/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "思源黑体", "微软雅黑", sans-serif;
}

:root {
    /* 升级配色：更高级的科技蓝+低饱和虾红 */
    --tech-blue: #0F4C81;
    --tech-blue-light: #1A6BB8;
    --shrimp-red: #E85A4F;
    --orange: #F2994A;
    --light-gray: #F8FAFC;
    --dark-gray: #1E293B;
    --medium-gray: #64748B;
    --border-gray: #E2E8F0;
    --white: #FFFFFF;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);

    /* 间距 */
    --container-width: 1200px;
    --section-padding: 100px 0;
    --card-padding: 32px;
    --border-radius: 12px;
}

/* 基础样式 */
body {
    color: var(--dark-gray);
    background-color: var(--light-gray);
    scroll-behavior: smooth;
    line-height: 1.7;
}

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

.section {
    padding: var(--section-padding);
    position: relative;
}

.section-title {
    font-size: 36px;
    text-align: center;
    margin-bottom: 70px;
    color: var(--dark-gray);
    position: relative;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.section-title::after {
    content: "";
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--tech-blue), var(--shrimp-red));
    margin: 20px auto 0;
    border-radius: 2px;
}

/* 移除按钮相关样式 */
.btn, .fixed-cta, .anchor-nav {
    display: none !important;
}

/* 首屏 Hero 样式（优化视觉） */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(15, 76, 129, 0.85), rgba(15, 76, 129, 0.9)), url('../images/bg-hero.jpg') no-repeat center center;
    background-size: cover;
    display: flex;
    align-items: center;
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* 首屏装饰元素 */
.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
    z-index: 1;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero .logo {
    width: 100px;
    margin-bottom: 30px;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
}

.hero h1 {
    font-size: 72px;
    margin-bottom: 20px;
    color: var(--white);
    font-weight: 800;
    letter-spacing: 2px;
    text-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.hero h2 {
    font-size: 28px;
    margin-bottom: 30px;
    font-weight: 400;
    color: var(--orange);
    letter-spacing: 1px;
}

.hero-tagline {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 0;
    font-size: 16px;
}

.hero-meta .status {
    color: var(--orange);
    font-weight: 600;
    background: rgba(255,255,255,0.1);
    padding: 8px 20px;
    border-radius: 30px;
}

.hero-meta .advantages {
    background: rgba(255,255,255,0.1);
    padding: 8px 20px;
    border-radius: 30px;
}
/* 新增购买按钮样式 */
.hero-buy-btn {
    margin-top: 40px;
}

.buy-btn {
    display: inline-block;
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--shrimp-red), #d14a40);
    color: var(--white);
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    border-radius: 50px;
    box-shadow: 0 8px 20px rgba(232, 90, 79, 0.3);
    transition: all 0.4s ease;
    letter-spacing: 1px;
}

.buy-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(232, 90, 79, 0.4);
    background: linear-gradient(135deg, #d14a40, var(--shrimp-red));
}

/* 移动端适配 */
@media (max-width: 768px) {
    .buy-btn {
        padding: 14px 36px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .buy-btn {
        padding: 12px 30px;
        font-size: 15px;
        width: 80%;
    }
}

/* 域名价值解析（优化卡片） */
.value {
    background-color: var(--white);
}

.value-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 40px;
}

.value .card {
    background-color: var(--white);
    padding: var(--card-padding);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
    border: 1px solid var(--border-gray);
    position: relative;
    overflow: hidden;
}

/* 卡片装饰 */
.value .card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--tech-blue), var(--shrimp-red));
}

.value .card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--tech-blue-light);
}

.card-icon {
    font-size: 40px;
    color: var(--tech-blue);
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--tech-blue-light), var(--tech-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.value .card h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--dark-gray);
    font-weight: 700;
}

.value .card p {
    line-height: 1.8;
    color: var(--medium-gray);
    font-size: 16px;
}

/* 应用场景（优化） */
.scenarios {
    background-color: var(--light-gray);
}

.scenario-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.scenarios .card {
    text-align: center;
    padding: var(--card-padding);
    border-radius: var(--border-radius);
    background-color: var(--white);
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
    border: 1px solid var(--border-gray);
}

.scenarios .card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--tech-blue-light);
}

.scenario-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

.scenarios .card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--dark-gray);
    font-weight: 700;
}

.scenarios .card p {
    line-height: 1.8;
    color: var(--medium-gray);
    font-size: 16px;
}

.more-scenarios {
    text-align: center;
    color: var(--tech-blue);
    font-weight: 600;
    font-size: 18px;
    background: rgba(15, 76, 129, 0.05);
    padding: 12px 30px;
    border-radius: 30px;
    display: inline-block;
    margin: 0 auto;
}

/* 购买优势（优化布局） */
.advantages {
    background-color: var(--white);
}

.advantage-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(540px, 1fr));
    gap: 30px;
}

.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: 25px;
    background-color: var(--light-gray);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateX(5px);
}

.advantage-item i {
    font-size: 36px;
    color: var(--tech-blue);
    margin-top: 4px;
    background: linear-gradient(135deg, var(--tech-blue-light), var(--tech-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.advantage-item h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--dark-gray);
    font-weight: 700;
}

.advantage-item p {
    line-height: 1.8;
    color: var(--medium-gray);
    font-size: 16px;
}

/* 联系咨询（优化布局+突出联系方式） */
.contact {
    background: linear-gradient(180deg, var(--white) 0%, var(--light-gray) 100%);
    padding-bottom: 120px;
}

.contact-wrapper {
    display: flex;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 40px;
    width: 100%;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 30px;
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.contact-item:hover {
    box-shadow: var(--shadow-hover);
}

/* 不同联系方式项的配色区分 */
.phone-item {
    border-left: 6px solid var(--tech-blue);
}

.qrcode-item {
    border-left: 6px solid var(--shrimp-red);
}

.email-item {
    border-left: 6px solid var(--orange);
}

.contact-item i {
    font-size: 40px;
    color: var(--tech-blue);
    background: linear-gradient(135deg, var(--tech-blue-light), var(--tech-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.qrcode-item i {
    background: linear-gradient(135deg, var(--shrimp-red), #d14a40);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.email-item i {
    background: linear-gradient(135deg, var(--orange), #e58a3f);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-item h3 {
    font-size: 22px;
    margin-bottom: 10px;
    color: var(--dark-gray);
    font-weight: 700;
}

.contact-item p {
    color: var(--medium-gray);
    font-size: 18px;
    font-weight: 500;
}

.tag {
    background-color: var(--shrimp-red);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 14px;
    margin-left: 10px;
}

.qrcode {
    width: 140px;
    height: 140px;
    border: 2px solid var(--border-gray);
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.response-tip {
    color: var(--medium-gray);
    font-size: 16px;
    margin-top: 20px;
    text-align: center;
    background: rgba(15, 76, 129, 0.05);
    padding: 15px;
    border-radius: 8px;
}

/* 页脚（优化视觉） */
.footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo img {
    width: 80px;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
}

.footer-meta {
    text-align: right;
    font-size: 16px;
    line-height: 2;
}

.footer-meta p {
    margin-bottom: 10px;
    color: #CBD5E1;
}

.partner-logos img {
    height: 30px;
    margin-bottom: 10px;
    filter: brightness(0.9);
}

.privacy {
    color: var(--orange);
    font-weight: 500;
}

.copyright {
    color: #94A3B8;
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
}

/* 响应式设计（优化移动端） */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 56px;
    }
    
    .advantage-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }
    
    .section-title {
        font-size: 30px;
        margin-bottom: 50px;
    }
    
    .hero h1 {
        font-size: 48px;
    }
    
    .hero h2 {
        font-size: 24px;
    }
    
    .hero-tagline {
        font-size: 18px;
    }
    
    .hero-meta {
        flex-direction: column;
        gap: 15px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-meta {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 38px;
    }
    
    .value-cards, .scenario-cards {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .contact-item p {
        font-size: 16px;
    }
    
    .qrcode {
        width: 120px;
        height: 120px;
    }
}

/* 滚动渐入动画（优化） */
.section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}