/* 全新的现代风格设计 */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #32936f;
    --secondary: #106466;
    --accent: #ffb703;
    --background: #f7f9fc;
    --dark: #2d3748;
    --light: #ffffff;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --border-radius: 16px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

/* 基础样式 */
body {
    font-family: 'Poppins', 'Microsoft YaHei', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background);
    color: var(--dark);
    line-height: 1.6;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
}

/* 头部样式 */
.header {
    position: relative;
    text-align: center;
    padding: 60px 20px 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--light);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    margin-bottom: 30px;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='rgba(255,255,255,0.05)' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E") repeat;
    opacity: 0.1;
    z-index: 0;
}

.logo {
    width: 90px;
    height: 90px;
    margin: 0 auto 20px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light);
    font-size: 22px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1;
    position: relative;
}

.title {
    font-size: 32px;
    margin: 0 0 12px;
    color: var(--light);
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 25px;
    position: relative;
    z-index: 1;
}

/* 广告样式 */
.ad-banner {
    /*margin: 20px 10px;*/
    /*padding: 10px;*/
    /*background-color: var(--light);*/
    /*border-radius: var(--border-radius);*/
    /*box-shadow: var(--shadow);*/
}

.ad-banner img {
    max-width: 100%;
    border-radius: calc(var(--border-radius) - 10px);
}

/* 滚动提示样式 */
.scroll-tip {
    text-align: center;
    margin: 15px 0 0;
    position: relative;
    z-index: 1;
}

.scroll-icon {
    font-size: 22px;
    margin-bottom: 4px;
    animation: float 1.5s ease-in-out infinite;
}

.scroll-text {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* 分类网格样式 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 20px;
    padding: 10px 20px;
}

.category-card {
    background-color: var(--light);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    border-color: var(--primary);
}

.category-content {
    padding: 25px 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    position: relative;
}

.category-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--secondary);
    position: relative;
}

.category-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 40px;
    height: 3px;
    background-color: var(--accent);
    border-radius: 2px;
}

.category-desc {
    font-size: 16px;
    color: #666;
    line-height: 1.5;
    margin-bottom: 15px;
}

.category-count {
    display: inline-block;
    background-color: rgba(50, 147, 111, 0.1);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 500;
    margin-top: auto;
    margin-bottom: 15px;
}

.view-btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    text-align: center;
    margin-left: auto;
}

.view-btn:hover {
    background: var(--secondary);
    transform: scale(1.05);
}

/* 教程列表样式 */
.tutorial-list {
    padding: 10px 20px 30px;
}

.tutorial-item {
    background-color: var(--light);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.tutorial-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    border-color: var(--primary);
}

.tutorial-header {
    display: flex;
    align-items: center;
    padding: 18px 20px;
    background-color: rgba(50, 147, 111, 0.08);
    cursor: pointer;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.tutorial-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    margin-right: 15px;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(50, 147, 111, 0.2);
}

.tutorial-title {
    font-size: 17px;
    font-weight: 500;
    color: var(--dark);
    flex-grow: 1;
}

.tutorial-duration {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 5px 12px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 500;
}

.tutorial-content {
    padding: 20px;
}

.tutorial-desc {
    margin-bottom: 20px;
    line-height: 1.7;
    color: #555;
    font-size: 15px;
}

.tutorial-btn {
    display: inline-block;
    padding: 10px 25px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(50, 147, 111, 0.2);
    text-align: center;
}

.tutorial-btn:hover {
    background: var(--secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(50, 147, 111, 0.3);
}

/* 返回按钮样式 */
.back-btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    background-color: rgba(50, 147, 111, 0.1);
    color: var(--primary);
    text-decoration: none;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    margin: 20px 0 10px 20px;
    transition: var(--transition);
}

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

.back-btn:before {
    content: "←";
    margin-right: 8px;
    font-weight: 700;
}

/* 客服服务样式 */
.service-content {
    background-color: var(--light);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    margin: 20px;
}

.service-message {
    margin-bottom: 25px;
}

.greeting {
    font-weight: 600;
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--secondary);
}

.message-text {
    line-height: 1.7;
    color: #555;
    text-indent: 1em;
    font-size: 16px;
}

.service-buttons {
    text-align: center;
    margin: 30px 0;
}

.service-btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(50, 147, 111, 0.2);
    margin: 10px 5px;
}

.service-btn:hover {
    background: var(--secondary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(50, 147, 111, 0.3);
}

.service-contact {
    text-align: center;
    margin-top: 25px;
}

.service-contact p {
    margin: 15px 0;
    line-height: 1.7;
    color: #555;
    font-size: 16px;
}

.phone-number {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary);
    margin: 20px 0;
    padding: 15px;
    background-color: rgba(50, 147, 111, 0.1);
    border-radius: 12px;
    display: inline-block;
}

.thank-note {
    font-style: italic;
    margin-top: 25px;
    color: #777;
    font-size: 15px;
}

/* 承诺部分样式 */
.service-commitment {
    padding: 30px 20px;
}

.commitment-title {
    text-align: center;
    font-size: 24px;
    color: var(--secondary);
    margin-bottom: 30px;
    font-weight: 600;
    position: relative;
}

.commitment-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent);
    border-radius: 2px;
}

.commitment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    padding: 0 10px;
}

.commitment-item {
    background-color: var(--light);
    border-radius: var(--border-radius);
    padding: 25px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.commitment-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    border-color: var(--primary);
}

.commitment-icon {
    font-size: 38px;
    margin-bottom: 15px;
    color: var(--primary);
}

.commitment-item h4 {
    font-size: 18px;
    color: var(--secondary);
    margin-bottom: 12px;
    font-weight: 600;
}

.commitment-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.6;
}

/* 客服入口样式 */
.service-entry {
    margin: 15px 20px;
}

.service-link {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(50, 147, 111, 0.1), rgba(16, 100, 102, 0.1));
    padding: 20px;
    border-radius: var(--border-radius);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    border: 1px solid rgba(50, 147, 111, 0.1);
}

.service-link:hover {
    background: linear-gradient(135deg, rgba(50, 147, 111, 0.2), rgba(16, 100, 102, 0.2));
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.service-icon {
    font-size: 36px;
    margin-right: 20px;
    color: var(--primary);
}

.service-text h3 {
    font-size: 20px;
    color: var(--secondary);
    margin: 0 0 8px 0;
    font-weight: 600;
}

.service-text p {
    font-size: 15px;
    color: #666;
    margin: 0;
    line-height: 1.5;
}

/* 浮动客服样式 */
.float-customer-service {
    position: fixed;
    right: 20px;
    top: 20px;
    z-index: 1000;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.float-service-icon {
    width: 60px;
    height: 60px;
    transition: var(--transition);
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.float-service-text {
    margin-top: 5px;
    text-align: center;
    color: var(--dark);
    font-size: 12px;
    font-weight: 500;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 4px 10px;
    border-radius: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 加载样式 */
.loading {
    text-align: center;
    padding: 30px 0;
}

.progress-bar {
    width: 200px;
    height: 4px;
    background-color: rgba(50, 147, 111, 0.2);
    margin: 0 auto 10px;
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 30%;
    background-color: var(--primary);
    animation: progress 1.5s ease-in-out infinite;
}

.loading-text {
    color: var(--secondary);
    font-size: 14px;
    font-weight: 500;
}

@keyframes progress {
    0% {
        left: -30%;
    }
    100% {
        left: 100%;
    }
}

/* 手机端导航菜单 */
.mobile-nav {
    display: none;
}

/* 底部固定导航栏 */
.bottom-nav {
    display: none;
}

/* 响应式调整 */
@media (max-width: 768px) {
    body {
        padding-bottom: 70px; /* 为底部导航栏留出空间 */
    }

    .header {
        padding: 30px 15px 30px;
        border-radius: 0;
    }

    .title {
        font-size: 24px;
    }

    .subtitle {
        font-size: 15px;
    }

    .logo {
        width: 70px;
        height: 70px;
        font-size: 18px;
        margin-bottom: 15px;
    }

    /* 手机端卡片网格调整 */
    .category-grid {
        grid-template-columns: 1fr;
        padding: 10px 15px;
        gap: 15px;
    }

    .category-card {
        margin-bottom: 0;
        border-radius: 12px;
    }

    .category-content {
        padding: 20px 15px;
    }

    .category-title {
        font-size: 20px;
    }

    .category-desc {
        font-size: 14px;
        margin-bottom: 12px;
    }

    /* 教程列表调整 */
    .tutorial-list {
        padding: 10px 15px;
    }

    .tutorial-item {
        border-radius: 12px;
        margin-bottom: 15px;
    }

    .tutorial-header {
        padding: 15px;
        flex-wrap: wrap;
    }

    .tutorial-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
        margin-right: 12px;
    }

    .tutorial-title {
        font-size: 16px;
        width: calc(100% - 152px); /* 腾出空间放置duration标签 */
    }

    .tutorial-duration {
        font-size: 12px;
        padding: 4px 10px;
    }

    .tutorial-content {
        padding: 15px;
    }

    .tutorial-desc {
        font-size: 14px;
        margin-bottom: 15px;
    }

    .tutorial-btn {
        padding: 8px 20px;
        font-size: 14px;
        width: 100%; /* 按钮全宽 */
        display: block;
        text-align: center;
        box-sizing: border-box;
    }

    /* 返回按钮样式调整 */
    .back-btn {
        font-size: 14px;
        padding: 8px 15px;
        margin: 15px 0 10px 15px;
    }

    /* 客服样式调整 */
    .service-content {
        padding: 20px 15px;
        margin: 15px;
    }

    .greeting {
        font-size: 18px;
    }

    .message-text {
        font-size: 15px;
    }

    .service-btn {
        padding: 10px 20px;
        font-size: 15px;
        margin: 8px 3px;
        display: block;
    }

    .phone-number {
        font-size: 20px;
        padding: 12px;
    }

    /* 客服入口调整 */
    .service-entry {
        margin: 10px 15px;
    }

    .service-link {
        padding: 15px;
    }

    .service-icon {
        font-size: 30px;
        margin-right: 15px;
    }

    .service-text h3 {
        font-size: 18px;
    }

    .service-text p {
        font-size: 14px;
    }

    /* 浮动客服调整 */
    .float-customer-service {
        right: 15px;
        /*bottom: 80px; !* 放在底部导航栏上方 *!*/
        /*top: auto;*/
        top: 15%;
    }

    .float-service-icon {
        width: 45px;
        height: 45px;
    }

    .float-service-text {
        font-size: 10px;
    }

    /* 移动端导航菜单 */
    .mobile-nav {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        background-color: var(--light);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        z-index: 100;
        padding: 12px 15px;
        box-sizing: border-box;
    }

    .mobile-nav-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .mobile-logo {
        display: flex;
        align-items: center;
        color: var(--primary);
        font-weight: 600;
        font-size: 18px;
        text-decoration: none;
    }

    .mobile-logo i {
        font-size: 20px;
        margin-right: 8px;
    }

    .menu-toggle {
        background: none;
        border: none;
        color: var(--dark);
        font-size: 20px;
        cursor: pointer;
        padding: 5px;
    }

    .mobile-menu {
        display: none;
        background-color: var(--light);
        padding: 15px 0;
        margin-top: 10px;
        border-radius: 8px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    .mobile-menu.active {
        display: block;
    }

    .mobile-menu-item {
        padding: 10px 15px;
        display: block;
        color: var(--dark);
        text-decoration: none;
        font-size: 15px;
        transition: var(--transition);
    }

    .mobile-menu-item.active {
        color: var(--primary);
        background-color: rgba(50, 147, 111, 0.1);
    }

    .mobile-menu-item:hover {
        background-color: rgba(50, 147, 111, 0.05);
    }

    .mobile-menu-item i {
        margin-right: 8px;
    }

    /* 底部导航栏 */
    .bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background-color: var(--light);
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
        z-index: 100;
    }

    .bottom-nav-item {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 10px 0;
        color: var(--dark);
        text-decoration: none;
        font-size: 12px;
        transition: var(--transition);
    }

    .bottom-nav-item.active {
        color: var(--primary);
    }

    .bottom-nav-item i {
        font-size: 20px;
        margin-bottom: 2px;
    }

    /* 内容调整，为顶部导航留出空间 */
    .container {
        padding-top: 60px;
    }

    /* 承诺项调整 */
    .commitment-grid {
        grid-template-columns: 1fr;
    }
}

/* 平板尺寸调整 */
@media (min-width: 769px) and (max-width: 1024px) {
    .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }

    .category-title {
        font-size: 20px;
    }
}

/* iPhone SE 和其他小屏手机适配 */
@media (max-width: 375px) {
    .title {
        font-size: 22px;
    }

    .tutorial-title {
        width: calc(100% - 140px);
        font-size: 15px;
    }

    .tutorial-icon {
        width: 35px;
        height: 35px;
        font-size: 16px;
        margin-right: 10px;
    }
}

/* 超宽屏幕优化 */
@media (min-width: 1600px) {
    .container {
        max-width: 1400px;
        margin: 0 auto;
    }
}