/* ===== 全局重置 & 基础 ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #6ee7b7;
    --secondary: #f59e0b;
    --accent: #8b5cf6;
    --dark: #0f172a;
    --dark2: #1e293b;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --light: #f8fafc;
    --white: #ffffff;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.12);
    --radius: 16px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font);
    color: var(--dark);
    background: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

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

.section-title .subtitle {
    display: inline-block;
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary-dark);
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.section-title h2 {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.section-title p {
    color: var(--gray);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.45);
}

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

.btn-outline:hover {
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ===== 导航 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 10px 0;
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
}

.logo i {
    font-size: 1.8rem;
    color: var(--primary-light);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-light);
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
    animation: heroFloat 20s ease-in-out infinite;
}

@keyframes heroFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(1deg); }
    66% { transform: translate(-20px, 20px) rotate(-1deg); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 40px 20px;
}

.hero-content h1 {
    font-size: 3.8rem;
    font-weight: 900;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-content .highlight {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

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

.stat-num {
    display: block;
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--white);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 1px;
}

/* ===== About ===== */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.about-card {
    background: var(--light);
    padding: 36px 28px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.about-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
    background: var(--white);
}

.about-card i {
    font-size: 2.6rem;
    color: var(--primary);
    margin-bottom: 18px;
    display: inline-block;
    background: rgba(16, 185, 129, 0.1);
    padding: 16px;
    border-radius: 20px;
}

.about-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark);
}

.about-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* ===== Services ===== */
.services {
    background: var(--light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px;
}

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

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.service-img {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-img i {
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.9);
}

.service-info {
    padding: 24px;
}

.service-info h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.service-info p {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.price {
    display: inline-block;
    background: rgba(16, 185, 129, 0.08);
    color: var(--primary-dark);
    padding: 4px 14px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
}

/* ===== Franchise ===== */
.franchise {
    background: var(--white);
}

.franchise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
    align-items: start;
}

.franchise-card {
    background: var(--light);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
}

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

.franchise-card.featured {
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
    transform: scale(1.03);
}

.franchise-card.featured:hover {
    transform: scale(1.03) translateY(-6px);
}

.franchise-header .badge {
    display: inline-block;
    background: var(--gray-light);
    color: var(--gray);
    padding: 4px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.franchise-header .badge.hot {
    background: rgba(245, 158, 11, 0.15);
    color: var(--secondary);
}

.franchise-header h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.price-box {
    margin-bottom: 24px;
}

.price-box .amount {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--dark);
}

.price-box .amount small {
    font-size: 1.2rem;
    font-weight: 600;
}

.price-box .period {
    display: block;
    color: var(--gray);
    font-size: 0.9rem;
}

.franchise-features {
    text-align: left;
    margin-bottom: 28px;
}

.franchise-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--gray);
    font-size: 0.95rem;
}

.franchise-features li i {
    color: var(--primary);
    font-size: 1.1rem;
}

.franchise-note {
    text-align: center;
    margin-top: 40px;
    padding: 16px 24px;
    background: rgba(16, 185, 129, 0.06);
    border-radius: var(--radius);
    color: var(--gray);
    font-size: 0.95rem;
}

.franchise-note i {
    color: var(--primary);
    margin-right: 8px;
}

/* ===== Testimonials ===== */
.testimonials {
    background: var(--light);
}

.testimonial-slider {
    max-width: 720px;
    margin: 0 auto;
    overflow: hidden;
}

.testimonial-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-card {
    min-width: 100%;
    padding: 0 20px;
    text-align: center;
}

.testimonial-card .quote {
    font-size: 2rem;
    color: var(--primary);
    opacity: 0.3;
    margin-bottom: 16px;
}

.testimonial-card p {
    font-size: 1.15rem;
    color: var(--dark);
    line-height: 1.8;
    max-width: 580px;
    margin: 0 auto 30px;
    font-weight: 400;
}

.author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

.author img {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
}

.author strong {
    display: block;
    font-size: 1rem;
    color: var(--dark);
}

.author span {
    font-size: 0.85rem;
    color: var(--gray);
}

.slider-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 36px;
}

.slider-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--gray-light);
    background: var(--white);
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.slider-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-light);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--primary);
    width: 28px;
    border-radius: 10px;
}

/* ===== Contact ===== */
.contact {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    padding: 100px 0;
}

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

.contact-info .subtitle.light {
    background: rgba(255, 255, 255, 0.08);
    color: var(--primary-light);
}

.contact-info h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 12px;
}

.contact-info > p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 36px;
}

.info-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.info-item i {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
    font-size: 1.1rem;
}

.info-item strong {
    display: block;
    color: var(--white);
    font-weight: 600;
    font-size: 0.95rem;
}

.info-item span {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

.contact-form {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px 36px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--dark);
}

.form-group {
    margin-bottom: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--gray-light);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: var(--font);
    transition: var(--transition);
    background: var(--light);
    color: var(--dark);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-tip {
    text-align: center;
    color: var(--gray);
    font-size: 0.85rem;
    margin-top: 12px;
}

/* ===== Footer ===== */
.footer {
    background: var(--dark);
    padding: 60px 0 0;
    color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 16px;
    display: inline-flex;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-links ul li {
    margin-bottom: 8px;
}

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

.footer-links ul li a:hover {
    color: var(--primary-light);
    padding-left: 4px;
}

.footer-contact p {
    font-size: 0.9rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact p i {
    color: var(--primary-light);
    width: 20px;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.85rem;
}

.footer-bottom a {
    color: var(--primary-light);
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.35);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .section {
        padding: 70px 0;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .hero-content h1 {
        font-size: 2.4rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .hero-stats {
        gap: 30px;
    }

    .stat-num {
        font-size: 2rem;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 320px;
        height: 100vh;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 24px;
        transition: var(--transition);
        padding: 40px;
    }

    .nav-links.open {
        right: 0;
    }

    .hamburger {
        display: flex;
    }

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

    .franchise-card.featured {
        transform: none;
    }

    .franchise-card.featured:hover {
        transform: translateY(-6px);
    }

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

    .footer-brand p {
        max-width: 100%;
    }

    .footer-contact p {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-btns {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

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

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

    .contact-form {
        padding: 28px 20px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
        font-size: 1rem;
    }
}