* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: #f9fbff;
    color: #333;
    line-height: 1.6;
}

/* 通用工具类 */
.container {
    max-width: 80vw;
    margin: 0 auto;
    padding: 0 20px;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb); /* 蓝色按钮 */
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
}

/* 顶部导航 */
header {
    background: linear-gradient(0deg, #ffffff 0%, #b9d2fc 100%);
    padding-bottom: 60px;
}

.nav-bar {
    position: fixed;
    width: 100%;
    height: 80px;
    top: 0;
    left: 0;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1;
    display: flex;
    align-items: center;
}
.nav-container {
    width: 100%;
    max-width: 80vw;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-btn{
    width: 180px;
    height: 52px;
    background-size: contain;
    background-repeat: no-repeat;
    border-radius: 12px;
    cursor: pointer;
    user-select: none;
}
.bg-btn{
    width: 240px;
    height: 72px;
    background-size: contain;
    background-repeat: no-repeat;
    border-radius: 12px;
    cursor: pointer;
    user-select: none;
}

.logo {
    font-weight: 900;
    font-size: 24px;
    color: #1e293b;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Hero 区域 (顶部主要内容) */
.hero-section {
    display: flex;
    align-items: center;
    gap: 5vw;
    margin-top: 80px;
    padding: 60px 0;
    height: calc(100vh - 80px);
}

.hero-text {
    flex: 1;
}
.hero-text>p{
    margin-top: 40px;
}

.tag {
    display: inline-block;
    margin-bottom: 30px;
    background-color: #FF6F00;
    color: white;
    font-size: 28px;
    font-weight: 600;
    padding: 15px 40px;
    border-radius: 40px;
}

.hero-title {
    font-size: 60px;
    margin-bottom: 50px;
}

.hero-desc {
    color: #475569;
    margin-bottom: 50px;
    font-size: 22px;
}

.feature-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 50px;
    font-size: 18px;
    color: #334155;
}
.feature-item {
    display: flex;
    align-items: center;
    gap: 5px;
}
.feature-item img {
    width: 22px;
    height: 22px;
}

.hero-image {
    flex: 1.3;
}
@media (max-width: 1919px) {
    .tag {
        font-size: 24px;
        padding: 10px 30px;
        border-radius: 30px;
    }
    .hero-title{
        font-size: 48px;
    }
    .hero-desc{
        font-size: 18px;
    }
    .bg-btn{
        width: 200px;
        height: 60px;
    }
}
@media (max-width: 1440px) {
    .tag {
        font-size: 22px;
        padding: 10px 30px;
        border-radius: 30px;
    }
    .hero-title{
        font-size: 44px;
        margin-bottom: 20px;
    }
    .hero-desc{
        font-size: 16px;
        margin-bottom: 20px;
    }
    .hero-text>p {
        margin-top: 20px;
    }
    .feature-list {
        font-size: 14px;
    }
}
/* 视频编辑功能展示区 */
.features-section {
    padding: 60px 0;
    background-color: white;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 28px;
    margin-bottom: 10px;
}

.section-header p {
    color: #3b82f6;
    font-weight: bold;
    font-size: 32px;
}

/* 通用左右布局 (图片+文字) */
.split-layout {
    display: flex;
    gap: 60px;
    margin-bottom: 80px;
}

.split-layout.reverse {
    flex-direction: row-reverse;
}

.split-text {
    flex: 1;
}

.split-text h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.split-text p {
    color: #64748b;
    margin-bottom: 20px;
    font-size: 14px;
}

.split-img {
    flex: 1.2;
    height: 300px;
    border-radius: 8px;
    overflow: hidden;
}

/* 文字链接列表区 */
.link-container {
    margin-bottom: 60px;
    background: #f2f2f2;
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.link-title {
    font-size: 28px;
    font-weight: 300;
    margin-bottom: 20px;
}
.link-grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.link-column h4 {
    font-size: 16px;
    margin-bottom: 15px;
}

.link-column ul {
    list-style: none;
}

.link-column li {
    font-size: 12px;
    color: #64748b;
    margin-bottom: 8px;
    cursor: pointer;
}

.link-column li:hover {
    color: #3b82f6;
}
.split-layout.bg-gray{
    background: #f2f2f2;
    padding: 20px;
    margin-bottom: 0;
}
/* 用户评价区 */
.testimonials-section {
    background: linear-gradient(180deg, #ecf5ff 0%, rgba(245, 250, 255, 0) 100%);
    padding: 80px 0;
    text-align: center;
}

.testimonials-title {
    font-size: 36px;
    margin-bottom: 50px;
}

.highlight-number {
    color: #3b82f6;
    font-weight: bold;
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 两列布局 */
    gap: 20px;
    text-align: left;
}

.review-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    position: relative;
}

.stars {
    color: #eab308; /* 金色星星 */
    margin-bottom: 10px;
}

.review-text {
    font-size: 14px;
    color: #334155;
    margin-bottom: 20px;
    line-height: 1.5;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #cbd5e1;
}

.user-details h5 {
    font-size: 14px;
    margin-bottom: 2px;
}

.user-details span {
    font-size: 12px;
    color: #94a3b8;
}

.quote-icon {
    position: absolute;
    right: 20px;
    bottom: 20px;
    font-size: 40px;
    color: #dbeafe;
    font-family: serif;
}

/* 底部 CTA */
.footer-cta {
    margin-top: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-cta .btn-primary {
    font-size: 18px;
    padding: 15px 40px;
}

.footer-note {
    margin-top: 10px;
    color: #333333;
}

/* 悬浮按钮 (右侧) */
.floating-buttons {
    position: fixed;
    right: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    z-index: 999999;
    background: #fff;
    padding: 16px 12px;
    gap: 16px;
}

.float-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    text-decoration: none;
    color: #333;
    font-size: 14px;
    gap: 6px;
}