/* roulang page: index */
:root {
            --primary: #0f3a2b;
            --primary-dark: #09251b;
            --primary-light: #1a5a42;
            --accent: #c9a227;
            --accent-hover: #b89118;
            --bg: #faf7f2;
            --bg-alt: #f3eee5;
            --surface: #ffffff;
            --text: #1c1c1c;
            --text-muted: #68736d;
            --text-light: #9aa39d;
            --border: #e4ded2;
            --border-light: #ede7db;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.07);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font-sans: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
            --container-max: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover, a:focus {
            color: var(--accent-hover);
            outline: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 0.5em;
            color: var(--text);
        }

        h1 {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            letter-spacing: -0.01em;
        }
        h2 {
            font-size: clamp(1.4rem, 3vw, 2rem);
            letter-spacing: -0.005em;
        }
        h3 {
            font-size: clamp(1.1rem, 2.2vw, 1.35rem);
        }
        h4 {
            font-size: 1.05rem;
        }

        p {
            margin: 0 0 1rem;
        }

        ul, ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ Header / Nav ============ */
        .site-header {
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 24px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .brand:hover, .brand:focus {
            color: var(--primary);
        }
        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            position: relative;
            padding: 6px 2px;
            transition: color var(--transition);
        }
        .nav-links a:hover,
        .nav-links a:focus {
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            border: 1px solid var(--primary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover, .nav-cta:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            flex-direction: column;
            gap: 5px;
            align-items: center;
        }
        .mobile-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .mobile-menu-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ============ Buttons ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 26px;
            border-radius: 999px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover, .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(15,58,43,0.25);
        }
        .btn-accent {
            background: var(--accent);
            color: #1c1c1c;
            border-color: var(--accent);
        }
        .btn-accent:hover, .btn-accent:focus {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: #1c1c1c;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(201,162,39,0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover, .btn-outline:focus {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-light:hover, .btn-light:focus {
            background: #f0ebe0;
            border-color: #f0ebe0;
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        /* ============ Tags / Badges ============ */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            line-height: 1.4;
            letter-spacing: 0.02em;
        }
        .tag-primary {
            background: rgba(15,58,43,0.1);
            color: var(--primary);
        }
        .tag-accent {
            background: rgba(201,162,39,0.15);
            color: #8a6d15;
        }
        .tag-light {
            background: rgba(255,255,255,0.2);
            color: #fff;
            backdrop-filter: blur(4px);
        }
        .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #4caf50;
            display: inline-block;
            flex-shrink: 0;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* ============ Section base ============ */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--primary-dark);
            color: #fff;
        }
        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }
        .section-head {
            margin-bottom: 44px;
        }
        .section-head .tag {
            margin-bottom: 14px;
        }
        .section-head h2 {
            margin-bottom: 12px;
        }
        .section-head .desc {
            color: var(--text-muted);
            max-width: 720px;
            font-size: 1.02rem;
            margin-bottom: 0;
        }
        .section-head.center {
            text-align: center;
        }
        .section-head.center .desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ Hero ============ */
        .hero {
            position: relative;
            background-image: linear-gradient(135deg, rgba(9,37,27,0.92) 0%, rgba(15,58,43,0.78) 55%, rgba(201,162,39,0.45) 100%), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 88px 0 80px;
            overflow: hidden;
        }
        .hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--accent) 0%, transparent 70%);
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content .tag {
            margin-bottom: 18px;
        }
        .hero-content h1 {
            color: #fff;
            font-size: clamp(1.8rem, 4.5vw, 2.75rem);
            line-height: 1.25;
            margin-bottom: 18px;
        }
        .hero-desc {
            color: rgba(255,255,255,0.88);
            font-size: 1.05rem;
            line-height: 1.85;
            margin-bottom: 28px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .hero-stats {
            display: flex;
            gap: 24px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stat strong {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.01em;
        }
        .hero-stat span {
            font-size: 0.82rem;
            color: rgba(255,255,255,0.7);
        }
        .live-card {
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.25);
        }
        .live-card .live-label {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .live-card h3 {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .live-card .live-topic {
            color: rgba(255,255,255,0.75);
            font-size: 0.92rem;
            margin-bottom: 20px;
        }
        .countdown {
            display: flex;
            gap: 12px;
            margin-bottom: 22px;
        }
        .countdown-item {
            flex: 1;
            background: rgba(255,255,255,0.1);
            border-radius: var(--radius-sm);
            padding: 12px 8px;
            text-align: center;
            min-width: 0;
        }
        .countdown-item strong {
            display: block;
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .countdown-item span {
            font-size: 0.72rem;
            color: rgba(255,255,255,0.65);
        }
        .live-subscribe {
            display: flex;
            gap: 10px;
        }
        .live-subscribe input {
            flex: 1;
            background: rgba(255,255,255,0.15);
            border: 1px solid rgba(255,255,255,0.3);
            border-radius: 999px;
            padding: 12px 18px;
            color: #fff;
            font-size: 0.9rem;
            min-width: 0;
        }
        .live-subscribe input::placeholder {
            color: rgba(255,255,255,0.5);
        }
        .live-subscribe input:focus {
            background: rgba(255,255,255,0.2);
            border-color: var(--accent);
            outline: none;
        }

        /* ============ Metrics dashboard ============ */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(201,162,39,0.4);
        }
        .metric-card strong {
            display: block;
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            margin-bottom: 6px;
            line-height: 1.2;
        }
        .metric-card span {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* ============ Series nav ============ */
        .series-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .series-item {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 16px;
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
            display: block;
            color: var(--text);
        }
        .series-item:hover, .series-item:focus {
            border-color: var(--accent);
            color: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .series-icon {
            font-size: 1.6rem;
            margin-bottom: 10px;
            display: block;
        }
        .series-item span.name {
            font-weight: 600;
            font-size: 0.95rem;
            display: block;
        }
        .series-item small {
            font-size: 0.78rem;
            color: var(--text-light);
            display: block;
            margin-top: 4px;
        }

        /* ============ Hot posts ============ */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .content-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(201,162,39,0.4);
        }
        .content-card .card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--bg-alt);
        }
        .content-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .content-card:hover .card-img img {
            transform: scale(1.06);
        }
        .content-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-body h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            line-height: 1.45;
        }
        .content-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }

        /* ============ Service matrix ============ */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .service-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            transition: all var(--transition);
        }
        .service-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .service-card .icon-box {
            width: 48px;
            height: 48px;
            background: rgba(15,58,43,0.08);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .service-card h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .service-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ============ Comparison ============ */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            max-width: 900px;
            margin: 0 auto;
        }
        .comparison-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 30px 26px;
            position: relative;
            transition: all var(--transition);
        }
        .comparison-card:hover {
            box-shadow: var(--shadow-md);
        }
        .comparison-card.traditional {
            border-top: 4px solid #bbb;
        }
        .comparison-card.forum {
            border-top: 4px solid var(--accent);
        }
        .comparison-card h3 {
            font-size: 1.1rem;
            margin-bottom: 18px;
        }
        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .comparison-card ul li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border-light);
            font-size: 0.92rem;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-muted);
        }
        .comparison-card ul li:last-child {
            border-bottom: none;
        }
        .comparison-card ul li::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--border);
            margin-top: 9px;
            flex-shrink: 0;
        }
        .comparison-card.forum ul li::before {
            background: var(--accent);
        }
        .comparison-card .vs-badge {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 52px;
            height: 52px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 6px 20px rgba(15,58,43,0.3);
            z-index: 2;
            display: none;
        }

        /* ============ News / Info ============ */
        .info-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 32px;
        }
        .news-list {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 24px;
        }
        .news-list h3 {
            font-size: 1.05rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-light);
        }
        .news-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border-light);
            transition: all var(--transition);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item a {
            color: var(--text);
            font-size: 0.93rem;
            font-weight: 500;
            flex: 1;
            transition: color var(--transition);
        }
        .news-item a:hover, .news-item a:focus {
            color: var(--primary);
        }
        .news-item .date {
            font-size: 0.78rem;
            color: var(--text-light);
            white-space: nowrap;
        }
        .side-recommend {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .recommend-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            gap: 0;
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .recommend-card .rc-img {
            width: 120px;
            min-height: 100%;
            flex-shrink: 0;
        }
        .recommend-card .rc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .recommend-card .rc-body {
            padding: 14px 16px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .recommend-card .rc-body h4 {
            font-size: 0.92rem;
            margin-bottom: 6px;
        }
        .recommend-card .rc-body p {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ============ FAQ ============ */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover, .faq-question:focus {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ============ CTA / Member ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #155a3e 60%, rgba(201,162,39,0.55) 100%);
            color: #fff;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -60%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(201,162,39,0.12);
            pointer-events: none;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .cta-content h2 {
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-content p {
            color: rgba(255,255,255,0.8);
            font-size: 1rem;
            margin-bottom: 24px;
        }
        .cta-perks {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }
        .cta-perks span {
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.22);
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 500;
        }
        .cta-form-box {
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.2);
        }
        .cta-form-box h3 {
            color: #fff;
            margin-bottom: 10px;
            font-size: 1.2rem;
        }
        .cta-form-box .form-hint {
            color: rgba(255,255,255,0.65);
            font-size: 0.85rem;
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 14px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.25);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            color: #fff;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255,255,255,0.45);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            background: rgba(255,255,255,0.18);
            border-color: var(--accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(201,162,39,0.2);
        }
        .form-group select {
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='white' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
        }
        .form-group select option {
            color: #1c1c1c;
            background: #fff;
        }
        .form-success {
            display: none;
            background: rgba(76,175,80,0.2);
            border: 1px solid rgba(76,175,80,0.4);
            color: #c8e6c9;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            margin-top: 14px;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #0c1f18;
            color: rgba(255,255,255,0.7);
            padding: 48px 0 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 1.15rem;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            max-width: 280px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 14px;
            font-weight: 600;
        }
        .footer-col a {
            color: rgba(255,255,255,0.6);
            font-size: 0.85rem;
            display: block;
            padding: 5px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover, .footer-col a:focus {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-desc {
                max-width: 100%;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .series-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .header-inner {
                min-height: 60px;
            }
            .hero {
                padding: 60px 0 56px;
            }
            .countdown {
                gap: 8px;
            }
            .countdown-item strong {
                font-size: 1.2rem;
            }
            .info-layout {
                grid-template-columns: 1fr;
            }
            .cta-grid {
                grid-template-columns: 1fr;
            }
            .cta-form-box {
                padding: 24px 20px;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .nav-links {
                gap: 18px;
            }
            .series-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero {
                padding: 48px 0 44px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat strong {
                font-size: 1.1rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-card strong {
                font-size: 1.5rem;
            }
            .series-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .nav-cta {
                padding: 8px 14px;
                font-size: 0.78rem;
            }
            .brand {
                font-size: 1.05rem;
            }
            .brand-mark {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .nav-links {
                gap: 12px;
                font-size: 0.85rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.88rem;
            }
            .live-card {
                padding: 24px 18px;
            }
            .section-head h2 {
                font-size: 1.35rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }