/* ========== 全局样式 ========== */
:root {
    --primary: #1a3a5c;
    --primary-light: #2d5f8a;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --bg-light: #f8fafc;
    --bg-section: #f1f5f9;
    --border-color: #e2e8f0;
}
/** {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}*/
body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
}
a {
    text-decoration: none;
    color: inherit;
}
.section-title {
    text-align: center;
    margin-top: 20px;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}
.section-title p {
    font-size: 16px;
    color: var(--text-gray);
    /*max-width: 600px;*/
    margin: 0 auto;
}

/* ========== 导航栏 ========== */
.nav-wrap {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--primary);
    transition: box-shadow 0.3s;
}
.nav-wrap.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.nav-inner {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 24px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.nav-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), #60a5fa);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
    font-weight: 800;
}
.nav-links {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    white-space: nowrap;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 20px;
    white-space: nowrap;
    margin-left: 32px;
    flex-shrink: 0;
}
.nav-member {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
    margin-left: 24px;
}
.nav-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 500;
    transition: color 0.2s;
    /* 长语言文本（如越南语/fr/es 的“FAQ”）禁止换行与压缩，保持单行完整显示 */
    white-space: nowrap;
    flex-shrink: 0;
}
.nav-links a:hover {
    color: #fff;
}
.nav-cta {
    background: var(--accent);
    color: #fff !important;
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 13px !important;
    transition: background 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}
.nav-cta:hover {
    background: var(--accent-hover);
}

/* ========== 语言切换下拉菜单 ========== */
.lang-dropdown {
    position: relative;
    flex-shrink: 0;
}
.lang-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.75);
    cursor: pointer;
    padding: 5px 8px;
    border-radius: 6px;
    transition: all 0.2s;
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
    white-space: nowrap;
}
.lang-toggle:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.5);
}
.lang-toggle svg {
    width: 16px;
    height: 16px;
}
.lang-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    min-width: 150px;
    padding: 4px 0;
    z-index: 1001;
}
.lang-menu.show {
    display: block;
}

/* ========== 移动端导航切换按钮 ========== */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 6px;
    cursor: pointer;
    padding: 8px;
    transition: border-color 0.2s;
}
.nav-toggle:hover {
    border-color: rgba(255,255,255,0.5);
}
.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
}
/* 打开时变成 X */
.nav-wrap.active .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-wrap.active .nav-toggle span:nth-child(2) {
    opacity: 0;
}
.nav-wrap.active .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
}

.lang-menu a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 14px;
    color: var(--text-gray);
    transition: all 0.15s;
    white-space: nowrap;
}
.lang-menu a:hover {
    background: var(--bg-section);
    color: var(--accent);
}
.lang-menu a.active {
    color: var(--accent);
    font-weight: 600;
}
.lang-menu a.active::after {
    content: "\2713";
    margin-left: auto;
    font-size: 12px;
}

/* ========== Hero区域 ========== */
.hero {
    padding: 160px 24px 100px;
    background: linear-gradient(160deg, #f0f7ff 0%, #e8f0fe 40%, #f8fafc 100%);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(
        circle,
        rgba(59, 130, 246, 0.08) 0%,
        transparent 70%
    );
    border-radius: 50%;
}
.hero::after {
    content: "";
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(
        circle,
        rgba(26, 58, 92, 0.06) 0%,
        transparent 70%
    );
    border-radius: 50%;
}
.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 1;
}
.hero-text {
    flex: 1;
}
.hero-badge {
    display: inline-block;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}
.hero-text h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--primary);
    margin-bottom: 20px;
}
.hero-text h1 span {
    color: var(--accent);
}
.hero-text p {
    font-size: 18px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 520px;
}
.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
    padding: 14px 36px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
    cursor: pointer;
}
.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.3);
}
.btn-outline {
    background: #fff;
    color: var(--primary);
    padding: 14px 36px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    border: 2px solid var(--border-color);
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}
.hero-code-card {
    background: var(--primary);
    border-radius: 12px;
    padding: 0;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(26, 58, 92, 0.2);
    overflow: hidden;
}
.code-card-header {
    background: rgba(255, 255, 255, 0.08);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.code-dot.red {
    background: #ff5f57;
}
.code-dot.yellow {
    background: #febc2e;
}
.code-dot.green {
    background: #28c840;
}
.code-card-body {
    padding: 20px 24px;
    font-family: "Cascadia Code", "Fira Code", Consolas, monospace;
    font-size: 13px;
    line-height: 1.8;
    color: #e2e8f0;
}
.code-card-body .code-keyword {
    color: #7dd3fc;
}
.code-card-body .code-func {
    color: #fbbf24;
}
.code-card-body .code-string {
    color: #86efac;
}
.code-card-body .code-comment {
    color: #64748b;
}
.code-card-body .code-line {
    display: block;
}

/* ========== 门户导航 ========== */
.portal {
    padding: 80px 20px;
    background: var(--bg-light);
}
.portal-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}
.portal-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.portal-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    border-radius: 4px 0 0 4px;
    transition: width 0.3s ease;
}
.portal-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}
.portal-card:hover::before {
    width: 6px;
}
.portal-card .portal-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: transform 0.3s ease;
}
.portal-card:hover .portal-icon {
    transform: scale(1.05);
}
.portal-card .portal-info {
    flex: 1;
    min-width: 0;
}
.portal-card .portal-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 4px;
}
.portal-card .portal-info p {
    font-size: 13px;
    color: var(--text-gray);
    margin: 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    overflow: hidden;
}
.portal-card .portal-arrow {
    flex-shrink: 0;
    color: var(--text-gray);
    opacity: 0;
    transform: translateX(-5px);
    transition: all 0.3s ease;
}
.portal-card:hover .portal-arrow {
    opacity: 1;
    transform: translateX(0);
}
/* Portal color variants */
.portal-blue .portal-icon { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.portal-blue::before { background: #3b82f6; }
.portal-purple .portal-icon { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.portal-purple::before { background: #8b5cf6; }
.portal-green .portal-icon { background: linear-gradient(135deg, #10b981, #059669); }
.portal-green::before { background: #10b981; }
.portal-orange .portal-icon { background: linear-gradient(135deg, #f59e0b, #d97706); }
.portal-orange::before { background: #f59e0b; }
.portal-cyan .portal-icon { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.portal-cyan::before { background: #06b6d4; }

/* ========== 特性区域 ========== */
.features {
    padding: 100px 24px;
    background: #fff;
}
.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.feature-card {
    padding: 36px 28px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    background: #fff;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: transparent;
}
.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}
.feature-icon.blue {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
}
.feature-icon.green {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}
.feature-icon.purple {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}
.feature-icon.orange {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}
.feature-icon.cyan {
    background: rgba(6, 182, 212, 0.1);
    color: #06b6d4;
}
.feature-icon.rose {
    background: rgba(244, 63, 94, 0.1);
    color: #f43f5e;
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}
.feature-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ========== 工作流程 ========== */
.workflow {
    padding: 100px 24px;
    background: var(--bg-section);
}
.workflow-steps {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}
.workflow-step {
    display: flex;
    align-items: flex-start;
    gap: 28px;
    padding: 32px 0;
    position: relative;
}
.step-num {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    position: relative;
    z-index: 1;
}
.workflow-step:not(:last-child)::before {
    content: "";
    position: absolute;
    left: 23px;
    top: 80px;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}
.step-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.step-content p {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ========== 数据亮点 ========== */
.stats {
    padding: 80px 24px;
    background: var(--primary);
    text-align: center;
}
.stats-inner {
    max-width: 1000px;
    margin: 0 auto;
    display: inline-flex;
    gap: 80px;
    text-align: center;
}
.stat-item h3 {
    font-size: 42px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
}
.stat-item p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
}

/* ========== 价格预览 ========== */
.pricing {
    padding: 100px 24px;
    background: #fff;
}
.pricing-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.pricing-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 36px 28px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    background: #fff;
}
.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}
.pricing-card.featured {
    border-color: var(--accent);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.15);
}
.pricing-card.featured::before {
    content: "推荐 Recommended";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: #fff;
    padding: 2px 16px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
}
.pricing-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.pricing-card .price {
    font-size: 40px;
    font-weight: 800;
    color: var(--primary);
    margin: 16px 0;
}
.pricing-card .price span {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-gray);
}
.pricing-card .price small {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-gray);
}
.pricing-card .pro-duration-wrap {
    text-align: left;
    margin: 4px 0 14px;
}
.pricing-card .pro-duration-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-gray);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}
.pricing-card .pro-duration {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    background: var(--bg-light);
    cursor: pointer;
    outline: none;
    transition: all 0.2s;
}
.pricing-card .pro-duration:hover,
.pricing-card .pro-duration:focus {
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}
.pricing-card.featured .price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 2px;
    margin: 8px 0 6px;
}
.pricing-card.featured .price .price-symbol {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}
.pricing-card.featured .price .price-amount {
    font-size: 54px;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(120deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.pricing-card.featured .price .price-unit {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-gray);
}
.pricing-card.featured .price .price-original {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-gray);
    margin-left: 6px;
}
.pricing-card .pro-total-line {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-gray);
    margin: 2px 0 10px;
}
.pricing-card .pro-savings {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, #16b364, #0ea06f);
    color: #fff;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
    margin-bottom: 8px;
}
.pricing-card .pro-savings .pro-savings-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.pricing-card .pro-savings .pro-savings-tag::before {
    content: "🔥";
    font-size: 13px;
}
.pricing-card .pro-savings .pro-savings-pct {
    background: rgba(255, 255, 255, 0.25);
    padding: 1px 8px;
    border-radius: 10px;
    font-size: 12px;
}
.pricing-card .pro-savings:empty {
    display: none;
}
.pricing-card ul {
    list-style: none;
    padding: 0;
    margin: 24px 0;
    text-align: left;
}
.pricing-card ul li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-gray);
    display: flex;
    align-items: center;
    gap: 8px;
}
.pricing-card ul li::before {
    content: "✓";
    color: var(--accent);
    font-weight: 700;
}
.pricing-card .btn-price {
    display: block;
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}
.pricing-card .btn-price.primary {
    background: var(--accent);
    color: #fff;
}
.pricing-card .btn-price.primary:hover {
    background: var(--accent-hover);
}
.pricing-card .btn-price.outline {
    background: #fff;
    color: var(--primary);
    border: 2px solid var(--border-color);
}
.pricing-card .btn-price.outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.pricing-card.featured .btn-price.primary {
    background: linear-gradient(135deg, var(--accent), #2563eb);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.35);
}
.pricing-card.featured .btn-price.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(59, 130, 246, 0.45);
}
.pricing-card.featured .pro-savings {
    animation: pro-savings-pulse 2.4s ease-in-out infinite;
}
@keyframes pro-savings-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35); }
    50% { transform: scale(1.04); box-shadow: 0 6px 18px rgba(16, 185, 129, 0.5); }
}

/* ========== CTA区域 ========== */
.cta {
    padding: 80px 24px;
    background: linear-gradient(
        135deg,
        var(--primary) 0%,
        var(--primary-light) 100%
    );
    text-align: center;
}
.cta h2 {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}
.cta p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}
.cta .btn-primary {
    background: #fff;
    color: var(--primary);
    font-size: 16px;
    padding: 14px 40px;
}
.cta .btn-primary:hover {
    background: #f0f7ff;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* ========== 关于 & 联系 ========== */
.contact-method,
.about-grid {
    padding: 10px 100px;
}
.contact-form {
    padding: 10px 80px;
}
.about-card {
    padding: 10px;
}

/* ========== FAQ ========== */
.faq-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 80px 0;
}
.faq-layout {
    display: flex;
    gap: 48px;
    margin-top: 50px;
    min-height: 400px;
}

/* 左侧问题列表 */
.faq-sidebar {
    flex: 0 0 320px;
    max-height: 520px;
    overflow-y: auto;
    padding-right: 8px;
    border-right: 1px solid var(--border-color);
}
.faq-sidebar::-webkit-scrollbar {
    width: 4px;
}
.faq-sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
.faq-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.faq-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-gray);
    line-height: 1.5;
    border-left: 3px solid transparent;
}
.faq-list-item:hover {
    background: var(--bg-light);
    color: var(--text-dark);
}
.faq-list-item.active {
    background: var(--bg-light);
    color: var(--accent);
    font-weight: 600;
    border-left-color: var(--accent);
}
.faq-list-item .faq-q-num {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: var(--accent);
    background: rgba(59, 130, 246, 0.10);
    transition: all 0.2s;
}
.faq-list-item.active .faq-q-num {
    background: var(--accent);
    color: #fff;
}

/* 右侧答案面板 */
.faq-main {
    flex: 1;
    min-width: 0;
    padding-top: 4px;
}
.faq-answer-panel {
    position: relative;
}
.faq-answer-card {
    display: none;
}
.faq-answer-card.active {
    display: block;
}
.faq-answer-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
    position: relative;
    padding-left: 16px;
    line-height: 1.4;
}
.faq-answer-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    border-radius: 4px;
    background: var(--accent);
}
.faq-answer-body {
    font-size: 15px;
    line-height: 1.9;
    color: #334155;
}
.faq-answer-body p {
    margin-bottom: 16px;
}
.faq-answer-body p:last-child {
    margin-bottom: 0;
}

/* 响应式：小屏切换堆叠 */
@media (max-width: 768px) {
    .faq-container {
        padding: 50px 20px;
    }
    .faq-layout {
        flex-direction: column;
        gap: 20px;
        margin-top: 30px;
    }
    .faq-sidebar {
        flex: none;
        max-height: none;
        overflow-y: visible;
        padding-right: 0;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 12px;
    }
    .docs-sidebar {
        position: static;
        align-self: auto;
        max-height: none;
    }
    .faq-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 4px;
    }
    .faq-list-item {
        flex: 1 1 auto;
        min-width: 0;
        padding: 10px 14px;
        font-size: 13px;
    }
    .faq-list-item span:last-child {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .faq-answer-title {
        font-size: 18px;
    }
}
@media (max-width: 480px) {
    .faq-list-item {
        flex: 1 1 100%;
    }
}

/* ========== DOCS（FAQ 式左右布局） ========== */
.docs-layout {
    margin-top: 40px;
}
.docs-sidebar {
    flex: 0 0 300px;
    position: sticky;
    top: 80px;
    align-self: flex-start;
    max-height: calc(100vh - 100px);
}
/* 文档正文排版 */
.docs-answer-body {
    font-size: 15px;
    color: #334155;
}
.docs-answer-body p {
    margin-bottom: 14px;
}
.docs-h4 {
    font-size: 16px;
    font-weight: 700;
    color: #1e293b;
    margin: 26px 0 12px;
    padding-left: 12px;
    position: relative;
}
.docs-h4::before {
    content: "";
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    border-radius: 4px;
    background: linear-gradient(180deg, #667eea, #764ba2);
}
/* 流程展示（01 整体流程） */
.docs-flow {
    display: flex;
    align-items: stretch;
    gap: 0;
    margin: 26px 0 30px;
    flex-wrap: wrap;
}
.docs-flow-step {
    flex: 1 1 140px;
    min-width: 130px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 16px;
    text-align: center;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
}
.docs-flow-step:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}
.docs-flow-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}
.docs-flow-step h5 {
    font-size: 15px;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 6px;
}
.docs-flow-step p {
    font-size: 12px;
    color: #64748b;
    margin: 0;
    line-height: 1.6;
}
.docs-flow-arrow {
    flex: 0 0 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 18px;
}
.docs-flow-arrow::after {
    content: "\203A";
    font-weight: 700;
}
/* 列表 */
.docs-ul,
.docs-ol {
    padding-left: 22px;
    margin: 10px 0 16px;
}
.docs-ul li,
.docs-ol li {
    margin-bottom: 8px;
    line-height: 1.8;
}
.docs-ol li {
    list-style: decimal;
}
/* 提示框 */
.docs-note {
    border-radius: 10px;
    padding: 14px 18px;
    margin: 18px 0;
    font-size: 14px;
    line-height: 1.8;
    border: 1px solid;
}
.docs-note ul {
    margin: 8px 0 0;
    padding-left: 20px;
}
.docs-note ul li {
    margin-bottom: 4px;
}
.docs-tip {
    background: #f0f9ff;
    border-color: #bae6fd;
    color: #075985;
}
.docs-warn {
    background: #fff7ed;
    border-color: #fed7aa;
    color: #9a3412;
}
/* 表格 */
.docs-table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0 20px;
    font-size: 14px;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}
.docs-table th,
.docs-table td {
    border: 1px solid #e2e8f0;
    padding: 10px 14px;
    text-align: left;
    vertical-align: top;
}
.docs-table thead th {
    background: #f1f5f9;
    color: #475569;
    font-weight: 600;
    white-space: nowrap;
}
.docs-table tbody tr:nth-child(even) {
    background: #f8fafc;
}
.docs-table code {
    background: #eef2ff;
    color: #4f46e5;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 12px;
}
.docs-req {
    color: #ef4444;
    font-weight: 700;
}
/* 代码块 */
.docs-code {
    background: #0f172a;
    color: #e2e8f0;
    border-radius: 10px;
    padding: 16px 18px;
    margin: 14px 0 20px;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.7;
}
.docs-code code {
    font-family: "JetBrains Mono", "Consolas", "Courier New", monospace;
    background: transparent;
    color: inherit;
    padding: 0;
}
/* 正文中的内联代码 */
.docs-answer-body code {
    background: #eef2ff;
    color: #4f46e5;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}
@media (max-width: 768px) {
    .docs-flow {
        gap: 10px;
    }
    .docs-flow-step {
        flex: 1 1 45%;
    }
    .docs-flow-arrow {
        display: none;
    }
}

/* ========== DOWNLOAD ========== */
.download-container{
    padding: 60px 100px;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 450px;
}
.download-table-wrap{
    margin-top: 40px;
    overflow-x: auto;
}
.download-table{
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.download-table thead{
    background: #f1f5f9;
}
.download-table th{
    padding: 16px 20px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: #475569;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid #e2e8f0;
}
.download-table td{
    padding: 18px 20px;
    font-size: 14px;
    color: #1e293b;
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
}
.download-table tbody tr:hover{
    background: #f8fafc;
}
.download-table tbody tr:last-child td{
    border-bottom: none;
}
.dl-version{
    font-weight: 700;
    color: var(--primary);
    font-family: "SF Mono", "Fira Code", monospace;
    font-size: 15px;
}
.dl-date{
    color: #64748b;
    white-space: nowrap;
}
.dl-link{
    text-align: left;
}
.dl-btn{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
    white-space: nowrap;
    border: 1px solid transparent;
}
.dl-btn svg{
    flex-shrink: 0;
}
.dl-btn.windows{
    background: #e8f4fd;
    color: #0078d4;
    border-color: #b8dff5;
}
.dl-btn.windows:hover{
    background: #0078d4;
    color: #fff;
    border-color: #0078d4;
}
.dl-btn.linux{
    background: #fff4e5;
    color: #e67e22;
    border-color: #fadcb9;
}
.dl-btn.linux:hover{
    background: #e67e22;
    color: #fff;
    border-color: #e67e22;
}
.dl-na{
    color: #cbd5e1;
    font-size: 16px;
}

.dl-notes{
    color: #64748b;
    font-size: 13px;
    line-height: 1.6;
    max-width: 280px;
}
.download-empty{
    text-align: center;
    padding: 80px 20px;
    color: #94a3b8;
}
.download-empty-icon{
    margin-bottom: 16px;
    opacity: 0.4;
}
.download-empty p{
    font-size: 15px;
}

/* ========== 更新日志 ========== */
.changelog-container{
    padding: 60px 100px;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 450px;
}
.changelog-list{
    margin-top: 40px;
    position: relative;
    padding-left: 26px;
}
.changelog-list::before{
    content: "";
    position: absolute;
    left: 8px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: #e2e8f0;
}
.changelog-item{
    position: relative;
    padding: 0 0 28px 20px;
}
.changelog-item:last-child{
    padding-bottom: 0;
}
.changelog-item::before{
    content: "";
    position: absolute;
    left: -26px;
    top: 6px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--primary);
}
.changelog-head{
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 12px;
}
.changelog-version{
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
}
.changelog-date{
    font-size: 13px;
    color: #64748b;
}
.changelog-notes{
    margin-top: 6px;
    font-size: 14px;
    color: #475569;
    line-height: 1.7;
}
.changelog-notes h3{
    margin: 10px 0 6px;
    font-size: 15px;
    color: #334155;
}
.changelog-notes h3:first-child{
    margin-top: 0;
}
.changelog-notes p{
    margin: 6px 0;
}
.changelog-notes ul,
.changelog-notes ol{
    margin: 4px 0;
    padding-left: 22px;
}
.changelog-notes li{
    margin: 3px 0;
}
.changelog-notes a{
    color: var(--primary);
}
.changelog-notes code{
    background: #f1f5f9;
    border-radius: 4px;
    padding: 1px 5px;
    font-size: 13px;
}
.changelog-notes pre{
    background: #0f172a;
    color: #e2e8f0;
    border-radius: 8px;
    padding: 12px 14px;
    overflow-x: auto;
    margin: 8px 0;
}
.changelog-notes table{
    border-collapse: collapse;
    margin: 8px 0;
    width: 100%;
}
.changelog-notes th,
.changelog-notes td{
    border: 1px solid #e2e8f0;
    padding: 6px 10px;
    text-align: left;
}
.changelog-notes blockquote{
    margin: 8px 0;
    padding: 4px 12px;
    border-left: 3px solid var(--primary);
    background: #f8fafc;
}
.changelog-empty{
    text-align: center;
    padding: 80px 20px;
    color: #94a3b8;
}
.changelog-empty-icon{
    margin-bottom: 16px;
    opacity: 0.4;
}
.changelog-empty p{
    font-size: 15px;
}
.download-more{
    margin-top: 36px;
    text-align: center;
}
.download-more a{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}
.download-more a:hover{
    color: var(--accent-hover);
}

/* ========== 博客 ========== */
.blog-container{
    padding: 60px 24px 80px;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 450px;
}
.blog-container .section-title{
    margin-bottom: 40px;
}
/* 博客列表：列表风格，单列分行展示，标题突出便于快速聚焦 */
.blog-list{
    border-top: 1px solid var(--border-color);
}
.blog-item{
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 22px 20px 24px 5px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
    text-decoration: none;
}
.blog-item:hover{
    background: rgba(15, 23, 42, 0.02);
}
.blog-item-main{
    flex: 1;
    min-width: 0;
}
.blog-item-head{
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 6px;
}
.blog-badge{
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
}
.blog-tag{
    display: inline-block;
    background: var(--bg-section);
    color: var(--primary-light);
    font-size: 12px;
    font-weight: 500;
    padding: 2px 10px;
    border-radius: 999px;
}
.blog-item-title{
    font-size: 19px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    overflow: hidden;
    transition: color 0.2s;
}
.blog-item:hover .blog-item-title{
    color: var(--accent);
}
.blog-item-summary{
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
    margin: 8px 0 0;
    max-width: 720px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    overflow: hidden;
}
.blog-item-meta{
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    font-size: 13px;
    color: #94a3b8;
    white-space: nowrap;
    padding-top: 4px;
}
.blog-date{
    color: #64748b;
}
.blog-views{
    color: #94a3b8;
}
.blog-more{
    color: var(--accent);
    font-weight: 500;
}
.blog-empty{
    text-align: center;
    padding: 80px 20px;
    color: #94a3b8;
}
.blog-empty-icon{
    margin-bottom: 16px;
    opacity: 0.4;
}
.blog-empty p{
    font-size: 15px;
}

/* 博客详情 */
.blog-detail{
    max-width: 1020px;
    margin: 0 auto;
    padding: 80px 24px 80px;
}
.blog-detail-back{
    display: inline-block;
    color: var(--accent);
    font-size: 14px;
    margin-bottom: 28px;
    transition: color 0.2s;
}
.blog-detail-back:hover{
    color: var(--accent-hover);
}
.blog-detail-cover{
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 28px;
    background: var(--bg-section);
}
.blog-detail-cover img{
    width: 100%;
    display: block;
}
.blog-detail-body{
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.blog-detail-title{
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
}
.blog-detail-meta{
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    font-size: 13px;
    color: #94a3b8;
}
.blog-detail-summary{
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.8;
    padding: 12px 16px;
    background: var(--bg-light);
    border-left: 3px solid var(--accent);
    border-radius: 0 8px 8px 0;
}
.blog-detail-content{
    margin-top: 18px;
    font-size: 15px;
    color: #334155;
    line-height: 1.8;
}
.blog-detail-content h2{
    font-size: 22px;
    color: var(--primary);
    margin: 28px 0 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}
.blog-detail-content h2:first-child{
    margin-top: 0;
}
.blog-detail-content h3{
    font-size: 18px;
    color: var(--primary);
    margin: 22px 0 10px;
}
.blog-detail-content h4{
    font-size: 16px;
    color: var(--text-dark);
    margin: 18px 0 8px;
}
.blog-detail-content p{
    margin: 10px 0;
}
.blog-detail-content ul,
.blog-detail-content ol{
    margin: 8px 0;
    padding-left: 24px;
}
.blog-detail-content li{
    margin: 4px 0;
}
.blog-detail-content a{
    color: var(--accent);
}
.blog-detail-content a:hover{
    color: var(--accent-hover);
    text-decoration: underline;
}
.blog-detail-content code{
    background: #f1f5f9;
    border-radius: 4px;
    padding: 1px 5px;
    font-size: 13px;
    color: #0f172a;
}
.blog-detail-content pre{
    background: #0f172a;
    color: #e2e8f0;
    border-radius: 8px;
    padding: 14px 16px;
    overflow-x: auto;
    margin: 12px 0;
}
.blog-detail-content pre code{
    background: transparent;
    padding: 0;
    color: inherit;
}
.blog-detail-content table{
    border-collapse: collapse;
    margin: 12px 0;
    width: 100%;
}
.blog-detail-content th,
.blog-detail-content td{
    border: 1px solid #e2e8f0;
    padding: 8px 12px;
    text-align: left;
}
.blog-detail-content th{
    background: var(--bg-section);
    font-weight: 600;
}
.blog-detail-content blockquote{
    margin: 12px 0;
    padding: 4px 14px;
    border-left: 3px solid var(--accent);
    background: var(--bg-light);
    color: var(--text-gray);
}
.blog-detail-content img{
    max-width: 100%;
    border-radius: 8px;
    margin: 12px 0;
}
.blog-detail-content hr{
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 24px 0;
}

@media (max-width: 900px){
    .blog-item-title{
        font-size: 18px;
    }
}
@media (max-width: 560px){
    .blog-item{
        flex-direction: column;
        gap: 10px;
    }
    .blog-item-meta{
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        gap: 14px;
        padding-top: 0;
    }
    .blog-item-meta .blog-more{
        margin-left: auto;
    }
    .blog-detail-title{
        font-size: 22px;
    }
}

/* ========== 页脚 ========== */
.footer {
    padding: 60px 24px 30px;
    background: #0f172a;
    color: rgba(255, 255, 255, 0.7);
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer-brand h3 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 280px;
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    padding: 4px 0;
    transition: color 0.2s;
}
.footer-col a:hover {
    color: var(--accent);
}
.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

/* ========== 响应式 ========== */
@media (max-width: 992px) {
    .hero-inner {
        flex-direction: column;
        text-align: center;
    }
    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-btns {
        justify-content: center;
    }
    .hero-visual {
        width: 100%;
    }
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .pricing-card:last-child {
        grid-column: span 2;
        max-width: 400px;
        margin: 0 auto;
    }
    .stats-inner {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 768px) {
    .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--primary);
        padding: 20px 24px;
        gap: 0;
        overflow-y: auto;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }
    .nav-wrap.active .nav-links {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .nav-links a {
        font-size: 16px;
        padding: 14px 0;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        color: rgba(255, 255, 255, 0.8);
    }
    .nav-links a:hover {
        color: #fff;
    }
    .nav-links .nav-cta {
        display: inline-block;
        text-align: center;
        margin-top: 12px;
        border-bottom: none;
    }
    /* 移动端语言切换 */
    .nav-links .lang-dropdown {
        padding: 14px 0;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .nav-links .lang-toggle {
        width: 100%;
        justify-content: space-between;
        border-color: rgba(255,255,255,0.15);
    }
    .nav-links .lang-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: transparent;
        padding: 8px 0 0 0;
        min-width: auto;
    }
    .nav-links .lang-menu a {
        color: rgba(255,255,255,0.65);
        padding: 10px 12px;
        border-bottom: none;
    }
    .nav-links .lang-menu a:hover,
    .nav-links .lang-menu a.active {
        color: #fff;
        background: rgba(255,255,255,0.08);
    }
    .nav-links .lang-menu a.active::after {
        content: "\2713";
        margin-left: auto;
        font-size: 12px;
    }
    body.menu-open {
        overflow: hidden;
    }
    .hero-text h1 {
        font-size: 32px;
    }
    .hero {
        padding: 120px 24px 60px;
    }
    .portal {
        padding: 60px 20px;
    }
    .portal-grid {
        grid-template-columns: 1fr;
    }
    .portal-card .portal-arrow {
        opacity: 1;
        transform: translateX(0);
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    .pricing-card:last-child {
        grid-column: auto;
        max-width: none;
    }
    .stats-inner {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-inner {
        grid-template-columns: 1fr;
    }
    .section-title h2 {
        font-size: 26px;
    }
}

/* ========== 中等屏及以下（≤1360px）导航改为汉堡菜单 ==========
 * 说明：导航含 8 个链接 + 语言切换 + 2 个 CTA，法/西/葡/越等长文本语言
 * 单行展示需要约 1300px 以上宽度；低于此宽度统一收纳为全屏抽屉菜单，
 * 避免链接文字被压缩换行或溢出裁切。
 */
@media (max-width: 1360px) {
    .nav-toggle {
        display: flex;
    }
    .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--primary);
        padding: 20px 24px;
        gap: 0;
        overflow-y: auto;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }
    .nav-wrap.active .nav-links {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .nav-links a {
        font-size: 16px;
        padding: 14px 0;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        color: rgba(255, 255, 255, 0.8);
    }
    .nav-links a:hover {
        color: #fff;
    }
    .nav-links .nav-cta {
        display: inline-block;
        text-align: center;
        margin-top: 12px;
        border-bottom: none;
    }
    .nav-menu,
    .nav-member {
        width: 100%;
        flex-direction: column;
        gap: 0;
        margin-left: 0;
    }
    .nav-links .lang-dropdown {
        padding: 14px 0;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .nav-links .lang-toggle {
        width: 100%;
        justify-content: space-between;
        border-color: rgba(255,255,255,0.15);
    }
    .nav-links .lang-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: transparent;
        padding: 8px 0 0 0;
        min-width: auto;
    }
    .nav-links .lang-menu a {
        color: rgba(255,255,255,0.65);
        padding: 10px 12px;
        border-bottom: none;
    }
    .nav-links .lang-menu a:hover,
    .nav-links .lang-menu a.active {
        color: #fff;
        background: rgba(255,255,255,0.08);
    }
    .nav-links .lang-menu a.active::after {
        content: "\2713";
        margin-left: auto;
        font-size: 12px;
    }
    body.menu-open {
        overflow: hidden;
    }
}

/* ========== 超宽屏（>1800px）宽松导航 ========== */
@media (min-width: 1801px) {
    .nav-inner {
        max-width: 1600px;
    }
    .nav-menu,
    .nav-member {
        gap: 20px;
    }
    .nav-menu a {
        font-size: 15px;
    }
    .nav-cta {
        padding: 8px 18px;
        font-size: 14px !important;
    }
    .nav-logo {
        font-size: 22px;
        gap: 10px;
    }
    .lang-toggle {
        padding: 6px 10px;
        font-size: 14px;
    }
}