/* ============================================
   响应式样式 responsive.css
   断点: 1024px 平板 / 768px 手机 / 480px 小屏手机
   ============================================ */

/* ===== 平板 (1024px 以下) ===== */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }

    .hero-text h1 {
        font-size: 38px;
    }

    .hero-inner {
        gap: 40px;
    }

    .confusion-grid,
    .services-grid,
    .feedback-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .section-title h2 {
        font-size: 30px;
    }
}

/* ===== 手机 (768px 以下) ===== */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 16px;
    }

    /* 导航折叠 */
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 12px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        border-top: 1px solid var(--border);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
        width: 100%;
    }

    .nav-logo .logo-sub {
        display: none;
    }

    /* Hero 首屏 */
    .hero {
        padding: 50px 0 40px;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .hero-text h1 {
        font-size: 30px;
        text-align: center;
    }

    .hero-text .tagline {
        font-size: 17px;
        text-align: center;
    }

    .hero-credentials {
        justify-content: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image {
        order: -1;
        max-width: 280px;
        margin: 0 auto;
    }

    /* 区块通用 */
    .section {
        padding: 50px 0;
    }

    .section-title h2 {
        font-size: 26px;
    }

    .section-title .subtitle {
        font-size: 14px;
    }

    /* 9 项困惑改为 1 列 */
    .confusion-grid,
    .services-grid,
    .feedback-grid,
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    /* 媒体区块 */
    .media-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .media-text h2 {
        font-size: 24px;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    /* 文章 */
    .article h1 {
        font-size: 26px;
    }

    .article h2 {
        font-size: 22px;
    }

    .article h3 {
        font-size: 18px;
    }

    .article p {
        font-size: 15px;
    }

    /* 按钮 */
    .btn {
        padding: 12px 24px;
        font-size: 15px;
    }
}

/* ===== 小屏手机 (480px 以下) ===== */
@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 26px;
    }

    .hero-credentials {
        gap: 8px;
    }

    .credential-tag {
        font-size: 13px;
        padding: 6px 12px;
    }

    .section-title h2 {
        font-size: 22px;
    }

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

    .service-card,
    .feedback-card,
    .case-card .case-body {
        padding: 20px;
    }

    .article-inner {
        padding: 0 16px;
    }
}

/* <!-- 响应式样式完成 --> */