:root {
    --bg-dark: #05070a;
    --gold: #d4af37;
    --gold-light: #f9d976;
    --gold-dark: #aa841e;
    --gold-gradient: linear-gradient(135deg, #f9d976 0%, #d4af37 50%, #aa841e 100%);
    --white: #f0f6fc;
    --dim: #8b949e;
    --card-bg: rgba(15, 20, 28, 0.45);
    --border: rgba(212, 175, 55, 0.12);
    --transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
.logo {
    font-family: 'Noto Serif SC', serif;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Utilities */
.text-center {
    text-align: center;
}

.text-gold {
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.mt-20 {
    margin-top: 20px;
}

.mb-60 {
    margin-bottom: 60px;
}

.flex-row {
    display: flex;
}

.flex-wrap {
    flex-wrap: wrap;
}

.justify-between {
    justify-content: space-between;
}

.flex-center {
    align-items: center;
}

.flex-gap-60 {
    gap: 60px;
}

.flex-gap-80 {
    gap: 80px;
}

.opacity-60 {
    opacity: 0.6;
}

.opacity-40 {
    opacity: 0.4;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 24px 0;
    z-index: 1000;
    background: rgba(5, 7, 10, 0.85);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--dim);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--gold);
}

.cta-nav {
    padding: 10px 24px;
    border: 1px solid var(--gold);
    border-radius: 100px;
    background: rgba(212, 175, 55, 0.05);
    color: var(--white) !important;
}

.nav-mobile-trigger {
    display: none;
    color: var(--gold);
    cursor: pointer;
    padding: 8px;
}

/* Mobile Menu Overlay */
.nav-mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: rgba(5, 7, 10, 0.98);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    padding: 24px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
}

.nav-mobile-menu.active {
    display: block;
}

.nav-mobile-menu a {
    display: block;
    padding: 16px 0;
    color: var(--white);
    text-decoration: none;
    font-size: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-mobile-menu a:last-child {
    border-bottom: none;
}

.nav-mobile-menu a.cta-nav {
    display: inline-block;
    margin-top: 16px;
    text-align: center;
    width: 100%;
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    padding-top: 160px;
    padding-bottom: 100px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    right: -100px;
    width: 70%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    mask-image: linear-gradient(to right, transparent, black 40%, black 60%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 40%, black 60%, transparent);
    opacity: 0.8;
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 100px;
}

.hero-content {
    flex: 1.2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: rgba(212, 175, 55, 0.08);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gold-light);
    margin-bottom: 32px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--gold);
    border-radius: 50%;
}

.pulse {
    animation: badge-pulse 2s infinite;
}

@keyframes badge-pulse {
    0% {
        transform: scale(1);
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.4);
    }

    100% {
        transform: scale(1.5);
        opacity: 0;
        box-shadow: 0 0 0 10px rgba(212, 175, 55, 0);
    }
}

.hero-content h1 {
    font-size: 72px;
    line-height: 1.05;
    margin-bottom: 32px;
    letter-spacing: -0.03em;
}

.hero-description {
    font-size: 20px;
    color: var(--dim);
    margin-bottom: 48px;
    max-width: 580px;
    font-weight: 300;
}

.hero-stats {
    display: flex;
    gap: 60px;
    margin-bottom: 48px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--gold);
}

.stat-label {
    font-size: 12px;
    color: var(--dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-btns {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 18px 44px;
    border-radius: 100px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    text-align: center;
}

.btn-gold {
    background: var(--gold-gradient);
    color: #000;
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.2);
}

.btn-outline {
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--white);
}

.btn:hover {
    transform: translateY(-5px) scale(1.02);
}

.hero-mockup {
    flex: 0.8;
}

.phone-frame {
    width: 320px;
    height: 640px;
    background: #000;
    border: 12px solid #1a1a1a;
    border-radius: 52px;
    padding: 12px;
    box-shadow:
        0 50px 100px rgba(0, 0, 0, 0.9),
        0 0 40px rgba(212, 175, 55, 0.1);
    position: relative;
    overflow: hidden;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #05070a;
    border-radius: 36px;
    position: relative;
    overflow: hidden;
}

.app-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.2;
}

.app-interface {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.app-main-icon {
    width: 80px;
    height: 80px;
    color: var(--gold);
    opacity: 0.6;
    margin-bottom: 24px;
}

.app-status {
    font-size: 12px;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 0.2em;
}

.scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    color: var(--dim);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* Trust Banner */
.trust-banner {
    padding: 60px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    font-weight: 600;
}

.trust-item i {
    width: 16px;
    height: 16px;
    color: var(--gold);
}

/* Features */
section {
    padding: 140px 0;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 48px;
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.section-header p {
    color: var(--dim);
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: minmax(300px, auto);
    gap: 24px;
    margin-top: 80px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 44px;
    padding: 48px;
    transition: var(--transition);
    overflow: hidden;
    position: relative;
}

.large-card {
    grid-column: span 2;
    display: flex;
    align-items: center;
    gap: 40px;
}

.large-card .feature-img-wrapper {
    flex: 1;
}

.large-card .feature-inner {
    flex: 1;
}

.feature-img-wrapper img {
    width: 100%;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.feature-card i {
    width: 44px;
    height: 44px;
    color: var(--gold);
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 26px;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--dim);
    font-size: 15px;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--gold);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

/* Security Architecture */
.security-visual img {
    width: 600px;
    max-width: 100%;
}

.security-text {
    flex: 1;
}

.security-list {
    margin-top: 48px;
}

.security-item {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
}

.item-num {
    font-size: 24px;
    font-weight: 700;
    color: var(--gold);
    width: 50px;
    height: 50px;
    min-width: 50px;
    border: 1px solid var(--border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 175, 55, 0.05);
}

.item-body h4 {
    font-size: 20px;
    margin-bottom: 8px;
}

.item-body p {
    color: var(--dim);
    font-size: 14px;
}

/* Scenarios */
.scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 80px;
}

.scenario-item {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.05) 100%);
    border-radius: 40px;
    padding: 60px 40px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.scenario-item h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--gold-light);
}

.scenario-item p {
    color: var(--dim);
    font-size: 14px;
    line-height: 1.8;
}

/* Platforms */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 80px;
}

.platform-card {
    background: var(--card-bg);
    border-radius: 36px;
    padding: 40px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.platform-card i {
    width: 32px;
    height: 32px;
    color: var(--gold);
}

.status-tag {
    font-size: 10px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--dim);
    text-transform: uppercase;
}

.status-tag.available {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.btn-sm {
    font-size: 12px;
    font-weight: 600;
    color: var(--gold);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.btn-sm:hover {
    border-color: var(--gold);
}

/* FAQ Accordion */
.faq-accordion {
    max-width: 800px;
    margin: 60px auto 0;
}

.faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 20px;
}

.faq-q {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-q span {
    font-size: 18px;
    font-weight: 600;
}

.faq-q i {
    transition: transform 0.3s;
    color: var(--gold);
    min-width: 24px;
}

.faq-item.active .faq-q i {
    transform: rotate(45deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
    color: var(--dim);
    font-size: 15px;
    line-height: 1.8;
}

.faq-item.active .faq-a {
    max-height: 400px;
    padding-bottom: 24px;
}

/* Footer */
.footer {
    padding: 100px 0 40px;
    background: #000;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.footer-nav-col h5 {
    margin-bottom: 24px;
    font-size: 16px;
    color: var(--white);
}

.footer-nav-col a {
    display: block;
    margin-bottom: 12px;
    color: var(--dim);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-nav-col a:hover {
    color: var(--gold);
}

.footer-bottom {
    margin-top: 100px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.15);
    font-size: 12px;
}

/* Animations */
.animate-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s cubic-bezier(0.23, 1, 0.32, 1);
}

.animate-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE STYLES
   ============================================ */

/* Tablet - 1024px */
@media (max-width: 1024px) {
    .container {
        padding: 0 32px;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 60px;
    }

    .hero-description {
        margin: 0 auto 48px;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-btns {
        justify-content: center;
    }

    .hero-bg {
        width: 100%;
        right: 0;
        opacity: 0.2;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .large-card {
        grid-column: span 1;
        flex-direction: column;
    }

    .flex-row.flex-gap-80 {
        flex-direction: column;
        gap: 40px;
    }

    .security-visual img {
        margin: 0 auto;
        display: block;
    }

    .scenario-grid {
        grid-template-columns: 1fr;
    }

    .platform-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Mobile Large - 768px */
@media (max-width: 768px) {
    .container {
        padding: 0 24px;
    }

    /* Navigation */
    .nav-links {
        display: none;
    }

    .nav-mobile-trigger {
        display: flex;
    }

    .navbar {
        padding: 16px 0;
    }

    .logo {
        font-size: 18px;
    }

    .logo i {
        width: 24px;
        height: 24px;
    }

    /* Hero */
    .hero {
        padding-top: 100px;
        padding-bottom: 60px;
        min-height: auto;
    }

    .hero-content h1 {
        font-size: 36px;
        margin-bottom: 24px;
    }

    .hero-badge {
        font-size: 10px;
        padding: 6px 12px;
        margin-bottom: 20px;
    }

    .hero-description {
        font-size: 16px;
        margin-bottom: 32px;
    }

    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
        margin-bottom: 32px;
    }

    .stat-value {
        font-size: 24px;
    }

    .stat-label {
        font-size: 10px;
    }

    .hero-btns {
        flex-direction: column;
        gap: 12px;
    }

    .btn {
        padding: 16px 32px;
        font-size: 14px;
        width: 100%;
    }

    .hero-mockup {
        display: none;
    }

    .scroll-hint {
        display: none;
    }

    /* Trust Banner */
    .trust-banner {
        padding: 32px 0;
    }

    .trust-banner .container {
        gap: 16px;
        justify-content: center;
    }

    .trust-item {
        font-size: 11px;
        gap: 6px;
    }

    .trust-item i {
        width: 14px;
        height: 14px;
    }

    /* Sections */
    section {
        padding: 80px 0;
    }

    .section-header h2 {
        font-size: 28px;
        margin-bottom: 16px;
    }

    .section-header p {
        font-size: 14px;
    }

    .section-tag {
        font-size: 10px;
        letter-spacing: 0.2em;
    }

    /* Feature Cards */
    .feature-grid {
        margin-top: 40px;
        gap: 16px;
    }

    .feature-card {
        padding: 32px 24px;
        border-radius: 28px;
    }

    .feature-card h3 {
        font-size: 20px;
    }

    .feature-card p {
        font-size: 14px;
    }

    .feature-card i {
        width: 36px;
        height: 36px;
        margin-bottom: 16px;
    }

    .large-card {
        gap: 24px;
    }

    .feature-card:hover {
        transform: none;
    }

    /* Security */
    .security-item {
        gap: 16px;
        margin-bottom: 28px;
    }

    .item-num {
        font-size: 18px;
        width: 40px;
        height: 40px;
        min-width: 40px;
    }

    .item-body h4 {
        font-size: 16px;
    }

    .item-body p {
        font-size: 13px;
    }

    /* Scenarios */
    .scenario-grid {
        margin-top: 40px;
        gap: 16px;
    }

    .scenario-item {
        padding: 40px 24px;
        border-radius: 24px;
    }

    .scenario-item h4 {
        font-size: 18px;
    }

    .scenario-item p {
        font-size: 13px;
    }

    /* Platforms */
    .platform-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
        margin-top: 40px;
    }

    .platform-card {
        padding: 24px 16px;
        border-radius: 24px;
        gap: 12px;
    }

    .platform-card h4 {
        font-size: 14px;
    }

    .platform-card i {
        width: 28px;
        height: 28px;
    }

    .btn-sm {
        font-size: 11px;
    }

    /* FAQ */
    .faq-accordion {
        margin-top: 40px;
    }

    .faq-q {
        padding: 20px 0;
        gap: 16px;
    }

    .faq-q span {
        font-size: 15px;
        flex: 1;
    }

    .faq-a {
        font-size: 14px;
    }

    /* Footer */
    .footer {
        padding: 60px 0 32px;
    }

    .footer-top {
        flex-direction: column;
        gap: 40px;
    }

    .footer-nav {
        flex-direction: column;
        gap: 32px;
    }

    .footer-bottom {
        margin-top: 40px;
        font-size: 11px;
    }

    /* Digital Avatar Section Mobile */
    .avatar-preview .container > div {
        flex-direction: column !important;
        gap: 40px !important;
        text-align: center;
    }

    .avatar-preview h2 {
        font-size: 28px !important;
    }

    .avatar-preview p {
        font-size: 15px !important;
    }

    .avatar-preview [style*="display: flex"][style*="flex-wrap: wrap"][style*="gap: 12px"] {
        justify-content: center;
    }

    .avatar-preview [style*="display: flex"][style*="align-items: center"][style*="gap: 16px"] {
        flex-direction: column !important;
    }

    .avatar-preview [style*="width: 280px"] {
        width: 200px !important;
        height: 200px !important;
    }
}

/* Mobile Small - 480px */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-content h1 {
        font-size: 28px;
    }

    .hero-stats {
        justify-content: space-around;
    }

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

    .section-header h2 {
        font-size: 24px;
    }

    .feature-card {
        padding: 24px 20px;
    }

    .feature-card h3 {
        font-size: 18px;
    }

    .platform-card {
        padding: 20px 12px;
    }

    .scenario-item {
        padding: 32px 20px;
    }

    .faq-q span {
        font-size: 14px;
    }

    .mb-60 {
        margin-bottom: 32px;
    }
}

/* Touch Device Optimizations */
@media (hover: none) {
    .feature-card:hover,
    .btn:hover {
        transform: none;
    }
}