/* yt.igbd.cn 首页浅色主题样式（views/index.html 使用） */
:root {
    --brand: #e60000;
    --brand-dark: #cc0000;
    --brand-soft: #fff0f0;
    --brand-ring: #ffd7d7;
    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --line: #e2e8f0;
    --line-soft: #eef2f7;
    --panel: #f8fafc;
    --shadow: rgba(15, 23, 42, 0.08);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.container { width: min(1100px, 88%); margin: 0 auto; }

/* ===== Hero 区域 ===== */
.hero {
    background: linear-gradient(180deg, #eef2ff 0%, #ffffff 100%);
    border-bottom: 1px solid var(--line);
}
.hero-inner {
    width: min(1100px, 88%);
    margin: 0 auto;
    padding: 72px 0 80px;
    display: grid;
    grid-template-columns: 1.25fr 0.85fr;
    gap: 64px;
    align-items: center;
}
.hero-eyebrow {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 0.12em;
    color: var(--brand);
    background: var(--brand-soft);
    border: 1px solid var(--brand-ring);
    padding: 6px 14px;
    border-radius: 999px;
    font-weight: 600;
}
.accent { color: var(--brand); }
.hero h1 {
    font-size: clamp(32px, 5vw, 54px);
    line-height: 1.12;
    margin: 20px 0 18px;
    font-weight: 800;
    color: var(--slate-900);
    letter-spacing: -0.02em;
}
.hero-desc {
    color: var(--slate-600);
    line-height: 1.8;
    font-size: 16px;
    margin: 0 0 28px;
    max-width: 640px;
}
.hero-note { font-size: 12px; color: var(--slate-400); margin-top: 14px; }
.hero-note code {
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    color: var(--slate-600);
}

/* ===== 按钮 ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--brand);
    color: #fff;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    padding: 12px 20px;
    box-shadow: 0 4px 14px rgba(230, 0, 0, 0.25);
    transition: background 0.15s ease;
}
.btn-primary:hover { background: var(--brand-dark); }
.google-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: #fff;
    color: #1f2937;
    text-decoration: none;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    padding: 12px 20px;
    font-weight: 500;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.15s ease, border-color 0.15s ease;
}
.google-btn:hover { box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12); border-color: #b9c0c9; }
.google-btn svg { width: 20px; height: 20px; }
.google-btn-large { padding: 13px 24px; font-size: 16px; }

/* ===== 演示卡片 ===== */
.hero-card {
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 20px;
    padding: 28px;
    box-shadow: 0 24px 60px var(--shadow);
}
.hero-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--line-soft);
    padding-bottom: 14px;
}
.live-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 0 5px rgba(16, 185, 129, 0.15);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.3); }
    70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}
.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 20px;
    border-top: 1px solid var(--line-soft);
    padding-top: 20px;
}
.stat-box {
    background: var(--panel);
    border: 1px solid var(--line-soft);
    border-radius: 12px;
    padding: 16px;
}
.stat-label { font-size: 12px; color: var(--slate-500); font-weight: 500; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--slate-900); margin-top: 4px; letter-spacing: -0.01em; }
.live-card-demo {
    background: var(--panel);
    border: 1px solid var(--line-soft);
    border-radius: 14px;
    padding: 16px;
    margin-top: 20px;
}
.live-badge {
    display: inline-block;
    background: var(--brand-soft);
    color: var(--brand);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 8px;
}

/* ===== 功能特性 ===== */
.features { padding: 80px 0 64px; }
.features-header { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-eyebrow { font-size: 12px; letter-spacing: 0.16em; color: var(--brand); font-weight: 600; }
.section-title { font-size: 32px; font-weight: 800; color: var(--slate-900); margin: 12px 0 0; letter-spacing: -0.01em; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-item {
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 16px;
    padding: 26px;
    box-shadow: 0 8px 24px var(--shadow);
}
.feature-item .num { font-size: 13px; font-weight: 700; color: var(--brand); }
.feature-item h3 { font-size: 18px; color: var(--slate-900); margin: 12px 0 8px; }
.feature-item p { font-size: 14px; color: var(--slate-600); line-height: 1.7; margin: 0; }

/* ===== 隐私声明 ===== */
.privacy-note {
    background: var(--brand-soft);
    border: 1px solid var(--brand-ring);
    border-radius: 16px;
    padding: 32px;
    margin: 0 auto 80px;
}
.privacy-note h2 { color: var(--slate-900); font-size: 22px; margin: 0 0 12px; }
.privacy-note p { color: var(--slate-600); margin: 0 0 16px; }
.link-red { color: var(--brand); text-decoration: none; font-weight: 600; }
.link-red:hover { text-decoration: underline; }

/* ===== 响应式 ===== */
@media (max-width: 860px) {
    .hero-inner { grid-template-columns: 1fr; padding: 48px 0 56px; gap: 40px; }
    .feature-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 34px; }
}