/* 聆风音乐门户站 - 专业简洁大方（参考腾讯云/阿里云官网风格） */
:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #eef2ff;
    --bg: #ffffff;
    --bg-gray: #f7f8fa;
    --text-1: #1f2329;
    --text-2: #4e5969;
    --text-3: #86909c;
    --border: #e5e6eb;
    --success: #00b42a;
    --shadow: 0 4px 20px rgba(31, 35, 41, .08);
    --radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text-1); background: var(--bg); line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 10px 24px; border-radius: 8px; font-size: 15px; font-weight: 600;
    border: 1px solid transparent; cursor: pointer; transition: all .2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { background: var(--primary-light); }

/* 顶部导航 */
.nav {
    position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(10px); border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--primary); }
.logo-icon {
    width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, #6366f1, #8b5cf6);
    display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--text-2); font-size: 15px; transition: color .2s; }
.nav-links a:hover { color: var(--primary); }
.nav-actions { display: flex; gap: 12px; }

/* Hero */
.hero {
    position: relative; background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 60%, #a855f7 100%);
    color: #fff; padding: 96px 0 110px; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; width: 480px; height: 480px; border-radius: 50%;
    background: rgba(255, 255, 255, .08); top: -160px; right: -120px;
}
.hero::after {
    content: ''; position: absolute; width: 360px; height: 360px; border-radius: 50%;
    background: rgba(255, 255, 255, .06); bottom: -140px; left: -80px;
}
.hero-inner { position: relative; z-index: 1; text-align: center; max-width: 780px; margin: 0 auto; }
.hero h1 { font-size: 52px; font-weight: 800; letter-spacing: 1px; margin-bottom: 18px; }
.hero p { font-size: 18px; opacity: .92; margin-bottom: 40px; }
.hero-btns { display: flex; gap: 16px; justify-content: center; }

/* 区块通用 */
.section { padding: 72px 0; }
.section-gray { background: var(--bg-gray); }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head h2 { font-size: 32px; font-weight: 700; margin-bottom: 10px; }
.section-head p { color: var(--text-3); font-size: 15px; }

/* 特性 */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 24px; transition: all .25s; text-align: center;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary); }
.feature .icon { font-size: 40px; margin-bottom: 16px; }
.feature h3 { font-size: 18px; margin-bottom: 8px; }
.feature p { color: var(--text-3); font-size: 14px; }

/* 产品 */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 34px 28px; transition: all .25s; cursor: pointer;
}
.product:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary); }
.product h3 { font-size: 20px; margin-bottom: 10px; }
.product p { color: var(--text-3); font-size: 14px; margin-bottom: 18px; }
.product .more { color: var(--primary); font-size: 14px; font-weight: 600; }

/* 公告 */
.news-list { max-width: 860px; margin: 0 auto; }
.news-item {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 22px 26px; margin-bottom: 14px; transition: all .2s;
}
.news-item:hover { box-shadow: var(--shadow); }
.news-item .n-title { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.news-item .n-date { color: var(--text-3); font-size: 13px; margin-bottom: 8px; }
.news-item .n-content { color: var(--text-2); font-size: 14px; }

/* 页脚 */
.footer { background: #1d2129; color: #c9cdd4; padding: 40px 0 30px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.footer .f-logo { color: #fff; font-weight: 700; font-size: 18px; }
.footer .f-links { display: flex; gap: 20px; font-size: 14px; }
.footer .f-links a:hover { color: #fff; }
.footer .f-copy { margin-top: 16px; font-size: 13px; color: #6b7280; text-align: center; }

/* 移动端 */
@media (max-width: 900px) {
    .features { grid-template-columns: repeat(2, 1fr); }
    .products { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}
@media (max-width: 560px) {
    .hero { padding: 64px 0 76px; }
    .hero h1 { font-size: 34px; }
    .hero p { font-size: 15px; }
    .hero-btns { flex-direction: column; align-items: center; }
    .hero-btns .btn { width: 220px; }
    .features { grid-template-columns: 1fr; }
    .section { padding: 48px 0; }
    .section-head h2 { font-size: 26px; }
    .nav-actions .btn-outline { display: none; }
}