/* ============================================================
   T云·重庆 品牌官网 — 统一样式表
   版本：2.0（去重优化版）
   说明：所有页面共用此样式文件
   ============================================================ */

/* ============================================================
   1. CSS Variables & Reset
   ============================================================ */
:root {
    --primary-dark: #0a2647;
    --primary-blue: #1e3a6b;
    --primary-light: #2563eb;
    --accent-orange: #ea580c;
    --accent-hover: #c2410c;
    --gray-bg: #f8fafc;
    --text-dark: #0f172a;
    --text-gray: #475569;
    --text-light: #94a3b8;
    --white: #ffffff;
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-max: 1400px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-dark);
    background: var(--white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}
.full-width { width: 100%; }

/* ============================================================
   2. Typography
   ============================================================ */
.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-dark);
    letter-spacing: -0.5px;
    line-height: 1.2;
}
.section-title .highlight { color: var(--accent-orange); }
.section-sub {
    font-size: 18px;
    color: var(--text-gray);
    max-width: 640px;
    margin: 12px auto 0;
}
.text-center { text-align: center; }
.text-center .section-sub { margin-left: auto; margin-right: auto; }

/* ============================================================
   3. Buttons
   ============================================================ */
.btn-primary {
    display: inline-block;
    background: var(--accent-orange);
    color: #fff;
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(234, 88, 12, 0.35);
}
.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(234, 88, 12, 0.4);
}
.btn-outline {
    display: inline-block;
    border: 2px solid var(--white);
    color: var(--white);
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
}
.btn-outline:hover { background: var(--white); color: var(--primary-dark); }
.btn-secondary {
    display: inline-block;
    background: var(--primary-light);
    color: #fff;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
}
.btn-secondary:hover { background: #1d4ed8; transform: translateY(-2px); }

/* ============================================================
   4. Navbar
   ============================================================ */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    z-index: 999;
    height: 72px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #f1f5f9;
}
.nav-container {
    max-width: var(--container-max);
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    display: flex;
    align-items: baseline;
    gap: 6px;
    font-size: 22px;
    font-weight: 800;
    color: var(--primary-dark);
    letter-spacing: -0.5px;
}
.logo .accent { color: var(--accent-orange); }
.logo .sub {
    font-size: 12px;
    font-weight: 400;
    color: var(--text-gray);
    margin-left: 4px;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
    transition: var(--transition);
    position: relative;
}
.nav-menu a:hover { color: var(--accent-orange); }
.nav-menu a.active {
    color: var(--accent-orange);
    font-weight: 600;
}
.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2.5px;
    background: var(--accent-orange);
    border-radius: 4px;
}
.btn-nav-consult {
    background: var(--accent-orange);
    color: #fff !important;
    padding: 8px 22px;
    border-radius: 50px;
    font-weight: 600 !important;
    transition: var(--transition);
}
.btn-nav-consult:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    color: #fff !important;
}
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}
.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--primary-dark);
    border-radius: 4px;
    transition: var(--transition);
}

/* ===== 下拉菜单 ===== */
.nav-menu .has-dropdown { position: relative; cursor: pointer; }
.nav-menu .has-dropdown .dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-menu .has-dropdown .dropdown-toggle .arrow {
    font-size: 10px;
    transition: transform 0.3s ease;
}
.nav-menu .has-dropdown:hover .dropdown-toggle .arrow {
    transform: rotate(180deg);
}
.nav-menu .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: var(--white);
    min-width: 200px;
    border-radius: var(--radius);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    border: 1px solid #f1f5f9;
    z-index: 100;
}
.nav-menu .has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.nav-menu .dropdown-menu li a {
    display: block;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    transition: all 0.2s;
}
.nav-menu .dropdown-menu li a:hover {
    background: var(--gray-bg);
    color: var(--accent-orange);
}
.nav-menu .dropdown-menu li a .desc {
    display: block;
    font-size: 11px;
    font-weight: 400;
    color: var(--text-light);
    margin-top: 1px;
}
.nav-menu .dropdown-menu .divider {
    height: 1px;
    background: #f1f5f9;
    margin: 6px 16px;
}

/* 移动端下拉菜单 */
@media (max-width: 768px) {
    .nav-menu .has-dropdown { position: static; }
    .nav-menu .dropdown-menu {
        position: static;
        transform: none;
        box-shadow: none;
        border: none;
        padding-left: 16px;
        opacity: 1;
        visibility: visible;
        background: transparent;
        display: none;
    }
    .nav-menu .has-dropdown:hover .dropdown-menu { transform: none; }
    .nav-menu .has-dropdown.active .dropdown-menu { display: block; }
}

/* ============================================================
   5. Hero 轮播
   ============================================================ */
.hero-slider .swiper-slide {
    padding: 80px 0 100px;
    background-size: cover;
    background-position: center;
    position: relative;
}
.hero-slider .swiper-slide::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(10, 38, 71, 0.75);
    z-index: 1;
}
.hero-slider .container {
    position: relative;
    z-index: 2;
    color: #fff;
}
.hero-content {
    display: flex;
    align-items: center;
    gap: 60px;
}
.hero-text { flex: 1.2; }
.hero-text h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
}
.hero-text h1 .highlight { color: var(--accent-orange); }
.hero-text .sub-text {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 520px;
}
.hero-image {
    flex: 1;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-image img {
    width: 100%;
    max-width: 560px;
    height: auto;
    border-radius: var(--radius);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25);
    object-fit: cover;
    transition: transform 0.6s ease, box-shadow 0.3s ease;
}
.hero-image img:hover {
    transform: scale(1.01);
    box-shadow: 0 12px 56px rgba(0, 0, 0, 0.35);
}
.hero-image .img-placeholder {
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 50px 30px;
    border: 2px dashed rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    width: 100%;
    max-width: 560px;
}
.hero-image .img-placeholder i {
    font-size: 56px;
    display: block;
    margin-bottom: 12px;
}
.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 40px;
}
.hero-stats .stat-item strong {
    font-size: 28px;
    font-weight: 700;
    display: block;
}
.hero-stats .stat-item span {
    font-size: 14px;
    opacity: 0.7;
}
.hero-slider .swiper-pagination-bullet {
    background: rgba(255, 255, 255, 0.5);
}
.hero-slider .swiper-pagination-bullet-active {
    background: var(--accent-orange);
}

/* ============================================================
   6. 数据统计条
   ============================================================ */
.stat-bar {
    background: var(--white);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    padding: 30px 0;
    margin-top: -30px;
    position: relative;
    z-index: 10;
    border-radius: var(--radius) var(--radius) 0 0;
}
.stat-grid {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 20px;
}
.stat-item { text-align: center; }
.stat-item .number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-dark);
}
.stat-item .number .highlight { color: var(--accent-orange); }
.stat-item .label {
    font-size: 14px;
    color: var(--text-gray);
    margin-top: 4px;
}

/* ============================================================
   7. 核心服务 (4列卡片)
   ============================================================ */
.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 24px;
}
.service-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid #f1f5f9;
    text-align: left;
    border-bottom: 4px solid transparent;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-bottom-color: var(--accent-orange);
}
.service-card .icon { font-size: 32px; display: block; margin-bottom: 8px; }
.service-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 4px;
}
.service-card .pain-point {
    font-size: 13px;
    color: var(--accent-orange);
    font-weight: 500;
    margin-bottom: 8px;
}
.service-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
}
.service-card .tags { margin-top: 12px; }
.service-card .link {
    display: inline-block;
    margin-top: 14px;
    color: var(--accent-orange);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}
.service-card .link:hover { color: var(--accent-hover); }
.service-card.featured {
    border-bottom-color: var(--accent-orange);
    background: linear-gradient(135deg, #fff8f5, #ffffff);
}

/* ============================================================
   8. 全域营销矩阵
   ============================================================ */
.matrix-section {
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}
.matrix-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 30px;
}
.matrix-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid #f1f5f9;
    position: relative;
    overflow: hidden;
    text-align: left;
}
.matrix-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-orange);
    opacity: 0;
    transition: var(--transition);
}
.matrix-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.matrix-card:hover::before { opacity: 1; }
.matrix-card .icon { font-size: 32px; display: block; margin-bottom: 10px; }
.matrix-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 6px;
}
.matrix-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 12px;
}

/* ============================================================
   9. 标签
   ============================================================ */
.tag {
    display: inline-block;
    background: var(--gray-bg);
    color: var(--text-gray);
    font-size: 12px;
    padding: 2px 12px;
    border-radius: 20px;
    margin-right: 4px;
    margin-bottom: 4px;
}
.tag.highlight {
    background: rgba(234, 88, 12, 0.10);
    color: var(--accent-orange);
}

/* ============================================================
   10. 通用卡片网格 (3列)
   ============================================================ */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 20px;
}
.card {
    background: var(--white);
    padding: 36px 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid #f1f5f9;
    text-align: center;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.card .icon {
    font-size: 40px;
    color: var(--primary-light);
    margin-bottom: 16px;
    display: block;
}
.card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 8px;
}
.card p {
    color: var(--text-gray);
    font-size: 15px;
}

/* ============================================================
   11. AI生态伙伴
   ============================================================ */
.eco-item:nth-child(6n+1) i { color: #4F46E5; }
.eco-item:nth-child(6n+2) i { color: #0EA5E9; }
.eco-item:nth-child(6n+3) i { color: #10B981; }
.eco-item:nth-child(6n+4) i { color: #F59E0B; }
.eco-item:nth-child(6n+5) i { color: #EF4444; }
.eco-item:nth-child(6n+6) i { color: #8B5CF6; }

.eco-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    align-items: center;
    justify-items: center;
    margin-top: 24px;
}
.eco-item {
    background: var(--white);
    border-radius: var(--radius);
    padding: 18px 10px;
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    border: 1px solid #f1f5f9;
    min-height: 85px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.eco-item i { font-size: 28px; display: block; margin-bottom: 6px; color: var(--primary-light); }
.eco-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-orange);
}

/* ============================================================
   12. About Summary
   ============================================================ */
.about-wrap {
    display: flex;
    align-items: center;
    gap: 60px;
}
.about-wrap .text { flex: 1.2; }
.about-wrap .text h2 {
    font-size: 34px;
    color: var(--primary-dark);
    margin-bottom: 16px;
}
.about-wrap .text p {
    color: var(--text-gray);
    margin-bottom: 16px;
}
.about-wrap .image {
    flex: 1;
    background: #e2e8f0;
    min-height: 260px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    font-weight: 500;
    background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNjAiIGhlaWdodD0iNjAiIHZpZXdCb3g9IjAgMCA2MCA2MCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cmVjdCB3aWR0aD0iNjAiIGhlaWdodD0iNjAiIGZpbGw9IiNlMmU4ZjAiLz48dGV4dCB4PSI1MCUiIHk9IjUwJSIgZm9udC1mYW1pbHk9IkFyaWFsIiBmb250LXNpemU9IjE0IiBmaWxsPSIjOTQhM2I5NCIgdGV4dC1hbmNob3I9Im1pZGRsZSIgZHk9Ii4zZW0iPua3seW3tOS6uuW3tOS7o+WAvO+8gTwvdGV4dD48L3N2Zz4=');
    background-size: 40px;
    background-repeat: no-repeat;
    background-position: center;
}

/* ============================================================
   13. CTA 横幅 (多种变体)
   ============================================================ */
.cta-banner {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-blue));
    color: #fff;
    padding: 50px 30px;
    border-radius: var(--radius);
    text-align: center;
}
.cta-banner h2 { font-size: 32px; margin-bottom: 12px; }
.cta-banner p { opacity: 0.85; margin-bottom: 24px; }
.cta-banner .form-inline {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}
.cta-banner .form-inline input {
    padding: 14px 20px;
    border-radius: 50px;
    border: none;
    min-width: 260px;
    font-size: 16px;
}
.cta-banner .form-inline button {
    background: var(--accent-orange);
    border: none;
    color: #fff;
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.cta-banner .form-inline button:hover { background: var(--accent-hover); }

/* CTA 左右双栏 */
.cta-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #0a2647 0%, #1a3a6b 100%);
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: 50%;
    pointer-events: none;
}
.cta-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: rgba(234, 88, 12, 0.05);
    border-radius: 50%;
    pointer-events: none;
}
.cta-wrapper {
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 2;
}
.cta-text { flex: 1.2; color: #fff; }
.cta-text .tag {
    display: inline-block;
    background: rgba(234, 88, 12, 0.2);
    color: var(--accent-orange);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 16px;
    border-radius: 50px;
    margin-bottom: 16px;
    border: 1px solid rgba(234, 88, 12, 0.3);
}
.cta-text h2 {
    font-size: 38px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 12px;
}
.cta-text h2 .highlight { color: var(--accent-orange); }
.cta-text .desc {
    font-size: 17px;
    opacity: 0.85;
    max-width: 480px;
    margin-bottom: 20px;
    line-height: 1.7;
}
.cta-text .trust-badges {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}
.cta-text .trust-badges span {
    font-size: 14px;
    opacity: 0.7;
    display: flex;
    align-items: center;
    gap: 6px;
}
.cta-text .trust-badges i {
    color: var(--accent-orange);
    font-size: 16px;
}
.cta-form {
    flex: 1;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    border-radius: var(--radius);
    padding: 36px 32px;
    border: 1px solid rgba(255, 255, 255, 0.10);
}
.cta-form .form-title {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}
.cta-form .form-sub {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-bottom: 20px;
}
.cta-form .form-group { margin-bottom: 14px; }
.cta-form .form-group input {
    width: 100%;
    padding: 14px 18px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 15px;
    transition: var(--transition);
    outline: none;
}
.cta-form .form-group input::placeholder { color: rgba(255, 255, 255, 0.4); }
.cta-form .form-group input:focus {
    border-color: var(--accent-orange);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.15);
}
.cta-form .form-row { display: flex; gap: 12px; }
.cta-form .form-row .form-group { flex: 1; }
.cta-form .btn-submit {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: var(--radius);
    background: var(--accent-orange);
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.cta-form .btn-submit:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(234, 88, 12, 0.35);
}
.cta-form .form-guarantee {
    text-align: center;
    margin-top: 14px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}
.cta-form .form-guarantee i { color: #22c55e; }

/* CTA 全屏通栏 */
.cta-fullwidth-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1a3a6b 100%);
    padding: 70px 0;
    position: relative;
    overflow: hidden;
    border-top: 4px solid var(--accent-orange);
    border-bottom: 4px solid var(--accent-orange);
}
.cta-fullwidth-section::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: 50%;
    pointer-events: none;
}
.cta-fullwidth-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: rgba(234, 88, 12, 0.04);
    border-radius: 50%;
    pointer-events: none;
}
.cta-fullwidth-wrapper {
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 2;
}
.cta-fullwidth-left { flex: 1.2; color: #fff; }
.cta-badge {
    display: inline-block;
    background: rgba(234, 88, 12, 0.2);
    color: var(--accent-orange);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 20px;
    border-radius: 50px;
    border: 1px solid rgba(234, 88, 12, 0.3);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.cta-fullwidth-left h2 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 8px;
}
.cta-fullwidth-left h2 .highlight { color: var(--accent-orange); }
.cta-fullwidth-left .cta-desc {
    font-size: 17px;
    opacity: 0.75;
    margin-bottom: 20px;
}
.cta-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}
.cta-feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    opacity: 0.85;
}
.cta-feature-item i {
    color: #22c55e;
    font-size: 16px;
    flex-shrink: 0;
}
.cta-trust {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.cta-trust span {
    font-size: 14px;
    opacity: 0.55;
    display: flex;
    align-items: center;
    gap: 6px;
}
.cta-trust i { color: var(--accent-orange); }
.cta-fullwidth-right { flex: 1; }
.cta-form-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    border-radius: var(--radius);
    padding: 36px 32px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}
.cta-form-title {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}
.cta-form-hint {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    margin-bottom: 20px;
}
.cta-form-group { margin-bottom: 14px; }
.cta-form-group input {
    width: 100%;
    padding: 14px 18px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 15px;
    outline: none;
    transition: var(--transition);
}
.cta-form-group input::placeholder { color: rgba(255, 255, 255, 0.35); }
.cta-form-group input:focus {
    border-color: var(--accent-orange);
    background: rgba(255, 255, 255, 0.14);
    box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.15);
}
.cta-full-submit {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: var(--radius);
    background: var(--accent-orange);
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.cta-full-submit:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(234, 88, 12, 0.35);
}
.cta-form-guarantee {
    text-align: center;
    margin-top: 14px;
    color: rgba(255, 255, 255, 0.3);
    font-size: 13px;
}
.cta-form-guarantee i { color: #22c55e; }

/* ============================================================
   14. 解决方案页
   ============================================================ */
.solution-item {
    display: flex;
    gap: 40px;
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-md);
    border-left: 6px solid var(--accent-orange);
    transition: var(--transition);
}
.solution-item:hover { box-shadow: var(--shadow-lg); }
.solution-item .content { flex: 2; }
.solution-item .content h3 {
    font-size: 24px;
    color: var(--primary-dark);
    margin-bottom: 10px;
}
.solution-item .content ul {
    padding-left: 20px;
    list-style: disc;
    color: var(--text-gray);
}
.solution-item .content ul li { margin-bottom: 6px; }

/* ============================================================
   15. 联系我们页
   ============================================================ */
.contact-wrap {
    display: flex;
    gap: 50px;
}
.contact-form { flex: 1.5; }
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid #e2e8f0;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 16px;
    transition: var(--transition);
    background: var(--white);
}
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary-light);
    outline: none;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}
.contact-form textarea { height: 140px; resize: vertical; }
.contact-info {
    flex: 1;
    background: var(--primary-dark);
    color: #fff;
    padding: 40px 36px;
    border-radius: var(--radius);
}
.contact-info h4 { font-size: 22px; margin-bottom: 20px; }
.contact-info p {
    margin-bottom: 14px;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 12px;
}
.contact-info .icon-circle {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ============================================================
   16. Footer
   ============================================================ */
.footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 50px 0 20px;
    border-top: 4px solid var(--accent-orange);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer h4 { color: #fff; font-size: 18px; margin-bottom: 16px; }
.footer p { font-size: 14px; line-height: 1.8; }
.footer a {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    transition: var(--transition);
}
.footer a:hover { color: var(--accent-orange); }
.footer .copyright {
    text-align: center;
    padding-top: 24px;
    font-size: 14px;
    opacity: 0.6;
}

/* ============================================================
   17. 通用工具类
   ============================================================ */
.section-padding { padding: 80px 0; }
.bg-gray { background: var(--gray-bg); }
.bg-dark {
    background: var(--primary-dark);
    color: var(--white);
}
.bg-dark .section-title { color: var(--white); }
.bg-dark .section-sub { color: rgba(255, 255, 255, 0.7); }

/* ============================================================
   18. Back to Top
   ============================================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--accent-orange);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(234, 88, 12, 0.35);
    transition: all 0.3s ease;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.8);
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}
.back-to-top:hover {
    background: var(--accent-hover);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 30px rgba(234, 88, 12, 0.45);
}
.back-to-top:active { transform: scale(0.95); }
.back-to-top .icon { line-height: 1; }

/* ============================================================
   19. 子页面通用 Hero
   ============================================================ */
.sub-hero {
    background: linear-gradient(135deg, #0a2647 0%, #1a3a6b 60%, #2563eb 100%);
    padding: 45px 0 50px;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.sub-hero .hero-badge {
    display: inline-block;
    background: rgba(234, 88, 12, 0.2);
    color: #ea580c;
    font-size: 13px;
    font-weight: 600;
    padding: 4px 20px;
    border-radius: 50px;
    border: 1px solid rgba(234, 88, 12, 0.25);
    margin-bottom: 14px;
    letter-spacing: 1px;
}
.sub-hero h1 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 8px;
}
.sub-hero h1 .highlight { color: #ea580c; }
.sub-hero p {
    font-size: 16px;
    opacity: 0.8;
    max-width: 620px;
    margin: 0 auto;
}
.sub-hero .hero-tags {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.sub-hero .hero-tags span { font-size: 14px; opacity: 0.6; }
.sub-hero .hero-tags i { color: #22c55e; }

/* ============================================================
   20. 痛点网格 (子页面)
   ============================================================ */
.pain-grid-sub {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 1920px;
    margin: 0 auto;
}
.pain-card-sub {
    background: var(--white);
    border-radius: var(--radius);
    padding: 22px 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid #f1f5f9;
    transition: all 0.3s;
    display: flex;
    gap: 14px;
    align-items: flex-start;
}
.pain-card-sub:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}
.pain-card-sub .icon { font-size: 26px; flex-shrink: 0; margin-top: 2px; }
.pain-card-sub .info h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 2px;
}
.pain-card-sub .info p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* ============================================================
   21. 功能网格 (子页面 3列)
   ============================================================ */
.func-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1920px;
    margin: 0 auto;
}
.func-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid #f1f5f9;
    transition: all 0.3s;
    text-align: center;
}
.func-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}
.func-card .icon { font-size: 36px; display: block; margin-bottom: 10px; }
.func-card h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 4px;
}
.func-card .sub {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 8px;
}
.func-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* ============================================================
   22. 效果数据条
   ============================================================ */
.effect-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1920px;
    margin: 0 auto;
}
.effect-bar .item {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid #f1f5f9;
}
.effect-bar .item .num {
    font-size: 30px;
    font-weight: 800;
    color: var(--accent-orange);
}
.effect-bar .item .label {
    font-size: 14px;
    color: var(--text-gray);
    margin-top: 4px;
}

/* ============================================================
   23. 全渠道卡片 (ai-service)
   ============================================================ */
.channel-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.channel-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: transparent;
}

/* ============================================================
   24. 文章详情页
   ============================================================ */
.article-cover {
    height: 320px;
    border-radius: var(--radius) var(--radius) 0 0;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    padding: 0 48px;
}
.article-cover .cover-badge {
    position: absolute;
    top: 24px;
    left: 48px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 2;
    flex-wrap: wrap;
}
.article-cover .cover-badge .tag {
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 5px 18px;
    border-radius: 50px;
    letter-spacing: 0.5px;
    backdrop-filter: blur(4px);
}
.article-cover .cover-badge .date {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    padding: 5px 16px;
    border-radius: 50px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.04);
}
.article-cover .cover-title {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 700px;
}
.article-cover .cover-title h1 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 10px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
}
.article-cover .cover-title p {
    font-size: 15px;
    opacity: 0.7;
    line-height: 1.6;
    max-width: 500px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}
.article-cover .cover-meta {
    position: absolute;
    bottom: 24px;
    right: 48px;
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 2;
    color: rgba(255, 255, 255, 0.35);
    font-size: 13px;
}
.article-cover .cover-meta .divider {
    width: 1px;
    height: 14px;
    background: rgba(255, 255, 255, 0.08);
}
.article-cover .cover-line {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-orange) 0%, var(--primary-light) 50%, transparent 100%);
    z-index: 2;
}

.article-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    margin-top: 0;
    align-items: flex-start;
}
.article-main {
    background: var(--white);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
    padding: 30px 36px 36px;
}
.article-main .breadcrumb {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 12px;
}
.article-main .breadcrumb a {
    color: var(--accent-orange);
    transition: color 0.3s;
}
.article-main .breadcrumb a:hover { color: var(--accent-hover); }
.article-main h1 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary-dark);
    line-height: 1.3;
    margin-bottom: 12px;
}
.article-main .meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f1f5f9;
}
.article-main .meta-row .meta-left {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 14px;
    color: var(--text-gray);
    flex-wrap: wrap;
}
.article-main .meta-row .meta-left .divider { color: #e2e8f0; }
.article-main .meta-row .meta-right { display: flex; gap: 8px; }
.article-main .meta-row .meta-right .share-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid #e2e8f0;
    background: transparent;
    color: var(--text-gray);
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
}
.article-main .meta-row .meta-right .share-btn:hover {
    background: var(--accent-orange);
    color: #fff;
    border-color: var(--accent-orange);
}
.article-body .content {
    font-size: 16px;
    color: var(--text-dark);
    line-height: 1.9;
}
.article-body .content .dropcap::first-letter {
    font-size: 52px;
    font-weight: 800;
    color: var(--accent-orange);
    float: left;
    line-height: 1;
    margin-right: 10px;
    margin-top: 4px;
    font-family: Georgia, serif;
}
.article-body .content p { margin-bottom: 18px; }
.article-body .content h2 {
    font-size: 21px;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 34px 0 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid #f1f5f9;
    display: flex;
    align-items: center;
    gap: 10px;
    scroll-margin-top: 80px;
}
.article-body .content h2 .h2-icon {
    color: var(--accent-orange);
    font-size: 18px;
}
.article-body .content ul {
    padding-left: 24px;
    margin-bottom: 18px;
}
.article-body .content ul li {
    list-style: none;
    position: relative;
    padding-left: 20px;
    margin-bottom: 6px;
}
.article-body .content ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-orange);
    font-weight: 700;
}
.article-body .content ul li strong { color: var(--primary-dark); }

/* 信息提示框 (文章) */
.info-box {
    border-radius: var(--radius);
    padding: 16px 20px;
    margin: 22px 0;
    display: flex;
    gap: 14px;
    align-items: flex-start;
}
.info-box.orange {
    background: rgba(234, 88, 12, 0.06);
    border: 1px solid rgba(234, 88, 12, 0.15);
}
.info-box.blue {
    background: rgba(37, 99, 235, 0.06);
    border: 1px solid rgba(37, 99, 235, 0.15);
}
.info-box.green {
    background: rgba(16, 185, 129, 0.06);
    border: 1px solid rgba(16, 185, 129, 0.15);
}
.info-box i { font-size: 18px; margin-top: 2px; flex-shrink: 0; }
.info-box.orange i { color: var(--accent-orange); }
.info-box.blue i { color: var(--primary-light); }
.info-box.green i { color: #10b981; }
.info-box .box-title {
    font-weight: 700;
    font-size: 13px;
    display: block;
    margin-bottom: 2px;
}
.info-box p { font-size: 14px; color: var(--text-gray); margin-bottom: 0; }
.info-box p strong { color: var(--text-dark); }

/* 步骤流程 */
.step-flow {
    background: var(--gray-bg);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin: 18px 0;
}
.step-flow .step {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}
.step-flow .step:last-child { border-bottom: none; }
.step-flow .step .num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    color: #fff;
    flex-shrink: 0;
}
.step-flow .step .num.orange { background: var(--accent-orange); }
.step-flow .step .num.blue { background: var(--primary-light); }
.step-flow .step .num.green { background: #10b981; }
.step-flow .step .num.purple { background: #8b5cf6; }
.step-flow .step .step-content {
    font-size: 14px;
    color: var(--text-gray);
    padding-top: 2px;
}
.step-flow .step .step-content strong { color: var(--text-dark); }

/* 价值网格 */
.value-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin: 18px 0;
}
.value-grid .value-item {
    background: var(--gray-bg);
    border-radius: var(--radius);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-dark);
    font-weight: 500;
}
.value-grid .value-item i { color: #10b981; font-size: 16px; }

/* 文中CTA */
.inline-cta {
    background: linear-gradient(135deg, #0a2647, #1a3a6b);
    border-radius: var(--radius);
    padding: 24px 28px;
    color: #fff;
    text-align: center;
    margin: 26px 0;
}
.inline-cta p { font-size: 14px; opacity: 0.8; margin-bottom: 10px; }
.inline-cta h4 {
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}
.inline-cta .btn-cta {
    display: inline-block;
    background: var(--accent-orange);
    color: #fff;
    padding: 8px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    text-decoration: none;
}
.inline-cta .btn-cta:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(234, 88, 12, 0.35);
}

/* 文章底部 */
.article-footer {
    border-top: 1px solid #f1f5f9;
    padding-top: 20px;
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.article-footer .tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.article-footer .tags span {
    background: var(--gray-bg);
    color: var(--text-gray);
    font-size: 11px;
    padding: 3px 12px;
    border-radius: 20px;
    transition: all 0.3s;
    cursor: default;
}
.article-footer .tags span:hover {
    background: rgba(234, 88, 12, 0.08);
    color: var(--accent-orange);
}
.article-footer .actions {
    display: flex;
    gap: 10px;
}
.article-footer .actions button {
    padding: 5px 16px;
    border-radius: 50px;
    border: 1px solid #e2e8f0;
    background: transparent;
    color: var(--text-gray);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}
.article-footer .actions button:hover {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}
.article-footer .actions button.liked {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
    background: rgba(234, 88, 12, 0.06);
}

/* 作者信息 */
.article-author {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--gray-bg);
    border-radius: var(--radius);
    margin: 22px 0 6px;
}
.article-author .avatar {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    flex-shrink: 0;
}
.article-author .info .name {
    font-weight: 700;
    color: var(--primary-dark);
    font-size: 14px;
}
.article-author .info .desc {
    font-size: 13px;
    color: var(--text-gray);
}

/* 侧边栏 (文章详情) */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: 100px;
    align-self: flex-start;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
}
.article-sidebar::-webkit-scrollbar { width: 3px; }
.article-sidebar::-webkit-scrollbar-track { background: transparent; }
.article-sidebar::-webkit-scrollbar-thumb {
    background: #e2e8f0;
    border-radius: 10px;
}
.article-sidebar::-webkit-scrollbar-thumb:hover { background: var(--accent-orange); }

.sidebar-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px 22px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid #f1f5f9;
    flex-shrink: 0;
}
.sidebar-card h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}
.sidebar-card h4 i { color: var(--accent-orange); margin-right: 6px; }
.sidebar-toc {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.sidebar-toc a {
    font-size: 14px;
    color: var(--text-gray);
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.3s;
    border-left: 3px solid transparent;
    text-decoration: none;
}
.sidebar-toc a:hover {
    color: var(--accent-orange);
    background: rgba(234, 88, 12, 0.04);
    border-left-color: var(--accent-orange);
}
.sidebar-toc a.active {
    color: var(--accent-orange);
    background: rgba(234, 88, 12, 0.06);
    border-left-color: var(--accent-orange);
    font-weight: 600;
}
.sidebar-related {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.sidebar-related .rel-item {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 8px 10px;
    border-radius: 8px;
    transition: all 0.3s;
    text-decoration: none;
}
.sidebar-related .rel-item:hover { background: var(--gray-bg); }
.sidebar-related .rel-item .icon { font-size: 18px; flex-shrink: 0; }
.sidebar-related .rel-item .info .title {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-dark);
    line-height: 1.3;
}
.sidebar-related .rel-item .info .date {
    font-size: 11px;
    color: var(--text-light);
}
.sidebar-cta {
    background: linear-gradient(135deg, #0a2647, #1a3a6b);
    border-radius: var(--radius);
    padding: 22px 20px;
    color: #fff;
    text-align: center;
    flex-shrink: 0;
}
.sidebar-cta .icon { font-size: 32px; margin-bottom: 6px; }
.sidebar-cta h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}
.sidebar-cta p {
    font-size: 13px;
    opacity: 0.7;
    margin-bottom: 14px;
}
.sidebar-cta .btn-cta-sm {
    display: inline-block;
    background: var(--accent-orange);
    color: #fff;
    padding: 8px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 13px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    text-decoration: none;
}
.sidebar-cta .btn-cta-sm:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(234, 88, 12, 0.3);
}

/* 相关文章 */
.related-articles {
    padding: 40px 0 10px;
    margin-top: 10px;
    border-top: 1px solid #f1f5f9;
}
.related-articles .related-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}
.related-articles .related-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
}
.related-articles .related-header h3 i {
    color: var(--accent-orange);
    margin-right: 8px;
}
.related-articles .related-header a {
    color: var(--accent-orange);
    font-weight: 600;
    font-size: 13px;
    text-decoration: none;
}
.related-articles .related-header a:hover { color: var(--accent-hover); }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.related-grid .rel-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 16px 18px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid #f1f5f9;
    transition: all 0.3s;
}
.related-grid .rel-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}
.related-grid .rel-card .cat {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent-orange);
}
.related-grid .rel-card h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 6px 0 8px;
    line-height: 1.4;
}
.related-grid .rel-card h4 a {
    transition: color 0.3s;
    text-decoration: none;
    color: var(--primary-dark);
}
.related-grid .rel-card h4 a:hover { color: var(--accent-orange); }
.related-grid .rel-card .date {
    font-size: 12px;
    color: var(--text-light);
}

/* ============================================================
   25. 案例详情页
   ============================================================ */
.case-cover {
    height: 320px;
    border-radius: var(--radius) var(--radius) 0 0;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    padding: 0 48px;
}
.case-cover .cover-badge {
    position: absolute;
    top: 24px;
    left: 48px;
    background: rgba(234, 88, 12, 0.88);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 5px 18px;
    border-radius: 50px;
    letter-spacing: 0.5px;
    z-index: 2;
}
.case-cover .cover-result {
    position: absolute;
    top: 24px;
    right: 48px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 10px 20px;
    text-align: center;
    color: #fff;
    z-index: 2;
    min-width: 100px;
}
.case-cover .cover-result .big {
    font-size: 28px;
    font-weight: 800;
    color: var(--accent-orange);
    display: block;
    line-height: 1.2;
}
.case-cover .cover-result .label { font-size: 12px; opacity: 0.6; }

.case-detail-card {
    background: var(--white);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
    padding: 0 48px 40px;
}
.case-header {
    padding: 24px 0 16px;
    border-bottom: 1px solid #f1f5f9;
}
.case-header .breadcrumb {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 10px;
}
.case-header .breadcrumb a {
    color: var(--accent-orange);
    transition: color 0.3s;
}
.case-header .breadcrumb a:hover { color: var(--accent-hover); }
.case-header h1 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary-dark);
    line-height: 1.3;
    margin-bottom: 8px;
}
.case-header .sub-info {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--text-gray);
}
.case-header .sub-info .industry-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 16px;
    border-radius: 20px;
    background: rgba(234, 88, 12, 0.12);
    color: #ea580c;
}
.case-header .sub-info .divider { color: #e2e8f0; }

.case-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 40px;
    padding: 28px 0 10px;
}
.case-main .content {
    font-size: 16.5px;
    color: var(--text-dark);
    line-height: 1.9;
}
.case-main .content .dropcap::first-letter {
    font-size: 56px;
    font-weight: 800;
    color: var(--accent-orange);
    float: left;
    line-height: 1;
    margin-right: 10px;
    margin-top: 4px;
    font-family: Georgia, serif;
}
.case-main .content p { margin-bottom: 20px; }
.case-main .content h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 38px 0 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f1f5f9;
    display: flex;
    align-items: center;
    gap: 10px;
}
.case-main .content h2 .h2-icon {
    color: var(--accent-orange);
    font-size: 20px;
}
.case-main .content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 24px 0 10px;
}

.data-highlight {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 24px 0;
}
.data-highlight .item {
    background: var(--gray-bg);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    border: 1px solid #f1f5f9;
}
.data-highlight .item .num {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent-orange);
    display: block;
}
.data-highlight .item .num.green { color: #10b981; }
.data-highlight .item .num.blue { color: var(--primary-light); }
.data-highlight .item .label {
    font-size: 14px;
    color: var(--text-gray);
    margin-top: 4px;
}

.path-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 20px 0;
    position: relative;
    padding-left: 30px;
}
.path-steps::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 10px;
    bottom: 10px;
    width: 2px;
    background: #e2e8f0;
}
.path-steps .step {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 12px 0;
    position: relative;
}
.path-steps .step::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 18px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-orange);
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px var(--accent-orange);
    z-index: 2;
}
.path-steps .step:nth-child(2)::before {
    background: var(--primary-light);
    box-shadow: 0 0 0 3px var(--primary-light);
}
.path-steps .step:nth-child(3)::before {
    background: #10b981;
    box-shadow: 0 0 0 3px #10b981;
}
.path-steps .step:nth-child(4)::before {
    background: #8b5cf6;
    box-shadow: 0 0 0 3px #8b5cf6;
}
.path-steps .step .step-content {
    font-size: 15px;
    color: var(--text-gray);
}
.path-steps .step .step-content strong { color: var(--text-dark); }

.data-table-wrap {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid #f1f5f9;
    overflow: hidden;
    margin: 16px 0 24px;
}
.data-table-wrap table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.data-table-wrap thead {
    background: var(--primary-dark);
    color: #fff;
}
.data-table-wrap thead th {
    padding: 12px 16px;
    text-align: left;
}
.data-table-wrap thead th.center { text-align: center; }
.data-table-wrap tbody tr { border-bottom: 1px solid #f1f5f9; }
.data-table-wrap tbody tr:last-child { border-bottom: none; }
.data-table-wrap tbody td { padding: 12px 16px; }
.data-table-wrap tbody td.center { text-align: center; }
.data-table-wrap tbody td .up { color: #10b981; font-weight: 700; }
.data-table-wrap tbody td .down { color: var(--accent-orange); font-weight: 700; }

.testimonial-large {
    background: linear-gradient(135deg, var(--gray-bg), #f1f5f9);
    border-radius: var(--radius);
    padding: 28px 32px;
    margin: 28px 0;
    position: relative;
    border-left: 4px solid var(--accent-orange);
}
.testimonial-large .quote-icon {
    font-size: 40px;
    color: var(--accent-orange);
    opacity: 0.15;
    position: absolute;
    top: 12px;
    right: 20px;
    font-family: Georgia, serif;
}
.testimonial-large .text {
    font-size: 17px;
    font-style: italic;
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: 10px;
}
.testimonial-large .source {
    font-style: normal;
    font-weight: 700;
    color: var(--primary-dark);
}
.testimonial-large .source .position {
    font-weight: 400;
    color: var(--text-gray);
}
.tech-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin: 16px 0 20px;
}
.tech-tags span {
    background: var(--gray-bg);
    color: var(--text-gray);
    font-size: 13px;
    padding: 6px 18px;
    border-radius: 50px;
    border: 1px solid #e2e8f0;
}
.tech-tags span.highlight {
    background: rgba(234, 88, 12, 0.08);
    color: var(--accent-orange);
    border-color: rgba(234, 88, 12, 0.15);
}

.case-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.case-sidebar .sidebar-card {
    background: var(--gray-bg);
    border-radius: var(--radius);
    padding: 20px 22px;
    border: 1px solid #f1f5f9;
}
.profile-item {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 14px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}
.profile-item:last-child { border-bottom: none; }
.profile-item .label { color: var(--text-gray); }
.profile-item .value { font-weight: 600; color: var(--text-dark); }

.module-tag {
    display: inline-block;
    font-size: 12px;
    padding: 4px 14px;
    border-radius: 20px;
    margin: 3px 4px 3px 0;
    background: var(--white);
    border: 1px solid #e2e8f0;
    color: var(--text-gray);
}
.module-tag.active {
    background: rgba(234, 88, 12, 0.08);
    border-color: rgba(234, 88, 12, 0.2);
    color: var(--accent-orange);
}
.progress-item { margin-bottom: 12px; }
.progress-item .progress-label {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 4px;
}
.progress-item .progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 10px;
    overflow: hidden;
}
.progress-item .progress-bar .fill {
    height: 100%;
    border-radius: 10px;
    background: linear-gradient(90deg, var(--accent-orange), var(--primary-light));
    transition: width 0.6s ease;
}

.case-footer {
    border-top: 1px solid #f1f5f9;
    padding-top: 24px;
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}
.case-footer .tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.case-footer .tags span {
    background: var(--gray-bg);
    color: var(--text-gray);
    font-size: 12px;
    padding: 4px 14px;
    border-radius: 20px;
}
.case-footer .actions {
    display: flex;
    gap: 12px;
}
.case-footer .actions a {
    padding: 6px 18px;
    border-radius: 50px;
    border: 1px solid #e2e8f0;
    color: var(--text-gray);
    font-size: 13px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}
.case-footer .actions a:hover {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

.related-cases {
    padding: 40px 0 10px;
}
.related-cases .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 18px;
}
.related-cases .section-header h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-dark);
}
.related-cases .section-header h3 i {
    color: var(--accent-orange);
    margin-right: 8px;
}
.related-cases .section-header a {
    color: var(--accent-orange);
    font-weight: 600;
    font-size: 14px;
}
.related-cases .related-grid .related-card .industry {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-orange);
}
.related-cases .related-grid .related-card .industry.blue { color: var(--primary-light); }
.related-cases .related-grid .related-card .industry.green { color: #10b981; }
.related-cases .related-grid .related-card .industry.pink { color: #ec4899; }

/* ============================================================
   26. 行业洞察 (双栏)
   ============================================================ */
.insight-article-card {
    transition: all 0.3s ease;
    cursor: default;
}
.insight-article-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}
.insight-article-card .read-more { transition: all 0.3s ease; }
.insight-article-card:hover .read-more { color: var(--accent-orange); }
.insight-article-card:hover .read-more i { transform: translateX(4px); }

.insight-tab-btn { transition: all 0.3s ease; }
.insight-tab-btn:hover {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}
.insight-tab-btn.active {
    background: var(--accent-orange);
    color: #fff;
    border-color: var(--accent-orange);
}

.article-meta .category-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 2px 14px;
    border-radius: 20px;
    margin-right: 10px;
}
.category-policy { background: rgba(234, 88, 12, 0.12); color: #ea580c; }
.category-trend { background: rgba(37, 99, 235, 0.12); color: #2563eb; }
.category-method { background: rgba(16, 185, 129, 0.12); color: #10b981; }

/* ============================================================
   27. 客户案例
   ============================================================ */
.case-tab-btn { transition: all 0.3s ease; }
.case-tab-btn:hover {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}
.case-tab-btn.active {
    background: var(--accent-orange);
    color: #fff;
    border-color: var(--accent-orange);
}
.case-card .result-badge .big {
    font-size: 22px;
    font-weight: 800;
    color: var(--accent-orange);
    display: block;
    line-height: 1.2;
}
.case-card .result-badge .label {
    font-size: 11px;
    color: var(--text-gray);
}
.case-card .result-badge.green .big { color: #10b981; }
.case-card .result-badge.blue .big { color: #2563eb; }

/* ============================================================
   28. 响应式设计
   ============================================================ */

/* 1200px以下 */
@media (max-width: 1200px) {
    .eco-grid { grid-template-columns: repeat(4, 1fr); gap: 14px; }
}

/* 1024px以下 */
@media (max-width: 1024px) {
    .hero-content { flex-direction: column; text-align: center; }
    .hero-text .sub-text { margin-left: auto; margin-right: auto; }
    .hero-stats { justify-content: center; }
    .about-wrap { flex-direction: column; }
    .contact-wrap { flex-direction: column; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-image img { max-width: 420px; }
    .hero-image .img-placeholder { max-width: 420px; padding: 40px 24px; }
    .hero-image .img-placeholder i { font-size: 44px; }
    .case-layout { grid-template-columns: 1fr; gap: 30px; }
    .case-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
}

/* 992px以下 */
@media (max-width: 992px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar {
        position: static;
        max-height: none;
        overflow-y: visible;
        margin-top: 10px;
    }
    .article-main { padding: 20px 24px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .pain-grid-sub { grid-template-columns: 1fr 1fr; }
    .func-grid { grid-template-columns: 1fr 1fr; }
    .effect-bar { grid-template-columns: 1fr 1fr; }
    .case-cover { padding: 0 28px; height: 260px; }
    .case-cover .cover-badge { left: 28px; }
    .case-cover .cover-result { right: 28px; }
    .case-detail-card { padding: 0 28px 32px; }
    .case-header h1 { font-size: 24px; }
    .matrix-grid { grid-template-columns: 1fr 1fr; }
    .cta-wrapper { flex-direction: column; gap: 32px; text-align: center; }
    .cta-text .desc { max-width: 100%; }
    .cta-text .trust-badges { justify-content: center; }
    .cta-text h2 { font-size: 30px; }
    .cta-form { width: 100%; padding: 28px 20px; }
    .cta-fullwidth-wrapper { flex-direction: column; gap: 32px; text-align: center; }
    .cta-features { align-items: center; }
    .cta-trust { justify-content: center; }
    .cta-fullwidth-left h2 { font-size: 28px; }
    .cta-form-card { padding: 28px 20px; }
    .channel-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 16px !important; }
}

/* 768px以下 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 30px 24px;
        gap: 18px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        transition: var(--transition);
        opacity: 0;
        border-bottom: 2px solid var(--accent-orange);
    }
    .nav-menu.active { transform: translateY(0); opacity: 1; }
    .hamburger { display: flex; }
    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

    .grid-3 { grid-template-columns: 1fr; }
    .service-grid { grid-template-columns: 1fr; }
    .matrix-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .hero-text h1 { font-size: 32px; }
    .hero-slider .hero-text h1 { font-size: 30px; }
    .hero-stats { flex-wrap: wrap; gap: 24px; }
    .section-title { font-size: 28px; }
    .solution-item { flex-direction: column; padding: 24px; }
    .stat-grid { flex-direction: column; align-items: center; }
    .cta-banner .form-inline input { min-width: 100%; }
    .cta-banner h2 { font-size: 24px; }
    .btn-nav-consult { padding: 6px 16px; font-size: 13px; }
    .logo { font-size: 18px; }
    .logo .sub { font-size: 10px; }

    .article-cover { height: 240px; padding: 0 20px; }
    .article-cover .cover-badge { top: 16px; left: 20px; gap: 8px; }
    .article-cover .cover-badge .tag { font-size: 10px; padding: 3px 12px; }
    .article-cover .cover-badge .date { font-size: 10px; padding: 3px 12px; }
    .article-cover .cover-title h1 { font-size: 20px; }
    .article-cover .cover-title p { font-size: 13px; }
    .article-cover .cover-meta { bottom: 16px; right: 20px; font-size: 11px; }
    .article-main { padding: 16px 16px 20px; }
    .article-main h1 { font-size: 20px; }
    .article-main .meta-row { flex-direction: column; align-items: flex-start; }
    .article-body .content { font-size: 15px; }
    .article-body .content .dropcap::first-letter { font-size: 38px; }
    .article-body .content h2 { font-size: 18px; }
    .article-body .content .value-grid { grid-template-columns: 1fr; }
    .article-body .content .inline-cta { padding: 18px 16px; }
    .article-body .content .inline-cta h4 { font-size: 16px; }
    .article-body .content .step-flow { padding: 14px 14px; }
    .related-grid { grid-template-columns: 1fr; }
    .article-footer { flex-direction: column; align-items: flex-start; }
    .article-author { flex-direction: column; text-align: center; }

    .case-cover {
        height: auto;
        min-height: 200px;
        flex-direction: column;
        justify-content: center;
        padding: 20px;
        text-align: center;
    }
    .case-cover .cover-badge { position: static; display: inline-block; margin-bottom: 10px; }
    .case-cover .cover-result { position: static; margin-top: 10px; }
    .case-cover .cover-result .big { font-size: 22px; }
    .case-detail-card { padding: 0 18px 24px; }
    .case-header h1 { font-size: 21px; }
    .case-header .sub-info { font-size: 13px; gap: 10px; }
    .case-main .content { font-size: 15px; }
    .case-main .content .dropcap::first-letter { font-size: 40px; }
    .case-main .content h2 { font-size: 19px; }
    .data-highlight { grid-template-columns: 1fr; }
    .data-highlight .item .num { font-size: 26px; }
    .testimonial-large { padding: 20px 18px; }
    .testimonial-large .text { font-size: 15px; }
    .case-sidebar { grid-template-columns: 1fr; }
    .case-footer { flex-direction: column; align-items: flex-start; }
    .data-table-wrap { overflow-x: auto; }
    .data-table-wrap table { min-width: 500px; }

    .eco-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .eco-item { padding: 14px 8px; font-size: 12px; min-height: 70px; }
    .eco-item i { font-size: 22px; }
    .pain-grid-sub { grid-template-columns: 1fr; }
    .func-grid { grid-template-columns: 1fr; }
    .effect-bar { grid-template-columns: 1fr; }
    .cta-section { padding: 40px 0; }
    .cta-text h2 { font-size: 24px; }
    .cta-text .desc { font-size: 15px; }
    .cta-form .form-row { flex-direction: column; gap: 0; }
    .cta-form { padding: 20px 16px; }
    .cta-text .trust-badges { gap: 16px; font-size: 13px; }
    .cta-fullwidth-section { padding: 40px 0; }
    .cta-fullwidth-left h2 { font-size: 22px; }
    .cta-fullwidth-left .cta-desc { font-size: 15px; }
    .cta-feature-item { font-size: 14px; }
    .cta-trust { gap: 16px; font-size: 13px; }
    .cta-form-card { padding: 20px 16px; }
    .cta-form-title { font-size: 17px; }
    .cta-full-submit { font-size: 15px; padding: 12px; }
    .hero-image { margin-top: 20px; width: 100%; }
    .hero-image img { max-width: 100%; max-height: 260px; object-fit: contain; }
    .hero-image .img-placeholder { max-width: 100%; padding: 30px 20px; }
    .hero-image .img-placeholder i { font-size: 36px; }
    .channel-grid { grid-template-columns: 1fr 1fr !important; gap: 12px !important; }
    .channel-card { padding: 16px 12px !important; }
    .channel-card h4 { font-size: 14px !important; }
    .channel-card .icon { font-size: 28px !important; }
    .back-to-top { bottom: 20px; right: 20px; width: 44px; height: 44px; font-size: 18px; }
    .back-to-top { bottom: 80px; }
}

/* 576px以下 */
@media (max-width: 576px) {
    .matrix-card { padding: 24px 18px; }
    .service-card { padding: 24px 18px; }
    .card { padding: 24px 18px; }
    .hero-slider .swiper-slide { padding: 60px 0 80px; }
    .container { padding: 0 16px; }
    .cta-section { padding: 40px 0; }
    .cta-text h2 { font-size: 24px; }
    .cta-text .desc { font-size: 15px; }
    .cta-form .form-row { flex-direction: column; gap: 0; }
    .cta-form { padding: 20px 16px; }
    .cta-text .trust-badges { gap: 16px; font-size: 13px; }
    .cta-fullwidth-section { padding: 40px 0; }
    .cta-fullwidth-left h2 { font-size: 22px; }
    .cta-fullwidth-left .cta-desc { font-size: 15px; }
    .cta-feature-item { font-size: 14px; }
    .cta-trust { gap: 16px; font-size: 13px; }
    .cta-form-card { padding: 20px 16px; }
    .cta-form-title { font-size: 17px; }
    .cta-full-submit { font-size: 15px; padding: 12px; }
    .article-cover { height: 190px; padding: 0 14px; }
    .article-cover .cover-title h1 { font-size: 16px; }
    .article-cover .cover-title p { font-size: 12px; }
    .article-cover .cover-meta { display: none; }
    .article-main { padding: 12px 12px 16px; }
    .article-main h1 { font-size: 17px; }
    .article-body .content { font-size: 14px; }
    .article-body .content .dropcap::first-letter { font-size: 30px; }
    .case-cover { min-height: 160px; padding: 16px; }
    .case-cover .cover-badge { font-size: 10px; padding: 3px 14px; }
    .case-cover .cover-result .big { font-size: 18px; }
    .case-cover .cover-result .label { font-size: 10px; }
    .case-detail-card { padding: 0 12px 18px; }
    .case-header h1 { font-size: 18px; }
    .case-main .content { font-size: 14px; }
    .case-main .content .dropcap::first-letter { font-size: 32px; }
    .case-main .content h2 { font-size: 17px; }
    .tech-tags span { font-size: 11px; padding: 4px 12px; }
    .testimonial-large .text { font-size: 14px; }
    .eco-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .hero-image img { max-height: 200px; }
    .hero-image .img-placeholder { padding: 20px 16px; }
    .hero-image .img-placeholder i { font-size: 28px; }
}

html { scroll-behavior: smooth; }

/* ============================================================
   企业文化 · 金字塔风格
   ============================================================ */

/* 金字塔容器 */
.culture-pyramid {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px 0 10px;
}

/* 顶层：学习型组织 */
.pyramid-top {
    text-align: center;
    margin-bottom: 24px;
    position: relative;
}
.pyramid-top .top-label {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-orange), #f97316);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    padding: 6px 24px;
    border-radius: 50px;
    letter-spacing: 2px;
    text-transform: uppercase;
    box-shadow: 0 4px 20px rgba(234, 88, 12, 0.25);
}
.pyramid-top .top-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary-dark);
    margin-top: 12px;
    letter-spacing: 1px;
}
.pyramid-top .top-title span {
    color: var(--accent-orange);
}
.pyramid-top .top-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-orange), transparent);
    margin: 10px auto 0;
    border-radius: 4px;
}

/* 中层：三大支柱 */
.pyramid-middle {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 0 auto 28px;
    position: relative;
    padding: 0 20px;
}
.pyramid-middle::before {
    content: '';
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 16px solid transparent;
    border-right: 16px solid transparent;
    border-bottom: 16px solid var(--gray-bg);
}
.pyramid-middle .mid-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 22px 20px 18px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    border: 1px solid #f1f5f9;
    transition: all 0.3s ease;
    position: relative;
}
.pyramid-middle .mid-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}
.pyramid-middle .mid-card .icon {
    font-size: 28px;
    display: block;
    margin-bottom: 6px;
}
.pyramid-middle .mid-card .label {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
    letter-spacing: 1px;
}
.pyramid-middle .mid-card .title {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-top: 4px;
}
.pyramid-middle .mid-card .desc {
    font-size: 13px;
    color: var(--text-gray);
    margin-top: 4px;
    line-height: 1.5;
}
/* 三张卡片不同颜色点缀 */
.pyramid-middle .mid-card:nth-child(1) {
    border-top: 3px solid var(--accent-orange);
}
.pyramid-middle .mid-card:nth-child(2) {
    border-top: 3px solid var(--primary-light);
}
.pyramid-middle .mid-card:nth-child(3) {
    border-top: 3px solid #10b981;
}

/* 底层：六大行为准则 */
.pyramid-bottom {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
    margin: 0 auto;
    padding: 0 10px;
}
.pyramid-bottom .bot-item {
    background: var(--white);
    border-radius: var(--radius);
    padding: 16px 10px;
    text-align: center;
    border: 1px solid #f1f5f9;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}
.pyramid-bottom .bot-item:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--accent-orange);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}
.pyramid-bottom .bot-item .icon {
    font-size: 22px;
    display: block;
    margin-bottom: 4px;
}
.pyramid-bottom .bot-item .name {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-dark);
}
.pyramid-bottom .bot-item .sub {
    font-size: 11px;
    color: var(--text-light);
    display: block;
    margin-top: 2px;
}

/* 连接线装饰（金字塔视觉） */
.pyramid-connector {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin: 6px auto 16px;
}
.pyramid-connector span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #e2e8f0;
}
.pyramid-connector span.active {
    background: var(--accent-orange);
    width: 10px;
    height: 10px;
}

/* 响应式 */
@media (max-width: 992px) {
    .pyramid-middle {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .pyramid-middle .mid-card:last-child {
        grid-column: span 2;
    }
    .pyramid-bottom {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
    .pyramid-top .top-title {
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    .pyramid-middle {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .pyramid-middle .mid-card:last-child {
        grid-column: span 1;
    }
    .pyramid-bottom {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    .pyramid-bottom .bot-item {
        padding: 12px 8px;
    }
    .pyramid-bottom .bot-item .name {
        font-size: 13px;
    }
    .pyramid-top .top-title {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .pyramid-bottom {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    .pyramid-middle .mid-card {
        padding: 16px 14px;
    }
    .pyramid-top .top-title {
        font-size: 18px;
    }
}