/* roulang page: index */
:root {
            --c-bg: #0B1220;
            --c-bg-2: #111B2E;
            --c-bg-footer: #080E1A;
            --c-primary: #2D7FF9;
            --c-primary-2: #00C6FF;
            --c-glow: #00E5FF;
            --c-warm: #FFC24B;
            --c-success: #34D399;
            --c-text: #F2F6FC;
            --c-text-2: #A7B4C9;
            --c-text-3: #6C7A92;
            --c-border: rgba(255, 255, 255, 0.10);
            --c-border-hover: rgba(0, 229, 255, 0.45);
            --glass-bg: linear-gradient(135deg, rgba(255,255,255,0.10), rgba(255,255,255,0.03));
            --glass-border: rgba(255, 255, 255, 0.12);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 20px rgba(0, 229, 255, 0.4);
            --sp-section: 80px;
            --sp-section-mobile: 56px;
            --sp-card: 24px;
            --rd-card: 16px;
            --rd-btn: 999px;
            --rd-input: 10px;
            --fs-h1: 44px;
            --fs-h2: 28px;
            --fs-h3: 20px;
            --fs-body: 16px;
            --fs-small: 14px;
            --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--c-bg);
            color: var(--c-text);
            font-family: var(--font);
            font-size: var(--fs-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
        }

        .skip-link {
            position: absolute;
            left: -999px;
            top: 8px;
            z-index: 9999;
            background: var(--c-bg-2);
            color: #fff;
            padding: 10px 18px;
            border-radius: 8px;
            border: 1px solid var(--c-glow);
        }
        .skip-link:focus {
            left: 16px;
            color: #fff;
        }

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

        .section-pad {
            padding: var(--sp-section) 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 32px;
        }

        .section-title {
            font-size: var(--fs-h2);
            line-height: 1.3;
            font-weight: 700;
            margin: 0 0 8px;
            letter-spacing: 0.02em;
        }

        .section-desc {
            color: var(--c-text-2);
            font-size: 15px;
            margin: 0;
            max-width: 640px;
        }

        .text-link {
            color: var(--c-glow);
            font-size: 14px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .text-link:hover {
            color: var(--c-primary-2);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            background: rgba(0, 229, 255, 0.12);
            color: var(--c-glow);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 12px;
            line-height: 1.4;
            font-weight: 500;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            min-width: 160px;
            border-radius: 999px;
            padding: 0 28px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            text-decoration: none;
            cursor: pointer;
            transition: background 0.2s, box-shadow 0.3s, transform 0.2s, border-color 0.2s;
        }
        .btn:focus-visible {
            outline: 2px solid var(--c-glow);
            outline-offset: 3px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
            animation: glowPulse 2.4s ease-in-out infinite;
        }
        .btn-primary:hover {
            box-shadow: 0 0 34px rgba(0, 229, 255, 0.6);
            transform: translateY(-1px);
            filter: brightness(1.05);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--c-text);
        }
        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.06);
            border-color: var(--c-border-hover);
            color: #fff;
        }
        .btn-outline:active {
            transform: translateY(1px);
        }

        @keyframes glowPulse {
            0%, 100% {
                box-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 36px rgba(0, 229, 255, 0.6);
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 18, 32, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
        }
        .site-header.is-scrolled {
            background: rgba(8, 14, 26, 0.92);
            border-bottom-color: var(--c-border);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            gap: 20px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--c-text);
            white-space: nowrap;
        }
        .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            box-shadow: var(--shadow-glow);
            flex-shrink: 0;
        }
        .brand-icon svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .brand-sm {
            font-size: 13px;
            color: var(--c-text-3);
            margin-left: 2px;
            font-weight: 400;
        }

        .main-nav ul {
            display: flex;
            gap: 6px;
            list-style: none;
        }
        .main-nav a {
            display: inline-block;
            padding: 10px 14px;
            color: var(--c-text-2);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: color 0.2s;
        }
        .main-nav a::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 4px;
            height: 2px;
            background: linear-gradient(90deg, var(--c-primary), var(--c-primary-2));
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.2s;
        }
        .main-nav a:hover {
            color: var(--c-text);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }
        .main-nav a.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 38px;
            padding: 0 22px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.3);
            transition: box-shadow 0.3s, transform 0.2s;
        }
        .nav-cta:hover {
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.5);
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid var(--c-border);
            border-radius: 10px;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--c-text);
            border-radius: 2px;
            position: relative;
            transition: background 0.2s;
        }
        .nav-toggle span::before,
        .nav-toggle span::after {
            content: "";
            position: absolute;
            width: 20px;
            height: 2px;
            background: var(--c-text);
            border-radius: 2px;
            left: 0;
            transition: transform 0.2s;
        }
        .nav-toggle span::before {
            top: -6px;
        }
        .nav-toggle span::after {
            top: 6px;
        }
        .nav-toggle.open span {
            background: transparent;
        }
        .nav-toggle.open span::before {
            transform: rotate(45deg);
            top: 0;
        }
        .nav-toggle.open span::after {
            transform: rotate(-45deg);
            top: 0;
        }

        .hotbar {
            background: rgba(255, 255, 255, 0.04);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 8px 0;
        }
        .hotbar-inner {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--c-text-2);
        }
        .hotbar-inner .badge-warm {
            background: rgba(255, 194, 75, 0.14);
            color: var(--c-warm);
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            padding: 56px 0 88px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            opacity: 0.16;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background:
                radial-gradient(600px 400px at 72% 40%, rgba(0, 229, 255, 0.12), transparent 70%),
                linear-gradient(180deg, rgba(11, 18, 32, 0.8), var(--c-bg));
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 56px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-copy h1 {
            font-size: var(--fs-h1);
            line-height: 1.3;
            font-weight: 700;
            margin: 0 0 18px;
            letter-spacing: 0.01em;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: var(--c-text-2);
            max-width: 520px;
            margin: 0;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 32px;
        }
        .hero-card-wrap {
            display: flex;
            justify-content: center;
            position: relative;
        }
        .hero-card {
            width: 100%;
            max-width: 340px;
            aspect-ratio: 9 / 14;
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
        }
        .hero-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .hero-card-status {
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 16px;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: 999px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            font-size: 13px;
            color: #fff;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--c-glow);
            box-shadow: 0 0 10px var(--c-glow);
            flex-shrink: 0;
        }
        .hero-trust {
            margin-top: 28px;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 13px;
            color: var(--c-text-3);
        }
        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-trust svg {
            width: 16px;
            height: 16px;
            color: var(--c-success);
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--rd-card);
            padding: var(--sp-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: transform 0.2s, border-color 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-3px);
            border-color: var(--c-border-hover);
        }
        .stat-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--c-glow);
            font-feature-settings: "tnum";
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-label {
            color: var(--c-text-2);
            font-size: 14px;
        }

        /* Viral strip */
        .viral-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding: 4px 4px 12px;
            scrollbar-width: none;
        }
        .viral-scroll::-webkit-scrollbar {
            display: none;
        }
        .viral-card {
            flex: 0 0 180px;
            height: 260px;
            border-radius: 16px;
            overflow: hidden;
            position: relative;
            background: linear-gradient(135deg, rgba(45, 127, 249, 0.15), rgba(0, 229, 255, 0.06));
            border: 1px solid var(--glass-border);
            display: block;
            transition: transform 0.25s, border-color 0.25s;
        }
        .viral-card:hover {
            transform: translateY(-4px);
            border-color: var(--c-border-hover);
        }
        .viral-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .viral-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.55);
            color: var(--c-glow);
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 999px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            z-index: 2;
        }
        .viral-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent 60%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 14px;
        }
        .viral-title {
            color: #fff;
            font-size: 13px;
            line-height: 1.5;
            margin: 0;
        }
        .viral-icon {
            position: absolute;
            right: 12px;
            bottom: 12px;
            width: 18px;
            height: 18px;
            color: var(--c-glow);
        }

        /* Picklist */
        .picklist-section {
            background: var(--c-bg-2);
        }
        .picklist-grid {
            display: grid;
            grid-template-columns: 0.85fr 1.15fr;
            gap: 48px;
            align-items: center;
        }
        .pick-side h2 {
            margin: 0 0 12px;
        }
        .pick-side .section-desc {
            margin-bottom: 24px;
        }
        .pick-items {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .pick-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 14px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
            transition: background 0.2s;
        }
        .pick-item:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .pick-item:hover::before {
            content: "";
            position: absolute;
            left: 0;
            top: 20%;
            height: 60%;
            width: 2px;
            background: var(--c-glow);
            border-radius: 2px;
        }
        .pick-num {
            font-size: 20px;
            color: var(--c-primary-2);
            font-weight: 700;
            width: 40px;
            flex-shrink: 0;
            font-feature-settings: "tnum";
        }
        .pick-info {
            flex: 1;
            min-width: 0;
        }
        .pick-title {
            display: block;
            color: var(--c-text);
            font-size: 15px;
            font-weight: 600;
            transition: color 0.2s;
        }
        .pick-item:hover .pick-title {
            color: var(--c-glow);
        }
        .pick-desc {
            display: block;
            color: var(--c-text-2);
            font-size: 13px;
            margin-top: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .pick-extra {
            color: var(--c-text-3);
            font-size: 13px;
            flex-shrink: 0;
            font-feature-settings: "tnum";
        }

        /* Reviews */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .review-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--rd-card);
            padding: var(--sp-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: transform 0.2s, border-color 0.2s;
        }
        .review-card:hover {
            transform: translateY(-3px);
            border-color: var(--c-border-hover);
        }
        .stars {
            color: var(--c-warm);
            font-size: 14px;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }
        .review-text {
            font-size: 14px;
            line-height: 1.7;
            color: var(--c-text-2);
            margin: 0;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 16px;
            font-size: 13px;
            color: var(--c-text-3);
        }
        .avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            flex-shrink: 0;
        }

        /* CTA band */
        .cta-band {
            position: relative;
            border-radius: 24px;
            padding: 48px 56px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            border: 1px solid var(--glass-border);
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            box-shadow: var(--shadow-card);
        }
        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 14, 26, 0.92), rgba(8, 14, 26, 0.65));
            border-radius: 24px;
        }
        .cta-band > div {
            position: relative;
            z-index: 1;
        }
        .cta-band h2 {
            font-size: 26px;
            margin: 0 0 8px;
            color: #fff;
        }
        .cta-band p {
            color: var(--c-text-2);
            margin: 0;
            max-width: 560px;
        }
        .cta-band .btn {
            flex-shrink: 0;
        }
        .cta-points {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 14px;
        }
        .cta-points span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--c-text-2);
        }
        .cta-points svg {
            width: 16px;
            height: 16px;
            color: var(--c-success);
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        /* News */
        .news-section {
            background: var(--c-bg-2);
        }
        .news-grid {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--rd-card);
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: transform 0.2s, border-color 0.25s, box-shadow 0.25s;
        }
        .news-card:hover {
            transform: translateY(-3px);
            border-color: var(--c-border-hover);
            box-shadow: var(--shadow-card-hover);
        }
        .news-card a {
            display: block;
            padding: var(--sp-card);
            height: 100%;
        }
        .news-card__meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }
        .news-card time {
            font-size: 13px;
            color: var(--c-text-3);
            font-feature-settings: "tnum";
            white-space: nowrap;
        }
        .news-card__title {
            font-size: 16px;
            font-weight: 600;
            color: var(--c-text);
            margin: 0 0 10px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color 0.2s;
        }
        .news-card:hover .news-card__title {
            color: var(--c-glow);
        }
        .news-card__summary {
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.6;
            margin: 0 0 18px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card__arrow {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--c-primary-2);
            font-size: 14px;
            font-weight: 500;
            transition: transform 0.2s;
        }
        .news-card:hover .news-card__arrow {
            transform: translateX(4px);
        }
        .news-empty {
            grid-column: 1 / -1;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--rd-card);
            padding: 32px;
            text-align: center;
            color: var(--c-text-2);
            font-size: 15px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        /* FAQ */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .faq-item:first-child {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .faq-q {
            font-size: 16px;
            font-weight: 600;
            color: var(--c-text);
            cursor: pointer;
            padding: 18px 0;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }
        .faq-q::-webkit-details-marker {
            display: none;
        }
        .faq-q:hover {
            color: var(--c-glow);
        }
        .faq-icon {
            width: 18px;
            height: 18px;
            color: var(--c-glow);
            position: relative;
            flex-shrink: 0;
            transition: transform 0.2s;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: currentColor;
            border-radius: 2px;
            transition: transform 0.2s;
        }
        .faq-icon::before {
            width: 18px;
            height: 2px;
            top: 8px;
            left: 0;
        }
        .faq-icon::after {
            width: 2px;
            height: 18px;
            left: 8px;
            top: 0;
        }
        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
        }
        .faq-a {
            padding: 0 0 18px;
            color: var(--c-text-2);
            font-size: 14px;
            line-height: 1.8;
            max-width: 760px;
        }

        /* Final CTA */
        .final-cta {
            text-align: center;
            padding: 48px 24px;
            background: linear-gradient(135deg, rgba(45, 127, 249, 0.12), rgba(0, 229, 255, 0.06));
            border: 1px solid var(--glass-border);
            border-radius: var(--rd-card);
            position: relative;
            overflow: hidden;
        }
        .final-cta::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            opacity: 0.08;
        }
        .final-cta h2 {
            position: relative;
            font-size: 26px;
            margin: 0 0 10px;
        }
        .final-cta p {
            position: relative;
            color: var(--c-text-2);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .final-cta .btn {
            position: relative;
        }

        /* Footer */
        .site-footer {
            background: var(--c-bg-footer);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
            margin-top: var(--sp-section);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
        }
        .footer-brand .brand {
            margin-bottom: 14px;
        }
        .footer-desc {
            color: var(--c-text-2);
            font-size: 14px;
            line-height: 1.7;
            margin: 0 0 20px;
            max-width: 340px;
        }
        .social-links {
            display: flex;
            gap: 10px;
        }
        .social-links a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid var(--c-border);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--c-text-2);
            transition: border-color 0.2s, color 0.2s, background 0.2s;
        }
        .social-links a:hover {
            border-color: var(--c-glow);
            color: var(--c-glow);
            background: rgba(0, 229, 255, 0.06);
        }
        .social-links svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--c-text);
            margin: 0 0 18px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--c-text-2);
            transition: color 0.2s;
            position: relative;
        }
        .footer-links a:hover {
            color: #fff;
            text-decoration: underline;
            text-decoration-color: var(--c-glow);
            text-underline-offset: 4px;
        }
        .footer-contact {
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 2;
        }
        .footer-contact a {
            color: var(--c-primary-2);
        }
        .footer-contact a:hover {
            text-decoration: underline;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 48px;
            padding: 20px 0;
            font-size: 13px;
            color: var(--c-text-3);
        }
        .back-top {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 36px;
            padding: 0 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--c-text-2);
            font-size: 13px;
            transition: background 0.2s, color 0.2s;
        }
        .back-top:hover {
            background: rgba(0, 229, 255, 0.12);
            color: var(--c-glow);
        }

        /* Responsive */
        @media (max-width: 1280px) {
            .container {
                max-width: 1140px;
            }
        }

        @media (max-width: 1024px) {
            :root {
                --fs-h1: 38px;
                --fs-h2: 26px;
                --sp-section: 64px;
            }
            .hero {
                min-height: auto;
                padding: 40px 0 64px;
            }
            .hero-grid {
                grid-template-columns: 1fr 0.8fr;
                gap: 32px;
            }
            .hero-card {
                max-width: 280px;
            }
            .stats-grid,
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .picklist-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --fs-h1: 32px;
                --fs-h2: 24px;
                --sp-section: 56px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .main-nav {
                position: fixed;
                top: 0;
                right: 0;
                bottom: 0;
                width: min(320px, 86%);
                background: rgba(8, 14, 26, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                transform: translateX(100%);
                transition: transform 0.3s;
                padding: 88px 24px 30px;
                z-index: 90;
                box-shadow: -16px 0 40px rgba(0, 0, 0, 0.4);
                overflow-y: auto;
            }
            .main-nav.open {
                transform: translateX(0);
            }
            .main-nav ul {
                flex-direction: column;
                gap: 6px;
            }
            .main-nav a {
                display: block;
                padding: 14px 16px;
                font-size: 17px;
                border-radius: 10px;
            }
            .main-nav a::after {
                display: none;
            }
            .main-nav a.active {
                background: rgba(0, 229, 255, 0.08);
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-cta {
                display: none;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-card {
                max-width: 260px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .stats-grid,
            .review-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .cta-band {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .cta-band .btn {
                width: 100%;
            }
            .cta-points {
                justify-content: center;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            .site-footer {
                margin-top: var(--sp-section);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            :root {
                --fs-h1: 30px;
                --fs-h2: 22px;
                --sp-section: 48px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand {
                font-size: 17px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
            }
            .brand-sm {
                display: none;
            }
            .hero-actions {
                margin-top: 24px;
            }
            .hero-card {
                max-width: 220px;
            }
            .hero-card-status {
                left: 12px;
                right: 12px;
                bottom: 12px;
                padding: 6px 12px;
                font-size: 12px;
            }
            .stat-num {
                font-size: 28px;
            }
            .cta-band {
                padding: 28px 18px;
            }
            .cta-band h2 {
                font-size: 22px;
            }
            .faq-q {
                font-size: 15px;
            }
            .news-card a {
                padding: 20px;
            }
            .pick-item {
                gap: 10px;
                padding: 16px 8px;
            }
            .pick-num {
                width: 32px;
                font-size: 18px;
            }
            .pick-extra {
                display: none;
            }
            .footer-grid {
                gap: 28px;
            }
        }

/* roulang page: article */
:root {
  --c-bg: #0B1220;
  --c-bg-2: #111B2E;
  --c-bg-footer: #080E1A;
  --c-primary: #2D7FF9;
  --c-primary-2: #00C6FF;
  --c-glow: #00E5FF;
  --c-warm: #FFC24B;
  --c-success: #34D399;
  --c-text: #F2F6FC;
  --c-text-2: #A7B4C9;
  --c-text-3: #6C7A92;
  --c-border: rgba(255,255,255,0.10);
  --c-border-hover: rgba(0,229,255,0.45);
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 16px;
  --sp-4: 24px;
  --sp-5: 32px;
  --sp-6: 48px;
  --sp-7: 64px;
  --sp-8: 80px;
  --rd-1: 8px;
  --rd-2: 12px;
  --rd-3: 16px;
  --rd-4: 20px;
  --rd-pill: 999px;
  --fs-1: 13px;
  --fs-2: 14px;
  --fs-3: 15px;
  --fs-4: 16px;
  --fs-5: 18px;
  --fs-6: 20px;
  --fs-7: 24px;
  --fs-8: 30px;
  --fs-9: 40px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-elevated: 0 8px 40px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 20px rgba(0,229,255,0.4), 0 0 60px rgba(0,229,255,0.15);
  --shadow-glow-hover: 0 0 30px rgba(0,229,255,0.6), 0 0 80px rgba(0,229,255,0.2);
  --glass-bg: linear-gradient(135deg, rgba(255,255,255,0.10), rgba(255,255,255,0.03));
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { color: var(--c-text); text-decoration: none; transition: color .2s, border-color .2s, background .2s, box-shadow .2s, transform .2s; }
a:hover { color: var(--c-glow); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--c-glow);
  outline-offset: 2px;
}
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 通用按钮 ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  min-width: 160px;
  padding: 0 28px;
  border: none;
  border-radius: var(--rd-pill);
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  box-shadow: var(--shadow-glow);
  transition: box-shadow .25s, filter .25s, transform .15s;
}
.btn-primary:hover {
  box-shadow: var(--shadow-glow-hover);
  filter: brightness(1.05);
  color: #fff;
}
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: .5; box-shadow: none; transform: none; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  min-width: 120px;
  padding: 0 24px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--rd-pill);
  background: transparent;
  color: var(--c-text-2);
  font-size: 14px;
  font-weight: 500;
}
.btn-outline:hover {
  border-color: var(--c-border-hover);
  background: rgba(0,229,255,0.06);
  color: #fff;
}

.text-link {
  color: var(--c-primary-2);
  font-size: 14px;
  font-weight: 500;
}
.text-link:hover { color: var(--c-primary); }

/* ---------- 导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,18,32,0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background .35s, border-color .35s, box-shadow .35s;
}
.site-header.scrolled {
  background: rgba(8,14,26,0.9);
  border-bottom-color: rgba(255,255,255,0.06);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--c-text);
  white-space: nowrap;
}
.brand:hover { color: var(--c-text); }
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(45,127,249,0.32), rgba(0,229,255,0.18));
  border: 1px solid rgba(0,229,255,0.28);
  color: var(--c-glow);
  flex-shrink: 0;
}
.brand-icon svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 6px;
}
.main-nav a {
  position: relative;
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text-2);
  border-radius: var(--rd-1);
  transition: color .25s;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-glow));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .25s ease;
}
.main-nav a:hover { color: var(--c-text); }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active { color: #fff; font-weight: 600; }
.main-nav a.active::after { transform: scaleX(1); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 22px;
  border-radius: var(--rd-pill);
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 0 12px rgba(0,229,255,0.25);
  transition: box-shadow .25s, filter .25s, transform .15s;
  white-space: nowrap;
}
.nav-cta:hover {
  box-shadow: var(--shadow-glow-hover);
  filter: brightness(1.05);
  color: #fff;
}
.nav-cta:active { transform: translateY(1px); }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--c-border);
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  align-items: center;
  justify-content: center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.nav-toggle span { position: relative; }
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: rotate(45deg); top: 0; }
.nav-toggle[aria-expanded="true"] span::after { transform: rotate(-45deg); top: 0; }

.hotbar {
  background: rgba(255,255,255,0.04);
  border-top: 1px solid rgba(255,255,255,0.04);
}
.hotbar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 36px;
  font-size: 13px;
  color: var(--c-text-2);
  overflow: hidden;
  white-space: nowrap;
}
.badge-warm {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--rd-pill);
  background: rgba(255,194,75,0.14);
  color: var(--c-warm);
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
}

/* ---------- 面包屑 ---------- */
.breadcrumb-nav { padding: 28px 0 4px; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-text-3);
  overflow: hidden;
}
.breadcrumb li { display: inline-flex; align-items: center; white-space: nowrap; }
.breadcrumb a { color: var(--c-text-2); }
.breadcrumb a:hover { color: var(--c-glow); }
.breadcrumb .current {
  color: var(--c-text-2);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 文章布局 ---------- */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  padding: 24px 0 64px;
}
.article-main-col { min-width: 0; }

.article-title {
  font-size: var(--fs-8);
  font-weight: 700;
  line-height: 1.3;
  margin: 8px 0 16px;
  letter-spacing: -0.01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--c-text-3);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 28px;
  font-feature-settings: "tnum";
}
.article-meta .meta-author { color: var(--c-text-2); }

/* ---------- 文章正文排版 ---------- */
.article-content {
  font-size: 17px;
  line-height: 1.85;
  color: #E6EDF7;
}
.article-content p { margin-bottom: 24px; }
.article-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin: 40px 0 16px;
  padding-left: 14px;
  border-left: 3px solid var(--c-glow);
  line-height: 1.45;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 12px;
  color: var(--c-text);
}
.article-content img {
  width: 100%;
  border-radius: var(--rd-2);
  object-fit: cover;
  margin: 28px 0;
}
.article-content blockquote {
  border-left: 3px solid var(--c-glow);
  background: rgba(255,255,255,0.04);
  padding: 16px 20px;
  border-radius: 0 var(--rd-2) var(--rd-2) 0;
  margin: 28px 0;
  color: var(--c-text-2);
}
.article-content blockquote p { margin: 0; }
.article-content ul,
.article-content ol {
  margin: 16px 0 24px;
  padding-left: 24px;
}
.article-content ul li { list-style: disc; margin-bottom: 8px; }
.article-content ul li::marker { color: var(--c-glow); }
.article-content ol li { list-style: decimal; margin-bottom: 8px; }
.article-content ol li::marker { color: var(--c-glow); font-weight: 600; }
.article-content code {
  background: #0E1626;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  padding: 2px 6px;
  color: var(--c-glow);
}
.article-content pre {
  background: #0E1626;
  border-radius: var(--rd-2);
  padding: 20px;
  overflow-x: auto;
  margin: 24px 0;
}
.article-content pre code {
  background: transparent;
  padding: 0;
  font-size: 14px;
  color: #A7B4C9;
}
.article-content a { color: var(--c-primary-2); }
.article-content a:hover { text-decoration: underline; }

/* ---------- 空状态 ---------- */
.article-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 80px 32px;
  border-radius: var(--rd-3);
  background: var(--glass-bg);
  border: 1px solid var(--c-border);
  backdrop-filter: blur(12px);
  text-align: center;
}
.article-empty .empty-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(0,229,255,0.1);
  border: 1px solid rgba(0,229,255,0.2);
  color: var(--c-glow);
  margin-bottom: 8px;
}
.article-empty .empty-icon svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.article-empty p { font-size: 15px; color: var(--c-text-2); }

.article-footer-actions {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--c-border);
  display: flex;
  justify-content: flex-start;
}

/* ---------- 侧栏 ---------- */
.article-aside { display: flex; flex-direction: column; gap: 24px; }

.sidebar-card {
  background: var(--glass-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--rd-3);
  backdrop-filter: blur(12px);
  padding: 24px;
  transition: border-color .25s, box-shadow .25s;
}
.sidebar-card:hover { border-color: rgba(0,229,255,0.2); }
.sidebar-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 14px;
  position: relative;
  padding-left: 12px;
}
.sidebar-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-primary), var(--c-glow));
}

.author-card { text-align: center; }
.author-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(45,127,249,0.4), rgba(0,229,255,0.2));
  border: 2px solid rgba(0,229,255,0.35);
  color: var(--c-glow);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.author-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.author-card p { font-size: 13px; color: var(--c-text-3); line-height: 1.7; margin-bottom: 12px; }
.author-card .text-link { font-size: 13px; }

.sidebar-posts li {
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.sidebar-posts li:first-child { padding-top: 0; }
.sidebar-posts li:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-posts a {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text-2);
  line-height: 1.5;
  transition: color .2s;
}
.sidebar-posts a:hover { color: var(--c-glow); }
.sidebar-posts .post-date {
  display: block;
  font-size: 12px;
  color: var(--c-text-3);
  margin-top: 4px;
  font-feature-settings: "tnum";
}

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--rd-pill);
  background: rgba(0,229,255,0.08);
  border: 1px solid rgba(0,229,255,0.14);
  color: var(--c-primary-2);
  font-size: 13px;
  font-weight: 400;
  transition: background .2s, border-color .2s, color .2s;
}
.tag:hover {
  background: rgba(0,229,255,0.16);
  border-color: rgba(0,229,255,0.35);
  color: var(--c-text);
}

/* ---------- 相关推荐 ---------- */
.related-section {
  padding: 64px 0;
  border-top: 1px solid rgba(255,255,255,0.04);
  background: var(--c-bg-2);
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--rd-3);
  background: var(--glass-bg);
  border: 1px solid var(--c-border);
  backdrop-filter: blur(12px);
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-border-hover);
  box-shadow: var(--shadow-elevated);
}
.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.related-body { padding: 20px; }
.related-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--c-text);
  transition: color .2s;
}
.related-card:hover h3 { color: var(--c-glow); }
.related-body p {
  font-size: 13px;
  color: var(--c-text-3);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 文章页 CTA ---------- */
.article-cta-section { padding: 32px 0 72px; }
.article-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 32px 36px;
  border-radius: var(--rd-3);
  background: linear-gradient(135deg, rgba(45,127,249,0.18), rgba(0,229,255,0.06));
  border: 1px solid rgba(0,229,255,0.2);
}
.cta-text strong {
  display: block;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}
.cta-text span {
  font-size: 14px;
  color: var(--c-text-2);
}
.article-cta .btn-primary { flex-shrink: 0; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--c-bg-footer);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .brand { margin-bottom: 14px; }
.footer-desc {
  font-size: 14px;
  color: var(--c-text-3);
  line-height: 1.7;
  margin-bottom: 18px;
  max-width: 280px;
}
.social-links { display: flex; gap: 10px; }
.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--c-text-2);
  transition: border-color .2s, color .2s, background .2s;
}
.social-links a:hover {
  border-color: var(--c-border-hover);
  color: var(--c-glow);
  background: rgba(0,229,255,0.08);
}
.social-links svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--c-text);
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 14px;
  color: var(--c-text-3);
  line-height: 1.5;
}
.footer-links a:hover {
  color: var(--c-text);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--c-primary-2);
}
.footer-contact-text {
  font-size: 14px;
  color: var(--c-text-3);
  line-height: 1.7;
}
.footer-contact-text li { margin-bottom: 8px; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-bottom p {
  font-size: 13px;
  color: var(--c-text-3);
  font-feature-settings: "tnum";
}
.back-top {
  display: inline-flex;
  align-items: center;
  padding: 6px 18px;
  border-radius: var(--rd-pill);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  font-size: 13px;
  color: var(--c-text-2);
  transition: border-color .2s, color .2s, background .2s;
}
.back-top:hover {
  border-color: var(--c-border-hover);
  color: var(--c-glow);
  background: rgba(0,229,255,0.08);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1280px) {
  .container { max-width: 1160px; }
}
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; gap: 40px; }
  .article-aside {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
  }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .header-inner { height: 60px; }
  .main-nav {
    position: fixed;
    inset: 0;
    z-index: 80;
    background: rgba(8,14,26,0.96);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateX(100%);
    transition: transform .3s ease, opacity .3s ease, visibility .3s;
  }
  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
  }
  .main-nav ul {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  .main-nav a {
    font-size: 20px;
    padding: 14px 24px;
    color: var(--c-text-2);
  }
  .main-nav a::after { display: none; }
  .main-nav a.active { color: var(--c-glow); }
  .nav-toggle { display: inline-flex; }
  .nav-cta { display: none; }
  .hotbar-inner { height: 34px; font-size: 12px; }

  .article-title { font-size: 32px; }
  .article-meta { gap: 10px; }

  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .related-card { flex-direction: row; align-items: stretch; }
  .related-card img { width: 180px; height: auto; flex-shrink: 0; border-bottom: none; border-right: 1px solid rgba(255,255,255,0.06); }
  .related-body { flex: 1; padding: 16px; }

  .article-cta { flex-direction: column; padding: 28px 24px; text-align: center; }
  .article-cta .btn-primary { width: 100%; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }

  .article-aside {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .breadcrumb .current { max-width: 180px; }
  .article-meta { font-size: 12px; gap: 8px; }
  .article-content { font-size: 16px; }
  .section-title { font-size: 24px; }
  .related-card { flex-direction: column; }
  .related-card img { width: 100%; height: 160px; border-right: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
}
@media (max-width: 360px) {
  .article-title { font-size: 28px; }
  .btn-primary { min-width: 0; padding: 0 22px; }
  .badge-warm { display: none; }
  .hotbar-inner { justify-content: center; }
}

/* roulang page: category1 */
:root {
            --c-bg: #0B1220;
            --c-bg-2: #111B2E;
            --c-bg-footer: #080E1A;
            --c-primary: #2D7FF9;
            --c-primary-2: #00C6FF;
            --c-glow: #00E5FF;
            --c-warm: #FFC24B;
            --c-success: #34D399;
            --c-text: #F2F6FC;
            --c-text-2: #A7B4C9;
            --c-text-3: #6C7A92;
            --c-border: rgba(255, 255, 255, 0.10);
            --c-border-hover: rgba(0, 229, 255, 0.45);
            --c-card-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.03));
            --sp-section: 80px;
            --sp-section-sm: 56px;
            --sp-gap: 24px;
            --rd-card: 16px;
            --rd-btn: 10px;
            --rd-pill: 999px;
            --fs-h1: 44px;
            --fs-h2: 28px;
            --fs-h3: 20px;
            --fs-body: 16px;
            --fs-sm: 14px;
            --fs-xs: 13px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.4);
            --shadow-btn: 0 0 20px rgba(0, 229, 255, 0.4);
            --shadow-btn-hover: 0 0 34px rgba(0, 229, 255, 0.6);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--c-bg);
            color: var(--c-text);
            font-size: var(--fs-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        body,
        button,
        input {
            font-family: inherit;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            border: none;
            background: none;
            cursor: pointer;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--c-glow);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 18, 32, 0.7);
            -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(8, 14, 26, 0.92);
            border-bottom-color: var(--c-border);
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.35);
        }

        .header-inner {
            display: flex;
            align-items: center;
            min-height: 64px;
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--c-text);
            white-space: nowrap;
        }

        .brand-icon {
            width: 34px;
            height: 34px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(0, 229, 255, 0.10);
            color: var(--c-glow);
            flex: none;
        }

        .brand-icon svg {
            width: 22px;
            height: 22px;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .main-nav {
            flex: 1;
            display: flex;
            justify-content: center;
        }

        .main-nav ul {
            display: flex;
            gap: 32px;
        }

        .main-nav a {
            position: relative;
            display: inline-block;
            padding: 8px 2px;
            font-size: 15px;
            font-weight: 500;
            color: var(--c-text-2);
            transition: color 0.2s ease;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--c-primary), var(--c-glow));
            transition: width 0.25s ease;
        }

        .main-nav a:hover {
            color: var(--c-text);
        }

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

        .main-nav a.active {
            color: var(--c-text);
            font-weight: 600;
        }

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            border-radius: var(--rd-pill);
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.30);
            transition: box-shadow 0.3s ease, transform 0.2s ease;
        }

        .nav-cta:hover {
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.55);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            position: relative;
            flex: none;
            margin-left: 4px;
            border-radius: 10px;
        }

        .nav-toggle span,
        .nav-toggle span::before,
        .nav-toggle span::after {
            content: "";
            position: absolute;
            left: 12px;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--c-text);
            transition: transform 0.25s ease, background 0.25s ease;
        }

        .nav-toggle span {
            top: 21px;
        }

        .nav-toggle span::before {
            top: -6px;
        }

        .nav-toggle span::after {
            top: 6px;
        }

        .nav-toggle[aria-expanded="true"] span {
            background: transparent;
        }

        .nav-toggle[aria-expanded="true"] span::before {
            transform: translateY(6px) rotate(45deg);
        }

        .nav-toggle[aria-expanded="true"] span::after {
            transform: translateY(-6px) rotate(-45deg);
        }

        .hotbar {
            min-height: 36px;
            background: rgba(255, 255, 255, 0.04);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            transition: min-height 0.3s ease;
        }

        .hotbar-inner {
            display: flex;
            align-items: center;
            gap: 12px;
            min-height: 36px;
            font-size: 13px;
            color: var(--c-text-2);
        }

        .badge-warm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 3px 10px;
            border-radius: var(--rd-pill);
            background: rgba(255, 194, 75, 0.12);
            color: var(--c-warm);
            font-size: 12px;
            font-weight: 500;
            white-space: nowrap;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: var(--rd-pill);
            font-size: 12px;
            font-weight: 500;
            line-height: 1.4;
        }

        .badge-glow {
            background: rgba(0, 229, 255, 0.10);
            border: 1px solid rgba(0, 229, 255, 0.20);
            color: var(--c-glow);
        }

        .badge-primary {
            background: rgba(45, 127, 249, 0.16);
            border: 1px solid rgba(45, 127, 249, 0.30);
            color: #9CC7FF;
        }

        .hero-cat {
            position: relative;
            padding: 48px 0 72px;
            background-color: #0B1220;
            background-image:
                radial-gradient(circle at 78% 26%, rgba(45, 127, 249, 0.20), transparent 46%),
                radial-gradient(circle at 12% 84%, rgba(0, 229, 255, 0.08), transparent 38%),
                linear-gradient(135deg, rgba(11, 18, 32, 0.94), rgba(17, 27, 46, 0.88)),
                url('/assets/images/backpic/back-2.png');
            background-size: auto, auto, auto, cover;
            background-position: center;
            overflow: hidden;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 14px;
            color: var(--c-text-3);
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: var(--c-text-2);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--c-glow);
        }

        .breadcrumb .current {
            color: var(--c-text-3);
        }

        .bc-sep {
            color: var(--c-text-3);
            user-select: none;
        }

        .hero-cat-inner {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 48px;
            align-items: center;
        }

        .hero-cat-copy {
            max-width: 560px;
        }

        .hero-title {
            font-size: var(--fs-h1);
            font-weight: 700;
            line-height: 1.25;
            margin: 16px 0 16px;
            letter-spacing: -0.01em;
        }

        .hero-title .glow {
            color: var(--c-glow);
        }

        .hero-lead {
            font-size: 17px;
            line-height: 1.75;
            color: var(--c-text-2);
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 28px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 28px;
            font-size: 14px;
            color: var(--c-text-2);
        }

        .hero-meta li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-meta .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--c-glow);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.7);
        }

        .hero-visual {
            position: relative;
        }

        .visual-frame {
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
            aspect-ratio: 4 / 3;
            background: linear-gradient(135deg, rgba(45, 127, 249, 0.15), rgba(0, 229, 255, 0.06));
        }

        .media-frame {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(45, 127, 249, 0.15), rgba(0, 229, 255, 0.06));
        }

        .media-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .media-frame:hover img {
            transform: scale(1.03);
        }

        .media-frame.img-fallback img {
            opacity: 0;
        }

        .visual-tag {
            position: absolute;
            left: 16px;
            bottom: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border-radius: var(--rd-pill);
            background: rgba(0, 0, 0, 0.5);
            -webkit-backdrop-filter: blur(8px);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.10);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
        }

        .visual-tag .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--c-glow);
            box-shadow: 0 0 12px var(--c-glow);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--rd-pill);
            font-size: 16px;
            font-weight: 600;
            transition: box-shadow 0.25s ease, transform 0.2s ease, background 0.25s ease, border-color 0.25s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-btn-hover);
            filter: brightness(1.05);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.30);
            color: var(--c-text);
        }

        .btn-secondary:hover {
            border-color: rgba(0, 229, 255, 0.60);
            background: rgba(0, 229, 255, 0.06);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            height: 44px;
            padding: 0 22px;
            font-size: 14px;
        }

        .section {
            padding: var(--sp-section) 0;
        }

        .section-alt {
            background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.02), transparent);
        }

        .section-head {
            max-width: 720px;
            margin-bottom: 40px;
        }

        .kicker {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--c-glow);
            letter-spacing: 0.05em;
            margin-bottom: 12px;
        }

        .kicker::before {
            content: "";
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--c-glow);
        }

        .section-title {
            font-size: var(--fs-h2);
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 16px;
            color: var(--c-text-2);
            margin-top: 12px;
            line-height: 1.7;
        }

        .glass-card {
            background: var(--c-card-bg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-radius: var(--rd-card);
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .glass-card:hover {
            transform: translateY(-3px);
            border-color: var(--c-border-hover);
            box-shadow: var(--shadow-card-hover);
        }

        .featured {
            display: grid;
            grid-template-columns: 1fr 1fr;
            min-height: 220px;
            overflow: hidden;
            border-radius: 20px;
        }

        .featured .media-frame {
            min-height: 240px;
            height: 100%;
        }

        .featured-body {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 14px;
            padding: 36px;
        }

        .featured-body h3 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.4;
        }

        .featured-body p {
            font-size: 15px;
            color: var(--c-text-2);
            line-height: 1.7;
        }

        .featured-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px 16px;
            margin-top: 4px;
        }

        .featured-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--c-text-2);
        }

        .featured-list li::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--c-glow);
            flex: none;
        }

        .cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scene-card {
            display: flex;
            flex-direction: column;
            gap: 14px;
            padding: 18px;
            border-radius: var(--rd-card);
            cursor: pointer;
        }

        .scene-card .media-frame {
            height: 160px;
            border-radius: 12px;
        }

        .scene-card h3 {
            font-size: var(--fs-h3);
            font-weight: 700;
            line-height: 1.4;
        }

        .scene-card p {
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.7;
            flex: 1;
        }

        .scene-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--c-glow);
            margin-top: 4px;
        }

        .scene-card .card-link svg {
            width: 16px;
            height: 16px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            transition: transform 0.2s ease;
        }

        .scene-card:hover .card-link svg {
            transform: translateX(4px);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            position: relative;
            padding: 28px 24px;
            border-radius: var(--rd-card);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
        }

        .step-card:hover {
            border-color: rgba(0, 229, 255, 0.35);
            transform: translateY(-3px);
            background: rgba(255, 255, 255, 0.05);
        }

        .step-num {
            font-size: 34px;
            font-weight: 700;
            line-height: 1;
            color: rgba(0, 229, 255, 0.45);
            font-feature-settings: "tnum";
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-top: 16px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.7;
            margin-top: 10px;
        }

        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            display: flex;
            flex-direction: column;
            gap: 14px;
            padding: 28px;
        }

        .stars {
            display: flex;
            gap: 4px;
            color: var(--c-warm);
        }

        .stars svg {
            width: 16px;
            height: 16px;
            fill: currentColor;
        }

        .review-text {
            font-size: 14px;
            line-height: 1.75;
            color: var(--c-text-2);
            border-left: 2px solid rgba(0, 229, 255, 0.30);
            padding-left: 14px;
            margin-top: 4px;
        }

        .reviewer {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: auto;
        }

        .avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            flex: none;
        }

        .avatar.alt {
            background: linear-gradient(135deg, #FF9F43, #FFC24B);
        }

        .reviewer-name {
            font-size: 13px;
            color: var(--c-text-3);
        }

        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 0;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-icon {
            width: 20px;
            height: 20px;
            flex: none;
            fill: none;
            stroke: var(--c-glow);
            stroke-width: 2;
            stroke-linecap: round;
            transition: transform 0.25s ease;
        }

        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item p {
            padding: 0 0 18px;
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.75;
        }

        .section-cta {
            padding: 0 0 76px;
        }

        .cta-band-inner {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            min-height: 100px;
            padding: 32px 36px;
            border-radius: 20px;
            overflow: hidden;
            background-color: #0E1626;
            background-image:
                linear-gradient(90deg, rgba(45, 127, 249, 0.30), rgba(0, 229, 255, 0.06)),
                url('/assets/images/backpic/back-3.webp');
            background-size: cover, cover;
            background-position: center;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .cta-band-inner h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
        }

        .cta-band-inner p {
            font-size: 14px;
            color: var(--c-text-2);
            margin-top: 6px;
        }

        .cta-band-inner .btn {
            flex: none;
        }

        .site-footer {
            background: var(--c-bg-footer);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
        }

        .footer-brand .brand {
            font-size: 20px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.75;
            margin-top: 14px;
            max-width: 320px;
        }

        .social-links {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .social-links a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            color: var(--c-text-2);
            transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease;
        }

        .social-links a:hover {
            color: var(--c-glow);
            background: rgba(0, 229, 255, 0.10);
            transform: translateY(-2px);
        }

        .social-links svg {
            width: 18px;
            height: 18px;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-links li+li {
            margin-top: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--c-text-2);
            padding-bottom: 2px;
            border-bottom: 1px solid transparent;
            transition: color 0.2s ease, border-color 0.2s ease;
        }

        .footer-links a:hover {
            color: #fff;
            border-color: var(--c-glow);
        }

        .footer-contact li {
            display: flex;
            gap: 10px;
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.6;
        }

        .footer-contact li+li {
            margin-top: 10px;
        }

        .footer-contact strong {
            color: var(--c-text);
            font-weight: 600;
        }

        .copyright {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 48px;
            padding-top: 24px;
            font-size: 13px;
            color: var(--c-text-3);
        }

        .copyright-left {
            max-width: 720px;
            line-height: 1.6;
        }

        .back-top {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 36px;
            padding: 0 16px;
            border-radius: var(--rd-pill);
            background: rgba(255, 255, 255, 0.06);
            color: var(--c-text-2);
            font-size: 13px;
            transition: background 0.25s ease, color 0.25s ease;
        }

        .back-top:hover {
            background: rgba(0, 229, 255, 0.12);
            color: var(--c-glow);
        }

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

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }

            .hero-cat-inner {
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                inset: 0;
                z-index: 90;
                display: flex;
                align-items: center;
                justify-content: center;
                background: rgba(8, 14, 26, 0.97);
                -webkit-backdrop-filter: blur(24px);
                backdrop-filter: blur(24px);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-100%);
                transition: transform 0.35s ease, opacity 0.35s ease, visibility 0.35s;
            }

            .main-nav.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }

            .main-nav ul {
                flex-direction: column;
                gap: 28px;
                text-align: center;
            }

            .main-nav a {
                font-size: 22px;
                font-weight: 600;
                color: var(--c-text);
            }

            .main-nav a:hover {
                color: var(--c-glow);
            }

            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .nav-cta {
                height: 44px;
                padding: 0 16px;
                font-size: 13px;
            }

            .hotbar {
                display: none;
            }

            .hero-cat {
                padding: 40px 0 56px;
            }

            .hero-cat-inner {
                grid-template-columns: 1fr;
            }

            .hero-copy {
                order: 1;
            }

            .hero-visual {
                order: 2;
                max-width: 420px;
                margin: 0 auto;
                width: 100%;
            }

            .hero-title {
                font-size: 34px;
            }

            .featured {
                grid-template-columns: 1fr;
            }

            .featured .media-frame {
                min-height: 200px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

            .section {
                padding: var(--sp-section-sm) 0;
            }

            .header-inner {
                gap: 12px;
            }

            .brand {
                font-size: 18px;
                gap: 8px;
            }

            .brand-icon {
                width: 32px;
                height: 32px;
            }

            .brand-icon svg {
                width: 20px;
                height: 20px;
            }

            .hero-actions {
                flex-direction: column;
            }

            .btn {
                width: 100%;
            }

            .btn-sm {
                width: auto;
            }

            .featured-body {
                padding: 24px;
            }

            .featured-list {
                grid-template-columns: 1fr;
            }

            .cat-grid,
            .review-grid,
            .process-grid {
                grid-template-columns: 1fr;
            }

            .cta-band-inner {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 24px;
            }

            .cta-band-inner .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .copyright {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 360px) {
            .container {
                padding: 0 16px;
            }

            .hero-title {
                font-size: 30px;
            }

            .hero-meta {
                gap: 12px;
            }

            .footer-grid {
                gap: 32px;
            }
        }

/* roulang page: category2 */
:root {
            --c-bg: #0B1220;
            --c-bg-2: #111B2E;
            --c-bg-footer: #080E1A;
            --c-primary: #2D7FF9;
            --c-primary-2: #00C6FF;
            --c-glow: #00E5FF;
            --c-warm: #FFC24B;
            --c-success: #34D399;
            --c-text: #F2F6FC;
            --c-text-2: #A7B4C9;
            --c-text-3: #6C7A92;
            --c-border: rgba(255,255,255,0.10);
            --c-border-hover: rgba(0,229,255,0.45);
            --sp-section: 80px;
            --sp-card: 24px;
            --sp-item: 16px;
            --rd-card: 16px;
            --rd-btn: 10px;
            --rd-pill: 999px;
            --fs-h1: 42px;
            --fs-h2: 28px;
            --fs-h3: 20px;
            --fs-body: 15px;
            --fs-small: 13px;
            --fs-tiny: 12px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--c-bg);
            color: var(--c-text);
            font-size: var(--fs-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--c-text);
            text-decoration: none;
            transition: color 0.2s;
        }

        a:hover {
            color: var(--c-glow);
        }

        a:focus-visible {
            outline: 2px solid var(--c-glow);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            min-width: 160px;
            padding: 0 28px;
            border-radius: var(--rd-pill);
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
            transition: box-shadow 0.3s, transform 0.2s, filter 0.2s;
        }

        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.6);
            filter: brightness(1.05);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--c-glow);
            outline-offset: 3px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            min-width: 160px;
            padding: 0 28px;
            border-radius: var(--rd-pill);
            font-size: 16px;
            font-weight: 500;
            color: var(--c-text);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: border-color 0.3s, background 0.3s, transform 0.2s;
        }

        .btn-secondary:hover {
            border-color: rgba(0, 229, 255, 0.6);
            background: rgba(0, 229, 255, 0.06);
            color: var(--c-text);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--c-glow);
            outline-offset: 3px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 18, 32, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: background 0.3s, box-shadow 0.3s, border-color 0.3s;
            border-bottom: 1px solid transparent;
        }

        .site-header.scrolled {
            background: rgba(8, 14, 26, 0.92);
            border-bottom: 1px solid var(--c-border);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 16px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 700;
            color: var(--c-text);
            white-space: nowrap;
        }

        .brand:hover {
            color: var(--c-text);
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(45, 127, 249, 0.25), rgba(0, 229, 255, 0.12));
            border: 1px solid rgba(0, 229, 255, 0.25);
            flex-shrink: 0;
        }

        .brand-icon svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--c-glow);
            stroke-width: 1.6;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .main-nav a {
            display: inline-block;
            position: relative;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--c-text-2);
            border-radius: 8px;
            transition: color 0.2s;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--c-primary), var(--c-glow));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.2s;
        }

        .main-nav a:hover {
            color: var(--c-text);
        }

        .main-nav a:hover::after {
            transform: scaleX(1);
        }

        .main-nav a.active {
            color: var(--c-text);
            font-weight: 600;
        }

        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 38px;
            padding: 0 22px;
            border-radius: var(--rd-pill);
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
            transition: box-shadow 0.3s, filter 0.2s, transform 0.2s;
            white-space: nowrap;
        }

        .nav-cta:hover {
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.45);
            filter: brightness(1.05);
            color: #fff;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--c-border);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-toggle span {
            position: relative;
            width: 18px;
            height: 2px;
            background: var(--c-text);
            border-radius: 2px;
            transition: background 0.2s;
        }

        .nav-toggle span::before,
        .nav-toggle span::after {
            content: "";
            position: absolute;
            left: 0;
            width: 18px;
            height: 2px;
            background: var(--c-text);
            border-radius: 2px;
            transition: transform 0.2s, top 0.2s;
        }

        .nav-toggle span::before {
            top: -6px;
        }

        .nav-toggle span::after {
            top: 6px;
        }

        .nav-toggle.active span {
            background: transparent;
        }

        .nav-toggle.active span::before {
            top: 0;
            transform: rotate(45deg);
        }

        .nav-toggle.active span::after {
            top: 0;
            transform: rotate(-45deg);
        }

        .hotbar {
            background: rgba(255, 255, 255, 0.04);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            height: 36px;
            display: flex;
            align-items: center;
        }

        .hotbar-inner {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: var(--fs-small);
            color: var(--c-text-2);
        }

        .badge-warm {
            display: inline-flex;
            align-items: center;
            height: 22px;
            padding: 0 10px;
            border-radius: var(--rd-pill);
            font-size: 12px;
            font-weight: 600;
            color: var(--c-warm);
            background: rgba(255, 194, 75, 0.12);
            border: 1px solid rgba(255, 194, 75, 0.2);
            white-space: nowrap;
        }

        /* ===== Category Hero ===== */
        .cat-hero {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            padding: 64px 0 56px;
            overflow: hidden;
        }

        .cat-hero::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.12), transparent 70%);
            pointer-events: none;
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

        .cat-hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: center;
        }

        .cat-hero-badge {
            display: inline-flex;
            align-items: center;
            height: 26px;
            padding: 0 14px;
            border-radius: var(--rd-pill);
            font-size: 12px;
            font-weight: 600;
            color: var(--c-glow);
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.2);
            margin-bottom: 16px;
        }

        .cat-hero-text h1 {
            font-size: var(--fs-h1);
            font-weight: 700;
            line-height: 1.3;
            color: var(--c-text);
            margin-bottom: 14px;
        }

        .cat-hero-text p {
            font-size: 16px;
            line-height: 1.7;
            color: var(--c-text-2);
            max-width: 480px;
            margin-bottom: 28px;
        }

        .cat-hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cat-hero-visual .hero-card {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--c-border);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
            background: linear-gradient(135deg, rgba(45, 127, 249, 0.15), rgba(0, 229, 255, 0.06));
            aspect-ratio: 9 / 14;
            max-height: 360px;
        }

        .cat-hero-visual .hero-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-card-status {
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border-radius: var(--rd-pill);
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(8px);
            font-size: 12px;
            color: #fff;
        }

        .status-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--c-success);
            box-shadow: 0 0 8px rgba(52, 211, 153, 0.6);
        }

        /* ===== Features ===== */
        .features {
            padding: var(--sp-section) 0;
            background: var(--c-bg-2);
        }

        .features .container {
            max-width: 1200px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--c-border);
            border-radius: var(--rd-card);
            padding: 28px 24px;
            transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
        }

        .feature-card:hover {
            transform: translateY(-3px);
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(45, 127, 249, 0.2), rgba(0, 229, 255, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .feature-icon svg {
            width: 22px;
            height: 22px;
            fill: none;
            stroke: var(--c-glow);
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--c-text);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.7;
        }

        /* ===== News Content ===== */
        .news-content {
            padding: var(--sp-section) 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: var(--fs-h2);
            font-weight: 700;
            line-height: 1.3;
            color: var(--c-text);
        }

        .section-head p {
            font-size: 14px;
            color: var(--c-text-2);
            margin-top: 6px;
        }

        .section-more {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            color: var(--c-text-2);
            border-bottom: 1px solid transparent;
            transition: color 0.2s, border-color 0.2s;
            padding-bottom: 2px;
        }

        .section-more:hover {
            color: var(--c-glow);
            border-color: var(--c-glow);
        }

        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 36px;
            align-items: start;
        }

        .article-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .article-card {
            display: block;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--c-border);
            border-radius: var(--rd-card);
            padding: 22px 20px;
            transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
            min-height: 160px;
        }

        .article-card:hover {
            transform: translateY(-3px);
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
        }

        .article-card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
        }

        .article-tag {
            display: inline-flex;
            align-items: center;
            height: 22px;
            padding: 0 10px;
            border-radius: var(--rd-pill);
            font-size: 12px;
            font-weight: 500;
            color: var(--c-glow);
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.15);
        }

        .article-date {
            font-size: var(--fs-tiny);
            color: var(--c-text-3);
            font-feature-settings: "tnum";
        }

        .article-card h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--c-text);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card p {
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: var(--c-text-3);
            margin-top: 12px;
            transition: color 0.2s;
        }

        .article-card:hover .article-card-link {
            color: var(--c-glow);
        }

        .article-card-link svg {
            width: 14px;
            height: 14px;
            transition: transform 0.2s;
        }

        .article-card:hover .article-card-link svg {
            transform: translateX(3px);
        }

        /* ===== Tag Sidebar ===== */
        .tag-sidebar {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--c-border);
            border-radius: var(--rd-card);
            padding: 24px 20px;
            position: sticky;
            top: 120px;
        }

        .tag-sidebar h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--c-text);
            margin-bottom: 16px;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-list a {
            display: inline-flex;
            align-items: center;
            height: 28px;
            padding: 0 14px;
            border-radius: var(--rd-pill);
            font-size: 13px;
            color: var(--c-text-2);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.2s, color 0.2s, border-color 0.2s;
        }

        .tag-list a:hover {
            color: var(--c-text);
            background: rgba(0, 229, 255, 0.08);
            border-color: rgba(0, 229, 255, 0.3);
        }

        .tag-sidebar-note {
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--c-text-3);
            line-height: 1.6;
        }

        /* ===== Scenarios ===== */
        .scenarios {
            padding: var(--sp-section) 0;
            background: var(--c-bg-2);
        }

        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--c-border);
            border-radius: var(--rd-card);
            padding: 32px 24px;
            transition: transform 0.3s, border-color 0.3s;
        }

        .scenario-card:hover {
            transform: translateY(-3px);
            border-color: rgba(0, 229, 255, 0.35);
        }

        .scenario-num {
            font-size: 14px;
            font-weight: 600;
            color: var(--c-glow);
            font-feature-settings: "tnum";
            margin-bottom: 12px;
        }

        .scenario-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--c-text);
            margin-bottom: 10px;
        }

        .scenario-card p {
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--sp-section) 0;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .faq-item:first-child {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--c-text);
            list-style: none;
            transition: color 0.2s;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            color: var(--c-glow);
        }

        .faq-item summary::after {
            content: "+";
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--c-border);
            font-size: 18px;
            font-weight: 400;
            color: var(--c-text-2);
            transition: transform 0.2s, border-color 0.2s, color 0.2s;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
            border-color: var(--c-glow);
            color: var(--c-glow);
        }

        .faq-item .faq-answer {
            padding: 0 0 20px;
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.7;
            max-width: 640px;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: linear-gradient(135deg, rgba(45, 127, 249, 0.15), rgba(0, 229, 255, 0.08));
            border-top: 1px solid rgba(0, 229, 255, 0.15);
            border-bottom: 1px solid rgba(0, 229, 255, 0.15);
            padding: 0;
        }

        .cta-banner-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            min-height: 100px;
            padding: 20px 0;
            flex-wrap: wrap;
        }

        .cta-banner-text {
            font-size: 16px;
            color: var(--c-text);
            font-weight: 500;
            max-width: 560px;
            line-height: 1.6;
        }

        .cta-banner-text span {
            color: var(--c-glow);
        }

        .cta-banner .btn-primary {
            min-width: 140px;
            height: 44px;
            animation: glowPulse 2.4s infinite;
        }

        @keyframes glowPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
            }
            50% {
                box-shadow: 0 0 34px rgba(0, 229, 255, 0.55);
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--c-bg-footer);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--c-text-2);
            line-height: 1.7;
            margin: 16px 0 20px;
            max-width: 280px;
        }

        .social-links {
            display: flex;
            gap: 10px;
        }

        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            border: 1px solid var(--c-border);
            background: rgba(255, 255, 255, 0.03);
            transition: border-color 0.2s, background 0.2s;
        }

        .social-links a:hover {
            border-color: rgba(0, 229, 255, 0.4);
            background: rgba(0, 229, 255, 0.06);
        }

        .social-links svg {
            width: 16px;
            height: 16px;
            fill: none;
            stroke: var(--c-text-2);
            stroke-width: 1.6;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .social-links a:hover svg {
            stroke: var(--c-glow);
        }

        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--c-text);
            margin-bottom: 16px;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--c-text-2);
            transition: color 0.2s;
            border-bottom: 1px solid transparent;
        }

        .footer-links a:hover {
            color: var(--c-text);
            border-bottom-color: var(--c-glow);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            flex-wrap: wrap;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--c-text-3);
        }

        .to-top {
            display: inline-flex;
            align-items: center;
            height: 34px;
            padding: 0 18px;
            border-radius: var(--rd-pill);
            font-size: 13px;
            color: var(--c-text-2);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--c-border);
            transition: border-color 0.2s, color 0.2s, background 0.2s;
        }

        .to-top:hover {
            color: var(--c-glow);
            border-color: rgba(0, 229, 255, 0.4);
            background: rgba(0, 229, 255, 0.06);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1280px) {
            :root {
                --fs-h1: 38px;
            }
        }

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

            .content-grid {
                grid-template-columns: 1fr;
            }

            .tag-sidebar {
                position: static;
            }

            .scenarios-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .cat-hero-inner {
                grid-template-columns: 1fr 260px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --sp-section: 56px;
                --fs-h1: 32px;
                --fs-h2: 24px;
            }

            .header-inner {
                height: 60px;
            }

            .main-nav {
                position: fixed;
                top: 0;
                right: 0;
                bottom: 0;
                width: 100%;
                max-width: 320px;
                background: rgba(8, 14, 26, 0.96);
                backdrop-filter: blur(20px);
                transform: translateX(100%);
                transition: transform 0.3s;
                padding: 80px 24px 24px;
                z-index: 999;
                overflow-y: auto;
                border-left: 1px solid var(--c-border);
            }

            .main-nav.open {
                transform: translateX(0);
            }

            .main-nav ul {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

            .main-nav a {
                display: block;
                padding: 14px 12px;
                font-size: 16px;
            }

            .main-nav a::after {
                display: none;
            }

            .main-nav a.active {
                background: rgba(0, 229, 255, 0.08);
                border-radius: 8px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .hotbar-inner {
                font-size: 12px;
                gap: 8px;
            }

            .cat-hero {
                min-height: auto;
                padding: 48px 0 40px;
            }

            .cat-hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cat-hero-visual {
                max-width: 260px;
                margin: 0 auto;
                width: 100%;
            }

            .cat-hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .cat-hero-actions .btn-primary,
            .cat-hero-actions .btn-secondary {
                width: 100%;
            }

            .article-grid {
                grid-template-columns: 1fr;
            }

            .scenarios-grid {
                grid-template-columns: 1fr;
            }

            .content-grid {
                gap: 24px;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                margin-bottom: 24px;
            }

            .cta-banner-inner {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 0;
            }

            .cta-banner .btn-primary {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .article-card {
                padding: 18px 16px;
            }

            .cat-hero-text p {
                font-size: 15px;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                min-width: 0;
            }

            .hotbar {
                overflow: hidden;
                white-space: nowrap;
            }

            .hotbar-inner span:last-child {
                overflow: hidden;
                text-overflow: ellipsis;
            }
        }

        @media (max-width: 360px) {
            .container {
                padding: 0 12px;
            }

            :root {
                --fs-h1: 28px;
                --fs-h2: 22px;
            }

            .footer-bottom p {
                font-size: 12px;
            }
        }

        /* ===== Utility ===== */
        ::selection {
            background: rgba(0, 229, 255, 0.2);
            color: var(--c-text);
        }

        .tag-sidebar a:focus-visible,
        .article-card:focus-visible {
            outline: 2px solid var(--c-glow);
            outline-offset: 2px;
        }