/* ========== 基础重置与变量 ========== */
:root {
    --primary: #48a15a;
    --primary-light: #6dc47e;
    --primary-dark: #3a8a4a;
    --primary-soft: #e8f5ec;
    --accent: #ffd966;
    --accent-light: #fff8d6;
    --bg: #fefefe;
    --bg-card: #ffffff;
    --bg-warm: #fffdf5;
    --bg-green: #f4faf5;
    --text: #3a3d50;
    --text-light: #7a7e94;
    --text-lighter: #b0b4c4;
    --border: #ebeef5;
    --shadow: 0 2px 16px rgba(72, 161, 90, 0.08);
    --shadow-lg: 0 8px 32px rgba(72, 161, 90, 0.12);
    --radius: 16px;
    --radius-sm: 12px;
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

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

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

#app {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    position: relative;
    background: var(--bg);
    box-shadow: 0 0 40px rgba(0,0,0,0.04);
}

/* ========== 页面切换 ========== */
.page-container {
    padding-bottom: 80px;
    min-height: 100vh;
}

.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 14px 32px;
    border: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(45, 106, 58, 0.3);
}

.btn-primary:active {
    transform: scale(0.97);
    box-shadow: 0 2px 8px rgba(45, 106, 58, 0.3);
}

.btn-small {
    padding: 8px 20px;
    font-size: 13px;
    background: var(--primary);
    color: white;
}

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

/* ========== 首页 Hero ========== */
.hero {
    position: relative;
    padding: 40px 24px 32px;
    background: linear-gradient(180deg, #f0f7f0 0%, var(--bg) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

/* Hero背景装饰树 - 简化版 */
.hero-bg .tree {
    position: absolute;
    width: 0;
    height: 0;
    display: none; /* 改用SVG logo，这里隐藏 */
}

.hero-bg .tree::before {
    content: '';
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    background: var(--primary-light);
    border-radius: 50%;
    opacity: 0.4;
}

.tree-1 { left: 8%; bottom: 20px; }
.tree-2 { left: 25%; bottom: 15px; height: 50px; }
.tree-3 { right: 30%; bottom: 18px; }
.tree-4 { right: 12%; bottom: 22px; height: 35px; }
.tree-5 { right: 5%; bottom: 16px; height: 45px; }

.cloud {
    position: absolute;
    background: white;
    border-radius: 20px;
    opacity: 0.5;
}

.cloud-1 { width: 50px; height: 20px; top: 15%; left: 10%; }
.cloud-2 { width: 35px; height: 15px; top: 25%; right: 15%; }
.cloud-3 { width: 40px; height: 18px; top: 8%; right: 35%; }

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

.logo-area {
    margin-bottom: 20px;
}

.logo-svg {
    width: 200px;
    height: 120px;
    margin: 0 auto 12px;
    display: block;
    overflow: visible;
}

.tree-svg {
    animation: treeSway 4s ease-in-out infinite;
    transform-origin: bottom center;
}

.tree-svg:nth-child(2) { animation-delay: 0.5s; }
.tree-svg:nth-child(3) { animation-delay: 1s; }
.tree-svg:nth-child(4) { animation-delay: 1.5s; }
.tree-svg:nth-child(5) { animation-delay: 0.8s; }

@keyframes treeSway {
    0%, 100% { transform: translate(var(--tx, 0), var(--ty, 0)) rotate(0deg); }
    25% { transform: translate(var(--tx, 0), var(--ty, 0)) rotate(1.2deg); }
    75% { transform: translate(var(--tx, 0), var(--ty, 0)) rotate(-0.8deg); }
}

.brand-name {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 4px;
    margin-bottom: 4px;
}

.brand-en {
    font-size: 14px;
    color: var(--primary-light);
    letter-spacing: 3px;
    font-weight: 300;
}

.hero-slogan {
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 16px;
    font-weight: 400;
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--bg-green);
    color: var(--primary);
    border-radius: 20px;
    font-size: 12px;
    border: 1px solid rgba(45, 106, 58, 0.15);
}

.btn-hero {
    padding: 16px 40px;
    font-size: 16px;
}

/* ========== 通用区块 ========== */
.section {
    padding: 32px 20px;
}

.section-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.title-icon {
    font-size: 22px;
}

/* ========== 服务卡片 ========== */
.services-section {
    background: var(--bg);
}

.service-cards {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.service-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.service-card:active {
    transform: scale(0.98);
}

.service-card:hover {
    border-color: rgba(45, 106, 58, 0.2);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--bg-green);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.service-card h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}

.service-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 10px;
}

.card-arrow {
    font-size: 13px;
    color: var(--primary);
    font-weight: 500;
}

/* ========== 为什么选择我们 ========== */
.why-section {
    background: var(--bg-warm);
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.why-item {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 18px 14px;
    text-align: center;
    box-shadow: var(--shadow);
}

.why-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.why-item h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.why-item p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ========== CTA区 ========== */
.cta-section {
    background: var(--bg);
    padding-top: 16px;
}

.cta-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius);
    padding: 28px 24px;
    text-align: center;
    color: white;
    box-shadow: 0 8px 25px rgba(45, 106, 58, 0.25);
}

.cta-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.cta-card p {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 18px;
}

.cta-card .btn {
    background: white;
    color: var(--primary);
    font-weight: 600;
}

/* ========== 课程详情页 ========== */
.page-header {
    padding: 32px 20px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.page-header p {
    font-size: 14px;
    opacity: 0.85;
}

.course-detail {
    padding: 24px 20px;
    border-bottom: 8px solid var(--bg);
}

.course-detail:last-of-type {
    border-bottom: none;
}

.course-header {
    margin-bottom: 20px;
}

.course-badge {
    display: inline-block;
    background: var(--accent);
    color: var(--text);
    padding: 3px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 10px;
}

.course-header h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}

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

.course-content {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.course-feature-list {
    margin-bottom: 20px;
}

.feature-item {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.feature-item:last-child {
    border-bottom: none;
}

.feature-check {
    width: 22px;
    height: 22px;
    background: var(--bg-green);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
    margin-top: 2px;
    font-weight: 700;
}

.feature-item strong {
    font-size: 15px;
    color: var(--text);
    display: block;
    margin-bottom: 3px;
}

.feature-item p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

.course-suitable {
    background: var(--bg-warm);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 20px;
}

.course-suitable h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
}

.course-suitable p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.7;
}

.course-price h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 14px;
}

.price-cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.price-card {
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
}

.price-card.recommended {
    border-color: var(--primary);
    background: var(--bg-green);
}

.price-badge {
    position: absolute;
    top: -10px;
    right: 12px;
    background: var(--primary);
    color: white;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
}

.price-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.price-num {
    font-size: 13px;
    color: var(--text-light);
}

.price-num span {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.price-detail {
    font-size: 12px;
    color: var(--text-lighter);
    margin-top: 2px;
}

.price-card .btn-small {
    flex-shrink: 0;
    margin-left: 12px;
}

.course-cta {
    padding: 24px 20px 40px;
    text-align: center;
    background: var(--bg);
}

.course-cta p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 14px;
}

/* ========== 预约表单 ========== */
.booking-form-container {
    padding: 24px 20px;
}

.booking-form {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px 20px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 8px;
}

.required {
    color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    color: var(--text);
    background: var(--bg);
    transition: border-color 0.3s ease;
    -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-lighter);
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.age-selector,
.course-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.age-option,
.course-option {
    cursor: pointer;
}

.age-option input,
.course-option input {
    display: none;
}

.age-option span,
.course-option span {
    display: block;
    padding: 12px;
    text-align: center;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
    transition: all 0.2s ease;
}

.age-option input:checked + span,
.course-option input:checked + span {
    border-color: var(--primary);
    background: var(--bg-green);
    color: var(--primary);
    font-weight: 500;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    margin-top: 8px;
}

.form-tips {
    text-align: center;
    font-size: 12px;
    color: var(--text-lighter);
    margin-top: 12px;
}

/* 联系卡片 */
.contact-card {
    padding: 0 20px 24px;
}

.contact-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 14px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: all 0.2s ease;
}

.contact-item:active {
    background: var(--bg-green);
}

.contact-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.contact-item strong {
    font-size: 15px;
    display: block;
    margin-bottom: 2px;
}

.contact-item p {
    font-size: 12px;
    color: var(--text-light);
}

.contact-action {
    margin-left: auto;
    padding: 4px 14px;
    background: var(--primary);
    color: white;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

/* ========== 关于页 ========== */
.about-header {
    padding: 40px 20px 32px;
}

.about-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 16px;
    background: var(--bg-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid rgba(255,255,255,0.3);
}

.about-subtitle {
    font-size: 14px;
    opacity: 0.9;
    line-height: 1.8;
}

.about-content {
    padding: 0 20px 32px;
}

.about-section {
    margin-bottom: 28px;
}

.about-section h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

.about-section > p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 10px;
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.about-feature {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 16px 12px;
    text-align: center;
    box-shadow: var(--shadow);
}

.af-icon {
    font-size: 26px;
    margin-bottom: 8px;
}

.about-feature h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.about-feature p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.6;
}

/* 服务流程 */
.process-timeline {
    position: relative;
    padding-left: 36px;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-light), var(--primary));
    border-radius: 1px;
}

.process-step {
    position: relative;
    margin-bottom: 20px;
}

.process-step:last-child {
    margin-bottom: 0;
}

.step-num {
    position: absolute;
    left: -36px;
    top: 0;
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    border: 3px solid var(--bg);
}

.step-content h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 3px;
}

.step-content p {
    font-size: 13px;
    color: var(--text-light);
}

/* 家长反馈 */
.testimonials {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.testimonial {
    background: var(--bg-warm);
    border-radius: var(--radius-sm);
    padding: 16px;
    border-left: 3px solid var(--accent);
}

.testimonial-text {
    font-size: 14px;
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 10px;
    font-style: italic;
}

.testimonial-author {
    font-size: 12px;
    color: var(--text-light);
    text-align: right;
}

/* ========== 成功页 ========== */
.success-container {
    padding: 60px 24px;
    text-align: center;
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.success-icon {
    font-size: 64px;
    margin-bottom: 20px;
    animation: bounce 1s ease;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.success-container h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.success-container > p {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 24px;
}

.success-info {
    background: var(--bg-green);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    width: 100%;
}

.success-info p {
    font-size: 14px;
    color: var(--text);
    line-height: 1.8;
}

.success-tips {
    text-align: left;
    width: 100%;
    margin-bottom: 28px;
}

.success-tips h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 10px;
}

.success-tips ul {
    list-style: none;
    padding: 0;
}

.success-tips li {
    font-size: 13px;
    color: var(--text-light);
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.success-tips li::before {
    content: '•';
    position: absolute;
    left: 6px;
    color: var(--primary);
    font-weight: 700;
}

/* ========== 底部导航 ========== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-around;
    padding: 6px 0 calc(6px + var(--safe-bottom));
    border-top: 1px solid rgba(0,0,0,0.05);
    z-index: 100;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.03);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 4px 16px;
    text-decoration: none;
    color: var(--text-lighter);
    transition: color 0.2s ease;
}

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

.nav-icon {
    font-size: 22px;
    line-height: 1;
}

.nav-label {
    font-size: 11px;
    font-weight: 500;
}

/* ========== 悬浮按钮 ========== */
.float-btn {
    position: fixed;
    bottom: 84px;
    right: 16px;
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    box-shadow: 0 4px 15px rgba(45, 106, 58, 0.35);
    cursor: pointer;
    z-index: 90;
    transition: all 0.3s ease;
    animation: floatPulse 2s ease-in-out infinite;
}

.float-btn:active {
    transform: scale(0.92);
}

@keyframes floatPulse {
    0%, 100% { box-shadow: 0 4px 15px rgba(45, 106, 58, 0.35); }
    50% { box-shadow: 0 6px 20px rgba(45, 106, 58, 0.5); }
}

/* ========== 弹窗 ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 200;
    align-items: flex-end;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(2px);
}

.modal-content {
    position: relative;
    background: white;
    width: 100%;
    max-width: 480px;
    border-radius: var(--radius) var(--radius) 0 0;
    padding: 20px;
    animation: slideUp 0.3s ease;
    z-index: 1;
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-light);
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}

.contact-way {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.contact-way:active {
    background: var(--bg-green);
}

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

.cw-info {
    flex: 1;
}

.cw-info strong {
    font-size: 15px;
    display: block;
    margin-bottom: 2px;
}

.cw-value {
    font-size: 13px;
    color: var(--text-light);
    font-family: monospace;
}

.cw-action {
    padding: 4px 14px;
    background: var(--primary);
    color: white;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.modal-tips {
    text-align: center;
    font-size: 12px;
    color: var(--text-lighter);
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

/* ========== Toast ========== */
.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0,0,0,0.75);
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 14px;
    z-index: 300;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    white-space: nowrap;
}

.toast.show {
    opacity: 1;
}

/* ========== 响应式适配 PC端 ========== */

/* 平板横屏 - 服务卡片双列 */
@media (min-width: 640px) {
    .service-cards {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }

    .service-card:last-child {
        grid-column: 1 / -1;
    }
}

/* 电脑端 - 真正展开布局 */
@media (min-width: 900px) {
    #app {
        max-width: 1200px;
        box-shadow: 0 0 60px rgba(0,0,0,0.08);
    }

    /* Hero区域横向展开 */
    .hero {
        padding: 60px 60px 48px;
    }

    .hero-content {
        max-width: 700px;
        margin: 0 auto;
    }

    .logo-svg {
        width: 280px;
        height: 160px;
    }

    .brand-name {
        font-size: 40px;
    }

    .brand-en {
        font-size: 16px;
    }

    .hero-slogan {
        font-size: 18px;
    }

    .hero-tags {
        gap: 12px;
    }

    .tag {
        font-size: 14px;
        padding: 6px 18px;
    }

    .btn-hero {
        padding: 18px 48px;
        font-size: 17px;
    }

    /* 通用区块 */
    .section {
        padding: 48px 60px;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 28px;
    }

    /* 服务卡片 - 三列横铺 */
    .service-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .service-card:last-child {
        grid-column: auto;
    }

    .service-card {
        padding: 28px;
    }

    .service-icon {
        width: 64px;
        height: 64px;
        font-size: 28px;
    }

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

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

    /* 为什么选择我们 - 四列 */
    .why-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

    .why-item {
        padding: 24px 16px;
    }

    .why-icon {
        font-size: 32px;
    }

    .why-item h4 {
        font-size: 15px;
    }

    .why-item p {
        font-size: 13px;
    }

    /* CTA区域 */
    .cta-card {
        padding: 48px;
    }

    .cta-card h3 {
        font-size: 24px;
    }

    /* 课程详情页 */
    .page-header {
        padding: 56px 60px 44px;
    }

    .page-header h1 {
        font-size: 28px;
    }

    .course-detail {
        padding: 40px 60px;
    }

    .course-header h2 {
        font-size: 24px;
    }

    .course-content {
        padding: 32px;
    }

    .feature-item {
        padding: 14px 0;
    }

    .feature-item strong {
        font-size: 16px;
    }

    .feature-item p {
        font-size: 14px;
    }

    /* 价格卡片 - 三列 */
    .price-cards {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .price-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 20px;
    }

    .price-card .btn-small {
        margin-left: 0;
        width: 100%;
    }

    .course-cta {
        padding: 40px 60px 60px;
    }

    /* 预约表单 */
    .booking-form-container {
        padding: 40px 60px;
        max-width: 800px;
        margin: 0 auto;
    }

    .booking-form {
        padding: 40px;
    }

    .form-group label {
        font-size: 15px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 14px 18px;
        font-size: 16px;
    }

    .age-selector,
    .course-selector {
        grid-template-columns: repeat(4, 1fr);
    }

    .contact-card {
        padding: 0 60px 40px;
        max-width: 800px;
        margin: 0 auto;
    }

    /* 关于页 */
    .about-header {
        padding: 60px 60px 48px;
    }

    .about-avatar {
        width: 120px;
        height: 120px;
    }

    .about-content {
        padding: 0 60px 48px;
    }

    .about-section h3 {
        font-size: 18px;
    }

    .about-section > p {
        font-size: 15px;
    }

    .feature-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    .about-feature {
        padding: 20px 16px;
    }

    .af-icon {
        font-size: 30px;
    }

    .about-feature h4 {
        font-size: 15px;
    }

    .about-feature p {
        font-size: 13px;
    }

    /* 流程时间线 */
    .process-timeline {
        padding-left: 52px;
    }

    .step-num {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .step-content h4 {
        font-size: 16px;
    }

    .step-content p {
        font-size: 14px;
    }

    /* 家长反馈 */
    .testimonials {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .testimonial {
        padding: 20px;
    }

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

    /* 底部导航铺满 */
    .bottom-nav {
        max-width: 1200px;
        padding: 8px 0 calc(8px + var(--safe-bottom));
    }

    .nav-item {
        padding: 6px 40px;
    }

    .nav-icon {
        font-size: 24px;
    }

    .nav-label {
        font-size: 13px;
    }

    /* 悬浮按钮 */
    .float-btn {
        bottom: 90px;
        right: calc(50% - 560px);
        width: 56px;
        height: 56px;
        font-size: 26px;
    }

    /* 弹窗 */
    .modal-content {
        width: 440px;
        border-radius: var(--radius);
    }

    /* 成功页 */
    .success-container {
        padding: 80px 60px;
    }

    .success-container h2 {
        font-size: 28px;
    }

    .success-info {
        max-width: 600px;
    }
}

/* 超大屏 */
@media (min-width: 1400px) {
    #app {
        max-width: 1320px;
    }

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

    .hero-content {
        max-width: 800px;
    }

    .section {
        padding: 56px 80px;
    }

    .course-detail,
    .booking-form-container,
    .page-header,
    .about-header,
    .about-content,
    .contact-card {
        padding-left: 80px;
        padding-right: 80px;
    }

    .float-btn {
        right: calc(50% - 620px);
    }
}

/* 隐藏滚动条但保持滚动 */
::-webkit-scrollbar {
    width: 0;
    height: 0;
}