:root {
    --color-primary: #00796B; /* Deep Teal */
    --color-primary-light: #4DB6AC; /* Light Teal */
    --color-accent: #FF7F50; /* Coral */
    --color-bg: #F8FDFD; /* Very light teal background, almost white */
    --color-text: #1F2937;
    --color-text-light: #4B5563;
    
    --radius-sm: 12px;
    --radius-md: 24px;
    --radius-lg: 36px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Background Blobs */
.bg-blob { position: absolute; border-radius: 50%; filter: blur(100px); z-index: -1; opacity: 0.5; animation: drift 20s infinite alternate ease-in-out; }
.blob-1 { width: 600px; height: 600px; background: #E0F2F1; top: -100px; left: -200px; }
.blob-2 { width: 500px; height: 500px; background: #E8F5E9; top: 40%; right: -150px; animation-delay: -5s; }
.blob-3 { width: 400px; height: 400px; background: #B2DFDB; bottom: -100px; left: 20%; animation-delay: -10s; }
@keyframes drift { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(50px, 100px) scale(1.1); } }

/* Layout */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 24px;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 80px;
}
.logo-img { width: 72px; height: 72px; border-radius: 18px; box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.logo-text-block h1 { font-size: 32px; font-weight: 800; color: #111; display: flex; align-items: baseline; gap: 8px; margin-bottom: 4px;}
.logo-en { font-size: 18px; font-weight: 500; color: var(--color-text-light); }
.logo-text-block p { color: var(--color-text-light); font-size: 16px; }

/* Hero */
.hero-split {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 100px;
}
.hero-left { flex: 1; max-width: 500px; }
.hero-headline { font-size: 56px; font-weight: 800; margin-bottom: 24px; line-height: 1.2; letter-spacing: -1px; }
.text-teal { color: var(--color-primary-light); }
.hero-desc { font-size: 18px; color: var(--color-text-light); margin-bottom: 40px; line-height: 1.8; }

.format-icons { display: flex; gap: 24px; margin-bottom: 16px; }
.format-item { display: flex; flex-direction: column; align-items: center; gap: 10px; font-size: 14px; font-weight: 500; color: var(--color-text-light); }
.icon-circle { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px; box-shadow: 0 4px 12px rgba(0,0,0,0.04); }
.bg-teal-light { background: #E0F2F1; }
.bg-purple-light { background: #F3E5F5; }
.bg-yellow-light { background: #FFF9C4; }
.bg-green-light { background: #E8F5E9; }

.format-footer { font-size: 14px; color: #9CA3AF; font-weight: 500; margin-top: 10px; }

.hero-right { flex: 1; display: flex; justify-content: flex-end; }
.mockup-img { max-width: 340px; border-radius: 40px; box-shadow: 0 30px 60px rgba(0,0,0,0.1); }
.floating { animation: float 6s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-20px); } }

/* Features */
.feature-list { display: flex; flex-direction: column; gap: 32px; margin-bottom: 120px; }
.feature-row-card {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,1);
    border-radius: var(--radius-md);
    padding: 32px 40px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.04);
    transition: transform 0.3s ease;
}
.feature-row-card:hover { transform: translateY(-5px); box-shadow: 0 15px 50px rgba(0,121,107,0.08); }

.f-icon-container { width: 88px; height: 88px; border-radius: 50%; background: #F0FDF4; display: flex; align-items: center; justify-content: center; font-size: 40px; flex-shrink: 0; box-shadow: inset 0 0 0 1px rgba(0,0,0,0.03); }
.f-text-container { flex: 1; padding: 0 40px; }
.f-text-container h3 { font-size: 22px; margin-bottom: 12px; color: #111; font-weight: 700; }
.f-text-container p { color: var(--color-text-light); line-height: 1.6; font-size: 16px; }

.f-graphic-container { width: 240px; height: 140px; border-radius: 16px; flex-shrink: 0; position: relative; overflow: hidden; background: #F3F4F6; }
.graphic-mock { width: 100%; height: 100%; background: linear-gradient(135deg, rgba(255,255,255,0.4), rgba(255,255,255,0.1)); }
.placeholder-1 { background: linear-gradient(135deg, #E0F2F1, #B2DFDB); }
.placeholder-2 { background: linear-gradient(135deg, #E3F2FD, #BBDEFB); }
.placeholder-3 { background: linear-gradient(135deg, #F3E5F5, #E1BEE7); }
.placeholder-4 { background: linear-gradient(135deg, #FFF9C4, #FFF59D); }
.placeholder-5 { background: linear-gradient(135deg, #E8F5E9, #C8E6C9); }
.placeholder-6 { background: linear-gradient(135deg, #FBE9E7, #FFCCBC); }

/* CTA Footer */
.bottom-cta { text-align: center; margin-bottom: 40px; padding-top: 40px; }
.slogan { font-size: 28px; font-weight: 600; color: var(--color-primary); margin-bottom: 40px; }

.store-buttons { display: flex; justify-content: center; gap: 24px; margin-bottom: 40px; }
.store-btn {
    display: flex; align-items: center; padding: 14px 40px; border-radius: 100px;
    text-decoration: none; color: white; transition: transform 0.2s;
}
.store-btn:hover { transform: scale(1.05); }
.btn-black { background: #111; }
.btn-green { background: #3DDC84; } /* Android Green */
.store-icon { width: 36px; height: 36px; margin-right: 14px; }
.btn-text { display: flex; flex-direction: column; text-align: left; }
.btn-text .small { font-size: 13px; opacity: 0.9; line-height: 1; margin-bottom: 4px;}
.btn-text .big { font-size: 22px; font-weight: 700; line-height: 1; }

.footer-note { font-size: 15px; color: #9CA3AF; letter-spacing: 1px; }

/* Responsive */
@media (max-width: 768px) {
    .header { flex-direction: column; align-items: center; text-align: center; margin-bottom: 40px; }
    .hero-split { flex-direction: column; text-align: center; margin-bottom: 60px; }
    .hero-headline { font-size: 40px; }
    .hero-right { justify-content: center; margin-top: 40px; }
    .format-icons { justify-content: center; flex-wrap: wrap; }
    
    .feature-row-card { flex-direction: column; text-align: center; padding: 40px 24px; }
    .f-icon-container { margin-bottom: 24px; }
    .f-text-container { padding: 0; margin-bottom: 32px; }
    .f-graphic-container { width: 100%; height: 180px; }
    
    .store-buttons { 
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(248, 253, 253, 0.9);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        padding: 16px 20px;
        margin: 0;
        border-top: 1px solid rgba(0,0,0,0.05);
        flex-direction: row;
        gap: 12px;
    }
    .store-buttons .store-btn {
        flex: 1;
        padding: 12px 0;
        justify-content: center;
    }
    .store-icon { margin-right: 8px; width: 24px; height: 24px; }
    .btn-text .small { font-size: 10px; margin-bottom: 2px; }
    .btn-text .big { font-size: 16px; }
    
    .bottom-cta { padding-bottom: 100px; } /* 底部留白，防止内容被吸底按钮遮挡 */
    .slogan { font-size: 22px; padding: 0 16px; }

    /* 禁用移动端高性能消耗的模糊动画，防止滚屏卡顿 */
    .bg-blob {
        animation: none !important;
        filter: blur(60px);
    }
}