:root {
            --white: #FFFFFF;
            --bg: #FAF9F7;
            --text: #1a1a2e;
            --text-secondary: #5a5a6e;
            --text-tertiary: #8a8a9a;
            --text-on-hero: #2a2a3e;
            --text-on-hero-sub: #4a4a5e;
            --accent: #463B5E;
            --accent-soft: rgba(70,59,94,0.08);
            --accent-hover: #352C4A;
            --border: #E8E6E1;
            --border-light: rgba(255,255,255,0.5);
            --green: #1D9E75;
            --green-soft: rgba(29,158,117,0.1);
            --surface: #FFFFFF;
            --card-glass: rgba(255,255,255,0.55);
            --card-glass-border: rgba(255,255,255,0.6);
            --serif: 'Instrument Serif', Georgia, serif;
            --sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
            --mono: 'SF Mono', 'Menlo', 'Consolas', monospace;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        #how-it-works,
        #for-platforms,
        #faq,
        #pilot {
            scroll-margin-top: 84px;
        }

        body {
            font-family: var(--sans);
            color: var(--text);
            background: var(--white);
            line-height: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        /* ==================== NAV ==================== */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 100;
            padding: 0 24px;
            transition: background 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s ease;
        }
        nav.scrolled {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }
        .nav-inner {
            max-width: 1080px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .logo {
            font-family: var(--serif);
            font-size: 22px;
            font-weight: 400;
            color: var(--text);
            text-decoration: none;
            letter-spacing: -0.3px;
            transition: color 0.3s;
        }
        .nav-links { display: flex; gap: 32px; align-items: center; }
        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s;
            letter-spacing: 0.1px;
        }
        .nav-links a:hover { color: var(--text); }
        .nav-cta {
            font-size: 13px !important;
            font-weight: 600 !important;
            color: var(--white) !important;
            background: var(--accent);
            padding: 8px 20px;
            border-radius: 8px;
            transition: background 0.2s, transform 0.2s;
        }
        .nav-cta:hover {
            background: var(--accent-hover) !important;
            transform: translateY(-1px);
        }

        /* ==================== HERO ==================== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 60px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            z-index: 0;
            background-image: url('hero-bg.png');
            background-size: cover;
            background-position: center 40%;
            background-repeat: no-repeat;
            animation: kenBurns 20s ease-in-out infinite alternate;
        }
        @keyframes kenBurns {
            0% { transform: scale(1); }
            100% { transform: scale(1.05); }
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: linear-gradient(
                180deg,
                rgba(255,255,255,0.15) 0%,
                rgba(255,255,255,0.05) 30%,
                rgba(255,255,255,0.1) 60%,
                rgba(255,255,255,0.88) 90%,
                rgba(255,255,255,1) 100%
            );
        }
        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 960px;
        }
        .hero h1 {
            font-family: var(--serif);
            font-size: 3.65rem;
            font-weight: 400;
            line-height: 0.93;
            letter-spacing: -0.038em;
            color: var(--text-on-hero);
            margin-bottom: 16px;
            text-wrap: balance;
        }
        .hero-sub {
            font-family: var(--serif);
            font-size: clamp(18px, 2.5vw, 24px);
            font-weight: 400;
            color: var(--text-on-hero-sub);
            margin-bottom: 12px;
            font-style: italic;
            opacity: 0.85;
        }
        .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 36px;
            line-height: 1.65;
        }
        .hero-ctas {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--sans);
            font-size: 15px;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 10px;
            text-decoration: none;
            transition: all 0.25s ease;
            cursor: pointer;
            border: none;
            letter-spacing: 0.1px;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--white);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(70,59,94,0.2);
        }
        .btn-secondary {
            background: rgba(255,255,255,0.7);
            color: var(--text);
            border: 1px solid var(--border);
            backdrop-filter: blur(8px);
        }
        .btn-secondary:hover {
            background: var(--white);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        /* ==================== PROBLEM SECTION ==================== */
        .problem-section {
            padding: 80px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
            background: var(--white);
        }
        .problem-section .container {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        .section-label {
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 2.5px;
            text-transform: uppercase;
            color: var(--text-tertiary);
            margin-bottom: 16px;
        }
        .problem-section h2,
        .how-header h2,
        .platforms-header h2,
        .trust-card h3,
        .faq-header h2,
        .pilot-card h2 {
            font-family: var(--serif);
            font-size: 2.6rem;
            font-weight: 400;
            line-height: 1.05;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: -0.03em;
        }
        .problem-section p,
        .how-header p,
        .platforms-header p,
        .trust-card p,
        .pilot-card > p {
            font-size: 17px;
            color: rgba(26,26,46,0.6);
            line-height: 1.7;
        }
        .how-header p,
        .platforms-header p {
            margin-bottom: 36px;
        }

        /* ==================== SHIFT SECTION ==================== */
        .shift-section {
            padding: 0 24px 80px;
            background: var(--white);
        }
        .shift-container {
            max-width: 920px;
            margin: 0 auto;
        }
        .shift-intro {
            text-align: center;
            margin-bottom: 0;
        }
        .shift-divider {
            height: 1px;
            background: var(--border);
            opacity: 0.9;
            margin-bottom: 20px;
        }
        .shift-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 36px;
            text-align: left;
        }
        .shift-col h3 {
            font-family: var(--sans);
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            letter-spacing: 0.1px;
            margin-bottom: 10px;
        }
        .shift-col p {
            font-size: 15px;
            color: rgba(26,26,46,0.6);
            line-height: 1.7;
        }

        /* ==================== HOW IT WORKS ==================== */
        .how-section {
            padding: 80px 24px;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .how-section .container {
            max-width: 1000px;
            margin: 0 auto;
        }
        .how-header {
            text-align: center;
            margin-bottom: 0;
        }
        .how-header h2 {
            margin-bottom: 20px;
        }
        .how-header p {
            max-width: 720px;
            margin: 0 auto;
        }
        #how-it-works iframe {
            min-height: 850px;
        }

        /* ==================== FOR PLATFORMS ==================== */
        .platforms-section {
            padding: 80px 24px;
            background: var(--white);
        }
        .platforms-section .container {
            max-width: 1100px;
            margin: 0 auto;
        }
        .platforms-header {
            text-align: center;
            margin-bottom: 0;
        }
        .platforms-header h2 {
            margin-bottom: 20px;
        }
        .platforms-header p {
            max-width: 720px;
            margin: 0 auto;
        }
        .platforms-benefits {
            max-width: 1100px;
            margin: 0 auto;
            margin-top: 60px;
        }
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 36px;
            text-align: left;
            padding-top: 8px;
        }
        .benefit-col {
            padding-left: 18px;
            border-left: 1px solid rgba(232,230,225,0.0);
        }
        .benefit-col:first-child {
            padding-left: 0;
            border-left: none;
        }
        .benefit-num {
            font-family: var(--serif);
            font-size: 46px;
            line-height: 1;
            letter-spacing: -0.03em;
            color: rgba(26,26,46,0.2);
            margin-bottom: 14px;
        }
        .benefit-col h4 {
            font-family: var(--sans);
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: 0.1px;
        }
        .benefit-col p {
            font-size: 15px;
            color: rgba(26,26,46,0.6);
            line-height: 1.7;
        }

        /* ==================== CREDIBILITY BANNER ==================== */
        .credibility-section {
            padding: 0 24px 80px;
        }
        .credibility-card {
            max-width: 860px;
            margin: 0 auto;
            background: #F5F0EB;
            border-left: 3px solid var(--accent);
            border-radius: 4px 12px 12px 4px;
            padding: 36px 44px;
        }
        .credibility-card h3 {
            font-family: var(--serif);
            font-size: 22px;
            font-weight: 400;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .credibility-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .credibility-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            text-decoration: none;
            transition: opacity 0.2s;
        }
        .credibility-link:hover {
            opacity: 0.7;
        }

        /* ==================== TRUST SECTION ==================== */
        .trust-section {
            margin-top: 80px;
            padding: 0 24px 80px;
            background: var(--white);
        }
        .trust-card {
            max-width: 860px;
            margin: 0 auto;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 36px 56px;
            text-align: center;
        }
        .trust-card h3 {
            margin-bottom: 20px;
        }
        .trust-card p {
            max-width: 100%;
            margin: 0;
        }

        /* ==================== FAQ SECTION ==================== */
        .faq-section {
            padding: 80px 24px;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .faq-section .container {
            max-width: 720px;
            margin: 0 auto;
        }
        .faq-header {
            margin-bottom: 36px;
        }
        .faq-header h2 {
            margin-bottom: 0;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-item:first-child { border-top: 1px solid var(--border); }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            letter-spacing: -0.1px;
            transition: color 0.2s;
            user-select: none;
        }
        .faq-q:hover { color: var(--accent); }
        .faq-q svg {
            width: 20px;
            height: 20px;
            stroke: var(--text-tertiary);
            fill: none;
            stroke-width: 1.5;
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item.open .faq-q svg {
            transform: rotate(180deg);
        }
        .faq-a {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.65;
            padding: 0 0 20px;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ==================== PILOT CTA ==================== */
        .pilot-section {
            padding: 80px 24px;
            position: relative;
            overflow: hidden;
        }
        .pilot-section::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background-image: var(--hero-bg);
            background-size: cover;
            background-position: center 30%;
            filter: blur(30px) saturate(0.6);
            opacity: 0.12;
            z-index: 0;
        }
        .pilot-card {
            max-width: 640px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .pilot-card h2 {
            margin-bottom: 20px;
        }
        .pilot-card > p {
            margin-bottom: 36px;
        }
        .pilot-card .btn-primary {
            justify-content: center;
            padding: 14px 28px;
        }

        /* ==================== FOOTER ==================== */
        footer {
            border-top: 1px solid var(--border);
            padding: 60px 24px 40px;
            background: var(--surface);
        }
        .footer-inner {
            max-width: 1000px;
            margin: 0 auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand {
            font-family: var(--serif);
            font-size: 20px;
            color: var(--text);
            margin-bottom: 12px;
        }
        .footer-brand-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 260px;
        }
        .footer-col h4 {
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--text-tertiary);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            padding: 5px 0;
            transition: color 0.2s;
        }
        .footer-col a:hover { color: var(--text); }
        .footer-col .external {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .footer-col .external svg {
            width: 10px;
            height: 10px;
            stroke: var(--text-tertiary);
            fill: none;
            stroke-width: 2;
        }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-tertiary);
        }
        .footer-bottom a {
            font-size: 13px;
            color: var(--text-secondary);
            text-decoration: none;
        }

        /* ==================== ANIMATIONS ==================== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ==================== MOBILE ==================== */
        @media (max-width: 768px) {
            .nav-links a:not(.nav-cta) { display: none; }
            .hero { min-height: 90vh; padding-top: 100px; }
            .hero h1 { font-size: 4.85rem; }
            #how-it-works iframe {
                min-height: 1100px;
            }
            .shift-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .trust-card { padding: 28px 24px; }
        }
        @media (max-width: 480px) {
            .hero h1 { font-size: 3.65rem; }
            .problem-section h2,
            .how-header h2,
            .platforms-header h2,
            .trust-card h3,
            .faq-header h2,
            .pilot-card h2 { font-size: 2.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; gap: 8px; align-items: flex-start; }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .hero h1 { font-size: 4.85rem; }
            .problem-section h2,
            .how-header h2,
            .platforms-header h2,
            .trust-card h3,
            .faq-header h2,
            .pilot-card h2 { font-size: 3.4rem; }
        }
        @media (min-width: 1025px) {
            .hero h1 { font-size: 6.4rem; }
            .problem-section h2,
            .how-header h2,
            .platforms-header h2,
            .trust-card h3,
            .faq-header h2,
            .pilot-card h2 { font-size: 4.2rem; }
        }
        @media (min-width: 1025px) {
            .platforms-header h2,
            .trust-card h3 {
                white-space: nowrap;
            }
        }
        @media (max-width: 1024px) {
            .benefits-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
                gap: 28px;
            }
            .benefit-col {
                padding-left: 0;
                border-left: none;
            }
        }
        @media (max-width: 560px) {
            .benefits-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .benefit-num { font-size: 40px; }
        }