3s;
}
.hero-platforms span:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0, 180, 216, 0.08);
}
.hero-platforms i {
    color: var(--accent);
}

.hero-image-single .img-wrapper {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 24px;
    padding: 10px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
    transition: 0.4s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    animation: heroFloat 4s ease-in-out infinite;
    backdrop-filter: blur(4px);
}
.hero-image-single .img-wrapper:hover {
    border-color: var(--accent);
    transform: translateY(-6px);
    box-shadow: 0 16px 56px rgba(0, 102, 204, 0.3);
}
@keyframes heroFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}
.hero-image-single .img-wrapper img {
    width: 100%;
    max-width: 680px;
    height: auto;
    border-radius: 16px;
    max-height: 380px;
    object-fit: contain;
    display: block;
}

/* ========== SECTION HEADERS ========== */
.section-header {
    text-align: center;
    margin-bottom: 36px;
}
.section-badge {
    display: inline-block;
    background: rgba(0, 102, 204, 0.06);
    border: 1px solid rgba(0, 102, 204, 0.1);
    border-radius: 40px;
    padding: 4px 20px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    letter-spacing: 1px;
}
.section-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}
.section-title i {
    color: var(--primary);
    margin-right: 8px;
}
.section-title .gold {
    color: var(--accent-dark);
}
.section-sub {
    color: var(--text-medium);
    font-size: 1rem;
    margin-top: 4px;
}

/* ========== DUAL ENGINE SECTION (新创意版块) ========== */
.dual-engine-section {
    padding: 70px 0 80px;
    background: var(--white);
    position: relative;
}
.dual-engine-grid {
    display: flex;
    align-items: stretch;
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
    flex-wrap: wrap;
}
.engine-card {
    flex: 1;
    min-width: 280px;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 30px 28px;
    text-align: center;
    border: 1px solid var(--border-light);
    transition: 0.3s;
    box-shadow: var(--shadow-sm);
}
.engine-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 180, 216, 0.2);
}
.engine-icon {
    font-size: 2.8rem;
    margin-bottom: 14px;
}
.engine-speed .engine-icon { color: var(--accent); }
.engine-stability .engine-icon { color: var(--primary); }
.engine-card h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 10px;
}
.engine-card p {
    color: var(--text-medium);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 18px;
}
.engine-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}
.engine-metrics span {
    background: rgba(0, 102, 204, 0.05);
    padding: 5px 14px;
    border-radius: 30px;
    font-size: 0.8rem;
    color: var(--text-medium);
}
.engine-metrics strong {
    color: var(--primary);
    font-size: 1.1rem;
}
.engine-divider {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 50px;
    flex-shrink: 0;
}
.divider-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(to bottom, transparent, rgba(0, 180, 216, 0.3), transparent);
}
.divider-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-dark);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 0 0 4px rgba(0, 180, 216, 0.1);
}
.engine-conclusion {
    text-align: center;
    margin-top: 40px;
    font-size: 1.1rem;
    color: var(--text-medium);
}
.engine-conclusion i {
    color: var(--accent);
    font-size: 2rem;
    display: block;
    margin-bottom: 8px;
}
.engine-conclusion p strong {
    color: var(--text-dark);
    font-weight: 700;
}

/* ========== SPEED DATA SECTION (速度可视化) ========== */
.speed-data-section {
    padding: 70px 0 80px;
    background: var(--bg-light);
}
.speed-bars {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.speed-bar-row {
    display: flex;
    align-items: center;
    gap: 20px;
}
.speed-label {
    flex: 0 0 140px;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
    text-align: right;
}
.speed-bar-track {
    flex: 1;
    height: 30px;
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.04);
}
.speed-bar-fill {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 10px;
    color: #0A192F;
    font-weight: 700;
    font-size: 0.8rem;
    transition: width 1.5s ease;
}
.speed-bar-fill.secondary {
    background: linear-gradient(135deg, #90A4AE, #607D8B);
    color: #fff;
}
.speed-bar-fill.tertiary {
    background: linear-gradient(135deg, #CFD8DC, #B0BEC5);
    color: #333;
}
.speed-note {
    text-align: center;
    margin-top: 30px;
    color: var(--text-light);
    font-size: 0.85rem;
}
.speed-note i {
    color: var(--accent);
    margin-right: 6px;
}

/* ========== BRAND INTRO ========== */
.brand-intro-section {
    padding: 70px 0 80px;
    background: var(--white);
}
.brand-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}
.brand-intro-image {
    background: var(--bg-light);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid var(--border-light);
    overflow: hidden;
}
.brand-intro-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    display: block;
    transition: 0.5s;
}
.brand-intro-image:hover img {
    transform: scale(1.02);
}
.brand-intro-text h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 14px;
    letter-spacing: -0.5px;
}
.brand-intro-text h2 i {
    color: var(--primary);
    margin-right: 10px;
}
.brand-intro-text h2 .gold {
    color: var(--accent-dark);
}
.brand-intro-text p {
    color: var(--text-medium);
    font-size: 0.98rem;
    line-height: 1.85;
    margin-bottom: 12px;
}
.brand-intro-text p strong {
    color: var(--text-dark);
}
.brand-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}
.brand-tags span {
    background: var(--bg-light);
    border: 1px solid var(--border-light);
    border-radius: 30px;
    padding: 5px 16px;
    font-size: 0.78rem;
    color: var(--primary);
    font-weight: 600;
    transition: 0.3s;
}
.brand-tags span:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ========== SECURITY COMMIT SECTION (全链路加密) ========== */
.security-commit-section {
    padding: 70px 0 80px;
    background: var(--bg-dark);
    position: relative;
}
.security-commit-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 180, 216, 0.3), transparent);
}
.security-commit-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 180, 216, 0.15);
    border-radius: var(--radius-lg);
    padding: 40px 44px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.security-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 14px;
}
.security-commit-card h2 {
    color: #fff;
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}
.security-commit-card h2 .gold {
    color: var(--accent);
}
.security-commit-card p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto 20px;
}
.security-points {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
}
.security-points span {
    background: rgba(0, 180, 216, 0.08);
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 30px;
    padding: 6px 18px;
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 600;
}
.security-footer {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 16px;
}
.security-footer i {
    color: var(--accent);
}

/* ========== ABOUT / STATS ========== */
.about-section {
    padding: 70px 0 80px;
    background: var(--bg-light);
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}
.about-text h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 14px;
    letter-spacing: -0.5px;
}
.about-text h2 i {
    color: var(--primary);
    margin-right: 10px;
}
.about-text p {
    color: var(--text-medium);
    font-size: 0.98rem;
    line-height: 1.85;
    margin-bottom: 12px;
}
.about-text p strong {
    color: var(--text-dark);
}
.about-text p .highlight-gold {
    color: var(--accent-dark);
    font-weight: 700;
}
.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.stat-box {
    background: var(--white);
    border-radius: 16px;
    padding: 22px 16px;
    text-align: center;
    border: 1px solid var(--border-light);
    transition: 0.3s;
}
.stat-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(0, 102, 204, 0.15);
}
.stat-box .num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary);
    letter-spacing: -1px;
}
.stat-box .label {
    font-size: 0.82rem;
    color: var(--text-medium);
    margin-top: 2px;
}

/* ========== PRICING ========== */
.pricing-section {
    padding: 70px 0 80px;
    background: var(--white);
}
.pricing-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 26px;
    justify-content: center;
}
.pricing-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 34px 28px 30px;
    flex: 1;
    min-width: 270px;
    max-width: 350px;
    border: 1px solid var(--border-light);
    transition: 0.4s;
    text-align: center;
    box-shadow: var(--shadow-sm);
    position: relative;
}
.pricing-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 102, 204, 0.15);
    box-shadow: var(--shadow-lg);
}
.pricing-card.featured {
    border: 2px solid var(--primary);
    background: linear-gradient(145deg, #F8FBFF, #E6F2FF);
    position: relative;
}
.pricing-card.featured::before {
    content: "极速不止于速度";
    position: absolute;
    top: -13px;
    right: 20px;
    background: var(--gradient-accent);
    color: #0A192F;
    padding: 3px 18px;
    border-radius: 30px;
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 1px;
}
.pricing-icon {
    font-size: 2.6rem;
    color: var(--primary);
    margin-bottom: 14px;
}
.pricing-name {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 6px;
    color: var(--text-dark);
}
.pricing-desc {
    color: var(--text-medium);
    font-size: 0.9rem;
    margin-bottom: 14px;
}
.pricing-price {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 14px;
    letter-spacing: -1px;
}
.price-unit {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-light);
}
.price-old {
    font-size: 0.82rem;
    color: #B0C4DE;
    text-decoration: line-through;
    margin-left: 8px;
}
.pricing-features {
    list-style: none;
    margin: 14px 0 18px;
    text-align: left;
    padding-left: 4px;
}
.pricing-features li {
    padding: 7px 0;
    color: var(--text-medium);
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 1.4;
}
.pricing-features li i {
    color: var(--primary);
    width: 22px;
    flex-shrink: 0;
    text-align: center;
}
.pricing-btn {
    background: var(--gradient-cta);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 13px;
    border-radius: 40px;
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    transition: 0.3s;
    border: none;
    cursor: pointer;
    letter-spacing: 0.5px;
}
.pricing-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 102, 204, 0.3);
}

/* ========== SERVICES ========== */
.services-section {
    padding: 70px 0 80px;
    background: var(--bg-dark);
    position: relative;
}
.services-section .section-title {
    color: #fff;
}
.services-section .section-sub {
    color: rgba(255, 255, 255, 0.5);
}
.services-section .section-badge {
    background: rgba(0, 180, 216, 0.08);
    border-color: rgba(0, 180, 216, 0.2);
    color: var(--accent);
}
.services-flex {
    display: flex;
    align-items: stretch;
    gap: 50px;
    flex-wrap: wrap;
}
.services-left {
    flex: 1.4;
    min-width: 300px;
}
.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    height: 100%;
}
.service-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
    padding: 28px 22px 24px;
    border: 1px solid rgba(0, 180, 216, 0.12);
    transition: 0.3s;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 180, 216, 0.3);
    background: rgba(0, 180, 216, 0.05);
}
.service-card .icon {
    font-size: 2.4rem;
    color: var(--accent);
    margin-bottom: 12px;
    display: block;
}
.service-card h3 {
    font-size: 1.15rem;
    font-weight: 800;
    color: #fff;
}
.service-card p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
    margin-top: 6px;
}
.service-card .tag {
    display: inline-block;
    background: rgba(0, 180, 216, 0.08);
    padding: 3px 14px;
    border-radius: 30px;
    font-size: 0.68rem;
    color: var(--accent);
    font-weight: 700;
    margin-top: 10px;
    letter-spacing: 1px;
}
.services-right {
    flex: 1;
    min-width: 300px;
    display: flex;
    align-items: stretch;
    justify-content: center;
}
.services-right .showcase-img {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    padding: 10px;
    border: 1px solid rgba(0, 180, 216, 0.1);
    transition: 0.3s;
    width: 100%;
    max-width: 720px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.services-right .showcase-img:hover {
    border-color: rgba(0, 180, 216, 0.25);
}
.services-right .showcase-img img {
    width: 100%;
    height: auto;
    max-height: 400px;
    border-radius: 12px;
    display: block;
    object-fit: contain;
}

/* ========== DOWNLOAD ========== */
.download-section {
    padding: 70px 0 80px;
    background: var(--white);
}
.download-header {
    text-align: center;
    margin-bottom: 34px;
}
.download-header .badge {
    display: inline-block;
    background: rgba(0, 102, 204, 0.06);
    border: 1px solid rgba(0, 102, 204, 0.1);
    border-radius: 40px;
    padding: 4px 18px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    letter-spacing: 1px;
}
.download-header h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}
.download-header h2 i {
    color: var(--primary);
    margin-right: 8px;
}
.download-header p {
    color: var(--text-medium);
    font-size: 1rem;
}
.download-header p strong {
    color: var(--text-dark);
}
.download-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.download-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 26px 18px 22px;
    text-align: center;
    border: 1px solid var(--border-light);
    transition: 0.3s;
}
.download-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 102, 204, 0.15);
    box-shadow: var(--shadow-md);
}
.download-card .icon-wrap {
    font-size: 2.6rem;
    color: var(--primary);
    margin-bottom: 10px;
    display: block;
}
.download-card h3 {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-dark);
}
.download-card .version {
    font-size: 0.72rem;
    color: var(--text-light);
}
.download-card .desc {
    font-size: 0.85rem;
    color: var(--text-medium);
    margin: 10px 0 14px;
    min-height: 40px;
}
.download-card .btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient-cta);
    color: #fff;
    padding: 10px 24px;
    border-radius: 40px;
    font-weight: 700;
    font-size: 0.85rem;
    text-decoration: none;
    transition: 0.3s;
    box-shadow: 0 4px 16px rgba(0, 102, 204, 0.2);
}
.download-card .btn-download:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}
.download-card .badge-hot {
    font-size: 0.62rem;
    font-weight: 800;
    color: var(--accent-dark);
    background: rgba(0, 180, 216, 0.08);
    padding: 2px 12px;
    border-radius: 30px;
    display: inline-block;
    margin-bottom: 6px;
    letter-spacing: 1px;
}
.download-footer {
    text-align: center;
    margin-top: 26px;
    color: var(--text-light);
    font-size: 0.88rem;
}
.download-footer i {
    color: var(--primary);
}

/* ========== TECH ========== */
.tech-section {
    padding: 70px 0 80px;
    background: var(--bg-light);
}
.tech-flex {
    display: flex;
    align-items: flex-start;
    gap: 50px;
    flex-wrap: wrap;
}
.tech-left {
    flex: 1.2;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 60px;
}
.tech-left .showcase-img {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 12px;
    border: 1px solid var(--border-light);
    transition: 0.3s;
    width: 100%;
    max-width: 680px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.tech-left .showcase-img:hover {
    border-color: rgba(0, 102, 204, 0.15);
    box-shadow: var(--shadow-md);
}
.tech-left .showcase-img img {
    width: 100%;
    height: auto;
    max-height: 430px;
    border-radius: 12px;
    display: block;
    object-fit: contain;
}
.tech-right {
    flex: 1;
    min-width: 300px;
}
.tech-right .section-header {
    text-align: left;
    margin-bottom: 22px;
}
.tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}
.tech-item {
    background: var(--white);
    border-radius: 16px;
    padding: 22px 18px 18px;
    text-align: center;
    border: 1px solid var(--border-light);
    transition: 0.3s;
}
.tech-item:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 102, 204, 0.15);
    box-shadow: var(--shadow-sm);
}
.tech-item i {
    font-size: 1.9rem;
    color: var(--primary);
    margin-bottom: 8px;
    display: block;
}
.tech-item h4 {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-dark);
}
.tech-item p {
    font-size: 0.82rem;
    color: var(--text-medium);
    line-height: 1.5;
}

/* ========== REVIEWS ========== */
.reviews-section {
    padding: 60px 0 70px;
    background: var(--bg-light);
}
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.review-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 26px 22px 22px;
    border: 1px solid var(--border-light);
    transition: 0.3s;
    box-shadow: var(--shadow-sm);
}
.review-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 102, 204, 0.15);
    box-shadow: var(--shadow-md);
}
.review-card .stars {
    color: #FFB100;
    font-size: 0.88rem;
    letter-spacing: 2px;
    margin-bottom: 6px;
}
.review-card .text {
    font-size: 0.92rem;
    color: var(--text-dark);
    line-height: 1.65;
}
.review-card .author {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-light);
}
.review-card .author .avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--gradient-cta);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.05rem;
    flex-shrink: 0;
}
.review-card .author .info .name {
    font-weight: 700;
    color: var(--text-dark);
    font-size: 0.88rem;
}
.review-card .author .info .location {
    font-size: 0.72rem;
    color: var(--text-light);
}
.review-card .badge-verified {
    display: inline-block;
    background: rgba(34, 197, 94, 0.08);
    color: #22c55e;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 30px;
    margin-top: 4px;
}
.review-card.hidden {
    display: none;
}
.review-card.hidden.show {
    display: block;
}
.btn-toggle-review {
    display: inline-block;
    padding: 12px 34px;
    border-radius: 40px;
    border: 1.5px solid rgba(0, 102, 204, 0.15);
    color: var(--text-medium);
    background: var(--white);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: 0.3s;
}
.btn-toggle-review:hover {
    background: var(--bg-light);
    border-color: var(--primary);
    color: var(--primary);
}

/* ========== BLOG ========== */
.blog-section {
    padding: 70px 0 80px;
    background: var(--white);
}
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.blog-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: 0.3s;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
}
.blog-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 102, 204, 0.15);
    box-shadow: var(--shadow-md);
}
.blog-card .blog-img {
    width: 100%;
    height: 170px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    position: relative;
}
.blog-card .blog-img i {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.85);
    text-shadow: 0 4px 12px rgba(0,0,0,0.3);
    transition: 0.3s;
}
.blog-card:hover .blog-img i {
    transform: scale(1.15);
}
.blog-img.gradient-cyan {
    background: linear-gradient(135deg, #00B4D8 0%, #0096B4 100%);
}
.blog-img.gradient-teal {
    background: linear-gradient(135deg, #00838F 0%, #006064 100%);
}
.blog-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(255,255,255,0.1) 0%, transparent 70%);
    pointer-events: none;
}
.blog-body {
    padding: 16px 18px 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.blog-body h4 {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.4;
    margin-bottom: 6px;
}
.blog-body h4 a {
    color: var(--text-dark);
    text-decoration: none;
}
.blog-body h4 a:hover {
    color: var(--primary);
}
.blog-body p {
    font-size: 0.84rem;
    color: var(--text-medium);
    margin-bottom: 10px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-body .meta {
    font-size: 0.72rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 8px;
    border-top: 1px solid var(--border-light);
}
.blog-body .meta a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* ========== PARTNER ========== */
.partner-section {
    padding: 70px 0 80px;
    background: var(--bg-dark);
    position: relative;
}
.partner-section .partner-title {
    color: #fff;
}
.partner-section .partner-sub {
    color: rgba(255, 255, 255, 0.5);
}
.partner-header {
    text-align: center;
    margin-bottom: 30px;
}
.partner-badge {
    display: inline-block;
    background: rgba(0, 180, 216, 0.08);
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 40px;
    padding: 4px 20px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 6px;
    letter-spacing: 1px;
}
.partner-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}
.partner-title span {
    color: var(--accent);
}
.partner-sub {
    font-size: 1rem;
}
.partner-benefits {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    max-width: 1100px;
    margin: 0 auto 34px;
}
.partner-benefit-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
    padding: 26px 18px 22px;
    text-align: center;
    border: 1px solid rgba(0, 180, 216, 0.12);
    transition: 0.3s;
}
.partner-benefit-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 180, 216, 0.3);
    background: rgba(0, 180, 216, 0.05);
}
.partner-benefit-card .icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(0, 180, 216, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 1.5rem;
    color: var(--accent);
}
.partner-benefit-card h4 {
    font-size: 1rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 4px;
}
.partner-benefit-card p {
    font-size: 0.84rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
}
.partner-cta-box {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.6), rgba(0, 76, 153, 0.6));
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: var(--radius-lg);
    padding: 34px 38px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}
.cta-info h3 {
    font-size: 1.25rem;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}
.cta-info p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.88rem;
    margin-top: 2px;
}
.cta-contact {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    margin-top: 6px;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.5);
}
.cta-contact span i {
    margin-right: 6px;
    color: var(--accent);
}
.btn-partner-apply {
    background: var(--gradient-accent);
    color: #0A192F;
    padding: 12px 34px;
    border-radius: 60px;
    font-weight: 800;
    font-size: 0.9rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: 0.3s;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 180, 216, 0.35);
    flex-shrink: 0;
    letter-spacing: 0.5px;
}
.btn-partner-apply:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #00c8e0 0%, #00b4d8 100%);
    box-shadow: 0 8px 32px rgba(0, 180, 216, 0.5);
}

/* ========== FAQ ========== */
.faq-section {
    padding: 50px 0 70px;
    background: var(--bg-light);
}
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    background: var(--white);
    border-radius: 14px;
    padding: 20px 24px;
    border: 1px solid var(--border-light);
    transition: 0.3s;
}
.faq-item:hover {
    border-color: rgba(0, 102, 204, 0.12);
    box-shadow: var(--shadow-sm);
}
.faq-item .q {
    font-weight: 800;
    font-size: 0.95rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 12px;
}
.faq-item .q i {
    color: var(--primary);
    font-size: 0.75rem;
    width: 20px;
}
.faq-item .a {
    margin-top: 6px;
    padding-left: 30px;
    color: var(--text-medium);
    font-size: 0.9rem;
    line-height: 1.7;
}
.faq-item .a strong {
    color: var(--text-dark);
}

/* ========== FOOTER ========== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.65);
    padding: 50px 0 28px;
    border-top: 3px solid var(--primary);
}
.footer a {
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
    transition: 0.2s;
}
.footer a:hover {
    color: var(--accent);
}
.footer .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 34px;
    margin-bottom: 28px;
}
.footer .brand-col .logo {
    font-size: 1.7rem;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}
.footer .brand-col .logo i {
    color: var(--accent);
}
.footer .brand-col .logo span {
    color: var(--accent);
}
.footer .brand-col p {
    font-size: 0.88rem;
    line-height: 1.7;
    max-width: 340px;
}
.footer .brand-col p strong {
    color: rgba(255, 255, 255, 0.85);
}
.footer .col h4 {
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}
.footer .col ul {
    list-style: none;
}
.footer .col ul li {
    margin-bottom: 7px;
}
.footer .col ul li a {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
    transition: 0.2s;
}
.footer .col ul li a:hover {
    color: var(--accent);
}
.footer .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 16px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
    font-size: 0.78rem;
}
.footer .footer-bottom .icp {
    color: rgba(255, 255, 255, 0.35);
    text-align: center;
}
.footer .footer-bottom .icp a {
    color: rgba(255, 255, 255, 0.35);
    text-decoration: none;
}
.footer .footer-bottom .icp a:hover {
    color: var(--accent);
}
.footer .footer-bottom .icp .sep {
    margin: 0 8px;
    color: rgba(255, 255, 255, 0.12);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .container { padding: 0 24px; }
    .hero h1 { font-size: 2.5rem; }
    .brand-intro-grid { grid-template-columns: 1fr; text-align: center; }
    .brand-intro-grid .brand-intro-image { order: -1; }
    .about-grid { grid-template-columns: 1fr; text-align: center; }
    .services-flex { flex-direction: column; text-align: center; }
    .services-grid { grid-template-columns: 1fr 1fr; }
    .services-right { width: 100%; }
    .services-right .showcase-img { max-width: 100%; }
    .download-grid { grid-template-columns: 1fr 1fr; }
    .reviews-grid { grid-template-columns: repeat(2, 1fr); }
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-flex { flex-direction: column; text-align: center; }
    .tech-right .section-header { text-align: center; }
    .tech-right .tech-grid { grid-template-columns: 1fr 1fr; }
    .tech-left { width: 100%; padding-top: 0; }
    .tech-left .showcase-img { max-width: 100%; }
    .cert-grid { flex-direction: column; align-items: center; }
    .cert-card { max-width: 100%; width: 100%; }
    .partner-benefits { grid-template-columns: repeat(2, 1fr); }
    .footer .footer-grid { grid-template-columns: 1fr 1fr; }
    .dual-engine-grid { flex-direction: column; }
    .engine-divider { flex-direction: row; width: 100%; height: 50px; }
    .divider-line { width: 100%; height: 2px; flex: 1; background: linear-gradient(to right, transparent, rgba(0,180,216,0.3), transparent); }
}
@media (max-width: 768px) {
    .container { padding: 0 18px; }
    .nav-inner { flex-direction: column; align-items: center; }
    .nav-links { justify-content: center; gap: 10px; }
    .hero-grid { flex-direction: column; text-align: center; }
    .hero-left { min-width: unset; }
    .hero-right { min-width: unset; justify-content: center; }
    .hero h1 { font-size: 2rem; }
    .hero-desc { margin: 0 auto; }
    .hero-actions { justify-content: center; }
    .hero-platforms { justify-content: center; }
    .hero-image-single .img-wrapper { margin-right: 0; }
    .services-grid { grid-template-columns: 1fr; }
    .download-grid { grid-template-columns: 1fr 1fr; }
    .tech-right .tech-grid { grid-template-columns: 1fr 1fr; }
    .reviews-grid { grid-template-columns: 1fr; }
    .blog-grid { grid-template-columns: 1fr; }
    .partner-benefits { grid-template-columns: 1fr 1fr; }
    .partner-cta-box { flex-direction: column; text-align: center; padding: 24px; }
    .cta-contact { justify-content: center; }
    .btn-partner-apply { width: 100%; justify-content: center; }
    .footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 26px; }
    .footer .footer-bottom { flex-direction: column; text-align: center; }
    .dual-engine-grid { gap: 20px; }
    .engine-card { padding: 24px 20px; }
    .speed-label { flex-basis: 100px; font-size: 0.8rem; }
    .security-commit-card { padding: 28px 20px; }
    .security-commit-card h2 { font-size: 1.4rem; }
}
@media (max-width: 480px) {
    .container { padding: 0 12px; }
    .hero h1 { font-size: 1.7rem; }
    .download-grid { grid-template-columns: 1fr; }
    .tech-right .tech-grid { grid-template-columns: 1fr; }
    .partner-benefits { grid-template-columns: 1fr; }
    .hero-image-single .img-wrapper img { max-height: 190px; max-width: 270px; }
    .btn-primary, .btn-outline { padding: 11px 22px; font-size: 0.88rem; }
    .footer .footer-grid { grid-template-columns: 1fr; gap: 22px; text-align: center; }
    .footer .brand-col p { max-width: 100%; }
    .services-right .showcase-img img { max-height: 260px; }
    .tech-left .showcase-img img { max-height: 280px; }
    .brand-intro-text .brand-tags { justify-content: center; }
    .speed-label { flex-basis: 80px; }
    .speed-bar-row { flex-direction: column; align-items: flex-start; gap: 8px; }
    .speed-label { text-align: left; }
    .dual-engine-grid { gap: 10px; }
    .engine-divider { height: 30px; }
    .divider-icon { width: 30px; height: 30px; font-size: 0.9rem; }
    .security-points span { font-size: 0.7rem; }
}