/* ===== 重置 & 变量 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary: #6c5ce7;
            --primary-light: #a29bfe;
            --primary-dark: #4a3db8;
            --primary-bg: #f4f0ff;
            --gray-100: #f1f5f9;
            --gray-200: #e2e8f0;
            --gray-300: #cbd5e1;
            --gray-400: #94a3b8;
            --gray-500: #64748b;
            --gray-600: #475569;
            --gray-700: #334155;
            --gray-800: #1e293b;
            --gray-900: #0f172a;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 48px rgba(108, 92, 231, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f8fafc;
            color: var(--gray-800);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* ===== 头部 ===== */
        .header {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow 0.3s;
        }

        .header.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
            flex-wrap: wrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            box-shadow: 0 4px 12px rgba(108, 92, 231, 0.30);
        }

        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--gray-900);
            letter-spacing: -0.5px;
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--gray-600);
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav a:hover {
            background: var(--gray-100);
            color: var(--gray-900);
        }

        .nav a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(108, 92, 231, 0.30);
        }

        .nav a.active:hover {
            background: var(--primary-dark);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 28px;
            color: var(--gray-700);
            cursor: pointer;
            padding: 4px;
        }

        /* ===== Hero ===== */
        .hero {
            padding: 60px 0 48px;
            text-align: center;
            background: linear-gradient(180deg, var(--primary-bg) 0%, #fff 100%);
            border-bottom: 1px solid var(--gray-200);
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--gray-900);
            letter-spacing: -1px;
            line-height: 1.2;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary), #a29bfe);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero .slogan {
            font-size: 20px;
            color: var(--gray-500);
            margin-top: 12px;
        }

        .hero .slogan em {
            font-style: normal;
            color: var(--primary);
            font-weight: 500;
        }

        .hero .search-box {
            max-width: 560px;
            margin: 28px auto 0;
            position: relative;
        }

        .hero .search-box input {
            width: 100%;
            padding: 16px 24px;
            padding-right: 56px;
            border: 2px solid var(--gray-200);
            border-radius: 60px;
            font-size: 16px;
            background: #fff;
            outline: none;
            transition: var(--transition);
            box-shadow: var(--shadow);
            min-height: 56px;
        }

        .hero .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 4px 24px rgba(108, 92, 231, 0.15);
        }

        .hero .search-box input::placeholder {
            color: var(--gray-400);
        }

        .hero .search-box .search-btn {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            border: none;
            border-radius: 40px;
            color: #fff;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            min-height: 44px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero .search-box .search-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-50%) scale(1.02);
        }

        .hero .search-box .search-btn:active {
            transform: translateY(-50%) scale(0.97);
        }

        .hero .tool-count {
            margin-top: 18px;
            font-size: 14px;
            color: var(--gray-400);
        }

        .hero .tool-count strong {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== 分类 ===== */
        .categories {
            padding: 32px 0 8px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .categories .cat-btn {
            padding: 8px 24px;
            border-radius: 30px;
            border: 1.5px solid var(--gray-200);
            background: transparent;
            font-size: 14px;
            font-weight: 500;
            color: var(--gray-600);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .categories .cat-btn:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: var(--primary-bg);
        }

        .categories .cat-btn.active {
            border-color: var(--primary);
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(108, 92, 231, 0.25);
        }

        /* ===== 功能入口（分享 & 许愿） ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin: 20px 0 28px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 22px 20px 18px;
            border: 1.5px solid var(--gray-200);
            box-shadow: var(--shadow);
            transition: var(--transition);
            cursor: pointer;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-decoration: none;
            color: inherit;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }

        .feature-card .feature-icon {
            font-size: 36px;
            margin-bottom: 8px;
        }

        .feature-card .feature-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--gray-900);
        }

        .feature-card .feature-desc {
            font-size: 14px;
            color: var(--gray-500);
            margin-top: 4px;
        }

        .feature-card .feature-action {
            margin-top: 12px;
            padding: 6px 20px;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .feature-card .feature-action:hover {
            background: var(--primary-dark);
        }

        .feature-card.share-card {
            border-color: #60a5fa;
            background: #f0f7ff;
        }

        .feature-card.wish-card {
            border-color: #f472b6;
            background: #fdf2f8;
        }

        /* ===== 热门工具 ===== */
        .tools-section {
            margin: 24px 0 24px;
        }

        .tools-label {
            font-size: 18px;
            font-weight: 600;
            color: var(--gray-900);
            letter-spacing: 2px;
            margin-bottom: 16px;
            text-align: center;
        }

        .tools-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .tool-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: #ffffff;
            border-radius: 24px;
            padding: 22px 8px 20px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 4px rgba(0, 0, 0, 0.02);
            transition: transform 0.25s ease, box-shadow 0.3s ease;
            cursor: pointer;
            border: 1px solid rgba(0, 0, 0, 0.03);
            min-height: 100px;
            user-select: none;
            -webkit-tap-highlight-color: transparent;
            text-decoration: none !important;
            color: inherit !important;
        }

        .tool-item:active {
            transform: scale(0.95);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }

        .tool-item img {
            width: 40px;
            height: 40px;
            object-fit: contain;
            display: block;
            margin-bottom: 8px;
        }

        .tool-item .tool-emoji {
            font-size: 36px;
            line-height: 1;
            margin-bottom: 8px;
        }

        .tool-name {
            font-size: 15px;
            color: #334155;
            font-weight: 500;
            text-align: center;
            line-height: 1.3;
            max-width: 100%;
            word-break: keep-all;
        }

        @media (hover: hover) {
            .tool-item:hover {
                transform: translateY(-4px);
                box-shadow: 0 12px 36px rgba(79, 106, 245, 0.12);
                border-color: rgba(79, 106, 245, 0.10);
            }
        }

        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--gray-400);
        }

        .empty-state .empty-icon {
            font-size: 48px;
            margin-bottom: 12px;
        }

        .empty-state .empty-text {
            font-size: 18px;
            font-weight: 500;
            color: var(--gray-600);
        }

        /* ===== 广告条 ===== */
        .ad-section {
            padding: 0 0 32px;
        }

        .ad-placeholder {
            background: #fff;
            border-radius: var(--radius);
            border: 2px dashed var(--gray-300);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
            min-height: 100px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .ad-placeholder:hover {
            border-color: var(--primary-light);
            background: var(--primary-bg);
        }

        .ad-placeholder .ad-label {
            font-size: 12px;
            font-weight: 500;
            color: var(--gray-400);
            background: var(--gray-100);
            padding: 2px 14px;
            border-radius: 30px;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .ad-placeholder .ad-content {
            font-size: 15px;
            color: var(--gray-500);
        }

        .ad-placeholder .ad-content strong {
            color: var(--gray-700);
        }

        .ad-placeholder .ad-icon {
            font-size: 32px;
            margin-bottom: 6px;
        }

        /* ===== 模态框 ===== */
        .modal-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            backdrop-filter: blur(4px);
            z-index: 200;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .modal-overlay.active {
            display: flex;
        }

        .modal-box {
            background: #fff;
            border-radius: 24px;
            max-width: 460px;
            width: 100%;
            padding: 32px 28px 28px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
            position: relative;
            animation: modalIn 0.3s ease;
        }

        @keyframes modalIn {
            from {
                opacity: 0;
                transform: scale(0.95) translateY(20px);
            }

            to {
                opacity: 1;
                transform: scale(1) translateY(0);
            }
        }

        .modal-close {
            position: absolute;
            top: 14px;
            right: 18px;
            font-size: 24px;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--gray-400);
            transition: var(--transition);
        }

        .modal-close:hover {
            color: var(--gray-700);
        }

        .modal-box h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 8px;
        }

        .modal-box p {
            color: var(--gray-500);
            font-size: 15px;
            margin-bottom: 20px;
        }

        .modal-box textarea,
        .modal-box input[type="text"] {
            width: 100%;
            padding: 12px 16px;
            border: 1.5px solid var(--gray-200);
            border-radius: 12px;
            font-size: 15px;
            font-family: inherit;
            outline: none;
            transition: var(--transition);
            min-height: 80px;
            resize: vertical;
        }

        .modal-box textarea:focus,
        .modal-box input[type="text"]:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.12);
        }

        .modal-box .modal-btn {
            margin-top: 16px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }

        .modal-box .modal-btn:hover {
            background: var(--primary-dark);
        }

        .modal-box .copy-area {
            display: flex;
            gap: 10px;
            align-items: center;
            margin: 12px 0;
        }

        .modal-box .copy-area input {
            flex: 1;
            padding: 10px 14px;
            border: 1.5px solid var(--gray-200);
            border-radius: 10px;
            font-size: 14px;
            background: var(--gray-100);
            color: var(--gray-700);
            min-height: 44px;
        }

        .modal-box .copy-area .copy-btn {
            padding: 10px 20px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .modal-box .copy-area .copy-btn:hover {
            background: var(--primary-dark);
        }

        .modal-box .share-tips {
            font-size: 13px;
            color: var(--gray-400);
            text-align: center;
            margin-top: 12px;
        }

        .modal-box .success-msg {
            color: #059669;
            font-weight: 500;
            text-align: center;
            margin-top: 12px;
        }

        /* ===== 底部 ===== */
        .footer {
            background: #fff;
            border-top: 1px solid var(--gray-200);
            padding: 40px 0 24px;
            margin-top: auto;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }

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

        .footer-brand p {
            color: var(--gray-500);
            font-size: 14px;
            line-height: 1.6;
            margin-top: 8px;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--gray-700);
            margin-bottom: 12px;
        }

        .footer-col a {
            display: block;
            color: var(--gray-500);
            text-decoration: none;
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid var(--gray-200);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--gray-400);
        }

        .footer-bottom .links {
            display: flex;
            gap: 20px;
        }

        .footer-bottom .links a {
            color: var(--gray-400);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-bottom .links a:hover {
            color: var(--primary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 820px) {
            .hero h1 {
                font-size: 32px;
            }

            .hero .slogan {
                font-size: 17px;
            }

            .tools-grid {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
                gap: 18px;
            }

            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }

            .logo-text {
                font-size: 19px;
            }

            .feature-row {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        @media (max-width: 600px) {
            .container {
                padding: 0 14px;
            }

            .menu-toggle {
                display: block;
            }

            .nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #fff;
                padding: 12px 0 8px;
                border-top: 1px solid var(--gray-200);
                gap: 4px;
            }

            .nav.open {
                display: flex;
            }

            .nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                text-align: center;
            }

            .nav a.active {
                background: var(--primary-bg);
                color: var(--primary);
                box-shadow: none;
            }

            .hero {
                padding: 40px 0 32px;
            }

            .hero h1 {
                font-size: 26px;
            }

            .hero .slogan {
                font-size: 15px;
            }

            .hero .search-box input {
                font-size: 15px;
                padding: 14px 18px;
                min-height: 48px;
            }

            .hero .search-box .search-btn {
                padding: 8px 16px;
                font-size: 14px;
                min-height: 38px;
                right: 6px;
            }

            .hero .search-box .search-btn .btn-label {
                display: none;
            }

            .categories {
                padding: 20px 0 4px;
                gap: 8px;
            }

            .categories .cat-btn {
                padding: 6px 16px;
                font-size: 13px;
            }

            .tools-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }

            .tool-item {
                padding: 14px 4px 12px;
                min-height: 72px;
                border-radius: 18px;
            }

            .tool-item img {
                width: 32px;
                height: 32px;
                margin-bottom: 4px;
            }

            .tool-item .tool-emoji {
                font-size: 28px;
                margin-bottom: 4px;
            }

            .tool-name {
                font-size: 12px;
            }



            .feature-row {
                grid-template-columns: 1fr;
                gap: 14px;
                margin: 16px 0 20px;
            }

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

            .ad-section {
                padding: 0 0 24px;
            }

            .ad-placeholder {
                padding: 20px 16px;
                min-height: 80px;
            }

            .ad-placeholder .ad-content {
                font-size: 13px;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-brand p {
                max-width: 100%;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .footer-bottom .links {
                gap: 14px;
                flex-wrap: wrap;
                justify-content: center;
            }

            .modal-box {
                padding: 24px 18px;
            }

            .modal-box .copy-area {
                flex-direction: column;
            }

            .modal-box .copy-area .copy-btn {
                width: 100%;
            }
        }

        @media (max-width: 400px) {
            .tools-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .tool-card {
                padding: 14px 12px 14px;
                min-height: 130px;
            }

            .tool-card .icon-wrap {
                width: 38px;
                height: 38px;
                font-size: 18px;
                margin-bottom: 8px;
            }

            .tool-card .tool-name {
                font-size: 14px;
            }

            .tool-card .tool-desc {
                font-size: 12px;
            }

            .hero h1 {
                font-size: 22px;
            }

            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 18px;
            }
        }