:root {
            --bg-color: #0b0b0c;
            --text-main: #f3f3f3;
            --text-muted: #8e8e93;
            --accent-blue: #007aff;
            --figma-blue: #0ea5e9;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-full: 9999px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            --font-serif: 'Newsreader', serif;
            --card-bg: #161618;
            --border-color: rgba(255, 255, 255, 0.1);
            --brand-footer-color: rgba(255, 255, 255, 0.12);
            --btn-bg: rgba(255, 255, 255, 0.08);
            --btn-border: rgba(255, 255, 255, 0.15);
            --icon-bg: #ffffff;
            --icon-color: #000000;
            --selection-bg: #007aff;
            --selection-text: #ffffff;
        }

        [data-theme="light"] {
            --bg-color: #fbfbfd;
            --text-main: #1d1d1f;
            --text-muted: #6e6e73;
            --accent-blue: #007aff;
            --figma-blue: #0ea5e9;
            --card-bg: #f0f0f2;
            --border-color: rgba(0, 0, 0, 0.1);
            --brand-footer-color: rgba(0, 0, 0, 0.12);
            --btn-bg: rgba(0, 0, 0, 0.05);
            --btn-border: rgba(0, 0, 0, 0.12);
            --icon-bg: #1d1d1f;
            --icon-color: #ffffff;
            --selection-bg: #007aff;
            --selection-text: #ffffff;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, fill 0.4s ease, stroke 0.4s ease;
        }

        ::selection {
            background-color: var(--selection-bg);
            color: var(--selection-text);
        }

        ::-moz-selection {
            background-color: var(--selection-bg);
            color: var(--selection-text);
        }

        html {
            scroll-behavior: smooth;
            height: 100%;
        }

        body {
            background-color: var(--bg-color);
            color: var(--text-main);
            font-family: var(--font-sans);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            margin: 0;
        }

        .actionable {
            transition: transform 0.15s ease, opacity 0.2s ease, color 0.2s ease, background-color 0.4s ease, border-color 0.4s ease;
            display: inline-flex;
            align-items: center;
        }

        .actionable:active {
            transform: scale(0.95) !important;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background-color: var(--bg-color);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: clamp(60px, 8vh, 72px);
        }

        .brand-logo {
            font-size: clamp(1rem, 1.3vw, 1.25rem);
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text-main);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: clamp(16px, 2vw, 24px);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: clamp(16px, 2vw, 24px);
            list-style: none;
        }

        .nav-links .nav-item {
            font-size: clamp(0.9rem, 1.1vw, 1.05rem);
            font-weight: 500;
            color: var(--text-muted);
        }

        .nav-links .nav-item:hover {
            color: var(--text-main);
        }

        .theme-btn {
            background: none;
            border: none;
            color: var(--text-main);
            padding: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-full);
        }

        .theme-btn svg {
            width: clamp(18px, 1.5vw, 22px);
            height: clamp(18px, 1.5vw, 22px);
        }

        .section-hero {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            display: flex;
            align-items: center;
            z-index: 1;
            background-color: var(--bg-color);
        }

        .hero {
            width: 100%;
        }

        .hero-sub {
            font-size: clamp(1.05rem, 1.5vw, 1.35rem);
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 24px;
            font-weight: 400;
            line-height: 1.6;
        }

        .hero-btn {
            display: inline-flex;
            align-items: center;
            padding: 16px 28px;
            background-color: var(--btn-bg);
            border-radius: var(--radius-full);
            gap: 0.5em;
            margin-top: 24px;
            margin-bottom: 36px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            font-size: clamp(1.2rem, 2.2vw, 1.8rem);
        }

        .hero-btn-icon {
            width: 1em;
            height: 1em;
            font-size: inherit;
            border-radius: 50%;
            background-color: var(--icon-bg);
            color: var(--icon-color);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .hero-btn-icon svg,
        .hero-btn-icon i {
            width: 0.6em;
            height: 0.6em;
            font-size: inherit;
        }

        .hero-btn-text {
            font-size: inherit;
            font-weight: 600;
            color: var(--text-main);
            letter-spacing: -0.01em;
            line-height: 1;
        }

        .hero-title {
            font-size: clamp(2.4rem, 5.5vw, 4.8rem);
            font-weight: 700;
            line-height: 1.08;
            letter-spacing: -0.03em;
        }

        .hero-title .serif-italic {
            font-family: var(--font-serif);
            font-weight: 400;
            font-style: italic;
            display: block;
            margin-top: 4px;
        }

        .figma-selection-wrapper {
            position: relative;
            display: inline-block;
            margin-right: 8px;
        }

        .figma-tag {
            position: absolute;
            top: -20px;
            left: -2px;
            font-size: clamp(0.75rem, 0.9vw, 0.85rem);
            font-weight: 600;
            color: var(--figma-blue);
            font-family: var(--font-sans);
            letter-spacing: 0;
            line-height: 1;
        }

        .figma-box {
            position: relative;
            outline: 1.5px solid var(--figma-blue);
            outline-offset: 4px;
            display: inline-block;
        }

        .figma-handle {
            position: absolute;
            width: 7px;
            height: 7px;
            background: #ffffff;
            border: 1.5px solid var(--figma-blue);
            border-radius: 1px;
            z-index: 2;
        }

        .figma-handle.tl { top: -8px; left: -8px; }
        .figma-handle.tc { top: -8px; left: 50%; transform: translateX(-50%); }
        .figma-handle.tr { top: -8px; right: -8px; }
        .figma-handle.ml { top: 50%; left: -8px; transform: translateY(-50%); }
        .figma-handle.mr { top: 50%; right: -8px; transform: translateY(-50%); }
        .figma-handle.bl { bottom: -8px; left: -8px; }
        .figma-handle.bc { bottom: -8px; left: 50%; transform: translateX(-50%); }
        .figma-handle.br { bottom: -8px; right: -8px; }

        .figma-cursor-badge {
            position: absolute;
            bottom: 0;
            left: 20px;
            z-index: 5;
            display: flex;
            align-items: center;
            gap: 5px;
            pointer-events: none;
        }

        .figma-cursor {
            width: 14px;
            height: 14px;
            color: var(--figma-blue);
            flex-shrink: 0;
        }

        .figma-badge-pill {
            background-color: var(--figma-blue);
            color: #ffffff;
            font-family: var(--font-sans);
            font-size: 11px;
            font-weight: 500;
            letter-spacing: 0;
            padding: 3px 8px;
            border-radius: var(--radius-md);
            white-space: nowrap;
            line-height: 1;
        }

        .hero-spacer {
            height: 100vh;
            width: 100%;
        }

        .section-footer {
            height: 92vh;
            min-height: 92vh;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            position: relative;
            z-index: 10;
            background-color: var(--bg-color);
            border-top: 1px solid var(--border-color);
        }

        .ticker-bar {
            width: 100%;
            background-color: var(--figma-blue);
            padding: 14px 0;
            overflow: hidden;
            white-space: nowrap;
            display: flex;
            flex-shrink: 0;
        }

        .ticker-track {
            display: flex;
            gap: 0;
            width: max-content;
            animation: scrollRight 25s linear infinite;
        }

        .ticker-content {
            display: flex;
            align-items: center;
            gap: 24px;
            padding-right: 24px;
        }

        .ticker-item {
            font-size: clamp(0.85rem, 1.1vw, 1.05rem);
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: #ffffff;
            display: inline-flex;
            align-items: center;
            gap: 24px;
        }

        @keyframes scrollRight {
            0% {
                transform: translateX(-50%);
            }
            100% {
                transform: translateX(0%);
            }
        }

        footer {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding-top: clamp(60px, 5vh, 60px);
            padding-bottom: 0;
            overflow: hidden;
        }

        .footer-content {
            width: 100%;
        }

        .footer-title {
            font-size: clamp(2.5rem, 4vw, 4rem);
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .footer-desc {
            font-size: clamp(1.05rem, 1.4vw, 1.3rem);
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-link-item {
            font-size: clamp(1.4rem, 2vw, 2.2rem);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            width: fit-content;
            color: var(--text-main);
            text-decoration: none;
        }

        .footer-link-item svg {
            width: clamp(20px, 1.8vw, 28px);
            height: clamp(20px, 1.8vw, 28px);
            stroke-width: 2.5;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            padding-top: 10px;
            padding-bottom: 10px;
            overflow: hidden;
        }

        .footer-brand-text {
            font-size: clamp(2.5rem, 9vw, 16rem);
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: -0.03em;
            color: var(--brand-footer-color);
            white-space: nowrap;
            line-height: 0.9;
            width: 100%;
        }

        .scroll-top-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 99;
            font-size: 0.75rem;
            font-weight: 700;
        }
      
        .scroll-top-btn svg {
            display: none;
            width: 20px;
            height: 20px;
        }

        .scroll-top-btn.completed svg {
            display: block;
        }

        .scroll-top-btn.completed .scroll-text {
            display: none;
        }