/* ========================================
   拾伍岁月精酿啤酒 - 主样式文件
   设计风格：深色高端工业风，金色品质感
   ======================================== */

/* 字体引入 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* CSS变量 */
:root {
    --color-bg-dark: #0a0a0a;
    --color-bg-darker: #050505;
    --color-bg-card: #141414;
    --color-bg-card-hover: #1a1a1a;
    --color-gold-primary: #d4a543;
    --color-gold-light: #f5c962;
    --color-gold-dark: #b8892f;
    --color-amber: #e67e22;
    --color-text-primary: #f5f5f5;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #666666;
    --color-border: #2a2a2a;
    --color-border-gold: rgba(212, 165, 67, 0.3);
    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Noto Sans SC', sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-gold: 0 8px 32px rgba(212, 165, 67, 0.15);
    --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-dark);
    color: var(--color-text-primary);
    line-height: 1.8;
    overflow-x: hidden;
}

/* 噪点纹理背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' 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;
    z-index: 9999;
    opacity: 0.5;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gold-dark);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gold-primary);
}

/* 通用容器 */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 通用区块 */
.section {
    padding: 120px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-subtitle {
    font-family: var(--font-serif);
    color: var(--color-gold-primary);
    font-size: 14px;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 16px;
    display: block;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-gold-primary), transparent);
}

.section-desc {
    color: var(--color-text-secondary);
    font-size: 16px;
    max-width: 600px;
    margin: 24px auto 0;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 40px;
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 500;
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    border: none;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold-primary), var(--color-gold-light));
    color: var(--color-bg-dark);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(212, 165, 67, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-gold-primary);
    border: 1px solid var(--color-gold-primary);
}

.btn-secondary:hover {
    background: var(--color-gold-primary);
    color: var(--color-bg-dark);
}

.btn-lg {
    padding: 20px 56px;
    font-size: 16px;
}

/* 导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition-smooth);
    padding: 24px 0;
}

.header.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 900;
    color: var(--color-text-primary);
    text-decoration: none;
    letter-spacing: 2px;
}

.logo span {
    color: var(--color-gold-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
    list-style: none;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 400;
    transition: var(--transition-smooth);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-gold-primary);
    transition: var(--transition-smooth);
}

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

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

.header-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-gold-primary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
}

.header-phone::before {
    content: '📞';
    font-size: 16px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-gold-primary);
    transition: var(--transition-smooth);
}

/* Hero区域 */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/images/hero-banner.jpg?v=2');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 10, 10, 0.9) 0%, rgba(10, 10, 10, 0.7) 50%, rgba(10, 10, 10, 0.85) 100%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 300px;
    background: linear-gradient(to top, var(--color-bg-dark), transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 24px;
    animation: fadeInUp 1.2s ease-out;
}

.hero-badge {
    display: inline-block;
    padding: 8px 24px;
    border: 1px solid var(--color-border-gold);
    border-radius: 50px;
    color: var(--color-gold-primary);
    font-size: 13px;
    letter-spacing: 3px;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
    background: rgba(212, 165, 67, 0.05);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 72px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: 4px;
}

.hero-title span {
    color: var(--color-gold-primary);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-text-secondary);
    margin-bottom: 48px;
    font-weight: 300;
    letter-spacing: 1px;
}

.hero-ctas {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    font-size: 12px;
    letter-spacing: 2px;
    animation: bounce 2s infinite;
}

.hero-scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-gold-primary);
    border-bottom: 2px solid var(--color-gold-primary);
    transform: rotate(45deg);
}

/* 产品展示区 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-smooth);
    cursor: pointer;
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-gold-primary);
    box-shadow: var(--shadow-gold);
}

.product-image {
    width: 100%;
    height: 320px;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-info {
    padding: 24px;
}

.product-style {
    color: var(--color-gold-primary);
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.product-name {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.product-desc {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.product-abv {
    display: inline-block;
    margin-top: 16px;
    padding: 4px 12px;
    background: rgba(212, 165, 67, 0.1);
    border-radius: 4px;
    color: var(--color-gold-primary);
    font-size: 12px;
}

/* 客户案例与信任背书 */
.trust-section {
    background: var(--color-bg-darker);
}

.clients-wall {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
    margin-bottom: 80px;
    background: var(--color-border);
}

.client-logo {
    background: var(--color-bg-card);
    padding: 40px 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: grayscale(100%);
    opacity: 0.5;
    transition: var(--transition-smooth);
}

.client-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
    background: var(--color-bg-card-hover);
}

.client-logo-text {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-secondary);
    transition: var(--transition-smooth);
}

.client-logo:hover .client-logo-text {
    color: var(--color-gold-primary);
}

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

.testimonial-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 40px 32px;
    transition: var(--transition-smooth);
}

.testimonial-card:hover {
    border-color: var(--color-border-gold);
    transform: translateY(-4px);
}

.testimonial-quote {
    font-size: 48px;
    color: var(--color-gold-primary);
    opacity: 0.3;
    font-family: var(--font-serif);
    line-height: 1;
    margin-bottom: 16px;
}

.testimonial-text {
    color: var(--color-text-secondary);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-dark);
    font-weight: 700;
    font-size: 18px;
}

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

.testimonial-region {
    color: var(--color-text-muted);
    font-size: 13px;
}

/* 合作优势 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-card {
    text-align: center;
    padding: 48px 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-gold-dark), var(--color-gold-primary));
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

.advantage-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-gold-primary);
    box-shadow: var(--shadow-gold);
}

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

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, rgba(212, 165, 67, 0.1), rgba(212, 165, 67, 0.05));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    transition: var(--transition-smooth);
}

.advantage-card:hover .advantage-icon {
    background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold-primary));
    transform: scale(1.1);
}

.advantage-title {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text-primary);
}

.advantage-desc {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

/* 青岛产地优势 */
.origin-section {
    position: relative;
    overflow: hidden;
}

.origin-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-image: url('/images/laoshan-water.jpg?v=2');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
}

.origin-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.origin-image {
    position: relative;
}

.origin-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow-dark);
}

.origin-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid var(--color-gold-primary);
    border-radius: 8px;
    z-index: -1;
    opacity: 0.5;
}

.origin-features {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.origin-feature {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.origin-feature-icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold-primary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.origin-feature-title {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text-primary);
}

.origin-feature-desc {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

/* 关于我们简介 */
.about-preview {
    background: var(--color-bg-darker);
}

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

.about-preview-text .section-header {
    text-align: left;
    margin-bottom: 32px;
}

.about-preview-text .section-title::after {
    left: 0;
    transform: none;
}

.about-preview-text p {
    color: var(--color-text-secondary);
    font-size: 16px;
    line-height: 2;
    margin-bottom: 24px;
}

.about-preview-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow-dark);
}

/* FAQ区域 */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-item:hover {
    border-color: var(--color-border-gold);
}

.faq-item.active {
    border-color: var(--color-gold-primary);
}

.faq-question {
    width: 100%;
    padding: 24px 32px;
    background: var(--color-bg-card);
    border: none;
    color: var(--color-text-primary);
    font-size: 16px;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    font-family: var(--font-sans);
    transition: var(--transition-smooth);
}

.faq-question:hover {
    background: var(--color-bg-card-hover);
}

.faq-item.active .faq-question {
    color: var(--color-gold-primary);
    background: var(--color-bg-card-hover);
}

.faq-icon {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background: var(--color-gold-primary);
    transition: var(--transition-smooth);
}

.faq-icon::before {
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    transform: translateY(-50%);
}

.faq-icon::after {
    left: 50%;
    top: 0;
    width: 2px;
    height: 100%;
    transform: translateX(-50%);
}

.faq-item.active .faq-icon::after {
    transform: translateX(-50%) rotate(90deg);
    opacity: 0;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
    background: var(--color-bg-card-hover);
}

.faq-answer-inner {
    padding: 0 32px 24px;
    color: var(--color-text-secondary);
    font-size: 15px;
    line-height: 1.8;
}

/* 新闻动态 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.news-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-smooth);
    text-decoration: none;
    color: inherit;
    display: block;
}

.news-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-gold-primary);
    box-shadow: var(--shadow-gold);
}

.news-date {
    padding: 24px 24px 0;
    color: var(--color-gold-primary);
    font-size: 13px;
    letter-spacing: 1px;
}

.news-title {
    padding: 12px 24px;
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.6;
    color: var(--color-text-primary);
}

.news-excerpt {
    padding: 0 24px 24px;
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

.news-more {
    text-align: center;
    margin-top: 48px;
}

/* 联系转化区 */
.contact-section {
    background: linear-gradient(135deg, var(--color-bg-darker) 0%, var(--color-bg-card) 100%);
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(212, 165, 67, 0.05) 0%, transparent 50%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    position: relative;
    z-index: 2;
}

.contact-info h3 {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 24px;
}

.contact-info p {
    color: var(--color-text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-method-icon {
    width: 56px;
    height: 56px;
    background: rgba(212, 165, 67, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.contact-method-label {
    color: var(--color-text-muted);
    font-size: 13px;
    margin-bottom: 4px;
}

.contact-method-value {
    color: var(--color-text-primary);
    font-size: 18px;
    font-weight: 500;
}

.contact-form {
    background: var(--color-bg-dark);
    padding: 48px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: 24px;
}

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 14px 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-text-primary);
    font-size: 15px;
    font-family: var(--font-sans);
    transition: var(--transition-smooth);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-gold-primary);
    box-shadow: 0 0 0 3px rgba(212, 165, 67, 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-submit {
    width: 100%;
    margin-top: 8px;
}

/* 页脚 */
.footer {
    background: var(--color-bg-darker);
    padding: 80px 0 32px;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.8;
    margin-top: 20px;
    max-width: 320px;
}

.footer-title {
    font-family: var(--font-serif);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 24px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition-smooth);
}

.footer-link:hover {
    color: var(--color-gold-primary);
    padding-left: 4px;
}

.footer-contact p {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 2;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 13px;
}

.footer-beian {
    color: var(--color-text-muted);
    font-size: 13px;
}

/* 悬浮咨询按钮 */
.floating-contact {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    text-decoration: none;
    box-shadow: var(--shadow-dark);
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
}

.floating-btn:hover {
    transform: scale(1.1);
}

.floating-phone {
    background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold-primary));
}

.floating-wechat {
    background: #07c160;
    position: relative;
}

.wechat-qrcode {
    position: absolute;
    right: 70px;
    bottom: 0;
    background: white;
    padding: 12px;
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-dark);
}

.floating-wechat:hover .wechat-qrcode {
    opacity: 1;
    visibility: visible;
}

.wechat-qrcode img {
    width: 120px;
    height: 120px;
    display: block;
}

.wechat-qrcode p {
    color: #333;
    font-size: 12px;
    text-align: center;
    margin-top: 8px;
}

/* 页面Banner */
.page-banner {
    height: 400px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 0;
}

.page-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/images/hero-banner.jpg?v=2');
    background-size: cover;
    background-position: center;
}

.page-banner-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 10, 0.85);
}

.page-banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.page-banner-title {
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-banner-title span {
    color: var(--color-gold-primary);
}

.page-banner-breadcrumb {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.page-banner-breadcrumb a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.page-banner-breadcrumb a:hover {
    color: var(--color-gold-primary);
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    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);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .products-grid,
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .clients-wall {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .testimonials-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .origin-content,
    .about-preview-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .nav-menu,
    .header-phone {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-ctas {
        flex-direction: column;
        align-items: center;
    }
    
    .products-grid,
    .advantages-grid,
    .testimonials-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .clients-wall {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 32px 24px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .page-banner-title {
        font-size: 32px;
    }
}

/* ===== monochrome SVG icons (replaced emoji) ===== */
.advantage-icon,
.origin-feature-icon,
.contact-method-icon { color: var(--color-gold-primary); }

.advantage-icon svg,
.origin-feature-icon svg,
.contact-method-icon svg {
    width: 40px;
    height: 40px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: var(--transition-smooth);
}

.origin-feature-icon svg,
.contact-method-icon svg { width: 28px; height: 28px; }

/* on gold hover backgrounds the glyph flips to near-black for contrast */
.advantage-card:hover .advantage-icon { color: #1b1408; }
.advantage-card:hover .advantage-icon svg { transform: scale(1.06); }

/* ===== monochrome SVG icons v2 (replaced colour emoji) ===== */
.ico {
    width: 1em;
    height: 1em;
    display: inline-block;
    vertical-align: -0.125em;
    flex-shrink: 0;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* brand gold on the decorative icon tiles */
.advantage-icon,
.origin-feature-icon,
.contact-method-icon,
.honor-icon,
.ingredient-icon,
.food-icon-emoji,
.support-icon,
.contact-card-icon { color: var(--color-gold-primary); }

.advantage-icon .ico { width: 40px; height: 40px; }
.origin-feature-icon .ico,
.contact-method-icon .ico { width: 28px; height: 28px; }
.honor-icon .ico,
.ingredient-icon .ico,
.food-icon-emoji .ico,
.support-icon .ico,
.contact-card-icon .ico { width: 26px; height: 26px; }
.floating-btn .ico { width: 24px; height: 24px; }

/* flip to near-black when the tile turns gold on hover */
.advantage-card:hover .advantage-icon { color: #1b1408; }

/* ===== monochrome SVG icons v3 - size/colour normalisation ===== */
.ico {
    width: 1em;
    height: 1em;
    display: inline-block;
    vertical-align: -0.125em;
    flex-shrink: 0;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* decorative tiles -> brand gold */
.advantage-icon,
.origin-feature-icon,
.contact-method-icon,
.honor-icon,
.ingredient-icon,
.food-icon-emoji,
.support-icon,
.contact-card-icon { color: var(--color-gold-primary); }

.advantage-icon .ico { width: 40px; height: 40px; }
.origin-feature-icon .ico,
.contact-method-icon .ico { width: 28px; height: 28px; }
.honor-icon .ico,
.ingredient-icon .ico,
.food-icon-emoji .ico,
.support-icon .ico,
.contact-card-icon .ico { width: 26px; height: 26px; }
.floating-btn .ico { width: 24px; height: 24px; }
.wechat-qrcode-placeholder .ico { width: 28px; height: 28px; color: var(--color-gold-primary); }

.advantage-card:hover .advantage-icon { color: #1b1408; }