/* ==========================================================================
   铭赞网络 · 响应式适配样式
   断点：1200px / 992px / 768px / 576px
   ========================================================================== */

/* 大屏 -> 1200px */
@media (max-width: 1200px) {
    .container {
        padding: 0 var(--gap-4);
    }

    .nav-wrap {
        padding: 0 var(--gap-4);
    }

    .hero-wrap {
        gap: var(--gap-7);
    }

    .nav-menu {
        gap: 0;
    }

    .nav-link {
        padding: 8px 14px;
        font-size: 13px;
    }
}

/* 平板 -> 992px */
@media (max-width: 992px) {
    .hero {
        min-height: auto;
    }

    .hero-content {
        padding: 40px 0 80px;
    }

    .hero-wrap {
        grid-template-columns: 1fr;
        gap: var(--gap-7);
    }

    .hero-visual {
        max-width: 480px;
        margin: 0 auto;
    }

    .hero-title {
        font-size: clamp(34px, 6vw, 48px);
    }

    .hero-stats {
        max-width: 100%;
    }

    /* 导航移动端 */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(11, 14, 20, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 80px 24px 24px;
        gap: 8px;
        border-radius: 0;
        border: none;
        border-left: 1px solid rgba(255, 255, 255, 0.08);
        transition: right 0.4s var(--ease);
        z-index: 9;
    }

    .nav-menu.open {
        right: 0;
    }

    .nav-link {
        padding: 14px 18px;
        font-size: 15px;
        text-align: left;
    }

    .nav-toggle {
        display: flex;
        z-index: 11;
    }

    .nav-phone {
        font-size: 13px;
        padding: 8px 14px;
    }

    .nav-cta {
        display: none;
    }

    /* 核心业务 */
    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        padding: 32px 24px;
    }

    /* 扩展业务 */
    .extras-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 优势 */
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .trust-row {
        grid-template-columns: 1fr;
        gap: var(--gap-4);
    }

    /* 流程 */
    .process-list {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--gap-5);
        row-gap: var(--gap-6);
    }

    .process-list::before {
        display: none;
    }

    .process-step {
        position: relative;
    }

    /* 案例 */
    .cases-grid {
        grid-template-columns: 1fr;
    }

    /* 联系方式 */
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .qr-card {
        grid-column: 1 / -1;
        max-width: 320px;
        margin: 0 auto;
        width: 100%;
    }

    .contact-extra {
        grid-template-columns: 1fr;
    }

    /* 底部 */
    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 手机 -> 768px */
@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .container {
        padding: 0 16px;
    }

    .nav-wrap {
        padding: 0 16px;
    }

    .logo {
        font-size: 16px;
    }

    .logo-slogan {
        font-size: 13px;
    }

    .navbar {
        padding: 16px 0;
    }

    .hero-content {
        padding: 24px 0 60px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-sub {
        font-size: 14px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
        padding: 14px 20px;
    }

    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--gap-3);
    }

    .hero-stats strong {
        font-size: 24px;
    }

    .hero-stats .label {
        font-size: 11px;
    }

    .visual-card {
        transform: none;
    }

    .visual-bars {
        height: 100px;
    }

    .section-head {
        margin-bottom: var(--gap-7);
    }

    .section-title {
        font-size: 26px;
    }

    .section-desc {
        font-size: 14px;
    }

    /* 扩展业务 */
    .extras-grid {
        grid-template-columns: 1fr;
    }

    .extra-card {
        padding: 20px;
    }

    /* 优势 */
    .expertise-grid {
        grid-template-columns: 1fr;
        gap: var(--gap-3);
    }

    .expertise-card {
        padding: 24px 20px;
    }

    .expertise-num {
        font-size: 40px;
    }

    .trust-row {
        padding: 20px;
    }

    .trust-item {
        flex-direction: column;
        text-align: center;
        gap: var(--gap-2);
    }

    /* 流程 */
    .process-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .step-num {
        width: 56px;
        height: 56px;
        font-size: 18px;
    }

    /* 案例 */
    .case-card {
        padding: 24px 20px;
    }

    .case-card h3 {
        font-size: 16px;
    }

    /* FAQ */
    .faq-item summary {
        padding: 18px 20px;
    }

    .faq-q {
        font-size: 15px;
    }

    .faq-a {
        padding: 0 20px 20px;
        font-size: 13px;
    }

    /* 联系方式 */
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-card {
        padding: 24px 20px;
    }

    .qr-card {
        flex-direction: column;
        text-align: center;
        gap: var(--gap-3);
    }

    .qr-text {
        text-align: center;
    }

    .contact-extra {
        gap: var(--gap-3);
    }

    .extra-block {
        padding: 16px 20px;
    }

    /* 底部 */
    .footer {
        padding: 40px 0 20px;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--gap-4);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    /* 回到顶部 */
    .back-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

/* 超小屏 -> 576px */
@media (max-width: 576px) {
    .hero-title {
        font-size: 28px;
        line-height: 1.2;
    }

    .hero-tag {
        font-size: 11px;
        padding: 5px 12px;
    }

    .hero-stats {
        grid-template-columns: 1fr 1fr;
        row-gap: var(--gap-4);
    }

    .hero-stats li:last-child {
        grid-column: 1 / -1;
    }

    .section-eyebrow {
        font-size: 11px;
        letter-spacing: 0.2em;
    }

    .section-title {
        font-size: 22px;
    }

    .process-list {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-col h4 {
        font-size: 13px;
    }

    .footer-col a {
        font-size: 12px;
    }
}

/* 横屏适配 */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
    }

    .hero-content {
        padding: 30px 0 60px;
    }

    .hero-scroll {
        display: none;
    }
}