:root {
    --bg-primary: #004031;
    --bg-secondary: #00302c;
    --bg-card: #14141f;
    --bg-card-hover: #1a1a2a;
    --border-color: #1e1e30;
    --border-glow: #2a2a42;
    --text-primary: #e8e8f0;
    --text-secondary: #a8a8bc;
    --text-muted: #6e6e82;
    --accent: #00c8ff;
    --accent-glow: rgba(0, 200, 255, 0.25);
    --accent-strong: rgba(0, 200, 255, 0.5);
    --gradient-cta: linear-gradient(135deg, #14cb54 0%, #018347 50%, #035009 100%);
    --gradient-hero: linear-gradient(160deg, #16d158 0%, #044c28 30%, #0d6424 60%, #094c2a 100%);
    --gradient-card: linear-gradient(145deg, #14141f 0%, #181826 100%);
    --radius-sm: 10px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.55);
    --shadow-glow: 0 0 40px rgba(0, 200, 255, 0.12), 0 0 80px rgba(0, 200, 255, 0.05);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
    --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
    --container-max: 1200px;
    --nav-height: 68px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    background-image:
        radial-gradient(ellipse at 50% 0%, rgba(0, 180, 255, 0.04) 0%, transparent 70%),
        radial-gradient(ellipse at 85% 20%, rgba(108, 60, 224, 0.03) 0%, transparent 60%),
        radial-gradient(ellipse at 15% 60%, rgba(0, 180, 255, 0.03) 0%, transparent 55%);
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

/* ========== banner ========== */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 10, 20, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    height: var(--nav-height);
    display: flex;
    align-items: center;
}

header .nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
    z-index: 1001;
}
.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--gradient-cta);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    box-shadow: 0 4px 16px rgba(0, 180, 240, 0.35);
    letter-spacing: -1px;
}
.logo-text {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.3px;
    white-space: nowrap;
}
.logo-text span {
    color: var(--accent);
}

nav {
    display: flex;
    align-items: center;
    gap: 28px;
}
nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
    white-space: nowrap;
}
nav a:hover {
    color: #fff;
}
nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transition: var(--transition-smooth);
}
nav a:hover::after {
    width: 100%;
}

.btn-nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 22px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.88rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    white-space: nowrap;
    background: var(--gradient-cta);
    color: #fff;
    box-shadow: 0 4px 18px rgba(0, 160, 230, 0.35);
    transition: var(--transition-smooth);
    letter-spacing: 0.2px;
    position: relative;
    overflow: hidden;
}
.btn-nav-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 65%);
    opacity: 0;
    transition: opacity 0.3s;
}
.btn-nav-cta:hover::before {
    opacity: 1;
}
.btn-nav-cta:hover {
    box-shadow: 0 6px 28px rgba(0, 180, 240, 0.5);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    flex-direction: column;
    gap: 5px;
}
.mobile-menu-btn span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: #fff;
    border-radius: 3px;
    transition: var(--transition-smooth);
}
.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}
.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

@media (max-width: 860px) {
    nav {
        position: fixed;
        top: 0;
        right: -320px;
        width: 280px;
        height: 100vh;
        background: rgba(14, 14, 24, 0.97);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        flex-direction: column;
        padding: 100px 32px 40px;
        gap: 20px;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-left: 1px solid var(--border-color);
        z-index: 999;
    }
    nav.open {
        right: 0;
    }
    .mobile-menu-btn {
        display: flex;
    }
    nav a {
        font-size: 1rem;
    }
    .btn-nav-cta {
        width: 100%;
        justify-content: center;
        padding: 12px 22px;
        font-size: 0.95rem;
    }
}

/* ========== main ========== */
main {
    position: relative;
    z-index: 1;
}

section {
    padding: 80px 24px;
    position: relative;
}
.section-inner {
    max-width: var(--container-max);
    margin: 0 auto;
}
.section-label {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
    background: rgba(0, 200, 255, 0.08);
    padding: 6px 14px;
    border-radius: 50px;
}
.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
    color: #fff;
    line-height: 1.25;
}
.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.65;
}

@media (max-width: 768px) {
    section {
        padding: 56px 16px;
    }
    .section-title {
        font-size: 1.6rem;
    }
    .section-subtitle {
        font-size: 0.95rem;
    }
}

/* ========== Hero ========== */
.hero-section {
    padding-top: 50px;
    padding-bottom: 60px;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}
.hero-section::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -150px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 200, 255, 0.07) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero-section::after {
    content: '';
    position: absolute;
    bottom: -180px;
    left: -120px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(108, 60, 224, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    position: relative;
    z-index: 2;
}
.hero-content h1 {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: -1px;
    line-height: 1.18;
    margin-bottom: 18px;
    color: #fff;
    background: linear-gradient(135deg, #fff 0%, #d0e8ff 50%, #a0d8ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-content .hero-pain {
    font-size: 1.12rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    line-height: 1.6;
    max-width: 480px;
}
.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 24px;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    white-space: nowrap;
    background: var(--gradient-cta);
    color: #fff;
    box-shadow: 0 6px 24px rgba(0, 170, 240, 0.4);
    transition: var(--transition-smooth);
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}
.btn-primary::after {
    content: '';
    position: absolute;
    top: -40%;
    left: -40%;
    width: 180%;
    height: 180%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.22) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.35s;
}
.btn-primary:hover::after {
    opacity: 1;
}
.btn-primary:hover {
    box-shadow: 0 10px 36px rgba(0, 190, 250, 0.55);
    transform: translateY(-3px);
}
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.25);
    transition: var(--transition-smooth);
    letter-spacing: 0.3px;
}
.btn-secondary:hover {
    border-color: var(--accent);
    background: rgba(0, 200, 255, 0.06);
    box-shadow: 0 0 24px rgba(0, 200, 255, 0.15);
    transform: translateY(-2px);
}
.hero-rating {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.hero-stars {
    color: #ffb800;
    font-size: 1.1rem;
    letter-spacing: 2px;
}
.hero-rating strong {
    color: #fff;
    font-size: 1.05rem;
}
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.hero-visual-inner {
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle at 40% 40%, rgba(0, 200, 255, 0.13) 0%, rgba(0, 120, 220, 0.06) 50%, transparent 70%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    animation: floatSlow 6s ease-in-out infinite;
}
@keyframes floatSlow {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-18px);
    }
}
.hero-shield {
    width: 140px;
    height: 160px;
    background: rgba(20, 22, 35, 0.8);
    border: 2px solid var(--border-glow);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    box-shadow: var(--shadow-glow);
    position: relative;
}
.hero-shield::before {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 36px;
    border: 1.5px solid rgba(0, 200, 255, 0.25);
    animation: pulseRing 3s ease-in-out infinite;
    pointer-events: none;
}
@keyframes pulseRing {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.08);
        opacity: 0.15;
    }
}
.hero-orbits {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}
.hero-orbit {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(0, 200, 255, 0.12);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: spinOrbit 20s linear infinite;
}
.hero-orbit:nth-child(1) {
    width: 260px;
    height: 260px;
    animation-duration: 18s;
}
.hero-orbit:nth-child(2) {
    width: 340px;
    height: 340px;
    animation-duration: 25s;
    animation-direction: reverse;
}
@keyframes spinOrbit {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@media (max-width: 860px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    .hero-content h1 {
        font-size: 2.1rem;
    }
    .hero-content .hero-pain {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-rating {
        justify-content: center;
    }
    .hero-visual-inner {
        width: 220px;
        height: 220px;
    }
    .hero-shield {
        width: 100px;
        height: 115px;
        font-size: 42px;
        border-radius: 22px;
    }
    .hero-orbit:nth-child(1) {
        width: 180px;
        height: 180px;
    }
    .hero-orbit:nth-child(2) {
        width: 240px;
        height: 240px;
    }
}

/* ========== Features ========== */
.features-section {
    background: var(--bg-secondary);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin-top: 40px;
}
.feature-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px 26px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    cursor: default;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 140px;
    height: 140px;
    background: radial-gradient(circle, rgba(0, 200, 255, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    transition: var(--transition-smooth);
    pointer-events: none;
}
.feature-card:hover::before {
    transform: scale(1.6);
    opacity: 1.4;
}
.feature-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow), 0 12px 40px rgba(0, 0, 0, 0.4);
    transform: translateY(-4px);
    background: var(--bg-card-hover);
}
.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 14px;
    display: block;
    position: relative;
    z-index: 1;
}
.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #fff;
    position: relative;
    z-index: 1;
}
.feature-card .pain-point {
    font-size: 0.85rem;
    color: #e05555;
    margin-bottom: 6px;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 5px;
}
.feature-card .solution {
    font-size: 0.9rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-start;
    gap: 6px;
    line-height: 1.5;
}
.solution-check {
    color: #3cd68c;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 560px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== Use Cases ========== */
.usecases-section {
    background: var(--bg-primary);
}
.usecases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-top: 40px;
}
.usecase-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 26px 20px;
    text-align: center;
    transition: var(--transition-smooth);
    cursor: default;
}
.usecase-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    transform: translateY(-3px);
    background: var(--bg-card-hover);
}
.usecase-icon {
    font-size: 2.6rem;
    margin-bottom: 10px;
    display: block;
}
.usecase-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
}
.usecase-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.usecase-devices {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 30px;
}
.device-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition-fast);
}
.device-badge:hover {
    border-color: var(--accent);
    color: #fff;
    background: rgba(0, 200, 255, 0.06);
}

@media (max-width: 900px) {
    .usecases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 500px) {
    .usecases-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========Features Highlight ========== */
.features-highlight-section {
    background: var(--bg-secondary);
}
.highlight-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}
.highlight-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px 22px;
    text-align: center;
    transition: var(--transition-smooth);
    position: relative;
}
.highlight-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}
.highlight-card .hl-icon {
    font-size: 2.8rem;
    margin-bottom: 10px;
    display: block;
}
.highlight-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}
.highlight-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.55;
}
.highlight-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 700;
    background: rgba(0, 200, 255, 0.12);
    color: var(--accent);
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}
@media (max-width: 860px) {
    .highlight-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 500px) {
    .highlight-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========Testimonials ========== */
.testimonials-section {
    background: var(--bg-primary);
}
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}
.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: var(--transition-smooth);
    position: relative;
}
.testimonial-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}
.testimonial-card .quote-mark {
    font-size: 3rem;
    line-height: 1;
    color: var(--accent);
    opacity: 0.5;
    font-family: Georgia, serif;
}
.testimonial-card .review-text {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    font-style: italic;
}
.testimonial-card .reviewer {
    display: flex;
    align-items: center;
    gap: 10px;
}
.reviewer-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--gradient-cta);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #fff;
    font-size: 0.9rem;
    flex-shrink: 0;
}
.reviewer-info strong {
    display: block;
    color: #fff;
    font-size: 0.9rem;
}
.reviewer-info span {
    font-size: 0.78rem;
    color: var(--text-muted);
}
.review-stars-mini {
    color: #ffb800;
    font-size: 0.8rem;
}
@media (max-width: 860px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 540px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== News ========== */
.news-section {
    background: var(--bg-secondary);
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}
.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition-smooth);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    transform: translateY(-3px);
    background: var(--bg-card-hover);
}
.news-card-image {
    height: 160px;
    background: linear-gradient(135deg, #1a1a30 0%, #141428 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    position: relative;
    overflow: hidden;
}
.news-card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(to top, var(--bg-card), transparent);
}
.news-card-body {
    padding: 18px 16px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.news-card-body .news-date {
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}
.news-card-body h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.4;
}
.news-card-body p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    flex: 1;
}
.news-card-body .read-more {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition-fast);
}
.news-card-body .read-more:hover {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 3px;
}
@media (max-width: 900px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 540px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== games ========== */
.game-section {
    background: var(--bg-secondary);
}
.game-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}
.game-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition-smooth);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.game-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
    transform: translateY(-3px);
    background: var(--bg-card-hover);
}
.game-card-image {
    height: 360px;
    background: linear-gradient(135deg, #1a1a30 0%, #141428 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    position: relative;
    overflow: hidden;
}
.game-card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(to top, var(--bg-card), transparent);
}
.game-card-body {
    padding: 18px 16px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.game-card-body .news-date {
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}
.game-card-body h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.4;
}
.game-card-body p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    flex: 1;
}
.game-card-body .read-more {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition-fast);
}
.game-card-body .read-more:hover {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 3px;
}
@media (max-width: 900px) {
    .game-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 540px) {
    .game-grid {
        grid-template-columns: 1fr;
    }
}


/* ========about======== */
.about-section{
  background: var(--bg-primary);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 30px 10px;
  max-width: 1200px;
  margin: 0 auto;
}

.about-img {
  width: 100%;
  overflow: hidden;
  border-radius: 8px;
}
.about-img img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.about-img img:hover {
  transform: scale(1.03);
}

.about-content h3 {
  font-size: 32px;
  margin: 0 0 20px;
  color: #222;
  font-weight: 600;
}
.about-content .text-muted {
  font-size: 16px;
  line-height: 1.8;
  color: #fff;
  margin: 0;
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 25px;
    padding: 40px 15px;
  }
  .about-content h3 {
    font-size: 24px;
  }
}


/* ========== FAQ ========== */
.faq-section {
    background: var(--bg-secondary);
}
.faq-list {
    margin-top: 36px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition-smooth);
}
.faq-item:hover {
    border-color: var(--border-glow);
}
.faq-item summary {
    padding: 20px 24px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.02rem;
    color: #fff;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    user-select: none;
    transition: var(--transition-fast);
    letter-spacing: -0.2px;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::marker {
    display: none;
    content: '';
}
.faq-arrow {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.faq-item[open] .faq-arrow {
    transform: rotate(180deg);
    background: rgba(0, 200, 255, 0.15);
    color: var(--accent);
}
.faq-item summary:hover .faq-arrow {
    background: rgba(0, 200, 255, 0.1);
    color: #fff;
}
.faq-body {
    padding: 0 24px 22px;
    animation: faqSlideIn 0.4s ease;
}
@keyframes faqSlideIn {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.faq-body ol {
    list-style: none;
    counter-reset: faq-step;
    padding-left: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.faq-body ol li {
    counter-increment: faq-step;
    position: relative;
    padding-left: 50px;
    line-height: 1.7;
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.faq-body ol li::before {
    content: counter(faq-step);
    position: absolute;
    left: 0;
    top: 0;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(0, 200, 255, 0.1);
    border: 1.5px solid rgba(0, 200, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
    color: var(--accent);
    flex-shrink: 0;
    transition: var(--transition-fast);
}
.faq-body ol li:hover::before {
    background: rgba(0, 200, 255, 0.2);
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(0, 200, 255, 0.2);
}
.faq-body ol li strong {
    display: block;
    color: #fff;
    font-size: 0.95rem;
    margin-bottom: 3px;
    letter-spacing: -0.1px;
}
@media (max-width: 500px) {
    .faq-item summary {
        padding: 16px 18px;
        font-size: 0.92rem;
    }
    .faq-body {
        padding: 0 16px 16px;
    }
    .faq-body ol li {
        padding-left: 40px;
        font-size: 0.84rem;
    }
    .faq-body ol li::before {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }
}

/* ========== Footer ========== */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 50px 24px 30px;
    position: relative;
    z-index: 1;
}
.footer-inner {
    max-width: var(--container-max);
    margin: 0 auto;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}
.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: 0.3px;
}
.footer-col a,
.footer-col p {
    font-size: 0.84rem;
    color: var(--text-secondary);
    text-decoration: none;
    display: block;
    margin-bottom: 8px;
    transition: var(--transition-fast);
    line-height: 1.5;
}
.footer-col a:hover {
    color: #fff;
}
.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}
.footer-logo-mini {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}
.footer-logo-mini .fl-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--gradient-cta);
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}
.footer-logo-mini span {
    font-weight: 700;
    color: #fff;
    font-size: 0.95rem;
}
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
}
@media (max-width: 450px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== animate ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.animate-on-scroll {
    animation: fadeInUp 0.7s ease forwards;
    opacity: 0;
}
.animate-delay-1 {
    animation-delay: 0.1s;
}
.animate-delay-2 {
    animation-delay: 0.2s;
}
.animate-delay-3 {
    animation-delay: 0.3s;
}
.animate-delay-4 {
    animation-delay: 0.4s;
}

/* to top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: #fff;
    cursor: pointer;
    z-index: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition-smooth);
    opacity: 0;
    pointer-events: none;
    box-shadow: var(--shadow-sm);
}
.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}
.back-to-top:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-3px);
}

/* overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.55);
    z-index: 998;
    display: none;
    transition: opacity 0.3s;
}
.nav-overlay.active {
    display: block;
}