/* roulang page: index */
:root {
            --primary: #6941E5;
            --primary-deep: #4B2BA6;
            --accent: #FF6B3D;
            --accent-deep: #E8452C;
            --dark: #1B1631;
            --bg: #F7F5FB;
            --card: #FFFFFF;
            --aux: #F0ECF7;
            --success: #00B578;
            --warning: #F8B62A;
            --text: #191523;
            --muted: #5F5972;
            --line: #E0D7EC;
            --soft-line: #E5DEF0;
            --white: #FFFFFF;
            --radius-lg: 28px;
            --radius-md: 20px;
            --radius-sm: 14px;
            --shadow-card: 0 8px 30px rgba(28, 16, 55, 0.08);
            --shadow-hover: 0 16px 40px rgba(28, 16, 55, 0.14);
            --font-main: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

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

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

        body {
            font-family: var(--font-main);
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        ul,
        ol {
            list-style: none;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: 0;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        :focus-visible {
            outline: 4px solid rgba(105, 65, 229, 0.18);
            outline-offset: 2px;
        }

        .layout {
            width: 100%;
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            height: 100vh;
            background: #FCFBFF;
            border-right: 1px solid var(--soft-line);
            z-index: 1000;
            display: flex;
            flex-direction: column;
        }

        .side-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 30px 20px 24px;
            overflow-y: auto;
        }

        .brand {
            padding: 0 8px;
            margin-bottom: 32px;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            flex: 0 0 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--dark));
            color: #fff;
            border-radius: 14px;
            font-size: 20px;
            font-weight: 900;
            letter-spacing: -0.5px;
            box-shadow: 0 6px 18px rgba(105, 65, 229, 0.26);
        }

        .brand-name {
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: 0.2px;
        }

        .side-nav {
            margin-bottom: 18px;
        }

        .nav-caption {
            font-size: 13px;
            color: var(--muted);
            padding: 0 14px;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .nav-list {
            display: grid;
            gap: 6px;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 14px;
            color: #443D5A;
            font-weight: 600;
            font-size: 15px;
            position: relative;
            transition: background 0.25s ease, color 0.25s ease;
        }

        .nav-link .nav-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #D5CBE7;
            flex: 0 0 auto;
            transition: background 0.25s ease;
        }

        .nav-link:hover {
            background: #F6F1FE;
            color: var(--primary);
        }

        .nav-link:hover .nav-dot {
            background: var(--primary);
        }

        .nav-link.active {
            background: #F1EBFE;
            color: var(--primary);
            font-weight: 700;
        }

        .nav-link.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 20%;
            width: 4px;
            height: 60%;
            border-radius: 0 6px 6px 0;
            background: var(--primary);
        }

        .nav-link.active .nav-dot {
            background: var(--primary);
        }

        .side-foot {
            margin-top: auto;
            background: #F3F0FB;
            border: 1px solid #E7DFF3;
            border-radius: 22px;
            padding: 20px;
        }

        .safe-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            background: rgba(0, 181, 120, 0.08);
            border: 1px solid rgba(0, 181, 120, 0.16);
            padding: 6px 12px;
            border-radius: 999px;
            margin-bottom: 16px;
            font-weight: 600;
        }

        .safe-badge .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 0 4px rgba(0, 181, 120, 0.1);
        }

        .side-note {
            font-size: 13px;
            line-height: 1.7;
            color: var(--muted);
            margin-top: 14px;
        }

        .main-content {
            margin-left: 280px;
            width: calc(100% - 280px);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .topbar-mobile {
            display: none;
        }

        .sidebar-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(20, 12, 34, 0.52);
            z-index: 990;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

        .content-shell {
            max-width: 1320px;
            width: 100%;
            margin: 0 auto;
            padding: 0 44px;
        }

        .hero {
            position: relative;
            overflow: hidden;
            background: linear-gradient(118deg, #1B1631 0%, #4A2E94 52%, #6941E5 100%);
            color: #fff;
            border-radius: 0 0 28px 28px;
        }

        .hero::before {
            content: "";
            position: absolute;
            width: 520px;
            height: 520px;
            right: -120px;
            top: -160px;
            background: radial-gradient(circle, rgba(255, 107, 61, 0.28), transparent 70%);
            pointer-events: none;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            opacity: 0.18;
            overflow: hidden;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-shell {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1rem 1fr 0.1fr;
        }

        .hero-content {
            grid-column: 1;
            grid-row: 1;
            max-width: 680px;
            padding: 80px 0 76px 0;
        }

        .hero-visual {
            grid-column: 2;
            grid-row: 1;
            display: flex;
            align-items: center;
            justify-content: flex-end;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.16);
            padding: 6px 14px;
            border-radius: 999px;
            color: #EBDDFF;
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.8px;
            margin-bottom: 18px;
        }

        .hero h1 {
            font-size: clamp(40px, 5.6vw, 60px);
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: 0.5px;
            display: flex;
            flex-direction: column;
            color: #fff;
            margin-bottom: 20px;
        }

        .hero h1 small {
            font-size: clamp(20px, 2.4vw, 28px);
            font-weight: 600;
            color: #D5C3FF;
            margin-top: 6px;
            line-height: 1.5;
        }

        .hero-lead {
            font-size: 18px;
            color: #D9D0E6;
            max-width: 570px;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 26px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 16px;
            line-height: 1;
            padding: 0 28px;
            height: 52px;
            border: 1px solid transparent;
            transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
        }

        .btn:hover {
            transform: translateY(-2px);
        }

        .btn:active {
            transform: scale(0.98);
            box-shadow: inset 0 3px 8px rgba(0, 0, 0, 0.14);
        }

        .btn-large {
            height: 56px;
            padding: 0 34px;
            font-size: 17px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #FF6B3D, #E8452C);
            color: #fff;
            box-shadow: 0 10px 24px rgba(255, 107, 61, 0.24);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #FF7B4D, #F15030);
            box-shadow: 0 14px 28px rgba(255, 107, 61, 0.34);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            border-color: #fff;
        }

        .btn-outline {
            background: #fff;
            border: 1px solid #D2C4E8;
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(105, 65, 229, 0.06);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: #FAF7FF;
            box-shadow: 0 8px 18px rgba(105, 65, 229, 0.12);
        }

        .btn-block {
            width: 100%;
        }

        .hero-facts {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-fact {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(0, 0, 0, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 999px;
            padding: 9px 16px;
            font-size: 14px;
            color: #EEE6FA;
        }

        .hero-fact strong {
            color: #FFD9CB;
            font-weight: 800;
        }

        .preview-panel {
            width: min(420px, 100%);
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 32px;
            padding: 18px;
            box-shadow: 0 28px 50px rgba(15, 5, 30, 0.22);
            backdrop-filter: none;
        }

        .preview-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 2px 4px 12px;
        }

        .preview-dots {
            display: flex;
            gap: 6px;
        }

        .preview-dots i {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.34);
        }

        .preview-title {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.86);
            font-weight: 600;
        }

        .preview-frame {
            border-radius: 24px;
            overflow: hidden;
            position: relative;
            border: 1px solid rgba(255, 255, 255, 0.16);
        }

        .preview-frame img {
            width: 100%;
            height: 250px;
            object-fit: cover;
        }

        .preview-tag {
            position: absolute;
            left: 14px;
            bottom: 14px;
            background: rgba(27, 22, 49, 0.75);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: 999px;
            padding: 7px 14px;
            font-size: 13px;
            font-weight: 600;
        }

        .page-section {
            padding: 92px 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 40px;
        }

        .section-kicker {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: block;
        }

        .section-title {
            font-size: clamp(24px, 3vw, 38px);
            font-weight: 800;
            letter-spacing: 0.2px;
            line-height: 1.35;
            color: var(--text);
        }

        .section-sub {
            max-width: 560px;
            color: var(--muted);
            font-size: 17px;
            line-height: 1.7;
        }

        .section-link {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            border-bottom: 2px solid rgba(105, 65, 229, 0.2);
            padding-bottom: 3px;
        }

        .section-link:hover {
            border-color: var(--primary);
        }

        .guide-block {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 42px 46px;
            display: grid;
            grid-template-columns: 0.88fr 1.12fr;
            gap: 44px;
            align-items: center;
        }

        .guide-copy h3 {
            font-size: 22px;
            margin: 12px 0 14px;
            color: var(--text);
            font-weight: 800;
            line-height: 1.45;
        }

        .guide-copy p {
            color: var(--muted);
            margin-bottom: 18px;
        }

        .guide-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .guide-tag {
            display: inline-flex;
            align-items: center;
            background: #F5F1FE;
            border: 1px solid #E3DAF5;
            color: #3D2A7A;
            border-radius: 999px;
            padding: 8px 14px;
            font-size: 13px;
            font-weight: 600;
        }

        .guide-tag .ic {
            color: var(--primary);
            margin-right: 5px;
            font-style: normal;
        }

        .facts-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .fact-card {
            background: #FCFAFF;
            border: 1px solid #E8DFF5;
            border-radius: 18px;
            padding: 23px 21px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .fact-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 24px rgba(86, 52, 163, 0.1);
        }

        .fact-index {
            display: inline-flex;
            width: 34px;
            height: 34px;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            margin-bottom: 13px;
        }

        .fact-card:nth-child(4) .fact-index {
            background: var(--accent);
        }

        .fact-card h4 {
            font-size: 17px;
            font-weight: 800;
            margin-bottom: 7px;
        }

        .fact-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        .carousel-wrap {
            background: var(--card);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            border-radius: var(--radius-lg);
            padding: 34px;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 34px;
            align-items: stretch;
        }

        .carousel-stage {
            min-height: 400px;
        }

        .feature-viewport {
            position: relative;
            width: 100%;
            height: 100%;
            min-height: 380px;
            overflow: hidden;
            border-radius: 22px;
        }

        .feature-slide {
            position: absolute;
            inset: 0;
            opacity: 0;
            visibility: hidden;
            transform: scale(0.985);
            transition: opacity 0.4s ease, visibility 0.4s ease, transform 0.4s ease;
        }

        .feature-slide.active {
            opacity: 1;
            visibility: visible;
            transform: scale(1);
        }

        .feature-slide img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .slide-copy {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            padding: 28px;
            z-index: 1;
            background: linear-gradient(transparent, rgba(26, 14, 43, 0.88) 62%);
            color: #fff;
        }

        .slide-copy h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 5px;
        }

        .slide-copy p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.86);
            line-height: 1.65;
        }

        .feature-tabs {
            display: grid;
            gap: 12px;
        }

        .feature-tab {
            display: grid;
            grid-template-columns: 66px 1fr;
            gap: 14px;
            background: #FAF8FE;
            border: 1px solid #EBE3F7;
            border-radius: 16px;
            padding: 12px;
            text-align: left;
            transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .feature-tab:hover {
            background: #F3EEFD;
        }

        .feature-tab.active {
            background: #F1EBFE;
            border-color: #CBB9F0;
            box-shadow: 0 6px 16px rgba(105, 65, 229, 0.08);
        }

        .feature-tab-img {
            width: 66px;
            height: 50px;
            border-radius: 10px;
            overflow: hidden;
        }

        .feature-tab-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-tab-copy h4 {
            font-size: 15px;
            font-weight: 800;
            margin-bottom: 2px;
            color: var(--text);
        }

        .feature-tab-copy p {
            font-size: 12px;
            color: var(--muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .env-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .env-panel {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 36px;
        }

        .env-panel h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 22px;
        }

        .env-list {
            display: grid;
            gap: 12px;
        }

        .env-item {
            display: flex;
            align-items: flex-start;
            gap: 13px;
            font-size: 15px;
            color: #3E3852;
            line-height: 1.6;
        }

        .env-item .env-ic {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: #EEEAFA;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex: 0 0 auto;
            margin-top: 2px;
        }

        .spec-table {
            width: 100%;
            border-collapse: collapse;
            overflow: hidden;
            font-size: 15px;
        }

        .spec-table th {
            background: #F0EBFA;
            color: #3C2C63;
            font-weight: 800;
            text-align: left;
            padding: 13px 16px;
            border-bottom: 1px solid #DCCFEE;
        }

        .spec-table td {
            padding: 14px 16px;
            border-bottom: 1px solid #EEE8F5;
            color: #4A4259;
        }

        .spec-table tr:last-child td {
            border-bottom: 0;
        }

        .review-summary {
            background: linear-gradient(135deg, #1B1631, #543CA9);
            color: #fff;
            border-radius: 999px;
            padding: 10px 22px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .review-wall {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            align-items: start;
        }

        .review-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 20px;
            padding: 24px 24px 26px;
            box-shadow: var(--shadow-card);
        }

        .review-card:nth-child(2) {
            margin-top: 28px;
        }

        .review-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .review-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, #C7B7F1, #8667E5);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 15px;
        }

        .review-user {
            font-weight: 700;
            font-size: 15px;
            display: block;
        }

        .review-time {
            font-size: 12px;
            color: var(--muted);
        }

        .review-star {
            color: var(--warning);
            font-size: 14px;
            letter-spacing: 3px;
            margin-bottom: 9px;
        }

        .review-card p {
            color: #4A4255;
            font-size: 14px;
            line-height: 1.8;
        }

        .latest-layout {
            display: grid;
            grid-template-columns: 1.05fr 1fr;
            gap: 24px;
        }

        .featured-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .featured-card .featured-img {
            height: 260px;
            overflow: hidden;
            position: relative;
            flex: 0 0 auto;
        }

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

        .featured-card:hover .featured-img img {
            transform: scale(1.03);
        }

        .badge-tag {
            position: absolute;
            left: 14px;
            top: 14px;
            background: rgba(27, 22, 49, 0.64);
            border: 1px solid rgba(255, 255, 255, 0.24);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 13px;
            padding: 5px 13px;
            border-radius: 999px;
        }

        .featured-card-body {
            padding: 22px 24px 24px;
        }

        .featured-card-body h3 {
            font-size: 22px;
            line-height: 1.45;
            font-weight: 800;
            margin-bottom: 9px;
        }

        .featured-card-body h3 a:hover {
            color: var(--primary);
        }

        .featured-card-body p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 18px;
        }

        .featured-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            font-size: 13px;
            color: var(--muted);
            flex-wrap: wrap;
        }

        .read-more {
            color: var(--primary);
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .read-more:hover {
            color: var(--accent);
        }

        .side-post-list {
            display: grid;
            gap: 12px;
        }

        .side-post-item {
            display: block;
            background: var(--card);
            border: 1px solid #EBE3F5;
            border-radius: 16px;
            padding: 16px 18px;
            transition: background 0.3s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }

        .side-post-item:hover {
            background: #FAF7FF;
            box-shadow: 0 8px 20px rgba(105, 65, 229, 0.07);
            transform: translateX(3px);
        }

        .side-post-top {
            display: flex;
            align-items: center;
            gap: 9px;
            margin-bottom: 7px;
        }

        .post-cat {
            background: #F0EBFC;
            color: var(--primary);
            border-radius: 999px;
            padding: 2px 10px;
            font-size: 12px;
            font-weight: 700;
        }

        .side-post-time {
            font-size: 12px;
            color: var(--muted);
        }

        .side-post-title {
            font-size: 15px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .side-post-title a:hover {
            color: var(--primary);
        }

        .side-post-excerpt {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .empty-state {
            background: var(--card);
            border: 1px dashed #D3C5E6;
            border-radius: 18px;
            padding: 28px;
            text-align: center;
            color: var(--muted);
            font-size: 15px;
        }

        .faq-grid {
            max-width: 1000px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 16px;
            overflow: hidden;
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            gap: 20px;
            padding: 19px 22px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            transition: color 0.25s ease;
        }

        .faq-q:hover {
            color: var(--primary);
        }

        .faq-q .faq-icon {
            width: 28px;
            height: 28px;
            flex: 0 0 auto;
            border-radius: 50%;
            background: #F4EFFC;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            line-height: 1;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-item.open .faq-q {
            color: var(--primary);
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.open .faq-a {
            max-height: 360px;
        }

        .faq-a p {
            padding: 0 22px 20px;
            color: var(--muted);
            line-height: 1.9;
            font-size: 15px;
        }

        .download-cta {
            position: relative;
            overflow: hidden;
            border-radius: 32px;
            padding: 74px 40px;
            color: #fff;
            text-align: center;
            background: linear-gradient(125deg, #1B1631 0%, #5A39B0 48%, #8E5EE8 90%);
            background-size: 160% 160%;
            animation: ctaShift 10s ease infinite;
        }

        @keyframes ctaShift {
            0% {
                background-position: 0% 0%;
            }
            50% {
                background-position: 65% 45%;
            }
            100% {
                background-position: 0% 0%;
            }
        }

        .download-cta::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            top: 0;
            bottom: 0;
            background: radial-gradient(560px 260px at 90% 10%, rgba(255, 107, 61, 0.18), transparent 75%);
            pointer-events: none;
        }

        .download-inner {
            position: relative;
            z-index: 2;
            max-width: 840px;
            margin: 0 auto;
        }

        .download-inner h2 {
            font-size: clamp(26px, 4vw, 42px);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .download-inner p {
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 32px;
            font-size: 16px;
        }

        .download-btn-row {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 22px;
        }

        .btn-lg-ghost {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.38);
            color: #fff;
            height: 54px;
        }

        .btn-lg-ghost:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
            border-color: #fff;
        }

        .download-footnote {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.68);
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .dl-cert {
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 999px;
            padding: 5px 12px;
            background: rgba(255, 255, 255, 0.04);
        }

        .site-footer {
            background: var(--dark);
            color: #BEB5D2;
            margin-top: auto;
        }

        .footer-main {
            padding: 54px 0 34px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.2fr;
            gap: 50px;
        }

        .footer-brand-title {
            font-size: 21px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand-title span {
            color: #B9A5F3;
            margin-right: 8px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }

        .footer-links-title {
            font-size: 16px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: #C0B7D4;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: #FFB06A;
        }

        .footer-sub-text {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .subscribe-form {
            display: flex;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 999px;
            padding: 4px;
            max-width: 360px;
        }

        .subscribe-form input {
            flex: 1;
            background: transparent;
            border: 0;
            padding: 0 14px;
            color: #fff;
            font-size: 14px;
            min-width: 0;
        }

        .subscribe-form input::placeholder {
            color: #9B91B5;
        }

        .subscribe-form .btn-sub {
            background: var(--accent);
            color: #fff;
            border-radius: 999px;
            padding: 0 22px;
            height: 40px;
            font-size: 14px;
            font-weight: 700;
            white-space: nowrap;
            transition: background 0.3s ease;
        }

        .subscribe-form .btn-sub:hover {
            background: #FF7B4D;
        }

        .form-feedback {
            font-size: 13px;
            color: #C7AEF7;
            margin-top: 10px;
            min-height: 20px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 18px 0;
            text-align: center;
            font-size: 13px;
        }

        .back-top {
            margin-top: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #C9BAE8;
            font-weight: 600;
            font-size: 13px;
        }

        .back-top:hover {
            color: #fff;
        }

        .toast-tip {
            position: fixed;
            left: 50%;
            bottom: 36px;
            z-index: 1500;
            background: var(--dark);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: 16px;
            padding: 13px 20px;
            font-size: 14px;
            max-width: 90vw;
            text-align: center;
            box-shadow: 0 18px 44px rgba(0, 0, 0, 0.22);
            transform: translate(-50%, 70px);
            opacity: 0;
            visibility: hidden;
            transition: all 0.35s ease;
        }

        .toast-tip.show {
            opacity: 1;
            visibility: visible;
            transform: translate(-50%, 0);
        }

        @media (max-width: 1199px) {
            .sidebar {
                width: 240px;
            }

            .main-content {
                margin-left: 240px;
                width: calc(100% - 240px);
            }

            .content-shell {
                padding: 0 30px;
            }

            .hero-shell {
                grid-template-columns: 1rem 1fr;
            }
        }

        @media (max-width: 991px) {
            .sidebar {
                transform: translateX(-105%);
                transition: transform 0.32s ease;
                box-shadow: 12px 0 40px rgba(31, 16, 46, 0.18);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .sidebar-backdrop.show {
                opacity: 1;
                visibility: visible;
            }

            .main-content {
                margin-left: 0;
                width: 100%;
            }

            .topbar-mobile {
                position: sticky;
                top: 0;
                z-index: 300;
                display: flex;
                align-items: center;
                gap: 14px;
                padding: 13px 20px;
                background: rgba(252, 251, 255, 0.92);
                backdrop-filter: blur(12px);
                border-bottom: 1px solid var(--soft-line);
            }

            .mobile-menu-btn {
                width: 42px;
                height: 42px;
                border-radius: 12px;
                background: #F3EFF9;
                display: inline-flex;
                align-items: center;
                justify-content: center;
                flex: 0 0 auto;
                transition: background 0.25s ease;
            }

            .mobile-menu-btn:hover {
                background: #E8E0F4;
            }

            .mobile-menu-btn svg {
                width: 21px;
                height: 21px;
                stroke: var(--text);
            }

            .topbar-mobile .brand-mark {
                width: 34px;
                height: 34px;
                border-radius: 10px;
                font-size: 16px;
            }

            .topbar-mobile .brand-name {
                font-size: 16px;
            }

            .topbar-mobile .btn-xs {
                margin-left: auto;
                height: 38px;
                padding: 0 16px;
                font-size: 13px;
            }

            .content-shell {
                padding: 0 24px;
            }

            .hero-shell {
                display: flex;
                flex-direction: column;
            }

            .hero-content {
                padding-bottom: 24px;
            }

            .hero-visual {
                justify-content: center;
                margin-bottom: 50px;
            }

            .preview-panel {
                width: min(360px, 100%);
            }

            .guide-block,
            .carousel-wrap,
            .env-block {
                grid-template-columns: 1fr;
            }

            .guide-block {
                padding: 32px;
            }

            .carousel-wrap {
                display: block;
            }

            .carousel-stage {
                margin-bottom: 18px;
            }

            .latest-layout {
                display: flex;
                flex-direction: column;
            }

            .review-wall {
                grid-template-columns: 1fr 1fr;
            }

            .review-card:nth-child(2) {
                margin-top: 0;
            }

            .review-card:nth-child(3) {
                margin-top: 24px;
            }

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

        @media (max-width: 767px) {
            .page-section {
                padding: 60px 0;
            }

            .content-shell {
                padding: 0 18px;
            }

            .hero {
                border-radius: 0 0 20px 20px;
            }

            .guide-block {
                padding: 24px;
                gap: 28px;
            }

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

            .carousel-wrap {
                padding: 16px;
            }

            .feature-viewport {
                min-height: 260px;
            }

            .slide-copy h3 {
                font-size: 18px;
            }

            .env-panel {
                padding: 24px;
            }

            .review-wall {
                grid-template-columns: 1fr;
            }

            .review-card:nth-child(2),
            .review-card:nth-child(3) {
                margin-top: 0;
            }

            .section-head {
                display: block;
            }

            .section-sub {
                margin-top: 10px;
                font-size: 15px;
            }

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

            .download-cta {
                padding: 52px 18px;
                border-radius: 22px;
            }

            .download-btn-row {
                flex-direction: column;
                align-items: stretch;
            }

            .download-btn-row .btn {
                width: 100%;
            }
        }

        @media (max-width: 575px) {
            .hero-content {
                padding-top: 44px;
            }

            .hero h1 {
                font-size: 36px;
            }

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

            .hero-actions .btn {
                width: 100%;
            }

            .section-title {
                font-size: 25px;
            }

            .featured-card .featured-img {
                height: 200px;
            }

            .preview-frame img {
                height: 210px;
            }

            .subscribe-form {
                flex-direction: column;
                background: transparent;
                border: 0;
                gap: 10px;
                padding: 0;
            }

            .subscribe-form input {
                background: rgba(255, 255, 255, 0.1);
                border: 1px solid rgba(255, 255, 255, 0.16);
                height: 46px;
                padding: 0 16px;
                border-radius: 999px;
                width: 100%;
            }

            .subscribe-form .btn-sub {
                height: 44px;
                width: 100%;
            }
        }

/* roulang page: article */
:root {
    --primary: #6941E5;
    --primary-strong: #5B31D6;
    --primary-ink: #3E1FA6;
    --primary-mist: #F1EBFE;
    --accent: #FF6B3D;
    --accent-deep: #E8452C;
    --dark: #1B1631;
    --card: #FFFFFF;
    --bg: #F7F5FB;
    --aux: #F0ECF7;
    --success: #00B578;
    --warn: #F8B62A;
    --text: #191523;
    --soft: #5F5972;
    --border: #E0D7EC;
    --line: #E5DEF0;
    --radius-lg: 28px;
    --radius: 20px;
    --radius-sm: 14px;
    --shadow: 0 8px 30px rgba(28, 16, 55, 0.08);
    --shadow-hover: 0 16px 40px rgba(28, 16, 55, 0.14);
    --nav-w: 280px;
    --mobile-h: 68px;
    --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.8;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
}
a:hover, a:focus { color: var(--primary-strong); }
a:focus, button:focus, input:focus {
    outline: 3px solid rgba(105, 65, 229, 0.35);
    outline-offset: 2px;
}
ul, ol, p, h1, h2, h3, h4 { margin-top: 0; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.content-shell {
    max-width: 1240px;
    margin: 0 auto;
    padding-left: 32px;
    padding-right: 32px;
}

/* 页面骨架 */
.mobile-header {
    display: none;
}
.side-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--nav-w);
    height: 100vh;
    background: #FCFBFF;
    border-right: 1px solid var(--line);
    padding: 26px 20px 24px;
    display: flex;
    flex-direction: column;
    z-index: 1001;
    overflow-y: auto;
}
.side-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 0 6px;
}
.side-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}
.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, #6C48E8 0%, #1B1631 100%);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    letter-spacing: -0.02em;
    flex: 0 0 42px;
    box-shadow: 0 6px 18px rgba(105, 65, 229, 0.3);
}
.brand-name {
    font-weight: 800;
    font-size: 17px;
    color: var(--text);
    letter-spacing: 0.01em;
}
.mobile-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    color: #fff;
}
.side-close {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--soft);
    font-size: 24px;
    line-height: 1;
    align-items: center;
    justify-content: center;
}

.side-nav .nav-caption {
    font-size: 13px;
    color: var(--soft);
    letter-spacing: .06em;
    padding: 0 16px;
    margin-bottom: 12px;
}
.nav-list {
    list-style: none;
    margin: 0 0 26px;
    padding: 0;
}
.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 16px;
    color: var(--soft);
    font-weight: 600;
    margin-bottom: 4px;
    border: 1px solid transparent;
    position: relative;
}
.nav-link:hover {
    color: var(--primary);
    background: var(--bg);
}
.nav-link.active {
    background: var(--primary-mist);
    color: var(--primary-ink);
    border-color: rgba(105, 65, 229, 0.12);
}
.nav-link.active .nav-dot {
    background: var(--accent);
    box-shadow: 0 0 0 4px rgba(255, 107, 61, .15);
}
.nav-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #CBC2DE;
    flex: 0 0 8px;
    transition: background .2s ease, box-shadow .2s ease;
}
.side-safe {
    margin-top: auto;
    background: var(--primary-mist);
    border-radius: 18px;
    padding: 16px 18px;
}
.side-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
    color: var(--primary-ink);
}
.status-glyph {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 4px rgba(0, 181, 120, .12);
}
.side-version-note {
    margin: 10px 0 0;
    font-size: 12.5px;
    color: var(--soft);
    line-height: 1.6;
}

/* 右侧主内容 */
.main-area {
    margin-left: var(--nav-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 文章头部 */
.article-cover {
    position: relative;
    padding: 54px 0 112px;
    background:
        linear-gradient(140deg, rgba(27, 22, 49, .95) 0%, rgba(60, 39, 112, .9) 42%, rgba(105, 65, 229, .92) 100%),
        url("/assets/images/backpic/back-2.png") center / cover no-repeat;
    color: #fff;
    overflow: hidden;
}
.article-cover::after {
    content: "";
    position: absolute;
    width: 420px;
    height: 420px;
    right: -90px;
    top: -150px;
    border-radius: 50%;
    background: rgba(255, 107, 61, .18);
    filter: blur(20px);
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255,255,255,.62);
    padding-left: 6px;
    margin-bottom: 18px;
}
.breadcrumb a {
    color: rgba(255,255,255,.82);
}
.breadcrumb a:hover { color: #fff; }
.article-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.18);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 22px;
    color: #E9E2FF;
}
.article-kicker::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
}
.article-title {
    margin: 0 0 24px;
    font-weight: 800;
    font-size: clamp(30px, 4.4vw, 56px);
    line-height: 1.35;
    letter-spacing: -0.01em;
    max-width: 900px;
    color: #fff;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: auto;
}
.meta-pill {
    display: inline-flex;
    align-items: center;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 999px;
    padding: 7px 16px;
    font-size: 13.5px;
    color: rgba(255,255,255,.88);
}
.meta-pill strong { margin-right: 4px; font-weight: 400; }

/* 文章主体 */
.article-section {
    position: relative;
    z-index: 2;
    margin-top: -56px;
    padding-bottom: 72px;
    flex: 1;
}
.article-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 32px;
    align-items: start;
}
.article-main { min-width: 0; }
.article-paper {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: clamp(24px, 5vw, 60px);
}
.article-paper .entry-published {
    display: none;
}
.entry-eyebrow {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 20px;
    margin-bottom: 28px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
    color: var(--soft);
}
.entry-eyebrow .tag-solid {
    background: var(--primary-mist);
    color: var(--primary-ink);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 999px;
}
.entry-eyebrow span { white-space: nowrap; }

.entry-content {
    font-size: 17px;
    line-height: 2;
    color: var(--text);
    max-width: 100%;
}
.entry-content > *:last-child { margin-bottom: 0; }
.entry-content p { margin-bottom: 1.5em; }
.entry-content h2 {
    font-size: clamp(22px, 2.4vw, 30px);
    font-weight: 800;
    color: var(--primary-ink);
    margin: 2.2em 0 0.8em;
    line-height: 1.5;
    scroll-margin-top: 24px;
}
.entry-content h3 {
    font-size: clamp(18px, 2vw, 22px);
    font-weight: 700;
    margin: 2em 0 0.8em;
    line-height: 1.6;
    color: var(--text);
    scroll-margin-top: 24px;
}
.entry-content a {
    color: var(--primary);
    border-bottom: 1px solid rgba(105,65,229,.5);
}
.entry-content a:hover {
    border-bottom-color: var(--accent);
    color: var(--accent-deep);
}
.entry-content img {
    border-radius: 18px;
    box-shadow: var(--shadow);
    margin: 1.6em auto;
}
.entry-content ul,
.entry-content ol {
    margin: 0 0 1.5em;
    padding-left: 1.4em;
}
.entry-content li {
    margin-bottom: .5em;
    padding-left: .15em;
}
.entry-content blockquote {
    border-left: 4px solid var(--accent);
    background: #FFF5F1;
    border-radius: 0 18px 18px 0;
    margin: 1.8em 0;
    padding: 18px 24px;
    color: #6B3A2A;
}
.entry-content blockquote p { margin: 0; }
.entry-content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    margin: 1.6em 0;
    font-size: 15px;
}
.entry-content th {
    background: var(--primary-mist);
    color: var(--primary-ink);
    text-align: left;
    padding: 12px 16px;
    font-weight: 700;
}
.entry-content td {
    padding: 12px 16px;
    border-top: 1px solid var(--line);
    color: var(--text);
}
.entry-content td:first-child {
    border-left: 0;
}
.entry-content code {
    background: var(--aux);
    border-radius: 6px;
    padding: 2px 6px;
    font-size: .9em;
}

/* 文末导航 */
.post-directory {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 52px;
    padding-top: 34px;
    border-top: 1px solid var(--line);
}
.dir-item {
    background: #FBF9FE;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
.dir-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    border-color: rgba(105,65,229,.4);
}
.dir-label {
    font-size: 12.5px;
    letter-spacing: .06em;
    color: var(--soft);
    font-weight: 700;
}
.dir-title {
    font-weight: 700;
    color: var(--primary-ink);
    font-size: 16px;
    line-height: 1.6;
}
.dir-title:hover { color: var(--primary); }

/* 文章未找到 */
.post-empty {
    padding: 80px 24px;
    text-align: center;
}
.post-empty-sub {
    font-size: 16px;
    color: var(--soft);
}
.post-empty-code {
    font-size: 60px;
    font-weight: 800;
    color: var(--border);
    margin-bottom: 10px;
    line-height: 1;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 54px;
    padding: 0 28px;
    background: linear-gradient(100deg, #FF6B3D 0%, #E8452C 100%);
    color: #fff;
    font-weight: 700;
    border-radius: 999px;
    border: none;
    box-shadow: 0 8px 18px rgba(255, 107, 61, .3);
    gap: 8px;
    transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
}
.btn-primary i { font-style: normal; }
.btn-primary:hover {
    filter: brightness(1.05);
    box-shadow: 0 12px 26px rgba(255, 107, 61, .38);
    color: #fff;
    transform: translateY(-1px);
}
.btn-primary:active {
    transform: translateY(1px) scale(.99);
    box-shadow: inset 0 2px 8px rgba(0,0,0,.12), 0 6px 14px rgba(255,107,61,.22);
}
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 54px;
    padding: 0 28px;
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    border-radius: 999px;
    font-weight: 700;
}
.btn-secondary:hover {
    background: var(--primary-mist);
    color: var(--primary-ink);
}
.post-empty .btn-primary { margin-top: 22px; }

/* 右侧目录与下载卡 */
.article-aside {
    position: sticky;
    top: 28px;
    display: flex;
    flex-direction: column;
    gap: 22px;
}
.aside-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: var(--shadow);
    padding: 24px;
}
.aside-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--primary-ink);
    margin: 0 0 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: .02em;
}
.aside-title::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 4px;
    background: var(--accent);
    display: inline-block;
}
.toc-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--line);
}
.toc-list li {
    border-bottom: 1px solid var(--line);
}
.toc-list li:last-child { border-bottom: none; }
.toc-link {
    display: block;
    font-size: 14px;
    padding: 10px 2px;
    color: var(--soft);
    line-height: 1.6;
    transition: color .2s ease, padding-left .2s ease;
}
.toc-link:hover {
    color: var(--primary);
    padding-left: 6px;
}
.toc-link[data-level="3"] {
    padding-left: 18px;
    font-size: 13.5px;
}
.toc-link[data-level="3"]:hover {
    padding-left: 24px;
}
.aside-image-card .cover-caption { margin-top: 14px; }
.aside-image-card img {
    width: 100%;
    height: 152px;
    object-fit: cover;
    border-radius: 14px;
}
.aside-card strong {
    color: var(--text);
    font-size: 14.5px;
    display: block;
    margin: 14px 0 6px;
}
.aside-card p {
    color: var(--soft);
    font-size: 14px;
    line-height: 1.8;
    margin: 0 0 16px;
}
.aside-card .btn-primary {
    height: 46px;
    padding: 0 22px;
    font-size: 14px;
}

/* 页脚 */
.site-footer {
    background: var(--dark);
    color: rgba(255,255,255,.72);
    margin-top: auto;
}
.footer-main {
    padding: 66px 0 58px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.7fr .9fr 1.2fr;
    gap: 48px;
}
.footer-brand-title {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-weight: 800;
    font-size: 21px;
    margin-bottom: 14px;
}
.footer-brand-title span {
    font-size: 13px;
    font-weight: 800;
    color: var(--dark);
    background: linear-gradient(100deg, #FF6B3D, #FF9D66);
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9px;
}
.footer-desc {
    font-size: 15px;
    line-height: 1.9;
    color: rgba(255,255,255,.55);
    max-width: 420px;
    margin: 0;
}
.footer-links-title {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
}
.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    color: rgba(255,255,255,.6);
    font-size: 14.5px;
}
.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}
.footer-sub-text {
    font-size: 14px;
    color: rgba(255,255,255,.5);
    margin-bottom: 14px;
    line-height: 1.7;
}
.subscribe-form {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.subscribe-form input {
    flex: 1 1 200px;
    height: 48px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,.18);
    background: rgba(255,255,255,.06);
    color: #fff;
    padding: 0 18px;
    font-size: 14px;
}
.subscribe-form input::placeholder { color: rgba(255,255,255,.45); }
.btn-sub {
    height: 48px;
    padding: 0 22px;
    border-radius: 999px;
    background: linear-gradient(100deg, #FF6B3D, #E8452C);
    color: #fff;
    font-weight: 700;
    border: 0;
}
.btn-sub:hover { filter: brightness(1.05); }
.form-feedback {
    font-size: 14px;
    margin: 10px 0 0;
    color: var(--success);
    min-height: 6px;
}
.form-feedback.error {
    color: #FFB7A3;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 18px 0;
}
.footer-bottom .content-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.footer-bottom p {
    margin: 0;
    font-size: 13.5px;
    color: rgba(255,255,255,.5);
}
.back-top {
    color: rgba(255,255,255,.65);
    font-size: 14px;
}
.back-top:hover { color: var(--accent); }

/* 遮罩与响应式按钮 */
.drawer-mask {
    position: fixed;
    inset: 0;
    background: rgba(20, 14, 41, .42);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, visibility .3s ease;
}
.drawer-mask.show {
    opacity: 1;
    visibility: visible;
}

/* 响应式 */
@media (max-width: 1359px) {
    .article-grid {
        grid-template-columns: minmax(0, 1fr) 296px;
    }
}
@media (max-width: 1199px) {
    :root { --nav-w: 240px; }
    .side-panel { padding-left: 16px; padding-right: 16px; }
    .content-shell { padding-left: 24px; padding-right: 24px; }
    .article-cover { padding: 44px 0 104px; }
}
@media (max-width: 991px) {
    :root { --nav-w: 300px; }
    body { padding-top: var(--mobile-h); }
    .mobile-header {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--mobile-h);
        background: var(--dark);
        z-index: 1002;
    }
    .mobile-header-inner {
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 20px;
    }
    .mobile-burger {
        width: 44px;
        height: 44px;
        border-radius: 14px;
        background: rgba(255,255,255,.08);
        border: 1px solid rgba(255,255,255,.14);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 5px;
    }
    .mobile-burger span {
        display: block;
        width: 18px;
        height: 2px;
        background: #fff;
        border-radius: 4px;
    }
    .side-panel {
        transform: translateX(-105%);
        transition: transform .34s ease;
        width: min(86vw, 340px);
        border-radius: 0 22px 22px 0;
    }
    .side-panel.open {
        transform: translateX(0);
        box-shadow: 20px 0 50px rgba(12, 8, 28, .25);
    }
    .side-close {
        display: inline-flex;
    }
    .main-area {
        margin-left: 0;
    }
    .article-section {
        margin-top: -34px;
    }
    .article-grid {
        grid-template-columns: 1fr;
    }
    .article-aside {
        position: static;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 18px;
        align-items: start;
    }
    .content-shell {
        padding-left: 18px;
        padding-right: 18px;
    }
    .article-paper {
        padding: 28px 24px;
    }
    .article-cover {
        padding: 34px 0 88px;
    }
}
@media (max-width: 767px) {
    .article-aside {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom .content-shell {
        flex-direction: column;
        text-align: center;
    }
    .post-directory {
        grid-template-columns: 1fr;
    }
    .article-paper {
        padding: 26px 18px;
        border-radius: 20px;
    }
    .article-title {
        font-size: 28px;
        line-height: 1.5;
    }
    .content-shell {
        padding-left: 14px;
        padding-right: 14px;
    }
    .article-section {
        margin-top: -22px;
        padding-bottom: 44px;
    }
    .entry-eyebrow {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}
@media (max-width: 575px) {
    .brand-name { font-size: 15.5px; }
    .mobile-logo strong { font-size: 15.5px; }
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .meta-pill {
        padding: 5px 12px;
        font-size: 12.5px;
    }
    .article-cover {
        padding-left: 6px;
        padding-right: 6px;
    }
    .article-cover .content-shell {
        padding-left: 16px;
        padding-right: 16px;
    }
    .btn-secondary {
        width: 100%;
    }
}

/* roulang page: category1 */
:root{
  --brand:#6941E5;
  --brand-2:#7A5AF0;
  --brand-dark:#1B1631;
  --orange:#FF6B3D;
  --orange-dark:#E8452C;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --soft:#F0ECF7;
  --safe:#00B578;
  --warn:#F8B62A;
  --text:#191523;
  --text-2:#5F5972;
  --line:#E5DEF0;
  --border:#E0D7EC;
  --r-card:20px;
  --r-large:28px;
  --shadow:0 8px 30px rgba(28,16,55,.08);
  --shadow-lg:0 18px 46px rgba(28,16,55,.14);
  --max:1320px;
  --side-w:280px;
}
*{box-sizing:border-box}
html{margin:0;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.category-page{background:var(--bg)}
body.is-locked{overflow:hidden}
a{color:inherit;text-decoration:none;transition:all .3s ease}
img{max-width:100%;display:block;border:0}
ul,ol,dl,dd,figure,p,h1,h2,h3,h4{margin:0}
button{font-family:inherit;border:0;cursor:pointer}
input,button,textarea{font-family:inherit}
:focus-visible{outline:4px solid rgba(105,65,229,.32);outline-offset:3px;border-radius:6px}
.skip-link{position:absolute;left:-999px;top:auto;z-index:999;background:#fff;color:var(--brand);padding:12px 20px;border-radius:12px}
.skip-link:focus{left:12px;top:12px}
.site-layout{display:block;min-height:100vh}
.content-shell{width:100%;max-width:var(--max);margin:0 auto;padding-left:clamp(24px,3vw,48px);padding-right:clamp(24px,3vw,48px)}

/* sidebar */
.site-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);background:#FCFBFF;
  border-right:1px solid var(--line);z-index:80;overflow-y:auto;
}
.side-inner{height:100%;display:flex;flex-direction:column;padding:32px 24px 24px}
.side-brand{
  padding:4px 4px 24px;border-bottom:1px solid var(--line);margin-bottom:18px;
}
.brand-link{display:flex;align-items:center;gap:12px;color:var(--text);font-weight:800;letter-spacing:.3px}
.brand-mark{
  width:42px;height:42px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-dark));color:#fff;font-size:17px;font-weight:900;
  box-shadow:0 8px 22px rgba(105,65,229,.28);flex:0 0 auto;letter-spacing:-1px;
}
.brand-name{font-size:17px;line-height:22px;white-space:nowrap}
.brand-tag{margin-top:12px;color:var(--text-2);font-size:13px;padding-left:2px}
.mobile-brand .brand-name,.side-brand .brand-name{color:var(--text);white-space:nowrap}
.nav-caption{
  margin:0 12px 10px;color:var(--text-2);font-size:12px;text-transform:none;letter-spacing:1px;
}
.nav-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.nav-link{
  position:relative;display:flex;align-items:center;gap:12px;padding:13px 16px;
  border-radius:14px;color:var(--text-2);font-weight:600;font-size:15px;line-height:1.2;
}
.nav-link:hover{background:var(--soft);color:var(--text)}
.nav-link.active{
  background:#F1EBFE;color:var(--brand);font-weight:700;
}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:99px;background:var(--brand);
}
.nav-dot{width:8px;height:8px;border-radius:50%;background:#D4C7E7;flex:0 0 auto;transition:.3s}
.nav-link:hover .nav-dot{background:var(--brand)}
.nav-link.active .nav-dot{background:var(--brand);box-shadow:0 0 0 4px rgba(105,65,229,.12)}
.side-bottom{margin-top:auto;padding-top:26px}
.side-safe{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:16px;background:#fff;padding:11px 14px;margin-bottom:12px;
}
.side-safe-dot{width:8px;height:8px;border-radius:50%;background:var(--safe);box-shadow:0 0 0 4px rgba(0,181,120,.12);flex:0 0 auto}
.side-download,.btn,.btn-sub,.dl-btn,.read-more,.cta-btn{display:inline-flex;align-items:center;justify-content:center}
.anchor-btn{
  display:flex;width:100%;height:48px;border-radius:999px;background:linear-gradient(120deg,var(--orange),var(--orange-dark));
  color:#fff;font-weight:700;font-size:14px;padding:0 18px;gap:8px;
}
.anchor-btn:hover{background:linear-gradient(120deg,#FF8A66,#F25438);box-shadow:0 10px 24px rgba(255,107,61,.28)}
.side-version{margin-top:12px;font-size:12px;color:#8B86A0;text-align:center;line-height:1.6}

/* mobile header */
.mobile-header{display:none;position:sticky;top:0;z-index:90;background:#FCFBFF;border-bottom:1px solid var(--line);padding:12px 20px;height:60px}
.mobile-header .mobile-inner{max-width:var(--max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:36px}
.mobile-brand{display:inline-flex;align-items:center;gap:9px;font-weight:800}
.nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;background:transparent;width:42px;height:42px;padding:0 7px;border-radius:12px}
.nav-toggle span{display:block;height:2px;width:24px;border-radius:2px;background:var(--text);transition:.3s}
.nav-toggle:hover{background:var(--soft)}
.nav-toggle.nav-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.nav-open span:nth-child(2){opacity:0}
.nav-toggle.nav-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-mask{position:fixed;inset:0;background:rgba(22,12,40,.46);backdrop-filter:blur(2px);z-index:79;opacity:0;visibility:hidden;transition:.3s}
.nav-mask.show{opacity:1;visibility:visible}

/* page structure */
.page-main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column}
.page-content{
  flex:1;padding-top:clamp(28px,4vw,48px);padding-bottom:24px;
}
.mobile-header + .page-content{padding-top:24px}
.site-footer{margin-top:0}

/* section scaffolding */
.section-block{padding:clamp(64px,8vw,112px) 0}
.section-head{
  display:flex;gap:24px;align-items:flex-end;justify-content:space-between;
  margin-bottom:clamp(28px,4vw,48px);
}
.section-head h2,h2.styled-h2{font-size:clamp(28px,3.4vw,40px);line-height:1.25;font-weight:800;letter-spacing:.5px;margin-top:10px}
.kicker,.eyebrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:2px;
}
.kicker::before,.eyebrow::before{content:"";width:18px;height:2px;border-radius:9px;background:linear-gradient(90deg,var(--orange),var(--brand))}
.section-note{max-width:520px;color:var(--text-2);font-size:15px;line-height:1.8}

/* category hero */
.cat-hero{
  position:relative;overflow:hidden;border-radius:28px;min-height:420px;display:flex;align-items:center;
  background:linear-gradient(132deg,#1B1631 0%,#2B1F52 44%,#6941E5 115%);
  color:#fff;padding:clamp(36px,6vw,68px) clamp(28px,5vw,60px);
  box-shadow:var(--shadow-lg);margin-bottom:54px;
}
.cat-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28;filter:saturate(.8);
}
.cat-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#1B1631 0%,#231B42 35%,rgba(35,27,66,.55) 70%,rgba(105,65,229,.38) 100%)}
.cat-hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:minmax(0,1.65fr) minmax(280px,.75fr);gap:34px;align-items:end;color:#fff}
.crumbs{display:flex;align-items:center;gap:8px;color:#CBBDF3;font-size:13px;margin-bottom:22px;flex-wrap:wrap}
.crumbs a{color:#CBBDF3;font-weight:500}
.crumbs a:hover{color:#fff}
.crumbs .sep{opacity:.45}
.crumbs .current{color:#fff;font-weight:600}
.cat-hero h1{
  font-size:clamp(36px,4.6vw,56px);line-height:1.18;font-weight:800;margin:0 0 18px;letter-spacing:.6px;color:#fff;
}
.cat-hero h1 .nowrap{white-space:nowrap}
.cat-hero-copy>p{max-width:720px;color:rgba(255,255,255,.86);font-size:clamp(16px,1.6vw,18px);line-height:1.9}
.hero-topics{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.topic-chip{
  height:36px;padding:0 15px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.32);border-radius:999px;color:#fff;background:rgba(255,255,255,.08);
  font-size:13px;font-weight:600;backdrop-filter:blur(4px);
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;border-radius:999px;font-weight:700;font-size:15px;transition:.3s ease;
}
.btn.primary{background:linear-gradient(120deg,var(--orange),var(--orange-dark));color:#fff;box-shadow:0 12px 26px rgba(255,107,61,.3)}
.btn.primary:hover{background:linear-gradient(120deg,#FF8A66,#F2472C);transform:translateY(-2px);box-shadow:0 18px 34px rgba(255,107,61,.4)}
.btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn.ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.hero-side-info{display:flex;flex-direction:column;gap:14px}
.hero-side-card{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:20px;
  padding:20px 22px;backdrop-filter:blur(6px);transition:.3s;
}
.hero-side-card:hover{border-color:rgba(255,255,255,.32);background:rgba(255,255,255,.14)}
.info-label{font-size:12px;letter-spacing:1.5px;color:#FFE0D3;font-weight:700;margin-bottom:8px}
.hero-side-card p{font-size:14px;color:rgba(255,255,255,.88);line-height:1.8;margin:0}

/* what-section  */
.what-section{padding:clamp(16px,3vw,24px) 0 clamp(66px,8vw,112px)}
.what-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.4fr);gap:clamp(30px,5vw,76px);align-items:start}
.what-intro{position:sticky;top:36px;padding-top:12px}
.what-intro h2{font-size:clamp(28px,3.2vw,38px);line-height:1.28;font-weight:800;margin:14px 0 18px}
.what-intro>p{color:var(--text-2);font-size:16px;line-height:2;margin-bottom:20px}
.what-intro .inline-link{color:var(--brand);font-weight:700}
.what-intro .inline-link:hover{color:var(--orange-dark);text-decoration:underline;text-underline-offset:6px}
.what-points{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.point-card{
  background:var(--card);border:1px solid var(--border);border-radius:22px;padding:26px 24px;
  min-height:190px;box-shadow:var(--shadow);transition:.3s;
}
.point-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#CFBFF3}
.point-icon{
  width:46px;height:46px;border-radius:16px;background:#F1EBFE;color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;margin-bottom:16px;
}
.point-card h3{font-size:19px;font-weight:800;margin-bottom:8px}
.point-card p{color:var(--text-2);font-size:14px;line-height:1.85}
.point-card:nth-child(2) .point-icon{background:#FFEDE6;color:var(--orange)}
.point-card:nth-child(3) .point-icon{background:#E8F6F1;color:var(--safe)}
.point-card:nth-child(4) .point-icon{background:#FFF5D9;color:var(--warn)}

/* digest section */
.digest-section{
  background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:clamp(58px,7vw,100px) 0;
}
.digest-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:24px;align-items:stretch}
.digest-feature{
  background:#FCFBFF;border:1px solid var(--border);border-radius:var(--r-large);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  overflow:hidden;box-shadow:var(--shadow);transition:.35s;min-height:330px;
}
.digest-feature:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.digest-cover{position:relative;overflow:hidden;min-height:280px}
.digest-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.digest-feature:hover .digest-cover img{transform:scale(1.035)}
.digest-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 55%,rgba(27,22,49,.25));pointer-events:none}
.digest-body{
  padding:30px;display:flex;flex-direction:column;
}
.meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;justify-content:center;height:28px;padding:0 12px;border-radius:999px;
  background:#F1EBFE;color:var(--brand);font-size:12px;font-weight:700;white-space:nowrap;
}
.badge.orange{background:#FFEDE6;color:var(--orange)}
.badge.green{background:#E8F6F1;color:var(--safe)}
.badge.gold{background:#FFF5D9;color:#B77E00}
time{color:var(--text-2);font-size:13px}
.digest-body h3{font-size:clamp(20px,2vw,26px);font-weight:800;line-height:1.45;margin:0 0 12px}
.digest-body p{color:var(--text-2);font-size:15px;line-height:1.85;flex:1}
.read-more{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:700;font-size:14px;margin-top:21px;transition:.3s}
.read-more:hover{color:var(--orange-dark);gap:12px}
.digest-mini-list{display:flex;flex-direction:column;gap:14px}
.mini-item{
  background:#FCFBFF;border:1px solid var(--border);border-radius:20px;padding:22px 24px;
  display:block;transition:.3s;position:relative;overflow:hidden;flex:1;
}
.mini-item:hover{border-color:#CFBFF3;box-shadow:var(--shadow);background:#FCFBFF}
.mini-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--brand);opacity:0;transition:.3s}
.mini-item:hover::before{opacity:1}
.mini-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:10px}
.mini-title{font-weight:800;font-size:17px;line-height:1.5;color:var(--text);transition:.3s;margin-bottom:6px}
.mini-item:hover .mini-title{color:var(--brand)}
.mini-desc{color:var(--text-2);font-size:14px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.mini-link{color:var(--text-2);font-size:13px;transition:.3s;margin-top:8px}
.mini-item:hover .mini-link{color:var(--brand)}

/* channel intro wide */
.about-channel{padding:clamp(64px,8vw,112px) 0}
.channel-panel{
  position:relative;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:0;
  overflow:hidden;background:linear-gradient(135deg,#241B45 0%,#3A2A72 50%,#5E45C4 130%);border-radius:30px;color:#fff;
  min-height:430px;align-items:stretch;box-shadow:0 20px 60px rgba(28,16,55,.22);
}
.channel-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;
  opacity:.22;pointer-events:none;
}
.channel-copy{position:relative;z-index:2;padding:clamp(30px,4vw,56px);align-self:center}
.channel-copy .kicker,.channel-copy .eyebrow{color:#FFC6B1}
.channel-copy h2{font-size:clamp(28px,3.5vw,42px);font-weight:800;line-height:1.24;margin:16px 0 18px;color:#fff}
.channel-copy>p{color:rgba(255,255,255,.84);font-size:16px;line-height:1.95;max-width:620px}
.channel-list{list-style:none;margin:26px 0 0;padding:0;display:flex;flex-direction:column;gap:13px}
.channel-list li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.9);font-size:14px;line-height:1.75}
.channel-list li::before{content:"";flex:0 0 auto;width:7px;height:7px;border-radius:50%;background:var(--orange);margin-top:9px;box-shadow:0 0 0 4px rgba(255,107,61,.2)}
.channel-visual{position:relative;z-index:2;min-height:260px;display:flex;align-items:center;justify-content:center;padding:28px}
.channel-card-img{
  width:86%;max-width:300px;border-radius:24px;overflow:hidden;border:4px solid rgba(255,255,255,.14);
  box-shadow:0 30px 70px rgba(0,0,0,.32);transform:rotate(3deg);margin-top:32px;
}
.channel-card-img img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/5}
.channel-visual .mini-badge-chip{
  position:absolute;left:8%;bottom:16%;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);
  border-radius:999px;padding:10px 16px;color:#fff;font-size:12px;backdrop-filter:blur(6px);display:flex;align-items:center;gap:8px;
}
.channel-visual .mini-badge-chip::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--safe)}

/* faq */
.faq-area{padding:clamp(56px,7vw,100px) 0;background:var(--card);border-top:1px solid var(--line)}
.faq-grid{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-card{
  background:#FCFBFF;border:1px solid var(--border);border-radius:20px;overflow:hidden;transition:.3s;box-shadow:0 4px 14px rgba(28,16,55,.04);
}
.faq-card:hover{border-color:#CDBDF1}
.faq-card[open]{box-shadow:var(--shadow)}
.faq-card summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;cursor:pointer;
  padding:22px 26px;font-size:17px;font-weight:700;color:var(--text);line-height:1.5;transition:.3s;
}
.faq-card summary::-webkit-details-marker{display:none}
.faq-card summary:hover{color:var(--brand)}
.faq-card[open] summary{color:var(--brand)}
.faq-icon{width:26px;height:26px;flex:0 0 auto;position:relative;border-radius:50%;background:#F1EBFE;transition:.3s}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:.3s}
.faq-icon::before{width:2px;height:10px;left:12px;top:8px}
.faq-icon::after{width:10px;height:2px;left:8px;top:12px}
.faq-card[open] .faq-icon{background:var(--brand)}
.faq-card[open] .faq-icon::before{background:#fff}
.faq-card[open] .faq-icon::after{background:#fff}
.faq-answer{padding:0 26px 26px;color:var(--text-2);font-size:16px;line-height:1.9;border-top:1px dashed var(--line);margin-top:2px}
.faq-answer p{margin:17px 0 0;max-width:760px}

/* CTA */
.cta-deep{padding:clamp(64px,8vw,110px) 0;background:linear-gradient(140deg,#1B1631 0%,#3A2370 84%,#6941E5 130%);position:relative;color:#fff;overflow:hidden;border-radius:0}
.cta-deep::before{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:rgba(255,107,61,.22);filter:blur(90px)}
.cta-panel{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:30px;align-items:center}
.cta-panel h2{font-size:clamp(28px,3.6vw,42px);line-height:1.24;font-weight:800;margin:15px 0 15px;color:#fff}
.cta-desc{color:rgba(255,255,255,.85);max-width:540px;line-height:1.95}
.cta-list{display:flex;flex-direction:row;flex-wrap:wrap;justify-content:flex-end;gap:14px}
.dl-btn{
  flex:1 1 170px;min-height:86px;border-radius:20px;padding:14px 16px;gap:13px;text-align:left;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#fff;backdrop-filter:blur(6px);transition:.3s;align-items:center;
}
.dl-btn:hover{background:rgba(255,255,255,.18);transform:translateY(-3px);border-color:#fff}
.dl-btn.channel-dl:hover{border-color:var(--orange)}
.dl-ic{width:46px;height:46px;border-radius:14px;background:#fff;color:var(--brand);font-weight:900;display:flex;align-items:center;justify-content:center;letter-spacing:-1px;font-size:13px;flex:0 0 auto}
.dl-btn small{display:block;font-size:12px;color:#CEC1E8;font-weight:600;margin-top:2px}
.dl-btn b{font-size:15px;font-weight:700}
.cert-line{margin-top:22px;display:flex;justify-content:flex-end;align-items:center;gap:14px;color:#CDC5E4;font-size:13px}
.cert-line span{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.08);border-radius:999px;padding:6px 14px}
.cert-line span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--safe)}

/* footer styles */
.site-footer{background:var(--brand-dark);color:#D8D0EA;border-top:1px solid rgba(255,255,255,.06)}
.footer-main{padding:48px 0 26px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.1fr) .55fr minmax(320px,.9fr);gap:40px}
.footer-brand-title{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;margin-bottom:16px}
.footer-brand-title span{
  width:34px;height:34px;background:linear-gradient(135deg,var(--brand),var(--orange));color:#fff;border-radius:11px;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:900;
}
.footer-desc{font-size:14px;line-height:1.9;color:#B7ACC6;max-width:330px}
.footer-col .footer-links-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:17px}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-links a{color:#B9AFCD;font-size:14px}
.footer-links a:hover{color:#fff;padding-left:5px}
.footer-sub-text{color:#AFA3BE;font-size:13px;line-height:1.8;margin-bottom:16px}
.subscribe-form{display:flex;gap:10px;background:#fff;border-radius:999px;padding:6px;box-shadow:0 4px 18px rgba(0,0,0,.12)}
.subscribe-form input{
  flex:1;border:0;background:transparent;padding:0 14px;font-size:14px;color:var(--text);min-height:38px;border-radius:999px;
}
.subscribe-form input:focus{outline:none}
.btn-sub{
  flex:0 0 auto;height:40px;padding:0 20px;border-radius:999px;background:linear-gradient(120deg,var(--orange),var(--orange-dark));
  color:#fff;font-weight:700;font-size:14px;transition:.3s;
}
.btn-sub:hover{filter:brightness(1.06)}
.form-feedback{padding:0 4px;color:var(--safe);font-size:13px;min-height:18px;margin-top:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:20px 0;font-size:13px;}
.footer-bottom .content-shell{display:flex;align-items:center;justify-content:space-between;gap:16px;color:#9B8DAF}
.back-top{color:#AFA3BE;display:inline-flex;gap:5px;font-size:13px}
.back-top:hover{color:#fff;letter-spacing:.3px}

/* responsive */
@media (max-width:1299px){
  :root{--side-w:240px}
  .brand-name{font-size:15px}
  .hero-side-info{display:none}
  .cat-hero-inner{grid-template-columns:1fr}
  .what-grid{grid-template-columns:1fr;gap:24px}
  .what-intro{position:static}
  .channel-panel{grid-template-columns:1fr;min-height:auto}
  .channel-visual{display:none}
}

@media (max-width:991px){
  :root{--side-w:280px}
  .site-sidebar{transform:translateX(-108%);transition:transform .3s ease;width:280px}
  .site-sidebar.open{transform:translateX(0);box-shadow:0 0 60px rgba(0,0,0,.3)}
  .mobile-header{display:block}
  .nav-mask.show{opacity:1;visibility:visible}
  .page-main{margin-left:0}
  .brand-name{font-size:17px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .digest-grid{grid-template-columns:1fr}
  .digest-feature{grid-template-columns:1fr}
  .digest-cover{min-height:240px;max-height:320px}
  .cta-panel{grid-template-columns:1fr}
  .cta-list{justify-content:flex-start}
  .cert-line{justify-content:flex-start;flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .what-points{grid-template-columns:1fr}
}

@media (max-width:640px){
  .what-points{grid-template-columns:1fr}
  .digest-body{padding:22px}
  .hero-actions .btn{width:100%}
  .mini-item{padding:17px 18px}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
  .cta-list{flex-direction:column}
  .dl-btn{flex-basis:auto;width:100%}
  .faq-card summary{padding:18px 16px;font-size:15px}
  .faq-answer{padding:0 16px 20px}
  .channel-copy{padding:32px 22px}
  .footer-bottom .content-shell{flex-direction:column}
  .footer-bottom{text-align:center}
  .cat-hero{padding:30px 20px;min-height:0}
  .cat-hero h1{font-size:clamp(30px,7vw,42px)}
  .hero-actions{flex-direction:column}
  .btn{width:100%}
  .hero-topics .topic-chip{font-size:12px;height:32px}
}

/* base print */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root {
  --primary: #6941E5;
  --primary-deep: #4E2FCB;
  --primary-soft: #F1EBFE;
  --accent: #FF6B3D;
  --accent-deep: #E8452C;
  --ink: #191523;
  --ink-soft: #5F5972;
  --bg: #F7F5FB;
  --bg-soft: #F0ECF7;
  --card: #FFFFFF;
  --line: #E0D7EC;
  --line-strong: #E5DEF0;
  --success: #00B578;
  --warning: #F8B62A;
  --deep-bg: #1B1631;
  --shadow-sm: 0 8px 30px rgba(28, 16, 55, 0.08);
  --shadow-lg: 0 16px 40px rgba(28, 16, 55, 0.14);
  --radius: 20px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --font: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
}

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

p,
h1,
h2,
h3,
ul {
  margin-top: 0;
}

ul {
  padding-left: 0;
  list-style: none;
}

:focus-visible {
  outline: 4px solid rgba(105, 65, 229, 0.35);
  outline-offset: 2px;
  border-radius: 8px;
}

.content-shell {
  max-width: 1320px;
  margin: 0 auto;
  padding-left: clamp(20px, 4vw, 48px);
  padding-right: clamp(20px, 4vw, 48px);
  position: relative;
}

.btn-main,
.btn-outline,
.btn-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  border-radius: var(--radius-pill);
  padding: 0 32px;
  font-weight: 700;
  font-size: 16px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
}

.btn-main {
  background: linear-gradient(135deg, #FF6B3D 0%, #E8452C 100%);
  color: #FFFFFF;
  box-shadow: 0 12px 26px rgba(230, 72, 44, 0.24);
}

.btn-main:hover {
  background: linear-gradient(135deg, #FF805A 0%, #F05536 100%);
  transform: translateY(-1px);
  box-shadow: 0 16px 32px rgba(230, 72, 44, 0.28);
}

.btn-main:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.18);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.38);
  color: #FFFFFF;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.68);
}

.btn-light {
  background: #FFFFFF;
  border-color: var(--line);
  color: var(--primary);
}

.btn-light:hover {
  background: var(--primary-soft);
}

.btn-light:active,
.btn-outline:active {
  transform: scale(0.98);
}

.side-panel {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: #FCFBFF;
  border-right: 1px solid var(--line);
  padding: 30px 22px 26px;
  display: flex;
  flex-direction: column;
  z-index: 50;
  overflow-y: auto;
}

.brand-head {
  display: flex;
  align-items: center;
  padding: 0 8px 22px;
  border-bottom: 1px solid var(--line);
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}

.logo-mark {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--primary) 20%, var(--deep-bg) 100%);
  color: #FFFFFF;
  font-size: 17px;
  font-weight: 800;
  border-radius: 13px;
  letter-spacing: -0.5px;
}

.logo-text {
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
  white-space: nowrap;
}

.logo-text small {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-soft);
  margin-top: 1px;
  letter-spacing: 0.2px;
}

.side-nav-wrap {
  flex: 1;
  padding: 22px 0;
}

.nav-caption {
  font-size: 13px;
  color: #9A91AD;
  letter-spacing: 1.2px;
  padding: 0 14px;
  margin: 0 0 14px;
}

.nav-list {
  display: grid;
  gap: 8px;
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 16px;
  border-radius: 14px;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 16px;
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
  position: relative;
}

.nav-link .nav-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
  transition: opacity 0.25s ease, background 0.25s ease;
}

.nav-link:hover {
  background: #F6F2FC;
  color: var(--primary);
}

.nav-link.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  box-shadow: inset 4px 0 0 var(--primary);
}

.nav-link.active .nav-dot {
  opacity: 1;
}

.side-meta {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.side-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.badge-verified {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 181, 120, 0.1);
  color: var(--success);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
}

.ver-text {
  font-size: 12px;
  color: var(--ink-soft);
}

.site-main {
  margin-left: 280px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 45;
  height: 64px;
  background: rgba(252, 251, 255, 0.95);
  border-bottom: 1px solid var(--line-strong);
  padding: 0 16px;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(10px);
}

.mobile-topbar .brand-logo .logo-text {
  font-size: 16px;
}

.burger {
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.3s ease;
}

.burger:hover {
  background: var(--primary-soft);
}

.burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 4px;
  position: relative;
}

.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 4px;
}

.burger span::before {
  top: -6px;
}

.burger span::after {
  top: 6px;
}

.menu-mask {
  position: fixed;
  inset: 0;
  z-index: 49;
  background: rgba(20, 12, 36, 0.56);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.menu-mask.open {
  opacity: 1;
  visibility: visible;
}

.inner-hero {
  position: relative;
  background-color: var(--deep-bg);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  border-radius: 0 0 28px 28px;
  overflow: hidden;
  color: #FFFFFF;
  padding: 78px 0 84px;
}

.inner-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(27, 22, 49, 0.96) 0%, rgba(50, 34, 98, 0.86) 52%, rgba(105, 65, 229, 0.36) 100%);
  z-index: 1;
}

.inner-hero .content-shell {
  z-index: 2;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 18px;
}

.breadcrumb-nav a {
  color: rgba(255, 255, 255, 0.82);
}

.breadcrumb-nav a:hover {
  color: #FFFFFF;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #E6DDFF;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.hero-kicker i {
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 99px;
  display: inline-block;
}

.page-title {
  font-size: clamp(34px, 5.4vw, 58px);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 18px;
  color: #FFFFFF;
}

.page-title em {
  font-style: normal;
  color: #FFB59F;
}

.hero-lead {
  max-width: 720px;
  font-size: 18px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
  margin: 0 0 30px;
}

.hero-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0;
}

.hero-meta-row li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
}

.hero-meta-row strong {
  font-weight: 700;
  color: #FFFFFF;
}

.section-block {
  padding: 96px 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 34px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 8px;
  color: var(--ink);
}

.section-title span {
  color: var(--primary);
}

.section-desc {
  color: var(--ink-soft);
  font-size: 16px;
  margin: 0;
  max-width: 620px;
}

.feature-card {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  background: var(--card);
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.feature-photo {
  position: relative;
  min-height: 360px;
  overflow: hidden;
}

.feature-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.5s ease;
}

.feature-card:hover .feature-photo img {
  transform: scale(1.03);
}

.feature-photo .photo-tag {
  position: absolute;
  left: 20px;
  top: 20px;
  background: rgba(27, 22, 49, 0.68);
  color: #FFFFFF;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  z-index: 2;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.feature-body {
  padding: clamp(26px, 5vw, 48px);
  display: flex;
  flex-direction: column;
}

.feature-body h2 {
  font-size: clamp(23px, 3vw, 34px);
  line-height: 1.45;
  margin: 0 0 14px;
  color: var(--ink);
}

.feature-body p {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
  flex: 1;
  margin-bottom: 24px;
}

.feature-meta-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--line-strong);
  padding-top: 20px;
  margin-bottom: 22px;
}

.feature-meta-line .tag-item {
  display: inline-block;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 13px;
  border-radius: var(--radius-pill);
}

.feature-meta-line time {
  color: var(--ink-soft);
  font-size: 14px;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--primary);
}

.feature-link:hover {
  color: var(--accent-deep);
}

.news-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 34px;
}

.news-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  min-height: 270px;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}

.news-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 30px;
  bottom: 30px;
  width: 4px;
  border-radius: 0 99px 99px 0;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.news-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: #CFBFF0;
}

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

.news-card-top {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  margin-bottom: 16px;
}

.news-cat {
  background: #F5F1FB;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
}

.news-date {
  font-size: 13px;
  color: var(--ink-soft);
  white-space: nowrap;
}

.news-card h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.6;
  margin: 0 0 14px;
}

.news-card h3 a {
  color: var(--ink);
  transition: color 0.25s ease;
}

.news-card h3 a:hover {
  color: var(--primary);
}

.news-card p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 20px;
  flex: 1;
}

.news-card-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
}

.news-card-more:hover {
  color: var(--accent-deep);
}

.version-section {
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  padding: clamp(28px, 5vw, 56px);
}

.version-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 28px;
}

.version-item {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}

.version-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.version-no {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--deep-bg);
  color: #FFFFFF;
  font-weight: 800;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  letter-spacing: 0.2px;
}

.version-time {
  font-size: 13px;
  color: var(--ink-soft);
}

.version-item h3 {
  font-size: 20px;
  margin: 4px 0 10px;
}

.version-item p {
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0;
}

.platform-note {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: 44px;
  background: linear-gradient(135deg, #1B1631, #3B2D65 60%, #6941E5 130%);
  border-radius: var(--radius-lg);
  padding: clamp(28px, 5vw, 56px);
  color: #FFFFFF;
  align-items: center;
}

.platform-note .note-title {
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 800;
  margin-bottom: 16px;
}

.platform-note p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  margin-bottom: 20px;
}

.check-list {
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.94);
  line-height: 1.7;
}

.check-list li::before {
  content: "✓";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: #7CF0BE;
  font-size: 13px;
  flex: 0 0 20px;
  margin-top: 3px;
}

.note-aside {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: 26px;
}

.note-aside h3 {
  font-size: 20px;
  margin: 0 0 14px;
}

.note-aside ul {
  display: grid;
  gap: 10px;
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
}

.note-aside li {
  padding-left: 21px;
  position: relative;
}

.note-aside li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 800;
  font-size: 22px;
  line-height: 1;
}

.cta-panel {
  background: linear-gradient(120deg, #2A1B4F 0%, #1B1631 56%, #502C77 100%);
  border-radius: var(--radius-lg);
  padding: clamp(32px, 6vw, 66px);
  text-align: center;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}

.cta-panel::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  right: -130px;
  top: -180px;
  background: radial-gradient(circle, rgba(255, 107, 61, 0.24) 0%, rgba(255, 107, 61, 0) 68%);
}

.cta-panel h2 {
  font-size: clamp(26px, 4vw, 42px);
  margin: 0 0 14px;
  position: relative;
  z-index: 2;
}

.cta-panel p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 640px;
  margin: 0 auto 32px;
  font-size: 16px;
  position: relative;
  z-index: 2;
}

.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  position: relative;
  z-index: 2;
}

.site-footer {
  background: var(--deep-bg);
  color: #FFFFFF;
  margin-top: auto;
}

.footer-main {
  padding: 64px 0 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 1.1fr;
  gap: 52px;
}

.footer-brand-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
  margin: 0 0 14px;
}

.footer-brand-title span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--primary), var(--deep-bg));
  font-size: 14px;
}

.footer-desc {
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.62);
  max-width: 420px;
  margin: 0;
}

.footer-links-title {
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 18px;
}

.footer-links {
  display: grid;
  gap: 10px;
  margin: 0;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.25s ease, padding-left 0.25s ease;
}

.footer-links a:hover {
  color: #FFFFFF;
  padding-left: 4px;
}

.footer-sub-text {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 18px;
}

.subscribe-form {
  display: flex;
  gap: 10px;
  max-width: 430px;
}

.subscribe-form input {
  flex: 1;
  height: 48px;
  min-width: 0;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  padding: 0 18px;
  font-size: 15px;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.subscribe-form input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.subscribe-form input:focus {
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.12);
  outline: none;
}

.btn-sub {
  height: 48px;
  border-radius: 14px;
  background: var(--accent);
  border: 0;
  color: #FFFFFF;
  font-weight: 700;
  padding: 0 24px;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.2s ease;
}

.btn-sub:hover {
  background: #FF805A;
}

.form-feedback {
  font-size: 13px;
  color: #7CF0BE;
  margin: 10px 0 0;
  min-height: 18px;
}

.footer-bottom {
  padding: 24px 0;
}

.footer-bottom .content-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  margin: 0;
}

.back-top {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 7px 18px;
  border-radius: var(--radius-pill);
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.back-top:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.45);
}

@media (max-width: 1199px) {
  .side-panel {
    width: 240px;
  }

  .site-main {
    margin-left: 240px;
  }

  .news-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .version-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 991px) {
  .side-panel {
    transform: translateX(-105%);
    width: 300px;
    transition: transform 0.35s ease;
    box-shadow: 20px 0 60px rgba(20, 12, 40, 0.18);
  }

  .side-panel.open {
    transform: translateX(0);
  }

  .site-main {
    margin-left: 0;
  }

  .mobile-topbar {
    display: flex;
  }

  .inner-hero {
    padding: 58px 0 68px;
  }

  .section-block {
    padding: 64px 0;
  }

  .feature-card {
    grid-template-columns: 1fr;
  }

  .feature-photo {
    min-height: 280px;
  }

  .platform-note {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
}

@media (max-width: 575px) {
  .hero-meta-row {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-meta-row li {
    width: 100%;
  }

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

  .news-cards {
    grid-template-columns: 1fr;
  }

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

  .feature-body h2 {
    font-size: 22px;
  }

  .feature-photo {
    min-height: 220px;
  }

  .content-shell {
    padding-left: 20px;
    padding-right: 20px;
  }

  .subscribe-form {
    flex-direction: column;
  }

  .btn-sub {
    width: 100%;
  }

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