/* ===== 全局样式 ===== */
:root {
    --gold: #d4a843;
    --gold-hover: #e6c05a;
    --gold-glow: rgba(212, 168, 67, 0.25);
    --gray-light: #f8f9fa;
    --gray-border: #e9ecef;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #ffffff;
    color: #1a1a2e;
}

/* ===== 导航栏 ===== */
.navbar {
    padding: 12px 0;
}

.navbar .navbar-brand {
    font-size: 1.3rem;
    letter-spacing: -0.5px;
}

.navbar .navbar-brand .text-gold {
    color: var(--gold);
}

.navbar .nav-link {
    color: #4a5a6a !important;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 6px 16px;
    border-radius: 6px;
    transition: 0.2s;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: #1a1a2e !important;
    background: var(--gray-light);
}

/* ===== 按钮 ===== */
.btn-gold {
    background: var(--gold);
    border: none;
    color: #fff;
    font-weight: 600;
    padding: 8px 28px;
    border-radius: 50px;
    transition: 0.3s;
}

.btn-gold:hover {
    background: var(--gold-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--gold-glow);
}

.btn-gold-lg {
    padding: 12px 40px;
    font-size: 1.05rem;
}

/* ===== Hero 区 ===== */
.hero {
    padding: 80px 0 60px;
    background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: #1a1a2e;
    margin-bottom: 8px;
}

.hero .lead {
    font-size: 1.15rem;
    font-weight: 400;
}

/* ===== 新闻卡片 ===== */
.card {
    border-radius: 12px;
    transition: 0.25s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06) !important;
}

.card .card-body {
    padding: 24px;
}

.card .badge {
    font-weight: 500;
    font-size: 0.7rem;
    padding: 4px 12px;
    border-radius: 50px;
}

.card .card-title {
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.4;
    color: #1a1a2e;
}

.card .card-text {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #6a7a8a;
}

.text-gold {
    color: var(--gold);
}

/* ===== 注册页 / 成功页 ===== */
.card.border-0 {
    border-radius: 16px;
}

.card .form-control {
    border-radius: 10px;
    padding: 12px 16px;
    border: 1px solid var(--gray-border);
    transition: 0.2s;
}

.card .form-control:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 4px var(--gold-glow);
}

.card .form-label {
    font-size: 0.85rem;
    color: #2a3a4a;
}

.success-icon {
    font-size: 4rem;
    color: #28a745;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    .hero {
        padding: 50px 0 40px;
    }
    .card .card-body {
        padding: 20px;
    }
}