:root {
    /* Brand Colors */
    --primary: #e76d25;
    --primary-rgb: 231, 109, 37;
    --secondary: #1a2c4e;
    --secondary-rgb: 26, 44, 78;
    --accent: #0ea5e9;
    --accent-rgb: 14, 165, 233;
    --success: #10b981;
    
    /* Light Theme Palette */
    --bg-base: #ffffff;
    --bg-soft: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #475569;
    --border: #e2e8f0;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05), 0 1px 2px rgba(15, 23, 42, 0.03);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -1px rgba(15, 23, 42, 0.03);
    --shadow-lg: 0 20px 40px -10px rgba(15, 23, 42, 0.08);
    --shadow-hover: 0 25px 50px -12px rgba(15, 23, 42, 0.15);
    
    /* Fonts */
    --font-primary: 'Outfit', 'Inter', 'Noto Sans JP', sans-serif;
    
    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    line-break: strict;
    overflow-wrap: anywhere;
    word-break: normal;
}

body {
    font-family: var(--font-primary);
    color: var(--text-muted);
    background-color: var(--bg-base);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

/* --- Typography --- */
h1, h2, h3, h4 {
    color: var(--secondary);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.section-tag {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
    border-radius: 100px;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: clamp(2.25rem, 4vw, 3rem);
    margin-bottom: 1.5rem;
    color: var(--secondary);
}

.section-logo {
    height: 48px;
    width: auto;
    margin-bottom: 1.5rem;
}

.about-logo {
    height: 86px;
    width: auto;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    display: block;
}

.section-logo-product {
    height: 56px;
    width: auto;
    margin-bottom: 1.5rem;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.section-head {
    margin-bottom: 5rem;
    text-align: center;
}

.section-head p {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 2rem;
    border-radius: 8px; /* Slightly rounded */
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: white;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(var(--primary-rgb), 0.3);
}

.btn-primary:hover {
    background: #d95d16;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(var(--primary-rgb), 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--secondary);
    border-color: var(--border);
}

.btn-outline:hover {
    background: var(--bg-soft);
    border-color: var(--secondary);
}

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

.btn-white:hover {
    background: var(--bg-soft);
    transform: translateY(-2px);
}

.btn-dark {
    background: var(--secondary);
    color: white;
}

.btn-dark:hover {
    background: #111e36;
    transform: translateY(-2px);
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
    transition: var(--transition-smooth);
}

.header-container {
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo img {
    height: 36px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

/* --- Hero Section --- */
.hero {
    padding: 180px 0 100px;
    background-color: var(--bg-soft);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 850px;
    margin: 0 auto 60px;
    position: relative;
    z-index: 10;
}

.hero-logo {
    height: 60px;
    margin-bottom: 2rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.hero-visual {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 20;
}

.browser-frame {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.browser-header {
    background: var(--bg-soft);
    padding: 12px 20px;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border);
}

.dot {
    width: 12px; height: 12px;
    border-radius: 50%;
}
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.browser-frame img {
    width: 100%;
    display: block;
}

/* --- Problem Section --- */
.problems {
    padding: 120px 0;
    background: white;
}

.problem-grid-wrapper {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    align-items: stretch;
}

.problem-card {
    background: var(--bg-card);
    padding: 3rem 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(var(--primary-rgb), 0.2);
}

.problem-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.problem-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

/* --- About Section --- */
.about {
    padding: 120px 0;
    background: var(--bg-soft);
}

.about .row {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: flex-start;
}

.feature-subtitle {
    font-size: 2.2rem;
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

.feature-desc {
    font-size: 1.15rem;
}

.minimal-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.minimal-item {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.minimal-num {
    font-size: 3rem;
    font-weight: 800;
    color: rgba(var(--primary-rgb), 0.2);
    margin-bottom: 1rem;
    display: block;
    line-height: 1;
}

/* --- Product Section --- */
.product {
    padding: 120px 0;
    background: white;
}

.product-subtitle {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.product-desc {
    font-size: 1.15rem;
    max-width: 800px;
    margin: 1.5rem auto 4rem;
}

.product-feature {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-top: 6rem;
}

.product-feature.reverse {
    grid-template-columns: 1fr 1.2fr;
}

.feature-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.solution-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.solution-card {
    background: var(--bg-soft);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
}

.solution-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

/* --- Use Case --- */
.usecase {
    padding: 120px 0;
    background: var(--bg-soft);
}

.usecase-subtitle {
    font-size: 1.6rem;
    color: var(--secondary);
    margin-bottom: 1rem;
    text-align: center;
}

.usecase-desc {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

/* --- Mid-Slogan --- */
.mid-slogan-container {
    padding: 120px 0;
    background: var(--secondary);
}

.mid-slogan-inner {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.mid-slogan-inner h2 {
    color: white;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1.5rem;
}

.mid-slogan-inner p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
}

.mid-slogan-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

/* --- Company --- */
.company {
    padding: 120px 0;
    background: white;
}

.company-box {
    background: var(--bg-soft);
    border-radius: 16px;
    padding: 3rem;
    border: 1px solid var(--border);
    max-width: 800px;
    margin: 0 auto;
}

.info-line {
    display: flex;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
}

.info-line:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.info-line:first-child {
    padding-top: 0;
}

.info-label {
    flex: 0 0 150px;
    font-weight: 700;
    color: var(--secondary);
}

/* --- Contact --- */
.contact-hero {
    background: var(--secondary);
    color: white;
    padding: 120px 0 40px;
    text-align: center;
}

.contact-hero h2 {
    font-size: 3rem;
    color: white;
    margin-bottom: 1.5rem;
}

.contact-hero p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 3rem;
}

/* --- Initial State for GSAP Animations --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .problem-grid-wrapper, .minimal-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }
    .about .row, .product-feature, .product-feature.reverse {
        grid-template-columns: 1fr;
    }
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .info-line {
        flex-direction: column;
        gap: 0.5rem;
    }
    .info-label {
        flex: none;
    }
}