/* ============================================
   CSS 变量定义
   ============================================ */
:root {
    --bg: #050505;
    --bg-black: #050505;
    --nav-bg: #0a0a0a;
    --card-bg: rgba(255, 255, 255, 0.03);
    --primary: #00d2ff;
    --accent: #3a7bd5;
    --text-white: #ffffff;
    --text-dim: #a0a0a0;
}

/* ============================================
   全局重置样式
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
/* 全局容器：限制最大宽度并居中 */
.container {
    max-width: 1200px;  /* 黄金阅读宽度 */
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
    width: 100%;
}

/* 导航栏内部也需要容器，防止 Logo 和菜单跑到屏幕最边缘 */
.navbar-content {
    max-width: 1400px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}
body {
    background: var(--bg-black);
    background-color: var(--bg);
    color: white;
    color: var(--text-white);
    overflow-x: hidden;
    font-family: 'Segoe UI', 'PingFang SC', 'Inter', sans-serif;
}

/* ============================================
   通用官网风格导航栏
   ============================================ */
.navbar {
    position: fixed !important;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    padding: 0 5% !important;
    background: var(--nav-bg) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
    z-index: 99999 !important;
    transition: all 0.3s ease;
}

.navbar > div:first-child {
    max-width: 1400px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

/* Logo 样式 */
.logo {
    font-size: 1.5rem !important;
    font-weight: 800 !important;
    color: #fff !important;
    text-decoration: none !important;
    letter-spacing: 1px !important;
    text-transform: none !important;
    text-shadow: none !important;
}

.nav-links {
    display: flex !important;
    list-style: none !important;
    gap: 40px !important;
    height: auto !important;
    align-items: center;
}

.nav-links li {
    height: auto !important;
    display: flex !important;
    align-items: center !important;
}

/* 菜单文字优化 */
.nav-links a {
    text-decoration: none !important;
    color: rgba(255, 255, 255, 0.8) !important;
    font-size: 1rem !important;
    font-weight: 500 !important;
    transition: 0.3s !important;
    position: relative !important;
    padding: 0 !important;
    text-shadow: none !important;
}

/* 悬浮效果：文字变亮 */
.nav-links a:hover,
.nav-links a.active {
    color: var(--primary) !important;
}

/* 激活状态：底部横线指示器 */
.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -24px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary);
}

/* 页面滚动后的紧凑效果 */
.navbar.scrolled {
    height: 65px;
    background: rgba(0, 0, 0, 0.98);
}

/* ============================================
   Hero 区域样式（首页和设备页共用）
   ============================================ */
.hero,
.device-page-hero {
    padding-top: 100px;
    padding-bottom: 60px;
    text-align: center;
    background: radial-gradient(circle at center, #111 0%, #050505 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-content,
.device-page-hero-content {
    max-width: 1400px;
    width: 100%;
    z-index: 10;
}

.hero-content {
    padding: 0 5%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero h1,
.device-page-hero h1 {
    font-size: clamp(2rem, 6vw, 3rem);
    margin-bottom: 20px;
    background: linear-gradient(90deg, #fff, var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    filter: drop-shadow(0 0 20px rgba(0,210,255,0.3));
}

.subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: #fff;
    margin: 0 auto 20px auto;
    max-width: 800px;
    line-height: 1.6;
    text-align: center;
}

.hero .subtitle {
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: #888;
    margin-bottom: 30px;
}

/* ============================================
   首页特定样式
   ============================================ */
/* 特色卡片：毛玻璃与悬浮发光 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
    margin-top: 20px;
    max-width: 1400px;
    width: 100%;
    padding: 0 5%;
    margin-left: auto;
    margin-right: auto;
}

.feature-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: 0.3s;
}

.feature-item:hover {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-5px);
}

/* 核心按钮组 */
.cta-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    margin-bottom: 40px;
}

/* 展示图片 */
.hero-showcase-wrapper {
    max-width: 1400px;
    width: 100%;
    padding: 40px 5% 0 5%;
    margin: 0 auto;
}

.hero-showcase-img {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    display: block;
}

.btn {
    padding: 15px 35px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 700;
    transition: 0.3s;
}

.btn-primary {
    background: var(--primary);
    color: #000;
}

.btn-secondary {
    border: 1px solid #444;
    color: #fff;
}

.btn:hover {
    opacity: 0.9;
    transform: scale(1.05);
}

/* 首页响应式 */
@media (max-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding-top: 90px;
    }
    .hero-content {
        padding: 0 3%;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 15px;
        margin-bottom: 30px;
    }
    .cta-group {
        margin-top: 25px;
        margin-bottom: 30px;
        flex-direction: column;
        gap: 15px;
    }
    .btn {
        width: 100%;
        max-width: 300px;
    }
    .hero-showcase-wrapper {
        padding: 30px 3% 0 3%;
    }
    .hero-showcase-img {
        border-radius: 8px;
    }
    section > div > div[data-aos] {
        flex-direction: column !important;
    }
    section > div > div[data-aos] img {
        width: 100% !important;
        max-width: 100% !important;
    }
}

/* 图片展示区域 */
.screenshots {
    padding: 100px 5%;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

@media (max-width: 768px) {
    .screenshots {
        padding: 80px 3%;
    }
}

.img-container img {
    width: 70%;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: 0 0 100px rgba(0, 210, 255, 0.1);
    transition: 0.5s;
}

.img-container:hover img {
    transform: scale(1.02);
    border-color: var(--primary);
}

/* ============================================
   设备页面特定样式
   ============================================ */
.device-container {
    padding: 0 5% 100px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

#device-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
    gap: 30px;
}

/* 支持设备卡片设计 */
.device-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 30px;
    backdrop-filter: blur(10px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 30px;
    min-height: 200px;
    max-height: 220px;
    text-align: left;
}

.device-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0, 210, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.device-image {
    width: 160px;
    height: 160px;
    min-width: 160px;
    max-width: 160px;
    object-fit: contain;
    border-radius: 12px;
    filter: drop-shadow(0 0 10px rgba(0,210,255,0.2));
    background: rgba(255, 255, 255, 0.02);
    padding: 10px;
}

.device-card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    min-width: 0;
}

.device-card h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: #fff;
    font-weight: 600;
}

.device-card p {
    color: #a0a0a0;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
}

.card-btns {
    display: flex;
    gap: 12px;
    margin-top: auto;
}

.btn-tut,
.btn-down {
    flex: 1;
    min-width: 100px;
    padding: 12px;
    border-radius: 12px;
    text-align: center;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: 0.3s;
    white-space: nowrap;
}

.btn-tut {
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
}

.btn-tut:hover {
    background: rgba(255,255,255,0.1);
}

.btn-down {
    background: linear-gradient(90deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.3);
}

.btn-down:hover {
    filter: brightness(1.1);
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.3);
}

/* 设备页面响应式 */
@media (max-width: 1200px) {
    #device-grid {
        grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
        gap: 25px;
    }
    .device-card {
        min-height: 180px;
        max-height: 200px;
        padding: 25px;
        gap: 25px;
    }
    .device-image {
        width: 140px;
        height: 140px;
        min-width: 140px;
        max-width: 140px;
    }
}

@media (max-width: 768px) {
    .device-container {
        padding: 0 3% 80px;
    }
    #device-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .device-card {
        flex-direction: column;
        min-height: auto;
        max-height: none;
        padding: 25px;
        gap: 20px;
    }
    .device-image {
        width: 120px;
        height: 120px;
        min-width: 120px;
        max-width: 120px;
    }
    .device-card-content {
        width: 100%;
    }
    .device-card p {
        -webkit-line-clamp: 3;
        line-clamp: 3;
    }
    .btn-tut, .btn-down {
        min-width: 90px;
        font-size: 0.85rem;
    }
    .device-page-hero {
        padding-top: 90px;
        padding-left: 3%;
        padding-right: 3%;
        padding-bottom: 40px;
    }
    .navbar {
        padding: 0 3% !important;
    }
}

/* 按钮组容器 */
.cta-group {
    margin-top: 50px;
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn-main {
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
}

/* 固件下载按钮：呼吸蓝渐变 */
.primary-btn {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 10px 20px rgba(0, 210, 255, 0.2);
}

.primary-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 30px rgba(0, 210, 255, 0.4);
}

/* 文档中心按钮：磨砂玻璃边框 */
.secondary-btn {
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    transform: translateY(-5px);
}

/* 提示弹窗 (Toast) 样式 */
.toast-overlay {
    position: fixed;
    top: -100px; /* 初始隐藏在上方 */
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    opacity: 0;
}

.toast-overlay.show {
    top: 40px;
    opacity: 1;
}

.toast-content {
    background: rgba(20, 20, 20, 0.9);
    border: 1px solid var(--primary);
    box-shadow: 0 0 20px rgba(0, 210, 255, 0.4);
    padding: 15px 30px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 15px;
    color: white;
    backdrop-filter: blur(15px);
}

.toast-icon {
    font-size: 1.5rem;
}

/* 友情链接样式 */
.friend-links {
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 60px 5%;
    text-align: center;
}

.friend-links-content {
    max-width: 1400px;
    margin: 0 auto;
}

.friend-links h3 {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin-bottom: 40px;
    font-weight: 600;
}

.friend-links-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
}

.friend-link-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    transition: transform 0.3s;
}

.friend-link-item:hover {
    transform: translateY(-5px);
}

.friend-link-item a {
    color: var(--primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: 0.3s;
}

.friend-link-item a:hover {
    color: #fff;
    text-decoration: underline;
}

.friend-link-item .qrcode {
    width: 150px;
    height: 150px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    object-fit: contain;
}

.friend-link-item .qrcode-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .friend-links {
        padding: 40px 3%;
    }
    .friend-links-grid {
        gap: 40px;
    }
    .friend-link-item .qrcode {
        width: 120px;
        height: 120px;
    }
}

/* Footer 样式 */
footer {
    background: rgba(0, 0, 0, 0.5);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px 5%;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

footer p {
    margin: 0;
    line-height: 1.6;
}

footer a {
    color: var(--primary);
    text-decoration: none;
    transition: 0.3s;
}

footer a:hover {
    color: #fff;
    text-decoration: underline;
}

/* 模态框样式 - 可复用 */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 100000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.show {
    display: flex;
}

.modal-content {
    background: #1a1a1a;
    border: 1px solid var(--primary);
    border-radius: 12px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    color: #fff;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.modal-content h3 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.modal-content p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: 25px;
}

.modal-close {
    background: var(--primary);
    color: #000;
    border: none;
    padding: 10px 30px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}

.modal-close:hover {
    opacity: 0.9;
    transform: scale(1.05);
}