/* roulang page: index */
:root {
            --primary: #6FA3DC;
            --primary-dark: #2E5A88;
            --primary-light: #EAF2FA;
            --bg: #F7FAFC;
            --text: #1F3A5C;
            --text-sub: #5B6E82;
            --accent: #C0813C;
            --accent-light: #E8C9A6;
            --green: #4E8D7C;
            --green-light: #DCEBE6;
            --border: rgba(31, 58, 92, 0.18);
            --border-solid: #1F3A5C;
            --shadow: 0 24px 48px -24px rgba(31, 58, 92, 0.22);
            --shadow-hover: 0 30px 60px -24px rgba(31, 58, 92, 0.30);
            --radius-lg: 8px;
            --radius-md: 6px;
            --radius-sm: 4px;
            --font-mono: Consolas, "Courier New", monospace;
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --section-space: clamp(4rem, 8vw, 7rem);
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            padding-bottom: 64px;
        }
        @media (min-width: 992px) { body { padding-bottom: 0; } }
        img { max-width: 100%; display: block; }
        a { text-decoration: none; color: inherit; transition: color .2s; }
        a:hover { color: var(--primary-dark); }
        ul { list-style: none; }
        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container-custom { padding: 0 16px; } }
        .mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
        .pixel-label {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 13px;
            letter-spacing: 1px;
            padding: 4px 12px;
            border: 1.5px solid var(--border-solid);
            background: rgba(234, 242, 250, 0.7);
            color: var(--primary-dark);
            border-radius: 0 6px 0 6px;
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 30px;
        }
        .section-block { padding: var(--section-space) 0; }
        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(247, 250, 252, 0.96);
            backdrop-filter: blur(8px);
            border-bottom: 1.5px solid var(--border);
            box-shadow: 0 2px 16px rgba(31, 58, 92, 0.06);
        }
        .site-header .navbar-brand {
            font-weight: 800;
            font-size: 16px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: .3px;
        }
        .site-header .navbar-brand .brand-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            display: inline-block;
            box-shadow: 2px 2px 0 rgba(31, 58, 92, 0.25);
        }
        .site-header .nav-link {
            font-weight: 600;
            font-size: 14.5px;
            color: var(--text) !important;
            padding: 8px 14px !important;
            position: relative;
            border-radius: var(--radius-sm);
        }
        .site-header .nav-link:hover {
            color: var(--primary-dark) !important;
            background: var(--primary-light);
        }
        .site-header .nav-link.active {
            color: var(--accent) !important;
        }
        .site-header .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--accent);
            box-shadow: 1px 1px 0 rgba(31, 58, 92, 0.3);
        }
        .site-header .nav-cta {
            background: var(--text) !important;
            color: #fff !important;
            border-radius: var(--radius-md);
            padding: 8px 20px !important;
            box-shadow: 3px 3px 0 var(--accent);
            font-weight: 700;
            border: none;
            margin-left: 8px;
        }
        .site-header .nav-cta:hover {
            background: var(--primary-dark) !important;
            box-shadow: 2px 2px 0 var(--accent);
            transform: translateY(1px);
        }
        /* ===== Hero ===== */
        .hero {
            min-height: 640px;
            background: linear-gradient(rgba(247, 250, 252, 0.88), rgba(247, 250, 252, 0.76)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            display: flex;
            align-items: center;
            position: relative;
            border-bottom: 2px solid var(--border-solid);
        }
        .hero .container-custom {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
            padding-top: 60px;
            padding-bottom: 60px;
        }
        .hero h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 900;
            line-height: 1.25;
            color: var(--text);
            margin: 18px 0 16px;
            letter-spacing: .5px;
        }
        .hero .hero-sub {
            font-size: 17px;
            color: var(--text-sub);
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--primary-dark);
            background: rgba(234, 242, 250, 0.6);
            border: 1.5px dashed var(--primary-dark);
            padding: 4px 12px;
            border-radius: 0 6px 0 6px;
            letter-spacing: 1px;
        }
        .hero .btn-group-hero { display: flex; gap: 14px; flex-wrap: wrap; }
        .btn-pixel {
            display: inline-block;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            transition: all .18s ease;
            text-align: center;
            border: 1.5px solid var(--border-solid);
        }
        .btn-primary-custom {
            background: var(--text);
            color: #fff;
            border-color: var(--text);
            box-shadow: 4px 4px 0 var(--accent);
        }
        .btn-primary-custom:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 2px 2px 0 var(--accent);
            transform: translateY(1px);
        }
        .btn-primary-custom:active {
            box-shadow: none;
            transform: translateY(3px);
        }
        .btn-secondary-custom {
            background: transparent;
            color: var(--text);
            border-color: var(--border-solid);
            box-shadow: 3px 3px 0 rgba(31, 58, 92, 0.15);
        }
        .btn-secondary-custom:hover {
            background: var(--primary-light);
            box-shadow: 2px 2px 0 rgba(31, 58, 92, 0.2);
            transform: translateY(1px);
        }
        .btn-secondary-custom:active {
            box-shadow: none;
            transform: translateY(3px);
        }
        .hero .info-panel {
            background: #fff;
            border: 2px solid var(--border-solid);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 28px;
            position: relative;
        }
        .hero .info-panel::before {
            content: "";
            position: absolute;
            top: -1px;
            right: -1px;
            width: 12px;
            height: 12px;
            background: var(--accent);
            border-left: 1px solid var(--border-solid);
            border-bottom: 1px solid var(--border-solid);
        }
        .hero .info-panel h3 {
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero .info-panel .info-row {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
            color: var(--text-sub);
        }
        .hero .info-panel .info-row:last-of-type { border-bottom: none; }
        .hero .info-panel .info-row i {
            color: var(--primary);
            width: 18px;
            text-align: center;
            margin-top: 3px;
        }
        .hero .info-panel .info-row .label { font-weight: 700; color: var(--text); }
        .hero .info-panel .stars { color: var(--accent); font-size: 14px; letter-spacing: 2px; }
        .hero .info-panel .btn-pixel { margin-top: 16px; width: 100%; }
        .hero .hero-coord {
            position: absolute;
            left: 24px;
            bottom: 18px;
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--text-sub);
            background: rgba(255, 255, 255, 0.8);
            padding: 4px 10px;
            border: 1px solid var(--border);
            letter-spacing: .5px;
        }
        /* ===== 痛点区块 ===== */
        .pain-section { background: #fff; }
        .pain-grid {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 48px;
            align-items: center;
        }
        .pain-grid .pain-img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            border: 1.5px solid var(--border);
            overflow: hidden;
        }
        .pain-grid .pain-img img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
        .pain-list { display: flex; flex-direction: column; gap: 18px; }
        .pain-item {
            background: #fff;
            border: 1.5px solid rgba(47, 90, 136, 0.2);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 18px 20px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: var(--shadow-hover) .2s, transform .2s;
        }
        .pain-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .pain-item .pain-icon {
            width: 44px;
            height: 44px;
            border: 2px solid var(--border-solid);
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-family: var(--font-mono);
            color: var(--primary-dark);
            flex-shrink: 0;
        }
        .pain-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .pain-item p { font-size: 14px; color: var(--text-sub); margin: 0; line-height: 1.6; }
        .pain-item .pain-no {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--accent);
            margin-bottom: 4px;
        }
        /* ===== 解决方案 ===== */
        .solution-section { background: var(--bg); }
        .solution-wrap { max-width: 860px; margin: 0 auto; }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px 0;
            position: relative;
        }
        .step-item:not(:last-child)::after {
            content: "";
            position: absolute;
            left: 32px;
            top: 74px;
            bottom: -6px;
            width: 2px;
            background-image: repeating-linear-gradient(90deg, var(--border-solid) 0 2px, transparent 2px 8px);
        }
        .step-no {
            width: 64px;
            height: 64px;
            border: 2px solid var(--border-solid);
            background: var(--text);
            color: #fff;
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            box-shadow: 4px 4px 0 var(--accent);
            flex-shrink: 0;
            position: relative;
            z-index: 2;
        }
        .step-body {
            background: #fff;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 18px 22px;
            box-shadow: var(--shadow);
            flex: 1;
        }
        .step-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .step-body p { font-size: 14.5px; color: var(--text-sub); margin: 0; line-height: 1.65; }
        .tea-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            justify-content: center;
        }
        .tea-tag {
            font-size: 13px;
            font-weight: 600;
            font-family: var(--font-mono);
            padding: 6px 14px;
            border: 1.5px solid var(--border-solid);
            border-radius: var(--radius-sm);
            background: rgba(220, 235, 230, 0.5);
            color: var(--green);
            box-shadow: 2px 2px 0 rgba(31, 58, 92, 0.15);
        }
        /* ===== 成果统计 ===== */
        .result-section { background: var(--primary-light); border-top: 2px solid var(--border-solid); border-bottom: 2px solid var(--border-solid); }
        .result-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            border: 2px solid var(--border-solid);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: #fff;
        }
        .result-cell {
            padding: 40px 32px;
            text-align: center;
            position: relative;
            border-right: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .result-cell:nth-child(even) { border-right: none; }
        .result-cell:nth-child(3), .result-cell:nth-child(4) { border-bottom: none; }
        .result-cell .num {
            font-family: var(--font-mono);
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
            display: inline-block;
        }
        .result-cell .num::after {
            content: "px";
            font-size: 16px;
            font-weight: 600;
            color: var(--accent);
            margin-left: 2px;
            font-family: var(--font-mono);
        }
        .result-cell .unit {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            display: block;
            margin-top: 4px;
            font-family: var(--font-mono);
        }
        .result-cell .label {
            font-size: 15px;
            color: var(--text-sub);
            margin-top: 8px;
            font-weight: 600;
        }
        .result-cell .corner {
            position: absolute;
            top: 10px;
            right: 10px;
            width: 8px;
            height: 8px;
            background: var(--green);
            opacity: 0.4;
        }
        /* ===== 客户证言 ===== */
        .testimonial-section { background: #fff; }
        .testi-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 32px;
        }
        .testi-grid .testi-right {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .testi-card {
            background: #fff;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            position: relative;
            height: 100%;
        }
        .testi-card .quote-icon {
            width: 36px;
            height: 36px;
            background: var(--green);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            box-shadow: 2px 2px 0 rgba(31, 58, 92, 0.2);
        }
        .testi-card blockquote {
            font-size: 15.5px;
            color: var(--text);
            line-height: 1.8;
            margin: 0 0 16px;
            border: none;
            padding: 0;
        }
        .testi-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13.5px;
            color: var(--text-sub);
        }
        .testi-meta .name { font-weight: 700; color: var(--text); }
        .testi-meta .role { padding: 2px 8px; background: var(--green-light); border-radius: var(--radius-sm); font-size: 12px; color: var(--green); }
        /* ===== FAQ ===== */
        .faq-section { background: var(--bg); }
        .faq-wrap { max-width: 800px; margin: 0 auto; }
        .accordion-item {
            background: #fff;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: 0 12px 24px -12px rgba(31, 58, 92, 0.12);
        }
        .accordion-button {
            background: var(--text);
            color: #fff;
            font-weight: 700;
            font-size: 15.5px;
            padding: 18px 24px;
            border-radius: 0;
            box-shadow: none;
            border: none;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .accordion-button::after { display: none; }
        .accordion-button:not(.collapsed) {
            background: var(--accent);
            color: #fff;
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 2px var(--primary) !important;
            border: none;
            outline: none;
        }
        .accordion-button .faq-icon {
            width: 20px;
            height: 20px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 3px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 10px;
            font-family: var(--font-mono);
        }
        .accordion-body {
            background: #fff;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            padding: 20px 24px;
            border-top: 1px solid var(--border);
        }
        /* ===== CTA ===== */
        .cta-section {
            background: var(--text);
            color: #fff;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 40px),
                repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 40px);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 32px;
        }
        .cta-inner h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 8px;
        }
        .cta-inner p { color: rgba(255, 255, 255, 0.75); max-width: 480px; margin: 0; }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-cta-gold {
            background: var(--accent);
            color: var(--text);
            font-weight: 700;
            padding: 14px 36px;
            border: 2px solid #fff;
            box-shadow: 4px 4px 0 rgba(255, 255, 255, 0.4);
            border-radius: var(--radius-md);
            transition: all .18s;
            display: inline-block;
        }
        .btn-cta-gold:hover {
            background: #d4944a;
            box-shadow: 2px 2px 0 rgba(255, 255, 255, 0.4);
            transform: translateY(2px);
            color: var(--text);
        }
        .cta-links {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-links a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color .2s;
        }
        .cta-links a:hover { color: var(--accent); }
        .cta-links i { color: var(--accent); }
        /* ===== 最新资讯 ===== */
        .news-section { background: #fff; }
        .news-list-card {
            background: #fff;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        .news-item {
            display: flex;
            align-items: stretch;
            padding: 22px 24px;
            border-bottom: 1px solid var(--border);
            transition: background .2s, box-shadow .2s;
            position: relative;
            gap: 20px;
        }
        .news-item:last-child { border-bottom: none; }
        .news-item:hover {
            background: var(--primary-light);
            box-shadow: inset 4px 0 0 var(--accent);
        }
        .news-item:hover::after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--accent);
        }
        .news-thumb {
            width: 130px;
            min-height: 80px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            overflow: hidden;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
        }
        .news-thumb img { width: 100%; height: 100%; object-fit: cover; min-height: 80px; }
        .news-thumb.empty {
            background-image: repeating-linear-gradient(45deg, rgba(47, 90, 136, 0.08) 0 2px, transparent 2px 10px);
        }
        .news-body { flex: 1; min-width: 0; }
        .news-body h3 {
            font-size: 16.5px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            line-height: 1.6;
        }
        .news-meta {
            display: flex;
            gap: 14px;
            margin-top: 8px;
            font-size: 12.5px;
            color: var(--text-sub);
            align-items: center;
            flex-wrap: wrap;
        }
        .news-meta .cat {
            background: var(--green-light);
            color: var(--green);
            padding: 2px 8px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 12px;
        }
        .news-meta .time { font-family: var(--font-mono); font-size: 12px; }
        .news-arrow {
            display: flex;
            align-items: center;
            padding: 0 8px;
            color: var(--text-sub);
            font-size: 18px;
            flex-shrink: 0;
        }
        .news-item:hover .news-arrow { color: var(--accent); transform: translateX(4px); }
        .news-empty {
            padding: 48px 24px;
            text-align: center;
            color: var(--text-sub);
            font-size: 15px;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--text);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 24px;
            position: relative;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--primary), var(--green));
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 40px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer h4 .dot {
            width: 6px;
            height: 6px;
            background: var(--accent);
            display: inline-block;
        }
        .site-footer p { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, 0.6); }
        .site-footer ul li { margin-bottom: 10px; }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: color .2s, padding-left .2s;
        }
        .site-footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 24px;
            margin-top: 40px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
        }
        /* ===== 移动底部Tab ===== */
        .mobile-tabs {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(234, 242, 250, 0.95);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-solid);
            display: flex;
            align-items: stretch;
            z-index: 1050;
        }
        @media (min-width: 992px) { .mobile-tabs { display: none; } }
        .mobile-tabs .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-sub);
            transition: color .2s, background .2s;
            border: none;
            background: transparent;
            padding: 4px 0;
        }
        .mobile-tabs .tab-item i { font-size: 18px; }
        .mobile-tabs .tab-item.active {
            color: var(--accent);
            background: rgba(192, 129, 60, 0.08);
        }
        .mobile-tabs .tab-item.active::before {
            content: "";
            position: absolute;
            top: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
        }
        .mobile-tabs .tab-item { position: relative; }
        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .hero .container-custom { grid-template-columns: 1fr; padding-top: 40px; }
            .hero { min-height: auto; }
            .hero .info-panel { max-width: 420px; }
            .pain-grid { grid-template-columns: 1fr; }
            .pain-grid .pain-img { max-height: 260px; }
            .testi-grid { grid-template-columns: 1fr; }
            .news-item { flex-wrap: wrap; gap: 12px; }
            .news-thumb { width: 100%; height: auto; min-height: 0; max-height: 180px; }
            .news-thumb img { min-height: 0; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .cta-inner { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 767.98px) {
            .result-cell { padding: 24px 18px; }
            .result-grid { grid-template-columns: 1fr 1fr; }
            .step-item { gap: 12px; }
            .step-no { width: 48px; height: 48px; font-size: 15px; }
            .section-title { font-size: 1.5rem; }
            .news-item { padding: 16px; }
            .news-arrow { display: none; }
            .faq-button { font-size: 14px; padding: 14px 16px; }
            .hero .hero-sub { font-size: 15px; }
            .mobile-tabs .tab-item i { font-size: 16px; }
        }
        @media (max-width: 575.98px) {
            .container-custom { padding: 0 12px; }
            .hero h1 { font-size: 1.7rem; }
            .btn-pixel { padding: 10px 18px; font-size: 14px; }
            .cta-actions { flex-direction: column; align-items: stretch; width: 100%; }
            .cta-actions .btn-cta-gold { text-align: center; }
            .cta-links { justify-content: center; }
            .news-body h3 { font-size: 15px; }
            .footer-grid { grid-template-columns: 1fr; }
        }

/* roulang page: article */
:root {
            --primary: #6FA3DC;
            --primary-dark: #2E5A88;
            --primary-light: #EAF2FA;
            --bg: #F7FAFC;
            --text: #1F3A5C;
            --text-secondary: #5B6E82;
            --accent: #C0813C;
            --accent-light: #D9A05F;
            --green: #4E8D7C;
            --green-light: #DCEBE6;
            --border: rgba(31, 58, 92, 0.18);
            --border-strong: #1F3A5C;
            --shadow: 0 24px 48px -24px rgba(31, 58, 92, 0.22);
            --shadow-hover: 0 30px 60px -24px rgba(31, 58, 92, 0.30);
            --radius: 8px;
            --radius-btn: 6px;
            --radius-tag: 4px;
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-mono: Consolas, "Courier New", monospace;
            --section-gap: clamp(4rem, 8vw, 6.5rem);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-main);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        a:hover {
            color: var(--accent);
        }

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

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

        @media (max-width: 992px) {
            body {
                padding-bottom: 64px;
            }
        }

        @media (max-width: 576px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ---------- 顶部导航 ---------- */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 2px 12px rgba(31, 58, 92, 0.06);
        }

        .site-header .navbar {
            padding: 12px 0;
            background: #fff;
        }

        .site-header .navbar-brand {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text);
            letter-spacing: 0.01em;
            display: flex;
            align-items: center;
            gap: 10px;
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
        }

        .site-header .navbar-brand:hover {
            color: var(--primary-dark);
        }

        .site-header .brand-dot {
            width: 14px;
            height: 14px;
            background: var(--accent);
            display: inline-block;
            box-shadow: 3px 3px 0 var(--border-strong);
            flex-shrink: 0;
            border: 2px solid var(--border-strong);
        }

        .site-header .navbar-nav {
            gap: 2px;
        }

        .site-header .nav-link {
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text);
            padding: 8px 14px;
            border-radius: var(--radius-tag);
            position: relative;
        }

        .site-header .nav-link:hover {
            color: var(--primary-dark);
            background: var(--primary-light);
        }

        .site-header .nav-link.active {
            color: var(--primary-dark);
        }

        .site-header .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 3px;
            height: 3px;
            background: var(--accent);
            box-shadow: 1px 1px 0 var(--border-strong);
        }

        .site-header .nav-cta {
            background: var(--text);
            color: #fff !important;
            border-radius: var(--radius-btn);
            padding: 8px 18px;
            box-shadow: 3px 3px 0 var(--accent);
            margin-left: 8px;
        }

        .site-header .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff !important;
            box-shadow: 2px 2px 0 var(--accent);
            transform: translateY(1px);
        }

        .site-header .navbar-toggler {
            outline: none;
            box-shadow: none;
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(192, 129, 60, 0.35);
        }

        @media (max-width: 992px) {
            .site-header .navbar-collapse {
                background: #fff;
                border-radius: var(--radius);
                padding: 12px;
                margin-top: 10px;
                box-shadow: var(--shadow);
                border: 1px solid var(--border);
            }

            .site-header .nav-link.active::after {
                display: none;
            }

            .site-header .nav-link.active {
                background: var(--primary-light);
                color: var(--primary-dark);
            }

            .site-header .nav-cta {
                margin: 8px 0 0 0;
                text-align: center;
            }
        }

        /* ---------- 移动端底部 Tab ---------- */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(234, 242, 250, 0.92);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--border-strong);
            z-index: 1050;
            align-items: center;
            justify-content: space-around;
            padding: 6px 0 0;
        }

        .mobile-tab-bar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--text);
            width: 20%;
            border-radius: var(--radius-tag);
            padding: 6px 0;
            position: relative;
        }

        .mobile-tab-bar .tab-item i {
            font-size: 1.15rem;
            line-height: 1;
        }

        .mobile-tab-bar .tab-item:hover,
        .mobile-tab-bar .tab-item.active {
            color: var(--primary-dark);
        }

        .mobile-tab-bar .tab-item.active::before {
            content: "";
            position: absolute;
            top: -7px;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 3px;
            background: var(--accent);
            box-shadow: 1px 1px 0 var(--border-strong);
        }

        @media (max-width: 992px) {
            .mobile-tab-bar {
                display: flex;
            }
        }

        /* ---------- 面包屑 ---------- */
        .breadcrumb-bar {
            padding: 18px 0 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }

        .breadcrumb-nav a {
            color: var(--primary-dark);
            font-weight: 500;
        }

        .breadcrumb-nav a:hover {
            color: var(--accent);
        }

        .breadcrumb-nav .sep {
            font-family: var(--font-mono);
            color: var(--accent);
            font-weight: 700;
        }

        .breadcrumb-nav .current {
            color: var(--text-secondary);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ---------- 文章头部 ---------- */
        .article-hero {
            background: linear-gradient(rgba(247, 250, 252, 0.92), rgba(234, 242, 250, 0.88)), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-bottom: 2px solid var(--border-strong);
            padding: 36px 0 48px;
            position: relative;
        }

        .article-hero::before {
            content: "[ 长沙 · 品茶 ]";
            font-family: var(--font-mono);
            font-size: 0.78rem;
            color: var(--primary-dark);
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.7);
            padding: 3px 10px;
            position: absolute;
            top: 16px;
            right: 24px;
            letter-spacing: 0.08em;
        }

        .article-head {
            margin-top: 18px;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--text);
            color: #fff;
            border: 2px solid var(--border-strong);
            padding: 4px 14px;
            font-size: 0.82rem;
            font-weight: 600;
            border-radius: var(--radius-tag);
            box-shadow: 2px 2px 0 var(--accent);
        }

        .article-head h1 {
            font-size: clamp(1.7rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.35;
            color: var(--text);
            margin: 18px 0 14px;
            max-width: 860px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-top: 14px;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta i {
            color: var(--accent);
            font-size: 0.9rem;
        }

        /* ---------- 正文区 ---------- */
        .article-section {
            padding: var(--section-gap) 0;
        }

        .article-container {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
            font-size: 17px;
            line-height: 1.85;
            color: var(--text);
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: clamp(1.8rem, 4vw, 3rem);
        }

        .article-body h2 {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--text);
            margin: 2.2em 0 0.8em;
            padding-bottom: 0.5em;
            border-bottom: 2px solid var(--primary-light);
            position: relative;
        }

        .article-body h2::before {
            content: "";
            display: inline-block;
            width: 10px;
            height: 10px;
            background: var(--accent);
            margin-right: 10px;
            box-shadow: 2px 2px 0 var(--border-strong);
            vertical-align: middle;
        }

        .article-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin: 1.8em 0 0.6em;
        }

        .article-body p {
            margin: 1em 0;
            line-height: 1.85;
        }

        .article-body img {
            border-radius: var(--radius);
            margin: 1.5em 0;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .article-body blockquote {
            margin: 1.5em 0;
            padding: 18px 22px;
            background: var(--green-light);
            border-left: 4px solid var(--green);
            border-radius: 4px;
            color: var(--text);
            font-style: normal;
            position: relative;
        }

        .article-body blockquote p {
            margin: 0.5em 0;
        }

        .article-body ul,
        .article-body ol {
            margin: 1em 0;
            padding-left: 1.4em;
        }

        .article-body li {
            margin: 0.4em 0;
        }

        .article-body li::marker {
            color: var(--accent);
        }

        .article-body a {
            color: var(--primary-dark);
            border-bottom: 2px solid rgba(192, 129, 60, 0.5);
        }

        .article-body a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 0.92rem;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-body th {
            background: var(--primary-light);
            font-weight: 700;
            color: var(--text);
        }

        .article-body code {
            font-family: var(--font-mono);
            background: var(--primary-light);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 0.9em;
        }

        .article-body pre {
            background: var(--text);
            color: #e8edf2;
            padding: 18px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.5em 0;
        }

        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        @media (max-width: 768px) {
            .article-body {
                font-size: 16px;
                padding: 1.4rem 1.2rem;
            }

            .article-body h2 {
                font-size: 1.25rem;
            }

            .article-body h3 {
                font-size: 1.1rem;
            }
        }

        /* ---------- 空状态 ---------- */
        .empty-state {
            text-align: center;
            padding: 48px 24px;
            background: var(--primary-light);
            border: 2px dashed var(--primary);
            border-radius: var(--radius);
            margin: 0 auto;
            max-width: 760px;
        }

        .empty-state i {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .empty-state p {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        /* ---------- 返回入口 ---------- */
        .back-links {
            max-width: 760px;
            margin: 28px auto 0;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        .back-links .btn {
            padding: 10px 22px;
            font-size: 0.9rem;
            font-weight: 600;
        }

        /* ---------- 按钮 ---------- */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: all 0.25s ease;
            border: 2px solid transparent;
        }

        .btn-primary {
            background: var(--text);
            color: #fff;
            border-color: var(--text);
            box-shadow: 4px 4px 0 var(--accent);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 2px 2px 0 var(--accent);
            transform: translateY(1px);
        }

        .btn-primary:active {
            box-shadow: none;
            transform: translateY(4px);
        }

        .btn-outline-primary {
            background: transparent;
            color: var(--text);
            border-color: var(--border-strong);
            box-shadow: 2px 2px 0 rgba(31, 58, 92, 0.2);
        }

        .btn-outline-primary:hover,
        .btn-outline-primary:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--border-strong);
            box-shadow: 1px 1px 0 rgba(31, 58, 92, 0.2);
            transform: translateY(1px);
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ---------- 相关推荐 ---------- */
        .related-section {
            padding: 0 0 var(--section-gap);
        }

        .related-section .section-title {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
            position: relative;
            display: inline-block;
        }

        .related-section .section-title::after {
            content: "";
            display: block;
            width: 42px;
            height: 4px;
            background: var(--accent);
            margin-top: 8px;
            box-shadow: 2px 2px 0 var(--border-strong);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: start;
            margin-top: 36px;
        }

        .related-card {
            display: block;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            position: relative;
            height: 100%;
        }

        .related-card:hover,
        .related-card:focus {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            color: var(--text);
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.04);
        }

        .related-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--primary-light);
        }

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

        .pixel-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--text);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border: 1px solid var(--border-strong);
            box-shadow: 2px 2px 0 var(--accent);
            border-radius: 2px;
            z-index: 2;
        }

        .related-body {
            padding: 20px 22px 22px;
        }

        .related-body h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-body p {
            font-size: 0.86rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-meta {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-meta i {
            font-size: 0.75rem;
            transition: transform 0.25s ease;
        }

        .related-card:hover .related-meta i {
            transform: translateX(4px);
        }

        @media (max-width: 992px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ---------- CTA 区块 ---------- */
        .cta-section {
            background: var(--text);
            background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
            background-size: 32px 32px;
            padding: clamp(3rem, 6vw, 5rem) 0;
            border-top: 4px solid var(--accent);
            position: relative;
        }

        .cta-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
        }

        .cta-left h2 {
            color: #fff;
            font-size: clamp(1.5rem, 3.4vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 8px;
        }

        .cta-left p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1rem;
            max-width: 520px;
            margin: 0;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .cta-actions .btn-cta {
            background: var(--accent);
            color: var(--text);
            font-weight: 700;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            border: 2px solid #fff;
            box-shadow: 4px 4px 0 rgba(255, 255, 255, 0.35);
            transition: all 0.25s ease;
            font-size: 0.95rem;
        }

        .cta-actions .btn-cta:hover,
        .cta-actions .btn-cta:focus {
            background: #fff;
            box-shadow: 2px 2px 0 var(--accent);
            transform: translateY(1px);
            color: var(--text);
        }

        .cta-actions .cta-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
        }

        .cta-actions .cta-links a {
            color: rgba(255, 255, 255, 0.85);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-actions .cta-links a:hover {
            color: var(--accent-light);
        }

        .cta-actions .cta-links i {
            color: var(--accent-light);
            width: 16px;
        }

        @media (max-width: 768px) {
            .cta-wrap {
                flex-direction: column;
                align-items: flex-start;
                gap: 24px;
            }

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn-cta {
                width: 100%;
                text-align: center;
            }
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: var(--text);
            color: rgba(255, 255, 255, 0.75);
            padding: 52px 0 28px;
            position: relative;
            border-top: 4px solid var(--accent);
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: -4px;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent) 0 8%, #fff 8% 16%, var(--accent) 16% 24%, #fff 24% 32%, var(--accent) 32% 40%, #fff 40% 48%, var(--accent) 48% 56%, #fff 56% 64%, var(--accent) 64% 72%, #fff 72% 80%, var(--accent) 80% 88%, #fff 88% 100%);
            background-size: 40px 4px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .site-footer h4 .dot {
            width: 10px;
            height: 10px;
            background: var(--accent);
            display: inline-block;
            box-shadow: 2px 2px 0 rgba(255, 255, 255, 0.4);
        }

        .site-footer p {
            font-size: 0.86rem;
            line-height: 1.75;
            margin-bottom: 0;
            max-width: 360px;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .site-footer ul a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.86rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

        .site-footer ul a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .site-footer ul a i {
            color: var(--accent-light);
            font-size: 0.82rem;
            width: 16px;
            text-align: center;
        }

        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
        }

        .footer-copy a {
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-copy a:hover {
            color: var(--accent-light);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* ---------- 通用区块标题 ---------- */
        .section-label {
            font-family: var(--font-mono);
            font-size: 0.78rem;
            letter-spacing: 0.1em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 6px;
            display: block;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }

        /* ---------- 滚动条 ---------- */
        ::-webkit-scrollbar {
            width: 10px;
            height: 10px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 5px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }

        /* ---------- 响应式细节 ---------- */
        @media (max-width: 576px) {
            .article-hero {
                padding: 28px 0 36px;
            }

            .article-head h1 {
                font-size: 1.4rem;
            }

            .article-meta {
                gap: 12px;
                font-size: 0.8rem;
            }

            .breadcrumb-nav {
                font-size: 0.8rem;
            }

            .breadcrumb-nav .current {
                max-width: 200px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #6FA3DC;
            --primary-dark: #2E5A88;
            --primary-light: #EAF2FA;
            --bg: #F7FAFC;
            --text: #1F3A5C;
            --text-muted: #5B6E82;
            --gold: #C0813C;
            --green: #4E8D7C;
            --green-light: #DCEBE6;
            --border: rgba(31, 58, 92, 0.18);
            --border-dark: #1F3A5C;
            --shadow-card: 0 24px 48px -24px rgba(31, 58, 92, 0.22);
            --shadow-hover: 0 30px 60px -24px rgba(31, 58, 92, 0.30);
            --radius-card: 8px;
            --radius-btn: 6px;
            --radius-tag: 4px;
            --space-section: clamp(4rem, 8vw, 7rem);
            --font-mono: Consolas, "Courier New", monospace;
            --font-sans: -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-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: color .2s;
        }

        a:hover {
            color: var(--gold);
        }

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin: 0 0 0.5em;
        }

        p {
            margin: 0 0 1em;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 768px) {
            .container-custom {
                padding: 0 24px;
            }
        }

        .section-block {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-tag {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-dark);
            background: #fff;
            border: 2px solid var(--border-dark);
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            box-shadow: 3px 3px 0 var(--gold);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 24px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            margin-bottom: 2rem;
        }

        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--text);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 30px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--text);
            box-shadow: 4px 4px 0 var(--gold);
            transition: all .2s ease;
            cursor: pointer;
        }

        .btn-main:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 2px 2px 0 var(--gold);
            transform: translate(2px, 2px);
        }

        .btn-main:active {
            box-shadow: none;
            transform: translate(4px, 4px);
        }

        .btn-main:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 3px;
        }

        .btn-sub {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text);
            font-weight: 700;
            font-size: 15px;
            padding: 12px 30px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--border-dark);
            box-shadow: 3px 3px 0 var(--primary);
            transition: all .2s ease;
            cursor: pointer;
        }

        .btn-sub:hover {
            background: var(--primary-light);
            color: var(--text);
            box-shadow: 1px 1px 0 var(--primary);
            transform: translate(2px, 2px);
        }

        .btn-sub:active {
            box-shadow: none;
            transform: translate(3px, 3px);
        }

        .btn-sub:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 3px;
        }

        .coord-tag {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-dark);
            background: #fff;
            border: 2px solid var(--border-dark);
            padding: 4px 12px;
            box-shadow: 3px 3px 0 var(--gold);
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .pixel-num {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 12px;
            font-weight: 700;
            color: var(--green);
            background: var(--green-light);
            border: 1px solid var(--green);
            padding: 2px 8px;
            border-radius: 3px;
            margin-right: 10px;
            font-variant-numeric: tabular-nums;
            white-space: nowrap;
        }

        .img-frame {
            position: relative;
            border: 2px solid var(--border-dark);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            background: var(--primary-light);
        }

        .img-frame::after {
            content: "[ IMG ]";
            position: absolute;
            top: 12px;
            right: 12px;
            font-family: var(--font-mono);
            font-size: 11px;
            color: #fff;
            background: var(--text);
            padding: 2px 8px;
            border-radius: 3px;
            opacity: 0.85;
            letter-spacing: 1px;
        }

        .img-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 260px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
        }

        .site-header .navbar {
            min-height: 72px;
        }

        .site-header .navbar-brand {
            font-weight: 800;
            font-size: 17px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.3px;
        }

        .site-header .brand-dot {
            width: 12px;
            height: 12px;
            background: var(--gold);
            border: 2px solid var(--text);
            border-radius: 2px;
            box-shadow: 2px 2px 0 var(--primary);
            flex-shrink: 0;
        }

        .site-header .nav-link {
            font-weight: 600;
            font-size: 14px;
            color: var(--text);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            position: relative;
            transition: all .2s;
        }

        .site-header .nav-link:hover {
            color: var(--primary-dark);
            background: var(--primary-light);
        }

        .site-header .nav-link.active {
            color: var(--gold);
        }

        .site-header .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 3px;
            background: var(--gold);
            border-radius: 2px;
        }

        .site-header .nav-cta {
            background: var(--text);
            color: #fff !important;
            padding: 10px 22px;
            box-shadow: 3px 3px 0 var(--gold);
            margin-left: 6px;
        }

        .site-header .nav-cta:hover {
            background: var(--primary);
            color: #fff !important;
            box-shadow: 1px 1px 0 var(--gold);
            transform: translate(2px, 2px);
        }

        .site-header .navbar-toggler {
            box-shadow: none;
            padding: 6px 10px;
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--gold);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: clamp(4.5rem, 10vw, 8rem) 0;
            background: linear-gradient(rgba(247, 250, 252, 0.82), rgba(247, 250, 252, 0.88)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            border-bottom: 2px solid var(--border-dark);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 20px;
            right: 30px;
            width: 60px;
            height: 60px;
            background:
                linear-gradient(45deg, transparent 48%, var(--gold) 48%, var(--gold) 52%, transparent 52%),
                linear-gradient(-45deg, transparent 48%, var(--gold) 48%, var(--gold) 52%, transparent 52%);
            background-size: 12px 12px;
            opacity: 0.4;
            border: 2px solid var(--border-dark);
            border-radius: 6px;
        }

        .page-hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            font-weight: 900;
            margin: 12px 0 16px;
            color: var(--text);
        }

        .page-hero .lead {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 28px;
        }

        .page-hero .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* ===== Space Tips ===== */
        .space-tips {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .point-list {
            list-style: none;
            padding: 0;
            margin: 20px 0 0;
        }

        .point-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
            display: flex;
            align-items: flex-start;
            line-height: 1.6;
        }

        .point-list li:last-child {
            border-bottom: none;
        }

        .point-list .pixel-num {
            flex-shrink: 0;
            margin-top: 2px;
        }

        .space-tips h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
        }

        /* ===== Steps ===== */
        .tasting-steps {
            background: var(--bg);
        }

        .steps-timeline {
            position: relative;
            margin-top: 2rem;
            padding-left: 60px;
        }

        .steps-timeline::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 20px;
            bottom: 20px;
            width: 2px;
            background-image: radial-gradient(circle, rgba(31, 58, 92, 0.5) 1.5px, transparent 1.5px);
            background-size: 8px 10px;
            background-repeat: repeat-y;
        }

        .step-row {
            position: relative;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            margin-bottom: 28px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 26px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .2s, transform .2s;
        }

        .step-row:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .step-num {
            position: absolute;
            left: -45px;
            top: 22px;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 14px;
            color: #fff;
            background: var(--text);
            border: 2px solid var(--text);
            border-radius: 4px;
            box-shadow: 2px 2px 0 var(--gold);
            font-variant-numeric: tabular-nums;
        }

        .step-content h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 6px;
        }

        .step-content p {
            margin: 0;
            color: var(--text-muted);
            font-size: 15px;
        }

        .tea-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 2px dashed rgba(31, 58, 92, 0.15);
        }

        .tea-tags span {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--text);
            background: #fff;
            border: 2px solid var(--border-dark);
            border-radius: var(--radius-tag);
            padding: 6px 14px;
            box-shadow: 2px 2px 0 var(--primary);
        }

        /* ===== Tea Picks ===== */
        .tea-picks {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .tea-picks .img-frame {
            min-height: 320px;
        }

        .tea-pick-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .tea-pick-list li {
            display: flex;
            gap: 12px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
            align-items: flex-start;
        }

        .tea-pick-list li:last-child {
            border-bottom: none;
        }

        .tea-badge {
            flex-shrink: 0;
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 12px;
            font-weight: 700;
            color: var(--green);
            background: var(--green-light);
            border: 1px solid var(--green);
            border-radius: var(--radius-tag);
            padding: 2px 10px;
            margin-top: 3px;
        }

        .tea-pick-list li strong {
            display: block;
            font-size: 16px;
            margin-bottom: 2px;
        }

        .tea-pick-list li p {
            margin: 0;
            color: var(--text-muted);
            font-size: 14px;
        }

        .tea-picks .row+.row {
            margin-top: 2rem;
        }

        /* ===== Tips ===== */
        .tasting-tips {
            background: var(--bg);
        }

        .tips-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 2rem;
        }

        .tip-card {
            position: relative;
            background: #fff;
            border: 2px solid var(--border-dark);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .2s, transform .2s;
        }

        .tip-card::before {
            content: '';
            position: absolute;
            top: -2px;
            right: -2px;
            width: 16px;
            height: 16px;
            background: var(--gold);
            border: 2px solid var(--border-dark);
            border-radius: 0 0 0 6px;
        }

        .tip-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .tip-card h4 {
            font-size: 17px;
            font-weight: 800;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tip-card h4 .tip-dot {
            width: 8px;
            height: 8px;
            background: var(--green);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .tip-card p {
            margin: 0;
            color: var(--text-muted);
            font-size: 15px;
        }

        /* ===== FAQ ===== */
        .faq-block {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .faq-block .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: 0 8px 24px -16px rgba(31, 58, 92, 0.18);
        }

        .faq-block .accordion-button {
            background: var(--text);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            padding: 18px 24px;
            box-shadow: none;
            border-radius: 0 !important;
            position: relative;
            transition: background .2s;
        }

        .faq-block .accordion-button::after {
            filter: brightness(0) invert(1);
        }

        .faq-block .accordion-button:not(.collapsed) {
            background: var(--gold);
            color: var(--text);
        }

        .faq-block .accordion-button:not(.collapsed)::after {
            filter: brightness(0) invert(0);
            transform: rotate(-180deg);
        }

        .faq-block .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(192, 129, 60, 0.4);
        }

        .faq-block .accordion-button::before {
            content: '▮';
            margin-right: 10px;
            font-size: 12px;
            color: var(--gold);
        }

        .faq-block .accordion-button:not(.collapsed)::before {
            color: var(--text);
        }

        .faq-block .accordion-body {
            background: #fff;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            padding: 20px 24px;
        }

        /* ===== CTA ===== */
        .cta-block {
            position: relative;
            background:
                radial-gradient(circle, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                var(--text);
            background-size: 22px 22px;
            padding: var(--space-section) 0;
            color: #fff;
        }

        .cta-block h2 {
            color: #fff;
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            margin-bottom: 12px;
        }

        .cta-block .cta-desc {
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            max-width: 520px;
            margin-bottom: 24px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--gold);
            color: var(--text);
            font-weight: 800;
            font-size: 16px;
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            border: 2px solid #fff;
            box-shadow: 4px 4px 0 var(--primary);
            transition: all .2s;
        }

        .cta-btn:hover {
            background: #fff;
            color: var(--text);
            box-shadow: 2px 2px 0 var(--gold);
            transform: translate(2px, 2px);
        }

        .cta-btn:active {
            box-shadow: none;
            transform: translate(4px, 4px);
        }

        .cta-links {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 24px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
        }

        .cta-links a {
            color: rgba(255, 255, 255, 0.9);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-links a:hover {
            color: var(--gold);
        }

        .cta-block .coord-tag {
            background: transparent;
            color: var(--gold);
            border-color: rgba(255, 255, 255, 0.5);
            box-shadow: 3px 3px 0 var(--primary);
            margin-bottom: 20px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--text);
            color: rgba(255, 255, 255, 0.72);
            position: relative;
            padding-bottom: 70px;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--gold), var(--green), var(--primary));
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: clamp(2rem, 4vw, 4rem);
            padding: clamp(3rem, 6vw, 5rem) 0 2rem;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .site-footer h4 .dot {
            width: 8px;
            height: 8px;
            background: var(--gold);
            border-radius: 2px;
            box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.2);
        }

        .site-footer p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .site-footer ul a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: color .2s, padding-left .2s;
        }

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

        .site-footer .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            text-align: center;
        }

        /* ===== Bottom Tab Nav ===== */
        .bottom-tab-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            display: none;
            background: rgba(234, 242, 250, 0.94);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-dark);
            height: 64px;
            box-shadow: 0 -4px 16px rgba(31, 58, 92, 0.08);
        }

        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            color: var(--text-muted);
            font-size: 11px;
            font-weight: 600;
            text-decoration: none;
            transition: color .2s;
        }

        .tab-item i {
            font-size: 18px;
            margin-bottom: 1px;
        }

        .tab-item:hover {
            color: var(--primary-dark);
        }

        .tab-item.active {
            color: var(--gold);
        }

        .tab-item.active i {
            background: var(--text);
            color: #fff;
            padding: 5px 10px;
            border-radius: 4px;
            box-shadow: 2px 2px 0 var(--gold);
            font-size: 16px;
        }

        @media (min-width: 768px) {
            .faq-block .accordion-body {
                padding: 24px 32px;
            }
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: #fff;
                border: 1px solid var(--border);
                border-radius: var(--radius-card);
                padding: 16px;
                box-shadow: var(--shadow-card);
                margin-top: 8px;
            }

            .site-header .nav-link {
                padding: 10px 14px;
                border-radius: var(--radius-btn);
            }

            .site-header .nav-cta {
                margin: 6px 0 0;
                display: inline-block;
                text-align: center;
            }

            .site-header .nav-link.active::after {
                display: none;
            }

            .site-header .nav-link.active {
                background: var(--primary-light);
                color: var(--text);
            }

            .bottom-tab-nav {
                display: grid;
                grid-template-columns: repeat(5, 1fr);
            }

            body {
                padding-bottom: 64px;
            }

            .site-footer {
                padding-bottom: 80px;
            }

            .page-hero {
                text-align: center;
            }

            .page-hero .lead {
                margin-left: auto;
                margin-right: auto;
            }

            .page-hero .hero-buttons {
                justify-content: center;
            }

            .steps-timeline {
                padding-left: 50px;
            }

            .step-num {
                left: -38px;
            }
        }

        @media (max-width: 767.98px) {
            body {
                font-size: 15px;
            }

            .section-block {
                padding: 3.5rem 0;
            }

            .section-desc {
                font-size: 15px;
            }

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

            .steps-timeline {
                padding-left: 0;
            }

            .steps-timeline::before {
                display: none;
            }

            .step-row {
                flex-direction: column;
                padding: 20px;
                margin-bottom: 16px;
            }

            .step-num {
                position: static;
                width: 32px;
                height: 32px;
            }

            .cta-actions,
            .cta-links {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .cta-btn {
                width: 100%;
                justify-content: center;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .img-frame img {
                min-height: 200px;
            }

            .site-header .navbar-brand {
                font-size: 15px;
                line-height: 1.4;
            }

            .page-hero h1 {
                font-size: 2rem;
            }

            .page-hero .hero-buttons .btn-main,
            .page-hero .hero-buttons .btn-sub {
                width: auto;
            }
        }

        @media (max-width: 575.98px) {
            .container-custom {
                padding: 0 16px;
            }

            .site-header .navbar-brand {
                font-size: 14px;
            }

            .tea-picks .img-frame {
                margin-bottom: 1.5rem;
            }

            .tip-card {
                padding: 22px;
            }

            .page-hero {
                padding: 3.5rem 0;
            }
        }