/* ===== 全局重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'PingFang SC', -apple-system, sans-serif;
    background: #F8FAFC;
    color: #1A1A2E;
    line-height: 1.6;
    scroll-behavior: smooth; /* 新增平滑滚动 */
}

a {
    text-decoration: none;
    color: inherit;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    background: rgba(11, 26, 47, 0.92);
    backdrop-filter: blur(12px);
    padding: 16px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.35rem;
    color: #fff;
    letter-spacing: -0.5px;
}
.logo i {
    color: #FF6B35;
    font-size: 1.8rem;
}
.logo span {
    color: #4A90D9;
}
.nav-links {
    display: flex;
    gap: 32px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    font-size: 0.95rem;
}
.nav-links a:hover {
    color: #FF6B35;
    transition: 0.3s;
}
.nav-cta {
    background: #FF6B35;
    color: #fff;
    padding: 10px 28px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: 0.3s;
    border: none;
    cursor: pointer;
}
.nav-cta:hover {
    background: #e85a2a;
    transform: scale(1.04);
}
.hamburger {
    display: none;
    color: #fff;
    font-size: 1.6rem;
    cursor: pointer;
}

/* ===== Hero 区域 ===== */
.hero {
    background: linear-gradient(135deg, #0B1A2F 0%, #1A3A5C 100%);
    padding: 140px 0 100px;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: '';
    position: absolute;
    right: -10%;
    top: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.hero-text h1 {
    font-size: 3.8rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -1px;
    line-height: 1.1;
    margin-bottom: 16px;
}
/* 修复渐变文字（正确写法） */
.hero-text h1 span {
    background: linear-gradient(135deg, #FF6B35, #F7931E);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}
.hero-text .sub {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 12px;
    font-weight: 400;
}
.hero-text .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 20px 0 32px;
}
.hero-text .tags span {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    padding: 6px 18px;
    border-radius: 40px;
    color: #fff;
    font-size: 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.12);
}
.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.btn-primary {
    background: #FF6B35;
    color: #fff;
    padding: 14px 40px;
    border-radius: 60px;
    font-weight: 600;
    transition: 0.3s;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary:hover {
    background: #e85a2a;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(255, 107, 53, 0.35);
}
.btn-outline {
    background: transparent;
    color: #fff;
    padding: 14px 36px;
    border-radius: 60px;
    font-weight: 600;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    transition: 0.3s;
    cursor: pointer;
    font-size: 1rem;
}
.btn-outline:hover {
    border-color: #FF6B35;
    background: rgba(255, 107, 53, 0.1);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    border-radius: 28px;
    padding: 32px 28px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.hero-stat {
    text-align: center;
    padding: 12px 0;
}
.hero-stat .number {
    font-size: 2.6rem;
    font-weight: 800;
    color: #FF6B35;
}
.hero-stat .label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    margin-top: 2px;
}

/* ===== 通用标题 ===== */
.section-title {
    text-align: center;
    margin-bottom: 48px;
}
.section-title h2 {
    font-size: 2.4rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #0B1A2F;
}
.section-title h2 span {
    color: #FF6B35;
}
.section-title p {
    color: #6B7280;
    margin-top: 8px;
    font-size: 1.05rem;
}

/* ===== 数据条 ===== */
.data-bar {
    background: #fff;
    padding: 40px 0;
    border-bottom: 1px solid #E5E7EB;
}
.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.data-item .num {
    font-size: 2.4rem;
    font-weight: 800;
    color: #0A66C2;
}
.data-item .num i {
    color: #FF6B35;
    margin-right: 4px;
}
.data-item .lbl {
    color: #6B7280;
    font-weight: 500;
}

/* ===== 关于我们 ===== */
.about {
    padding: 80px 0;
    background: #fff;
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-image {
    background: linear-gradient(135deg, #0A66C2, #4A90D9);
    border-radius: 24px;
    height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.4rem;
    font-weight: 600;
    box-shadow: 0 20px 40px rgba(10, 102, 194, 0.25);
    position: relative;
    overflow: hidden;
}
.about-image i {
    font-size: 4rem;
    opacity: 0.3;
    position: absolute;
    right: -20px;
    bottom: -20px;
}
.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 12px;
}
.about-text p {
    color: #4B5563;
    margin-bottom: 16px;
    font-size: 1.02rem;
}
.about-features {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 32px;
    margin-top: 12px;
}
.about-features li {
    list-style: none;
    font-weight: 500;
    color: #0B1A2F;
}
.about-features li i {
    color: #FF6B35;
    margin-right: 8px;
}

/* ===== 六大板块 ===== */
.modules {
    padding: 80px 0;
    background: #F1F5F9;
}
.module-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.module-card {
    background: #fff;
    padding: 36px 28px 32px;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
    transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid #E5E7EB;
    text-align: center;
}
.module-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 48px rgba(10, 102, 194, 0.10);
    border-color: #0A66C2;
}
.module-card .icon {
    font-size: 2.6rem;
    color: #0A66C2;
    background: #EFF6FF;
    width: 72px;
    height: 72px;
    line-height: 72px;
    border-radius: 50%;
    margin: 0 auto 16px;
}
.module-card h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.module-card p {
    color: #6B7280;
    font-size: 0.95rem;
}

/* ===== 优势 ===== */
.advantages {
    padding: 80px 0;
    background: #fff;
}
.adv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.adv-card {
    background: #F8FAFC;
    padding: 32px 28px;
    border-radius: 20px;
    border-left: 5px solid #FF6B35;
    transition: 0.3s;
}
.adv-card:hover {
    background: #0B1A2F;
    color: #fff;
    border-left-color: #FF6B35;
}
.adv-card h4 {
    font-size: 1.3rem;
    margin-bottom: 6px;
}
.adv-card p {
    color: #6B7280;
    font-size: 0.95rem;
    word-break: break-word;      /* 强制英文/数字换行 */
    overflow-wrap: break-word;   /* 防止长单词溢出 */
    line-height: 1.6;            /* 增加行高，看起来更舒适 */
    padding-right: 4px;          /* 给右侧留一点呼吸空间 */
}
.adv-card:hover p {
    color: rgba(255, 255, 255, 0.7);
}

/* ===== 作品展示（带轮播） ===== */
.showcase {
    padding: 80px 0;
    background: #0B1A2F;
}
.showcase .section-title h2 {
    color: #fff;
}
.showcase .section-title p {
    color: rgba(255, 255, 255, 0.6);
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* 每个卡片 */
.showcase-item {
    position: relative;
    border-radius: 16px;
    height: 240px;
    overflow: hidden;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                box-shadow 0.4s ease;
    background: #1a2a3a; /* fallback 背景 */
}

.showcase-item:hover {
    transform: scale(1.03);
    box-shadow: 0 16px 48px rgba(255, 107, 53, 0.20);
    border-color: rgba(255, 107, 53, 0.4);
    z-index: 2;
}

/* 轮播容器（图片/视频） */
.carousel {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

/* 所有子元素默认绝对定位，铺满容器 */
.carousel > * {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease;
}

/* 单张图片：取消绝对定位，恢复正常流，直接可见 */
.carousel.single > * {
    position: relative;
    opacity: 1;
    animation: none;
}

/* 多张图片：应用轮播动画（仅当 .carousel 没有 .single 类） */
.carousel:not(.single) img {
    animation: fadeSlide 12s infinite;
    opacity: 0;
}
.carousel:not(.single) img:nth-child(1) { animation-delay: 0s; }
.carousel:not(.single) img:nth-child(2) { animation-delay: 4s; }
.carousel:not(.single) img:nth-child(3) { animation-delay: 8s; }
/* 如果只有2张，最后一张延时4s刚好，可不用额外调整 */

/* 视频专用：覆盖所有样式，只显示单个视频 */
.carousel.video-only > video {
    position: absolute;
    opacity: 1;
    animation: none;
    object-fit: cover;
}
/* 确保视频容器内的其他元素被隐藏（但通常只有一个视频） */

@keyframes fadeSlide {
    0%   { opacity: 0; transform: scale(1.05); }
    10%  { opacity: 1; transform: scale(1); }
    30%  { opacity: 1; transform: scale(1); }
    40%  { opacity: 0; transform: scale(0.95); }
    100% { opacity: 0; }
}

/* 遮罩层 */
.showcase-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.2) 60%, rgba(0,0,0,0.05) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: background 0.3s ease;
    padding: 16px;
    text-align: center;
    pointer-events: none; /* 让点击穿透，避免干扰悬停效果 */
}
.showcase-item:hover .showcase-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(255,107,53,0.15) 80%);
}
.showcase-overlay i {
    font-size: 2.8rem;
    margin-bottom: 10px;
    color: #FF6B35;
    opacity: 0.9;
    transition: transform 0.3s ease, opacity 0.3s ease;
    text-shadow: 0 4px 20px rgba(0,0,0,0.6);
}
.showcase-item:hover .showcase-overlay i {
    transform: scale(1.15);
    opacity: 1;
}
.showcase-overlay span {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.5px;
    background: rgba(0,0,0,0.3);
    padding: 4px 16px;
    border-radius: 40px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.08);
}

/* 响应式适配 */
@media (max-width: 1024px) {
    .showcase-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .showcase-grid {
        grid-template-columns: 1fr;
    }
    .showcase-item {
        height: 200px;
    }
}

/* ===== 预约洽谈 ===== */
.contact {
    padding: 80px 0;
    background: #fff;
}
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    background: #F8FAFC;
    padding: 48px;
    border-radius: 32px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
}

/* 左侧联系方式 */
.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 12px;
}
.contact-info p {
    color: #6B7280;
    margin-bottom: 24px;
    line-height: 1.8;
}
.contact-info .detail {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
    font-weight: 500;
    font-size: 1.02rem;
}
.contact-info .detail i {
    color: #FF6B35;
    width: 24px;
    font-size: 1.2rem;
}
.contact-info .detail span {
    color: #1A1A2E;
}

/* 右侧表单 */
.contact-form .form-group {
    margin-bottom: 18px;
}
.contact-form label {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 6px;
    color: #1A1A2E;
}
.contact-form label .required {
    color: #FF6B35;
    margin-left: 2px;
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    border-radius: 12px;
    border: 1px solid #E5E7EB;
    font-size: 1rem;
    font-family: inherit;
    transition: 0.3s;
    background: #fff;
}
.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #0A66C2;
    box-shadow: 0 0 0 4px rgba(10, 102, 194, 0.08);
}
.contact-form textarea {
    height: 120px;
    resize: vertical;
}
.contact-form button {
    width: 100%;
    padding: 14px;
    background: #0A66C2;
    color: #fff;
    border: none;
    border-radius: 60px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.contact-form button:hover {
    background: #084a8a;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(10, 102, 194, 0.25);
}

/* 响应式 */
@media (max-width: 1024px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
        padding: 32px;
    }
}
@media (max-width: 768px) {
    .contact-wrapper {
        padding: 24px;
    }
    .contact-info h3 {
        font-size: 1.4rem;
    }
}

/* ===== Footer ===== */
.footer {
    background: #0B1A2F;
    color: rgba(255, 255, 255, 0.7);
    padding: 48px 0 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer .container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}
.footer-col h5 {
    color: #fff;
    font-weight: 700;
    margin-bottom: 12px;
}
.footer-col a {
    display: block;
    margin-bottom: 6px;
    font-size: 0.92rem;
    transition: 0.3s;
}
.footer-col a:hover {
    color: #FF6B35;
}
.footer-bottom {
    text-align: center;
    padding-top: 32px;
    margin-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.85rem;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-text .tags {
        justify-content: center;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-card {
        max-width: 500px;
        margin: 0 auto;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
    .module-grid,
    .adv-grid,
    .showcase-grid {
        grid-template-columns: 1fr 1fr;
    }
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    .data-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hamburger {
        display: block;
    }
    .hero-text h1 {
        font-size: 2.4rem;
    }
    .module-grid,
    .adv-grid,
    .showcase-grid {
        grid-template-columns: 1fr;
    }
    .hero-card {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .hero-stat .number {
        font-size: 1.8rem;
    }
    .contact-wrapper {
        padding: 24px;
    }
    .section-title h2 {
        font-size: 1.8rem;
    }
    .data-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .data-item .num {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .hero-card {
        grid-template-columns: 1fr 1fr;
        padding: 20px 14px;
    }
    .hero-stat .number {
        font-size: 1.4rem;
    }
    .btn-primary,
    .btn-outline {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
}

/* ===== 工具类 ===== */
.text-orange {
    color: #FF6B35;
}
.mt-8 {
    margin-top: 8px;
}
.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
/* 强制修复预约洽谈标题颜色（防止被其他样式覆盖） */
.contact .section-title h2 {
    color: #0B1A2F !important;
}
.contact .section-title p {
    color: #6B7280 !important;
}