/* ============================================
   Investment Trust Video Production - Professional LP
   ============================================ */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors - Deep Professional Blue */
    --primary-900: #0a1628;
    --primary-800: #0f2744;
    --primary-700: #153a5f;
    --primary-600: #1a4d7a;
    --primary-500: #2563a8;
    --primary-400: #3b7ec4;
    --primary-300: #5a9ad8;
    --primary-200: #88b9e8;
    --primary-100: #c5dff5;

    /* Accent Colors - Sophisticated Gold */
    --accent-600: #c9941d;
    --accent-500: #d4a838;
    --accent-400: #dbb752;
    --accent-300: #e5ca7d;
    --accent-200: #eedda9;
    --accent-100: #f7f0d4;

    /* Neutral Colors */
    --neutral-900: #1a1d23;
    --neutral-800: #2d3139;
    --neutral-700: #4a4f5c;
    --neutral-600: #6b7280;
    --neutral-500: #9ca3af;
    --neutral-400: #cbd5e1;
    --neutral-300: #e2e8f0;
    --neutral-200: #f1f5f9;
    --neutral-100: #f8fafc;
    --white: #ffffff;

    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Typography */
    --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Inter', 'Noto Sans JP', sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-4xl: 8rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--neutral-700);
    background-color: var(--white);
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--neutral-200);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: var(--primary-900);
    font-size: 1.125rem;
    letter-spacing: -0.025em;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--accent-500);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--neutral-700);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-base);
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-600);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-500);
    transition: width var(--transition-base);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--primary-600);
    color: var(--white) !important;
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.nav-cta:hover {
    background: var(--primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.nav-cta::after {
    display: none;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--neutral-700);
    transition: all var(--transition-base);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-700) 50%, var(--primary-600) 100%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(212, 168, 56, 0.08) 0%, transparent 50%);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.03;
    background-image: 
        linear-gradient(30deg, var(--neutral-100) 12%, transparent 12.5%, transparent 87%, var(--neutral-100) 87.5%, var(--neutral-100)),
        linear-gradient(150deg, var(--neutral-100) 12%, transparent 12.5%, transparent 87%, var(--neutral-100) 87.5%, var(--neutral-100)),
        linear-gradient(30deg, var(--neutral-100) 12%, transparent 12.5%, transparent 87%, var(--neutral-100) 87.5%, var(--neutral-100)),
        linear-gradient(150deg, var(--neutral-100) 12%, transparent 12.5%, transparent 87%, var(--neutral-100) 87.5%, var(--neutral-100));
    background-size: 80px 140px;
    background-position: 0 0, 0 0, 40px 70px, 40px 70px;
}

.hero-video-placeholder {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    width: 400px;
    height: 225px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    border: 2px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    z-index: 1;
}

.video-sample {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: rgba(255, 255, 255, 0.9);
}

.video-sample i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.video-sample span {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 650px;
    padding: 3rem 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-xl);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 2rem;
    letter-spacing: 0.05em;
}

.badge-icon {
    color: var(--accent-400);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.title-highlight {
    color: var(--accent-400);
    position: relative;
    display: inline-block;
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    font-weight: 400;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.scroll-line {
    width: 1px;
    height: 3rem;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.5), transparent);
    animation: scrollIndicator 2s ease-in-out infinite;
}

@keyframes scrollIndicator {
    0%, 100% {
        opacity: 0;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(1rem);
    }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-500);
    color: var(--neutral-900);
}

.btn-primary:hover {
    background: var(--accent-600);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(212, 168, 56, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--primary-900);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

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

.section {
    padding: 6rem 0;
    position: relative;
}

.section-header {
    margin-bottom: 4rem;
}

.section-header.center {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary-600);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    padding: 0.5rem 1rem;
    background: var(--primary-100);
    border-radius: var(--radius-md);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    line-height: 1.3;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.125rem;
    color: var(--neutral-600);
    line-height: 1.8;
}

/* ============================================
   Problems Section
   ============================================ */

.section-problems {
    background: var(--neutral-100);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.problem-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    text-align: center;
    border: 2px solid transparent;
}

/* Hover disabled */

.problem-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, #fee2e2, #fecaca);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--error);
    font-size: 1.75rem;
    margin: 0 auto 1.5rem;
}

.problem-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.problem-description {
    color: var(--neutral-600);
    line-height: 1.7;
    font-size: 0.9375rem;
}

.solution-message {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    padding: 3rem;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.solution-icon-wrapper {
    width: 5rem;
    height: 5rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-400);
    font-size: 2.5rem;
    flex-shrink: 0;
}

.solution-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.75rem;
}

.highlight-text {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent-400);
    line-height: 1.4;
}

/* ============================================
   Benefits Section
   ============================================ */

.section-benefit {
    background: var(--white);
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-bottom: 4rem;
}

.benefit-card {
    background: var(--neutral-100);
    padding: 3rem;
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
    transform: scaleX(0);
    transition: transform var(--transition-base);
    transform-origin: left;
}

.benefit-card:hover::before {
    transform: scaleX(1);
}

/* Hover disabled */

.benefit-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-200);
    font-family: var(--font-display);
    line-height: 1;
    margin-bottom: 1rem;
}

.benefit-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.benefit-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 1.25rem;
    line-height: 1.4;
}

.benefit-description {
    color: var(--neutral-600);
    line-height: 1.8;
    font-size: 1rem;
}

/* Benefit Flow */
.benefit-flow {
    background: var(--primary-900);
    padding: 4rem;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
}

.flow-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--white);
    text-align: center;
    margin-bottom: 3rem;
}

.flow-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    max-width: 400px;
    margin: 0 auto;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    width: 100%;
    border: 2px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.flow-step.highlight {
    background: rgba(212, 168, 56, 0.15);
    border-color: var(--accent-500);
}

.flow-step.accent {
    background: linear-gradient(135deg, var(--accent-600), var(--accent-500));
    border-color: var(--accent-500);
}

.flow-icon {
    width: 4rem;
    height: 4rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.75rem;
}

.flow-label {
    color: var(--white);
    font-weight: 600;
    font-size: 1.125rem;
    text-align: center;
}

.sub-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 0.25rem;
}

.flow-arrow {
    color: rgba(255, 255, 255, 0.5);
    font-size: 2rem;
}

/* ============================================
   Case Studies Section
   ============================================ */

.section-cases {
    background: var(--neutral-100);
}

.case-featured {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    background: var(--white);
    padding: 3rem;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    margin-bottom: 3rem;
}

.case-video {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.case-video-placeholder {
    position: relative;
    padding-top: 56.25%;
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-video-placeholder i {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.3);
}

.case-video-placeholder span {
    position: absolute;
    top: 60%;
    left: 50%;
    transform: translate(-50%, 0);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    font-weight: 500;
}

.case-label-main {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-600);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.375rem 0.875rem;
    background: var(--accent-100);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.case-title-main {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--neutral-900);
    line-height: 1.4;
    margin-bottom: 2rem;
}

.case-purpose,
.case-points {
    margin-bottom: 2rem;
}

.case-purpose h4,
.case-points h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 0.75rem;
}

.case-purpose p {
    color: var(--neutral-600);
    line-height: 1.7;
}

.points-list {
    list-style: none;
}

.points-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--neutral-700);
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.points-list i {
    color: var(--accent-500);
    font-size: 1.125rem;
    margin-top: 0.125rem;
    flex-shrink: 0;
}

.case-results-main {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 2px solid var(--neutral-200);
}

.result-item-main {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.result-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-600);
    line-height: 1;
}

.result-value span {
    font-size: 1.25rem;
    color: var(--neutral-600);
}

.result-label {
    font-size: 0.8125rem;
    color: var(--neutral-600);
    margin-top: 0.25rem;
}

/* Sub Cases */
.cases-sub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.case-sub-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

/* Hover disabled */

.case-sub-video {
    position: relative;
    padding-top: 56.25%;
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-sub-video i {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.3);
}

.case-sub-content {
    padding: 2rem;
}

.case-sub-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.case-sub-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.case-sub-description {
    color: var(--neutral-600);
    line-height: 1.7;
    font-size: 0.9375rem;
    margin-bottom: 1.25rem;
}

.case-sub-spec {
    font-size: 0.8125rem;
    color: var(--neutral-500);
    padding-top: 1rem;
    border-top: 1px solid var(--neutral-200);
}

/* ============================================
   Strength Section
   ============================================ */

.section-strength {
    background: var(--white);
}

.strength-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2.5rem;
}

.strength-card {
    background: var(--neutral-100);
    padding: 3rem;
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
    position: relative;
    border: 2px solid transparent;
}

/* Hover disabled */

.strength-number {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 4rem;
    font-weight: 700;
    color: var(--neutral-200);
    font-family: var(--font-display);
    line-height: 1;
}

.strength-icon {
    width: 5rem;
    height: 5rem;
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 20px rgba(212, 168, 56, 0.25);
}

.strength-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 1.25rem;
}

.strength-description {
    color: var(--neutral-600);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.strength-features {
    list-style: none;
}

.strength-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--neutral-700);
    font-size: 0.9375rem;
    margin-bottom: 0.625rem;
}

.strength-features i {
    color: var(--accent-500);
    font-size: 0.875rem;
}

/* ============================================
   Production Flow Section
   ============================================ */

.section-flow {
    background: var(--neutral-100);
}

.flow-steps {
    max-width: 800px;
    margin: 0 auto;
}

.flow-step-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
}

/* Hover disabled */

.step-number {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary-600);
    background: var(--primary-100);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.25rem;
}

.step-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 1rem;
}

.step-description {
    color: var(--neutral-600);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.step-duration {
    font-size: 0.875rem;
    color: var(--neutral-500);
    font-weight: 500;
}

.flow-arrow-down {
    display: flex;
    justify-content: center;
    padding: 1rem 0;
    color: var(--neutral-400);
    font-size: 2rem;
}

.flow-total {
    background: linear-gradient(135deg, var(--primary-900), var(--primary-800));
    padding: 3rem;
    border-radius: var(--radius-2xl);
    text-align: center;
    margin-top: 3rem;
    box-shadow: var(--shadow-xl);
}

.total-duration {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.total-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.total-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-400);
}

/* ============================================
   Usage Section
   ============================================ */

.section-usage {
    background: var(--white);
}

.usage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2.5rem;
}

.usage-card {
    background: var(--neutral-100);
    padding: 3rem;
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
    text-align: center;
    border: 2px solid transparent;
}

.usage-card:hover {
    background: var(--white);
    border-color: var(--primary-400);
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.usage-icon {
    width: 5rem;
    height: 5rem;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2.25rem;
    margin: 0 auto 1.5rem;
    box-shadow: 0 8px 20px rgba(37, 99, 168, 0.25);
}

.usage-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 1.25rem;
}

.usage-description {
    color: var(--neutral-600);
    line-height: 1.8;
    font-size: 1rem;
}

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

.section-faq {
    background: var(--neutral-100);
}

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

.faq-item {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-lg);
}

.faq-question {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.faq-q {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--white);
    font-weight: 700;
    font-size: 1.125rem;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.faq-question h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--neutral-900);
    line-height: 1.5;
}

.faq-answer {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding-left: 0.5rem;
}

.faq-a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--accent-500);
    color: var(--neutral-900);
    font-weight: 700;
    font-size: 1.125rem;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.faq-answer p {
    color: var(--neutral-600);
    line-height: 1.8;
    flex: 1;
}

/* ============================================
   CTA Final Section
   ============================================ */

.section-cta-final {
    background: linear-gradient(135deg, var(--primary-900), var(--primary-800));
    padding: 6rem 0;
}

.cta-final-content {
    text-align: center;
    margin-bottom: 4rem;
}

.cta-final-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1.3;
    margin-bottom: 1.5rem;
}

.cta-final-title .highlight {
    color: var(--accent-400);
}

.cta-final-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.cta-final-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

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

.contact-form-section {
    max-width: 900px;
    margin: 0 auto;
}

.contact-form-wrapper {
    background: var(--white);
    padding: 3rem;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
}

.form-header-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--neutral-900);
    text-align: center;
    margin-bottom: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.required {
    color: var(--error);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1.125rem;
    border: 2px solid var(--neutral-300);
    border-radius: var(--radius-lg);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--neutral-900);
    transition: all var(--transition-base);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(37, 99, 168, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

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

.footer {
    background: var(--neutral-900);
    color: rgba(255, 255, 255, 0.8);
    padding: 3rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: start;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9375rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--accent-400);
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* ============================================
   Animations
   ============================================ */

[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

[data-animate="fade-up"].animated {
    transform: translateY(0);
}

[data-animate="fade-right"] {
    transform: translateX(-30px);
}

[data-animate="fade-right"].animated {
    transform: translateX(0);
}

[data-animate="fade-left"] {
    transform: translateX(30px);
}

[data-animate="fade-left"].animated {
    transform: translateX(0);
}

/* ============================================
   Utility Classes
   ============================================ */

.pc-only {
    display: inline;
}

.sp-only {
    display: none;
}

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

@media (max-width: 1200px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.25rem;
    }
    
    .hero-video-placeholder {
        width: 350px;
        height: 197px;
    }
}

@media (max-width: 968px) {
    .hero-video-placeholder {
        display: none;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .case-featured {
        grid-template-columns: 1fr;
    }
    
    .case-results-main {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container,
    .container-wide {
        padding: 0 1.5rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding: 8rem 0 4rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .section-title {
        font-size: 1.875rem;
    }
    
    .cta-final-title {
        font-size: 2rem;
    }
    
    .section-description {
        font-size: 1rem;
    }
    
    .problems-grid {
        grid-template-columns: 1fr;
    }
    
    .benefit-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-message {
        flex-direction: column;
        text-align: center;
    }
    
    .highlight-text {
        font-size: 1.5rem;
    }
    
    .flow-diagram {
        max-width: 100%;
    }
    
    .cases-sub-grid {
        grid-template-columns: 1fr;
    }
    
    .strength-grid {
        grid-template-columns: 1fr;
    }
    
    .usage-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 2rem;
    }
    
    .cta-final-buttons {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .pc-only {
        display: none;
    }
    
    .sp-only {
        display: inline;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.875rem;
    }
    
    .section-title {
        font-size: 1.625rem;
    }
    
    .cta-final-title {
        font-size: 1.75rem;
    }
    
    .contact-form-wrapper {
        padding: 1.5rem;
    }
    
    .benefit-flow {
        padding: 2rem 1.5rem;
    }
}