:root {
    --primary: #1a56db;
    --primary-light: #3b82f6;
    --primary-dark: #1e40af;
    --accent: #f59e0b;
    --dark: #0a1628;
    --dark-2: #111d35;
    --dark-3: #1a2744;
    --gray-900: #1f2937;
    --gray-700: #374151;
    --gray-500: #6b7280;
    --gray-300: #d1d5db;
    --gray-100: #f3f4f6;
    --white: #ffffff;
    --radius: 16px;
    --radius-sm: 8px;
    --shadow: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
    --shadow-lg: 0 20px 60px -12px rgba(0,0,0,.25);
    --shadow-xl: 0 25px 80px -12px rgba(0,0,0,.35);
    --transition: .3s cubic-bezier(.4,0,.2,1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-900);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--white);
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.nav.scrolled {
    background: rgba(10, 22, 40, .95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0,0,0,.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--white);
}

.nav-logo img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: rgba(255,255,255,.8);
    font-size: .9rem;
    font-weight: 400;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-light);
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--white);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-cta {
    background: var(--primary);
    color: var(--white);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: .9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--primary-light);
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(26,86,219,.4);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.05);
    animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
    from { transform: scale(1.05); }
    to { transform: scale(1.15); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(10, 22, 40, .92) 0%,
        rgba(10, 22, 40, .75) 50%,
        rgba(26, 86, 219, .3) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 120px 24px 80px;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    background: rgba(59, 130, 246, .15);
    border: 1px solid rgba(59, 130, 246, .3);
    color: var(--primary-light);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: .85rem;
    font-weight: 500;
    margin-bottom: 28px;
    animation: fadeInUp .8s ease;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 24px;
    animation: fadeInUp .8s ease .1s both;
}

.text-gradient {
    background: linear-gradient(135deg, #60a5fa, #3b82f6, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,.7);
    line-height: 1.8;
    margin-bottom: 40px;
    animation: fadeInUp .8s ease .2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fadeInUp .8s ease .3s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 8px 30px rgba(26,86,219,.3);
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(26,86,219,.5);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255,255,255,.3);
}

.btn-outline:hover {
    border-color: var(--white);
    background: rgba(255,255,255,.05);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    animation: fadeInUp .8s ease .4s both;
}

.hero-stat {
    text-align: center;
}

.hero-stat-num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--white);
}

.hero-stat-suffix {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
}

.hero-stat-label {
    display: block;
    font-size: .8rem;
    color: rgba(255,255,255,.5);
    margin-top: 4px;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,.4);
    font-size: .75rem;
    animation: fadeInUp .8s ease .6s both;
}

.scroll-indicator {
    width: 2px;
    height: 30px;
    background: rgba(255,255,255,.2);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 50%;
    background: var(--primary-light);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { top: -50%; }
    100% { top: 100%; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== SECTIONS COMMON ===== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    background: rgba(26,86,219,.08);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: .8rem;
    font-weight: 500;
    margin-bottom: 16px;
    letter-spacing: .5px;
}

.section-tag-light {
    background: rgba(255,255,255,.15);
    color: var(--white);
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 900;
    color: var(--dark);
    line-height: 1.2;
    margin-bottom: 16px;
}

.text-left { text-align: left; }

.section-desc {
    font-size: 1.05rem;
    color: var(--gray-500);
    max-width: 560px;
    margin: 0 auto;
}

/* ===== SERVICES ===== */
.services {
    padding: 120px 0;
    background: var(--gray-100);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-300), transparent);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-img {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.service-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
}

.service-card:hover .service-img img {
    transform: scale(1.1);
}

.service-img-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 40%, rgba(10,22,40,.6));
}

.service-body {
    padding: 28px 24px;
}

.service-icon {
    width: 56px;
    height: 56px;
    background: rgba(26,86,219,.08);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--primary);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--primary);
    color: var(--white);
}

.service-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark);
}

.service-body p {
    font-size: .9rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ===== ABOUT ===== */
.about {
    padding: 120px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-visual {
    position: relative;
}

.about-img-wrapper {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-img-wrapper img {
    width: 100%;
    height: 450px;
    object-fit: cover;
}

.about-float-card {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--primary);
    color: var(--white);
    padding: 24px 32px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.about-float-num {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1;
}

.about-float-text {
    font-size: .85rem;
    opacity: .8;
    margin-top: 4px;
}

.about-content .section-title {
    margin-bottom: 24px;
}

.about-text {
    color: var(--gray-500);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-features {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.about-feature-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: rgba(26,86,219,.08);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.about-feature h4 {
    font-size: .95rem;
    font-weight: 600;
    margin-bottom: 2px;
    color: var(--dark);
}

.about-feature p {
    font-size: .85rem;
    color: var(--gray-500);
}

/* ===== PROCESS ===== */
.process {
    padding: 120px 0;
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.process::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(26,86,219,.15), transparent 70%);
    border-radius: 50%;
}

.process .section-title {
    color: var(--white);
}

.process .section-desc {
    color: rgba(255,255,255,.5);
}

.process-grid {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
}

.process-step {
    text-align: center;
    padding: 40px 24px;
    position: relative;
    flex: 1;
    max-width: 240px;
}

.process-num {
    font-size: 3rem;
    font-weight: 900;
    color: rgba(59,130,246,.15);
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    line-height: 1;
}

.process-icon {
    width: 72px;
    height: 72px;
    background: rgba(59,130,246,.1);
    border: 1px solid rgba(59,130,246,.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary-light);
    transition: var(--transition);
}

.process-step:hover .process-icon {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    transform: scale(1.1);
}

.process-step h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.process-step p {
    font-size: .85rem;
    color: rgba(255,255,255,.5);
    line-height: 1.6;
}

.process-connector {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, rgba(59,130,246,.3), rgba(59,130,246,.1));
    margin-top: 76px;
    flex-shrink: 0;
}

/* ===== DOWNLOAD ===== */
.download {
    padding: 120px 0;
    position: relative;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary), #2563eb);
    overflow: hidden;
}

.download-bg {
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="g" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect fill="url(%23g)" width="100" height="100"/></svg>');
}

.download-content {
    position: relative;
    text-align: center;
}

.download-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    color: var(--white);
    margin-bottom: 16px;
}

.download-desc {
    font-size: 1.05rem;
    color: rgba(255,255,255,.7);
    margin-bottom: 48px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.download-actions {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.download-qr .qr-placeholder {
    width: 160px;
    height: 180px;
    background: rgba(255,255,255,.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--white);
    transition: var(--transition);
}

.download-qr .qr-placeholder:hover {
    background: rgba(255,255,255,.15);
    transform: translateY(-4px);
}

.download-qr .qr-placeholder span {
    font-size: .85rem;
    opacity: .8;
}

/* ===== CONTACT ===== */
.contact {
    padding: 120px 0;
    background: var(--gray-100);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.contact-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: rgba(26,86,219,.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary);
}

.contact-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark);
}

.contact-card p {
    font-size: 1rem;
    color: var(--gray-700);
    margin-bottom: 4px;
}

.contact-note {
    font-size: .8rem;
    color: var(--gray-500);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--dark);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    color: var(--white);
    font-weight: 700;
    font-size: 1.1rem;
}

.footer-logo img {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.footer-desc {
    color: rgba(255,255,255,.5);
    font-size: .9rem;
    line-height: 1.7;
}

.footer-links h5 {
    color: var(--white);
    font-size: .9rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    color: rgba(255,255,255,.5);
    font-size: .85rem;
    padding: 6px 0;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-light);
    transform: translateX(4px);
}

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: .8rem;
    color: rgba(255,255,255,.4);
}

.footer-bottom a {
    color: rgba(255,255,255,.4);
    transition: var(--transition);
}

.footer-bottom a:hover {
    color: var(--primary-light);
}

/* ===== SCROLL ANIMATIONS ===== */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .6s ease, transform .6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .about-grid {
        gap: 48px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 22, 40, .98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-top: 1px solid rgba(255,255,255,.08);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-stats {
        gap: 24px;
    }

    .hero-stat-num {
        font-size: 1.5rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-img-wrapper img {
        height: 300px;
    }

    .about-float-card {
        bottom: -10px;
        right: -10px;
        padding: 16px 24px;
    }

    .about-float-num {
        font-size: 1.8rem;
    }

    .about-content .section-title {
        text-align: center;
    }

    .about-content .section-tag {
        display: block;
        text-align: center;
    }

    .process-grid {
        flex-direction: column;
        align-items: center;
    }

    .process-connector {
        width: 2px;
        height: 40px;
        margin: 0;
        background: linear-gradient(180deg, rgba(59,130,246,.3), rgba(59,130,246,.1));
    }

    .process-step {
        max-width: 300px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .download-actions {
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 100px 16px 60px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: .9rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .services, .about, .process, .download, .contact {
        padding: 80px 0;
    }
}