/* ============================================================
           TOKENS — quarry palette: cement, basalt, marble fleck, brass, verdigris
           ============================================================ */
        :root {
            --stone-50: #F1ECE2;
            --stone-100: #E7DECC;
            --stone-200: #D9CBAD;
            --basalt-900: #16171A;
            --basalt-800: #212226;
            --basalt-700: #2C2D32;
            --brass-500: #AD8348;
            --brass-400: #C9A469;
            --verde-600: #54614C;
            --verde-500: #6C7A62;
            --fleck-50: #FAF7EF;
            --ink-800: #2A271F;
            --ink-600: #524C3F;
            --ink-400: #8A8371;
            --line: rgba(42, 39, 31, 0.14);
            --line-dark: rgba(250, 247, 239, 0.14);
            --radius: 2px;
            --serif: 'Playfair Display', 'Times New Roman', serif;
            --sans: 'Be Vietnam Pro', -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--sans);
            background: var(--stone-50);
            color: var(--ink-800);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        :focus-visible {
            outline: 2px solid var(--brass-500);
            outline-offset: 3px;
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation: none !important;
                transition: none !important;
            }
        }

        .eyebrow {
            font-family: var(--sans);
            font-weight: 700;
            font-size: 0.72rem;
            letter-spacing: 0.22em;
            text-transform: uppercase;
            color: var(--brass-500);
            display: flex;
            align-items: center;
            gap: 0.6em;
        }
        .eyebrow::before {
            content: '';
            width: 22px;
            height: 1px;
            background: var(--brass-500);
        }

        /* ============================================================
           TERRAZZO SWATCH — signature texture
           ============================================================ */
        .swatch-dark,
        .swatch-light {
            background-repeat: repeat;
        }
        .swatch-dark {
            background-color: var(--basalt-900);
            background-image:
                radial-gradient(circle at 12% 18%, var(--fleck-50) 5px, transparent 5px),
                radial-gradient(circle at 46% 8%, var(--brass-400) 6px, transparent 6px),
                radial-gradient(circle at 78% 22%, var(--verde-500) 4px, transparent 4px),
                radial-gradient(circle at 92% 58%, var(--fleck-50) 3px, transparent 3px),
                radial-gradient(circle at 30% 52%, var(--brass-400) 3.5px, transparent 3.5px),
                radial-gradient(circle at 62% 68%, var(--fleck-50) 6px, transparent 6px),
                radial-gradient(circle at 8% 78%, var(--verde-500) 5px, transparent 5px),
                radial-gradient(circle at 86% 88%, var(--brass-400) 4px, transparent 4px),
                radial-gradient(circle at 52% 38%, var(--fleck-50) 4px, transparent 4px),
                radial-gradient(circle at 24% 94%, var(--brass-400) 3px, transparent 3px);
            background-size: 190px 190px;
        }
        .swatch-light {
            background-color: var(--stone-100);
            background-image:
                radial-gradient(circle at 12% 18%, var(--basalt-900) 4px, transparent 4px),
                radial-gradient(circle at 46% 8%, var(--brass-500) 6px, transparent 6px),
                radial-gradient(circle at 78% 22%, var(--verde-600) 4px, transparent 4px),
                radial-gradient(circle at 92% 58%, var(--basalt-900) 3px, transparent 3px),
                radial-gradient(circle at 30% 52%, var(--brass-500) 3.5px, transparent 3.5px),
                radial-gradient(circle at 62% 68%, var(--basalt-900) 5px, transparent 5px),
                radial-gradient(circle at 8% 78%, var(--verde-600) 5px, transparent 5px),
                radial-gradient(circle at 86% 88%, var(--brass-500) 4px, transparent 4px),
                radial-gradient(circle at 52% 38%, var(--basalt-900) 4px, transparent 4px),
                radial-gradient(circle at 24% 94%, var(--brass-500) 3px, transparent 3px);
            background-size: 170px 170px;
        }
        .swatch-divider {
            height: 10px;
            width: 100%;
        }

        .specimen-tag {
            display: inline-flex;
            align-items: baseline;
            gap: 0.5em;
            font-family: var(--sans);
            font-weight: 700;
            font-size: 0.68rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--fleck-50);
            background: var(--basalt-900);
            padding: 0.4em 0.7em;
            border-radius: var(--radius);
            font-variant-numeric: tabular-nums;
        }
        .specimen-tag i {
            color: var(--brass-400);
            font-size: 0.9em;
        }

        /* ============================================================
           HEADER
           ============================================================ */
        header {
            position: sticky;
            top: 0;
            z-index: 200;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 2.5rem;
            background: rgba(241, 236, 226, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--line);
        }
        .logo {
            font-family: var(--serif);
            font-weight: 700;
            font-size: 1.5rem;
            letter-spacing: 0.02em;
            color: var(--ink-800);
        }
        .logo span {
            color: var(--brass-500);
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2.2rem;
        }
        .nav-links a {
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--ink-600);
            position: relative;
            padding-bottom: 4px;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 1px;
            background: var(--brass-500);
            transition: width 0.25s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--ink-800);
        }
        .header-actions {
            display: flex;
            gap: 0.8rem;
        }
        .action-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5em;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            padding: 0.65em 1.1em;
            border-radius: var(--radius);
            border: 1px solid var(--ink-800);
            color: var(--ink-800);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .action-btn:hover {
            background: var(--ink-800);
            color: var(--stone-50);
        }
        .zalo-btn {
            background: var(--brass-500);
            border-color: var(--brass-500);
            color: var(--fleck-50);
        }
        .zalo-btn:hover {
            background: var(--brass-400);
            border-color: var(--brass-400);
            color: var(--basalt-900);
        }
        .mobile-only {
            display: none;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--ink-800);
            transition: 0.25s;
        }

        /* ============================================================
           HERO
           ============================================================ */
        .hero {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            align-items: center;
            gap: 3rem;
            padding: 4.5rem 2.5rem 5rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        .hero-content h1 {
            font-family: var(--serif);
            font-weight: 600;
            font-size: clamp(2.2rem, 3.6vw, 3.4rem);
            line-height: 1.12;
            color: var(--ink-800);
            margin: 1.1rem 0 1.3rem;
            letter-spacing: -0.01em;
        }
        .hero-content h1 em {
            font-style: italic;
            color: var(--brass-500);
            font-weight: 500;
        }
        .hero-content>p.lede {
            font-size: 1.05rem;
            color: var(--ink-600);
            max-width: 36em;
            margin-bottom: 1.8rem;
        }
        .hero-features {
            display: flex;
            flex-wrap: wrap;
            gap: 1.4rem;
            margin-bottom: 2.2rem;
        }
        .hero-features span {
            display: flex;
            align-items: center;
            gap: 0.5em;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--ink-800);
        }
        .hero-features i {
            color: var(--verde-600);
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1.8rem;
        }
        .btn-primary {
            background: var(--basalt-900);
            color: var(--fleck-50);
            padding: 1em 1.9em;
            font-weight: 700;
            font-size: 0.82rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            border-radius: var(--radius);
            transition: transform 0.2s ease, background 0.2s ease;
        }
        .btn-primary:hover {
            background: var(--brass-500);
            transform: translateY(-2px);
        }
        .btn-outline {
            border: 1px solid var(--ink-800);
            color: var(--ink-800);
            padding: 1em 1.9em;
            font-weight: 700;
            font-size: 0.82rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            border-radius: var(--radius);
            transition: all 0.2s ease;
        }
        .btn-outline:hover {
            background: var(--ink-800);
            color: var(--stone-50);
        }
        .hero-trust {
            font-size: 0.78rem;
            color: var(--ink-400);
            letter-spacing: 0.04em;
            border-top: 1px solid var(--line);
            padding-top: 1.1rem;
        }

        .hero-visual {
            position: relative;
        }
        .swatch-card {
            aspect-ratio: 1/1.05;
            border-radius: var(--radius);
            position: relative;
            overflow: hidden;
            box-shadow: 0 30px 60px -20px rgba(22, 23, 26, 0.35);
        }
        .swatch-card .swatch-dark {
            position: absolute;
            inset: 0;
        }
        .swatch-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(22, 23, 26, 0.05), rgba(22, 23, 26, 0.55) 90%);
        }
        .swatch-card-label {
            position: absolute;
            left: 1.6rem;
            bottom: 1.6rem;
            z-index: 2;
            color: var(--fleck-50);
        }
        .swatch-card-label .specimen-tag {
            margin-bottom: 0.7rem;
            background: rgba(22, 23, 26, 0.55);
            backdrop-filter: blur(4px);
        }
        .swatch-card-label h3 {
            font-family: var(--serif);
            font-style: italic;
            font-weight: 500;
            font-size: 1.4rem;
        }

        /* ============================================================
           DECISION STRIP
           ============================================================ */
        .decision-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
            padding: 3rem 2.5rem;
            max-width: 1400px;
            margin: 0 auto;
            background: var(--fleck-50);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .decision-item {
            text-align: center;
        }
        .decision-item i {
            font-size: 2rem;
            color: var(--brass-500);
            margin-bottom: 0.5rem;
            display: block;
        }
        .decision-item h4 {
            font-family: var(--sans);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--ink-800);
            margin-bottom: 0.2rem;
        }
        .decision-item p {
            font-size: 0.85rem;
            color: var(--ink-400);
        }

        /* ============================================================
           UNIQUE SECTION
           ============================================================ */
        .unique-section {
            padding: 5.5rem 2.5rem;
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .unique-section .section-header {
            text-align: left;
            max-width: 100%;
            margin: 0;
        }
        .unique-section .section-header .eyebrow {
            justify-content: flex-start;
        }
        .unique-section .section-header .eyebrow::after {
            content: '';
            width: 22px;
            height: 1px;
            background: var(--brass-500);
        }
        .unique-section .section-header h2 {
            font-size: clamp(1.7rem, 2.6vw, 2.4rem);
            margin-bottom: 0.7rem;
        }
        .unique-section .section-header p {
            color: var(--ink-400);
            font-size: 0.98rem;
            max-width: 36em;
        }
        .unique-visual {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.5rem;
        }
        .unique-visual img {
            width: 100%;
            aspect-ratio: 1/1;
            object-fit: cover;
            border-radius: var(--radius);
            filter: grayscale(20%);
            transition: filter 0.3s ease;
        }
        .unique-visual img:hover {
            filter: grayscale(0%);
        }
        .unique-visual img:first-child {
            grid-column: 1 / 3;
            aspect-ratio: 2/1;
        }

        /* ============================================================
           SECTION SHELL
           ============================================================ */
        .section {
            padding: 5.5rem 2.5rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 3.2rem;
        }
        .section-header .eyebrow {
            justify-content: center;
            margin-bottom: 0.9rem;
        }
        .section-header .eyebrow::after {
            content: '';
            width: 22px;
            height: 1px;
            background: var(--brass-500);
        }
        .section-header h2 {
            font-family: var(--serif);
            font-weight: 600;
            font-size: clamp(1.7rem, 2.6vw, 2.4rem);
            color: var(--ink-800);
            margin-bottom: 0.7rem;
        }
        .section-header p {
            color: var(--ink-400);
            font-size: 0.98rem;
        }
        .dark-section {
            background: var(--basalt-900);
            color: var(--fleck-50);
        }
        .dark-section .section-header p {
            color: rgba(250, 247, 239, 0.55);
        }

        /* ============================================================
           PROJECTS
           ============================================================ */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.6rem;
        }
        .project-card {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius);
            border: 1px solid var(--line-dark);
        }
        .project-card img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            filter: grayscale(30%) contrast(1.05);
            transition: filter 0.4s ease, transform 0.5s ease;
        }
        .project-card:hover img {
            filter: grayscale(0%);
            transform: scale(1.04);
        }
        .project-info {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            padding: 1.2rem 1.3rem;
            background: linear-gradient(0deg, rgba(22, 23, 26, 0.92), transparent);
        }
        .project-info h4 {
            font-family: var(--serif);
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--fleck-50);
        }
        .project-info p {
            font-size: 0.8rem;
            color: var(--brass-400);
            margin-top: 0.2rem;
        }

        /* ============================================================
           COLLECTION / FILTER / PRODUCT GRID
           ============================================================ */
        .filter-bar {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 0.7rem;
            margin-bottom: 2.8rem;
        }
        .filter-btn {
            padding: 0.6em 1.3em;
            border: 1px solid var(--line);
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--ink-600);
            transition: all 0.2s ease;
            cursor: pointer;
            background: transparent;
        }
        .filter-btn:hover {
            border-color: var(--brass-500);
            color: var(--ink-800);
        }
        .filter-btn.active {
            background: var(--basalt-900);
            border-color: var(--basalt-900);
            color: var(--fleck-50);
        }

        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
            min-height: 400px;
            transition: opacity 0.3s ease;
        }
        .product-grid.loading {
            opacity: 0.5;
        }

        .product-card {
            background: var(--fleck-50);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            display: block;
        }
        .product-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 40px -20px rgba(22, 23, 26, 0.25);
        }
        .card-media {
            aspect-ratio: 1/1;
            position: relative;
            overflow: hidden;
            background: var(--basalt-800);
        }
        .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .product-card:hover .card-media img {
            transform: scale(1.04);
        }
        .card-media .card-badge {
            position: absolute;
            top: 0.8rem;
            right: 0.8rem;
            background: var(--brass-500);
            color: var(--basalt-900);
            font-size: 0.6rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            padding: 0.3rem 0.7rem;
            border-radius: var(--radius);
            z-index: 2;
        }
        .card-media .specimen-tag {
            position: absolute;
            top: 0.8rem;
            left: 0.8rem;
            z-index: 2;
        }
        .card-info {
            padding: 1.3rem 1.4rem 1.6rem;
        }
        .card-cat {
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--brass-500);
        }
        .card-title {
            font-family: var(--serif);
            font-weight: 600;
            font-size: 1.15rem;
            margin: 0.35rem 0 0.4rem;
            color: var(--ink-800);
        }
        .rating {
            color: var(--brass-500);
            font-size: 0.82rem;
            margin-bottom: 0.4rem;
        }
        .rating i {
            margin-right: 1px;
        }
        .price-wrap {
            font-size: 0.83rem;
            color: var(--ink-400);
            line-height: 1.7;
            margin-bottom: 0.8rem;
        }
        .card-actions {
            display: flex;
            gap: 0.6rem;
        }
        .card-actions .action-btn {
            flex: 1;
            justify-content: center;
            padding: 0.6em 0.8em;
            font-size: 0.72rem;
        }

        /* ============================================================
           PAGINATION
           ============================================================ */
        .pagination-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.8rem;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--line);
        }
        .pagination {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
            justify-content: center;
        }
        .page-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 0.8rem;
            border-radius: var(--radius);
            border: 1px solid var(--line);
            background: transparent;
            color: var(--ink-600);
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .page-btn:hover:not(.active-page) {
            border-color: var(--brass-500);
            color: var(--ink-800);
            background: var(--fleck-50);
        }
        .page-btn.active-page {
            background: var(--basalt-900);
            border-color: var(--basalt-900);
            color: var(--fleck-50);
        }
        .page-btn:disabled {
            opacity: 0.3;
            cursor: not-allowed;
        }
        .pagination-info {
            font-size: 0.8rem;
            color: var(--ink-400);
            letter-spacing: 0.02em;
        }
        .pagination-arrow {
            font-size: 0.7rem;
        }

        /* ============================================================
           PRICE OBJECTION
           ============================================================ */
        .price-objection {
            background: var(--stone-100);
            padding: 4rem 2.5rem;
            text-align: center;
        }
        .price-objection-inner {
            max-width: 800px;
            margin: 0 auto;
        }
        .price-objection h3 {
            font-family: var(--serif);
            font-weight: 600;
            font-size: clamp(1.5rem, 2.2vw, 2rem);
            margin-bottom: 0.7rem;
        }
        .price-objection p {
            color: var(--ink-600);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .price-objection .pill-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.8rem;
            margin: 1.5rem 0 2rem;
        }
        .price-objection .pill {
            background: var(--fleck-50);
            padding: 0.4em 1.2em;
            border-radius: 999px;
            border: 1px solid var(--line);
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--ink-600);
        }

        /* ============================================================
           CUSTOMIZER
           ============================================================ */
        .customizer-section {
            background: var(--stone-100);
            padding: 5.5rem 2.5rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        .customizer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            max-width: 1000px;
            margin: 0 auto;
        }
        .customizer-option {
            background: var(--fleck-50);
            padding: 2rem;
            border-radius: var(--radius);
            border: 1px solid var(--line);
        }
        .customizer-option h4 {
            font-family: var(--serif);
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }
        .customizer-option label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--ink-600);
            margin-bottom: 0.3rem;
        }
        .customizer-option select,
        .customizer-option input[type="text"] {
            width: 100%;
            padding: 0.8em 1em;
            border-radius: var(--radius);
            border: 1px solid var(--line);
            font-family: var(--sans);
            font-size: 0.9rem;
            background: var(--fleck-50);
        }
        .customizer-option .radio-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 0.5rem;
        }
        .customizer-option .radio-group label {
            font-weight: 400;
            display: flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.85rem;
            color: var(--ink-800);
        }
        .customizer-cta {
            text-align: center;
            margin-top: 2rem;
        }

        /* ============================================================
           TRUST STACK
           ============================================================ */
        .trust-stack {
            background: var(--fleck-50);
            padding: 4rem 2.5rem;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .trust-stack-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .trust-stack-item {
            text-align: center;
        }
        .trust-stack-item i {
            font-size: 2rem;
            color: var(--brass-500);
            margin-bottom: 0.5rem;
        }
        .trust-stack-item h4 {
            font-family: var(--sans);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--ink-800);
            margin-bottom: 0.2rem;
        }
        .trust-stack-item p {
            font-size: 0.85rem;
            color: var(--ink-400);
        }

        /* ============================================================
           PROCESS
           ============================================================ */
        .process-section {
            background: var(--stone-100);
        }
        .process-timeline {
            max-width: 820px;
            margin: 0 auto;
            position: relative;
        }
        .process-timeline::before {
            content: '';
            position: absolute;
            left: 29px;
            top: 8px;
            bottom: 8px;
            width: 1px;
            background: repeating-linear-gradient(0deg, var(--brass-500) 0 6px, transparent 6px 12px);
        }
        .process-step {
            display: flex;
            gap: 1.6rem;
            padding-bottom: 2.4rem;
            position: relative;
        }
        .process-step:last-child {
            padding-bottom: 0;
        }
        .step-num {
            flex-shrink: 0;
            width: 58px;
            height: 58px;
            border-radius: 50%;
            background: var(--basalt-900);
            color: var(--brass-400);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            font-variant-numeric: tabular-nums;
            z-index: 1;
            border: 4px solid var(--stone-100);
        }
        .step-content h4 {
            font-family: var(--serif);
            font-weight: 600;
            font-size: 1.12rem;
            margin-bottom: 0.3rem;
            padding-top: 0.9rem;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--ink-600);
            max-width: 34em;
        }

        /* ============================================================
           TESTIMONIALS
           ============================================================ */
        .testi-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .testi-card {
            background: var(--basalt-800);
            border: 1px solid var(--line-dark);
            border-radius: var(--radius);
            padding: 2rem 1.8rem;
        }
        .testi-card i.fa-quote-left {
            color: var(--brass-500);
            font-size: 1.3rem;
            margin-bottom: 0.9rem;
            display: block;
        }
        .testi-card p {
            font-family: var(--serif);
            font-style: italic;
            font-size: 1.08rem;
            line-height: 1.55;
            margin-bottom: 1.4rem;
        }
        .testi-foot {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .testi-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            position: relative;
            overflow: hidden;
            flex-shrink: 0;
        }
        .testi-avatar .swatch-dark {
            position: absolute;
            inset: 0;
        }
        .testi-avatar span {
            position: relative;
            z-index: 1;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--fleck-50);
            background: rgba(22, 23, 26, 0.45);
        }
        .testi-name {
            font-size: 0.85rem;
            font-weight: 600;
        }
        .testi-role {
            font-size: 0.75rem;
            color: rgba(250, 247, 239, 0.5);
        }

        /* ============================================================
           FAQ
           ============================================================ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--line);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.3rem 0.2rem;
            font-family: var(--serif);
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            list-style: none;
            color: var(--ink-800);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-family: var(--sans);
            font-weight: 400;
            font-size: 1.5rem;
            color: var(--brass-500);
            transition: transform 0.25s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item p {
            padding: 0 0.2rem 1.4rem;
            color: var(--ink-600);
            font-size: 0.92rem;
            max-width: 44em;
        }

        /* ============================================================
           LEAD FORM
           ============================================================ */
        .lead-section {
            background: var(--basalt-900);
            color: var(--fleck-50);
            padding: 5.5rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .lead-section::before {
            content: '';
            position: absolute;
            inset: 0;
            opacity: 0.35;
        }
        .lead-section h2 {
            font-family: var(--serif);
            font-weight: 600;
            font-size: clamp(1.7rem, 2.6vw, 2.3rem);
            position: relative;
            z-index: 1;
        }
        .lead-section>p {
            color: rgba(250, 247, 239, 0.6);
            margin: 0.7rem 0 2.4rem;
            position: relative;
            z-index: 1;
        }
        .lead-form {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.9rem;
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 0 auto;
        }
        .lead-form input,
        .lead-form select {
            width: 100%;
            max-width: 260px;
            padding: 0.95em 1.1em;
            border-radius: var(--radius);
            border: 1px solid rgba(250, 247, 239, 0.25);
            background: rgba(250, 247, 239, 0.06);
            color: var(--fleck-50);
            font-family: var(--sans);
            font-size: 0.9rem;
        }
        .lead-form input::placeholder {
            color: rgba(250, 247, 239, 0.45);
        }
        .lead-form select {
            color: rgba(250, 247, 239, 0.75);
        }
        .lead-form select option {
            color: var(--ink-800);
        }
        .lead-form button {
            background: var(--brass-500);
            color: var(--basalt-900);
            font-weight: 700;
            font-size: 0.82rem;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            padding: 0.95em 2em;
            border-radius: var(--radius);
            transition: background 0.2s ease;
        }
        .lead-form button:hover {
            background: var(--brass-400);
        }
        .error-msg {
            display: block;
            color: #D98866;
            font-size: 0.75rem;
            margin-top: 0.35rem;
            text-align: left;
        }

        /* ============================================================
           FINAL CTA
           ============================================================ */
        .final-cta {
            background: var(--basalt-900);
            color: var(--fleck-50);
            padding: 5rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .final-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            opacity: 0.35;
        }
        .final-cta h2 {
            font-family: var(--serif);
            font-weight: 600;
            font-size: clamp(1.7rem, 2.6vw, 2.3rem);
            position: relative;
            z-index: 1;
        }
        .final-cta>p {
            color: rgba(250, 247, 239, 0.6);
            margin: 0.7rem 0 2.4rem;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .final-cta .btn-group {
            justify-content: center;
            position: relative;
            z-index: 1;
        }
        .final-cta .btn-primary {
            background: var(--brass-500);
            color: var(--basalt-900);
        }
        .final-cta .btn-primary:hover {
            background: var(--brass-400);
        }
        .final-cta .btn-outline {
            border-color: var(--fleck-50);
            color: var(--fleck-50);
        }
        .final-cta .btn-outline:hover {
            background: var(--fleck-50);
            color: var(--basalt-900);
        }

        /* ============================================================
           FOOTER
           ============================================================ */
        footer {
            background: var(--basalt-900);
            color: rgba(250, 247, 239, 0.7);
            padding: 4rem 2.5rem 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 2.5rem;
            max-width: 1400px;
            margin: 0 auto 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid var(--line-dark);
        }
        footer h4 {
            font-family: var(--serif);
            color: var(--fleck-50);
            font-weight: 600;
            margin-bottom: 1rem;
            font-size: 1.02rem;
        }
        footer p {
            font-size: 0.85rem;
            margin-bottom: 0.5rem;
            line-height: 1.7;
        }
        .social-links {
            display: flex;
            gap: 0.8rem;
            margin-top: 1rem;
        }
        .social-links a {
            width: 34px;
            height: 34px;
            border: 1px solid var(--line-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
        }
        .social-links a:hover {
            background: var(--brass-500);
            border-color: var(--brass-500);
            color: var(--basalt-900);
        }
        .footer-bottom {
            text-align: center;
            font-size: 0.75rem;
            color: rgba(250, 247, 239, 0.4);
            max-width: 1400px;
            margin: 0 auto;
        }

        /* ============================================================
           STICKY / FLOAT
           ============================================================ */
        .sticky-cta {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 300;
            background: var(--basalt-900);
            border-top: 1px solid var(--line-dark);
        }
        .sticky-btn {
            flex: 1;
            text-align: center;
            padding: 1em;
            font-weight: 700;
            font-size: 0.82rem;
            letter-spacing: 0.04em;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5em;
        }
        .sticky-btn.call {
            color: var(--fleck-50);
        }
        .sticky-btn.lead {
            background: var(--brass-500);
            color: var(--basalt-900);
        }
        .float-icons {
            position: fixed;
            right: 1.4rem;
            bottom: 5.5rem;
            z-index: 300;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--basalt-900);
            color: var(--fleck-50);
            box-shadow: 0 10px 25px -8px rgba(22, 23, 26, 0.4);
            font-size: 1.1rem;
            transition: transform 0.2s ease;
        }
        .float-btn:hover {
            transform: scale(1.08);
        }
        .float-btn.zalo {
            background: var(--brass-500);
            color: var(--basalt-900);
        }

        /* ============================================================
           MODAL
           ============================================================ */
        .modal {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 400;
            background: rgba(22, 23, 26, 0.6);
            backdrop-filter: blur(3px);
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
        }
        .modal-content {
            background: var(--fleck-50);
            max-width: 420px;
            width: 100%;
            padding: 2.2rem;
            border-radius: var(--radius);
            position: relative;
        }
        .modal-content h3 {
            font-family: var(--serif);
            font-weight: 600;
            font-size: 1.3rem;
            margin-bottom: 0.6rem;
        }
        .modal-content p {
            font-size: 0.9rem;
            color: var(--ink-600);
            margin-bottom: 1.2rem;
        }
        .modal-content input {
            width: 100%;
            padding: 0.9em 1em;
            margin-bottom: 0.9rem;
            border-radius: var(--radius);
            border: 1px solid var(--line);
            font-family: var(--sans);
        }
        .modal-content button {
            width: 100%;
            background: var(--basalt-900);
            color: var(--fleck-50);
            font-weight: 700;
            padding: 0.9em;
            border-radius: var(--radius);
            letter-spacing: 0.06em;
            font-size: 0.82rem;
            text-transform: uppercase;
            transition: background 0.2s ease;
        }
        .modal-content button:hover {
            background: var(--brass-500);
        }
        .modal-close {
            position: absolute;
            top: 1.2rem;
            right: 1.4rem;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--ink-400);
            line-height: 1;
        }

        /* ============================================================
           RESPONSIVE
           ============================================================ */
        @media (max-width: 980px) {
            .hero {
                grid-template-columns: 1fr;
                padding-top: 2.5rem;
            }
            .hero-visual {
                order: -1;
                max-width: 360px;
                margin: 0 auto;
            }
            .decision-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .unique-section {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .unique-section .section-header {
                text-align: center;
            }
            .unique-section .section-header .eyebrow {
                justify-content: center;
            }
            .customizer-grid {
                grid-template-columns: 1fr;
            }
            .trust-stack-inner {
                grid-template-columns: 1fr 1fr;
            }
            .projects-grid,
            .product-grid,
            .testi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 680px) {
            header {
                padding: 1rem 1.3rem;
            }
            .header-actions {
                display: none;
            }
            .mobile-only {
                display: block;
            }
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--stone-50);
                flex-direction: column;
                padding: 1.5rem;
                gap: 1.1rem;
                border-bottom: 1px solid var(--line);
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                opacity: 0;
            }
            .nav-links.active {
                transform: translateY(0);
                opacity: 1;
            }
            .section {
                padding: 3.5rem 1.3rem;
            }
            .hero {
                padding: 2rem 1.3rem 3rem;
            }
            .decision-strip {
                padding: 2rem 1.3rem;
                grid-template-columns: 1fr 1fr;
            }
            .unique-section {
                padding: 3.5rem 1.3rem;
            }
            .unique-visual {
                grid-template-columns: 1fr;
            }
            .unique-visual img:first-child {
                grid-column: 1;
                aspect-ratio: 1/1;
            }
            .customizer-section {
                padding: 3.5rem 1.3rem;
            }
            .trust-stack {
                padding: 2.5rem 1.3rem;
            }
            .trust-stack-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .projects-grid,
            .product-grid,
            .testi-grid {
                grid-template-columns: 1fr;
            }
            .lead-section {
                padding: 3.5rem 1.3rem;
            }
            .sticky-cta {
                display: flex;
            }
            .float-icons {
                bottom: 5.2rem;
                right: 1rem;
            }
            .page-btn {
                min-width: 36px;
                height: 36px;
                font-size: 0.75rem;
                padding: 0 0.5rem;
            }
            .pagination-info {
                font-size: 0.7rem;
            }
        }

/* ============================================================
   BLOG SECTION — PILLAR CONTENT
   ============================================================ */
.blog-section {
    background: var(--stone-50);
    padding: 5.5rem 2.5rem 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.8rem;
}

.blog-card {
    background: var(--fleck-50);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--line);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    text-decoration: none;
    color: inherit;
    display: block;
    position: relative;
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 25px 50px -20px rgba(22, 23, 26, 0.25);
}

.blog-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--basalt-800);
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.blog-card:hover .blog-image img {
    transform: scale(1.05);
}

.blog-badge {
    position: absolute;
    top: 0.8rem;
    left: 0.8rem;
    background: var(--brass-500);
    color: var(--basalt-900);
    font-size: 0.55rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.3rem 0.6rem;
    border-radius: var(--radius);
    z-index: 2;
}

.blog-icon {
    position: absolute;
    bottom: 0.8rem;
    right: 0.8rem;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(22, 23, 26, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brass-400);
    font-size: 0.9rem;
    z-index: 2;
    border: 1px solid rgba(250, 247, 239, 0.1);
}

.blog-content {
    padding: 1.4rem 1.5rem 1.6rem;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.72rem;
    color: var(--ink-400);
    margin-bottom: 0.5rem;
    font-weight: 500;
    letter-spacing: 0.04em;
}

.blog-cat {
    color: var(--brass-500);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
}

.blog-readtime i {
    margin-right: 0.2rem;
}

.blog-title {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 1.1rem;
    line-height: 1.3;
    color: var(--ink-800);
    margin-bottom: 0.5rem;
    transition: color 0.2s ease;
}

.blog-card:hover .blog-title {
    color: var(--brass-500);
}

.blog-excerpt {
    font-size: 0.85rem;
    color: var(--ink-400);
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0.8rem;
    border-top: 1px solid var(--line);
}

.blog-tag {
    font-size: 0.7rem;
    color: var(--ink-400);
    font-weight: 500;
    letter-spacing: 0.04em;
}

.blog-arrow {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--brass-500);
    transition: transform 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.blog-card:hover .blog-arrow {
    transform: translateX(4px);
}

/* Blog CTA */
.blog-cta {
    text-align: center;
    margin-top: 3.5rem;
    padding: 2.5rem;
    background: var(--stone-100);
    border-radius: var(--radius);
    border: 1px solid var(--line);
}

.blog-cta p {
    font-family: var(--serif);
    font-size: 1.15rem;
    color: var(--ink-800);
    margin-bottom: 1.2rem;
    font-weight: 500;
}

.blog-cta .btn-primary {
    display: inline-block;
}

/* ============================================================
   RESPONSIVE BLOG
   ============================================================ */
@media (max-width: 980px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 680px) {
    .blog-section {
        padding: 3.5rem 1.3rem;
    }
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    .blog-title {
        font-size: 1rem;
    }
    .blog-excerpt {
        -webkit-line-clamp: 2;
    }
    .blog-cta {
        padding: 1.8rem 1.2rem;
        margin-top: 2.5rem;
    }
    .blog-cta p {
        font-size: 1rem;
    }
}