/* roulang page: index */
:root {
            --green-primary: #0B8A3F;
            --green-dark: #06853A;
            --green-light: #4AB560;
            --green-bg: #F0F4F1;
            --white-off: #F5F7F5;
            --white-pure: #FFFFFF;
            --black-data: #1A1E1B;
            --gray-text: #5F6B62;
            --gray-line: #E0E5E0;
            --gray-light: #F9FAF9;
            --red-error: #FCE4E4;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-light: 0 4px 14px rgba(0, 0, 0, 0.03);
            --shadow-hover: 0 12px 28px rgba(0, 0, 0, 0.06);
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --font-h1: 3.5rem;
            --font-h2: 2.625rem;
            --font-h3: 1.5rem;
            --font-body: 1rem;
            --font-sm: 0.875rem;
            --transition-base: 0.3s ease;
            --transition-fast: 0.2s ease;
            --container-max: 1280px;
            --section-gap: 120px;
            --section-gap-mobile: 80px;
            --nav-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--white-off);
            color: var(--black-data);
            line-height: 1.7;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            outline: none;
            transition: all var(--transition-base);
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: transparent;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 40px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            :root {
                --font-h1: 2rem;
                --font-h2: 1.75rem;
                --font-h3: 1.25rem;
                --section-gap: 80px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            :root {
                --font-h1: 2.75rem;
                --font-h2: 2.25rem;
                --font-h3: 1.35rem;
                --section-gap: 100px;
            }
        }

        /* ========== NAVIGATION ========== */
        .nav-bar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            background: transparent;
            transition: background var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base);
        }
        .nav-bar.scrolled {
            background: rgba(245, 247, 245, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 40px;
        }
        .nav-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--black-data);
            white-space: nowrap;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--green-primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
            list-style: none;
        }
        .nav-links a {
            font-size: var(--font-sm);
            font-weight: 600;
            color: var(--black-data);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--green-primary);
            transition: width var(--transition-base);
            border-radius: 2px;
        }
        .nav-links a:hover {
            color: var(--green-primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-cta {
            flex-shrink: 0;
            background: var(--green-primary);
            color: #fff;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: var(--font-sm);
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: all var(--transition-base);
            box-shadow: 0 2px 8px rgba(11, 138, 63, 0.25);
        }
        .nav-cta:hover {
            background: var(--green-dark);
            transform: scale(1.03);
            box-shadow: 0 4px 16px rgba(11, 138, 63, 0.35);
        }
        .nav-cta-desktop {
            display: inline-block;
        }
        .burger-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 1001;
            padding: 8px;
            width: 40px;
            height: 32px;
            justify-content: center;
            align-items: center;
        }
        .burger-btn span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--black-data);
            border-radius: 2px;
            transition: all var(--transition-base);
            transform-origin: center;
        }
        .burger-btn.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .burger-btn.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .burger-btn.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(26, 30, 27, 0.96);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-base);
        }
        .mobile-menu.active {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu a {
            font-size: 1.5rem;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.04em;
            transition: color var(--transition-fast);
        }
        .mobile-menu a:hover {
            color: var(--green-light);
        }
        .mobile-menu .nav-cta {
            font-size: 1.1rem;
            padding: 14px 32px;
            margin-top: 8px;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .burger-btn {
                display: flex;
            }
            .mobile-menu {
                display: flex;
            }
            .nav-inner {
                padding: 0 20px;
            }
            .nav-logo {
                font-size: 1rem;
            }
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background-color: var(--white-pure);
            background-image: repeating-linear-gradient(135deg,
                    rgba(11, 138, 63, 0.025) 0px,
                    rgba(11, 138, 63, 0.025) 2px,
                    transparent 2px,
                    transparent 16px);
            overflow: hidden;
            padding-top: var(--nav-height);
        }
        .hero .container {
            display: flex;
            align-items: center;
            gap: 48px;
            width: 100%;
            position: relative;
            z-index: 2;
        }
        .hero-text {
            flex: 0 0 58%;
            max-width: 58%;
        }
        .hero-h1 {
            font-size: var(--font-h1);
            font-weight: 700;
            line-height: 1.15;
            color: var(--black-data);
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }
        .hero-h1 .highlight {
            color: var(--green-primary);
            position: relative;
        }
        .hero-sub {
            font-size: 1.15rem;
            color: var(--gray-text);
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 500px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-block;
            background: var(--green-primary);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(11, 138, 63, 0.3);
            animation: pulse-glow 2.5s ease-in-out infinite;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--green-dark);
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 28px rgba(11, 138, 63, 0.4);
        }
        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 4px 16px rgba(11, 138, 63, 0.3);
            }
            50% {
                box-shadow: 0 4px 28px rgba(11, 138, 63, 0.55), 0 0 0 8px rgba(11, 138, 63, 0.06);
            }
        }
        .btn-ghost {
            display: inline-block;
            background: transparent;
            color: var(--green-primary);
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.03em;
            border: 2px solid var(--green-primary);
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-ghost:hover {
            background: rgba(11, 138, 63, 0.06);
            border-color: var(--green-dark);
            color: var(--green-dark);
            transform: translateY(-2px);
        }
        .hero-visual {
            flex: 0 0 38%;
            max-width: 38%;
            height: 420px;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .data-ring {
            position: absolute;
            border-radius: 50%;
            border: 2px solid rgba(11, 138, 63, 0.2);
            animation: ring-pulse 3s ease-in-out infinite;
        }
        .data-ring:nth-child(1) {
            width: 280px;
            height: 280px;
            animation-delay: 0s;
        }
        .data-ring:nth-child(2) {
            width: 200px;
            height: 200px;
            animation-delay: 0.5s;
        }
        .data-ring:nth-child(3) {
            width: 130px;
            height: 130px;
            animation-delay: 1s;
            border-color: rgba(74, 181, 96, 0.4);
        }
        @keyframes ring-pulse {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.7;
            }
            50% {
                transform: scale(1.06);
                opacity: 1;
            }
        }
        .crosshair-h {
            position: absolute;
            width: 260px;
            height: 1px;
            background: rgba(11, 138, 63, 0.3);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .crosshair-v {
            position: absolute;
            width: 1px;
            height: 260px;
            background: rgba(11, 138, 63, 0.3);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .data-dot {
            position: absolute;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--green-primary);
            animation: dot-blink 1.8s ease-in-out infinite;
        }
        .data-dot:nth-child(6) {
            top: 22%;
            left: 28%;
            animation-delay: 0s;
        }
        .data-dot:nth-child(7) {
            top: 58%;
            left: 68%;
            animation-delay: 0.6s;
            width: 6px;
            height: 6px;
        }
        .data-dot:nth-child(8) {
            top: 35%;
            left: 62%;
            animation-delay: 1.2s;
            width: 10px;
            height: 10px;
            background: var(--green-light);
        }
        .data-dot:nth-child(9) {
            top: 70%;
            left: 25%;
            animation-delay: 0.9s;
            width: 5px;
            height: 5px;
        }
        @keyframes dot-blink {
            0%,
            100% {
                opacity: 0.5;
                transform: scale(1);
            }
            50% {
                opacity: 1;
                transform: scale(1.8);
            }
        }
        .hero-metrics {
            position: absolute;
            bottom: -28px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 20px;
            z-index: 5;
            flex-wrap: wrap;
            justify-content: center;
        }
        .metric-card {
            background: var(--white-pure);
            border-radius: var(--radius-md);
            padding: 18px 24px;
            text-align: center;
            box-shadow: var(--shadow-light);
            min-width: 140px;
            border: 1px solid var(--gray-line);
            transition: all var(--transition-base);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--green-light);
        }
        .metric-num {
            font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
            font-size: 1.8rem;
            font-weight: 600;
            color: var(--green-primary);
            letter-spacing: -0.02em;
        }
        .metric-label {
            font-size: var(--font-sm);
            color: var(--gray-text);
            margin-top: 4px;
            letter-spacing: 0.03em;
        }

        @media (max-width: 768px) {
            .hero .container {
                flex-direction: column;
                gap: 32px;
                text-align: center;
            }
            .hero-text {
                flex: 1 1 auto;
                max-width: 100%;
            }
            .hero-sub {
                max-width: 100%;
                margin: 0 auto 24px;
            }
            .hero-btns {
                justify-content: center;
            }
            .hero-visual {
                flex: 0 0 auto;
                max-width: 100%;
                height: 260px;
                width: 100%;
            }
            .data-ring:nth-child(1) {
                width: 200px;
                height: 200px;
            }
            .data-ring:nth-child(2) {
                width: 140px;
                height: 140px;
            }
            .data-ring:nth-child(3) {
                width: 90px;
                height: 90px;
            }
            .crosshair-h,
            .crosshair-v {
                width: 180px;
                height: 180px;
            }
            .hero-metrics {
                position: relative;
                bottom: auto;
                left: auto;
                transform: none;
                margin-top: 20px;
                gap: 12px;
            }
            .metric-card {
                min-width: 100px;
                padding: 14px 16px;
            }
            .metric-num {
                font-size: 1.4rem;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .hero .container {
                gap: 32px;
            }
            .hero-text {
                flex: 0 0 55%;
                max-width: 55%;
            }
            .hero-visual {
                flex: 0 0 40%;
                max-width: 40%;
                height: 340px;
            }
            .data-ring:nth-child(1) {
                width: 230px;
                height: 230px;
            }
            .data-ring:nth-child(2) {
                width: 160px;
                height: 160px;
            }
            .data-ring:nth-child(3) {
                width: 105px;
                height: 105px;
            }
        }

        /* ========== SECTIONS COMMON ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-label {
            display: inline-block;
            font-size: var(--font-sm);
            font-weight: 600;
            color: var(--green-primary);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-h2 {
            font-size: var(--font-h2);
            font-weight: 600;
            line-height: 1.25;
            color: var(--black-data);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .section-h3 {
            font-size: var(--font-h3);
            font-weight: 400;
            color: var(--gray-text);
            line-height: 1.4;
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-h3 {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-h3 {
                margin-bottom: 28px;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ========== SERVICES ========== */
        #services {
            background: var(--white-off);
            padding-top: 80px;
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            align-items: start;
        }
        .service-card {
            background: var(--gray-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }
        .service-card:nth-child(2),
        .service-card:nth-child(4) {
            margin-top: 36px;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--green-light);
            background: var(--white-pure);
        }
        .service-card:hover::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--green-primary);
            border-radius: 0 0 3px 3px;
        }
        .service-icon {
            width: 48px;
            height: 48px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: rgba(11, 138, 63, 0.08);
            transition: background var(--transition-base);
        }
        .service-card:hover .service-icon {
            background: rgba(11, 138, 63, 0.15);
        }
        .service-icon svg {
            width: 24px;
            height: 24px;
            stroke: var(--green-primary);
            fill: none;
            stroke-width: 1.5;
        }
        .service-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--black-data);
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }
        .service-desc {
            font-size: var(--font-sm);
            color: var(--gray-text);
            line-height: 1.6;
        }
        .service-card-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: 6px;
            margin-bottom: 14px;
            background: #e8ece9;
        }

        @media (max-width: 768px) {
            .services-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .service-card:nth-child(2),
            .service-card:nth-child(4) {
                margin-top: 0;
            }
            .service-card:nth-child(odd) {
                margin-top: 0;
            }
            .service-card:nth-child(even) {
                margin-top: 0;
            }
        }
        @media (max-width: 520px) {
            .services-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .service-card:nth-child(2),
            .service-card:nth-child(4) {
                margin-top: 0;
            }
            .service-card:nth-child(3) {
                margin-top: 28px;
            }
            .service-card:nth-child(4) {
                margin-top: 28px;
            }
        }

        /* ========== DASHBOARD ========== */
        #dashboard {
            background: var(--green-bg);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        #dashboard::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(240, 244, 241, 0.85);
            z-index: 1;
        }
        #dashboard .container {
            position: relative;
            z-index: 2;
        }
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .dash-card {
            background: var(--white-pure);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-light);
            border: 1px solid var(--gray-line);
            transition: all var(--transition-base);
            position: relative;
        }
        .dash-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--green-light);
        }
        .dash-card:hover .dash-highlight {
            box-shadow: 0 0 0 6px rgba(11, 138, 63, 0.08);
            border-color: var(--green-primary);
        }
        .dash-card-label {
            font-size: var(--font-sm);
            color: var(--gray-text);
            letter-spacing: 0.04em;
            font-weight: 500;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .dash-highlight {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            background: var(--gray-light);
            border: 1px solid transparent;
            transition: all var(--transition-base);
            margin-bottom: 16px;
        }
        .dash-value {
            font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
            font-size: 1.6rem;
            font-weight: 600;
            color: var(--green-primary);
            letter-spacing: -0.01em;
        }
        .dash-sub {
            font-size: var(--font-sm);
            color: var(--gray-text);
        }
        .progress-bar-wrap {
            background: #e8ece9;
            border-radius: 10px;
            height: 6px;
            width: 100%;
            margin: 10px 0 6px;
            overflow: hidden;
        }
        .progress-bar-fill {
            height: 100%;
            border-radius: 10px;
            background: linear-gradient(90deg, var(--green-primary), var(--green-light));
            transition: width 1.6s ease;
            width: 0;
        }
        .progress-bar-fill.animated {
            width: var(--target-width);
        }
        .ring-chart-wrap {
            display: flex;
            align-items: center;
            gap: 16px;
            margin: 8px 0;
        }
        .ring-chart-wrap svg {
            flex-shrink: 0;
        }
        .ring-chart-wrap svg circle.progress-ring {
            transition: stroke-dashoffset 1.6s ease;
        }
        .dash-mini-label {
            font-size: var(--font-sm);
            color: var(--gray-text);
            line-height: 1.5;
        }
        .dash-grid-bg {
            position: absolute;
            inset: 0;
            pointer-events: none;
            opacity: 0.03;
            background-image:
                linear-gradient(rgba(11, 138, 63, 0.4) 1px, transparent 1px),
                linear-gradient(90deg, rgba(11, 138, 63, 0.4) 1px, transparent 1px);
            background-size: 28px 28px;
            border-radius: var(--radius-lg);
        }

        @media (max-width: 768px) {
            .dashboard-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .dash-card {
                padding: 20px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .dash-card:last-child {
                grid-column: 1 / -1;
            }
        }

        /* ========== COMPARE ========== */
        #compare {
            background: var(--white-pure);
        }
        .compare-wrapper {
            display: flex;
            align-items: stretch;
            gap: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-light);
            border: 1px solid var(--gray-line);
        }
        .compare-col {
            flex: 1;
            padding: 36px 32px;
            transition: all var(--transition-base);
        }
        .compare-col.traditional {
            background: #f7f8f7;
            opacity: 0.78;
        }
        .compare-col.green {
            background: #f9fdfa;
            border-left: 3px solid var(--green-primary);
            position: relative;
            z-index: 1;
            box-shadow: -4px 0 20px rgba(11, 138, 63, 0.06);
        }
        .compare-col h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .compare-col.traditional h3 {
            color: #8a8f8b;
        }
        .compare-col.green h3 {
            color: var(--green-primary);
        }
        .compare-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            line-height: 1.5;
            color: var(--black-data);
        }
        .compare-list li .cmp-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            margin-top: 2px;
        }
        .compare-col.traditional .cmp-icon {
            color: #c0c5c1;
        }
        .compare-col.green .cmp-icon {
            color: var(--green-primary);
        }
        .vs-badge {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            width: 56px;
            background: var(--white-pure);
            position: relative;
            z-index: 3;
            font-weight: 800;
            font-size: 0.9rem;
            color: var(--green-primary);
            letter-spacing: 0.06em;
            border-left: 1px solid var(--gray-line);
            border-right: 1px solid var(--gray-line);
            writing-mode: vertical-lr;
            text-orientation: mixed;
        }

        @media (max-width: 768px) {
            .compare-wrapper {
                flex-direction: column;
                border-radius: var(--radius-md);
            }
            .vs-badge {
                writing-mode: horizontal-tb;
                width: 100%;
                height: 44px;
                border-left: none;
                border-right: none;
                border-top: 1px solid var(--gray-line);
                border-bottom: 1px solid var(--gray-line);
                font-size: 0.85rem;
            }
            .compare-col {
                padding: 24px 20px;
            }
            .compare-col.green {
                border-left: none;
                border-top: 3px solid var(--green-primary);
            }
        }

        /* ========== FAQ ========== */
        #faq {
            background: var(--white-off);
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--white-pure);
            border-radius: var(--radius-md);
            border: 1px solid var(--gray-line);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: #d0d8d2;
        }
        .faq-question {
            width: 100%;
            background: none;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--black-data);
            text-align: left;
            cursor: pointer;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--green-primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--green-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-base);
            color: var(--green-primary);
            font-size: 1.2rem;
            font-weight: 700;
            line-height: 1;
        }
        .faq-item.open .faq-icon {
            background: var(--green-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
            font-size: 0.95rem;
            color: var(--gray-text);
            line-height: 1.7;
            border-left: 2px solid transparent;
            margin-left: 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
            border-left-color: var(--green-primary);
        }
        .faq-dot {
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: #e0e5e0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 8px;
            transition: background var(--transition-base);
        }
        .faq-item.open .faq-dot {
            background: var(--green-primary);
        }
        .faq-dot svg {
            width: 10px;
            height: 10px;
            fill: #fff;
        }

        /* ========== CONTACT ========== */
        #contact {
            background: var(--white-pure);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: soft-light;
            position: relative;
        }
        #contact::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, 0.9);
            z-index: 1;
        }
        #contact .container {
            position: relative;
            z-index: 2;
        }
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            max-width: 960px;
            margin: 0 auto;
        }
        .contact-info h2 {
            font-size: var(--font-h2);
            font-weight: 600;
            color: var(--black-data);
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .contact-info p {
            color: var(--gray-text);
            font-size: 1.05rem;
            line-height: 1.6;
        }
        .contact-form {
            background: var(--white-pure);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-light);
            border: 1px solid var(--gray-line);
            position: relative;
            overflow: hidden;
        }
        .contact-form::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: repeating-linear-gradient(135deg,
                    rgba(11, 138, 63, 0.015) 0px,
                    rgba(11, 138, 63, 0.015) 3px,
                    transparent 3px,
                    transparent 20px);
            pointer-events: none;
            z-index: 0;
        }
        .contact-form>* {
            position: relative;
            z-index: 1;
        }
        .form-group {
            margin-bottom: 18px;
            position: relative;
        }
        .form-input {
            width: 100%;
            padding: 12px 0;
            font-size: 0.95rem;
            color: var(--black-data);
            border-bottom: 2px solid var(--gray-line);
            transition: border-color var(--transition-base);
            background: transparent;
            position: relative;
            letter-spacing: 0.02em;
        }
        .form-input::placeholder {
            color: #b0b8b2;
        }
        .form-input:focus {
            border-bottom-color: var(--green-primary);
        }
        .form-underline {
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--green-primary);
            transition: all var(--transition-base);
            transform: translateX(-50%);
            pointer-events: none;
        }
        .form-input:focus~.form-underline {
            width: 100%;
        }
        .form-select {
            width: 100%;
            padding: 12px 0;
            font-size: 0.95rem;
            color: var(--black-data);
            border-bottom: 2px solid var(--gray-line);
            background: transparent;
            appearance: none;
            -webkit-appearance: none;
            cursor: pointer;
            letter-spacing: 0.02em;
            transition: border-color var(--transition-base);
        }
        .form-select:focus {
            border-bottom-color: var(--green-primary);
        }
        .select-arrow {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            pointer-events: none;
            color: var(--gray-text);
            font-size: 0.7rem;
        }
        .btn-submit {
            width: 100%;
            background: var(--green-primary);
            color: #fff;
            padding: 14px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.04em;
            margin-top: 8px;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(11, 138, 63, 0.25);
            animation: pulse-glow 2.8s ease-in-out infinite;
            cursor: pointer;
        }
        .btn-submit:hover {
            background: var(--green-dark);
            box-shadow: 0 8px 28px rgba(11, 138, 63, 0.4);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .contact-info {
                text-align: center;
            }
            .contact-form {
                padding: 24px 18px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #111613;
            color: #c5cac7;
            padding: 36px 0;
            text-align: center;
            border-top: 1px solid #2a302c;
        }
        .footer-logo {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            margin-bottom: 8px;
        }
        .footer-logo span {
            color: var(--green-light);
        }
        .footer-domain {
            font-size: var(--font-sm);
            color: #7d847f;
            margin-bottom: 4px;
        }
        .footer-social {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin: 12px 0;
            list-style: none;
        }
        .footer-social li {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #1e2420;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition-fast);
            cursor: default;
        }
        .footer-social li:hover {
            background: #2a332d;
        }
        .footer-social svg {
            width: 16px;
            height: 16px;
            fill: #7d847f;
        }
        .footer-copy {
            font-size: 0.8rem;
            color: #5d6560;
            margin-top: 8px;
        }

        /* ========== FADE-IN ANIMATION ========== */
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== MISC ========== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }