/* roulang page: index */
:root {
            --bg-deep: #0A0E17;
            --bg-card: #131A24;
            --bg-input: #1A1F2B;
            --gold-dark: #B8860B;
            --gold-bright: #D4AF37;
            --text-primary: #E0E0E0;
            --text-secondary: #8899AA;
            --text-muted: #6B7A8D;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-gold-subtle: rgba(212, 175, 55, 0.15);
            --border-gold-visible: rgba(212, 175, 55, 0.6);
            --shadow-gold: rgba(212, 175, 55, 0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-pill: 30px;
            --radius-xl: 28px;
            --font-h1: 2.25rem;
            --font-h2: 1.75rem;
            --font-h3: 1.25rem;
            --font-body: 1rem;
            --font-sm: 0.875rem;
            --font-xs: 0.75rem;
            --font-metric: 2.5rem;
            --font-metric-lg: 3rem;
            --line-height-body: 1.8;
            --line-height-heading: 1.3;
            --spacing-section-desktop: 120px;
            --spacing-section-tablet: 80px;
            --spacing-section-mobile: 60px;
            --container-max: 1280px;
            --container-padding-desktop: 20px;
            --container-padding-mobile: 16px;
            --nav-height: 68px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.45s ease;
        }

        *,
        *::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', 'Segoe UI', sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: var(--line-height-body);
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-tap-highlight-color: transparent;
        }

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

        a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition-fast), text-shadow var(--transition-fast);
        }

        a:hover {
            color: var(--gold-bright);
            text-shadow: 0 0 8px rgba(212, 175, 55, 0.3);
        }

        a:focus-visible {
            outline: 2px solid var(--gold-bright);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            color: inherit;
            font-size: inherit;
            transition: all var(--transition-smooth);
        }

        button:focus-visible {
            outline: 2px solid var(--gold-bright);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input,
        textarea {
            font-family: inherit;
            color: var(--text-primary);
            background: var(--bg-input);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: var(--font-body);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
            outline: none;
        }

        input:focus,
        textarea:focus {
            border-color: var(--gold-dark);
            box-shadow: 0 0 0 3px rgba(184, 134, 11, 0.1);
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }

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

        @media (max-width: 768px) {
            .container {
                padding-left: var(--container-padding-mobile);
                padding-right: var(--container-padding-mobile);
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(212, 175, 55, 0.25);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-padding-desktop);
            height: 100%;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            flex: 1;
        }

        .nav-left {
            justify-content: flex-end;
        }

        .nav-right {
            justify-content: flex-start;
        }

        .nav-logo {
            flex-shrink: 0;
            padding: 0 20px;
            text-align: center;
        }

        .nav-logo a {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--gold-bright);
            letter-spacing: 0.06em;
            white-space: nowrap;
            text-shadow: 0 0 12px rgba(212, 175, 55, 0.35);
            transition: text-shadow var(--transition-fast);
            display: block;
        }

        .nav-logo a:hover {
            text-shadow: 0 0 22px rgba(212, 175, 55, 0.6);
            color: var(--gold-bright);
        }

        .nav-link {
            font-size: var(--font-sm);
            color: #AAA;
            letter-spacing: 0.03em;
            white-space: nowrap;
            padding: 6px 0;
            position: relative;
            transition: color var(--transition-fast);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 1.5px;
            background: var(--gold-bright);
            transition: width var(--transition-smooth);
            border-radius: 1px;
        }

        .nav-link:hover {
            color: var(--gold-bright);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--gold-bright);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            background: none;
            border: none;
            width: 40px;
            height: 32px;
            justify-content: center;
            align-items: center;
        }

        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--gold-bright);
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                gap: 18px;
            }
            .nav-logo {
                padding: 0 10px;
            }
            .nav-logo a {
                font-size: 1.05rem;
            }
            .nav-link {
                font-size: 0.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-container {
                justify-content: space-between;
                padding: 0 16px;
            }
            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
                padding: 0;
            }
            .nav-logo a {
                font-size: 1rem;
            }
            .nav-mobile-overlay {
                display: none;
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(10, 14, 23, 0.96);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                z-index: 999;
                flex-direction: column;
                align-items: center;
                padding-top: 40px;
                gap: 20px;
            }
            .nav-mobile-overlay.open {
                display: flex;
            }
            .nav-mobile-overlay .nav-link {
                font-size: 1.1rem;
                padding: 12px 0;
                color: #BBB;
            }
            .nav-mobile-overlay .nav-link:hover {
                color: var(--gold-bright);
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: var(--nav-height);
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 23, 0.65) 0%, rgba(10, 14, 23, 0.82) 60%, rgba(10, 14, 23, 0.95) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 20px;
            max-width: 800px;
            width: 100%;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(212, 175, 55, 0.18);
            border: 1px solid rgba(212, 175, 55, 0.5);
            color: var(--gold-bright);
            padding: 8px 20px;
            border-radius: var(--radius-pill);
            font-size: var(--font-sm);
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 20px;
            animation: pulse-badge 2.5s ease-in-out infinite;
            text-shadow: 0 0 8px rgba(212, 175, 55, 0.4);
        }

        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.35);
            }
            50% {
                box-shadow: 0 0 0 16px rgba(212, 175, 55, 0);
            }
        }

        .hero-corner-sticker {
            position: absolute;
            top: 30px;
            right: 30px;
            z-index: 3;
            background: var(--gold-bright);
            color: #0A0E17;
            font-weight: 800;
            font-size: 0.85rem;
            padding: 10px 15px;
            border-radius: 6px;
            transform: rotate(8deg);
            box-shadow: 0 6px 24px rgba(212, 175, 55, 0.45);
            letter-spacing: 0.04em;
            animation: sticker-float 3s ease-in-out infinite;
        }

        @keyframes sticker-float {
            0%,
            100% {
                transform: rotate(8deg) translateY(0);
            }
            50% {
                transform: rotate(8deg) translateY(-8px);
            }
        }

        @media (max-width: 768px) {
            .hero-corner-sticker {
                top: 16px;
                right: 12px;
                font-size: 0.7rem;
                padding: 7px 11px;
                transform: rotate(5deg);
            }
            @keyframes sticker-float {
                0%,
                100% {
                    transform: rotate(5deg) translateY(0);
                }
                50% {
                    transform: rotate(5deg) translateY(-5px);
                }
            }
        }

        .hero-title {
            font-size: var(--font-h1);
            font-weight: 700;
            color: var(--gold-bright);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
            text-shadow: 0 0 30px rgba(212, 175, 55, 0.3);
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: #C8C8C8;
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 30px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: var(--font-body);
            letter-spacing: 0.04em;
            transition: all var(--transition-smooth);
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: transparent;
            border: 1.5px solid var(--gold-bright);
            color: var(--gold-bright);
            box-shadow: 0 0 0 0 rgba(212, 175, 55, 0);
        }

        .btn-primary:hover {
            background: var(--gold-bright);
            color: #0A0E17;
            box-shadow: 0 0 28px rgba(212, 175, 55, 0.55);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: scale(0.97);
            box-shadow: 0 0 14px rgba(212, 175, 55, 0.3);
            transition: transform 0.1s ease;
        }

        .btn-secondary {
            background: rgba(212, 175, 55, 0.1);
            border: 1.5px solid rgba(212, 175, 55, 0.4);
            color: var(--text-primary);
        }

        .btn-secondary:hover {
            background: rgba(212, 175, 55, 0.22);
            border-color: var(--gold-bright);
            box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: scale(0.97);
            transition: transform 0.1s ease;
        }

        .hero-metrics {
            display: flex;
            gap: 32px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-metric-item {
            text-align: center;
            min-width: 90px;
        }

        .hero-metric-value {
            font-size: var(--font-metric);
            font-weight: 700;
            color: var(--gold-bright);
            text-shadow: 0 0 18px rgba(212, 175, 55, 0.45);
            line-height: 1;
            display: block;
        }

        .hero-metric-label {
            font-size: var(--font-xs);
            color: var(--text-secondary);
            margin-top: 6px;
            letter-spacing: 0.04em;
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 62vh;
            }
            .hero-title {
                font-size: 1.55rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-metric-value {
                font-size: 1.8rem;
            }
            .hero-metrics {
                gap: 18px;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--spacing-section-desktop) 0;
        }

        @media (max-width: 1024px) {
            .section {
                padding: var(--spacing-section-tablet) 0;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-label {
            display: inline-block;
            font-size: var(--font-xs);
            color: var(--gold-dark);
            letter-spacing: 0.1em;
            text-transform: uppercase;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .section-title {
            font-size: var(--font-h2);
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: var(--font-body);
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== FLASH DEAL TRACK ========== */
        .flash-track-section {
            position: relative;
            overflow: hidden;
        }

        .flash-track-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding: 10px 0 20px;
            scrollbar-width: thin;
            scrollbar-color: rgba(212, 175, 55, 0.3) transparent;
            cursor: grab;
        }

        .flash-track-scroll::-webkit-scrollbar {
            height: 5px;
        }

        .flash-track-scroll::-webkit-scrollbar-track {
            background: transparent;
        }

        .flash-track-scroll::-webkit-scrollbar-thumb {
            background: rgba(212, 175, 55, 0.35);
            border-radius: 10px;
        }

        .flash-card {
            flex: 0 0 280px;
            scroll-snap-align: start;
            background: rgba(19, 26, 36, 0.85);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--border-gold-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            flex-shrink: 0;
            cursor: pointer;
        }

        .flash-card:hover {
            border-color: var(--border-gold-visible);
            box-shadow: 0 0 22px var(--shadow-gold);
            transform: translateY(-4px);
        }

        .flash-card-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            display: block;
        }

        .flash-card-body {
            padding: 18px;
        }

        .flash-card-tag {
            display: inline-block;
            background: rgba(212, 175, 55, 0.2);
            color: var(--gold-bright);
            font-size: var(--font-xs);
            padding: 4px 10px;
            border-radius: 20px;
            margin-bottom: 8px;
            letter-spacing: 0.04em;
        }

        .flash-card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .flash-card-desc {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .flash-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: var(--font-xs);
            color: var(--text-muted);
        }

        .flash-card-heat {
            color: var(--gold-bright);
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .flash-card {
                flex: 0 0 240px;
            }
            .flash-card-img {
                height: 140px;
            }
        }

        /* ========== STOCK ALERT BAR ========== */
        .stock-alert-bar {
            background: linear-gradient(135deg, rgba(184, 134, 11, 0.12) 0%, rgba(212, 175, 55, 0.05) 100%);
            border: 1px solid rgba(212, 175, 55, 0.25);
            border-radius: var(--radius-md);
            padding: 18px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin: 0 auto;
            max-width: var(--container-max);
        }

        .stock-alert-text {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 500;
            font-size: var(--font-body);
        }

        .stock-alert-icon {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--gold-bright);
            box-shadow: 0 0 10px rgba(212, 175, 55, 0.7);
            animation: blink-dot 1.5s ease-in-out infinite;
            flex-shrink: 0;
        }

        @keyframes blink-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        .stock-alert-count {
            color: var(--gold-bright);
            font-weight: 700;
            font-size: 1.3rem;
        }

        .stock-alert-cta {
            color: var(--gold-bright);
            font-weight: 600;
            font-size: var(--font-sm);
            letter-spacing: 0.05em;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .stock-alert-cta:hover {
            color: #FFF;
            text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
        }

        @media (max-width: 768px) {
            .stock-alert-bar {
                padding: 14px 18px;
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
        }

        /* ========== FOCUS TOPICS GRID ========== */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .topic-card {
            background: rgba(19, 26, 36, 0.8);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--border-gold-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
            text-align: center;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .topic-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--gold-dark), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .topic-card:hover {
            border-color: var(--border-gold-visible);
            box-shadow: 0 0 24px var(--shadow-gold);
            transform: translateY(-3px);
        }

        .topic-card:hover::before {
            opacity: 1;
        }

        .topic-card-icon {
            font-size: 2.5rem;
            margin-bottom: 14px;
            display: block;
            color: var(--gold-bright);
        }

        .topic-card-title {
            font-size: var(--font-h3);
            font-weight: 500;
            color: var(--gold-bright);
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }

        .topic-card-desc {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .topics-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .topic-card {
                padding: 22px 18px;
            }
        }

        /* ========== INFO SECTION (左列表+右推荐) ========== */
        .info-layout {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 36px;
            align-items: start;
        }

        .info-list {
            list-style: none;
        }

        .info-list-item {
            padding: 16px 0;
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .info-list-item:hover {
            background: rgba(212, 175, 55, 0.04);
            padding-left: 8px;
            border-radius: 6px;
        }

        .info-list-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--gold-dark);
            flex-shrink: 0;
            margin-top: 7px;
        }

        .info-list-content h4 {
            font-size: var(--font-body);
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .info-list-content span {
            font-size: var(--font-xs);
            color: var(--text-muted);
        }

        .info-side-card {
            background: rgba(19, 26, 36, 0.8);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--border-gold-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            position: sticky;
            top: calc(var(--nav-height) + 30px);
        }

        .info-side-card h3 {
            font-size: 1.1rem;
            color: var(--gold-bright);
            margin-bottom: 16px;
            font-weight: 600;
        }

        .info-side-list {
            list-style: none;
        }

        .info-side-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
            font-size: var(--font-sm);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .info-side-list li:hover {
            color: var(--gold-bright);
            padding-left: 6px;
        }

        .info-side-rank {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.2);
            color: var(--gold-bright);
            font-size: var(--font-xs);
            font-weight: 700;
            flex-shrink: 0;
        }

        .info-side-list li:nth-child(1) .info-side-rank {
            background: var(--gold-bright);
            color: #0A0E17;
        }

        @media (max-width: 768px) {
            .info-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .info-side-card {
                position: static;
            }
        }

        /* ========== COMPARISON SECTION ========== */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }

        .comparison-col {
            padding: 40px 32px;
            position: relative;
        }

        .comparison-col.weak {
            background: rgba(30, 35, 45, 0.6);
            border-right: 1px solid var(--border-subtle);
        }

        .comparison-col.strong {
            background: rgba(19, 26, 36, 0.85);
            border-left: 2px solid rgba(212, 175, 55, 0.5);
            box-shadow: inset 0 0 40px rgba(212, 175, 55, 0.04);
        }

        .comparison-col h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 24px;
            text-align: center;
            letter-spacing: 0.04em;
        }

        .comparison-col.weak h3 {
            color: #8899AA;
        }

        .comparison-col.strong h3 {
            color: var(--gold-bright);
            text-shadow: 0 0 14px rgba(212, 175, 55, 0.3);
        }

        .comparison-list {
            list-style: none;
        }

        .comparison-list li {
            padding: 12px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: var(--font-body);
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }

        .comparison-col.weak .comparison-list li {
            color: #8899AA;
        }

        .comparison-col.strong .comparison-list li {
            color: #D0D0D0;
        }

        .comparison-icon {
            flex-shrink: 0;
            font-size: 1.1rem;
        }

        .comparison-col.weak .comparison-icon {
            color: #6B7A8D;
        }

        .comparison-col.strong .comparison-icon {
            color: var(--gold-bright);
        }

        @media (max-width: 768px) {
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .comparison-col.weak {
                border-right: none;
                border-bottom: 1px solid var(--border-subtle);
            }
            .comparison-col.strong {
                border-left: none;
                border-top: 2px solid rgba(212, 175, 55, 0.5);
            }
            .comparison-col {
                padding: 28px 20px;
            }
        }

        /* ========== RANKING TABLE ========== */
        .ranking-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .ranking-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .ranking-table th {
            text-align: left;
            padding: 14px 16px;
            font-size: var(--font-sm);
            color: var(--text-muted);
            font-weight: 500;
            border-bottom: 2px solid rgba(212, 175, 55, 0.3);
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .ranking-table td {
            padding: 14px 16px;
            font-size: var(--font-body);
            color: var(--text-primary);
            border-bottom: 1px solid var(--border-subtle);
            white-space: nowrap;
        }

        .ranking-table tbody tr {
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .ranking-table tbody tr:hover {
            background: rgba(212, 175, 55, 0.06);
        }

        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            font-weight: 700;
            font-size: var(--font-sm);
        }

        .rank-badge.top {
            background: var(--gold-bright);
            color: #0A0E17;
            box-shadow: 0 0 12px rgba(212, 175, 55, 0.4);
        }

        .rank-badge.normal {
            background: rgba(212, 175, 55, 0.15);
            color: var(--gold-bright);
        }

        .trend-up {
            color: #4CAF50;
            font-weight: 600;
        }

        .trend-hot {
            color: #FF6B6B;
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .ranking-table {
                min-width: 480px;
            }
            .ranking-table th,
            .ranking-table td {
                padding: 10px 10px;
                font-size: 0.8rem;
            }
        }

        /* ========== CTA BUTTON GROUP ========== */
        .cta-button-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            letter-spacing: 0.05em;
        }

        .btn-glow {
            background: transparent;
            border: 2px solid var(--gold-bright);
            color: var(--gold-bright);
            animation: glow-pulse 2.5s ease-in-out infinite;
        }

        @keyframes glow-pulse {
            0%,
            100% {
                box-shadow: 0 0 8px rgba(212, 175, 55, 0.25);
            }
            50% {
                box-shadow: 0 0 30px rgba(212, 175, 55, 0.55);
            }
        }

        .btn-glow:hover {
            background: var(--gold-bright);
            color: #0A0E17;
            box-shadow: 0 0 40px rgba(212, 175, 55, 0.7);
            animation: none;
            transform: translateY(-3px);
        }

        .btn-glow:active {
            transform: scale(0.96);
            transition: transform 0.1s ease;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: rgba(19, 26, 36, 0.7);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: rgba(212, 175, 55, 0.3);
            background: rgba(19, 26, 36, 0.9);
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            cursor: pointer;
            font-size: var(--font-body);
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            border: none;
            text-align: left;
            letter-spacing: 0.03em;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--gold-bright);
        }

        .faq-q-badge {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.2);
            color: var(--gold-bright);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: var(--font-sm);
        }

        .faq-toggle-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--gold-dark);
            transition: transform var(--transition-smooth);
            font-weight: 300;
        }

        .faq-item.open .faq-toggle-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 20px;
        }

        .faq-answer-inner {
            display: flex;
            gap: 10px;
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: var(--font-body);
        }

        .faq-a-badge {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(184, 134, 11, 0.15);
            color: var(--gold-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: var(--font-sm);
        }

        @media (max-width: 768px) {
            .faq-question {
                padding: 15px 16px;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                font-size: 0.85rem;
            }
        }

        /* ========== FORM SECTION ========== */
        .form-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .form-overlay {
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 23, 0.88);
            z-index: 1;
        }

        .form-container {
            position: relative;
            z-index: 2;
            max-width: 560px;
            margin: 0 auto;
            background: rgba(19, 26, 36, 0.85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-gold-subtle);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            text-align: center;
        }

        .form-container h3 {
            font-size: 1.3rem;
            color: var(--gold-bright);
            margin-bottom: 8px;
            font-weight: 600;
        }

        .form-container .form-hint {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.6;
        }

        .form-row {
            display: flex;
            gap: 12px;
            margin-bottom: 16px;
        }

        .form-row input {
            flex: 1;
        }

        .form-row .btn-send-code {
            flex-shrink: 0;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--gold-dark);
            background: rgba(212, 175, 55, 0.08);
            color: var(--gold-bright);
            font-size: var(--font-sm);
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .form-row .btn-send-code:hover {
            background: rgba(212, 175, 55, 0.2);
            border-color: var(--gold-bright);
        }

        .form-row .btn-send-code:active {
            transform: scale(0.96);
        }

        .btn-submit {
            width: 100%;
            padding: 15px;
            border-radius: var(--radius-pill);
            border: 2px solid var(--gold-bright);
            background: transparent;
            color: var(--gold-bright);
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.06em;
            cursor: pointer;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .btn-submit:hover {
            background: var(--gold-bright);
            color: #0A0E17;
            box-shadow: 0 0 35px rgba(212, 175, 55, 0.6);
            transform: translateY(-2px);
        }

        .btn-submit:active {
            transform: scale(0.96);
            transition: transform 0.1s ease;
        }

        .btn-submit.loading {
            pointer-events: none;
            opacity: 0.7;
        }

        .btn-submit .spinner-ring {
            display: none;
            width: 20px;
            height: 20px;
            border: 2px solid transparent;
            border-top-color: var(--gold-bright);
            border-radius: 50%;
            animation: spin 0.7s linear infinite;
            margin-right: 8px;
        }

        .btn-submit.loading .spinner-ring {
            display: inline-block;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        .toast {
            position: fixed;
            top: 30px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--gold-dark);
            color: #0A0E17;
            padding: 14px 28px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            z-index: 9999;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease, transform 0.35s ease;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
        }

        .toast.show {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

        @media (max-width: 768px) {
            .form-container {
                padding: 28px 20px;
            }
            .form-row {
                flex-direction: column;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A0E17;
            border-top: 1px solid rgba(212, 175, 55, 0.3);
            padding: 50px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 36px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            font-size: 1rem;
            color: var(--gold-bright);
            margin-bottom: 16px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--gold-bright);
            padding-left: 4px;
        }

        .footer-col p {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: var(--font-xs);
            color: var(--text-muted);
        }

        .footer-bottom strong {
            color: var(--gold-dark);
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 36px 0 20px;
            }
        }

        /* ========== UTILITY ========== */
        .text-gold {
            color: var(--gold-bright);
        }
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .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;
            }
        }