:root {
            --primary: #0080CC; /* エレクトリック・ブルー */
            --bg-base: #E6E9ED; /* クールグレー */
            --bg-deep: #DCE1E7; /* 深めのクールグレー */
            --text-main: #1A1A1A;
            --text-muted: #4A5568;
        }

        body {
            font-family: 'Inter', 'Noto Serif JP', serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            overflow-x: hidden;
            line-height: 1.6;
        }

        .serif { font-family: 'Noto Serif JP', serif; }

        /* スクロールバー */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-deep); }
        ::-webkit-scrollbar-thumb { background: var(--primary); }

        .section-padding { padding: 10rem 2rem; }

        .hero-title {
            font-size: clamp(2.5rem, 8vw, 6rem);
            line-height: 1.1;
            letter-spacing: -0.02em;
            color: var(--text-main);
        }

        /* ヘッダーの視認性向上 */
        nav {
            background: rgba(230, 233, 237, 0.8);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .nav-link {
            position: relative;
            color: var(--text-main);
            transition: color 0.3s ease;
            cursor: pointer;
            pointer-events: auto;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -4px; left: 0;
            width: 0; height: 2px;
            background: var(--primary);
            transition: width 0.4s ease;
        }
        .nav-link:hover { color: var(--primary); }
        .nav-link:hover::after { width: 100%; }

        /* 初期表示のチラつき防止 */
        .page-content { display: none; opacity: 0; }
        .page-content.active { display: block; opacity: 1; }

        .reveal {
            display: inline-block;
            transform: translateY(100%);
            transition: transform 1.2s cubic-bezier(0.22, 1, 0.36, 1);
        }
        .active .reveal { transform: translateY(0); }

        /* 透かし文字「鎬」 */
        .watermark {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 50vw;
            font-family: 'Noto Serif JP', serif;
            font-weight: 900;
            color: rgba(0, 0, 0, 0.03);
            white-space: nowrap;
            pointer-events: none;
            z-index: 0;
        }

        .grain-overlay {
            position: fixed;
            top: 0; left: 0; width: 100%; height: 100%;
            background-image: url("https://www.transparenttextures.com/patterns/asfalt-dark.png");
            opacity: 0.03;
            pointer-events: none;
            z-index: 100;
        }

        .card {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            transition: transform 0.3s ease;
        }
        .card:hover { transform: translateY(-5px); }

        .accent-text { color: var(--primary); }
        .bg-accent { background-color: var(--primary); }

        .work-category-title {
            border-left: 4px solid var(--primary);
            padding-left: 1rem;
            margin-bottom: 2rem;
        }

        @keyframes scroll-line {
            0% { transform: translateY(-100%); }
            100% { transform: translateY(100%); }
        }
        .animate-scroll-line { animation: scroll-line 2s infinite; }

        .image-placeholder {
            background: var(--bg-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            aspect-ratio: 16/9;
            border-radius: 4px;
            overflow: hidden;
        }

        @media (max-width: 768px) {
            .section-padding { padding: 6rem 1.5rem; }
            .watermark { font-size: 80vw; }
        }

/* 追加：現在ページのナビ強調 */
.nav-link.active { color: var(--primary); }
.nav-link.active::after { width: 100%; }