/* ========================================================
   Ai-Mic / HiMouse 2026 现代极简未来科技风样式表
   Modern Premium Dark Theme with Ambient Glow & Glassmorphism
   ======================================================== */

:root {
    --bg-dark: #070a12;
    --bg-card: rgba(18, 26, 47, 0.65);
    --bg-card-hover: rgba(26, 38, 70, 0.85);
    --border-card: rgba(255, 255, 255, 0.08);
    --border-card-hover: rgba(56, 189, 248, 0.35);
    --primary: #3b82f6;
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
    --primary-gradient-hover: linear-gradient(135deg, #1d4ed8 0%, #0891b2 100%);
    --accent-cyan: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.18);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 基础重置 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 页面顶部流光背景效果 */
body::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.22) 0%, rgba(6, 182, 212, 0.12) 40%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* 容器 */
.container {
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* 导航栏 (Glassmorphism Floating Header) */
.topbar {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(7, 10, 18, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-card);
    transition: var(--transition);
}

.topbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

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

.brand-logo-img {
    height: 32px;
    width: auto;
    display: block;
    object-fit: contain;
}

.brand-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, #ffffff 40%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-link {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    padding: 6px 0;
}

.nav-link:hover {
    color: var(--text-main);
}

.nav-btn-support {
    padding: 8px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.nav-btn-support:hover {
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

/* 主 Banner 区 (Hero Section) */
.hero-section {
    padding: 70px 0 60px;
    text-align: center;
    position: relative;
}

/* AI 驱动徽章 */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.28);
    color: var(--accent-cyan);
    font-size: 0.88rem;
    font-weight: 500;
    margin-bottom: 24px;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.12);
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #38bdf8;
    box-shadow: 0 0 10px #38bdf8;
    animation: pulseGlow 2s infinite ease-in-out;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

/* 大标题 */
.hero-title {
    font-size: clamp(2.4rem, 5.5vw, 4.2rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
    background: linear-gradient(180deg, #ffffff 30%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.35rem);
    color: var(--text-muted);
    max-width: 680px;
    margin: 0 auto 40px;
    line-height: 1.6;
    font-weight: 400;
}

/* 双栏旗舰展示区：左侧海报展卡 + 右侧下载卡片 */
.hero-dual-layout {
    display: grid;
    grid-template-columns: 330px minmax(380px, 580px);
    gap: 52px;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 1060px;
    margin: 10px auto 0;
}

/* 硬件展示横幅 (Hardware Banner) - 左侧原图旗舰海报展卡 */
.mouse-showcase-wrap {
    margin: 0;
    max-width: 330px;
    width: 100%;
    text-align: center;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mouse-showcase-img {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 26px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.65), 0 0 45px rgba(56, 189, 248, 0.22);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mouse-showcase-img:hover {
    transform: translateY(-6px) scale(1.015);
    box-shadow: 0 32px 70px rgba(0, 0, 0, 0.8), 0 0 60px rgba(56, 189, 248, 0.35);
    border-color: rgba(56, 189, 248, 0.35);
}

/* 下载卡片容器 (Hero Download Card) */
.hero-download-card {
    width: 100%;
    margin: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 36px 36px 32px;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 40px rgba(37, 99, 235, 0.08);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.hero-download-card:hover {
    border-color: var(--border-card-hover);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.55), 0 0 50px rgba(6, 182, 212, 0.15);
}

.download-card-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
}

.download-card-title {
    font-size: 1.45rem;
    font-weight: 700;
    color: #ffffff;
}

.version-pill {
    font-size: 0.78rem;
    padding: 3px 10px;
    border-radius: 6px;
    background: rgba(56, 189, 248, 0.15);
    color: #38bdf8;
    font-weight: 600;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

/* 核心下载大按钮 */
.main-download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    width: 100%;
    padding: 18px 28px;
    border-radius: var(--radius-md);
    background: var(--primary-gradient);
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    border: none;
    cursor: pointer;
    box-shadow: 0 10px 30px -4px rgba(37, 99, 235, 0.55);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.main-download-btn:hover {
    background: var(--primary-gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 16px 36px -4px rgba(6, 182, 212, 0.65);
}

.main-download-btn:active {
    transform: translateY(0);
}

.btn-icon-svg {
    width: 28px;
    height: 28px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
    transition: transform 0.25s ease;
}

.main-download-btn:hover .btn-icon-svg {
    transform: translateY(2px);
}

.btn-text-group {
    text-align: left;
}

.btn-main-text {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.2;
}

.btn-sub-text {
    display: block;
    font-size: 0.8rem;
    font-weight: 400;
    opacity: 0.88;
    margin-top: 3px;
}

/* 下载卡片底部保障特征 */
.download-features {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    flex-wrap: wrap;
}

.feature-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.feature-pill-icon {
    width: 14px;
    height: 14px;
    fill: #10b981;
}



/* 功能特性专区 (Features Section) */
.section-features {
    padding: 80px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 10px;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 14px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* 功能卡片三列网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-card-hover);
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(56, 189, 248, 0.1);
}

.feature-card-media {
    width: 100%;
    height: 220px;
    background: rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 16px;
}

.feature-card-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.4s ease;
}

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

.feature-card-body {
    padding: 28px 24px 30px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.feature-card-badge {
    display: inline-block;
    align-self: flex-start;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    background: rgba(37, 99, 235, 0.15);
    color: #60a5fa;
    border: 1px solid rgba(37, 99, 235, 0.25);
    margin-bottom: 12px;
}

.feature-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 12px;
    line-height: 1.3;
}

.feature-card-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.65;
    flex: 1;
}

/* 核心优势四格矩阵 (Why Choose Us Matrix) */
.section-highlights {
    padding: 40px 0 80px;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.highlight-box {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    transition: var(--transition);
}

.highlight-box:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
}

.highlight-icon {
    font-size: 1.8rem;
    margin-bottom: 14px;
    display: inline-block;
}

.highlight-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 8px;
}

.highlight-desc {
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.5;
}

/* 底部页脚 (Modern Footer) */
.footer {
    background: #04070d;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 48px 0 36px;
    margin-top: 60px;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-brand {
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.footer-link {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--accent-cyan);
}

.beian-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.88rem;
    text-decoration: none;
    transition: var(--transition);
}

.beian-link:hover {
    color: #ffffff;
}

/* 响应式适配 (Responsive Media Queries) */
@media (max-width: 1024px) {
    .hero-dual-layout {
        grid-template-columns: 1fr;
        gap: 36px;
        max-width: 580px;
    }
    .mouse-showcase-wrap {
        max-width: 340px;
        margin: 0 auto;
        order: 2;
    }
    .hero-download-card {
        order: 1;
    }
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }
    .highlights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .topbar .container {
        height: 64px;
    }
    .nav-links {
        display: none; /* 移动端精简 */
    }
    .hero-section {
        padding: 48px 0 40px;
    }
    .hero-download-card {
        padding: 24px 20px 22px;
        border-radius: var(--radius-md);
    }
    .main-download-btn {
        padding: 16px 20px;
    }
    .btn-main-text {
        font-size: 1.1rem;
    }
    .highlights-grid {
        grid-template-columns: 1fr;
    }
    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }
}