/* ========== 全局样式 ========== */
:root {
    --primary: #e8833a;
    --primary-dark: #c57030;
    --secondary: #3a6b8c;
    --accent: #f4a261;
    --dark: #2c3e50;
    --text: #4a4a4a;
    --text-light: #7f8c8d;
    --bg-light: #faf9f7;
    --bg-cream: #fef9f3;
    --white: #ffffff;
    --border: #e8e3dc;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 40px rgba(0,0,0,0.12);
    --radius: 16px;
    --transition: all 0.3s ease;
}

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

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

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

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

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    padding: 16px 0;
}

.navbar.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    padding: 10px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    transition: var(--transition);
}

.navbar.scrolled .logo {
    color: var(--dark);
}

.logo-icon {
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: rgba(255,255,255,0.85);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.navbar.scrolled .nav-link {
    color: var(--text);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 26px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

.navbar.scrolled .hamburger span {
    background: var(--dark);
}

/* ========== 英雄区 ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #2c3e50 0%, #3a6b8c 30%, #e8833a 70%, #f4a261 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(255,255,255,0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(0,0,0,0.15) 0%, transparent 60%);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='https://www.w3.org/2000/svg'%3E%3Cdefs%3E%3Cpattern id='paw' x='0' y='0' width='60' height='60' patternUnits='userSpaceOnUse'%3E%3Cpath d='M15 20 Q20 10 25 20 Q30 10 35 20 Q40 10 45 20 Q42 25 30 30 Q18 25 15 20Z' fill='rgba(255,255,255,0.03)'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='100%25' height='100%25' fill='url(%23paw)'/%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    color: var(--white);
    max-width: 750px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 16px;
    opacity: 0.9;
    font-weight: 300;
    letter-spacing: 2px;
    animation: fadeInUp 0.8s ease 0.15s both;
}

.hero-desc {
    font-size: 1.05rem;
    margin-bottom: 40px;
    opacity: 0.75;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.45s both;
}

.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(232,131,58,0.4);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.6);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid rgba(255,255,255,0.6);
    border-bottom: 2px solid rgba(255,255,255,0.6);
    transform: rotate(45deg);
}

/* ========== 通用区块样式 ========== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
}

section {
    padding: 100px 0;
}

/* ========== 产品系列 ========== */
.products {
    background: var(--bg-cream);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.product-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.product-emoji {
    font-size: 4rem;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15));
}

.product-info {
    padding: 28px;
}

.product-tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(232,131,58,0.1);
    color: var(--primary);
    margin-bottom: 12px;
}

.product-card:nth-child(2) .product-tag {
    background: rgba(58,107,140,0.1);
    color: var(--secondary);
}

.product-card:nth-child(3) .product-tag {
    background: rgba(39,174,96,0.1);
    color: #27ae60;
}

.product-card:nth-child(4) .product-tag {
    background: rgba(241,196,15,0.15);
    color: #c9a80c;
}

.product-info h3 {
    font-size: 1.25rem;
    color: var(--dark);
    margin-bottom: 10px;
}

.product-info p {
    color: var(--text-light);
    font-size: 0.93rem;
    margin-bottom: 16px;
    line-height: 1.6;
}

.product-features {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.product-features span {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.78rem;
    background: var(--bg-light);
    color: var(--text-light);
    border: 1px solid var(--border);
}

/* ========== 品牌故事 ========== */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text {
    color: var(--text-light);
    font-size: 1.02rem;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 36px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 6px;
}

.about-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-img-placeholder {
    width: 100%;
    aspect-ratio: 1;
    max-width: 420px;
    border-radius: 24px;
    background: linear-gradient(135deg, #ffe0c8 0%, #ffc89e 25%, #c8dce8 50%, #a8c8d8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-hover);
}

.about-emoji {
    font-size: 8rem;
    filter: drop-shadow(0 8px 20px rgba(0,0,0,0.15));
}

/* ========== 品牌理念 ========== */
.values {
    background: var(--bg-cream);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.value-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.value-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: 1.2rem;
    color: var(--dark);
    margin-bottom: 12px;
}

.value-card p {
    color: var(--text-light);
    font-size: 0.93rem;
    line-height: 1.7;
}

/* ========== 联系我们 ========== */
.contact {
    background: var(--white);
}

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

.contact-info h3 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--text-light);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
    font-size: 0.95rem;
}

.contact-icon {
    font-size: 1.3rem;
}

.contact-form-wrapper {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--white);
    color: var(--text);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(232,131,58,0.1);
}

/* ========== 页脚 ========== */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.8);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    color: var(--white);
    font-size: 1.3rem;
    margin: 12px 0 8px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    opacity: 0.7;
}

.footer h4 {
    color: var(--white);
    font-size: 1.05rem;
    margin-bottom: 20px;
}

.footer-links ul,
.footer-products ul {
    list-style: none;
}

.footer-links li,
.footer-products li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-products li {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

.footer-newsletter p {
    font-size: 0.9rem;
    margin-bottom: 16px;
    opacity: 0.7;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.newsletter-form input {
    padding: 12px 16px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    background: rgba(255,255,255,0.1);
    color: var(--white);
    font-size: 0.9rem;
    font-family: inherit;
}

.newsletter-form input::placeholder {
    color: rgba(255,255,255,0.4);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 24px 0;
    text-align: center;
    font-size: 0.88rem;
    opacity: 0.6;
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ========== 响应式设计 ========== */
@media (max-width: 968px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        order: -1;
    }

    .about-img-placeholder {
        max-width: 280px;
        aspect-ratio: 1;
    }

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

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

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-desc {
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    section {
        padding: 60px 0;
    }

    .about-stats {
        gap: 24px;
    }

    .stat-number {
        font-size: 1.6rem;
    }

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

    /* 移动端导航 */
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        inset: 0;
        background: rgba(44,62,80,0.98);
        flex-direction: column;
        justify-content: center;
        gap: 32px;
        clip-path: circle(0% at calc(100% - 36px) 36px);
        transition: clip-path 0.6s ease;
    }

    .nav-menu.active {
        clip-path: circle(150% at calc(100% - 36px) 36px);
    }

    .nav-menu .nav-link {
        font-size: 1.3rem;
        color: var(--white);
    }

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

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

@media (max-width: 480px) {
    .values-grid {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}