/* CSS 变量 - 玫红粉调 */
        :root {
            --brand-primary: #db2777;
            --brand-accent: #f43f5e;
            --brand-bg: #fff1f5;
            --brand-text: #500724;
            --brand-soft: #ffe4ec;
            --brand-light: #ffffff;
            --brand-shadow: rgba(219, 39, 119, 0.08);
            --brand-shadow-hover: rgba(219, 39, 119, 0.15);
            --brand-radius: 1.5rem;
            --brand-radius-full: 100px;
        }

        * {
            box-sizing: border-box;
        }

        body {
            background-color: var(--brand-bg);
            color: var(--brand-text);
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            font-weight: 400;
            line-height: 1.7;
            overflow-x: hidden;
        }

        /* 滚动进度条 */
        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            height: 5px;
            width: 0%;
            background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
            z-index: 9999;
            transition: width 0.1s ease-out;
            border-radius: 0 var(--brand-radius-full) var(--brand-radius-full) 0;
            box-shadow: 0 0 12px rgba(219, 39, 119, 0.4);
        }

        /* Hero 区域浮动光斑 + 视差 */
        .hero-section {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 4rem 1rem;
            overflow: hidden;
            background: radial-gradient(circle at 20% 30%, rgba(219, 39, 119, 0.08) 0%, transparent 30%),
                        radial-gradient(circle at 80% 70%, rgba(244, 63, 94, 0.1) 0%, transparent 35%);
            background-blend-mode: overlay;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-title {
            font-size: calc(3rem + 1vw);
            font-weight: 900;
            line-height: 1.1;
            letter-spacing: -0.02em;
            background: linear-gradient(145deg, var(--brand-primary), var(--brand-accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
            text-shadow: 0 0 40px rgba(219, 39, 119, 0.2);
        }

        .hero-sub {
            font-size: 1.3rem;
            font-weight: 400;
            color: #9d174d;
            max-width: 650px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }

        .hero-cta {
            background-color: var(--brand-primary);
            color: #fff !important;
            padding: 0.9rem 2.8rem;
            border-radius: var(--brand-radius-full);
            font-weight: 600;
            font-size: 1.2rem;
            border: none;
            box-shadow: 0 8px 20px rgba(219, 39, 119, 0.3);
            transition: 0.2s ease;
            text-decoration: none;
            display: inline-block;
        }
        .hero-cta:hover {
            background-color: #be185d;
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 26px rgba(219, 39, 119, 0.4);
        }

        /* 浮动装饰元素 */
        .float-decor {
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle at center, rgba(219,39,119,0.12), transparent 70%);
            filter: blur(20px);
            animation: float 8s infinite alternate ease-in-out;
            z-index: 0;
        }
        .fd1 { top: 10%; left: 5%; animation-duration: 12s; }
        .fd2 { bottom: 15%; right: 5%; animation-duration: 9s; width: 300px; height: 300px; }
        .fd3 { top: 50%; left: 80%; width: 150px; height: 150px; animation-duration: 7s; }

        @keyframes float {
            0% { transform: translateY(0px) scale(1); opacity: 0.5; }
            100% { transform: translateY(-30px) scale(1.1); opacity: 0.9; }
        }

        /* 区块通用 */
        .section-pad {
            padding: 6rem 0;
        }

        .section-title {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--brand-text);
            position: relative;
            margin-bottom: 2rem;
        }
        .section-title:after {
            content: '';
            display: block;
            width: 90px;
            height: 4px;
            background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
            margin-top: 1rem;
            border-radius: 4px;
        }

        /* 卡片网格 */
        .feature-grid .card {
            border: none;
            background: var(--brand-light);
            border-radius: 1.8rem;
            padding: 2rem 1.8rem;
            transition: all 0.25s ease;
            box-shadow: 0 6px 16px var(--brand-shadow);
            height: 100%;
        }
        .feature-grid .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 30px var(--brand-shadow-hover);
            background-color: #ffffff;
        }
        .feature-grid .card i {
            font-size: 2.2rem;
            color: var(--brand-primary);
            margin-bottom: 1.2rem;
        }
        .feature-grid .card h5 {
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .feature-grid .card p {
            color: #6b0a35;
            opacity: 0.8;
            font-size: 0.95rem;
        }

        /* 步骤条 */
        .steps-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 1.8rem;
            justify-content: center;
        }
        .step-item {
            background: var(--brand-light);
            border-radius: 3rem;
            padding: 2rem 2rem;
            flex: 1 1 220px;
            max-width: 280px;
            box-shadow: 0 6px 14px var(--brand-shadow);
            text-align: center;
            transition: 0.2s;
        }
        .step-item:hover {
            box-shadow: 0 14px 22px var(--brand-shadow-hover);
            transform: scale(1.01);
        }
        .step-number {
            background: linear-gradient(145deg, var(--brand-primary), var(--brand-accent));
            color: white;
            font-weight: 800;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            margin: 0 auto 1.5rem;
            font-size: 1.5rem;
            box-shadow: 0 8px 16px rgba(219,39,119,0.2);
        }
        .step-item h4 {
            font-weight: 700;
            font-size: 1.4rem;
        }

        /* 长文 */
        .long-read {
            background: rgba(255,255,255,0.6);
            backdrop-filter: blur(4px);
            border-radius: 3rem;
            padding: 3rem 3.5rem;
            box-shadow: 0 8px 30px rgba(219,39,119,0.05);
            max-width: 800px;
            margin: 0 auto;
        }
        .long-read p {
            margin-bottom: 1.4rem;
            color: #601530;
            font-size: 1.05rem;
        }

        /* FAQ 手风琴样式自定义 */
        .accordion-button:not(.collapsed) {
            background-color: var(--brand-soft);
            color: var(--brand-primary);
            font-weight: 600;
        }
        .accordion-item {
            border: 1px solid #ffd3e0;
            border-radius: 30px !important;
            margin-bottom: 1.2rem;
            overflow: hidden;
            background: rgba(255,255,255,0.7);
        }
        .accordion-button {
            background: transparent;
            color: var(--brand-text);
            padding: 1.4rem 1.8rem;
            font-size: 1.1rem;
            font-weight: 600;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(219,39,119,0.1);
        }

        /* CTA */
        .cta-box {
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
            border-radius: 4rem;
            padding: 4rem 2rem;
            color: white;
            text-align: center;
            box-shadow: 0 20px 40px rgba(219,39,119,0.2);
        }
        .cta-box h2 {
            font-weight: 800;
            font-size: 2.8rem;
        }
        .cta-box .btn-light {
            background: white;
            border: none;
            color: var(--brand-primary);
            font-weight: 700;
            padding: 0.8rem 2.5rem;
            border-radius: 100px;
            margin-top: 1.5rem;
        }

        /* 友情链接 */
        .friend-links {
            background: rgba(255, 255, 255, 0.5);
            border-radius: 3rem;
            padding: 2rem;
            margin-top: 4rem;
        }
        .friend-links h5 {
            font-weight: 700;
            color: var(--brand-text);
            margin-bottom: 1rem;
        }

        footer {
            background: transparent;
            color: #8b1e4d;
            padding: 2rem 0;
            border-top: 2px solid #ffd3e0;
        }
        footer a {
            color: var(--brand-primary);
            text-decoration: none;
            margin: 0 0.5rem;
        }
        .nav-pills .nav-link.active {
            background-color: var(--brand-primary);
            border-radius: 50px;
            padding: 0.5rem 1.4rem;
        }
        .navbar {
            background: rgba(255, 241, 245, 0.8);
            backdrop-filter: blur(10px);
            border-radius: 100px;
            padding: 0.6rem 1.5rem;
            margin-top: 1rem;
            box-shadow: 0 6px 16px rgba(219, 39, 119, 0.05);
        }
        .navbar-brand {
            font-weight: 900;
            font-size: 1.6rem;
            color: var(--brand-primary) !important;
            letter-spacing: -0.02em;
        }
        .navbar .nav-link {
            color: var(--brand-text);
            font-weight: 500;
            margin: 0 0.2rem;
            border-radius: 40px;
            padding: 0.5rem 1.2rem !important;
        }
        .navbar .nav-link:hover {
            color: var(--brand-primary);
            background: rgba(219, 39, 119, 0.04);
        }

        /* 通用全圆按钮 */
        .btn-rounded {
            border-radius: 100px;
        }

        /* 随机图片占位 */
        .placeholder-img {
            background: linear-gradient(145deg, #ffd6e4, #ffe4ec);
            border-radius: 2rem;
            width: 100%;
            aspect-ratio: 3/4;
        }

/* --- 子页面追加 --- */
/* 子页面专属微调 — 补足本站浅色背景下的细节 */
        .about-hero { background: var(--brand-bg); padding: 3rem 0 2rem; }
.about-hero .hero-title { color: var(--brand-text); }
.stat-card { background: var(--brand-light); border-radius: var(--brand-radius); box-shadow: 0 8px 30px var(--brand-shadow); padding: 1.75rem; height: 100%; border: 1px solid var(--brand-soft); }
.stat-card h3 { color: var(--brand-primary); font-weight: 800; }
.stat-card p { color: var(--brand-text); opacity: 0.85; }
.about-section-title { color: var(--brand-primary); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 1.5rem; }
.story-card { background: var(--brand-light); border-radius: var(--brand-radius); border: 1px solid var(--brand-soft); box-shadow: 0 6px 20px var(--brand-shadow); padding: 2rem; }
.badge-soft { background: var(--brand-soft); color: var(--brand-text); padding: 0.25rem 1rem; border-radius: var(--brand-radius-full); font-size: 0.85rem; font-weight: 600; }
.accent-border { border-left: 5px solid var(--brand-primary); }
.day-list { list-style: none; padding-left: 0; }
.day-list li { padding: 0.9rem 0 0.9rem 2rem; position: relative; color: var(--brand-text); border-bottom: 1px dashed var(--brand-soft); }
.day-list li:last-child { border-bottom: none; }
.day-list li::before { content: "◆"; position: absolute; left: 0.3rem; color: var(--brand-primary); opacity: 0.6; }
.friend-links a { color: var(--brand-primary); text-decoration: none; font-weight: 600; }
.friend-links a:hover { text-decoration: underline; }
.navbar .nav-link.active { color: var(--brand-primary) !important; font-weight: 700; }
.btn-rounded:hover { background: var(--brand-accent); }

/* --- 子页面追加 --- */
.guide-hero {
            background: linear-gradient(135deg, var(--brand-soft), var(--brand-bg));
            border-radius: var(--brand-radius);
            padding: 3.5rem 2rem;
            margin-top: 1.5rem;
        }
.guide-section-title {
            font-weight: 800;
            color: var(--brand-primary);
            letter-spacing: -0.02em;
            position: relative;
            padding-bottom: .75rem;
            margin-bottom: 1.75rem;
        }
.guide-section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 4rem;
            height: 4px;
            background: var(--brand-accent);
            border-radius: 2px;
        }
.guide-card-custom {
            background: var(--brand-light);
            border: 1px solid var(--brand-soft);
            border-radius: 1.25rem;
            padding: 1.5rem;
            height: 100%;
            transition: box-shadow .2s, transform .2s;
        }
.guide-card-custom:hover {
            box-shadow: 0 10px 25px var(--brand-shadow-hover);
            transform: translateY(-3px);
        }
.step-badge {
            background: var(--brand-primary);
            color: #fff;
            width: 2rem;
            height: 2rem;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin-right: .75rem;
        }
.keycap {
            background: var(--brand-soft);
            border: 1px solid var(--brand-primary);
            color: var(--brand-text);
            border-radius: 6px;
            padding: 0 .4rem;
            font-weight: 600;
            font-size: .85em;
        }
.tip-box {
            background: var(--brand-bg);
            border-left: 4px solid var(--brand-accent);
            border-radius: .75rem;
            padding: 1rem 1.25rem;
            margin: 1.5rem 0;
        }
.faq-item-custom {
            border: 1px solid var(--brand-soft);
            border-radius: 1rem;
            padding: 1.25rem;
            background: var(--brand-light);
            margin-bottom: 1rem;
        }
.faq-item-custom h4 {
            color: var(--brand-primary);
            font-weight: 700;
        }
.btn-guide {
            background: var(--brand-primary);
            color: white;
            border-radius: var(--brand-radius-full);
            padding: .6rem 1.5rem;
            font-weight: 600;
            border: none;
        }
.btn-guide:hover {
            background: var(--brand-accent);
            color: white;
        }
/* 覆盖 bootstrap 可能引入的 nav-link 颜色，以防万一 */
        .navbar-nav .nav-link {
            color: var(--brand-text);
        }
.navbar-nav .nav-link.active,
        .navbar-nav .nav-link:hover {
            color: var(--brand-primary);
        }

/* --- 子页面追加 --- */
/* 确保任何bootstrap组件都跟随品牌色（若有意外使用） */
        .card, .card-body, .card-header, .card-footer,
        .form-control, .form-select, .list-group-item,
        .accordion-item, .accordion-button, .accordion-body,
        .modal-content, .dropdown-menu, .dropdown-item {
            background: var(--brand-light);
            color: var(--brand-text);
            border-color: var(--brand-soft);
        }
.btn-outline-brand {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
        }
.btn-outline-brand:hover {
            background: var(--brand-primary);
            color: #fff;
        }
/* 隐私页自定义微调 */
        .privacy-section {
            padding: 4rem 0;
        }
.privacy-title {
            color: var(--brand-text);
            font-weight: 700;
        }
.privacy-sub {
            color: var(--brand-primary);
            font-weight: 600;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            font-size: 1.4rem;
            border-left: 4px solid var(--brand-primary);
            padding-left: 0.75rem;
        }
.privacy-text {
            color: var(--brand-text);
            line-height: 1.8;
            margin-bottom: 1rem;
        }
.privacy-list {
            padding-left: 1.2rem;
        }
.privacy-list li {
            margin-bottom: 0.5rem;
        }
.footer {
            background: var(--brand-bg);
            border-top: 1px solid var(--brand-soft);
        }
.footer a {
            color: var(--brand-primary);
        }
.footer .text-muted {
            color: var(--brand-text) !important;
            opacity: 0.75;
        }

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