/* ============================================
   锦瑟·品牌服装加盟网站 - 样式表
   ============================================ */

/* ----- CSS 变量 / 主题色 ----- */
:root {
    --primary: #b8860b;
    --primary-dark: #a0760a;
    --primary-light: #d4a843;
    --dark: #1a1a2e;
    --darker: #0f0f1a;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-600: #6c757d;
    --gray-800: #343a40;
    --light-bg: #fdf8f0;
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ----- 基础重置 ----- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    color: var(--dark);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.section {
    padding: 100px 0;
}
.section.bg-light { background: var(--light-bg); }
.section.bg-dark {
    background: var(--darker);
    color: var(--white);
}
.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-header h2 {
    font-family: var(--font-serif);
    font-size: 2.4rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--dark);
    position: relative;
    display: inline-block;
}
.section-header.light h2 { color: var(--white); }
.section-header h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--primary);
    margin: 14px auto 0;
    border-radius: 4px;
}
.section-desc {
    color: var(--gray-600);
    margin-top: 14px;
    font-size: 1.05rem;
}
.section-header.light .section-desc { color: rgba(255,255,255,0.7); }

/* ----- 按钮 ----- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 60px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.5px;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 16px rgba(184,134,11,0.35);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(184,134,11,0.45);
}
.btn-lg { padding: 16px 40px; font-size: 1.1rem; }
.btn-block { width: 100%; }

/* ----- 导航栏 ----- */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 16px 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    padding: 10px 0;
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 1px;
    transition: var(--transition);
}
.logo i { color: var(--primary-light); }
.navbar.scrolled .logo { color: var(--dark); }

.nav-links {
    display: flex;
    gap: 28px;
}
.nav-links a {
    color: rgba(255,255,255,0.85);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding-bottom: 4px;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: var(--primary-light);
    transition: var(--transition);
    border-radius: 4px;
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover { color: var(--white); }
.navbar.scrolled .nav-links a { color: var(--gray-800); }
.navbar.scrolled .nav-links a:hover { color: var(--primary); }

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--white);
    border-radius: 4px;
    transition: var(--transition);
}
.navbar.scrolled .hamburger span { background: var(--dark); }

/* ----- Hero ----- */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23b8860b" fill-opacity="0.05"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
    pointer-events: none;
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    padding: 60px 0;
}
.hero-title {
    font-family: var(--font-serif);
    font-size: 3.6rem;
    font-weight: 700;
    letter-spacing: 4px;
    margin-bottom: 16px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.75);
    margin-bottom: 40px;
    letter-spacing: 2px;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-number {
    display: block;
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--primary-light);
    font-family: var(--font-serif);
}
.stat-label {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    margin-top: 4px;
}

/* ----- 品牌故事 ----- */
.brand-content {
    display: flex;
    gap: 60px;
    align-items: center;
}
.brand-image {
    flex: 1;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: rotate(-2deg);
    transition: var(--transition);
}
.brand-image:hover { transform: rotate(0deg) scale(1.01); }
.brand-image img { width: 100%; height: 420px; object-fit: cover; }
.brand-text { flex: 1; }
.brand-text h3 {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: 16px;
    color: var(--primary-dark);
}
.brand-text p {
    color: var(--gray-600);
    margin-bottom: 16px;
    line-height: 1.8;
}
.brand-features {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 24px;
}
.bf-item {
    background: var(--light-bg);
    padding: 8px 18px;
    border-radius: 60px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--dark);
    border: 1px solid var(--gray-200);
}
.bf-item i { color: var(--primary); }

/* ----- 当季系列 (卡片) ----- */
.collection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 30px;
}
.collection-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: default;
}
.collection-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}
.collection-card img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: var(--transition);
}
.collection-card:hover img { transform: scale(1.03); }
.card-info {
    padding: 20px;
}
.card-info h4 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin-bottom: 6px;
    color: var(--dark);
}
.card-info .price {
    font-weight: 700;
    color: var(--primary-dark);
    font-size: 1.1rem;
}
.card-info .tag {
    display: inline-block;
    background: var(--light-bg);
    padding: 2px 12px;
    border-radius: 60px;
    font-size: 0.75rem;
    color: var(--gray-600);
    margin-top: 8px;
}

/* ----- 加盟优势 ----- */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}
.advantage-card {
    background: var(--white);
    padding: 36px 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
    border: 1px solid var(--gray-200);
}
.advantage-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}
.advantage-card i {
    font-size: 2.4rem;
    color: var(--primary);
    margin-bottom: 20px;
}
.advantage-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    font-weight: 600;
}
.advantage-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ----- 加盟流程 ----- */
.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}
.step {
    background: var(--white);
    padding: 30px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    flex: 1;
    min-width: 180px;
    max-width: 240px;
    transition: var(--transition);
}
.step:hover { transform: scale(1.03); box-shadow: var(--shadow-md); }
.step-number {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 10px;
}
.step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { color: var(--gray-600); font-size: 0.9rem; }
.step-arrow { font-size: 1.6rem; color: var(--primary-light); }

/* ----- 合伙人说 ----- */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}
.testimonial-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}
.testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.testimonial-card .quote {
    font-style: italic;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 20px;
    position: relative;
    padding-left: 20px;
    border-left: 3px solid var(--primary-light);
}
.testimonial-card .author {
    display: flex;
    align-items: center;
    gap: 14px;
}
.testimonial-card .author img {
    width: 48px; height: 48px;
    border-radius: 50%;
    object-fit: cover;
}
.testimonial-card .author strong { font-weight: 600; }
.testimonial-card .author span { font-size: 0.85rem; color: var(--gray-600); }

/* ----- 加盟咨询表单 & 联系信息 ----- */
.contact-form {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.form-row {
    display: flex;
    gap: 18px;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.08);
    color: var(--white);
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
    font-family: var(--font-sans);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255,255,255,0.5); }
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    border-color: var(--primary-light);
    background: rgba(255,255,255,0.15);
}
.contact-form select option { color: var(--dark); background: var(--white); }
.contact-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
    flex-wrap: wrap;
}
.ci-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
}
.ci-item i { color: var(--primary-light); font-size: 1.2rem; }

/* ----- 页脚 ----- */
.footer {
    background: var(--darker);
    color: rgba(255,255,255,0.6);
    padding: 30px 0;
    border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); }

/* ----- 回到顶部 ----- */
.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: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    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) {
    .hero-title { font-size: 2.8rem; }
    .brand-content { flex-direction: column; }
    .brand-image { transform: rotate(0); }
    .brand-image img { height: 300px; }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0; right: -100%;
        width: 70%;
        max-width: 320px;
        height: 100vh;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 32px;
        transition: var(--transition);
        box-shadow: -8px 0 30px rgba(0,0,0,0.1);
    }
    .nav-links.nav-open { right: 0; }
    .nav-links a { color: var(--dark) !important; font-size: 1.1rem; }
    .hamburger { display: flex; }

    .hero-title { font-size: 2.2rem; letter-spacing: 2px; }
    .hero-stats { gap: 30px; }
    .stat-number { font-size: 1.8rem; }

    .section { padding: 64px 0; }
    .section-header h2 { font-size: 1.8rem; }
    .section-header { margin-bottom: 40px; }

    .advantages-grid { grid-template-columns: 1fr; }
    .process-steps { flex-direction: column; }
    .step-arrow { transform: rotate(90deg); }
    .step { max-width: 100%; }

    .form-row { flex-direction: column; }
    .contact-info { gap: 20px; flex-direction: column; align-items: center; }

    .footer-content { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-title { font-size: 1.8rem; }
    .hero-subtitle { font-size: 1rem; }
    .btn-lg { padding: 14px 28px; font-size: 1rem; }
    .collection-grid { grid-template-columns: 1fr; }
    .testimonial-grid { grid-template-columns: 1fr; }
}