/* ===========================================
   人合自然官网 - 温暖亲子风
   =========================================== */

/* === 全局变量 === */
:root {
    --color-primary: #D98850;        /* 大地橙 - 主色 */
    --color-primary-light: #E89B5A;  /* 暖橙 - 浅主色 */
    --color-primary-dark: #B86E3C;   /* 深橙 - 主色按下 */
    --color-secondary: #6B8E5A;      /* 森林绿 - 辅色 */
    --color-secondary-light: #88A878;
    --color-accent: #F4B86E;         /* 暖黄 - 点缀 */
    --color-bg: #FBF7F0;             /* 暖米白 - 背景 */
    --color-bg-alt: #F5EBD9;         /* 米黄 - 板块底色 */
    --color-card: #FFFFFF;           /* 卡片白 */
    --color-text: #3E2A1F;           /* 深棕 - 主文字 */
    --color-text-light: #7A6655;     /* 浅棕 - 副文字 */
    --color-border: #E8DFD0;         /* 边框色 */
    --color-shadow: rgba(62, 42, 31, 0.08);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    --shadow-sm: 0 2px 8px var(--color-shadow);
    --shadow-md: 0 4px 16px rgba(62, 42, 31, 0.1);
    --shadow-lg: 0 8px 32px rgba(62, 42, 31, 0.12);
    
    --container-width: 1200px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

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

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* === 容器 === */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* === 顶部导航 === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(251, 247, 240, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(251, 247, 240, 0.95);
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    letter-spacing: 1px;
}

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

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--color-text);
    font-weight: 500;
}

.nav-link:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* === 首页 Hero === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 100px 24px 80px;
    background: linear-gradient(180deg, #FBF7F0 0%, #F5EBD9 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.5;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #F4B86E 0%, transparent 70%);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #88A878 0%, transparent 70%);
    bottom: -200px;
    left: -150px;
    animation: float 10s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #E89B5A 0%, transparent 70%);
    top: 30%;
    left: 50%;
    animation: float 12s ease-in-out infinite;
}

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

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-tagline {
    color: var(--color-secondary);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 4px;
    margin-bottom: 16px;
}

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 24px;
    letter-spacing: 2px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--color-text-light);
    margin-bottom: 48px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

/* === 按钮 === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(217, 136, 80, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(217, 136, 80, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

/* === Hero 统计 === */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 720px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
}

.stat-num {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-light);
}

/* === 通用板块 === */
.section {
    padding: 96px 0;
    position: relative;
}

.section-alt {
    background: var(--color-bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    color: var(--color-secondary);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 4px;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-desc {
    font-size: 17px;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

.subsection-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    margin: 64px 0 32px;
    text-align: center;
    position: relative;
}

.subsection-title::after {
    content: "";
    display: block;
    width: 48px;
    height: 3px;
    background: var(--color-primary);
    margin: 12px auto 0;
    border-radius: 2px;
}

/* === 关于我们 === */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-text h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    margin: 24px 0 12px;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 8px;
}

.about-text strong {
    color: var(--color-primary);
    font-weight: 700;
}

.about-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.card-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.about-card h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.about-card p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* === 团队 === */
.team-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.team-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 24px 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.team-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    font-size: 28px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.team-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.team-role {
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 8px;
}

.team-desc {
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* === 业务体系 === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

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

.service-num {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-bg-alt);
    margin-bottom: 16px;
    line-height: 1;
}

.service-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* === 课程产品 === */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 48px;
}

.course-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.course-img {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.course-emoji {
    font-size: 80px;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

.course-info {
    padding: 24px;
}

.course-tag {
    display: inline-block;
    background: var(--color-bg-alt);
    color: var(--color-primary);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.course-info h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
    line-height: 1.4;
}

.course-info p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 16px;
}

.course-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--color-text-light);
}

.course-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.courses-cta {
    text-align: center;
    padding: 32px;
    background: var(--color-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.courses-cta p {
    font-size: 16px;
    color: var(--color-text-light);
    margin-bottom: 16px;
}

/* === 合作案例 === */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.case-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.case-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.case-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    line-height: 1.5;
}

.case-card p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.case-tags span {
    font-size: 12px;
    padding: 4px 10px;
    background: var(--color-bg-alt);
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
}

/* === 联系我们 === */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.contact-qrcode-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.contact-qrcode-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.qr-placeholder {
    width: 140px;
    height: 140px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    border: 2px dashed var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 600;
    text-align: center;
}

.qr-placeholder.small {
    width: 110px;
    height: 110px;
    font-size: 12px;
}

.contact-qrcode-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.contact-qrcode-card p {
    font-size: 13px;
    color: var(--color-text-light);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.info-block {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.info-block h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.info-block p {
    font-size: 13px;
    color: var(--color-text-light);
    margin-bottom: 8px;
    line-height: 1.6;
}

.info-value {
    font-size: 14px !important;
    color: var(--color-text) !important;
    font-weight: 600;
}

/* === 页脚 === */
.footer {
    background: var(--color-text);
    color: #E8DFD0;
    padding: 64px 0 32px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 48px;
    margin-bottom: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(232, 223, 208, 0.2);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-brand .logo-icon {
    font-size: 36px;
}

.footer-brand .logo-text {
    font-size: 24px;
    color: var(--color-accent);
    font-weight: 700;
}

.footer-slogan {
    color: var(--color-accent);
    font-size: 16px;
    margin-top: 8px;
    letter-spacing: 2px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-col h5 {
    color: var(--color-accent);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    color: #C8B8A0;
    font-size: 14px;
    margin-bottom: 8px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: white;
    padding-left: 4px;
}

.footer-bottom {
    text-align: center;
    font-size: 13px;
    color: #A89888;
}

.footer-bottom p {
    margin-bottom: 4px;
}

.footer-icp {
    font-size: 12px !important;
}

/* === 悬浮二维码 === */
.float-qrcode {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
}

.float-btn {
    background: var(--color-primary);
    color: white;
    padding: 12px 20px;
    border-radius: var(--radius-lg);
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(217, 136, 80, 0.4);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.float-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.float-icon {
    font-size: 18px;
}

.float-popup {
    position: absolute;
    bottom: 64px;
    right: 0;
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-lg);
    width: 280px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

.float-popup.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.popup-title {
    text-align: center;
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
}

.popup-qrcodes {
    display: flex;
    justify-content: space-around;
    gap: 12px;
}

.popup-qr {
    text-align: center;
}

.popup-qr p {
    font-size: 12px;
    color: var(--color-text-light);
    margin-top: 8px;
}

/* === 滚动动画 === */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* === 响应式 === */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-top {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: 16px 24px;
        gap: 0;
        box-shadow: var(--shadow-md);
        transform: translateY(-120%);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .nav-link {
        padding: 12px 16px;
        width: 100%;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
    
    .float-text {
        display: none;
    }
    
    .float-btn {
        padding: 14px;
        border-radius: 50%;
    }
    
    .float-popup {
        width: 240px;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}