:root {
            --bg-deep: #060b14;
            --surface-1: #0c1528;
            --surface-2: #111d35;
            --surface-3: #162544;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-glow: rgba(79, 172, 254, 0.25);
            --accent-primary: #00e5a0;
            --accent-secondary: #4facfe;
            --accent-warm: #ffb347;
            --accent-rose: #ff6b9d;
            --text-primary: #eef2f9;
            --text-secondary: #9aabc5;
            --text-tertiary: #5e6f89;
            --gradient-hero: linear-gradient(135deg, #00e5a0 0%, #4facfe 45%, #a78bfa 100%);
            --gradient-btn: linear-gradient(135deg, #00e5a0 0%, #4facfe 100%);
            --gradient-card-1: linear-gradient(160deg, rgba(0, 229, 160, 0.08) 0%, rgba(79, 172, 254, 0.06) 100%);
            --shadow-glow-green: 0 0 40px rgba(0, 229, 160, 0.12);
            --shadow-glow-blue: 0 0 40px rgba(79, 172, 254, 0.1);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            letter-spacing: 0.01em;
            background-image:
                radial-gradient(ellipse at 70% 8%, rgba(0, 229, 160, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 20% 40%, rgba(79, 172, 254, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 60% 75%, rgba(167, 139, 250, 0.04) 0%, transparent 50%);
            background-repeat: no-repeat;
            background-attachment: fixed;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-fast);
        }

        /* ========== HEADER (与首页一致) ========== */
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 6%;
            position: sticky;
            top: 0;
            background: rgba(6, 11, 20, 0.82);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            z-index: 200;
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-smooth);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 750;
            color: #ffffff;
            letter-spacing: -0.02em;
        }
        .logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--gradient-hero);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #060b14;
            font-weight: 800;
            box-shadow: var(--shadow-glow-green);
        }
        .logo .logo-dot {
            color: var(--accent-primary);
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.35;
            }
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
            align-items: center;
        }
        nav a {
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            letter-spacing: 0.02em;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }
        nav a.active,
        nav a:hover {
            color: #ffffff;
        }
        nav a.active::after,
        nav a:hover::after {
            width: 100%;
        }
        nav a.active {
            color: var(--accent-primary);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .btn-gh {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            padding: 8px 16px;
            border-radius: 22px;
            transition: all var(--transition-smooth);
            background: rgba(255, 255, 255, 0.02);
        }
        .btn-gh:hover {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.04);
            box-shadow: 0 0 18px rgba(79, 172, 254, 0.1);
        }
        .btn-gh svg {
            width: 15px;
            height: 15px;
        }
        .btn-header {
            background: var(--gradient-btn);
            color: #060b14;
            padding: 9px 22px;
            border-radius: 22px;
            font-size: 14px;
            font-weight: 650;
            letter-spacing: 0.02em;
            box-shadow: 0 4px 18px rgba(0, 229, 160, 0.2);
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-header:hover {
            box-shadow: 0 6px 28px rgba(0, 229, 160, 0.35);
            transform: translateY(-1px);
        }

        /* ========== MAIN CONTAINER ========== */
        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== FAQ HERO ========== */
        .faq-hero {
            text-align: center;
            padding: 48px 0 12px;
            position: relative;
        }
        .faq-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 160, 0.05) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .badge-dev {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 160, 0.07);
            color: var(--accent-primary);
            border: 1px solid rgba(0, 229, 160, 0.18);
            padding: 5px 16px;
            border-radius: 22px;
            font-size: 13px;
            font-weight: 550;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
            letter-spacing: 0.04em;
        }
        .badge-dev .dev-dot {
            width: 7px;
            height: 7px;
            background: var(--accent-primary);
            border-radius: 50%;
            animation: live-pulse 1.6s ease-in-out infinite;
            box-shadow: 0 0 8px var(--accent-primary);
        }
        @keyframes live-pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.35;
                transform: scale(1.8);
            }
        }
        .faq-hero h1 {
            font-size: clamp(28px, 4.2vw, 42px);
            margin-bottom: 14px;
            background: var(--gradient-hero);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.25;
            position: relative;
            z-index: 1;
        }
        .faq-hero .subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 660px;
            margin: 0 auto 6px;
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
            line-height: 1.7;
        }
        .faq-hero .version-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--text-tertiary);
            background: rgba(255, 255, 255, 0.03);
            padding: 3px 12px;
            border-radius: 14px;
            margin-top: 6px;
            position: relative;
            z-index: 1;
            letter-spacing: 0.04em;
            border: 1px solid var(--border-subtle);
        }

        /* ========== QUICK SEARCH / FILTER (创意板块) ========== */
        .filter-section {
            margin-bottom: 36px;
            position: relative;
            z-index: 1;
        }
        .filter-input-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--surface-1);
            border: 1px solid var(--border-subtle);
            border-radius: 30px;
            padding: 6px 6px 6px 20px;
            transition: all var(--transition-smooth);
            max-width: 560px;
            margin: 0 auto 16px;
        }
        .filter-input-wrap:focus-within {
            border-color: var(--accent-primary);
            box-shadow: 0 0 28px rgba(0, 229, 160, 0.08);
        }
        .filter-input-wrap input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-primary);
            font-size: 14px;
            letter-spacing: 0.02em;
            font-family: inherit;
        }
        .filter-input-wrap input::placeholder {
            color: var(--text-tertiary);
            letter-spacing: 0.03em;
        }
        .filter-input-wrap .search-icon {
            font-size: 18px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }
        .filter-input-wrap .btn-search {
            background: var(--gradient-btn);
            color: #060b14;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 13px;
            font-weight: 650;
            letter-spacing: 0.03em;
            cursor: pointer;
            border: none;
            white-space: nowrap;
            transition: all var(--transition-smooth);
            flex-shrink: 0;
        }
        .filter-input-wrap .btn-search:hover {
            box-shadow: 0 4px 22px rgba(0, 229, 160, 0.25);
        }
        .filter-tags {
            display: flex;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tag {
            padding: 7px 15px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            cursor: pointer;
            background: rgba(255, 255, 255, 0.025);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .filter-tag:hover,
        .filter-tag.active {
            background: var(--gradient-card-1);
            border-color: var(--accent-primary);
            color: #ffffff;
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.06);
        }

        /* ========== SDK STATUS CARDS (创意板块) ========== */
        .sdk-status-section {
            margin-bottom: 40px;
        }
        .sdk-status-section h2 {
            text-align: center;
            font-size: 22px;
            color: #ffffff;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 6px;
        }
        .sdk-status-section .sdk-sub {
            text-align: center;
            color: var(--text-secondary);
            font-size: 13px;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .sdk-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
        }
        .sdk-card {
            background: var(--surface-1);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 18px 14px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .sdk-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-blue);
            transform: translateY(-2px);
        }
        .sdk-card .sdk-icon {
            font-size: 28px;
            margin-bottom: 8px;
            display: block;
        }
        .sdk-card .sdk-name {
            font-size: 13px;
            font-weight: 650;
            color: #ffffff;
            letter-spacing: 0.02em;
            margin-bottom: 3px;
        }
        .sdk-card .sdk-ver {
            font-size: 11px;
            color: var(--accent-primary);
            font-family: 'SF Mono', 'JetBrains Mono', 'Consolas', monospace;
            letter-spacing: 0.03em;
            margin-bottom: 8px;
        }
        .sdk-card .sdk-status {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 10px;
            padding: 3px 10px;
            border-radius: 10px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .sdk-status.stable {
            background: rgba(0, 229, 160, 0.1);
            color: var(--accent-primary);
            border: 1px solid rgba(0, 229, 160, 0.2);
        }
        .sdk-status.beta {
            background: rgba(255, 179, 71, 0.1);
            color: var(--accent-warm);
            border: 1px solid rgba(255, 179, 71, 0.2);
        }
        .sdk-status .status-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: currentColor;
            flex-shrink: 0;
        }

        /* ========== FAQ CATEGORY SECTIONS ========== */
        .faq-category {
            margin-bottom: 14px;
            scroll-margin-top: 100px;
        }
        .faq-category .cat-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .faq-category .cat-icon {
            width: 40px;
            height: 40px;
            background: var(--gradient-card-1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }
        .faq-category .cat-title {
            font-size: 18px;
            color: #ffffff;
            font-weight: 700;
            letter-spacing: -0.01em;
        }
        .faq-category .cat-count {
            font-size: 11px;
            color: var(--text-tertiary);
            letter-spacing: 0.04em;
            margin-left: auto;
            background: rgba(255, 255, 255, 0.03);
            padding: 3px 10px;
            border-radius: 12px;
        }

        /* ========== FAQ ITEM (DETAILS / SUMMARY) ========== */
        .faq-item {
            background: var(--surface-1);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            margin-bottom: 8px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 18px rgba(79, 172, 254, 0.04);
        }
        .faq-item summary {
            padding: 17px 20px;
            font-size: 14.5px;
            font-weight: 600;
            color: #ffffff;
            cursor: pointer;
            letter-spacing: 0.02em;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.01);
            transition: background var(--transition-smooth);
            user-select: none;
        }
        .faq-item summary:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-item summary .q-marker {
            width: 26px;
            height: 26px;
            background: var(--gradient-btn);
            color: #060b14;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 800;
            flex-shrink: 0;
            letter-spacing: 0;
        }
        .faq-item summary .expand-icon {
            margin-left: auto;
            font-size: 14px;
            color: var(--accent-primary);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
            font-weight: 700;
        }
        .faq-item[open] summary .expand-icon {
            transform: rotate(45deg);
        }
        .faq-item[open] summary {
            background: rgba(0, 229, 160, 0.03);
            border-bottom: 1px solid var(--border-subtle);
        }
        .faq-item .faq-content {
            padding: 18px 20px 20px 58px;
            font-size: 13.5px;
            color: var(--text-secondary);
            letter-spacing: 0.02em;
            line-height: 1.75;
        }
        .faq-item .faq-content p {
            margin-bottom: 10px;
        }
        .faq-item .faq-content p:last-child {
            margin-bottom: 0;
        }
        .faq-item .faq-content ul,
        .faq-item .faq-content ol {
            margin-bottom: 10px;
            padding-left: 20px;
        }
        .faq-item .faq-content li {
            margin-bottom: 5px;
        }
        .faq-item .faq-content strong {
            color: var(--accent-primary);
            font-weight: 600;
        }
        .faq-item .faq-content .inline-code {
            background: rgba(0, 0, 0, 0.35);
            border: 1px solid var(--border-subtle);
            padding: 2px 8px;
            border-radius: 4px;
            font-family: 'SF Mono', 'JetBrains Mono', 'Consolas', monospace;
            font-size: 12px;
            color: var(--accent-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        /* ========== CODE SNIPPET CARD (创意板块) ========== */
        .code-showcase-section {
            margin-bottom: 40px;
        }
        .code-showcase-section h2 {
            text-align: center;
            font-size: 22px;
            color: #ffffff;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 6px;
        }
        .code-showcase-section .code-sub {
            text-align: center;
            color: var(--text-secondary);
            font-size: 13px;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .code-card {
            background: var(--surface-1);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .code-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-blue);
        }
        .code-card .code-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 18px;
            background: rgba(0, 0, 0, 0.25);
            border-bottom: 1px solid var(--border-subtle);
        }
        .code-card .code-lang {
            font-size: 12px;
            color: var(--accent-primary);
            font-weight: 600;
            letter-spacing: 0.04em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .code-card .code-lang .lang-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-primary);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--accent-primary);
        }
        .code-card .btn-copy {
            font-size: 11px;
            color: var(--text-tertiary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            padding: 5px 12px;
            border-radius: 14px;
            cursor: pointer;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            font-family: inherit;
        }
        .code-card .btn-copy:hover {
            color: #ffffff;
            border-color: var(--accent-primary);
            background: rgba(0, 229, 160, 0.06);
        }
        .code-card pre {
            padding: 18px 20px;
            margin: 0;
            background: #020510;
            font-family: 'SF Mono', 'JetBrains Mono', 'Consolas', monospace;
            font-size: 12.5px;
            color: #c9d1d9;
            letter-spacing: 0.02em;
            line-height: 1.8;
            overflow-x: auto;
            white-space: pre-wrap;
            word-break: break-all;
        }
        .code-card pre .hl-keyword {
            color: #ff7b72;
        }
        .code-card pre .hl-string {
            color: #a5d6ff;
        }
        .code-card pre .hl-comment {
            color: #5e6f89;
            font-style: italic;
        }
        .code-card pre .hl-func {
            color: #d2a8ff;
        }
        .code-card pre .hl-const {
            color: #79c0ff;
        }

        /* ========== ERROR CODE REFERENCE TABLE (创意板块) ========== */
        .error-ref-section {
            margin-bottom: 40px;
            background: var(--surface-1);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            overflow-x: auto;
        }
        .error-ref-section h2 {
            font-size: 20px;
            color: #ffffff;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 6px;
        }
        .error-ref-section .err-sub {
            color: var(--text-secondary);
            font-size: 13px;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .err-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 13px;
            letter-spacing: 0.02em;
            min-width: 580px;
        }
        .err-table th {
            text-align: left;
            padding: 10px 12px;
            color: var(--text-tertiary);
            font-weight: 500;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 10px;
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }
        .err-table td {
            padding: 10px 12px;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
            vertical-align: top;
            line-height: 1.5;
        }
        .err-table tr:last-child td {
            border-bottom: none;
        }
        .err-table .err-code {
            font-family: 'SF Mono', 'JetBrains Mono', 'Consolas', monospace;
            color: var(--accent-rose);
            font-weight: 600;
            font-size: 12px;
            white-space: nowrap;
        }
        .err-table .err-sev {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 8px;
            font-size: 10px;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .err-sev.critical {
            background: rgba(255, 107, 157, 0.12);
            color: var(--accent-rose);
        }
        .err-sev.warning {
            background: rgba(255, 179, 71, 0.1);
            color: var(--accent-warm);
        }
        .err-sev.info {
            background: rgba(79, 172, 254, 0.1);
            color: var(--accent-secondary);
        }

        /* ========== DEV RESOURCES (创意板块) ========== */
        .dev-resources-section {
            margin-bottom: 40px;
        }
        .dev-resources-section h2 {
            text-align: center;
            font-size: 22px;
            color: #ffffff;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }
        .resources-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
        }
        .resource-card {
            background: var(--surface-1);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            text-align: center;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .resource-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-blue);
            transform: translateY(-3px);
        }
        .resource-card .res-icon {
            font-size: 32px;
            margin-bottom: 10px;
            display: block;
        }
        .resource-card .res-title {
            font-size: 15px;
            font-weight: 650;
            color: #ffffff;
            letter-spacing: 0.02em;
            margin-bottom: 4px;
        }
        .resource-card .res-desc {
            font-size: 12px;
            color: var(--text-secondary);
            letter-spacing: 0.02em;
            line-height: 1.5;
        }
        .resource-card .res-link {
            display: inline-block;
            margin-top: 10px;
            font-size: 12px;
            color: var(--accent-primary);
            font-weight: 600;
            letter-spacing: 0.03em;
            transition: color var(--transition-fast);
        }
        .resource-card .res-link:hover {
            color: #ffffff;
        }

        /* ========== CTA BANNER ========== */
        .cta-banner-faq {
            background: var(--surface-2);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 38px 30px;
            text-align: center;
            margin-bottom: 50px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-glow-green);
        }
        .cta-banner-faq::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 229, 160, 0.04) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-banner-faq h2 {
            font-size: 22px;
            color: #ffffff;
            font-weight: 750;
            letter-spacing: -0.02em;
            margin-bottom: 6px;
            position: relative;
            z-index: 1;
        }
        .cta-banner-faq p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 18px;
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
        }
        .btn-primary {
            background: var(--gradient-btn);
            color: #060b14;
            padding: 13px 30px;
            border-radius: 28px;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 0.03em;
            box-shadow: 0 6px 24px rgba(0, 229, 160, 0.2);
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            position: relative;
            z-index: 1;
            cursor: pointer;
            border: none;
        }
        .btn-primary:hover {
            box-shadow: 0 10px 34px rgba(0, 229, 160, 0.38);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: #ffffff;
            padding: 13px 30px;
            border-radius: 28px;
            font-size: 15px;
            font-weight: 550;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            position: relative;
            z-index: 1;
            margin-left: 10px;
        }
        .btn-outline:hover {
            border-color: rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.04);
            box-shadow: 0 4px 20px rgba(255, 255, 255, 0.04);
        }

        /* ========== FOOTER (与首页一致) ========== */
        footer {
            background: #030810;
            border-top: 1px solid var(--border-subtle);
            padding: 50px 6% 30px;
            color: var(--text-secondary);
            font-size: 13.5px;
            letter-spacing: 0.02em;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
        }
        .footer-brand h3 {
            color: #ffffff;
            margin-bottom: 14px;
            font-size: 19px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: var(--text-tertiary);
        }
        .footer-col h4 {
            color: #ffffff;
            margin-bottom: 14px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 9px;
            color: var(--text-tertiary);
            transition: var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: var(--text-tertiary);
            letter-spacing: 0.03em;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .sdk-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .resources-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            header {
                padding: 14px 4%;
            }
            nav ul {
                display: none;
            }
            .faq-hero h1 {
                font-size: 24px;
            }
            .sdk-grid {
                grid-template-columns: 1fr 1fr;
            }
            .resources-grid {
                grid-template-columns: 1fr;
            }
            .faq-item .faq-content {
                padding: 14px 16px 16px 20px;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 13px;
            }
            .filter-input-wrap {
                flex-direction: column;
                gap: 8px;
                padding: 12px;
                border-radius: 20px;
            }
            .filter-input-wrap input {
                width: 100%;
                padding: 6px 0;
            }
            .filter-input-wrap .btn-search {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .cta-banner-faq .btn-outline {
                margin-left: 0;
                margin-top: 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
            .err-table {
                font-size: 11px;
            }
            .code-card pre {
                font-size: 11px;
            }
            .filter-tags {
                gap: 6px;
            }
            .filter-tag {
                padding: 5px 10px;
                font-size: 11px;
            }
        }
        @media (max-width: 480px) {
            .sdk-grid {
                grid-template-columns: 1fr;
            }
            .faq-hero h1 {
                font-size: 20px;
            }
        }