/* ========== 浅色主题配色方案 ========== */
:root {
    --primary-color: #10b981;
    --primary-dark: #059669;
    --primary-light: #34d399;
    --secondary-color: #06b6d4;
    --accent-color: #8b5cf6;
    
    /* 浅色背景色系 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-gradient-start: #f8fafc;
    --bg-gradient-end: #e2e8f0;
    
    /* 文字色系 */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-light: #94a3b8;
    
    /* 边框和分割线 */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 30px rgba(16, 185, 129, 0.15);
}

/* ========== Hero 区域 - 浅色渐变背景 ========== */
.timer-hero {
    background: 
        linear-gradient(135deg, 
            #f0fdf4 0%, 
            #ecfdf5 15%, 
            #f0fdf4 30%, 
            #e0f2fe 50%, 
            #f0fdf4 70%, 
            #ecfdf5 85%, 
            #f0fdf4 100%);
    position: relative;
    overflow: hidden;
}

.timer-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 50%, rgba(16, 185, 129, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 30%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 50% 40% at 50% 80%, rgba(110, 231, 183, 0.05) 0%, transparent 40%);
    pointer-events: none;
    z-index: 1;
    animation: timerGlowPulse 8s ease-in-out infinite;
}

@keyframes timerGlowPulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.timer-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(160deg, 
            rgba(16, 185, 129, 0.03) 0%, 
            rgba(6, 182, 212, 0.02) 20%, 
            rgba(110, 231, 183, 0.02) 45%, 
            rgba(6, 182, 212, 0.02) 70%, 
            rgba(16, 185, 129, 0.03) 100%);
    pointer-events: none;
    z-index: 0;
}

/* 装饰性光效 */
.timer-hero .hero-light-rays {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 60%;
    height: 140%;
    background: conic-gradient(
        from 200deg at 50% 0%,
        transparent 0deg,
        rgba(16, 185, 129, 0.02) 10deg,
        transparent 20deg,
        rgba(16, 185, 129, 0.015) 35deg,
        transparent 45deg,
        rgba(6, 182, 212, 0.015) 55deg,
        transparent 65deg,
        rgba(16, 185, 129, 0.02) 75deg,
        transparent 85deg,
        rgba(110, 231, 183, 0.01) 100deg,
        transparent 110deg,
        rgba(16, 185, 129, 0.015) 130deg,
        transparent 140deg
    );
    pointer-events: none;
    z-index: 1;
    animation: lightRaysRotate 40s linear infinite;
}

@keyframes lightRaysRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 网格背景 */
.timer-hero .hero-grid-bg {
    background-image:
        linear-gradient(rgba(16, 185, 129, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(16, 185, 129, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 70%);
    z-index: 1;
}

/* 粒子效果 */
.timer-hero .hero-particle {
    background: var(--primary-color);
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.4);
    opacity: 0.6;
}

.timer-hero .hero-content {
    position: relative;
    z-index: 3;
}

.timer-hero .col-lg-6 {
    position: relative;
    z-index: 3;
}

/* Hero 徽章 - 浅色版本 */
.timer-hero .hero-badge {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(6, 182, 212, 0.12));
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--primary-dark);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-shadow: none;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    padding: 12px 28px;
    font-size: 0.9375rem;
    border-radius: 50px;
}

.timer-hero .hero-badge i {
    color: var(--primary-dark);
    margin-right: 8px;
}

/* Hero 标题 - 深色文字增强对比度 */
.timer-hero .hero-title {
    background: linear-gradient(135deg, #1e293b 0%, #334155 25%, #1e293b 50%, #0f172a 75%, #1e293b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    font-size: clamp(2.25rem, 5.5vw, 3.75rem);
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.08));
    letter-spacing: -0.02em;
    line-height: 1.1;
    font-weight: 800;
    margin-top: 20px;
}

/* Hero 描述 - 深色文字 */
.timer-hero .hero-desc {
    color: var(--text-secondary);
    font-size: clamp(1.0625rem, 2.4vw, 1.3125rem);
    line-height: 1.9;
    letter-spacing: 0.025em;
    font-weight: 500;
    margin-top: 24px;
    text-shadow: none;
}

/* Hero 系统信息 */
.timer-hero .hero-system-info {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    margin-top: 20px;
    background: rgba(255, 255, 255, 0.7);
    padding: 10px 18px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.timer-hero .hero-system-info i {
    color: var(--primary-color);
}

/* 主要按钮 - 渐变绿色 */
.timer-hero .btn-hero-primary {
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    color: #ffffff;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 18px 40px;
    font-size: 1.0625rem;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.timer-hero .btn-hero-primary:hover {
    box-shadow: 0 12px 30px rgba(16, 185, 129, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
    background: linear-gradient(135deg, #059669, #047857);
}

.timer-hero .btn-hero-primary i {
    margin-right: 8px;
}

/* 次要按钮 - 浅色描边 */
.timer-hero .btn-hero-secondary {
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid rgba(16, 185, 129, 0.3);
    color: var(--primary-dark);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    padding: 18px 40px;
    font-size: 1.0625rem;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.timer-hero .btn-hero-secondary:hover {
    background: rgba(16, 185, 129, 0.08);
    border-color: rgba(16, 185, 129, 0.5);
    color: var(--primary-dark);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.timer-hero .btn-hero-secondary i {
    margin-right: 8px;
    color: var(--primary-color);
}

/* Hero 按钮容器间距优化 */
.timer-hero .hero-actions {
    margin-top: 32px;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ========== 通用区块样式 ========== */
.section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.section-dark {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(6, 182, 212, 0.08));
    color: var(--primary-dark);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    border: 1px solid rgba(16, 185, 129, 0.2);
    margin-bottom: 20px;
}

.section-badge i {
    color: var(--primary-color);
}

.section-title {
    color: var(--text-primary);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: clamp(1rem, 2vw, 1.1875rem);
    line-height: 1.7;
    font-weight: 400;
    max-width: 700px;
    margin: 0 auto;
}

/* ========== 功能时间线 ========== */
#features .container {
    max-width: 1200px;
    padding: 0 20px;
}

.feature-timeline {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
    padding: 60px 0 20px;
}

/* 中线 */
.feature-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: calc(100% - 60px);
    background: linear-gradient(180deg, rgba(16, 185, 129, 0.25), rgba(6, 182, 212, 0.18));
    border-radius: 3px;
    top: 30px;
}

.timeline-item {
    position: relative;
    width: calc(50% - 30px);
    max-width: 520px;
    box-sizing: border-box;
}

/* 奇数项在左边 */
.timeline-item:nth-child(odd) {
    float: left;
    clear: both;
    margin-right: 30px;
    text-align: right;
}

/* 偶数项在右边，向下偏移形成交错 */
.timeline-item:nth-child(even) {
    float: right;
    clear: both;
    margin-left: 30px;
    text-align: left;
    margin-top: 80px;
}

.timeline-item::after {
    content: '';
    display: table;
    clear: both;
}

/* 圆点 */
.timeline-dot {
    position: absolute;
    top: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #10b981, #06b6d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0.15), 0 8px 20px rgba(16, 185, 129, 0.25);
    z-index: 2;
}

/* 奇数项的圆点在右侧（靠近中线） */
.timeline-item:nth-child(odd) .timeline-dot {
    right: -25px;
}

/* 偶数项的圆点在左侧（靠近中线） */
.timeline-item:nth-child(even) .timeline-dot {
    left: -25px;
}

.timeline-dot i {
    color: #ffffff;
    font-size: 1.25rem;
}

/* 内容卡片 */
.timeline-content {
    background: #ffffff;
    padding: 28px 24px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
    word-wrap: break-word;
    white-space: normal;
}

.timeline-content:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.timeline-content h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
    line-height: 1.3;
    word-wrap: break-word;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin: 0;
    word-wrap: break-word;
}

/* 清除浮动 */
.feature-timeline::after {
    content: '';
    display: table;
    clear: both;
}

/* ========== 步骤区域 ========== */
.steps-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.steps-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.step-card {
    background: #ffffff;
    padding: 40px 32px;
    border-radius: 24px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    flex: 0 0 280px;
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #10b981, #06b6d4);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.step-card:hover::before {
    transform: scaleX(1);
}

.step-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.step-number {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 3rem;
    font-weight: 900;
    color: rgba(16, 185, 129, 0.08);
    line-height: 1;
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(6, 182, 212, 0.1));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.step-card:hover .step-icon {
    background: linear-gradient(135deg, #10b981, #06b6d4);
    transform: scale(1.1) rotate(-5deg);
}

.step-icon i {
    font-size: 2rem;
    color: var(--primary-dark);
    transition: all 0.3s ease;
}

.step-card:hover .step-icon i {
    color: #ffffff;
}

.step-card h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin: 0;
}

.step-connector {
    color: var(--text-light);
    font-size: 1.5rem;
    opacity: 0.5;
}

/* ========== 产品展示区域 ========== */
.showcase-row {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 80px;
    padding: 50px;
    background: #ffffff;
    border-radius: 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.showcase-row:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.showcase-row.reverse {
    flex-direction: row-reverse;
}

.showcase-text {
    flex: 1;
}

.showcase-text h3 {
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.showcase-text p {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

.showcase-text ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.showcase-text ul li {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.showcase-text ul li i {
    color: var(--primary-color);
    font-size: 1.125rem;
}

.showcase-img {
    flex-shrink: 0;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

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

.showcase-row:hover .showcase-img img {
    transform: scale(1.05);
}

/* ========== 优势区域 ========== */
.advantages-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.advantage-card {
    background: #ffffff;
    padding: 40px 32px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.advantage-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px);
    border-color: rgba(16, 185, 129, 0.2);
}

.advantage-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(6, 182, 212, 0.1));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.advantage-card:hover .advantage-icon {
    background: linear-gradient(135deg, #10b981, #06b6d4);
    transform: scale(1.1) rotate(-5deg);
}

.advantage-icon i {
    font-size: 1.75rem;
    color: var(--primary-dark);
    transition: all 0.3s ease;
}

.advantage-card:hover .advantage-icon i {
    color: #ffffff;
}

.advantage-card h3 {
    color: var(--text-primary);
    font-size: 1.1875rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.3;
}

.advantage-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin: 0;
}

/* ========== 数据统计区域 ========== */
.stats-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 40%);
    pointer-events: none;
}

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 900;
    color: #ffffff;
    margin-bottom: 8px;
    letter-spacing: -0.03em;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.stat-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.0625rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* ========== 用户评价区域 ========== */
.reviews-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.review-card {
    background: #ffffff;
    padding: 40px 32px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.review-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px);
}

.review-stars {
    margin-bottom: 20px;
}

.review-stars i {
    color: #fbbf24;
    font-size: 1.125rem;
    margin-right: 4px;
}

.review-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.review-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #10b981, #06b6d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 700;
    font-size: 1.125rem;
}

.review-name {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 4px;
}

.review-role {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* ========== FAQ 区域 ========== */
.faq-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: 28px 32px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
}

.faq-question h3 {
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0;
}

.faq-toggle {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(6, 182, 212, 0.08));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.faq-toggle i {
    color: var(--primary-color);
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
    background: linear-gradient(135deg, #10b981, #06b6d4);
}

.faq-item.active .faq-toggle i {
    color: #ffffff;
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer-inner {
    padding: 0 32px 28px;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
}

/* ========== 下载区域 ========== */
.download-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.download-box {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 32px;
    padding: 80px 60px;
    text-align: center;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.download-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.download-box h3 {
    color: var(--text-primary);
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.download-box p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 40px;
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 48px;
    flex-wrap: wrap;
}

.download-info-item {
    color: var(--text-tertiary);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.download-info-item i {
    color: var(--primary-color);
}

/* ========== 页脚区域 ========== */
.footer {
    background: var(--bg-primary);
    padding: 60px 0 40px;
    border-top: 1px solid var(--border-color);
}

/* ========== 响应式设计 ========== */
@media (max-width: 991px) {
    .feature-timeline::before {
        left: 0;
    }
    
    .timeline-item {
        width: 100% !important;
        float: none !important;
        clear: both !important;
        margin-left: 60px !important;
        margin-right: 0 !important;
        margin-left: 60px !important;
        margin-top: 0 !important;
        max-width: none !important;
        text-align: left !important;
    }
    
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        margin-top: 0 !important;
        margin-left: 60px !important;
        margin-right: 0 !important;
    }
    
    .timeline-item:nth-child(odd) .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: -60px !important;
        right: auto !important;
    }
    
    .showcase-row,
    .showcase-row.reverse {
        flex-direction: column;
        gap: 32px;
        padding: 32px;
    }
    
    .showcase-img {
        width: 100%;
        max-width: 480px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .step-connector {
        display: none;
    }
    
    .steps-grid {
        flex-direction: column;
        align-items: stretch;
    }
    
    .step-card {
        flex: 0 0 auto;
        width: 100%;
    }
}

@media (max-width: 767px) {
    #features .container {
        padding: 0 15px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .timeline-item {
        margin-left: 50px !important;
        margin-top: 0 !important;
    }
    
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        margin-left: 50px !important;
        margin-right: 0 !important;
    }
    
    .timeline-item:nth-child(odd) .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: -50px !important;
        width: 45px;
        height: 45px;
    }
    
    .timeline-dot i {
        font-size: 1.125rem;
    }
    
    .timeline-content {
        padding: 20px 18px;
    }
    
    .timeline-content h3 {
        font-size: 1.125rem;
    }
    
    .timeline-content p {
        font-size: 0.875rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn-hero-primary,
    .btn-hero-secondary {
        width: 100%;
        text-align: center;
    }
    
    .download-box {
        padding: 48px 24px;
    }
    
    .download-box h3 {
        font-size: 1.75rem;
    }
    
    .download-info {
        flex-direction: column;
        gap: 16px;
        align-items: center;
    }
    
    .step-card {
        padding: 32px 24px;
    }
    
    .step-icon {
        width: 70px;
        height: 70px;
    }
    
    .step-icon i {
        font-size: 1.75rem;
    }
    
    .showcase-row {
        padding: 24px;
    }
    
    .showcase-text h3 {
        font-size: 1.5rem;
    }
    
    .advantage-card {
        padding: 32px 24px;
    }
}

@media (max-width: 576px) {
    .timeline-item {
        margin-left: 45px !important;
        margin-top: 0 !important;
    }
    
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        margin-left: 45px !important;
        margin-right: 0 !important;
    }
    
    .timeline-item:nth-child(odd) .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: -45px !important;
        width: 40px;
        height: 40px;
    }
    
    .timeline-dot i {
        font-size: 1rem;
    }
    
    .feature-timeline::before {
        left: 0;
    }
    
    .hero-title {
        font-size: 1.75rem !important;
    }
    
    .hero-desc {
        font-size: 1rem !important;
    }
    
    .section-badge {
        font-size: 0.8125rem;
        padding: 8px 16px;
    }
}

/* ========== 对角线时钟样式 ========== */
.hero-diagonal-frame {
    position: relative;
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

.diagonal-clock {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    height: 280px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    box-shadow: 
        0 0 0 8px rgba(16, 185, 129, 0.08),
        0 20px 60px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 2;
}

.clock-face {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

.clock-hand {
    position: absolute;
    bottom: 50%;
    left: 50%;
    transform-origin: bottom center;
    border-radius: 4px;
}

.clock-hour {
    width: 6px;
    height: 70px;
    background: linear-gradient(to top, #1e293b, #334155);
    margin-left: -3px;
    animation: timerHourRotate 43200s linear infinite;
}

.clock-minute {
    width: 4px;
    height: 100px;
    background: linear-gradient(to top, #10b981, #059669);
    margin-left: -2px;
    animation: timerMinuteRotate 3600s linear infinite;
}

@keyframes timerHourRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes timerMinuteRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.clock-center-dot {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, #10b981, #06b6d4);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
    z-index: 3;
}

.hero-diagonal-frame img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
}

/* ========== 顶部导航栏适配 ========== */
.downTop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 9999;
    display: none;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.downTop.show {
    display: flex;
}

.downTop-logo {
    height: 40px;
    width: auto;
    margin-right: 16px;
}

.downTop-title {
    color: var(--text-primary);
}

.downTopDowmload {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #ffffff !important;
    padding: 10px 24px;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.downTopDowmload:hover {
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
    transform: translateY(-2px);
    color: #ffffff !important;
}

.downTopDowmload i {
    font-size: 1.125rem;
}