:root {
    --bg-primary: #eef2ff;
    --bg-secondary: #f8fbff;
    --bg-card: rgba(255, 255, 255, 0.78);
    --bg-card-strong: rgba(255, 255, 255, 0.92);
    --border-subtle: rgba(59, 130, 246, 0.14);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --blue-400: #3b82f6;
    --blue-500: #2563eb;
    --blue-600: #1d4ed8;
    --purple-400: #8b5cf6;
    --green-400: #10b981;
    --shadow-soft: 0 20px 50px rgba(37, 99, 235, 0.08);
    --shadow-strong: 0 30px 70px rgba(37, 99, 235, 0.14);
}

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

html {
    scroll-behavior: smooth;
}

body {
    position: relative;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(180deg, #eef2ff 0%, #f7faff 44%, #eef5ff 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

.about-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.about-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.56;
}

.orb-1 {
    top: 4%;
    left: -8%;
    width: 420px;
    height: 420px;
    background: rgba(59, 130, 246, 0.22);
}

.orb-2 {
    top: 16%;
    right: -8%;
    width: 460px;
    height: 460px;
    background: rgba(139, 92, 246, 0.18);
}

.orb-3 {
    bottom: 8%;
    left: 12%;
    width: 520px;
    height: 520px;
    background: rgba(16, 185, 129, 0.1);
}

.orb-4 {
    bottom: 12%;
    right: 10%;
    width: 360px;
    height: 360px;
    background: rgba(59, 130, 246, 0.12);
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 50;
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(14px);
}

.navbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--blue-500), var(--purple-400));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 20px;
    height: 20px;
    color: #fff;
    fill: currentColor;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.logo-text span {
    color: var(--blue-400);
}

.nav-links {
    display: none;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 992px) {
    .nav-links {
        display: flex;
    }
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--blue-500);
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0.9rem 1.5rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    color: #fff;
    box-shadow: 0 16px 30px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 20px 36px rgba(37, 99, 235, 0.24);
}

.btn-primary.large {
    padding: 1rem 1.8rem;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(37, 99, 235, 0.14);
    color: var(--blue-500);
}

.btn-secondary:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.94);
}

.about-page {
    position: relative;
    z-index: 1;
}

.about-hero {
    padding: 128px 0 64px;
}

.about-hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 1.5rem;
    align-items: center;
}

.section-chip {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0.45rem 0.95rem;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.12);
    color: var(--blue-500);
    font-size: 0.84rem;
    font-weight: 700;
}

.about-title {
    margin-top: 1rem;
    font-size: clamp(2.3rem, 5vw, 4.2rem);
    line-height: 1.02;
    letter-spacing: -0.05em;
    font-weight: 800;
    max-width: 13ch;
}

.about-subtitle {
    margin-top: 1rem;
    max-width: 50rem;
    font-size: 1.08rem;
    line-height: 1.82;
    color: var(--text-secondary);
}

.about-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 2rem;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.highlight-card {
    padding: 1rem 1.05rem;
    border-radius: 1.25rem;
    background: rgba(255, 255, 255, 0.62);
    border: 1px solid rgba(37, 99, 235, 0.1);
    box-shadow: 0 14px 36px rgba(37, 99, 235, 0.05);
}

.highlight-card strong {
    display: block;
    font-size: 1rem;
    line-height: 1.2;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.highlight-card span {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.about-visual {
    display: flex;
    justify-content: flex-end;
}

.visual-shell {
    width: 100%;
    max-width: 560px;
    padding: 1.35rem;
    border-radius: 2rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.92), rgba(79, 70, 229, 0.88));
    box-shadow: var(--shadow-strong);
    position: relative;
    overflow: hidden;
}

.visual-shell::before {
    content: "";
    position: absolute;
    top: -40px;
    right: -40px;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.18), transparent 68%);
}

.visual-top {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.visual-badge {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
    font-size: 0.76rem;
    font-weight: 700;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.visual-line {
    height: 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.26);
    width: 120px;
}

.visual-line.short {
    width: 84px;
}

.visual-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.visual-card {
    padding: 1.2rem;
    border-radius: 1.5rem;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
    min-height: 160px;
}

.visual-card.large {
    grid-column: span 2;
    min-height: 210px;
}

.visual-card.wide {
    grid-column: span 2;
    min-height: 150px;
    background: rgba(239, 246, 255, 0.96);
}

.visual-card-chip {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--blue-500);
    font-size: 0.74rem;
    font-weight: 700;
}

.visual-card-chip.accent {
    background: rgba(139, 92, 246, 0.1);
    color: var(--purple-400);
}

.visual-card h3 {
    margin-top: 0.8rem;
    font-size: 1.2rem;
    line-height: 1.28;
    letter-spacing: -0.03em;
    font-weight: 700;
    color: var(--text-primary);
}

.visual-card p {
    margin-top: 0.65rem;
    font-size: 0.94rem;
    line-height: 1.72;
    color: var(--text-secondary);
}

.metric-value {
    display: block;
    font-size: 2rem;
    line-height: 1;
    letter-spacing: -0.05em;
    font-weight: 800;
    color: var(--blue-500);
}

.metric-label {
    display: block;
    margin-top: 0.55rem;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.about-story,
.about-values,
.about-difference,
.about-audience,
.about-cta {
    padding: 0 0 96px;
}

.story-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 1.5rem;
    align-items: start;
}

.story-main,
.side-note,
.value-card,
.stack-card,
.audience-card,
.cta-box {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(18px);
}

.story-main {
    padding: 1.7rem;
    border-radius: 1.75rem;
}

.section-title {
    margin-top: 0.95rem;
    font-size: clamp(1.9rem, 4vw, 3rem);
    line-height: 1.08;
    letter-spacing: -0.04em;
    font-weight: 800;
    color: var(--text-primary);
}

.section-text {
    margin-top: 0.95rem;
    font-size: 1rem;
    line-height: 1.82;
    color: var(--text-secondary);
    max-width: 56rem;
}

.side-note {
    padding: 1.25rem;
    border-radius: 1.5rem;
}

.side-note-chip {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(139, 92, 246, 0.1);
    color: var(--purple-400);
    font-size: 0.76rem;
    font-weight: 700;
}

.side-note p {
    margin-top: 0.8rem;
    font-size: 0.95rem;
    line-height: 1.72;
    color: var(--text-secondary);
}

.section-head.center {
    text-align: center;
    max-width: 860px;
    margin: 0 auto 2.5rem;
}

.section-head.narrow {
    max-width: 700px;
}

.section-subtext {
    margin-top: 1rem;
    font-size: 1rem;
    line-height: 1.78;
    color: var(--text-secondary);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.value-card {
    padding: 1.35rem;
    border-radius: 1.5rem;
    min-height: 100%;
}

.value-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--blue-500), var(--purple-400));
    color: #fff;
    font-size: 0.95rem;
    font-weight: 800;
    box-shadow: 0 14px 28px rgba(37, 99, 235, 0.18);
}

.value-card h3 {
    margin-top: 1rem;
    font-size: 1.1rem;
    line-height: 1.28;
    font-weight: 700;
    color: var(--text-primary);
}

.value-card p {
    margin-top: 0.6rem;
    font-size: 0.94rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.difference-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 420px;
    gap: 1.5rem;
    align-items: start;
}

.difference-list {
    display: grid;
    gap: 1rem;
    margin-top: 1.5rem;
}

.difference-item {
    display: grid;
    grid-template-columns: 16px minmax(0, 1fr);
    gap: 0.9rem;
    align-items: start;
    padding: 1rem 1rem 1rem 1.05rem;
    border-radius: 1.2rem;
    background: rgba(255, 255, 255, 0.58);
    border: 1px solid rgba(37, 99, 235, 0.08);
}

.difference-dot {
    width: 10px;
    height: 10px;
    margin-top: 0.45rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue-500), var(--purple-400));
    box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.12);
}

.difference-item h3 {
    font-size: 1rem;
    line-height: 1.3;
    font-weight: 700;
    color: var(--text-primary);
}

.difference-item p {
    margin-top: 0.35rem;
    font-size: 0.93rem;
    line-height: 1.68;
    color: var(--text-secondary);
}

.panel-stack {
    display: grid;
    gap: 1rem;
}

.stack-card {
    padding: 1.3rem;
    border-radius: 1.5rem;
}

.stack-chip {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(139, 92, 246, 0.1);
    color: var(--purple-400);
    font-size: 0.75rem;
    font-weight: 700;
}

.stack-chip.blue {
    background: rgba(37, 99, 235, 0.08);
    color: var(--blue-500);
}

.stack-chip.green {
    background: rgba(16, 185, 129, 0.1);
    color: #0f766e;
}

.stack-card h3 {
    margin-top: 0.8rem;
    font-size: 1.08rem;
    line-height: 1.28;
    font-weight: 700;
    color: var(--text-primary);
}

.stack-card p {
    margin-top: 0.45rem;
    font-size: 0.93rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.audience-card {
    padding: 1.4rem;
    border-radius: 1.5rem;
}

.audience-card h3 {
    font-size: 1.12rem;
    line-height: 1.28;
    font-weight: 700;
    color: var(--text-primary);
}

.audience-card p {
    margin-top: 0.65rem;
    font-size: 0.94rem;
    line-height: 1.72;
    color: var(--text-secondary);
}

.cta-box {
    border-radius: 2rem;
    padding: 2rem;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1.5rem;
    align-items: center;
}

.cta-copy h2 {
    margin-top: 0.9rem;
    font-size: clamp(1.9rem, 4vw, 3rem);
    line-height: 1.08;
    letter-spacing: -0.04em;
    font-weight: 800;
    max-width: 100%;
}

.cta-copy p {
    margin-top: 0.9rem;
    max-width: 44rem;
    font-size: 1rem;
    line-height: 1.75;
    color: var(--text-secondary);
}

.cta-actions {
    display: flex;
    gap: 0.85rem;
    flex-wrap: wrap;
    justify-content: flex-end;
    min-width: 280px;
}

@media (max-width: 1200px) {
    .about-hero-layout,
    .story-layout,
    .difference-wrap,
    .cta-box {
        grid-template-columns: 1fr;
    }

    .about-visual {
        justify-content: flex-start;
    }

    .values-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .audience-grid,
    .about-highlights {
        grid-template-columns: 1fr;
    }

    .cta-actions {
        justify-content: flex-start;
    }
}

@media (max-width: 767px) {
    .about-hero {
        padding-top: 112px;
    }

    .values-grid,
    .audience-grid,
    .visual-grid {
        grid-template-columns: 1fr;
    }

    .visual-card.large,
    .visual-card.wide {
        grid-column: span 1;
    }

    .story-main,
    .side-note,
    .value-card,
    .stack-card,
    .audience-card,
    .cta-box {
        padding: 1.2rem;
    }

    .about-title {
        max-width: none;
    }
}

@media (max-width: 991px) {
    .btn-primary:not(.large) {
        display: none;
    }
}