:root {
        --primary: #ea580c;
        --accent: #d97706;
        --bg: #fffbf5;
        --text: #1c1917;
        --border-color: #1c1917;
        --shadow: 6px 6px 0px 0px rgba(28, 25, 23, 1);
        --shadow-sm: 3px 3px 0px 0px rgba(28, 25, 23, 1);
    }

    * {
        border-radius: 0 !important;
    }

    body {
        background-color: var(--bg);
        color: var(--text);
        font-family: 'Inter', '思源黑体', 'Source Han Sans CN', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        background-image: radial-gradient(circle, rgba(28, 25, 23, 0.06) 1px, transparent 1px);
        background-size: 22px 22px;
        overflow-x: hidden;
    }

    h1, h2, h3, h4, h5, h6, .display-font {
        font-family: 'Source Han Serif SC', '思源宋体', 'Noto Serif SC', 'Songti SC', serif;
        font-weight: 900;
    }

    .navbar {
        background-color: var(--bg);
        border-bottom: 3px solid var(--border-color);
        padding: 0.75rem 0;
        z-index: 1030;
    }

    .navbar-brand {
        font-family: 'Source Han Serif SC', '思源宋体', serif;
        font-size: 1.75rem;
        font-weight: 900;
        color: var(--text) !important;
        letter-spacing: -0.02em;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .navbar-brand i {
        color: var(--primary);
        font-size: 1.5rem;
    }

    .nav-link {
        font-weight: 600;
        color: var(--text) !important;
        margin: 0 0.5rem;
        padding: 0.5rem 0.75rem !important;
        border: 2px solid transparent;
        transition: all 0.2s ease;
    }

    .nav-link:hover {
        border-color: var(--border-color);
        background-color: var(--primary);
        color: #fff !important;
        box-shadow: var(--shadow-sm);
    }

    .navbar-toggler {
        border: 2px solid var(--border-color);
        box-shadow: none !important;
    }

    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(28, 25, 23, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
    }

    .hero-section {
        padding: 5rem 0 4rem;
        border-bottom: 3px solid var(--border-color);
        background: linear-gradient(135deg, rgba(234, 88, 12, 0.05) 0%, rgba(217, 119, 6, 0.03) 100%);
    }

    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        justify-content: center;
        margin-bottom: 2.5rem;
    }

    .tag-item {
        display: inline-block;
        padding: 0.35rem 1rem;
        border: 2px solid var(--border-color);
        background-color: var(--bg);
        font-weight: 600;
        font-size: 0.9rem;
        box-shadow: var(--shadow-sm);
        transition: transform 0.2s ease, background-color 0.2s ease;
        animation: tagFloat 3s ease-in-out infinite;
    }

    .tag-item:nth-child(2n) { animation-delay: 0.5s; }
    .tag-item:nth-child(3n) { animation-delay: 1s; }
    .tag-item:nth-child(4n) { animation-delay: 1.5s; }
    .tag-item:nth-child(5n) { animation-delay: 2s; }
    .tag-item:nth-child(6n) { animation-delay: 2.5s; }

    @keyframes tagFloat {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-6px); }
    }

    .tag-item:hover {
        background-color: var(--primary);
        color: #fff;
    }

    .hero-title {
        font-size: clamp(3rem, 7vw, 4.5rem);
        font-weight: 900;
        line-height: 1.05;
        margin-bottom: 1.5rem;
        letter-spacing: -0.02em;
        text-align: center;
    }

    .hero-title .highlight {
        background-color: var(--primary);
        color: #fff;
        padding: 0 0.5rem;
        box-shadow: var(--shadow);
        display: inline-block;
    }

    .hero-subtitle {
        font-size: 1.2rem;
        max-width: 700px;
        margin: 0 auto 2.5rem;
        text-align: center;
        opacity: 0.9;
    }

    .btn-solid {
        background-color: var(--primary);
        color: #fff;
        border: 3px solid var(--border-color);
        padding: 0.75rem 2rem;
        font-weight: 700;
        box-shadow: var(--shadow);
        transition: all 0.15s ease;
        text-transform: uppercase;
        letter-spacing: 0.02em;
        display: inline-block;
    }

    .btn-solid:hover {
        transform: translate(3px, 3px);
        box-shadow: 3px 3px 0px 0px rgba(28, 25, 23, 1);
        color: #fff;
        background-color: var(--accent);
    }

    .section-padding {
        padding: 5rem 0;
    }

    .section-title {
        font-size: clamp(2rem, 4vw, 3rem);
        font-weight: 900;
        margin-bottom: 1rem;
        display: inline-block;
        border-bottom: 4px solid var(--primary);
        padding-bottom: 0.25rem;
    }

    .section-subtitle {
        font-size: 1.1rem;
        opacity: 0.8;
        margin-bottom: 3rem;
    }

    .article-content {
        font-size: 1.05rem;
        line-height: 1.9;
    }

    .article-content p {
        margin-bottom: 1.5rem;
    }

    .article-content strong {
        color: var(--primary);
        font-weight: 700;
    }

    .compare-table {
        border: 3px solid var(--border-color);
        box-shadow: var(--shadow);
        background: var(--bg);
    }

    .compare-table thead th {
        background-color: var(--primary);
        color: #fff;
        border-bottom: 3px solid var(--border-color);
        font-family: 'Source Han Serif SC', serif;
        font-weight: 700;
        padding: 1rem;
        font-size: 1.1rem;
        text-align: center;
    }

    .compare-table tbody td {
        border: 2px solid var(--border-color);
        padding: 1rem;
        vertical-align: middle;
        font-weight: 500;
    }

    .compare-table tbody td:first-child {
        font-weight: 700;
        background: rgba(234, 88, 12, 0.05);
    }

    .compare-table .fa-check {
        color: var(--primary);
        font-size: 1.2rem;
    }

    .compare-table .fa-times {
        color: #999;
        font-size: 1.2rem;
    }

    .accordion-item {
        background: var(--bg);
        border: 3px solid var(--border-color);
        margin-bottom: 1rem;
        box-shadow: var(--shadow-sm);
    }

    .accordion-button {
        font-family: 'Source Han Serif SC', serif;
        font-weight: 700;
        font-size: 1.1rem;
        background: var(--bg);
        color: var(--text);
        border: none;
        padding: 1.25rem 1.5rem;
    }

    .accordion-button:not(.collapsed) {
        background: var(--primary);
        color: #fff;
        box-shadow: none;
    }

    .accordion-button:focus {
        box-shadow: none;
    }

    .accordion-body {
        padding: 1.5rem;
        border-top: 2px solid var(--border-color);
        font-size: 1rem;
        line-height: 1.7;
    }

    .feature-box {
        border: 3px solid var(--border-color);
        padding: 2rem 1.5rem;
        background: var(--bg);
        box-shadow: var(--shadow);
        transition: transform 0.2s ease;
        height: 100%;
    }

    .feature-box:hover {
        transform: translate(-2px, -2px);
        box-shadow: 8px 8px 0px 0px rgba(28, 25, 23, 1);
    }

    .feature-icon {
        font-size: 2.5rem;
        color: var(--primary);
        margin-bottom: 1.25rem;
        display: block;
    }

    .feature-box h4 {
        font-weight: 800;
        margin-bottom: 0.75rem;
        font-size: 1.25rem;
    }

    .feature-box p {
        opacity: 0.85;
        font-size: 0.95rem;
        margin-bottom: 0;
        line-height: 1.6;
    }

    .cta-section {
        background: var(--primary);
        color: #fff;
        padding: 4rem 0;
        border-top: 3px solid var(--border-color);
        border-bottom: 3px solid var(--border-color);
    }

    .cta-section .btn-solid {
        background: #fff;
        color: var(--text);
        border-color: var(--text);
    }

    .cta-section .btn-solid:hover {
        background: var(--bg);
    }

    .friend-links {
        background: var(--bg);
        border-top: 3px solid var(--border-color);
        padding: 2.5rem 0;
    }

    .friend-links h3 {
        font-size: 1.25rem;
        font-weight: 700;
        margin-bottom: 1rem;
    }

    .footer {
        background: var(--text);
        color: #fff;
        padding: 3rem 0 1.5rem;
        border-top: 4px solid var(--primary);
    }

    .footer a {
        color: rgba(255, 255, 255, 0.7);
        text-decoration: none;
        font-weight: 500;
    }

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

    .footer h5 {
        font-weight: 700;
        margin-bottom: 1rem;
    }

    .footer .copyright {
        border-top: 1px solid rgba(255, 255, 255, 0.2);
        padding-top: 1.5rem;
        margin-top: 2rem;
        opacity: 0.8;
    }

    .back-to-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        width: 48px;
        height: 48px;
        background-color: var(--primary);
        color: #fff;
        border: 3px solid var(--border-color);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.25rem;
        cursor: pointer;
        box-shadow: var(--shadow);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }

    .back-to-top.visible {
        opacity: 1;
        visibility: visible;
    }

    .back-to-top:hover {
        background-color: var(--accent);
    }

    .fade-up {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .fade-up.visible {
        opacity: 1;
        transform: translateY(0);
    }

    .img-hover-zoom {
        overflow: hidden;
        border: 3px solid var(--border-color);
        position: relative;
        box-shadow: var(--shadow-sm);
    }

    .img-hover-zoom img {
        transition: transform 0.5s ease;
        display: block;
        width: 100%;
        height: auto;
    }

    .img-hover-zoom:hover img {
        transform: scale(1.08);
    }

    .img-hover-zoom .img-overlay {
        position: absolute;
        inset: 0;
        background: rgba(234, 88, 12, 0.8);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 1.1rem;
        opacity: 0;
        transition: opacity 0.3s ease;
        padding: 1rem;
        text-align: center;
    }

    .img-hover-zoom:hover .img-overlay {
        opacity: 1;
    }

    @media (max-width: 768px) {
        .hero-section {
            padding: 3rem 0;
        }
        
        .tag-cloud {
            gap: 0.4rem;
        }
        
        .tag-item {
            font-size: 0.8rem;
            padding: 0.25rem 0.75rem;
        }
        
        .section-padding {
            padding: 3.5rem 0;
        }
    }

/* --- 子页面追加 --- */
/* 注册页专属样式 */
        .register-hero {
            background: var(--bg);
            padding: 60px 0 40px;
            border-bottom: 3px solid var(--border-color);
        }
.register-hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
.register-hero p {
            font-size: 1.15rem;
            color: var(--text);
            opacity: 0.75;
            max-width: 640px;
        }
.register-box {
            background: #ffffff;
            border: 3px solid var(--border-color);
            border-radius: 0;
            box-shadow: var(--shadow);
            padding: 40px;
            margin: 50px 0;
            position: relative;
        }
.register-box::before {
            content: "FREE";
            position: absolute;
            top: -18px;
            right: 30px;
            background: var(--primary);
            color: #fff;
            font-weight: 900;
            font-size: 0.85rem;
            letter-spacing: 2px;
            padding: 4px 14px;
            border: 2px solid var(--border-color);
            transform: rotate(3deg);
        }
.form-control-custom {
            background: var(--bg);
            border: 2px solid var(--border-color);
            border-radius: 0;
            padding: 14px 16px;
            font-size: 1rem;
            color: var(--text);
            width: 100%;
            transition: all 0.3s ease;
            margin-bottom: 20px;
        }
.form-control-custom:focus {
            outline: none;
            background: #fff;
            box-shadow: 4px 4px 0px 0px rgba(28, 25, 23, 1);
            transform: translate(-2px, -2px);
        }
.form-control-custom::placeholder {
            color: rgba(28, 25, 23, 0.4);
        }
.form-label-custom {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text);
            margin-bottom: 8px;
            display: block;
        }
.register-btn {
            background: var(--primary);
            color: #fff;
            border: 3px solid var(--border-color);
            border-radius: 0;
            font-weight: 800;
            font-size: 1.1rem;
            padding: 14px 32px;
            width: 100%;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
            cursor: pointer;
        }
.register-btn:hover {
            background: var(--accent);
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px 0px rgba(28, 25, 23, 1);
        }
.register-benefit {
            padding: 20px;
            background: var(--bg);
            border: 2px solid var(--border-color);
            margin-bottom: 20px;
            transition: all 0.3s ease;
        }
.register-benefit:hover {
            transform: translate(-3px, -3px);
            box-shadow: var(--shadow-sm);
        }
.register-benefit i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
.register-benefit h5 {
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
            font-size: 1.1rem;
        }
.register-benefit p {
            color: var(--text);
            opacity: 0.7;
            font-size: 0.95rem;
            margin-bottom: 0;
            line-height: 1.6;
        }
.steps-section {
            background: var(--bg);
            padding: 60px 0;
            border-top: 3px solid var(--border-color);
        }
.step-item {
            text-align: center;
            padding: 30px 20px;
            position: relative;
        }
.step-number {
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            border: 3px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 900;
            margin: 0 auto 20px;
            box-shadow: var(--shadow-sm);
        }
.step-item h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
        }
.step-item p {
            color: var(--text);
            opacity: 0.7;
            line-height: 1.6;
        }
.login-tip {
            background: #fff;
            border: 3px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: 20px 30px;
            margin: 30px 0 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 15px;
        }
.login-tip span {
            font-weight: 700;
            color: var(--text);
        }
.btn-outline-custom {
            background: transparent;
            border: 3px solid var(--border-color);
            color: var(--text);
            font-weight: 700;
            padding: 10px 24px;
            transition: all 0.2s ease;
            display: inline-block;
            text-decoration: none;
        }
.btn-outline-custom:hover {
            background: var(--text);
            color: var(--bg);
            transform: translate(-2px, -2px);
            box-shadow: var(--shadow-sm);
        }
.agreement-text {
            font-size: 0.85rem;
            color: var(--text);
            opacity: 0.6;
            margin-top: 16px;
            line-height: 1.6;
        }
.agreement-text a {
            color: var(--primary);
            text-decoration: underline;
            font-weight: 600;
        }

/* --- 子页面追加 --- */
/* 确保任何 bootstrap 组件类被覆盖（本页尽量不用组件类，但以防万一） */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
        .form-control, .form-select, .accordion-item, .accordion-button, .accordion-body,
        .modal-content, .modal-header, .modal-body, .dropdown-menu, .dropdown-item,
        .list-group-item, .table, .btn-light, .btn-outline-* {
            background: var(--card-bg, #fffaf0) !important;
            color: var(--text) !important;
            border-color: var(--border-color) !important;
        }
/* 本页特别微调 */
        .about-hero {
            border-bottom: 3px solid var(--border-color);
            box-shadow: var(--shadow);
        }
.friend-links a {
            margin-right: 1.5rem;
            font-weight: 500;
            color: var(--text);
            text-decoration: underline wavy var(--accent);
        }
.friend-links a:hover {
            color: var(--primary);
        }
/* 确保导航高亮 */
        .navbar-nav .nav-link.active {
            font-weight: 800;
            text-decoration: underline 3px var(--primary);
            text-underline-offset: 6px;
        }
/* 表格覆盖（若用） */
        .table-custom td, .table-custom th {
            background: #fffdf7;
            border: 1px solid var(--border-color);
        }

/* --- 子页面追加 --- */
/* 本页专属样式 */
        .legal-content h2 {
            color: var(--primary);
            font-weight: 800;
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
            font-size: 1.5rem;
            position: relative;
            padding-left: 1rem;
            border-left: 4px solid var(--primary);
        }
.legal-content h3 {
            color: var(--text);
            font-weight: 700;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            font-size: 1.2rem;
        }
.legal-content p {
            line-height: 1.8;
            margin-bottom: 1rem;
            color: var(--text);
        }
.legal-content ul {
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
.legal-content li {
            line-height: 1.8;
            margin-bottom: 0.5rem;
            color: var(--text);
        }
.legal-highlight {
            background: var(--bg);
            border: 2px solid var(--border-color);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
.legal-highlight p:last-child {
            margin-bottom: 0;
        }
.notice-box {
            background: var(--bg);
            border: 2px dashed var(--primary);
            border-radius: 8px;
            padding: 1.2rem 1.5rem;
            margin: 2rem 0;
        }
.update-date {
            font-style: italic;
            color: var(--primary);
            font-weight: 600;
        }

/* --- 子页面追加 --- */
.guide-hero { background: var(--bg); border-bottom: 2px solid var(--border-color); padding: 80px 0 60px; }
.guide-card { background: var(--bg); border: 2px solid var(--border-color); box-shadow: var(--shadow-sm); padding: 24px; margin-bottom: 24px; transition: transform .2s, box-shadow .2s; }
.guide-card:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow); }
.guide-step { display: flex; gap: 16px; margin-bottom: 20px; }
.guide-tip { background: rgba(234, 88, 12, .06); border-left: 4px solid var(--primary); padding: 14px 18px; margin: 16px 0; }
.guide-tip i { color: var(--primary); margin-right: 8px; }
.device-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 16px 0; }
.device-tag { background: var(--bg); border: 2px solid var(--border-color); padding: 8px 14px; font-size: 14px; font-weight: 600; box-shadow: var(--shadow-sm); }
.device-tag i { color: var(--primary); margin-right: 6px; }
.shortcut-table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.shortcut-table th, .shortcut-table td { border: 2px solid var(--border-color); padding: 10px 14px; text-align: left; font-size: 15px; }
.shortcut-table th { background: rgba(234, 88, 12, .08); font-weight: 700; }
.shortcut-table td { background: var(--bg); }
.shortcut-table kbd { background: var(--text); color: var(--bg); padding: 2px 8px; font-size: 13px; border-radius: 3px; font-family: inherit; }
.step-list { list-style: none; padding: 0; margin: 0; }
.step-list li { position: relative; padding-left: 32px; margin-bottom: 12px; font-size: 15px; line-height: 1.7; }
.step-list li::before { content: ""; position: absolute; left: 0; top: 6px; width: 18px; height: 18px; background: var(--primary); border: 2px solid var(--border-color); transform: rotate(45deg); }

/* --- 子页面追加 --- */
/* 排行榜页面专属样式 */
        .rank-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            padding: 80px 0 60px;
            border-bottom: 3px solid var(--border-color);
        }
.rank-hero h1 {
            color: #fff;
            font-weight: 900;
            font-size: 2.8rem;
            text-shadow: 3px 3px 0 rgba(0,0,0,0.2);
        }
.rank-hero p {
            color: rgba(255,255,255,0.9);
            font-size: 1.1rem;
            max-width: 700px;
        }
.rank-tabs {
            background: var(--bg);
            border-bottom: 2px solid var(--border-color);
            padding: 15px 0;
            position: sticky;
            top: 70px;
            z-index: 99;
        }
.rank-tabs .btn-rank {
            background: transparent;
            border: 2px solid var(--border-color);
            color: var(--text);
            padding: 8px 20px;
            border-radius: 0;
            font-weight: 600;
            margin-right: 10px;
            transition: all 0.3s ease;
        }
.rank-tabs .btn-rank:hover, .rank-tabs .btn-rank.active {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
.rank-card {
            background: var(--bg);
            border: 2px solid var(--border-color);
            padding: 20px;
            margin-bottom: 25px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            align-items: center;
            gap: 20px;
        }
.rank-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
.rank-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--primary);
            min-width: 70px;
            text-align: center;
            font-style: italic;
        }
.rank-cover {
            width: 100px;
            height: 140px;
            object-fit: cover;
            border: 2px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            flex-shrink: 0;
            background: var(--primary);
        }
.rank-info {
            flex: 1;
        }
.rank-info h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
        }
.rank-info .rank-tags {
            margin-bottom: 8px;
        }
.rank-info .rank-tags span {
            display: inline-block;
            background: rgba(234, 88, 12, 0.1);
            color: var(--primary);
            padding: 2px 10px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-right: 5px;
            border: 1px solid var(--primary);
        }
.rank-info .rank-desc {
            color: rgba(28, 25, 23, 0.7);
            font-size: 0.9rem;
            line-height: 1.5;
            margin-bottom: 10px;
        }
.rank-score {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--accent);
            white-space: nowrap;
        }
.rank-score i {
            color: #f59e0b;
            margin-right: 3px;
        }
.rank-badge {
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 3px 8px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
.trending-up {
            color: #10b981;
            font-size: 0.8rem;
            font-weight: 600;
        }
.trending-down {
            color: #ef4444;
            font-size: 0.8rem;
            font-weight: 600;
        }
.trending-flat {
            color: #6b7280;
            font-size: 0.8rem;
            font-weight: 600;
        }
.rank-hero h1 {
                font-size: 2rem;
            }
.rank-card {
                flex-direction: column;
                text-align: center;
            }
.rank-number {
                min-width: auto;
            }
.rank-cover {
                width: 80px;
                height: 110px;
            }
.rank-info .rank-desc {
                text-align: left;
            }
.rank-score {
                margin-top: 10px;
            }

/* --- 子页面追加 --- */
/* 确保所有组件跟随深色/暖色主题，即使使用了 bootstrap 基础类 */
        .feedback-wrap {
            background: var(--bg);
            color: var(--text);
        }
.form-control, .form-select {
            background-color: rgba(255, 251, 245, 0.9);
            border: 2px solid var(--border-color);
            color: var(--text);
            border-radius: 0;
            box-shadow: none;
            padding: 0.75rem 1rem;
        }
.form-control:focus, .form-select:focus {
            background-color: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 0.2rem rgba(234, 88, 12, 0.15);
            color: var(--text);
        }
.form-label {
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.35rem;
        }
.feedback-card {
            background: #fff7ed;
            border: 2px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
        }
.list-group-item {
            background-color: transparent;
            border: none;
            border-bottom: 1px dashed var(--border-color);
            color: var(--text);
            padding-left: 0;
        }
.list-group-item i {
            color: var(--primary);
            margin-right: 0.5rem;
        }
/* 进度/步骤 */
        .step-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            margin-bottom: 1.2rem;
        }
.step-num {
            min-width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
.step-content {
            flex: 1;
        }
/* 使导航栏高亮当前页 */
        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 700;
            border-bottom: 3px solid var(--primary);
        }

/* --- 子页面追加 --- */
/* 本页专属样式补充 */
        .coop-hero {
            padding: 100px 0 60px;
            position: relative;
            overflow: hidden;
        }
.coop-hero .hero-title {
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--text);
            margin-bottom: 20px;
            line-height: 1.2;
        }
.coop-hero .hero-title span {
            color: var(--primary);
        }
.coop-hero .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text);
            opacity: 0.8;
            max-width: 700px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }
.coop-card {
            background: var(--bg);
            border: 2px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
.coop-card:hover {
            transform: translate(-2px, -2px);
            box-shadow: var(--shadow);
        }
.coop-card-icon {
            width: 60px;
            height: 60px;
            background: var(--primary);
            color: #fff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
        }
.coop-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 15px;
        }
.coop-card p {
            color: var(--text);
            opacity: 0.75;
            line-height: 1.7;
            font-size: 0.95rem;
        }
.coop-process {
            list-style: none;
            padding: 0;
            counter-reset: step;
        }
.coop-process li {
            counter-increment: step;
            position: relative;
            padding: 20px 20px 20px 70px;
            background: var(--bg);
            border: 2px solid var(--border-color);
            border-radius: 10px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-sm);
        }
.coop-process li::before {
            content: counter(step);
            position: absolute;
            left: 20px;
            top: 50%;
            transform: translateY(-50%);
            width: 35px;
            height: 35px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }
.coop-process li h4 {
            font-weight: 700;
            color: var(--text);
            margin-bottom: 5px;
        }
.coop-process li p {
            color: var(--text);
            opacity: 0.75;
            margin: 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
.contact-box {
            background: var(--bg);
            border: 2px solid var(--border-color);
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
.contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 25px;
        }
.contact-item i {
            width: 45px;
            height: 45px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
.contact-item h5 {
            font-weight: 700;
            color: var(--text);
            margin-bottom: 5px;
        }
.contact-item p {
            color: var(--text);
            opacity: 0.75;
            margin: 0;
            font-size: 0.9rem;
        }
.contact-item a {
            color: var(--primary);
            font-weight: 600;
            text-decoration: none;
        }
.contact-item a:hover {
            text-decoration: underline;
        }
.coop-hero .hero-title {
                font-size: 2rem;
            }
.coop-card {
                padding: 20px;
            }
.contact-box {
                padding: 25px;
            }

/* --- 子页面追加 --- */
/* 确保Bootstrap组件不破坏站点配色 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
        .list-group-item, .accordion-item, .accordion-button, .accordion-body,
        .form-control, .form-select, .dropdown-menu, .dropdown-item {
            background: var(--bg);
            color: var(--text);
            border-color: var(--border-color);
        }
/* 导航栏激活状态高亮 */
        .navbar-nav .nav-link.active {
            font-weight: 700;
            color: var(--primary);
            border-bottom: 2px solid var(--primary);
        }
/* 站点地图卡片样式（复用已有类风格，增加微调） */
        .sitemap-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 1.5rem;
        }
.sitemap-card {
            background: var(--bg);
            border: 2px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: 1.5rem 1.25rem;
            transition: transform .2s ease, box-shadow .2s ease;
            text-decoration: none;
            color: var(--text);
            display: flex;
            flex-direction: column;
        }
.sitemap-card:hover {
            transform: translate(-2px, -2px);
            box-shadow: var(--shadow);
        }
.sitemap-card i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: .75rem;
        }
.sitemap-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: .35rem;
        }
.sitemap-card p {
            font-size: .9rem;
            opacity: .8;
            margin-bottom: .5rem;
        }
.sitemap-card .link-arrow {
            margin-top: auto;
            font-weight: 600;
            color: var(--accent);
        }
/* 面包屑样式，保持粗野风格 */
        .breadcrumb-custom {
            background: var(--bg);
            border: 2px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: .75rem 1rem;
            font-size: .95rem;
            margin-top: 1.5rem;
        }
.breadcrumb-custom a {
            color: var(--primary);
            font-weight: 600;
        }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.accordion-header { background:transparent !important; }