/* ============================================
   安源包装官网 - 样式表
   中国红色调 · 简约大气
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
    --red-900: #8B0000;
    --red-800: #A01010;
    --red-700: #B71C1C;
    --red-600: #C62828;
    --red-500: #D32F2F;
    --red-400: #E53935;
    --red-300: #EF5350;
    --red-100: #FFCDD2;
    --red-50:  #FFF5F5;

    --gold-500: #C9A84C;
    --gold-400: #D4B96A;
    --gold-300: #E0CA8A;

    --gray-900: #1A1A1A;
    --gray-800: #2D2D2D;
    --gray-700: #404040;
    --gray-600: #555555;
    --gray-500: #777777;
    --gray-400: #999999;
    --gray-300: #CCCCCC;
    --gray-200: #E5E5E5;
    --gray-100: #F5F5F5;
    --gray-50:  #FAFAFA;
    --white:    #FFFFFF;

    --font-serif: 'Noto Serif SC', 'Songti SC', serif;
    --font-sans: 'Noto Sans SC', 'PingFang SC', -apple-system, sans-serif;

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 60px rgba(0,0,0,0.16);

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--red-600);
    color: var(--white);
    border-color: var(--red-600);
}
.btn-primary:hover {
    background: var(--red-700);
    border-color: var(--red-700);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(198,40,40,0.35);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.5);
}
.btn-outline:hover {
    background: var(--white);
    color: var(--red-600);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-full { width: 100%; }

/* ---------- Section Headers ---------- */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--red-500);
    margin-bottom: 12px;
    position: relative;
}
.section-tag::before, .section-tag::after {
    content: '';
    display: inline-block;
    width: 30px;
    height: 1px;
    background: var(--red-300);
    vertical-align: middle;
    margin: 0 12px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 40px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
    line-height: 1.3;
}
.section-header.light .section-title { color: var(--white); }

.section-desc {
    font-size: 16px;
    color: var(--gray-500);
    max-width: 560px;
    margin: 0 auto;
}
.section-header.light .section-desc { color: rgba(255,255,255,0.7); }

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition);
    background: transparent;
}
.navbar.scrolled {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 1px 20px rgba(0,0,0,0.06);
}
.navbar.scrolled .nav-links a { color: var(--gray-700); }
.navbar.scrolled .nav-links a:hover,
.navbar.scrolled .nav-links a.active { color: var(--red-600); }
.navbar.scrolled .nav-phone { color: var(--gray-600); }
.navbar.scrolled .logo-cn { color: var(--gray-900); }
.navbar.scrolled .logo-en { color: var(--gray-500); }
.navbar.scrolled .logo-icon { background: var(--red-600); color: var(--white); }
.navbar.scrolled .logo-img { filter: none; }
.navbar.scrolled .hamburger span { background: var(--gray-700); }

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo-icon {
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.15);
    border: 1.5px solid rgba(255,255,255,0.3);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 900;
    color: var(--white);
    transition: all var(--transition);
}
.logo-img {
    height: 40px;
    width: auto;
    border-radius: 6px;
    transition: all var(--transition);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-cn {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    transition: color var(--transition);
}
.logo-en {
    font-size: 10px;
    letter-spacing: 2px;
    color: rgba(255,255,255,0.6);
    transition: color var(--transition);
}

.nav-links {
    display: flex;
    gap: 40px;
}
.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    position: relative;
    padding: 4px 0;
    transition: color var(--transition);
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--red-500);
    transition: width 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%; }

.nav-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
    transition: color var(--transition);
}
.nav-phone i { color: var(--red-400); }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all var(--transition);
    border-radius: 2px;
}

.mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    padding: 20px 40px;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
}
.mobile-menu a:hover { color: var(--red-600); }

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

.hero-bg-wrapper {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(139, 0, 0, 0.75) 0%,
        rgba(183, 28, 28, 0.55) 40%,
        rgba(26, 26, 26, 0.65) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 40px;
    animation: heroFadeIn 1.2s ease-out;
}

@keyframes heroFadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-badge {
    display: inline-block;
    padding: 8px 24px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50px;
    font-size: 14px;
    letter-spacing: 4px;
    margin-bottom: 32px;
    color: rgba(255,255,255,0.9);
    backdrop-filter: blur(4px);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 64px;
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 24px;
}
.hero-title-line { display: block; }
.hero-title-accent {
    display: block;
    background: linear-gradient(135deg, var(--gold-400), var(--gold-300));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255,255,255,0.8);
    margin-bottom: 40px;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.5);
    font-size: 12px;
    letter-spacing: 2px;
    animation: scrollBounce 2s infinite;
}
@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}
.scroll-hint i { font-size: 14px; }

/* ============================================
   数据亮点
   ============================================ */
.stats-bar {
    background: var(--gray-900);
    padding: 50px 0;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}
.stat-item { color: var(--white); }
.stat-number {
    font-family: var(--font-serif);
    font-size: 52px;
    font-weight: 900;
    color: var(--red-400);
    line-height: 1;
}
.stat-suffix {
    font-size: 28px;
    font-weight: 700;
    color: var(--red-400);
}
.stat-label {
    display: block;
    font-size: 15px;
    color: var(--gray-400);
    margin-top: 8px;
    letter-spacing: 2px;
}

/* ============================================
   公司细节展示
   ============================================ */
.company-details {
    padding: 120px 0;
    background: var(--gray-50);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto auto;
    gap: 20px;
}
.detail-card-lg {
    grid-column: 1 / 3;
    grid-row: 1 / 2;
}

.detail-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

.detail-img {
    height: 100%;
    min-height: 260px;
    background-size: cover;
    background-position: center;
    background-color: var(--gray-200);
    transition: transform 0.6s ease;
    position: relative;
}
.detail-card-lg .detail-img { min-height: 380px; }

.detail-card:hover .detail-img { transform: scale(1.05); }

.detail-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(26,26,26,0.85) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 30px;
    color: var(--white);
    transition: background var(--transition);
}
.detail-card:hover .detail-overlay {
    background: linear-gradient(to top, rgba(139,0,0,0.85) 0%, rgba(183,28,28,0.3) 60%);
}

.detail-overlay h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 6px;
}
.detail-overlay p {
    font-size: 14px;
    color: rgba(255,255,255,0.75);
}

/* ============================================
   产品中心
   ============================================ */
.products {
    padding: 120px 0;
    background: var(--white);
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 50px;
}
.tab-btn {
    padding: 14px 48px;
    font-size: 16px;
    font-weight: 500;
    border: 2px solid var(--gray-200);
    background: var(--white);
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
}
.tab-btn:first-child { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.tab-btn:last-child { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.tab-btn.active {
    background: var(--red-600);
    border-color: var(--red-600);
    color: var(--white);
}
.tab-btn:not(.active):hover {
    border-color: var(--red-300);
    color: var(--red-600);
}

.product-panel { display: none; }
.product-panel.active { display: block; animation: fadeIn 0.4s ease; }

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

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.product-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border: 1px solid var(--gray-100);
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.product-img {
    height: 300px;
    background-size: cover;
    background-position: center 65%;
    background-color: var(--gray-100);
    position: relative;
    overflow: hidden;
}
.product-card:hover .product-img {
    background-color: var(--red-50);
}

.product-info {
    padding: 14px 20px 18px;
}
.product-info h3 {
    font-family: var(--font-serif);
    font-size: 17px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}
.product-info p {
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.5;
}

.product-tag {
    display: inline-block;
    margin-top: 6px;
    padding: 3px 12px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 50px;
    background: var(--red-50);
    color: var(--red-600);
}

.product-cta {
    text-align: center;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--gray-100);
}
.product-cta p {
    font-size: 18px;
    color: var(--gray-600);
    margin-bottom: 24px;
}

/* ============================================
   奖项荣誉
   ============================================ */
.honors {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--red-900) 100%);
    position: relative;
    overflow: hidden;
}
.honors::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(198,40,40,0.15) 0%, transparent 70%);
    pointer-events: none;
}

.honors-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}
.honors-timeline::before {
    content: '';
    position: absolute;
    left: 80px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--red-500), transparent);
}

.honor-item {
    display: flex;
    gap: 40px;
    margin-bottom: 48px;
    position: relative;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.6s ease;
}
.honor-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.honor-year {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 900;
    color: var(--red-400);
    min-width: 60px;
    text-align: right;
    padding-top: 6px;
}

.honor-content {
    flex: 1;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    padding: 28px;
    backdrop-filter: blur(8px);
    position: relative;
    transition: all var(--transition);
}
.honor-content:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(198,40,40,0.4);
    transform: translateX(8px);
}
.honor-content::before {
    content: '';
    position: absolute;
    left: -22px;
    top: 24px;
    width: 12px;
    height: 12px;
    background: var(--red-500);
    border-radius: 50%;
    border: 3px solid var(--gray-900);
}

.honor-icon {
    display: inline-flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--red-600), var(--red-400));
    border-radius: 10px;
    margin-bottom: 16px;
    color: var(--white);
    font-size: 18px;
}

.honor-content h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}
.honor-content p {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
}

/* ============================================
   关于安源
   ============================================ */
.about {
    padding: 120px 0;
    background: var(--white);
}

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

.about-visual {
    position: relative;
}
.about-img-main {
    height: 480px;
    border-radius: var(--radius-lg);
    background-size: cover;
    background-position: center;
    background-color: var(--gray-200);
    box-shadow: var(--shadow-xl);
}
.about-img-accent {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 220px;
    height: 220px;
    border-radius: var(--radius-md);
    background-size: cover;
    background-position: 95% center;
    background-color: var(--gray-200);
    border: 6px solid var(--white);
    box-shadow: var(--shadow-lg);
}
.about-exp {
    position: absolute;
    top: -20px;
    left: -20px;
    background: var(--red-600);
    color: var(--white);
    padding: 20px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: 0 8px 30px rgba(198,40,40,0.4);
}
.about-exp-num {
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 900;
    line-height: 1;
}
.about-exp-text {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
}

.about-content .section-tag { display: block; text-align: left; margin-bottom: 8px; }
.about-content .section-tag::before,
.about-content .section-tag::after { display: none; }
.section-title.left { text-align: left; }

.about-lead {
    font-size: 18px;
    font-weight: 500;
    color: var(--gray-800);
    margin-bottom: 20px;
    line-height: 1.8;
}
.about-text {
    font-size: 15px;
    color: var(--gray-600);
    margin-bottom: 36px;
    line-height: 1.9;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.about-feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}
.about-feature i {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--red-50);
    color: var(--red-600);
    border-radius: var(--radius-sm);
    font-size: 18px;
    flex-shrink: 0;
}
.about-feature h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}
.about-feature p {
    font-size: 14px;
    color: var(--gray-500);
}

/* ============================================
   联系我们
   ============================================ */
.contact {
    padding: 120px 0;
    background: var(--gray-50);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: flex-start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.contact-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 24px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}
.contact-card:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
}
.contact-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--red-50);
    color: var(--red-600);
    border-radius: var(--radius-sm);
    font-size: 20px;
    flex-shrink: 0;
}
.contact-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}
.contact-card p {
    font-size: 14px;
    color: var(--gray-500);
}

.contact-form-wrapper {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-size: 15px;
    font-family: var(--font-sans);
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    background: var(--gray-50);
    color: var(--gray-800);
    transition: all var(--transition);
    outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--red-400);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(198,40,40,0.08);
}
.form-group select {
    appearance: none;
    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 d='M6 8L1 3h10z' fill='%23999'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}
.form-group textarea { resize: vertical; min-height: 100px; }

/* ---------- 联系展示区（替换在线询价表单） ---------- */
.contact-showcase {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.contact-showcase-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--red-900) 0%, var(--red-700) 50%, var(--red-600) 100%);
    z-index: 0;
}
.contact-showcase-bg::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    pointer-events: none;
}
.contact-showcase-bg::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -15%;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    pointer-events: none;
}
.contact-showcase-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 60px 40px;
    color: var(--white);
}
.showcase-badge {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 4px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.15);
    padding: 6px 18px;
    border-radius: 50px;
}
.contact-showcase-content h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.4;
}
.showcase-text {
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 32px;
    line-height: 1.7;
}
.showcase-phone {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 16px 40px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 60px;
    backdrop-filter: blur(8px);
    margin-bottom: 16px;
    transition: all var(--transition);
    cursor: default;
}
.showcase-phone:hover {
    background: rgba(255,255,255,0.2);
    transform: scale(1.05);
}
.showcase-phone i {
    font-size: 22px;
    color: var(--gold-300);
}
.showcase-phone span {
    font-size: 28px;
    font-weight: 700;
    font-family: var(--font-serif);
    letter-spacing: 2px;
}
.showcase-hours {
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 80px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand p {
    margin-top: 20px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--gray-500);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.footer-logo .logo-icon {
    background: var(--red-600);
    border-color: var(--red-600);
}
.footer-logo .logo-img {
    height: 36px;
    opacity: 0.9;
}
.footer-logo .logo-cn { color: var(--white); }
.footer-logo .logo-en { color: var(--gray-500); }

.footer-links h4,
.footer-contact h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 24px;
}
.footer-links li { margin-bottom: 12px; }
.footer-links a {
    font-size: 14px;
    color: var(--gray-500);
    transition: color var(--transition);
}
.footer-links a:hover { color: var(--red-400); }

.footer-contact p {
    font-size: 14px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-contact i { color: var(--red-400); width: 16px; }

.footer-bottom {
    padding: 28px 0;
    text-align: center;
    font-size: 13px;
    color: var(--gray-600);
}
.footer-bottom a { color: var(--gray-500); }
.footer-bottom a:hover { color: var(--red-400); }

/* ============================================
   回到顶部
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--red-600);
    color: var(--white);
    border: none;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(198,40,40,0.35);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition);
    z-index: 999;
}
.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}
.back-to-top:hover {
    background: var(--red-700);
    transform: translateY(-3px);
}

/* ============================================
   滚动动画
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
    .container { padding: 0 24px; }
    .nav-container { padding: 0 24px; }

    .hero-title { font-size: 48px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }

    .details-grid { grid-template-columns: 1fr 1fr; }
    .detail-card-lg { grid-column: 1 / -1; }

    .product-grid { grid-template-columns: repeat(2, 1fr); }

    .about-layout { grid-template-columns: 1fr; gap: 60px; }
    .about-visual { max-width: 500px; }

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

    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
}

@media (max-width: 768px) {
    .nav-links, .nav-phone { display: none; }
    .hamburger { display: flex; }

    .hero-title { font-size: 36px; }
    .hero-subtitle { font-size: 16px; }
    .hero-badge { font-size: 12px; letter-spacing: 2px; }
    .hero-actions { flex-direction: column; align-items: center; }

    .section-title { font-size: 30px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-number { font-size: 36px; }

    .details-grid { grid-template-columns: 1fr; }
    .detail-card-lg { grid-column: auto; }

    .product-grid { grid-template-columns: 1fr; }
    .tab-btn { padding: 12px 28px; font-size: 14px; }

    .honors-timeline::before { left: 30px; }
    .honor-year { font-size: 20px; min-width: auto; width: 50px; }
    .honor-item { gap: 16px; }

    .form-row { grid-template-columns: 1fr; }
    .contact-showcase { padding: 0; }
    .contact-showcase-content { padding: 40px 24px; }
    .showcase-phone span { font-size: 22px; }
    .showcase-phone { padding: 14px 28px; }
    .contact-showcase-content h3 { font-size: 22px; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }

    .about-img-accent { width: 160px; height: 160px; right: -10px; bottom: -20px; }

    .scroll-hint { display: none; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 28px; }
    .hero-content { padding: 0 20px; }

    .section-title { font-size: 26px; }

    .stat-number { font-size: 30px; }

    .product-img { height: 200px; }

    .honor-item { flex-direction: column; gap: 8px; }
    .honor-year { text-align: left; }
    .honors-timeline::before { display: none; }
    .honor-content::before { display: none; }
}