/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
    --color-bg: #0a0a0b;
    --color-surface: #111113;
    --color-surface-2: #1a1a1e;
    --color-border: #222228;
    --color-border-light: #2a2a32;
    --color-text: #ededef;
    --color-text-secondary: #8a8a96;
    --color-text-muted: #56565e;
    --color-accent: #7c9a72;
    --color-accent-light: #a3bf99;
    --color-accent-dim: rgba(124, 154, 114, 0.12);
    --color-gradient-1: #5a7a50;
    --color-gradient-2: #7c9a72;
    --color-gradient-3: #c9a84c;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ===========================
   Layout
   =========================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

.text-gradient {
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2), var(--color-gradient-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-accent-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
    padding: 6px 14px;
    background: var(--color-accent-dim);
    border: 1px solid rgba(124, 154, 114, 0.2);
    border-radius: 100px;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-desc {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    margin-top: 16px;
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    padding: 10px 22px;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gradient-1), var(--color-gradient-2));
    color: #fff;
    box-shadow: 0 4px 20px rgba(124, 154, 114, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 30px rgba(124, 154, 114, 0.5);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
}

.btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent-light);
    background: var(--color-accent-dim);
}

.btn-ghost {
    background: rgba(255,255,255,0.06);
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
}

.btn-ghost:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--color-text-muted);
}

.btn-nav {
    padding: 8px 20px;
    background: var(--color-accent-dim);
    color: var(--color-accent-light);
    border: 1px solid rgba(124, 154, 114, 0.25);
    border-radius: var(--radius-sm);
}

.btn-nav:hover {
    background: rgba(124, 154, 114, 0.2);
}

/* ===========================
   Navigation
   =========================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition);
    background: transparent;
}

.nav.scrolled {
    background: rgba(10, 10, 11, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-accent-light);
    background: var(--color-accent-dim);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(124, 154, 114, 0.2);
}

.logo-text {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a:not(.btn) {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    transition: color var(--transition);
    font-weight: 500;
}

.nav-links a:not(.btn):hover {
    color: var(--color-text);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ===========================
   Hero
   =========================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--color-gradient-1);
    top: -200px;
    right: -100px;
    opacity: 0.15;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--color-gradient-2);
    bottom: -150px;
    left: -100px;
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-accent-light);
    padding: 8px 16px;
    background: var(--color-accent-dim);
    border: 1px solid rgba(124, 154, 114, 0.2);
    border-radius: 100px;
    margin-bottom: 28px;
    letter-spacing: 0.05em;
}

.hero h1 {
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
}

.stat-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* ===========================
   Trust Bar
   =========================== */
.trust-bar {
    padding: 48px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.trust-label {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
}

.trust-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
}

.trust-item {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-muted);
    padding: 8px 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

/* ===========================
   Services
   =========================== */
.services {
    padding: 120px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.service-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card.featured {
    border-color: rgba(124, 154, 114, 0.3);
    background: linear-gradient(180deg, rgba(124, 154, 114, 0.06) 0%, var(--color-surface) 100%);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-dim);
    border: 1px solid rgba(124, 154, 114, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-accent-light);
    margin-bottom: 24px;
}

.service-card h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.service-card > p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 28px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.service-features li {
    padding-left: 16px;
    border-left: 2px solid var(--color-border-light);
    transition: border-color var(--transition);
}

.service-features li:hover {
    border-left-color: var(--color-accent);
}

.feature-title {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.feature-desc {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ===========================
   About
   =========================== */
.about {
    padding: 120px 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    font-size: 1.05rem;
    line-height: 1.7;
}

.about-values {
    display: grid;
    gap: 20px;
    margin-top: 36px;
}

.value {
    padding: 20px 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.value h4 {
    margin-bottom: 6px;
    color: var(--color-text);
}

.value p {
    font-size: 0.9rem !important;
    color: var(--color-text-muted) !important;
    margin-bottom: 0 !important;
}

/* Code Window */
.code-window {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 20px;
    background: var(--color-surface-2);
    border-bottom: 1px solid var(--color-border);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.code-title {
    margin-left: 12px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.code-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
    overflow-x: auto;
    color: var(--color-text-secondary);
}

.code-keyword { color: #a3bf99; }
.code-class { color: #d4b85c; }
.code-func { color: #8cbf82; }
.code-string { color: #c9a84c; }
.code-num { color: #d4b85c; }

/* ===========================
   Process
   =========================== */
.process {
    padding: 120px 0;
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 42px;
    left: 60px;
    right: 60px;
    height: 1px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gradient-2), var(--color-gradient-3), var(--color-accent));
    opacity: 0.3;
}

.process-step {
    text-align: center;
    position: relative;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--color-surface);
    border: 2px solid var(--color-border-light);
    border-radius: 50%;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-accent-light);
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
    transition: all var(--transition);
}

.process-step:hover .step-number {
    border-color: var(--color-accent);
    background: var(--color-accent-dim);
    box-shadow: 0 0 30px rgba(124, 154, 114, 0.2);
}

.step-content h3 {
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.step-content p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ===========================
   Use Cases
   =========================== */
.cases {
    padding: 120px 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    padding: 32px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.case-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.case-category {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-accent-light);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 4px 12px;
    background: var(--color-accent-dim);
    border-radius: 100px;
    margin-bottom: 16px;
}

.case-card h3 {
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.case-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ===========================
   CTA
   =========================== */
.cta {
    padding: 120px 0;
}

.cta-card {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 64px;
    padding: 64px;
    background: linear-gradient(135deg, rgba(124, 154, 114, 0.08) 0%, rgba(154, 178, 114, 0.06) 50%, rgba(201, 168, 76, 0.04) 100%);
    border: 1px solid rgba(124, 154, 114, 0.2);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gradient-1), var(--color-gradient-2), var(--color-gradient-3));
}

.cta-content h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    margin-bottom: 16px;
}

.cta-content p {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 32px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.cta-detail h4 {
    margin-bottom: 16px;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.cta-detail ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cta-detail li {
    position: relative;
    padding-left: 20px;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.cta-detail li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* ===========================
   Footer
   =========================== */
.footer {
    padding: 64px 0 32px;
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--color-border);
}

.footer-brand p {
    margin-top: 16px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    max-width: 300px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links h4 {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    transition: color var(--transition);
}

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

.footer-bottom {
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ===========================
   Animations
   =========================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-visual {
        order: -1;
    }

    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .process-timeline::before {
        display: none;
    }

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

    .cta-card {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 48px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 11, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 32px;
        z-index: 999;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a:not(.btn) {
        font-size: 1.2rem;
        color: var(--color-text);
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .hero-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .hero-actions {
        margin-bottom: 40px;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }

    .process-step {
        text-align: left;
        display: flex;
        gap: 20px;
        align-items: flex-start;
    }

    .step-number {
        flex-shrink: 0;
        margin-bottom: 0;
    }

    .cases-grid {
        grid-template-columns: 1fr;
    }

    .cta-card {
        padding: 32px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .trust-logos {
        gap: 16px;
    }

    .trust-item {
        font-size: 0.8rem;
        padding: 6px 14px;
    }
}