:root {
    --primary-color: #F94D22;
    --primary-dark: #F94D22;
    --primary-light: #FF9A76;
    --primary-glow: rgba(255, 107, 53, 0.3);
    --white: #FFFFFF;
    --dark-bg: #0A0A0F;
    --darker-bg: #050509;
    --card-bg: rgba(20, 20, 30, 0.7);
    --card-border: rgba(255, 107, 53, 0.15);
    --text-light: #F0F0F0;
    --text-muted: #A0A0B0;
    --accent-blue: #4D8AFF;
    --accent-purple: #9D4DFF;
    --glow-shadow: 0 0 20px rgba(255, 107, 53, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Inter', 'Microsoft YaHei', sans-serif;
}

body {
    background-color: var(--dark-bg);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 15px;
}

.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background:
            radial-gradient(circle at 20% 50%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, rgba(77, 138, 255, 0.08) 0%, transparent 50%),
            radial-gradient(circle at 40% 80%, rgba(157, 77, 255, 0.05) 0%, transparent 50%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* 头部样式 */
header {
    padding: 18px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

/* Logo图片容器 */
.logo-img {
    width: 70px;
    height: 70px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
}

.logo-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.logo-text {
    overflow: hidden;
}

.logo-text h1 {
    font-size: 20px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
    letter-spacing: -0.3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logo-text p {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
    letter-spacing: 1px;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 下载按钮容器 */
.download-btn-container {
    position: relative;
    flex-shrink: 0;
}

/* 统一的下载按钮样式 */
.download-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border: none;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    text-decoration: none;
    white-space: nowrap;
    width: auto;
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--glow-shadow);
}

.download-btn:hover::before {
    opacity: 1;
}

/* 英雄区域 */
.hero {
    padding: 130px 0 70px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1000px;
    margin: 0 auto;
}

.hero h2 {
    font-size: 38px;
    margin-bottom: 16px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -0.5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 10px;
}

.hero p {
    font-size: 17px;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

/* APP产品展示区域 */
.app-showcase {
    margin-top: 20px;
    padding: 30px;
    background: var(--card-bg);
    border-radius: 20px;
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.app-showcase h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: var(--text-light);
    text-align: center;
    font-weight: 700;
    white-space: nowrap;
}

.app-images {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 25px;
    flex-wrap: wrap;
}

.app-image-container {
    width: 200px;
    height: 360px;
    border-radius: 24px;
    overflow: hidden;
    border: 4px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    transition: all 0.4s ease;
    position: relative;
}

.app-image-container:hover {
    transform: translateY(-15px);
    border-color: rgba(255, 107, 53, 0.3);
    box-shadow: 0 25px 50px rgba(255, 107, 53, 0.2);
}

.app-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.app-image-container:hover img {
    transform: scale(1.05);
}

.app-image-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: var(--white);
    padding: 15px 10px 10px;
    text-align: center;
    font-size: 13px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.app-image-container:hover .app-image-label {
    opacity: 1;
    transform: translateY(0);
}

/* 二维码弹窗样式 */
.qrcode-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(15px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.qrcode-modal.show {
    opacity: 1;
    visibility: visible;
}

.qrcode-content {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid var(--card-border);
    backdrop-filter: blur(20px);
    max-width: 450px;
    width: 90%;
    text-align: center;
    position: relative;
    transform: translateY(30px) scale(0.95);
    transition: transform 0.4s ease;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
}

.qrcode-modal.show .qrcode-content {
    transform: translateY(0) scale(1);
}

.qrcode-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-light);
    font-size: 20px;
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.qrcode-close:hover {
    color: var(--primary-color);
    background: rgba(255, 107, 53, 0.2);
    transform: rotate(90deg);
}

.qrcode-content h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--text-light);
    font-weight: 700;
    white-space: nowrap;
}

.qrcode-content p {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.qrcode-container {
    display: flex;
    justify-content: center;
    margin-bottom: 25px;
}

.qrcode-box {
    text-align: center;
    padding: 25px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease;
}

.qrcode-box:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 107, 53, 0.3);
}

.qrcode-box img {
    width: 200px;
    height: 200px;
    border-radius: 10px;
    margin-bottom: 15px;
    background: white;
    padding: 12px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.qrcode-box p {
    font-size: 17px;
    color: var(--text-light);
    white-space: nowrap;
    font-weight: 600;
}

.qrcode-note {
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.5;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.qrcode-note p {
    margin-bottom: 8px;
    font-size: 14px;
}

/* 功能区域 */
.features {
    padding: 70px 0;
}

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

.section-title h2 {
    font-size: 30px;
    margin-bottom: 12px;
    color: var(--text-light);
    font-weight: 700;
    line-height: 1.1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 20px;
}

.section-title p {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.5;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 30px 22px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid var(--card-border);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-blue));
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 107, 53, 0.3);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--white);
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.05);
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 14px;
    color: var(--text-light);
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
}

/* 关于我们区域 */
.about {
    padding: 70px 0;
    background: rgba(5, 5, 9, 0.5);
    position: relative;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content p {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--text-light);
    position: relative;
    padding-left: 14px;
}

.about-content p::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 3px;
    height: calc(100% - 12px);
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-blue));
    border-radius: 2px;
}

/* 联系信息区域 */
.contact {
    padding: 70px 0 40px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.contact-card {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 26px 22px;
    border: 1px solid var(--card-border);
    transition: transform 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
}

.contact-card h3 {
    font-size: 18px;
    margin-bottom: 18px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    white-space: nowrap;
}

.contact-card h3 i {
    color: var(--primary-color);
    background: rgba(255, 107, 53, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info {
    list-style: none;
}

.contact-info li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 14px;
}

.contact-info li i {
    color: var(--primary-color);
    width: 16px;
    flex-shrink: 0;
}

/* 页脚 */
footer {
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    background: rgba(5, 5, 9, 0.8);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 13px;
    white-space: nowrap;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.copyright {
    margin-top: 20px;
    opacity: 0.7;
    font-size: 12px;
    line-height: 1.6;
}

/* ========== 响应式优化 ========== */

/* 大屏幕 (PC) */
@media (min-width: 1201px) {
    .hero h2 {
        font-size: 42px;
    }

    .hero p {
        font-size: 18px;
    }

    .section-title h2 {
        font-size: 32px;
    }

    .section-title p {
        font-size: 17px;
    }

    .about-content p {
        font-size: 17px;
    }

    .app-image-container {
        width: 220px;
        height: 396px;
    }
}

/* 中等屏幕 (平板) */
@media (max-width: 1200px) and (min-width: 769px) {
    .hero h2 {
        font-size: 36px;
    }

    .hero p {
        font-size: 17px;
    }

    .section-title h2 {
        font-size: 28px;
    }

    .feature-card h3 {
        font-size: 17px;
    }

    .feature-card p {
        font-size: 15px;
    }

    .app-image-container {
        width: 180px;
        height: 324px;
    }
}

/* 小屏幕 (手机) */
@media (max-width: 768px) {
    /* 头部优化 */
    header {
        padding: 14px 0;
    }

    .header-content {
        gap: 10px;
    }

    .logo {
        gap: 8px;
    }

    .logo-img {
        width: 45px;
        height: 45px;
    }

    .logo-text h1 {
        font-size: 17px;
    }

    .logo-text p {
        font-size: 10px;
        letter-spacing: 0.8px;
    }

    .download-btn {
        padding: 10px 18px;
        font-size: 15px;
    }

    /* 英雄区域优化 */
    .hero {
        padding: 110px 0 50px;
    }

    .hero h2 {
        font-size: 26px;
        margin-bottom: 14px;
        line-height: 1.1;
        padding: 0 5px;
    }

    .hero p {
        font-size: 15px;
        margin-bottom: 28px;
        padding: 0 8px;
        line-height: 1.5;
    }

    .hero-actions {
        gap: 10px;
        padding: 0 8px;
        margin-bottom: 40px;
    }

    .download-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    /* APP展示区域优化 */
    .app-showcase {
        margin-top: 20px;
        padding: 20px;
    }

    .app-images {
        gap: 20px;
    }

    .app-image-container {
        width: 150px;
        height: 270px;
    }

    /* 二维码弹窗优化 */
    .qrcode-content {
        padding: 30px 20px;
        width: 95%;
    }

    .qrcode-box img {
        width: 180px;
        height: 180px;
    }

    /* 功能区域优化 */
    .features {
        padding: 50px 0;
    }

    .section-title {
        margin-bottom: 35px;
    }

    .section-title h2 {
        font-size: 24px;
        margin-bottom: 10px;
        line-height: 1.1;
        padding: 0 15px;
    }

    .section-title p {
        font-size: 15px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 8px;
    }

    .feature-card {
        padding: 26px 18px;
    }

    .feature-card h3 {
        font-size: 17px;
        margin-bottom: 12px;
    }

    .feature-card p {
        font-size: 14px;
    }

    /* 关于我们区域 */
    .about {
        padding: 50px 0;
    }

    .about-content p {
        font-size: 15px;
        padding-left: 12px;
        line-height: 1.6;
    }

    /* 联系信息区域 */
    .contact {
        padding: 50px 0 25px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 8px;
    }

    .contact-card {
        padding: 22px 18px;
    }

    .contact-card h3 {
        font-size: 17px;
    }

    .contact-info li {
        font-size: 14px;
    }

    /* 页脚优化 */
    footer {
        padding: 30px 0;
        font-size: 13px;
    }

    .footer-links {
        gap: 15px;
    }

    .footer-links a {
        font-size: 12px;
    }

    .copyright {
        font-size: 11px;
        padding: 0 12px;
    }
}

/* 超小屏幕 (小手机) */
@media (max-width: 375px) {
    .hero h2 {
        font-size: 22px;
    }

    .hero p {
        font-size: 14px;
    }

    .logo-text h1 {
        font-size: 15px;
    }

    .download-btn {
        font-size: 14px;
        padding: 9px 16px;
    }

    .section-title h2 {
        font-size: 20px;
    }

    .feature-card h3 {
        font-size: 16px;
    }

    .contact-card h3 {
        font-size: 16px;
    }

    .app-image-container {
        width: 130px;
        height: 234px;
    }

    .qrcode-box img {
        width: 160px;
        height: 160px;
    }
}

/* 横屏模式优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 90px 0 30px;
    }

    .hero h2 {
        font-size: 24px;
        margin-bottom: 10px;
    }

    .app-showcase {
        display: none;
    }

    .qrcode-content {
        padding: 20px;
        max-height: 90vh;
        overflow-y: auto;
    }
}

/* 防换行类 */
.no-wrap {
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
}

/* 所有标题防换行 */
h1, h2, h3, h4, h5, h6 {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 图片加载占位符 */
.img-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-direction: column;
}