/* ================= 全局样式重置与暗黑变量 ================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

:root {
    --bg-dark: #071120;
    --bg-card: #0F1E33;
    --bg-input: #172A45;
    --primary-text: #F1F5F9;
    --secondary-text: #94A3B8;
    --accent: #F5A623;
    --accent-hover: #D88B0E;
    --accent-danger: #EF4444;
    --border-color: rgba(255, 255, 255, 0.08);
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

body {
    background-color: var(--bg-dark);
    color: var(--primary-text);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ================= 暗黑悬浮导航栏 ================= */
header {
    background-color: rgba(7, 17, 32, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-chinese {
    font-family: 'Long Cang', cursive;
    font-size: 38px;
    color: var(--accent);
    text-shadow: 0 0 10px rgba(245, 166, 35, 0.3);
    line-height: 1;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 36px;
    align-items: center;
}

nav ul li a {
    color: var(--secondary-text);
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--accent);
}

/* ================= 页脚 ================= */
footer {
    background-color: var(--bg-dark);
    color: var(--primary-text);
    padding: 80px 24px 30px 24px;
    border-top: 5px solid var(--accent);
    margin-top: 60px;
}

.footer-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.footer-brand h3 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 20px;
}

.footer-brand h3 span {
    color: var(--accent);
}

.footer-brand p {
    color: var(--secondary-text);
    font-size: 14px;
    max-width: 400px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: var(--secondary-text);
    font-size: 14px;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--accent);
}

.footer-contact p {
    font-size: 14px;
    color: var(--secondary-text);
    margin-bottom: 12px;
}

.copyright {
    max-width: 1280px;
    margin: 30px auto 0 auto;
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.2);
}

/* ================= 全局响应式 ================= */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    nav {
        display: none;
    }

    .copyright {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

.form-status {
    margin-bottom: 0;
    padding: 28px 24px;
    border-radius: 12px;
    line-height: 1.6;
    text-align: center;
    animation: formStatusIn 0.45s ease-out;
}

.form-status-title {
    margin: 0 0 10px;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.form-status-text {
    margin: 0;
    font-size: 1.05rem;
    max-width: 28em;
    margin-inline: auto;
}

.form-status-success {
    background: rgba(34, 197, 94, 0.18);
    border: 1px solid rgba(74, 222, 128, 0.55);
    box-shadow: 0 0 0 1px rgba(34, 197, 94, 0.12), 0 12px 32px rgba(0, 0, 0, 0.25);
    color: #dcfce7;
}

.form-status-success .form-status-title {
    color: #4ade80;
}

.form-status-error {
    margin-bottom: 20px;
    background: rgba(239, 68, 68, 0.16);
    border: 1px solid rgba(248, 113, 113, 0.5);
    color: #fecaca;
}

.form-status-error .form-status-title {
    color: #f87171;
}

@keyframes formStatusIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}