.features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .feature-tile {
            padding: 28px;
            border-radius: 14px;
            background: var(--bg-1);
            border: 1px solid var(--line);
            min-height: 240px;
            position: relative;
            overflow: hidden;
        }
        .feature-tile .num {
            font-family: var(--font-mono);
            font-size: 11px;
            color: var(--accent);
            letter-spacing: 0.12em;
            margin-bottom: 16px;
        }
        .feature-tile .title {
            font-family: var(--font-display);
            font-size: 22px;
            font-weight: 500;
            letter-spacing: -0.015em;
            margin-bottom: 12px;
            color: var(--fg-0);
        }
        .feature-tile .body {
            font-size: 14px;
            color: var(--fg-1);
            line-height: 1.6;
        }

        .spec-section {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 80px;
            align-items: flex-start;
            max-width: 1440px;
            margin: 0 auto;
        }
        .spec-section h3 {
            font-family: var(--font-display);
            font-size: 36px;
            font-weight: 500;
            letter-spacing: -0.025em;
            line-height: 1.1;
            margin: 0;
            color: var(--fg-0);
        }
        .spec-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0 64px;
        }
        .spec-row {
            padding: 20px 0;
            border-top: 1px solid var(--line);
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            gap: 16px;
        }
        .spec-row.last { border-bottom: 1px solid var(--line); }
        .spec-row .k { font-size: 13px; color: var(--fg-2); }
        .spec-row .v { font-family: var(--font-mono); font-size: 14px; color: var(--fg-0); }

        @media (max-width: 1100px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .spec-section { grid-template-columns: 1fr; gap: 32px; }
        }
        @media (max-width: 700px) {
            .features-grid { grid-template-columns: 1fr; }
            .spec-grid { grid-template-columns: 1fr; gap: 0; }
        }
        @media (max-width: 560px) {
            .feature-tile { padding: 20px; min-height: 0; }
            .feature-tile .title { font-size: 18px; }
            .spec-section h3 { font-size: 26px; }
        }