/* 新疆学历提升网 - 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0066cc;
    --primary-dark: #004c99;
    --primary-light: #3399ff;
    --secondary-color: #e6f3ff;
    --accent-color: #ff6b35;
    --accent-secondary: #ff9f6b;
    --text-dark: #1a1a2e;
    --text-light: #666;
    --text-medium: #444;
    --white: #fff;
    --gray-light: #f8fafc;
    --gray-medium: #e8ecf1;
    --border-color: #e0e6ed;
    --success: #10b981;
    --shadow-sm: 0 2px 8px rgba(0, 102, 204, 0.08);
    --shadow-md: 0 8px 25px rgba(0, 102, 204, 0.12);
    --shadow-lg: 0 15px 50px rgba(0, 102, 204, 0.18);
    --shadow-xl: 0 25px 80px rgba(0, 102, 204, 0.22);
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.7;
    background: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 头部导航 */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 22px;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.35);
    transition: all 0.3s ease;
}

.logo:hover .logo-icon {
    transform: rotate(10deg) scale(1.05);
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.logo-text span {
    font-size: 12px;
    color: var(--text-light);
    font-weight: 400;
    display: block;
    letter-spacing: 0.5px;
}

.nav {
    display: flex;
    gap: 8px;
}

.nav a {
    font-size: 15px;
    color: var(--text-medium);
    padding: 10px 18px;
    border-radius: 25px;
    position: relative;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav a:hover {
    color: var(--primary-color);
    background: var(--secondary-color);
}

.nav a.active {
    color: var(--white);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.nav a.active:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 26px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* 主内容区域 */
.main {
    padding-top: 76px;
}

/* 横幅区域 */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0088ff 50%, var(--primary-light) 100%);
    color: var(--white);
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255,255,255,0.08) 0%, transparent 70%);
    animation: heroFloat 20s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, rgba(255,255,255,0.05), transparent);
}

@keyframes heroFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-30px, 30px) rotate(5deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.hero-text {
    flex: 1;
}

.hero h1 {
    font-size: 52px;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.hero p {
    font-size: 18px;
    opacity: 0.95;
    margin-bottom: 32px;
    max-width: 520px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    flex-shrink: 0;
    width: 380px;
    height: 320px;
    background: rgba(255,255,255,0.1);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 140px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    gap: 8px;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.5);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
    border-color: var(--white);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    color: var(--white);
    box-shadow: 0 8px 30px rgba(255, 107, 53, 0.4);
}

.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(255, 107, 53, 0.5);
}

/* 统计区域 */
.stats {
    background: var(--white);
    padding: 50px 0;
    margin-top: -50px;
    position: relative;
    z-index: 2;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    padding: 32px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    border-radius: 16px;
    transition: all 0.3s ease;
    position: relative;
}

.stat-item::after {
    content: '';
    position: absolute;
    right: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background: var(--gray-medium);
}

.stat-item:last-child::after {
    display: none;
}

.stat-item:hover {
    background: var(--secondary-color);
}

.stat-icon {
    font-size: 42px;
    margin-bottom: 12px;
    display: inline-block;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.stat-number {
    font-size: 44px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    font-size: 15px;
    color: var(--text-light);
    margin-top: 8px;
    font-weight: 500;
}

/* 通用区块 */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--secondary-color);
    color: var(--primary-color);
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 40px;
    color: var(--text-dark);
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
}

.section-header p {
    color: var(--text-light);
    font-size: 16px;
    margin-top: 12px;
}

.bg-light {
    background: linear-gradient(180deg, var(--gray-light) 0%, var(--white) 100%);
}

.bg-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
}

/* 课程卡片 */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.course-card {
    background: var(--white);
    border-radius: 24px;
    padding: 40px 32px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.course-card:hover::before {
    transform: scaleX(1);
}

.course-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.course-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, var(--secondary-color), #d4ebff);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 42px;
    transition: all 0.3s ease;
}

.course-card:hover .course-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.course-card:hover .course-icon::before {
    filter: grayscale(0);
}

.course-icon::before {
    filter: grayscale(0);
    transition: filter 0.3s ease;
}

.course-card h3 {
    font-size: 22px;
    color: var(--text-dark);
    margin-bottom: 14px;
    font-weight: 600;
}

.course-card p {
    color: var(--text-light);
    font-size: 15px;
    margin-bottom: 24px;
    line-height: 1.7;
}

.course-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 25px;
    background: var(--secondary-color);
    transition: all 0.3s ease;
}

.course-link:hover {
    background: var(--primary-color);
    color: var(--white);
    gap: 12px;
}

/* 优势区块 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card {
    background: var(--white);
    border-radius: 24px;
    padding: 48px 32px;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.advantage-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.advantage-card:hover::after {
    transform: scaleX(1);
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.advantage-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 28px;
    font-size: 44px;
    color: var(--white);
    box-shadow: 0 10px 40px rgba(0, 102, 204, 0.3);
    transition: all 0.3s ease;
}

.advantage-card:hover .advantage-icon {
    transform: scale(1.1);
    box-shadow: 0 15px 50px rgba(0, 102, 204, 0.4);
}

.advantage-card h3 {
    font-size: 22px;
    margin-bottom: 14px;
    color: var(--text-dark);
    font-weight: 600;
}

.advantage-card p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.7;
}

/* 师资团队 */
.teachers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.teacher-card {
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.teacher-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.teacher-card:hover::before {
    opacity: 0.95;
}

.teacher-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
}

.teacher-card:hover .teacher-info h3,
.teacher-card:hover .teacher-title,
.teacher-card:hover .teacher-desc {
    color: var(--white);
}

.teacher-card:hover .teacher-info p {
    color: rgba(255,255,255,0.85);
}

.teacher-photo {
    width: 100%;
    height: 240px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 90px;
    color: rgba(255, 255, 255, 0.7);
}

.teacher-info {
    padding: 28px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.teacher-info h3 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 600;
    transition: color 0.3s ease;
}

.teacher-title {
    color: var(--primary-color);
    font-size: 14px;
    margin-bottom: 10px;
    font-weight: 600;
    transition: color 0.3s ease;
}

.teacher-desc {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
    transition: color 0.3s ease;
}

/* 新闻列表 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.news-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 70px;
    color: rgba(255, 255, 255, 0.6);
    position: relative;
    overflow: hidden;
}

.news-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(0,0,0,0.1), transparent);
}

.news-content {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-date {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.news-title {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 14px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-weight: 600;
    transition: color 0.3s ease;
}

.news-title:hover {
    color: var(--primary-color);
}

.news-excerpt {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-color);
    font-size: 14px;
    margin-top: 16px;
    font-weight: 600;
}

.news-link:hover {
    gap: 10px;
}

/* 新闻列表页样式 */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-list-item {
    display: flex;
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.news-list-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.news-list-item .news-image {
    width: 320px;
    min-height: 240px;
    flex-shrink: 0;
}

.news-list-item .news-content {
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 流程步骤 */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 55px;
    left: 10%;
    right: 10%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
    z-index: 0;
}

.step-item {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 110px;
    height: 110px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    font-weight: 700;
    margin: 0 auto 24px;
    box-shadow: 0 10px 40px rgba(0, 102, 204, 0.35);
    transition: all 0.3s ease;
    position: relative;
}

.step-number::after {
    content: '';
    position: absolute;
    inset: -8px;
    border: 3px dashed var(--primary-color);
    border-radius: 50%;
    opacity: 0.3;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.step-item:hover .step-number {
    transform: scale(1.1);
    box-shadow: 0 15px 50px rgba(0, 102, 204, 0.45);
}

.step-item h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-dark);
    font-weight: 600;
}

.step-item p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.6;
}

/* 关于我们 */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    width: 100%;
    height: 480px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 150px;
    color: rgba(255, 255, 255, 0.6);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: shine 5s ease-in-out infinite;
}

@keyframes shine {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-30px, 30px); }
}

.about-content h2 {
    font-size: 40px;
    margin-bottom: 24px;
    color: var(--text-dark);
    font-weight: 700;
}

.about-content p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 24px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 32px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--secondary-color);
    border-radius: 14px;
    transition: all 0.3s ease;
}

.about-feature:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateX(5px);
}

.about-feature-icon {
    width: 52px;
    height: 52px;
    background: var(--white);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    transition: all 0.3s ease;
}

.about-feature:hover .about-feature-icon {
    background: rgba(255,255,255,0.2);
}

.about-feature span {
    font-size: 16px;
    font-weight: 600;
}

/* 联系表单 */
.contact-section {
    background: linear-gradient(180deg, var(--gray-light) 0%, var(--white) 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 24px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: var(--white);
    flex-shrink: 0;
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.3);
}

.contact-item h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 600;
}

.contact-item p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.7;
}

.contact-form {
    background: var(--white);
    padding: 48px;
    border-radius: 28px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--gray-medium);
    border-radius: 14px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--gray-light);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.btn-submit {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    padding: 18px;
    border: none;
    border-radius: 14px;
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s ease;
    box-shadow: 0 8px 30px rgba(0, 102, 204, 0.35);
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 102, 204, 0.45);
}

/* CTA区域 */
.cta {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    padding: 100px 0;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="15" fill="rgba(255,255,255,0.05)"/><circle cx="80" cy="60" r="25" fill="rgba(255,255,255,0.03)"/><circle cx="40" cy="80" r="10" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: 200px;
}

.cta h2 {
    font-size: 42px;
    margin-bottom: 16px;
    font-weight: 700;
}

.cta p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

.cta .phone {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 32px;
    letter-spacing: 3px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

/* 页脚 */
.footer {
    background: linear-gradient(180deg, #1a2a3a 0%, #0f1922 100%);
    color: var(--white);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-about h3,
.footer-links h4 {
    font-size: 20px;
    margin-bottom: 24px;
}

.footer-about p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 24px;
}

.footer-links ul li {
    margin-bottom: 14px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer-links ul li a::before {
    content: '›';
    font-size: 18px;
    opacity: 0;
    transition: all 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--white);
    padding-left: 8px;
}

.footer-links ul li a:hover::before {
    opacity: 1;
}

.footer-contact li {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: var(--white);
}

/* 内页横幅 */
.page-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    padding: 120px 0 70px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="80" cy="20" r="20" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: 200px;
}

.page-hero h1 {
    font-size: 46px;
    margin-bottom: 16px;
    font-weight: 700;
    position: relative;
}

.page-hero p {
    font-size: 18px;
    opacity: 0.9;
    position: relative;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 18px 0;
    background: var(--gray-light);
}

.breadcrumb-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--text-light);
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb span {
    color: var(--primary-color);
}

/* 浮动客服按钮 */
.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.float-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--white);
    cursor: pointer;
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    border: none;
    position: relative;
}

.float-btn:hover {
    transform: scale(1.1);
}

.float-btn-phone {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.float-btn-wechat {
    background: linear-gradient(135deg, #07c160, #06ad56);
}

.float-btn-top {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}

.float-btn-top.show {
    opacity: 1;
    pointer-events: auto;
}

.float-btn-top:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* Tooltip */
.tooltip {
    position: absolute;
    right: 70px;
    background: var(--white);
    color: var(--text-dark);
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 14px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.float-btn:hover .tooltip {
    opacity: 1;
    visibility: visible;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero h1 {
        font-size: 42px;
    }

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

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

    .hero-visual {
        width: 300px;
        height: 260px;
        font-size: 100px;
    }

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

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

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

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

    .steps-grid::before {
        display: none;
    }

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

    .about-image {
        height: 350px;
        font-size: 100px;
    }

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

@media (max-width: 768px) {
    .header-inner {
        padding: 10px 16px;
    }

    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 8px;
        box-shadow: var(--shadow-md);
    }

    .nav.active {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .hero {
        padding: 80px 0 60px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero-visual {
        display: none;
    }

    .section {
        padding: 70px 0;
    }

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

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        padding: 24px;
        gap: 16px;
    }

    .stat-number {
        font-size: 36px;
    }

    .stat-item::after {
        display: none;
    }

    .courses-grid,
    .advantages-grid,
    .news-grid,
    .teachers-grid {
        grid-template-columns: 1fr;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

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

    .news-list-item {
        flex-direction: column;
    }

    .news-list-item .news-image {
        width: 100%;
        height: 180px;
    }

    .page-hero h1 {
        font-size: 34px;
    }

    .cta .phone {
        font-size: 40px;
    }

    .contact-form {
        padding: 32px;
    }

    .floating-contact {
        bottom: 20px;
        right: 20px;
    }

    .float-btn {
        width: 54px;
        height: 54px;
        font-size: 24px;
    }
}