@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== 变量 & 重置 ==================== */
:root {
    --blue-dark: #0d1b2a;
    --blue-mid:   #1a2e44;
    --blue-accent:#0066ff;
    --red-brand:  #c0272d;
    --gold:       #d4a843;
    --gray-light: #f4f6f9;
    --gray-mid:   #8a9ab0;
    --shadow-sm:  0 2px 8px rgba(13,27,42,.08);
    --shadow-md:  0 4px 20px rgba(13,27,42,.12);
    --radius:     10px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #2c3e50;
    background: var(--gray-light);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden; /* 防止横向滚动 */
}

a { color: var(--red-brand); text-decoration: none; }
a:hover { text-decoration: underline; }
img { display: block; max-width: 100%; }

/* ==================== 顶部导航栏 ==================== */
.site-header {
    background: white;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    overflow: hidden; /* 防止 logo 溢出 */
}

/* ==================== Banner ==================== */
.brand-banner {
    position: relative;
    overflow: hidden;
}

.banner-img {
    width: 100%;
    height: 520px;
}

.banner-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(13,27,42,.82) 0%,
        rgba(13,27,42,.55) 60%,
        rgba(13,27,42,.3) 100%
    );
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 60px 80px;
    color: white;
}

.banner-badge {
    display: inline-block;
    background: var(--red-brand);
    color: white;
    font-size: .8em;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 18px;
    letter-spacing: .5px;
    max-width: 100%; /* 防止 badge 溢出 */
    word-break: break-word;
    text-align: center;
}

.banner-title {
    font-size: 3em;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 10px;
    text-shadow: 0 2px 12px rgba(0,0,0,.3);
    max-width: 100%;
    word-break: break-word;
}

.banner-sub {
    font-size: 1.05em;
    opacity: .85;
    margin-bottom: 36px;
    letter-spacing: 1px;
    max-width: 100%;
    word-break: break-word;
}

.banner-stats {
    display: flex;
    align-items: center;
    gap: 0;
    background: rgba(255,255,255,.12);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,.2);
    overflow: hidden;
    max-width: 100%;
}

.stat-item {
    padding: 14px 24px;
    text-align: center;
    flex: 1;
    min-width: 0;
}

.stat-num {
    font-size: 1.3em;
    font-weight: 800;
    line-height: 1;
    color: white;
    white-space: nowrap;
}

.stat-num span {
    font-size: .45em;
    font-weight: 600;
    opacity: .8;
}

.stat-label {
    font-size: .78em;
    opacity: .75;
    margin-top: 4px;
    letter-spacing: .5px;
    white-space: nowrap; /* 标签不换行 */
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: rgba(255,255,255,.25);
    flex-shrink: 0;
}

/* ==================== 主内容 ==================== */
main {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
}

.section-card {
    background: white;
    border-radius: var(--radius);
    padding: 40px 44px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-sm);
    max-width: 100%; /* 防止超出 */
    overflow: hidden; /* 防止内容溢出 */
}

.section-title {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap; /* 标题过长时换行 */
}

.title-num {
    font-size: .75em;
    background: var(--blue-dark);
    color: white;
    padding: 3px 10px;
    border-radius: 4px;
    font-weight: 600;
}

/* ===== 公司简介 ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: center;
}

.about-text p {
    color: #4a5568;
    font-size: .97em;
    margin-bottom: 14px;
}

.about-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.tag {
    background: var(--gray-light);
    color: var(--blue-dark);
    font-size: .82em;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 20px;
    border: 1px solid #dde3ec;
}

.about-visual img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

/* ===== 核心业务 — 卡片式 ===== */
    border-radius: 6px;
    border: 1px solid #dde3ec;
}

/* ===== 成功案例 ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 4px;
}

.case-card {
    background: var(--gray-light);
    padding: 28px 20px;
    border-radius: var(--radius);
    text-align: center;
    border: 1.5px solid transparent;
    transition: border-color .2s, transform .2s;
    overflow: hidden; /* 防止数字溢出 */
}

.case-card:hover {
    border-color: var(--red-brand);
    transform: translateY(-3px);
}

.case-big-num {
    font-size: 2.6em;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 6px;
    word-break: break-all;
}

.case-big-num.red  { color: var(--red-brand); }
.case-big-num.blue { color: var(--blue-accent); }

.case-big-num span {
    font-size: .38em;
    font-weight: 600;
}

.case-label {
    font-size: .8em;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 6px;
    word-break: break-word;
}

.case-desc {
    font-size: .82em;
    color: #5a6578;
    line-height: 1.5;
}

/* ===== 服务理念 ===== */
.philosophy-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.big-quote {
    background: linear-gradient(135deg, var(--blue-dark), var(--blue-mid));
    color: white;
    padding: 36px 36px;
    border-radius: var(--radius);
    font-size: 1.2em;
    font-weight: 600;
    line-height: 1.8;
    border-left: 5px solid var(--gold);
    font-style: normal;
    overflow: hidden;
}

.philosophy-body p {
    color: #5a6578;
    font-size: .95em;
    margin-bottom: 12px;
}

.philosophy-list {
    padding-left: 18px;
    margin-top: 16px;
}

.philosophy-list li {
    color: #4a5568;
    font-size: .92em;
    margin-bottom: 8px;
}

/* ==================== 页脚 ==================== */
.site-footer {
    background: linear-gradient(180deg, #1a1a2e 0%, #0d0d1e 100%);
    color: white;
    padding-top: 64px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 60px;
    padding-bottom: 48px;
}

/* 左侧品牌区 */
.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.footer-logo {
    height: 42px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    margin-bottom: 14px;
    opacity: .85;
    filter: brightness(0) invert(1);
    transition: opacity .2s;
}
.footer-logo:hover { opacity: 1; }

.footer-slogan {
    color: rgba(255,255,255,.45);
    font-size: .85em;
    line-height: 1.6;
    margin-bottom: 18px;
}

.footer-badges {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 8px;
    padding: 6px 12px;
    font-size: .8em;
    color: rgba(255,255,255,.7);
    font-weight: 500;
    width: fit-content;
}

/* 右侧三栏 */
.footer-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col-title {
    font-weight: 700;
    font-size: .95em;
    margin-bottom: 18px;
    color: rgba(255,255,255,.9);
    border-bottom: 1px solid rgba(255,255,255,.12);
    padding-bottom: 10px;
    letter-spacing: .02em;
}

.footer-col p {
    color: rgba(255,255,255,.45);
    font-size: .85em;
    margin-bottom: 12px;
    line-height: 1.8;
    word-break: break-word;
}

.footer-col a {
    color: rgba(255,255,255,.7);
    text-decoration: none;
    transition: color .2s;
}
.footer-col a:hover { color: #fff; }

/* 社交链接 */
.footer-social-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,.65);
    font-size: .85em;
    margin-bottom: 12px;
    text-decoration: none;
    transition: color .2s, transform .2s;
}
.footer-social-link:hover { color: #fff; transform: translateX(3px); }

/* 二维码占位 */
.footer-qr-placeholder {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 10px;
    padding: 10px 14px;
    margin-top: 6px;
}

.qr-icon { font-size: 1.4em; }

/* 底部栏 */
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.07);
}

.footer-bottom-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 6px;
}

.footer-bottom p {
    color: rgba(255,255,255,.28);
    font-size: .75em;
    margin-bottom: 0;
}

.footer-beian a {
    color: rgba(255,255,255,.35);
    text-decoration: none;
    transition: color .2s;
}
.footer-beian a:hover { color: rgba(255,255,255,.6); }

/* ============================================
   联系我们 百度地图
   ============================================ */
#contact {
    margin-bottom: 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: var(--gray-light);
    border-radius: 14px;
    padding: 22px 20px;
    border: 1.5px solid transparent;
    transition: border-color .2s, box-shadow .2s, transform .2s;
}
.contact-item:hover {
    border-color: rgba(74,86,216,.2);
    box-shadow: 0 4px 18px rgba(74,86,216,.08);
    transform: translateY(-2px);
}

.contact-icon {
    font-size: 1.4em;
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-label {
    font-size: 0.8em;
    color: #888;
    margin-bottom: 4px;
}

.contact-value {
    font-size: 0.95em;
    color: #333;
    line-height: 1.6;
}

.contact-value a {
    color: var(--blue-dark);
    font-weight: 700;
    font-size: 1.05em;
    text-decoration: none;
    transition: color .2s;
}
.contact-value a:hover { color: var(--red-brand); }

.contact-qr {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    object-fit: contain;
}


.contact-sub {
    font-size: 0.78em;
    color: #999;
    margin-top: 2px;
}


/* ============================================
   05 联系方式 — 大 CTA Banner
   ============================================ */
.contact-cta-banner {
    display: flex;
    align-items: stretch;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    border-radius: 24px;
    overflow: hidden;
    margin-bottom: 40px;
    box-shadow: 0 16px 48px rgba(26, 26, 46, 0.3);
    animation: ctaBannerIn 0.6s ease-out both;
}

@keyframes ctaBannerIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 左侧：电话信息 */
.contact-cta-left {
    flex: 1;
    padding: 48px 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
}

.contact-cta-tag {
    font-size: 0.72em;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.contact-cta-phone {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.phone-label {
    font-size: 0.78em;
    color: rgba(255,255,255,0.5);
}

.phone-num {
    font-size: 2.4em;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    transition: all 0.25s;
}
.phone-num:hover { color: #4a56d8; transform: scale(1.02); }

.contact-cta-wechat {
    font-size: 0.8em;
    color: rgba(255,255,255,0.45);
}

.contact-cta-actions {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.contact-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #fff;
    color: #1a1a2e;
    font-weight: 700;
    font-size: 0.9em;
    padding: 14px 28px;
    border-radius: 100px;
    text-decoration: none;
    transition: all 0.25s;
}
.contact-btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(255,255,255,0.2); }

.contact-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.85);
    font-weight: 600;
    font-size: 0.9em;
    padding: 14px 28px;
    border-radius: 100px;
    text-decoration: none;
    border: 1.5px solid rgba(255,255,255,0.15);
    transition: all 0.25s;
}
.contact-btn-secondary:hover { background: rgba(255,255,255,0.15); transform: translateY(-3px); }

/* 中间分隔线 */
.contact-cta-divider {
    width: 1px;
    background: rgba(255,255,255,0.12);
    margin: 32px 0;
}

/* 右侧：社交关注 */
.contact-cta-right {
    flex: 1;
    padding: 48px 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-left: 1px solid rgba(255,255,255,0.08);
}

.contact-cta-social {
    width: 100%;
    text-align: center;
}

.social-title {
    font-size: 0.76em;
    color: rgba(255,255,255,0.5);
    margin-bottom: 20px;
    letter-spacing: 0.05em;
}

/* 社交链接：横排三列 */
.social-links-row {
    display: flex;
    justify-content: center;
    gap: 14px;
}

.social-links-row .social-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 20px 14px;
    text-decoration: none;
    min-width: 100px;
    flex: 1;
    max-width: 130px;
    transition: all 0.25s;
}
.social-links-row .social-item:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.25);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.social-links-row .social-icon {
    font-size: 2em;
    animation: iconFloat 3s ease-in-out infinite;
}
.social-links-row .social-item:nth-child(1) .social-icon { animation-delay: 0s; }
.social-links-row .social-item:nth-child(2) .social-icon { animation-delay: 0.4s; }
.social-links-row .social-item:nth-child(3) .social-icon { animation-delay: 0.8s; }

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.social-links-row .social-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.social-links-row .social-name {
    font-size: 0.85em;
    font-weight: 600;
    color: rgba(255,255,255,0.9);
}

.social-links-row .social-desc {
    font-size: 0.72em;
    color: rgba(255,255,255,0.55);
}

/* 信任背书 */
.contact-trust-row {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.trust-tag {
    font-size: 0.72em;
    color: rgba(255,255,255,0.6);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 100px;
    padding: 5px 14px;
}

/* 下方四列信息卡片 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 10px;
    background: var(--gray-light);
    border-radius: 16px;
    padding: 24px 16px;
    border: 1.5px solid transparent;
    transition: all 0.25s;
}
.contact-item:hover {
    border-color: rgba(74,86,216,.2);
    box-shadow: 0 6px 20px rgba(74,86,216,.08);
    transform: translateY(-3px);
}

.contact-icon {
    font-size: 2em;
}

.contact-label {
    font-size: 0.75em;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-value {
    font-size: 0.9em;
    color: #222;
    font-weight: 600;
    line-height: 1.6;
}

.contact-sub {
    font-size: 0.72em;
    color: #888;
    margin-top: 4px;
}

.contact-value a {
    color: var(--blue-dark);
    text-decoration: none;
    font-weight: 700;
}
.contact-value a:hover { color: var(--red-brand); }




@media (max-width: 1100px) {
    main { padding: 0 16px; }
}

@media (max-width: 900px) {
    .banner-overlay { padding: 40px 30px; }
    .banner-title { font-size: 2.2em; }
    .about-grid { grid-template-columns: 1fr; }
    .about-visual img { height: 200px; }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .philosophy-wrap { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .footer-inner { grid-template-columns: 1fr; gap: 30px; }
    .footer-info { grid-template-columns: 1fr 1fr; }
}

/* ==================== 响应式 — 手机（完整重写）=================== */
@media (max-width: 600px) {

    /* ---- 导航栏 ---- */
    .nav-bar { box-shadow: 0 1px 8px rgba(0,0,0,0.1); }
    .nav-inner { padding: 0 16px; height: 56px; }
    .nav-logo-link img { height: 36px; }
    .nav-mobile-toggle { font-size: 1.4em; }

    /* ---- Banner ---- */
    .brand-banner { min-height: 460px; }
    .banner-img { height: 100%; }
    .banner-overlay {
        padding: 20px 16px;
        justify-content: flex-end;
        align-items: flex-start;
    }
    .banner-badge {
        font-size: .68em;
        padding: 3px 10px;
        margin-bottom: 8px;
    }
    .banner-title { font-size: 1.6em; margin-bottom: 6px; letter-spacing: 1px; }
    .banner-sub { font-size: .8em; margin-bottom: 16px; line-height: 1.5; }
    .banner-stats {
        flex-direction: column;
        width: 100%;
        gap: 0;
        margin-bottom: 16px;
    }
    .stat-item { padding: 10px 14px; justify-content: center; }
    .stat-num { font-size: 1.4em; }
    .stat-label { font-size: .68em; }
    .stat-divider { width: 80%; height: 1px; }
    .banner-ctas { flex-direction: column; gap: 10px; width: 100%; }
    .banner-ctas a { width: 100%; text-align: center; font-size: .9em; }

    /* ---- 通用内容 ---- */
    main { margin: 24px auto; padding: 0 14px; }

    .section-card { padding: 22px 16px; margin-bottom: 16px; border-radius: 12px; }
    .section-gray { padding: 22px 16px; margin-bottom: 16px; border-radius: 12px; }
    .section-dark { padding: 22px 16px; margin-bottom: 16px; border-radius: 12px; }

    .section-title { font-size: 1.1em; margin-bottom: 18px; gap: 8px; }
    .title-num { font-size: .85em; }

    /* ---- 关于我们 ---- */
    .about-grid { grid-template-columns: 1fr; gap: 16px; }
    .about-text p { font-size: .88em; line-height: 1.7; }
    .about-visual { display: none; }
    .about-tags { gap: 6px; }
    .tag { font-size: .75em; padding: 4px 10px; }

    /* ---- 核心业务 ---- */
    .services-grid { grid-template-columns: 1fr; gap: 14px; }
    .service-card { padding: 18px 16px; }
    .service-icon { font-size: 1.6em; margin-bottom: 8px; }
    .service-card h3 { font-size: 1em; margin-bottom: 8px; }
    .service-card p { font-size: .82em; line-height: 1.65; margin-bottom: 10px; }
    .service-tags { gap: 5px; }
    .service-tags span { font-size: .73em; padding: 2px 10px; }

    /* ---- 合作案例 ---- */
    .cases-grid { grid-template-columns: 1fr; gap: 14px; }
    .case-card { padding: 18px 16px; }
    .case-header { gap: 10px; margin-bottom: 12px; }
    .case-icon { font-size: 1.8em; }
    .case-tag { font-size: .75em; padding: 5px 12px; }
    .case-body h3 { font-size: .98em; margin-bottom: 8px; }
    .case-body p { font-size: .85em; line-height: 1.65; margin-bottom: 10px; }
    .case-stats { gap: 8px; }
    .case-stats span { font-size: .75em; padding: 5px 10px; }

    /* ---- 核心理念 ---- */
    .philosophy-wrap { grid-template-columns: 1fr; gap: 14px; }
    .philosophy-item { padding: 18px 16px; }
    .philo-num { font-size: 1.6em; margin-bottom: 6px; }
    .philosophy-item h3 { font-size: 1em; margin-bottom: 6px; }
    .philosophy-item p { font-size: .82em; line-height: 1.65; }

    /* ---- 联系我们 CTA Banner ---- */
    .contact-cta-banner {
        flex-direction: column;
        border-radius: 18px;
        margin-bottom: 20px;
    }
    .contact-cta-left {
        padding: 28px 20px;
        gap: 10px;
        align-items: center;
        text-align: center;
    }
    .contact-cta-tag { font-size: .68em; }
    .phone-label { font-size: .72em; }
    .phone-num { font-size: 1.8em; }
    .contact-cta-wechat { font-size: .72em; }
    .contact-cta-actions { justify-content: center; gap: 12px; }
    .contact-btn-primary, .contact-btn-secondary { padding: 12px 22px; font-size: .82em; }
    
    .contact-cta-right {
        padding: 24px 20px;
        border-left: none;
        border-top: 1px solid rgba(255,255,255,0.08);
    }
    .social-title { font-size: .7em; margin-bottom: 16px; }
    .social-links-row { gap: 10px; }
    .social-links-row .social-item {
        min-width: 80px;
        padding: 16px 10px;
    }
    .social-links-row .social-icon { font-size: 1.6em; }
    .social-links-row .social-name { font-size: .78em; }
    .social-links-row .social-desc { font-size: .66em; }
    .contact-trust-row { justify-content: center; gap: 8px; margin-top: 16px; }
    .trust-tag { font-size: .66em; padding: 4px 10px; }

    /* ---- 联系方式网格 ---- */
    .contact-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .contact-item { padding: 16px 12px; }
    .contact-icon { font-size: 1.6em; }
    .contact-label { font-size: .7em; margin-bottom: 4px; }
    .contact-value { font-size: .8em; line-height: 1.5; }
    .contact-sub { font-size: .7em; margin-top: 6px; }

    /* ---- 页脚 ---- */
    .site-footer { padding: 36px 16px 0; }
    .footer-inner { grid-template-columns: 1fr; gap: 24px; padding-bottom: 24px; }
    .footer-brand { text-align: center; }
    .footer-logo { height: 38px; margin-bottom: 10px; }
    .footer-slogan { font-size: .8em; margin-top: 6px; }
    .footer-info { grid-template-columns: 1fr 1fr; gap: 20px; }
    .footer-col-title { font-size: .85em; margin-bottom: 10px; }
    .footer-col p { font-size: .78em; margin-bottom: 6px; }
    .footer-bottom { padding: 14px 0; }

    /* ---- 右侧悬浮 ---- */
    .sidebar-form-panel { width: calc(100vw - 24px); right: 6px; bottom: 76px; }
    .sidebar-widget { right: 10px; bottom: 14px; }
    .sidebar-btn { width: 44px; height: 44px; font-size: 1.2em; }
    .sidebar-btn.close-btn { width: 32px; height: 32px; font-size: .9em; }
}

/* ==================== 响应式 — 超小屏（iPhone SE）=================== */
@media (max-width: 380px) {
    /* ---- Banner ---- */
    .banner-img { min-height: 420px; }
    .brand-banner { min-height: 400px; }
    .banner-title { font-size: 1.4em; }
    .banner-stats { gap: 0; }

    /* ---- 联系方式 ---- */
    .contact-grid { grid-template-columns: 1fr; gap: 8px; }
    .contact-item { padding: 18px 14px; gap: 12px; flex-direction: column; }
    .contact-icon { font-size: 1.8em; }
    .contact-label { font-size: .72em; }
    .contact-value { font-size: .82em; }
    .contact-sub { font-size: .72em; margin-top: 6px; }
    
    /* CTA Banner 更紧凑 */
    .contact-cta-left { padding: 24px 16px; }
    .phone-num { font-size: 1.5em; }
    .contact-cta-actions { flex-direction: column; width: 100%; gap: 10px; }
    .contact-btn-primary, .contact-btn-secondary { width: 100%; justify-content: center; }
    
    .social-links-row .social-item { flex: 1 1 100%; padding: 14px; }
    .social-links-row .social-icon { font-size: 1.8em; }
    .contact-trust-row { flex-direction: column; align-items: center; gap: 6px; }
    .banner-title { font-size: 1.35em; }
    .banner-sub { font-size: .75em; }
    .stat-num { font-size: 1.2em; }
    .section-card { padding: 18px 14px; }
    .contact-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .footer-info { grid-template-columns: 1fr; }
}

/* ==================== 最新文章模块 ==================== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.article-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: all 0.25s ease;
    text-decoration: none;
    color: inherit;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    text-decoration: none;
}

.article-icon {
    font-size: 2.2em;
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f0f4ff, #e8edff);
    border-radius: 12px;
}

.article-content {
    flex: 1;
}

.article-content h3 {
    font-size: 1.05em;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 8px;
    line-height: 1.4;
}

.article-content p {
    font-size: 0.88em;
    color: #666;
    line-height: 1.6;
    margin-bottom: 10px;
}

.article-date {
    font-size: 0.78em;
    color: #999;
}

/* 手机端适配 */
@media (max-width: 600px) {
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 14px;
        padding: 0 16px;
    }
    .article-card {
        padding: 16px;
        gap: 12px;
    }
    .article-icon {
        font-size: 1.8em;
        width: 48px;
        height: 48px;
    }
    .article-content h3 { font-size: 0.98em; }
    .article-content p { font-size: 0.85em; }
}