/* ========================================
   DSM Website - Apple 2026 UI/UX Standards
   Ultra-Refined, Premium Design System
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ========================================
   CSS Reset & Base
   ======================================== */

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

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

:root {
    /* Color System - Apple 2026 Refined Palette */
    --color-bg: #000000;
    --color-surface: #0A0A0A;
    --color-surface-elevated: #1C1C1E;
    --color-surface-raised: #2C2C2E;

    /* Text Hierarchy - WCAG AAA Compliant */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #A1A1A6;
    --color-text-tertiary: #6E6E73;
    --color-text-quaternary: #48484A;

    /* Accent System */
    --color-accent: #30D158;
    --color-accent-hover: #32D95A;
    --color-accent-pressed: #2BB84D;
    --color-accent-subtle: rgba(48, 209, 88, 0.12);
    --color-accent-glow: rgba(48, 209, 88, 0.4);

    /* Borders - Ultra Subtle */
    --color-border-subtle: rgba(255, 255, 255, 0.06);
    --color-border-medium: rgba(255, 255, 255, 0.10);
    --color-border-strong: rgba(255, 255, 255, 0.18);

    /* Overlays */
    --color-overlay-light: rgba(255, 255, 255, 0.05);
    --color-overlay-medium: rgba(255, 255, 255, 0.08);

    /* Typography - SF Pro Inspired */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Segoe UI', system-ui, sans-serif;

    /* Spacing - Precise 4pt Grid (Apple Standard) */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-7: 28px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-14: 56px;
    --space-16: 64px;
    --space-18: 72px;
    --space-20: 80px;
    --space-24: 96px;
    --space-28: 112px;
    --space-32: 128px;
    --space-40: 160px;
    --space-48: 192px;

    /* Border Radius - Apple 2026 System */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-3xl: 28px;

    /* Shadows - Layered Depth System */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.24), 0 1px 2px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.24), 0 2px 4px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.32), 0 4px 8px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.40), 0 6px 12px rgba(0, 0, 0, 0.20);
    --shadow-2xl: 0 20px 40px rgba(0, 0, 0, 0.48), 0 10px 20px rgba(0, 0, 0, 0.24);

    /* Transitions - Apple Standard Easing */
    --ease-smooth: cubic-bezier(0.25, 0.1, 0.25, 1);
    --ease-in: cubic-bezier(0.42, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.58, 1);
    --ease-in-out: cubic-bezier(0.42, 0, 0.58, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    --duration-instant: 100ms;
    --duration-fast: 200ms;
    --duration-base: 300ms;
    --duration-slow: 400ms;
    --duration-slower: 600ms;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: 17px;
    line-height: 1.52941;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: 'kern' 1;
    font-kerning: normal;
}

/* ========================================
   Accessibility - Skip to Content
   ======================================== */

.skip-to-content {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-accent);
    color: var(--color-bg);
    padding: 12px 20px;
    text-decoration: none;
    font-weight: 600;
    z-index: 10000;
    border-radius: 0 0 8px 0;
    transition: top var(--duration-fast) var(--ease-out);
}

.skip-to-content:focus {
    top: 0;
    outline: 3px solid var(--color-accent-hover);
    outline-offset: 0;
}

/* ========================================
   Typography - Apple 2026 System
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.05;
    color: var(--color-text-primary);
    letter-spacing: -0.022em;
    margin: 0;
}

h1 {
    font-size: clamp(40px, 5.5vw, 76px);
    font-weight: 800;
    letter-spacing: -0.028em;
    line-height: 1.02;
}

h2 {
    font-size: clamp(36px, 4.5vw, 60px);
    font-weight: 700;
    letter-spacing: -0.024em;
    line-height: 1.04;
}

h3 {
    font-size: clamp(28px, 3.2vw, 40px);
    font-weight: 600;
    letter-spacing: -0.020em;
    line-height: 1.08;
}

h4 {
    font-size: clamp(22px, 2.4vw, 28px);
    font-weight: 600;
    letter-spacing: -0.016em;
    line-height: 1.14;
}

/* Body Text */
.text-large {
    font-size: 21px;
    line-height: 1.47619;
    letter-spacing: 0.011em;
}

.text-body {
    font-size: 17px;
    line-height: 1.52941;
    letter-spacing: -0.022em;
}

.text-small {
    font-size: 15px;
    line-height: 1.46667;
    letter-spacing: -0.016em;
}

.text-caption {
    font-size: 13px;
    line-height: 1.38462;
    letter-spacing: -0.008em;
}

p {
    margin: 0;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: opacity var(--duration-fast) var(--ease-out);
}

a:hover {
    opacity: 0.8;
}

a:active {
    opacity: 0.6;
}

a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ========================================
   Container System
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-10);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-12);
    }
}

/* ========================================
   Navigation - Apple 2026 Standards
   ======================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.72);
    backdrop-filter: saturate(200%) blur(24px);
    -webkit-backdrop-filter: saturate(200%) blur(24px);
    border-bottom: 0.5px solid var(--color-border-subtle);
    z-index: 9999;
    transition: background-color var(--duration-base) var(--ease-out);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 44px;
}

.nav-logo {
    font-size: 21px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.022em;
}

.nav-menu {
    display: none;
    list-style: none;
    align-items: center;
    gap: var(--space-12);
}

.nav-menu li a {
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: -0.016em;
    transition: color var(--duration-fast) var(--ease-out);
}

.nav-menu li a:hover {
    color: var(--color-text-primary);
}

.nav-cta {
    padding: 6px 14px;
    background-color: var(--color-accent);
    color: var(--color-bg) !important;
    font-weight: 600;
    border-radius: var(--radius-xl);
    transition: all var(--duration-fast) var(--ease-out);
}

.nav-cta:hover {
    background-color: var(--color-accent-hover) !important;
    transform: scale(1.008);
}

.nav-cta:active {
    background-color: var(--color-accent-pressed) !important;
    transform: scale(0.995);
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background-color: var(--color-text-primary);
    border-radius: 1px;
    transition: all var(--duration-base) var(--ease-smooth);
}

@media (min-width: 768px) {
    .nav-container {
        padding: 0 var(--space-8);
        min-height: 52px;
    }

    .nav-menu {
        display: flex;
    }

    .nav-toggle {
        display: none;
    }
}

/* ========================================
   Button System - Apple 2026
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 22px;
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.022em;
    border-radius: var(--radius-3xl);
    border: none;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
    text-decoration: none;
    min-height: 52px;
    white-space: nowrap;
    position: relative;
}

.btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none !important;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg);
    box-shadow: 0 4px 14px rgba(48, 209, 88, 0.32);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-accent-hover);
    box-shadow: 0 6px 20px rgba(48, 209, 88, 0.40);
    transform: scale(1.008);
}

.btn-primary:active:not(:disabled) {
    background-color: var(--color-accent-pressed);
    box-shadow: 0 2px 8px rgba(48, 209, 88, 0.28);
    transform: scale(0.995);
}

.btn-primary:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

.btn-secondary {
    background-color: var(--color-surface-elevated);
    color: var(--color-text-primary);
    border: 0.5px solid var(--color-border-medium);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-surface-raised);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-sm);
    transform: scale(1.008);
}

.btn-secondary:active:not(:disabled) {
    background-color: var(--color-surface-elevated);
    transform: scale(0.995);
}

.btn-secondary:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

.btn-tertiary {
    background-color: transparent;
    color: var(--color-accent);
    border: none;
    box-shadow: none;
    padding: 14px 18px;
}

.btn-tertiary:hover:not(:disabled) {
    background-color: var(--color-accent-subtle);
}

.btn-tertiary:active:not(:disabled) {
    background-color: rgba(48, 209, 88, 0.18);
}

.btn-tertiary:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

.btn-full {
    width: 100%;
}

/* ========================================
   Hero Section - Apple 2026
   ======================================== */

.hero {
    padding-top: calc(var(--space-40) + 52px);
    padding-bottom: var(--space-24);
    background-color: var(--color-bg);
    position: relative;
}

.hero-content {
    max-width: 840px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    margin-bottom: var(--space-10);
    display: flex;
    justify-content: center;
    align-items: center;
}

.badge-image {
    max-width: 100%;
    height: auto;
    width: clamp(80px, 14vw, 140px);
    transition: all var(--duration-base) var(--ease-smooth);
    display: block;
}

.badge-image:hover {
    transform: scale(1.02);
}

.hero-title {
    font-size: clamp(32px, 5vw, 52px);
    line-height: 1.15;
    margin-bottom: var(--space-8);
    color: var(--color-text-primary);
    font-weight: 700;
    letter-spacing: -0.024em;
}

.hero-subtitle {
    font-size: clamp(19px, 2.1vw, 21px);
    line-height: 1.48;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-14);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
    letter-spacing: 0.005em;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

@media (min-width: 768px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
        gap: var(--space-5);
    }
}

.hero-visual {
    max-width: 900px;
    margin: 0 auto;
}

.hero-image {
    aspect-ratio: 16/9;
    max-width: 100%;
}

/* ========================================
   Trusted By Section
   ======================================== */

.trusted-by {
    padding: var(--space-16) 0;
    background: var(--color-bg);
    border-bottom: 0.5px solid var(--color-border-subtle);
}

.trusted-by-text {
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-8);
}

.trusted-logos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
    max-width: 900px;
    margin: 0 auto;
    align-items: center;
}

@media (min-width: 768px) {
    .trusted-logos {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-10);
    }
}

.trusted-logo-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

.trusted-logo {
    max-width: 100%;
    height: auto;
    max-height: 50px;
    object-fit: contain;
    opacity: 0.7;
    transition: opacity var(--duration-fast) var(--ease-out);
    filter: brightness(1.1);
}

.trusted-logo-item:hover .trusted-logo {
    opacity: 1;
}

/* ========================================
   Section Base Styles
   ======================================== */

section {
    scroll-margin-top: 100px;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-24);
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(28px, 4vw, 48px);
    margin-bottom: var(--space-8);
    color: var(--color-text-primary);
    font-weight: 700;
    letter-spacing: -0.022em;
    line-height: 1.2;
}

.section-subtitle {
    font-size: clamp(17px, 1.9vw, 21px);
    color: var(--color-text-secondary);
    line-height: 1.48;
    font-weight: 400;
    letter-spacing: 0.004em;
}

.platforms-intro {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin: 0 0 var(--space-8);
    text-align: center;
}

.platform-logos-wrapper {
    width: 100%;
    overflow: hidden;
    margin: 0 auto var(--space-12);
    padding: var(--space-6) 0;
    background: rgba(28, 28, 30, 0.3);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-radius: var(--radius-xl);
    border: 0.5px solid rgba(255, 255, 255, 0.04);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
}

.platform-logos-track {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    animation: scroll-left 40s linear infinite;
    width: fit-content;
}

@keyframes scroll-left {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.platform-logos-track:hover {
    animation-play-state: paused;
}

.platform-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
    opacity: 1;
    filter: grayscale(0%) brightness(1);
    transition: all var(--duration-base) var(--ease-smooth);
    flex-shrink: 0;
}

.platform-logo:hover {
    transform: scale(1.12);
    filter: brightness(1.2);
}

/* ========================================
   Problem Section
   ======================================== */

.problem {
    padding: var(--space-32) 0;
    background-color: var(--color-surface);
}

.problem-content {
    max-width: 980px;
    margin: 0 auto;
    text-align: center;
}

.section-intro {
    font-size: 19px;
    line-height: 1.52941;
    color: var(--color-text-secondary);
    max-width: 680px;
    margin: 0 auto var(--space-24);
    font-weight: 400;
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    max-width: 100%;
    margin: 0 auto var(--space-24);
}

@media (min-width: 768px) {
    .problem-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-6);
    }
}

.problem-item {
    padding: var(--space-12);
    background: rgba(28, 28, 30, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    border: 0.5px solid rgba(255, 255, 255, 0.06);
    text-align: left;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    transition: all var(--duration-base) var(--ease-out);
}

.problem-item:hover {
    background: rgba(28, 28, 30, 0.5);
    border-color: rgba(255, 255, 255, 0.10);
}

.problem-item-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-8);
    letter-spacing: -0.022em;
    line-height: 1.27273;
}

.problem-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.problem-list li {
    font-size: 17px;
    line-height: 1.52941;
    color: var(--color-text-secondary);
    padding-left: var(--space-6);
    position: relative;
}

.problem-list li::before {
    content: "•";
    color: var(--color-accent);
    position: absolute;
    left: 0;
}

.problem-solution {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.problem-solution p {
    font-size: 19px;
    line-height: 1.47619;
    color: var(--color-text-primary);
    margin: 0;
    font-weight: 400;
}

.problem-solution strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

/* ========================================
   Solution Section
   ======================================== */

.hackathons {
    padding: var(--space-24) 0 var(--space-32) 0;
    background-color: var(--color-bg);
    border-bottom: 0.5px solid var(--color-border-subtle);
}

.solution {
    padding: var(--space-32) 0;
    background-color: var(--color-bg);
}

.solution-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    max-width: 1080px;
    margin: 0 auto;
}

.solution-card {
    padding: var(--space-6);
    background: rgba(28, 28, 30, 0.5);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-radius: var(--radius-3xl);
    border: 0.5px solid rgba(255, 255, 255, 0.06);
    transition: all var(--duration-base) var(--ease-smooth);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15), 0 2px 8px rgba(0, 0, 0, 0.08);
}

.solution-card:hover {
    transform: translateY(-4px) scale(1.008);
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.24), 0 8px 24px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(48, 209, 88, 0.15);
    border-color: rgba(48, 209, 88, 0.2);
    background: rgba(28, 28, 30, 0.65);
}

.card-icon {
    margin-bottom: var(--space-10);
}

.placeholder-icon {
    width: 72px;
    height: 72px;
    background: var(--color-accent-subtle);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    transition: all var(--duration-base) var(--ease-smooth);
}

.solution-card:hover .placeholder-icon {
    transform: scale(1.05);
    background: rgba(48, 209, 88, 0.18);
}

.placeholder-icon svg {
    opacity: 0.9;
}

.solution-title {
    font-size: clamp(21px, 2.3vw, 28px);
    margin-bottom: var(--space-6);
    color: var(--color-text-primary);
    font-weight: 600;
    letter-spacing: -0.018em;
    line-height: 1.25;
}

.solution-description {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.53;
    letter-spacing: -0.011em;
    margin: 0;
}

.solution-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.solution-list li {
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    padding-left: var(--space-6);
    position: relative;
}

.solution-list li::before {
    content: "✓";
    color: var(--color-accent);
    font-weight: 700;
    position: absolute;
    left: 0;
}

.solution-list li strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

@media (min-width: 1024px) {
    .solution-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-14);
    }
}

/* ========================================
   Social Proof Section
   ======================================== */

.social-proof {
    padding: var(--space-32) 0;
    background: transparent;
    border-top: 0.5px solid var(--color-border-subtle);
    border-bottom: none;
}

.social-proof-content {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
    padding: 0;
    background: transparent;
    border-radius: 0;
    border: none;
    box-shadow: none;
}

.social-proof-title {
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 700;
    letter-spacing: -0.022em;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--space-6);
}

.social-proof-text {
    font-size: clamp(17px, 1.8vw, 19px);
    line-height: 1.53;
    color: var(--color-text-secondary);
    letter-spacing: -0.004em;
    margin: 0;
    margin-bottom: var(--space-16);
}

.credentials-logos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
    margin-top: var(--space-14);
    padding-top: 0;
    border-top: none;
}

@media (min-width: 768px) {
    .credentials-logos {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-10);
    }
}

.logo-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: transparent;
    border-radius: 0;
    border: none;
    transition: all var(--duration-base) var(--ease-smooth);
    min-height: 80px;
}

.logo-item:hover {
    transform: translateY(-2px);
    opacity: 0.88;
}

.credential-logo {
    max-width: 100%;
    height: auto;
    width: 100%;
    max-height: 70px;
    object-fit: contain;
    opacity: 0.92;
    transition: all var(--duration-fast) var(--ease-out);
    filter: brightness(1.08);
}

.logo-item:hover .credential-logo {
    opacity: 1;
    filter: brightness(1.15);
}

/* ========================================
   How It Works Section - Horizontal Scroll Carousel
   ======================================== */

.how-works {
    padding: var(--space-32) 0;
    background-color: var(--color-surface);
    overflow: hidden;
}

.scroll-hint {
    display: none;
}

.timeline {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    max-width: 1120px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .timeline {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-6);
    }
}

.timeline-item {
    background: rgba(28, 28, 30, 0.55);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-radius: var(--radius-3xl);
    border: 0.5px solid rgba(255, 255, 255, 0.06);
    padding: var(--space-12);
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    transition: all var(--duration-base) var(--ease-smooth);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15), 0 2px 8px rgba(0, 0, 0, 0.08);
}

.timeline-item:hover {
    transform: translateY(-3px) scale(1.005);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.18), 0 4px 16px rgba(0, 0, 0, 0.12);
    border-color: rgba(255, 255, 255, 0.10);
    background: rgba(28, 28, 30, 0.65);
}

.timeline-number {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.02em;
    box-shadow: 0 4px 12px rgba(48, 209, 88, 0.3);
    flex-shrink: 0;
}

.timeline-content {
    flex: 1;
}

.timeline-title {
    font-size: clamp(20px, 2.2vw, 24px);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-5);
    letter-spacing: -0.020em;
    line-height: 1.3;
}

.timeline-intro {
    font-size: 16px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-5);
    line-height: 1.5;
}

.timeline-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.timeline-list li {
    font-size: 15px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    padding-left: var(--space-6);
    position: relative;
}

.timeline-list li::before {
    content: "✓";
    color: var(--color-accent);
    font-weight: 700;
    position: absolute;
    left: 0;
}

/* ========================================
   Use Cases Section
   ======================================== */

.use-cases {
    padding: var(--space-32) 0;
    background-color: var(--color-bg);
}

.cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    max-width: 1120px;
    margin: 0 auto;
}

.case-card {
    padding: var(--space-6);
    background: rgba(28, 28, 30, 0.5);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--radius-2xl);
    border: 0.5px solid rgba(255, 255, 255, 0.06);
    transition: all var(--duration-base) var(--ease-smooth);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
}

.case-card:hover {
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-3px) scale(1.005);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.18), 0 4px 16px rgba(0, 0, 0, 0.12);
    background: rgba(28, 28, 30, 0.65);
}

.case-image {
    margin-bottom: var(--space-7);
}

.case-title {
    font-size: clamp(19px, 2.1vw, 22px);
    margin-bottom: var(--space-5);
    color: var(--color-text-primary);
    font-weight: 600;
    letter-spacing: -0.016em;
    line-height: 1.25;
}

.case-description {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.53;
    letter-spacing: -0.011em;
    margin: 0;
}

.case-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.case-list li {
    font-size: 15px;
    line-height: 1.5;
    color: var(--color-text-secondary);
    padding-left: var(--space-5);
    position: relative;
}

.case-list li::before {
    content: "→";
    color: var(--color-accent);
    font-weight: 700;
    position: absolute;
    left: 0;
}

@media (min-width: 768px) {
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
}

@media (min-width: 1200px) {
    .cases-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-6);
    }
}

/* ========================================
   Testimonials Section
   ======================================== */

.testimonials {
    padding: var(--space-32) 0;
    background-color: var(--color-surface);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    max-width: 1080px;
    margin: 0 auto;
}

.testimonial-card {
    padding: var(--space-6);
    background: rgba(28, 28, 30, 0.5);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--radius-3xl);
    border: 0.5px solid rgba(255, 255, 255, 0.06);
    transition: all var(--duration-base) var(--ease-smooth);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
}

.testimonial-card:hover {
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-3px) scale(1.005);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.18), 0 4px 16px rgba(0, 0, 0, 0.12);
    background: rgba(28, 28, 30, 0.65);
}

.testimonial-content {
    margin-bottom: var(--space-10);
}

.testimonial-text {
    font-size: 19px;
    line-height: 1.5;
    color: var(--color-text-primary);
    margin-bottom: 0;
    font-weight: 500;
    letter-spacing: -0.016em;
}

.testimonial-author {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-5);
    padding-top: var(--space-8);
    border-top: 0.5px solid var(--color-border-subtle);
}

.author-avatar {
    flex-shrink: 0;
}

.placeholder-avatar {
    width: 44px;
    height: 44px;
    background: var(--color-surface);
    border: 0.5px solid var(--color-border-subtle);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
}

.author-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.author-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.016em;
}

.author-title {
    font-size: 15px;
    color: var(--color-text-tertiary);
    letter-spacing: -0.016em;
}

@media (min-width: 1024px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-6);
    }
}

/* ========================================
   Pricing Section
   ======================================== */

.pricing {
    padding: var(--space-32) 0;
    background: var(--color-bg);
}

.pricing-content {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.pricing-title {
    font-size: clamp(28px, 4vw, 48px);
    margin-bottom: var(--space-6);
    color: var(--color-text-primary);
    font-weight: 700;
    letter-spacing: -0.022em;
    line-height: 1.2;
}

.pricing-description {
    font-size: clamp(19px, 2.1vw, 21px);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-20);
    line-height: 1.48;
    font-weight: 400;
    letter-spacing: 0.005em;
}

.pricing-includes {
    text-align: left;
    padding: var(--space-6);
    background: rgba(28, 28, 30, 0.5);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--radius-3xl);
    margin-bottom: var(--space-14);
    border: 0.5px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all var(--duration-base) var(--ease-smooth);
}

.pricing-includes:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.18), 0 4px 16px rgba(0, 0, 0, 0.12);
    border-color: rgba(255, 255, 255, 0.10);
}

.pricing-includes h3 {
    font-size: 21px;
    margin-bottom: var(--space-8);
    color: var(--color-text-primary);
    font-weight: 600;
    letter-spacing: -0.016em;
}

.pricing-includes ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.pricing-includes li {
    padding-left: var(--space-10);
    position: relative;
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.52;
    letter-spacing: -0.022em;
}

.pricing-includes li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 1px;
    color: var(--color-accent);
    font-weight: 700;
    font-size: 18px;
}

/* ========================================
   FAQ Section
   ======================================== */

.faq {
    padding: var(--space-40) 0;
    background-color: var(--color-surface);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 0.5px solid var(--color-border-subtle);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    padding: var(--space-10) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 19px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.016em;
    transition: opacity var(--duration-fast) var(--ease-out);
}

.faq-question:hover {
    opacity: 0.7;
}

.faq-icon {
    font-size: 22px;
    color: var(--color-text-tertiary);
    transition: transform var(--duration-base) var(--ease-smooth),
                color var(--duration-fast) var(--ease-out);
    flex-shrink: 0;
    margin-left: var(--space-6);
    font-weight: 300;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--color-accent);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--duration-slower) var(--ease-smooth);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: var(--space-10);
}

.faq-answer p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.52;
    letter-spacing: -0.022em;
}

/* ========================================
   Contact Section
   ======================================== */

.contact {
    padding: var(--space-40) 0;
    background: var(--color-bg);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-16);
}

.contact-title {
    font-size: clamp(36px, 4.8vw, 56px);
    margin-bottom: var(--space-6);
    color: var(--color-text-primary);
    font-weight: 700;
    letter-spacing: -0.024em);
}

.contact-description {
    font-size: 21px;
    color: var(--color-text-secondary);
    line-height: 1.48;
    margin-bottom: 0;
    font-weight: 500;
    letter-spacing: 0.007em;
}

.contact-form-wrapper {
    background: rgba(28, 28, 30, 0.5);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: var(--space-8);
    border-radius: var(--radius-3xl);
    border: 0.5px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.form-group label {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.016em;
}

.form-group input,
.form-group textarea {
    padding: var(--space-5);
    font-size: 17px;
    font-family: var(--font-primary);
    border: 0.5px solid var(--color-border-medium);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    transition: all var(--duration-fast) var(--ease-out);
    min-height: 56px;
    letter-spacing: -0.022em;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-tertiary);
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: var(--color-border-strong);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px var(--color-accent-subtle);
    background-color: var(--color-bg);
}

.form-group textarea {
    resize: vertical;
    min-height: 128px;
    line-height: 1.52;
}

@media (min-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr 1.5fr;
        align-items: start;
        gap: var(--space-20);
    }
}

/* ========================================
   Footer
   ======================================== */

.footer {
    padding: var(--space-24) 0 var(--space-10) 0;
    background-color: var(--color-surface);
    border-top: 0.5px solid var(--color-border-subtle);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-16);
    margin-bottom: var(--space-16);
}

.footer-logo {
    font-size: 21px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
    letter-spacing: -0.022em;
}

.footer-tagline {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.47;
    letter-spacing: -0.016em;
}

.footer-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-5);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.footer-links li a {
    font-size: 15px;
    color: var(--color-text-secondary);
    transition: opacity var(--duration-fast) var(--ease-out);
    letter-spacing: -0.016em;
}

.footer-links li a:hover {
    opacity: 0.7;
}

.footer-bottom {
    padding-top: var(--space-10);
    border-top: 0.5px solid var(--color-border-subtle);
    text-align: center;
}

.footer-copyright {
    font-size: 13px;
    color: var(--color-text-tertiary);
    letter-spacing: -0.008em;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: var(--space-12);
    }
}

/* ========================================
   Placeholder Images & Icons
   ======================================== */

.placeholder-image {
    width: 100%;
    background: linear-gradient(135deg, var(--color-surface-elevated) 0%, rgba(28, 28, 30, 0.5) 100%);
    border: 0.5px solid var(--color-border-subtle);
    border-radius: var(--radius-3xl);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: all var(--duration-base) var(--ease-smooth);
}

.placeholder-image.small {
    aspect-ratio: 4/3;
    border-radius: var(--radius-2xl);
}

.placeholder-image:hover {
    border-color: var(--color-border-medium);
    background: linear-gradient(135deg, rgba(28, 28, 30, 0.7) 0%, rgba(28, 28, 30, 0.3) 100%);
}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    color: var(--color-text-tertiary);
    padding: var(--space-8);
}

.placeholder-content svg {
    opacity: 0.3;
    transition: all var(--duration-base) var(--ease-smooth);
}

.placeholder-image:hover .placeholder-content svg {
    opacity: 0.5;
    transform: scale(1.03);
}

.placeholder-content span {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.4;
}

/* ========================================
   Micro-interactions & Polish
   ======================================== */

@media (prefers-reduced-motion: no-preference) {
    .solution-card,
    .how-card,
    .case-card,
    .testimonial-card {
        transition: all var(--duration-base) var(--ease-smooth);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus states for accessibility */
.btn:focus-visible,
.nav-menu li a:focus-visible,
input:focus-visible,
textarea:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

/* Smooth scrolling sections */
section {
    scroll-margin-top: 100px;
}

/* Selection styling */
::selection {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

::-moz-selection {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

/* ========================================
   Utilities
   ======================================== */

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

.mb-0 {
    margin-bottom: 0;
}

/* Visually hidden but accessible to screen readers */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}