:root{
    --color-background: #f8f9fb;
    --color-primary: #0A66FF;
    --color-primary-light: #3B82F6;
    --color-primary-dark: #1E40AF;
    --color-primary-darker: #1E3A8A;
    --color-text-on-primary: #FFFFFF;
    --color-text: #1f2937;
    --color-text-secondary: #6b7280;
    --color-grid: rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(145deg, #0A66FF, #1e40af);
    --gradient-title: linear-gradient(135deg, #0A66FF, #3B82F6, #1E40AF);
    --gradient-glass: linear-gradient(145deg, rgba(255,255,255,0.25), rgba(255,255,255,0.1));
    --glass-border: rgba(255,255,255,0.18);
    --glass-backdrop: rgba(255,255,255,0.12);
    --z-index-background: 0;
    --z-index-default: 10;
    --size-theme-toggle: 50px;
    --radius-button: 12px;
    --radius-hero: 16px;
    --shadow-button-light: 0 4px 15px rgba(10, 102, 255, 0.3), 0 2px 6px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    --shadow-button-hover-light: 0 8px 25px rgba(10, 102, 255, 0.4), 0 4px 12px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    --shadow-button-active-light: 0 2px 8px rgba(10, 102, 255, 0.5), 0 1px 3px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    --shadow-button-dark: 0 4px 15px rgba(239, 68, 68, 0.3), 0 2px 6px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    --shadow-button-hover-dark: 0 8px 25px rgba(239, 68, 68, 0.4), 0 4px 12px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.25);
    --shadow-button-active-dark: 0 2px 8px rgba(239, 68, 68, 0.5), 0 1px 3px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    --shadow-glass: 0 4px 20px rgba(10, 102, 255, 0.15), 0 2px 10px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    --shadow-glass-hover: 0 8px 30px rgba(10, 102, 255, 0.25), 0 4px 15px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    --transition-smooth: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --font-family-primary: 'Manshoor', sans-serif;
    --font-family-main : 'Yekan Bakh', sans-serif;

    --intro-color-text: #1f2937;
    --intro-color-text-secondary: #6b7280;
    --intro-color-accent: #0A66FF;
    --intro-color-accent-light: #3B82F6;
    --intro-shadow-card: 0 4px 20px rgba(10, 102, 255, 0.12), 0 2px 10px rgba(0, 0, 0, 0.06);
    --intro-shadow-card-hover: 0 8px 30px rgba(10, 102, 255, 0.2), 0 4px 15px rgba(0, 0, 0, 0.1);
    --intro-border-color: rgba(10, 102, 255, 0.15);
    --intro-glow-color: rgba(10, 102, 255, 0.3);

    --feature-bg: var(--color-background);
    --feature-card-bg: rgba(255, 255, 255, 0.7);
    --feature-card-border: rgba(10, 102, 255, 0.1);
    --feature-card-shadow: 0 8px 32px rgba(10, 102, 255, 0.08);
    --feature-card-shadow-hover: 0 16px 48px rgba(10, 102, 255, 0.15);
    --feature-accent: var(--color-primary);
    --feature-accent-light: var(--color-primary-light);
    --feature-text: var(--color-text);
    --feature-text-secondary: var(--color-text-secondary);
    --feature-icon-bg: linear-gradient(145deg, var(--color-primary), var(--color-primary-dark));
    --feature-glow: rgba(10, 102, 255, 0.2);
    --feature-icon-shadow: 0 4px 15px rgba(10, 102, 255, 0.3);
    --feature-icon-shadow-hover: 0 4px 25px rgba(10, 102, 255, 0.5);
    --feature-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --feature-acitve-card-shadow: 0 24px 70px rgba(10, 102, 255, 0.18),
    0 10px 30px rgba(0, 0, 0, 0.18);
    --feature-active-card-border: rgba(10, 102, 255, 0.25);
    --feature-before-background :
        radial-gradient(ellipse 70% 45% at 50% 20%, var(--feature-glow), transparent 65%),
        radial-gradient(ellipse 55% 35% at 20% 80%, rgba(10, 102, 255, 0.05), transparent 70%),
        radial-gradient(ellipse 55% 35% at 80% 80%, rgba(10, 102, 255, 0.04), transparent 70%);

    --go-surface: rgba(255, 255, 255, 0.72);
    --go-surface-border: rgba(10, 102, 255, 0.14);
    --go-surface-shadow: 0 18px 60px rgba(10, 102, 255, 0.10);
    --go-muted: #6b7280;
    --go-privacy-bg: rgba(10, 102, 255, 0.08);
}

.Dark-Theme {
    --color-background: #0f0f0f;
    --color-primary: #EF4444;
    --color-primary-light: #F87171;
    --color-primary-dark: #DC2626;
    --color-primary-darker: #B91C1C;
    --color-grid: rgba(255, 255, 255, 0.08);
    --gradient-primary: linear-gradient(145deg, #EF4444, #DC2626);
    --gradient-title: linear-gradient(135deg, #EF4444, #F87171, #DC2626);
    --shadow-button: var(--shadow-button-dark);
    --shadow-button-hover: var(--shadow-button-hover-dark);
    --shadow-button-active: var(--shadow-button-active-dark);

    --intro-color-text: #f9fafb;
    --intro-color-text-secondary: #9ca3af;
    --intro-color-accent: #EF4444;
    --intro-color-accent-light: #F87171;
    --intro-shadow-card: 0 4px 20px rgba(239, 68, 68, 0.15), 0 2px 10px rgba(0, 0, 0, 0.3);
    --intro-shadow-card-hover: 0 8px 30px rgba(239, 68, 68, 0.25), 0 4px 15px rgba(0, 0, 0, 0.4);
    --intro-border-color: rgba(239, 68, 68, 0.2);
    --intro-glow-color: rgba(239, 68, 68, 0.4);

    --feature-bg: var(--color-background);
    --feature-card-bg: rgba(30, 30, 30, 0.6);
    --feature-card-border: rgba(239, 68, 68, 0.15);
    --feature-card-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --feature-card-shadow-hover: 0 16px 48px rgba(239, 68, 68, 0.2);
    --feature-accent: var(--color-primary);
    --feature-accent-light: var(--color-primary-light);
    --feature-text: #f9fafb;
    --feature-text-secondary: #9ca3af;
    --feature-icon-bg: linear-gradient(145deg, var(--color-primary), var(--color-primary-dark));
    --feature-glow: rgba(239, 68, 68, 0.25);
    --feature-icon-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
    --feature-icon-shadow-hover: 0 4px 25px rgba(239, 68, 68, 0.5);
    --feature-acitve-card-shadow: 0 24px 70px rgba(255, 10, 10, 0.18),
    0 10px 30px rgba(0, 0, 0, 0.18);
    --feature-active-card-border: rgba(255, 10, 10, 0.25);
    --feature-before-background :
        radial-gradient(ellipse 70% 45% at 50% 20%, var(--feature-glow), transparent 65%),
        radial-gradient(ellipse 55% 35% at 20% 80%, rgba(255, 10, 10, 0.05), transparent 70%),
        radial-gradient(ellipse 55% 35% at 80% 80%, rgba(255, 10, 10, 0.04), transparent 70%);

    --go-surface: rgba(18, 18, 18, 0.78);
    --go-surface-border: rgba(239, 68, 68, 0.18);
    --go-surface-shadow: 0 18px 60px rgba(0, 0, 0, 0.38);
    --go-muted: #9ca3af;
    --go-privacy-bg: rgba(239, 68, 68, 0.12);
}

* {
    user-select: none;
    -webkit-user-drag: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html{
    scroll-behavior: smooth;
    overflow: hidden;
}

body {
    background-color: var(--color-background);
    overflow-x: hidden;
    scroll-behavior: smooth;
}

img, video {
    -webkit-touch-callout: none;
}

button {
    cursor: pointer;
}

section {
    scroll-snap-align: start;
    scroll-snap-stop: always;
    min-height: 100vh;
}

body.theme-transitioning {
    transition: background-color 0.6s ease !important;
}

header {
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 100vh;
    padding: 2vh 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: transparent;
}

header .site-name a {
    text-decoration: none;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

header .site-name {
    font-family: var(--font-family-primary);
    font-size: 34px;
}

header #theme-toggle {
    border: none;
    border-radius: var(--radius-button);
    width: clamp(var(--size-theme-toggle), 6vw, var(--size-theme-toggle));
    height: clamp(var(--size-theme-toggle), 6vw, var(--size-theme-toggle));
    font-size: 20px;
    transition: var(--transition-smooth);
    background: var(--gradient-primary);
    color: var(--color-text-on-primary);
    position: relative;
    box-shadow: var(--shadow-button);
    overflow: hidden;
}

header #theme-toggle:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-button-hover);
    background: linear-gradient(145deg, var(--color-primary-darker), var(--color-primary));
}

header #theme-toggle:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: var(--shadow-button-active);
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

header #theme-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

header #theme-toggle:hover::before {
    left: 100%;
}

.hero-section {
    position: relative;
    top: 0;
    left: 0;
    right: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-index-background);
    background-image:
        linear-gradient(to right, var(--color-grid) 1px, transparent 1px),
        linear-gradient(to bottom, var(--color-grid) 1px, transparent 1px);
    background-size: 32px 32px;
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000 30%, transparent 70%);
    mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000 30%, transparent 70%);
}

.hero-content {
    z-index: var(--z-index-default);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    padding: 3rem 2rem;
    text-align: center;
    max-width: 700px;
    width: 90%;
}

.hero-title {
    font-family: 'Aviny', sans-serif;
    font-size: clamp(42px, 7vw, 80px);
    font-weight: 700;
    background: var(--gradient-title);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin: 0;
    transition: var(--transition-smooth);
}

.hero-title .site-name {
    font-family: var(--font-family-primary);
    font-size: 1.1em;
}

.call-to-action {
    display: flex;
    justify-content: center;
}

.cta-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 40px;
    font-family: var(--font-family-main);
    font-size: 20px;
    font-weight: 800;
    color: var(--color-text-on-primary);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-button);
    box-shadow: var(--shadow-button);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.cta-btn .fa-solid {
    font-size: 16px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.cta-btn:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-button-hover);
}

.cta-btn:hover .fa-solid {
    transform: translateX(6px);
}

.cta-btn:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: var(--shadow-button-active);
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.cta-btn:hover::before {
    left: 100%;
}

.scroll-cta {
    position: absolute;
    bottom: clamp(1.5rem, 8vh, 2rem);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 1;
    color: #6b7280;
}

.scroll-cta .text {
    font-size: 0.75rem;
    font-family: var(--font-family-main);
}

.scroll-cta .scroll-icon .mouse {
    width: 24px;
    height: 40px;
    border: 2px solid #4b5563;
    border-radius: 9999px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
    overflow: hidden;
}

.scroll-cta .scroll-icon .wheel {
    width: 4px;
    height: 8px;
    background: #6b7280;
    border-radius: 9999px;
    animation: scrollWheel 1s infinite alternate;
}

@keyframes scrollWheel {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(4px);
    }
}

.backToTop {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 1000;
    display: none;
}

.backToTop button {
    width: clamp(50px, 6vw, 50px);
    height: clamp(50px, 6vw, 50px);
    border: none;
    border-radius: var(--radius-button);
    background: var(--gradient-primary);
    color: var(--color-text-on-primary);
    font-size: 18px;
    box-shadow: var(--shadow-button);
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.backToTop button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-button-hover);
}

.backToTop button:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: var(--shadow-button-active);
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.backToTop button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.backToTop button:hover::before {
    left: 100%;
}

.introduction-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem;
    background: var(--color-background);
    overflow: hidden;
    z-index: 2;
    width: 100%;
}

.introduction-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--intro-glow-color) 0%, transparent 70%);
    opacity: 0.5;
    pointer-events: none;
    z-index: -1;
}

.introduction-title {
    font-family: var(--font-family-primary);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    color: var(--intro-color-text);
    text-align: center;
    margin-bottom: 1.5rem;
    position: relative;
    transition: var(--transition-smooth);
}

.introduction-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.introduction-section:hover .introduction-title::after {
    width: 120px;
}

.introduction-description {
    font-family: var(--font-family-main);
    font-size: clamp(16px, 2.5vw, 20px);
    color: var(--intro-color-text-secondary);
    text-align: center;
    max-width: 600px;
    line-height: 1.8;
    margin-bottom: 4rem;
    transition: var(--transition-smooth);
}

.introduction-price-symbol {
    position: relative;
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.introduction-price-symbol:hover {
    transform: scale(1.05);
}

.symbol-ring {
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 3px solid var(--intro-border-color);
    animation: ringPulse 2s ease-in-out infinite;
    transition: var(--transition-smooth);
}

.introduction-price-symbol:hover .symbol-ring {
    border-color: var(--intro-color-accent);
    box-shadow: 0 0 30px var(--intro-glow-color);
}

@keyframes ringPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.7;
    }
}

.symbol-center {
    position: absolute;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--intro-shadow-card);
    animation: centerFloat 3s ease-in-out infinite;
    z-index: 2;
    transition: var(--transition-smooth);
}

.introduction-price-symbol:hover .symbol-center {
    box-shadow: var(--intro-shadow-card-hover);
}

@keyframes centerFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

.symbol-icon {
    font-size: 36px;
    color: var(--color-text-on-primary);
    animation: iconRotate 4s linear infinite;
}

@keyframes iconRotate {
    0% {
        transform: rotateY(0deg);
    }
    100% {
        transform: rotateY(360deg);
    }
}

.symbol-orbit {
    position: absolute;
    width: 150px;
    height: 150px;
    animation: orbitRotate 8s linear infinite;
}

.introduction-price-symbol:hover .symbol-orbit {
    animation-duration: 4s;
}

@keyframes orbitRotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.orbit-item {
    position: absolute;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-background);
    border: 2px solid var(--intro-color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--intro-color-accent);
    box-shadow: var(--intro-shadow-card);
    transition: var(--transition-smooth);
}

.introduction-price-symbol:hover .orbit-item {
    border-color: var(--intro-color-accent-light);
    color: var(--intro-color-accent-light);
    transform: scale(1.1);
}

.orbit-item:nth-child(1) {
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
}

.orbit-item:nth-child(2) {
    bottom: -18px;
    left: 50%;
    transform: translateX(-50%);
}

.orbit-item:nth-child(3) {
    right: -18px;
    top: 50%;
    transform: translateY(-50%);
}

.orbit-item:nth-child(4) {
    left: -18px;
    top: 50%;
    transform: translateY(-50%);
}

.symbol-dots {
    position: absolute;
    width: 100%;
    height: 100%;
    animation: dotsRotate 12s linear infinite;
}

@keyframes dotsRotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.dot {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--intro-color-accent);
    opacity: 0.5;
}

.dot:nth-child(1) { top: 10%; left: 20%; }
.dot:nth-child(2) { top: 30%; right: 10%; }
.dot:nth-child(3) { bottom: 20%; right: 25%; }
.dot:nth-child(4) { bottom: 10%; left: 15%; }

.sparkle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--intro-color-accent-light);
    border-radius: 50%;
    animation: sparkle 1.5s ease-in-out infinite;
}

.sparkle:nth-child(1) {
    top: 20%;
    left: 30%;
    animation-delay: 0s;
}

.sparkle:nth-child(2) {
    top: 60%;
    right: 20%;
    animation-delay: 0.5s;
}

.sparkle:nth-child(3) {
    bottom: 30%;
    left: 25%;
    animation-delay: 1s;
}

@keyframes sparkle {
    0%, 100% {
        opacity: 0;
        transform: scale(0);
    }
    50% {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 20px;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--color-background);
    border-radius: 16px;
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    font-size: 18px;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.close-btn:hover {
    transform: rotate(90deg) scale(1.1);
    background: #dc2626;
}

.modal-body {
    width: 100%;
    height: 100%;
    overflow-y: auto;
}

.feature-section {
    position: relative;
    min-height: 100svh;
    min-height: 100dvh;
    padding: clamp(4.5rem, 8vh, 6rem) 1.5rem;
    padding-bottom: calc(clamp(4.5rem, 8vh, 6rem) + env(safe-area-inset-bottom, 0px));
    background: var(--feature-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    z-index: 2;
    box-sizing: border-box;
}

.feature-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--feature-before-background);
    pointer-events: none;
    z-index: 0;
}

.feature-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(var(--color-grid) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.22;
    pointer-events: none;
    z-index: 0;
}

.feature-carousel {
    position: relative;
    width: min(1180px, 100%);
    height: clamp(420px, 58vh, 560px);
    perspective: 1500px;
    transform-style: preserve-3d;
    touch-action: pan-y;
    cursor: grab;
    z-index: 1;
    outline: none;
    contain: layout paint style;
}

.feature-carousel.is-dragging {
    cursor: grabbing;
}

.feature-carousel-stage {
    position: absolute;
    inset: 0;
    transform-style: preserve-3d;
    contain: layout paint style;
}

.feature-card {
    position: absolute;
    top: 50%;
    left: 50%;
    width: min(430px, 78vw);
    min-height: 320px;
    padding: clamp(1.2rem, 2vw, 2rem);
    border-radius: 28px;
    background: color-mix(in srgb, var(--feature-card-bg) 92%, transparent);
    border: 1px solid var(--feature-card-border);
    box-shadow: var(--feature-card-shadow);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transform-style: preserve-3d;
    backface-visibility: hidden;
    will-change: transform, opacity;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    overflow: hidden;
    transition:
        transform 420ms cubic-bezier(0.22, 1, 0.36, 1),
        opacity 240ms ease,
        box-shadow 240ms ease,
        border-color 240ms ease;
}

.feature-carousel.is-dragging .feature-card {
    transition: none !important;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(140deg, rgba(255,255,255,0.10), transparent 30%),
        radial-gradient(circle at top right, rgba(255,255,255,0.08), transparent 35%);
    pointer-events: none;
}

.feature-card::after {
    content: '';
    position: absolute;
    inset: auto -30% -45% auto;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, var(--feature-glow), transparent 70%);
    pointer-events: none;
    opacity: 0.45;
}

.feature-card.is-active {
    box-shadow: var(--feature-acitve-card-shadow);
    border-color: var(--feature-active-card-border);
}

.feature-card .card-head-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: var(--feature-icon-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--feature-icon-shadow);
    transition: transform 240ms ease, box-shadow 240ms ease;
    flex-shrink: 0;
}

.feature-card .card-head-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.28), transparent);
    transform: translateX(-120%);
    transition: transform 500ms ease;
}

.feature-card.is-active .card-head-icon::before {
    transform: translateX(120%);
}

.feature-card .card-head-icon span {
    font-size: 24px;
    color: var(--color-text-on-primary);
    position: relative;
    z-index: 1;
}

.feature-card .card-title .title {
    font-family: var(--font-family-main);
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    font-weight: 700;
    color: var(--feature-text);
    line-height: 1.5;
    margin: 0;
}

.feature-card .card-description .description {
    font-family: var(--font-family-main);
    font-size: clamp(0.92rem, 1.2vw, 1rem);
    color: var(--feature-text-secondary);
    line-height: 1.8;
    margin: 0;
}

.feature-card.is-active .card-title .title {
    color: var(--feature-accent);
}

.feature-card.is-active .card-description .description {
    color: var(--feature-text);
}

.feature-card.is-active .card-head-icon {
    transform: translateY(-2px) scale(1.03);
    box-shadow: var(--feature-icon-shadow-hover);
}
.go-section{
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(4rem, 8vw, 6rem) 1.25rem;
    padding-bottom: 90px;
    overflow: hidden;
    background:
        radial-gradient(circle at top, var(--go-privacy-bg) 0%, transparent 45%),
        linear-gradient(180deg, color-mix(in srgb, var(--color-background) 96%, var(--color-primary) 4%) 0%, var(--color-background) 100%);
    z-index: 2;
}

.go-section::before{
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, var(--color-grid) 1px, transparent 1px),
        linear-gradient(to bottom, var(--color-grid) 1px, transparent 1px);
    background-size: 34px 34px;
    opacity: 0.32;
    -webkit-mask-image: radial-gradient(circle at center, #000 35%, transparent 78%);
    mask-image: radial-gradient(circle at center, #000 35%, transparent 78%);
    pointer-events: none;
}

.go-section__backdrop{
    position: absolute;
    inset: auto;
    width: min(62vw, 760px);
    height: min(62vw, 760px);
    border-radius: 50%;
    background: radial-gradient(circle, var(--go-privacy-bg) 0%, transparent 70%);
    filter: blur(8px);
    opacity: 0.85;
    pointer-events: none;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.go-section__content{
    position: relative;
    width: min(920px, 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.4rem;
    padding: clamp(1.5rem, 3vw, 2.5rem);
    border: 1px solid var(--go-surface-border);
    border-radius: 32px;
    background: var(--go-surface);
    box-shadow: var(--go-surface-shadow);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.go-section__copy{
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.go-section__eyebrow{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 1rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--color-primary) 12%, transparent);
    color: var(--color-primary);
    border: 1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);
    font-family: var(--font-family-main);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.go-section__title{
    margin: 0;
    font-size: clamp(2rem, 4.2vw, 3.35rem);
    line-height: 1.2;
    color: var(--intro-color-text);
    text-align: center;
    font-family: var(--font-family-primary);
}

.go-section__description{
    max-width: 680px;
    margin: 0;
    color: var(--go-muted);
    font-family: var(--font-family-main);
    font-size: clamp(1rem, 1.8vw, 1.12rem);
    line-height: 1.9;
    text-align: center;
}

.go-section__action{
    position: relative;
    width: 100%;
    margin-top: 0.5rem;
}

.go-section__btn{
    min-width: min(320px, 100%);
    padding-inline: 2.2rem;
}

.go-footer{
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1.2rem 1rem calc(1.2rem + env(safe-area-inset-bottom, 0px));
    display: flex;
    justify-content: center;
    align-items: center;

    background: linear-gradient(
        145deg,
        rgba(255,255,255,0.25),
        rgba(255,255,255,0.08)
    );
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);

    border-top: 1px solid var(--go-surface-border);
}

.Dark-Theme .go-footer{
    background: linear-gradient(
        145deg,
        rgba(30,30,30,0.6),
        rgba(20,20,20,0.4)
    );
}

.go-footer p{
    margin: 0;
    max-width: 800px;
    text-align: center;
    font-family: var(--font-family-main);
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--go-muted);
}

.go-section .cta-btn{
    box-shadow: 0 14px 30px rgba(10, 102, 255, 0.18), 0 4px 12px rgba(0, 0, 0, 0.08);
}

.Dark-Theme .go-section .cta-btn{
    box-shadow: 0 14px 30px rgba(239, 68, 68, 0.18), 0 4px 12px rgba(0, 0, 0, 0.22);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    .feature-section {
        padding: 4.5rem 1rem;
        padding-bottom: calc(4.5rem + env(safe-area-inset-bottom, 0px));
    }

    .feature-carousel {
        height: clamp(390px, 54vh, 500px);
    }

    .feature-card {
        width: min(390px, 82vw);
        min-height: 300px;
        border-radius: 24px;
    }
}

@media (max-width: 768px) {
    header {
        gap: 5rem !important;
        padding: 1.5vh 1rem;
    }

    .modal-content {
        max-height: 85vh;
        border-radius: 12px;
        max-width: 100%;
    }
    .modal-overlay {
        padding: 10px;
        align-items: center;
    }
    .feature-section {
        padding: 3rem 1rem;
        min-height: auto;
    }

    .feature-section {
        min-height: 100svh;
        padding: 4rem 1rem;
        padding-bottom: calc(4rem + env(safe-area-inset-bottom, 0px));
    }

    .feature-carousel {
        height: clamp(360px, 68vh, 470px);
    }

    .feature-card {
        width: min(340px, 86vw);
        min-height: 280px;
        border-radius: 22px;
        padding: 1.15rem;
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
    }

    .feature-card .card-head-icon {
        width: 52px;
        height: 52px;
        border-radius: 16px;
    }

    .feature-card .card-head-icon span {
        font-size: 20px;
    }

    .go-section{
        padding: 3.5rem 1rem;
    }

    .go-section__content{
        padding: 1.35rem;
        border-radius: 24px;
        gap: 1.1rem;
    }

    .go-section__eyebrow{
        font-size: 0.82rem;
        padding: 0.5rem 0.9rem;
    }

    .go-section__description{
        font-size: 0.98rem;
    }

    .go-section__btn{
        width: 100%;
        min-width: 0;
        padding-inline: 1.5rem;
    }

    .go-footer{
        padding-top: 0.9rem;
    }

    .go-footer p{
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) and (max-height: 850px) {
    .scroll-cta {
        bottom: clamp(4rem, 12vh, 6rem);
        padding-bottom: max(env(safe-area-inset-bottom, 4rem), 4rem);
    }
}

@media (max-height: 700px) {
    .scroll-cta {
        bottom: clamp(5rem, 15vh, 7rem);
    }
}

@media (min-width: 769px) {
    header {
        gap: 100vh;
        padding: 2vh 0;
    }
    .scroll-cta{
        bottom: 4rem;
    }
}

@media (max-width: 480px) {
    .feature-section {
        min-height: 100svh;
        padding: 3.75rem 0.85rem;
        padding-bottom: calc(3.75rem + env(safe-area-inset-bottom, 0px));
    }

    .feature-carousel {
        height: clamp(340px, 66vh, 440px);
    }

    .feature-card {
        width: min(300px, 88vw);
        min-height: 260px;
        padding: 1rem;
    }

    .feature-card .card-head-icon {
        width: 46px;
        height: 46px;
        border-radius: 14px;
    }

    .feature-card .card-head-icon span {
        font-size: 18px;
    }

    .go-section{
        padding: 3rem 0.85rem;
    }

    .go-section__content{
        padding: 1.1rem;
        border-radius: 20px;
    }

    .go-section__title{
        font-size: clamp(1.7rem, 8vw, 2.2rem);
    }

    .go-section__description{
        line-height: 1.8;
    }

    .go-footer p{
        font-size: 0.85rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .feature-card,
    .feature-card .card-head-icon,
    .feature-card .card-head-icon::before {
        transition: none !important;
        animation: none !important;
    }
    .glass-footer {
        background: rgba(10, 10, 10, 0.35);
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
}