:root {
    --primary: #4f46e5;
    --accent: #7c3aed;
    --bg: #f5f3ff;
    --text: #1e1b4b;
    --radius-card: 1rem;
    --radius-btn: 50rem;
    --shadow-light: 0 8px 30px rgba(79, 70, 229, 0.08);
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
}

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(79, 70, 229, 0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-weight: 900;
    font-size: 1.6rem;
    color: var(--primary) !important;
    letter-spacing: -0.02em;
}

.nav-link {
    font-weight: 600;
    color: var(--text) !important;
    margin: 0 0.5rem;
    transition: color 0.3s;
    border-radius: var(--radius-btn);
    padding: 0.5rem 1.2rem !important;
}

.nav-link:hover {
    color: var(--primary) !important;
    background: rgba(79, 70, 229, 0.08);
}

/* Hero 区域 */
.hero {
    min-height: 88vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
    padding: 4rem 2rem;
    background: radial-gradient(ellipse at 20% 50%, rgba(124, 58, 237, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 50%, rgba(79, 70, 229, 0.1) 0%, transparent 60%);
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: floatIn 1s ease-out;
}

.hero .subtitle {
    font-size: clamp(1.2rem, 3vw, 1.6rem);
    font-weight: 400;
    margin-top: 1.5rem;
    color: var(--text);
    opacity: 0.8;
}

.hero .cta-btn {
    margin-top: 2.5rem;
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-weight: 700;
    padding: 1rem 2.8rem;
    border-radius: var(--radius-btn);
    text-decoration: none;
    font-size: 1.1rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.3);
}

.hero .cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(79, 70, 229, 0.4);
}

.hero .cta-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    50%, 100% { left: 100%; }
}

@keyframes floatIn {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* 浮动装饰 */
.float-deco {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
    animation: float 6s ease-in-out infinite;
}

.float-deco-1 {
    width: 60px;
    height: 60px;
    background: var(--primary);
    top: 20%;
    left: 15%;
}

.float-deco-2 {
    width: 30px;
    height: 30px;
    background: var(--accent);
    top: 65%;
    right: 20%;
    animation-delay: 2s;
}

.float-deco-3 {
    width: 40px;
    height: 40px;
    background: var(--primary);
    bottom: 20%;
    left: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* 区块通用 */
.section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text);
    opacity: 0.7;
    margin-bottom: 3rem;
}

/* 使用说明 - 编号清单 */
.steps-list {
    list-style: none;
    counter-reset: step;
    padding: 0;
}

.steps-list li {
    counter-increment: step;
    padding: 1.8rem 2.5rem;
    margin-bottom: 1.2rem;
    background: white;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-light);
    display: flex;
    align-items: center;
    gap: 2rem;
    transition: transform 0.3s, opacity 0.6s;
    opacity: 0;
    transform: translateY(30px);
}

.steps-list li.visible {
    opacity: 1;
    transform: translateY(0);
}

.steps-list li::before {
    content: counter(step);
    font-family: 'Courier New', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    min-width: 3rem;
    text-align: center;
}

.step-text {
    font-size: 1.1rem;
    font-weight: 500;
}

.step-detail {
    color: var(--text);
    opacity: 0.7;
    font-size: 0.95rem;
    margin-top: 0.3rem;
}

/* 特色网格 - 三栏 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: white;
    border-radius: var(--radius-card);
    padding: 2.5rem;
    box-shadow: var(--shadow-light);
    transition: transform 0.3s, box-shadow 0.3s;
    opacity: 0;
    transform: translateY(40px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(79, 70, 229, 0.15);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.feature-text {
    color: var(--text);
    opacity: 0.7;
    line-height: 1.7;
}

/* 对比表格 */
.compare-table {
    width: 100%;
    background: white;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    margin-top: 2rem;
}

.compare-table th, .compare-table td {
    padding: 1.5rem;
    text-align: left;
}

.compare-table thead th {
    background: var(--primary);
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
}

.compare-table tbody tr {
    border-bottom: 1px solid rgba(79, 70, 229, 0.1);
    transition: background 0.3s;
}

.compare-table tbody tr:hover {
    background: rgba(79, 70, 229, 0.03);
}

.compare-table .num {
    font-family: 'Courier New', monospace;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
}

/* 长文区 */
.long-article {
    background: white;
    border-radius: var(--radius-card);
    padding: 3.5rem;
    box-shadow: var(--shadow-light);
    line-height: 1.9;
}

.long-article h2 {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 2rem;
    color: var(--text);
}

.long-article p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.long-article strong {
    color: var(--primary);
}

/* FAQ */
.faq-item {
    background: white;
    border-radius: var(--radius-card);
    padding: 2rem;
    margin-bottom: 1.2rem;
    box-shadow: var(--shadow-light);
    transition: transform 0.3s;
}

.faq-item:hover {
    transform: translateX(5px);
}

.faq-question {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: var(--primary);
}

.faq-answer {
    color: var(--text);
    opacity: 0.8;
    line-height: 1.7;
}

/* CTA 区 */
.cta-section {
    text-align: center;
    padding: 6rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-card);
    margin: 4rem 0;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-section h2 {
    font-size: 2.8rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.cta-section .cta-btn {
    background: white;
    color: var(--primary);
    font-weight: 700;
    padding: 1rem 2.8rem;
    border-radius: var(--radius-btn);
    text-decoration: none;
    font-size: 1.1rem;
    display: inline-block;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.cta-section .cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.3);
}

/* 友情链接 */
.friend-links {
    padding: 3rem 0;
    border-top: 1px solid rgba(79, 70, 229, 0.1);
    margin-top: 4rem;
}

.friend-links h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text);
}

/* 页脚 */
footer {
    background: var(--text);
    color: white;
    padding: 3rem 0;
    margin-top: 5rem;
}

footer a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.3s;
}

footer a:hover {
    color: white;
}

/* 动画延迟 */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* 数字滚动 */
.stat-number {
    font-family: 'Courier New', monospace;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    display: inline-block;
}

/* 响应式 */
@media (max-width: 768px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .navbar-collapse {
        background: white;
        padding: 1rem;
        border-radius: var(--radius-card);
        margin-top: 0.5rem;
        box-shadow: var(--shadow-light);
    }
    
    .nav-link {
        padding: 0.8rem 1.2rem !important;
    }
    
    .long-article {
        padding: 2rem;
    }
    
    .cta-section h2 {
        font-size: 2rem;
    }
}

/* --- 子页面追加 --- */
/* 页面专属微调 */
        .about-hero { padding: 5rem 0 3rem; position: relative; overflow: hidden; }
.about-hero .hero-title { font-size: 2.5rem; font-weight: 900; line-height: 1.2; margin-bottom: 1rem; }
.about-hero .hero-sub { font-size: 1.1rem; color: rgba(30, 27, 75, .75); max-width: 720px; }
.section-sm { padding: 3rem 0; }
.timeline-item { border-left: 3px solid var(--primary); padding-left: 1.5rem; margin-bottom: 2rem; position: relative; }
.timeline-item::before { content: ""; width: 12px; height: 12px; background: var(--accent); border-radius: 50%; position: absolute; left: -7.5px; top: 6px; }
.value-card { background: #fff; border-radius: var(--radius-card); padding: 1.75rem; height: 100%; box-shadow: var(--shadow-light); border: 1px solid rgba(79, 70, 229, .08); transition: transform .2s ease; }
.value-card:hover { transform: translateY(-4px); }
.value-card .icon-wrap { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; font-size: 1.3rem; margin-bottom: 1rem; }
.about-stats { background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: var(--radius-card); padding: 2.5rem 2rem; color: #fff; }
.about-stats .stat-num { font-size: 2.2rem; font-weight: 900; }
.about-stats .stat-label { opacity: .85; font-size: .9rem; }
.editor-note { background: #fff; border-radius: var(--radius-card); padding: 2rem; border-left: 5px solid var(--primary); box-shadow: var(--shadow-light); margin: 2.5rem 0; }
.editor-note .note-author { display: flex; align-items: center; gap: 1rem; margin-top: 1.25rem; }
.editor-note .note-author img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; }
.editor-note .note-author .name { font-weight: 700; }
.editor-note .note-author .role { font-size: .85rem; color: rgba(30, 27, 75, .6); }

/* --- 子页面追加 --- */
/* 本页专属少量样式 */
        .disclaimer-hero {
            background: linear-gradient(135deg, var(--bg) 0%, rgba(79, 70, 229, 0.08) 100%);
            padding: 4rem 0 2rem;
            position: relative;
            overflow: hidden;
        }
.disclaimer-hero h1 {
            font-weight: 800;
            color: var(--text);
            font-size: 2.5rem;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }
.disclaimer-hero h1 span {
            color: var(--primary);
        }
.disclaimer-hero .subtitle {
            color: var(--text);
            opacity: 0.75;
            font-size: 1.15rem;
            max-width: 720px;
            margin: 0 auto 2rem;
        }
.disclaimer-card {
            background: rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(79, 70, 229, 0.12);
            border-radius: var(--radius-card);
            padding: 2.5rem;
            margin-bottom: 1.5rem;
            box-shadow: var(--shadow-light);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.disclaimer-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(79, 70, 229, 0.12);
        }
.disclaimer-card h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
.disclaimer-card h2 i {
            font-size: 1.2rem;
            color: var(--accent);
        }
.disclaimer-card p,
        .disclaimer-card li {
            color: var(--text);
            opacity: 0.82;
            line-height: 1.8;
            font-size: 0.98rem;
        }
.disclaimer-card ul {
            padding-left: 1.25rem;
        }
.disclaimer-card ul li {
            margin-bottom: 0.6rem;
        }
.highlight-box {
            background: rgba(79, 70, 229, 0.08);
            border-left: 4px solid var(--primary);
            padding: 1rem 1.5rem;
            border-radius: 0 0.75rem 0.75rem 0;
            margin: 1.5rem 0;
        }
.highlight-box p {
            margin: 0;
            opacity: 0.9;
            font-weight: 500;
        }
.contact-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            border-radius: var(--radius-card);
            padding: 2.5rem;
            color: #fff;
            text-align: center;
            margin-top: 2rem;
        }
.contact-box h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #fff;
        }
.contact-box p {
            opacity: 0.9;
            margin-bottom: 1.5rem;
        }
.contact-box .btn-contact {
            background: rgba(255, 255, 255, 0.15);
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            padding: 0.6rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
        }
.contact-box .btn-contact:hover {
            background: #fff;
            color: var(--primary);
            transform: translateY(-2px);
        }
.update-date {
            text-align: center;
            margin-top: 2rem;
            color: var(--text);
            opacity: 0.5;
            font-size: 0.9rem;
            font-weight: 500;
        }
.disclaimer-hero h1 {
                font-size: 2rem;
            }
.disclaimer-card {
                padding: 1.75rem;
            }
.disclaimer-card h2 {
                font-size: 1.2rem;
            }

/* --- 子页面追加 --- */
.guide-hero {
            background: linear-gradient(135deg, var(--bg) 0%, #ede9fe 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
.guide-hero h1 {
            font-weight: 800;
            font-size: 2.8rem;
            color: var(--text);
            margin-bottom: 20px;
        }
.guide-hero p {
            font-size: 1.1rem;
            color: var(--text);
            opacity: .85;
            max-width: 700px;
            line-height: 1.8;
        }
.guide-section {
            padding: 60px 0;
        }
.guide-section:nth-child(even) {
            background: #ffffff;
        }
.step-card {
            background: #ffffff;
            border-radius: var(--radius-card);
            padding: 28px 30px;
            box-shadow: var(--shadow-light);
            margin-bottom: 20px;
            border-left: 4px solid var(--primary);
            transition: transform .3s;
        }
.step-card:hover {
            transform: translateY(-4px);
        }
.step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-weight: 700;
            font-size: 1rem;
            margin-right: 14px;
        }
.step-title {
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text);
            margin-bottom: 8px;
        }
.step-desc {
            color: #4a4a6a;
            line-height: 1.7;
            padding-left: 50px;
        }
.feature-box {
            background: var(--bg);
            border-radius: var(--radius-card);
            padding: 30px;
            height: 100%;
            border: 1px solid rgba(79, 70, 229, .1);
            transition: box-shadow .3s;
        }
.feature-box:hover {
            box-shadow: var(--shadow-light);
        }
.feature-box i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
.feature-box h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
.feature-box p {
            color: #4a4a6a;
            line-height: 1.7;
            font-size: .95rem;
        }
.faq-box {
            background: #ffffff;
            border-radius: var(--radius-card);
            padding: 24px 28px;
            margin-bottom: 16px;
            box-shadow: var(--shadow-light);
        }
.faq-box h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
.faq-box h3 i {
            color: var(--primary);
            font-size: .9rem;
        }
.faq-box p {
            color: #4a4a6a;
            line-height: 1.7;
            font-size: .95rem;
        }
.tip-box {
            background: #fefce8;
            border: 1px solid #facc15;
            border-radius: var(--radius-card);
            padding: 20px 24px;
            margin: 24px 0;
        }
.tip-box i {
            color: #eab308;
            margin-right: 8px;
        }
.guide-hero h1 {
                font-size: 2rem;
            }
.step-desc {
                padding-left: 0;
                margin-top: 10px;
            }