/* 祝福鸭公共样式 */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --pink: #e84393;
    --pink-light: #fd79a8;
    --orange: #e17055;
    --yellow: #fdcb6e;
    --purple: #6c5ce7;
    --bg: #fffbf5;
    --bg-alt: #fff5ee;
    --bg-card: #ffffff;
    --text: #2d1b14;
    --text-muted: #7a6b63;
    --border: #f0e6dc;
    --radius: 20px;
    --max-w: 1100px;
    --shadow: 0 4px 20px rgba(232,67,147,.08);
    --shadow-hover: 0 8px 32px rgba(232,67,147,.15);
}
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    background: var(--bg); color: var(--text); line-height: 1.7; overflow-x: hidden;
}
a { color: var(--pink); text-decoration: none; transition: color .25s; }
a:hover { color: var(--purple); }

/* Navbar */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    backdrop-filter: blur(20px); background: rgba(255,251,245,.88);
    border-bottom: 1px solid var(--border);
}
.navbar-inner {
    max-width: var(--max-w); margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px; height: 60px;
}
.nav-brand { display: flex; align-items: center; gap: 8px; font-size: 1.2rem; font-weight: 800; color: var(--text); }
.nav-logo { font-size: 1.6rem; }
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a { color: var(--text-muted); font-size: .9rem; font-weight: 500; }
.nav-links a:hover { color: var(--pink); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px; border-radius: 50px;
    font-size: .95rem; font-weight: 600; border: none; cursor: pointer;
    transition: transform .2s, box-shadow .3s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
    background: linear-gradient(135deg, var(--pink), var(--orange));
    color: #fff; box-shadow: 0 4px 20px rgba(232,67,147,.3);
}
.btn-primary:hover { box-shadow: 0 8px 28px rgba(232,67,147,.4); color: #fff; }
.btn-outline {
    background: #fff; color: var(--text);
    border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--pink); color: var(--pink); }

/* Section */
section { padding: 90px 24px; position: relative; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
    display: inline-block; font-size: .78rem; font-weight: 600;
    color: var(--pink); letter-spacing: 2px; margin-bottom: 10px;
}
.section-header h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); font-weight: 700; margin-bottom: 14px; }
.section-header p { color: var(--text-muted); max-width: 520px; margin: 0 auto; font-size: 1.02rem; }

/* Footer */
footer { border-top: 1px solid var(--border); padding: 36px 24px; }
.footer-inner {
    max-width: var(--max-w); margin: 0 auto;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 12px;
}
.footer-brand { font-weight: 700; font-size: .9rem; }
.footer-brand span { color: var(--pink); }
.footer-info { color: var(--text-muted); font-size: .78rem; }

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .footer-inner { flex-direction: column; text-align: center; }
}

/* Animations */
.fade-up { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }