/* ========================================
   尧图网站开发 - 全局样式文件
   风格：咖啡 ins 风 | 奶白 + 浅棕 + 浅蓝
   ======================================== */

/* CSS Reset & 基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background-color: #FDFBF7;
    color: #4A4A4A;
    line-height: 1.8;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 颜色变量 */
:root {
    --cream-white: #FDFBF7;
    --light-brown: #C4A57B;
    --deep-brown: #8B7355;
    --light-blue: #B8D4E3;
    --deep-blue: #6B8E9F;
    --text-dark: #4A4A4A;
    --text-light: #7A7A7A;
    --border-color: #E8E4DC;
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   顶部导航栏
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: all 0.4s ease;
    padding: 20px 0;
}

.header.scrolled {
    background: rgba(253, 251, 247, 0.98);
    box-shadow: 0 2px 20px rgba(139, 115, 85, 0.1);
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--deep-brown);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-dark);
    padding: 10px 0;
    position: relative;
    display: inline-block;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--light-brown);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--deep-brown);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 30px;
    height: 3px;
    background: var(--deep-brown);
    transition: all 0.3s ease;
}

.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);
}

/* 移动端菜单 */
@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--cream-white);
        flex-direction: column;
        padding: 100px 40px;
        gap: 30px;
        transition: right 0.4s ease;
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        right: 0;
    }

    .hamburger {
        display: flex;
    }
}

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

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

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--deep-brown);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--light-brown), var(--light-blue));
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 30px auto 0;
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-block;
    padding: 15px 40px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--light-brown);
    color: #fff;
}

.btn-primary:hover {
    background: var(--deep-brown);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(196, 165, 123, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--deep-brown);
    border: 2px solid var(--deep-brown);
}

.btn-secondary:hover {
    background: var(--deep-brown);
    color: #fff;
}

/* ========================================
   卡片样式
   ======================================== */
.card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.card-content {
    padding: 30px;
}

.card-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--deep-brown);
    margin-bottom: 15px;
}

.card-text {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: var(--text-light);
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: linear-gradient(135deg, var(--deep-brown) 0%, #6B5B4A 100%);
    color: #fff;
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 50px;
    margin-bottom: 60px;
}

.footer-logo {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--light-brown);
}

.footer-desc {
    font-size: 15px;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 25px;
}

.footer-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--light-brown);
}

.footer-links li {
    margin-bottom: 15px;
}

.footer-links a {
    font-size: 15px;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--light-brown);
    padding-left: 10px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    font-size: 15px;
    opacity: 0.9;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    font-size: 14px;
    opacity: 0.8;
}

@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   动画效果
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   面包屑导航
   ======================================== */
.breadcrumb {
    padding: 150px 0 50px;
    background: linear-gradient(135deg, var(--cream-white) 0%, #F5F0E8 100%);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
}

.breadcrumb-list a {
    color: var(--text-light);
    transition: color 0.3s ease;
}

.breadcrumb-list a:hover {
    color: var(--deep-brown);
}

.breadcrumb-list .current {
    color: var(--deep-brown);
    font-weight: 600;
}

.breadcrumb-separator {
    color: var(--light-brown);
}

/* ========================================
   分页样式
   ======================================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.pagination a,
.pagination span {
    display: inline-block;
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 15px;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

.pagination a:hover,
.pagination .active {
    background: var(--light-brown);
    color: #fff;
    border-color: var(--light-brown);
}

/* ========================================
   响应式调整
   ======================================== */
@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 32px;
    }

    .container {
        padding: 0 15px;
    }
}