/* ========================================
   爱图腾 itutn 官网样式 v3 - 基于第二轮修改意见
   导航栏放大2倍 | Hero重调 | 品牌介绍恢复v1 | L8活泼配色+放大
   ======================================== */

/* CSS Variables */
:root {
    --primary: #0a0a0a;
    --primary-light: #1a1a2e;
    --accent: #e94560;
    --accent-hover: #d63851;
    --gold: #f0a500;
    --gold-light: #ffc857;
    --text-primary: #1a1a1a;
    --text-secondary: #555;
    --text-light: #888;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-section-alt: #f0f2f5;
    --border-color: #e8e8e8;
    --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 32px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;

    /* L8 活泼配色 */
    --l8-yellow-bg: linear-gradient(180deg, #FFF9E6 0%, #FFF3CC 50%, #FFE8A0 100%);
    --l8-green-bg: linear-gradient(180deg, #E8FFF0 0%, #D4F5E0 50%, #B8ECCF 100%);
    --l8-pink-bg: linear-gradient(180deg, #FFF0F5 0%, #FFDDE6 50%, #FFC8D8 100%);
    --l8-purple-bg: linear-gradient(180deg, #F5F0FF 0%, #E8DFF8 50%, #DDC8F0 100%);
}

/* Reset & Base */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    line-height: 1.7;
    background: var(--bg-white);
    overflow-x: hidden;
}
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button:focus-visible, a:focus-visible {
    outline: 3px solid #f0a500;
    outline-offset: 4px;
}

/* ========================================
   Navigation — 黑色底白字（戴森风）字体放大2倍+
   ======================================== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: #000;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: var(--transition);
    padding: 18px 0;
}
.navbar.scrolled {
    border-bottom-color: rgba(255,255,255,0.12);
    box-shadow: 0 4px 30px rgba(0,0,0,0.5);
    padding: 14px 0;
}
.nav-container { display: flex; align-items: center; justify-content: space-between; }

/* Logo 放大2倍以上 */
.logo-img { height: 64px !important; width: auto; filter: brightness(10) contrast(10); transition: filter 0.3s; }
.logo-img:hover { filter: brightness(10) drop-shadow(0 0 8px rgba(255,255,255,0.3)); }

.nav-links { display: flex; gap: 6px; }
.nav-link {
    font-size: 16px !important; /* 放大2倍：原13px -> 16px */
    font-weight: 600;
    color: rgba(255,255,255,0.75);
    padding: 10px 22px; border-radius: 50px; transition: var(--transition); white-space: nowrap;
    letter-spacing: 0.5px;
}
.nav-link:hover, .nav-link.active {
    color: #fff; background: rgba(255,255,255,0.12);
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2.5px; background: #fff; border-radius: 2px; transition: var(--transition); }

/* ========================================
   Hero Section — 纯黑底+白字，参考v1排版但白字黑底
   itutn爱图腾一行 | 产品图大 | 删除卖点文字 | 不太空
   ======================================== */
.hero-section {
    min-height: 100vh; display: flex; align-items: center; padding-top: 80px;
    background: #000; position: relative; overflow: visible;
}
.hero-content {
    display: grid; grid-template-columns: minmax(620px, 1.3fr) auto; gap: 40px; align-items: center;
    max-width: 1600px; overflow: visible; width: 100%; margin: 0 auto;
}
.hero-text { max-width: none; }

/* Badge — 白底黑字圆角标签 */
.hero-badge {
    display: inline-block; background: #fff; color: #333;
    font-size: 18px; font-weight: 600; padding: 12px 30px; border-radius: 50px;
    margin-bottom: 28px; letter-spacing: 1px;
}

/* 主标题：itutn爱图腾 — 缩小字号+更细字重 */
.hero-title-main {
    font-size: 52px; font-weight: 700; line-height: 1.1; color: #fff;
    margin-bottom: 8px; letter-spacing: -1px;
}

/* 副标题：车载清洁科技领跑者 — 白色，与主标题同字号，不换行 */
.hero-title-sub {
    font-size: 52px; font-weight: 700; line-height: 1.15;
    color: #fff;
    margin-bottom: 24px; letter-spacing: -1px;
    white-space: nowrap;
}

/* 描述文字：真实吸力不虚标... */
.hero-desc {
    font-size: 20px; line-height: 1.5; color: rgba(255,255,255,0.85);
    margin-bottom: 14px; max-width: 520px; font-weight: 500;
}

/* 数据统计行 */
.hero-stats {
    font-size: 15px; line-height: 1.5; color: rgba(255,255,255,0.45);
    margin-bottom: 36px; max-width: 520px; letter-spacing: 0.5px;
}

/* 按钮组 */
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; }
.btn-hero-primary {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 16px 40px; font-size: 20px; font-weight: 700;
    border-radius: 14px; background: #fff; color: #333;
    transition: var(--transition); cursor: pointer; border: none;
    letter-spacing: 1px; box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.btn-hero-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,255,255,0.15); }
.btn-hero-outline {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 16px 40px; font-size: 20px; font-weight: 700;
    border-radius: 14px; background: transparent; color: #fff;
    border: 2px solid rgba(255,255,255,0.3);
    transition: var(--transition); cursor: pointer;
    letter-spacing: 1px; box-shadow: none;
}
.btn-hero-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

/* 保留通用btn-hero样式兼容 */
.btn-hero { display: inline-flex; align-items: center; justify-content: center; padding: 16px 38px; font-size: 15px; font-weight: 700; border-radius: 50px; transition: var(--transition); cursor: pointer; }

/* Hero Carousel 产品轮播 - 产品图放大！不要太空 */
.hero-carousel { position: relative; height: 500px; display: flex; align-items: center; justify-content: center; overflow: visible; margin-left: -40px; }
.hero-slide {
    position: absolute; width: 100%; opacity: 0; transform: scale(0.92) translateX(30px);
    transition: all 0.65s cubic-bezier(0.4,0,0.2,1);
    display: flex; flex-direction: column; align-items: center; pointer-events: none;
}
.hero-slide.active {
    opacity: 1; transform: scale(1) translateX(0); position: relative; pointer-events: auto;
}
/* 产品图底部光晕效果 — 地面反射质感 */
/* 直接挂在img上，跟随每张图的位置和尺寸 */
.hero-product-img {
    width: 520px;
    height: auto; object-fit: contain;
    filter: drop-shadow(0 24px 70px rgba(0,0,0,0.6));
    z-index: 2; position: relative;
}
.hero-product-img::after {
    content: '';
    position: absolute;
    bottom: -8%;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    height: 35%;
    background: radial-gradient(ellipse at center bottom,
        rgba(255, 255, 255, 0.30) 0%,
        rgba(220, 220, 240, 0.15) 25%,
        rgba(180, 180, 210, 0.05) 50%,
        transparent 72%
    );
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
}
/* M8 Ultra深空灰缩小10% */
.hero-product-img.hero-product-img-sm {
    width: 468px; /* 520×0.9 */
}
/* Y8max+奶茶金、M8Pro+二代 缩小10% */
.hero-product-img.hero-product-img-xs {
    width: 468px; /* 416×1.1 ≈ 458，取468与hero-product-img-sm一致 */
}
/* 不再显示卖点文字 */

/* 轮播指示点 — 产品图正下方居中 */
.carousel-dots {
    display: flex; gap: 14px;
    justify-content: center; align-items: center;
    position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    z-index: 10;
}
.dot {
    width: 13px; height: 13px; border-radius: 50%;
    background: rgba(255,255,255,0.25); cursor: pointer;
    transition: var(--transition); border: none;
}
.dot.active { background: #fff; transform: scale(1.3); }

/* ========================================
   Section Common Styles (v1风格白色背景为主)
   ======================================== */
section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-title {
    font-size: 38px; font-weight: 800; color: var(--primary); margin-bottom: 12px;
    position: relative; display: inline-block;
}
.section-title::after {
    content: ''; position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%);
    width: 50px; height: 3px; background: linear-gradient(90deg, var(--accent), var(--gold)); border-radius: 3px;
}
.section-subtitle { font-size: 16px; color: var(--text-light); margin-top: 16px; }

/* Light variants for dark sections — 品牌荣誉/海外销售等黑底区域用 */
.section-subtitle-light { font-size: 17px; color: #b8b8b8; margin-top: 10px; letter-spacing: 0.5px; }

/* Light variants for dark sections */
.section-title-light { font-size: 38px; font-weight: 800; color: #fff; margin-bottom: 0; display: inline-block; position: relative; padding-bottom: 14px; }
.section-title-light::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 50px; height: 3px; background: linear-gradient(90deg, var(--accent), var(--gold)); border-radius: 3px;
}
.section-subtitle-dark { font-size: 17px; color: #e0e0e0; margin-top: 10px; letter-spacing: 0.5px; }

/* ========================================
   About Section (品牌介绍) - 恢复v1版样式 白色背景
   ======================================== */
.about-section { background: var(--bg-white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.about-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.about-image img { width: 100%; height: auto; }
.about-text h3 { font-size: 26px; font-weight: 700; color: var(--primary); margin-bottom: 22px; }
.about-text p { margin-bottom: 16px; color: var(--text-secondary); font-size: 15px; line-height: 1.95; }
.about-text p strong { color: var(--primary); }

/* Timeline - v1风格 */
.about-timeline { margin-top: 32px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.timeline-item {
    background: var(--bg-light); padding: 20px 16px; border-radius: var(--radius-sm);
    text-align: center; border: 1px solid var(--border-color); transition: var(--transition);
}
.timeline-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.timeline-year { font-size: 20px; font-weight: 800; color: var(--accent); margin-bottom: 6px; font-family: 'Inter', sans-serif; }
.timeline-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

/* ========================================
   Products Section (产品中心)
   ======================================== */
.products-section { background: var(--bg-light); }

/* Tab Buttons — 黑色椭圆 */
.product-tabs { display: flex; justify-content: center; gap: 14px; margin-bottom: 52px; }
.tab-btn {
    padding: 14px 42px; font-size: 15px; font-weight: 700;
    border: 2px solid transparent; background: #111; color: rgba(255,255,255,0.6);
    border-radius: 50px; cursor: pointer; transition: var(--transition);
}
.tab-btn:hover { color: #fff; border-color: rgba(255,255,255,0.2); }
.tab-btn.active {
    background: #000; color: #fff; border-color: #fff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

/* Product Series */
.product-series { display: none; }
.product-series.active { display: block; }

/* Product Grid */
.product-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 28px; margin-bottom: 48px;
}

/* L8 Grid - 只2列居中 */
.l8-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

/* Product Card — 颜色主题背景 + 放大图片 */
.product-card {
    background: #fff; border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-sm); border: 1px solid rgba(0,0,0,0.04);
    transition: all 0.35s ease; position: relative;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }

/* Color theme backgrounds for Y8/M8 cards */
.product-card[data-color-theme="gold"] .product-images { background: linear-gradient(180deg, #fef9ef 0%, #fef3d8 100%); }
.product-card[data-color-theme="dark-purple"] .product-images { background: linear-gradient(180deg, #1a1028 0%, #0d0818 100%); }
.product-card[data-color-theme="aurora-purple"] .product-images { background: linear-gradient(180deg, #f5eff8 0%, #ede0f5 100%); }
.product-card[data-color-theme="dark-gray"] .product-images { background: linear-gradient(180deg, #18181c 0%, #0e0e12 100%); }
.product-card[data-color-theme="default"] .product-images { background: linear-gradient(180deg, #f8f9fa 0%, #eeeef2 100%); }

/* L8 活泼配色 - 覆盖data-color-theme */
.product-card[data-color-theme="l8-yellow"] .product-images { background: var(--l8-yellow-bg); }
.product-card[data-color-theme="l8-green"] .product-images { background: var(--l8-green-bg); }

/* Product Badge */
.product-badge {
    position: absolute; top: 14px; left: 14px; z-index: 10;
    padding: 5px 16px; border-radius: 50px; font-size: 11px; font-weight: 700;
    color: #fff;
}
.product-badge.hot { background: linear-gradient(135deg, var(--accent), #ff6b81); }
.product-badge.new { background: linear-gradient(135deg, var(--gold), var(--gold-light)); color: #111; }
.product-badge.pink { background: linear-gradient(135deg, #ff69b4, #ff85c8); }

/* Product Images — 放大！视觉冲击力 */
.product-images {
    position: relative; padding: 48px 24px 44px; text-align: center; min-height: 320px;
    display: flex; align-items: center; justify-content: center;
}

/* L8 — 与Y8/M8同款：上半部彩色渐变，下半部白色 */
.l8-card .product-images {
    background: var(--l8-yellow-bg) !important;
}
.l8-card[data-color-theme="l8-yellow"] .product-images { background: var(--l8-yellow-bg) !important; }
.l8-card[data-color-theme="l8-green"] .product-images { background: var(--l8-green-bg) !important; }
.l8-card .product-info { background: #fff; }

.product-img {
    max-height: 360px; /* 放大产品图 */
    max-width: 420px;
    width: auto; object-fit: contain;
    transition: all 0.4s ease;
}
.product-card:hover .product-img { transform: scale(1.05); }
/* Y8+ 和 L8 产品图额外放大30% */
.product-img-lg { max-height: 374px; max-width: 437px; }
.l8-card .product-img { max-height: 468px; max-width: 546px; }

/* 仅在多图切换的容器中隐藏非active图片 */
.l8-png-mode .product-img:not(.active) { position: absolute; opacity: 0; pointer-events: none; }

/* Product Info */
.product-info { padding: 26px 24px 28px; }
.product-info h3 { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.product-tagline { font-size: 13px; color: var(--text-light); margin-bottom: 14px; }

/* Product Colors */
.product-colors { display: flex; gap: 8px; margin-bottom: 14px; justify-content: center; }
.color-dot {
    width: 26px; height: 26px; border-radius: 50%; cursor: pointer;
    border: 2px solid #fff; box-shadow: 0 0 0 1px rgba(0,0,0,0.1);
    transition: var(--transition);
}
.color-dot:hover, .color-dot.active { box-shadow: 0 0 0 3px var(--accent); transform: scale(1.2); }

/* Product Specs */
.product-specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 14px; padding: 14px; background: #fafafa; border-radius: var(--radius-sm); }
.spec-item { display: flex; justify-content: space-between; align-items: center; }
.spec-label { font-size: 12px; color: var(--text-light); }
.spec-value { font-size: 14px; font-weight: 600; color: var(--primary); }
.spec-value.highlight { color: var(--accent); }

/* Price with "起" */
.product-price { font-size: 28px; font-weight: 900; color: var(--accent); margin-bottom: 12px; font-family: 'Inter', sans-serif; }
.price-suffix { font-size: 15px; font-weight: 500; color: var(--text-light); margin-left: 2px; }

/* Features */
.product-features { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.feature-tag { font-size: 11px; padding: 4px 12px; background: rgba(233,69,96,0.06); color: var(--accent); border-radius: 50px; font-weight: 500; }

/* ========================================
   Honors Section (品牌荣誉) — 黑色背景
   ======================================== */
.honors-section.dark-bg { background: #0a0a0a; }
.honors-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 0;
}
.honors-grid-dark {}

.honor-card {
    background: var(--bg-light); border-radius: var(--radius-lg); padding: 24px;
    text-align: center; border: 1px solid var(--border-color); transition: var(--transition);
}
.honor-card-dark {
    background: transparent; border: 1px solid rgba(255,255,255,0.08); padding: 24px;
}
.honor-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.honor-card-dark:hover { border-color: rgba(255,255,255,0.18); box-shadow: 0 8px 30px rgba(0,0,0,0.4); }

/* 证书直接PNG不用白底 */
.honor-card-dark img {
    width: auto; height: 160px; object-fit: contain; margin: 0 auto 16px;
    border-radius: var(--radius-sm); background: transparent; padding: 0;
}
.honor-card img { width: 100%; height: 180px; object-fit: contain; margin-bottom: 16px; border-radius: var(--radius-sm); background: #fff; padding: 12px; }

.honor-title { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.honor-title-light { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.honor-desc { font-size: 13px; color: var(--text-light); }
.honor-desc-light { font-size: 13px; color: rgba(255,255,255,0.45); }

/* ========================================
   Global Section (海外销售) — 黑底+白字
   ======================================== */
.global-section.dark-bg { background: #0a0a0a; }
.global-content { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.global-image { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid rgba(255,255,255,0.06); }
.global-image img { width: 100%; height: auto; }

.global-text h3 { font-size: 28px; font-weight: 700; color: var(--primary); margin-bottom: 20px; }
.light-text { color: #fff; }
.global-text p { margin-bottom: 16px; color: var(--text-secondary); font-size: 15px; line-height: 1.9; }
.global-text-light p { margin-bottom: 16px; color: rgba(255,255,255,0.65); font-size: 15px; line-height: 1.9; }
.global-text-light p strong { color: #fff; }

.global-highlights { display: flex; gap: 24px; margin-top: 30px; flex-wrap: wrap; }
.highlight-item {
    display: flex; align-items: center; gap: 8px;
    background: #fff; padding: 12px 20px; border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm); font-size: 14px; font-weight: 500; border: 1px solid rgba(0,0,0,0.05);
}
.highlight-item-dark {
    display: flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.06); padding: 12px 20px; border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.08); font-size: 14px; font-weight: 500; color: #ccc;
}
.highlight-icon { font-size: 20px; }

/* ========================================
   Contact Section (联系我们)
   ======================================== */
.contact-section { background: var(--bg-white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 56px; }
.contact-card {
    background: var(--bg-light); border-radius: var(--radius-lg); padding: 32px;
    text-align: center; border: 1px solid var(--border-color); transition: var(--transition);
}
.contact-card:hover { box-shadow: var(--shadow-md); border-color: rgba(233,69,96,0.2); }
.contact-icon {
    width: 52px; height: 52px; background: linear-gradient(135deg, var(--accent), #ff6b81);
    border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px;
}
.contact-icon svg { color: #fff; }
.contact-card h3 { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.contact-card p { font-size: 14px; color: var(--text-secondary); }

.social-section h3 { font-size: 24px; font-weight: 700; color: var(--primary); text-align: center; margin-bottom: 24px; }
.social-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.store-section { margin-top: 48px; }
.store-grid { grid-template-columns: repeat(2, 1fr) !important; }
.social-card {
    background: var(--bg-light); border-radius: var(--radius-md); padding: 22px;
    border: 1px solid var(--border-color); transition: var(--transition);
}
.social-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.social-card.douyin:hover { border-color: #fe2c55; }
.social-card.xhs:hover { border-color: #ff2442; }
.social-card.taobao:hover { border-color: #ff5000; }
.social-card.jd:hover { border-color: #e2231a; }
.social-platform {
    font-size: 12px; font-weight: 700; color: #fff; padding: 4px 14px;
    border-radius: 50px; display: inline-block; margin-bottom: 10px;
}
.social-card.douyin .social-platform { background: #fe2c55; }
.social-card.xhs .social-platform { background: #ff2442; }
.social-card.taobao .social-platform { background: #ff5000; }
.social-card.jd .social-platform { background: #e2231a; }
.social-card h4 { font-size: 14px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.social-card p { font-size: 12px; color: var(--text-light); margin-bottom: 8px; }
.social-link { font-size: 13px; font-weight: 600; color: var(--accent); }
.social-link:hover { text-decoration: underline; }

/* ========================================
   News Section (品牌资讯) — 平台名放大2倍
   ======================================== */
.news-section { background: var(--bg-light); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-card {
    background: white; border-radius: var(--radius-md); padding: 28px;
    border: 1px solid var(--border-color); transition: var(--transition);
    display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(233,69,96,0.2); }

/* 平台名放大2倍 */
.news-source-lg {
    font-size: 24px !important; font-weight: 800; color: var(--primary) !important;
    background: transparent; padding: 0; margin-bottom: 14px;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.news-card h4 { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 8px; line-height: 1.5; }
.news-card p { font-size: 13px; color: var(--text-light); flex: 1; }
.news-arrow { font-size: 18px; color: var(--accent); font-weight: 600; margin-top: 14px; }

/* ========================================
   AW Value Section (关于AW值)
   ======================================== */
.aw-section { background: #FFF9F0; padding: 100px 0 80px; }

/* 导语 */
.aw-intro { max-width: 1300px; margin: 0 auto 50px; padding: 32px; background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border-left: 4px solid #1a1a1a; }
.aw-intro p { font-size: 15px; color: var(--text-secondary); line-height: 1.9; margin-bottom: 12px; }
.aw-intro p:last-child { margin-bottom: 0; }
p.aw-highlight { color: #d63031; font-weight: 700; }

/* 大模块块 */
.aw-block { max-width: 1300px; margin: 0 auto 50px; }
.aw-block:last-child { margin-bottom: 0; }
.aw-block-title { font-size: 22px; font-weight: 800; color: var(--primary); margin-bottom: 24px; display: flex; align-items: center; gap: 12px; }
.aw-num { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 50%; background: #1a1a1a; color: #fff; font-size: 14px; font-weight: 700; flex-shrink: 0; }

/* 子模块 */
.aw-sub-block { margin-bottom: 28px; }
.aw-sub-block:last-child { margin-bottom: 0; }
.aw-sub-title { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 12px; }

/* 公式框 */
.aw-formula { display: inline-block; background: var(--primary); color: #fff; padding: 14px 28px; border-radius: var(--radius-sm); font-size: 17px; font-weight: 700; letter-spacing: 0.5px; margin: 12px 0; }

/* 参数卡片 */
.aw-params { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 16px 0; }
.aw-param-card { background: #fff; padding: 20px; border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); }
.aw-param-card h5 { font-size: 15px; font-weight: 700; color: var(--accent); margin-bottom: 8px; }
.aw-param-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }

/* 举例说明 */
.aw-example { background: #fff; padding: 24px; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); margin-top: 16px; }
.aw-example p { font-size: 14px; color: var(--text-secondary); line-height: 1.9; margin-bottom: 10px; }
.aw-example p:last-child { margin-bottom: 0; }

/* 选购指南列表 */
.aw-guide-list { margin-top: 24px; }
.aw-guide-item { display: flex; gap: 20px; margin-bottom: 24px; background: #fff; padding: 24px; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.aw-guide-item:last-child { margin-bottom: 0; }
.aw-guide-num { display: flex; align-items: flex-start; justify-content: center; width: 36px; height: 36px; min-width: 36px; border-radius: 10px; background: #1a1a1a; font-size: 16px; font-weight: 800; color: #fff; padding-top: 6px; }
.aw-guide-content h4 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.aw-guide-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.9; margin-bottom: 8px; }
.aw-guide-content p:last-child { margin-bottom: 0; }

/* 选购建议 */
.aw-tip { background: #1a1a1a; padding: 24px; border-radius: var(--radius-md); margin-top: 24px; }
.aw-tip p { font-size: 14px; color: #fff; line-height: 1.9; margin: 0; }

/* 检测报告 */
.aw-report-desc { font-size: 15px; color: var(--text-secondary); margin-bottom: 24px; }
.aw-report-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.aw-report-card { background: #fff; border-radius: var(--radius-md); padding: 24px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); text-align: center; transition: var(--transition); }
.aw-report-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.aw-report-card img { max-height: 180px; object-fit: contain; margin: 0 auto 16px; }
.aw-report-card h4 { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.aw-report-card .aw-val { font-size: 20px; font-weight: 800; color: var(--accent); margin-bottom: 12px; }
.aw-report-card a { display: inline-block; padding: 8px 20px; background: var(--primary); color: #fff; border-radius: 20px; font-size: 13px; font-weight: 600; transition: var(--transition); }
.aw-report-card a:hover { background: var(--accent); }

/* Responsive */
@media (max-width: 768px) {
    .aw-params { grid-template-columns: 1fr; }
    .aw-guide-item { flex-direction: column; gap: 12px; }
    .aw-intro { padding: 20px; }
    .aw-section { padding: 60px 0 50px; }
}

/* ========================================
   FAQ Section
   ======================================== */
.faq-section { background: var(--bg-white); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border-color); }
.faq-question {
    width: 100%; display: flex; justify-content: space-between; align-items: center;
    padding: 22px 0; background: none; border: none;
    font-size: 15px; font-weight: 600; color: var(--primary); cursor: pointer; text-align: left;
    transition: var(--transition);
}
.faq-question:hover { color: var(--accent); }
.faq-icon { font-size: 20px; font-weight: 300; color: var(--accent); transition: transform 0.3s ease; flex-shrink: 0; margin-left: 16px; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item.open .faq-answer { max-height: 220px; }
.faq-answer p { padding-bottom: 22px; font-size: 14px; color: var(--text-secondary); line-height: 1.9; }

/* ========================================
   Footer
   ======================================== */
.footer { background: #080808; color: rgba(255,255,255,0.5); padding: 60px 0 0; }
.footer-content { display: grid; grid-template-columns: 1fr 2fr; gap: 60px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.07); }
.footer-brand img { height: 40px; margin-bottom: 12px; filter: brightness(10); }
.footer-brand p { font-size: 14px; margin-bottom: 4px; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 13px; color: rgba(255,255,255,0.35); margin-bottom: 8px; transition: var(--transition); }
.footer-col a:hover { color: #fff; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 12px; color: rgba(255,255,255,0.25); line-height: 2; }
.footer-bottom a:hover { color: rgba(255,255,255,0.6); }
.icp { margin-top: 8px; font-size: 12px; }
.icp a { color: rgba(255,255,255,0.5); text-decoration: none; transition: var(--transition); }
.icp a:hover { color: rgba(255,255,255,0.8); text-decoration: underline; }
.complaint { margin-top: 4px; font-size: 12px; }
.complaint a { color: rgba(255,255,255,0.5); text-decoration: none; transition: var(--transition); }
.complaint a:hover { color: rgba(255,255,255,0.8); text-decoration: underline; }
.gongan { margin-top: 4px; font-size: 12px; line-height: 1.4; }
.gongan a { color: rgba(255,255,255,0.5); text-decoration: none; transition: var(--transition); }
.gongan a:hover { color: rgba(255,255,255,0.8); text-decoration: underline; }
.gongan img { vertical-align: -3px; margin-right: 2px; }

/* ========================================
   Back to Top
   ======================================== */
.back-to-top {
    position: fixed; bottom: 32px; right: 32px; width: 44px; height: 44px;
    background: var(--accent); color: #fff; border: none; border-radius: 50%;
    font-size: 18px; cursor: pointer; opacity: 0; visibility: hidden;
    transition: var(--transition); box-shadow: var(--shadow-md); z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

/* ========================================
   Animations
   ======================================== */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .hero-title-main { font-size: 40px; }
    .hero-title-sub { font-size: 38px; }
    .hero-desc { font-size: 17px; }
    .hero-stats { font-size: 13px; }
    .btn-hero-primary, .btn-hero-outline { padding: 14px 32px; font-size: 14px; }
    .hero-product-img { width: 900px; max-width: 900px; }
    .hero-product-img.l8-featured { width: 1200px; max-width: 1200px; }
    .hero-carousel { height: 700px; }
    .hero-content { gap: 30px; grid-template-columns: 1fr 1fr; }
    .about-timeline { grid-template-columns: repeat(2, 1fr); }
    .honors-grid { grid-template-columns: repeat(2, 1fr); }
    .social-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .news-source-lg { font-size: 20px !important; }
    .global-content { grid-template-columns: 1fr; gap: 30px; }
    .nav-link { font-size: 14px !important; padding: 8px 16px; }
}

@media (max-width: 768px) {
    /* Mobile Nav */
    .nav-links {
        position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
        background: #111; flex-direction: column; padding: 80px 24px 24px;
        box-shadow: var(--shadow-xl); transition: right 0.3s ease; z-index: 999;
    }
    .nav-links.open { right: 0; }
    .nav-link { font-size: 16px !important; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .nav-toggle { display: flex; z-index: 1001; }
    .nav-toggle span { background: #fff; }

    /* Hero Mobile */
    .hero-content { grid-template-columns: 1fr; gap: 24px; text-align: center; }
    .hero-title-main { font-size: 32px; }
    .hero-title-sub { font-size: 30px; }
    .hero-desc { font-size: 15px; max-width: none; }
    .hero-actions { justify-content: center; }
    .logo-img { height: 46px !important; }
    .hero-carousel { height: 560px; }
    .hero-product-img { width: 600px; max-width: 600px; }
    .hero-product-img.l8-featured { width: 800px; max-width: 800px; }

    /* Sections */
    section { padding: 64px 0; }
    .section-title { font-size: 28px; }
    .section-title-light { font-size: 28px; }
    .section-subtitle { font-size: 14px; }

    /* About */
    .about-grid { grid-template-columns: 1fr; gap: 30px; }
    .about-timeline { grid-template-columns: repeat(2, 1fr); }

    /* Products */
    .tab-btn { padding: 11px 28px; font-size: 14px; }
    .product-grid { grid-template-columns: 1fr; max-width: 440px; margin-left: auto; margin-right: auto; }
    .product-images { min-height: 260px; padding: 36px 20px 32px; }
    .product-img { max-height: 220px; max-width: 260px; }
    .product-price { font-size: 24px; }

    /* L8 Grid Mobile */
    .l8-grid { grid-template-columns: 1fr; max-width: 420px; }

    /* Honors */
    .honors-grid { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; }

    /* Global */
    .global-highlights { flex-direction: column; gap: 12px; }

    /* Contact */
    .contact-grid { grid-template-columns: 1fr; }
    .social-grid { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; }

    /* News */
    .news-grid { grid-template-columns: 1fr; }
    .news-source-lg { font-size: 22px !important; }

    /* Footer */
    .footer-content { grid-template-columns: 1fr; gap: 30px; }
    .footer-links { grid-template-columns: repeat(2, 1fr); gap: 24px; }

}

@media (max-width: 480px) {
    .hero-title-main { font-size: 26px; }
    .hero-title-sub { font-size: 22px; }
    .hero-product-img { width: 480px; max-width: 480px; }
    .hero-product-img.l8-featured { width: 640px; max-width: 640px; }
    .hero-carousel { height: 440px; }
    .about-timeline { grid-template-columns: 1fr 1fr; }
    .product-specs { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; }
    .news-source-lg { font-size: 20px !important; }
    .nav-link { font-size: 14px !important; }
}
/* WordPress integration */
.admin-bar .navbar { top: 32px; }
.wp-content-wrap { min-height: 70vh; padding: 150px 0 80px; background: #f5f5f5; }
.wp-entry-card { max-width: 900px; margin: 0 auto 28px; padding: 36px; background: #fff; border-radius: 20px; box-shadow: var(--shadow-sm); }
.wp-entry-card h1 { margin-bottom: 20px; line-height: 1.25; }
.wp-entry-content > * + * { margin-top: 1em; }
@media (max-width: 782px) {
    .admin-bar .navbar { top: 46px; }
}

/* Prevent the oversized hero product render from widening small screens. */
@media (max-width: 768px) {
    .hero-section { overflow: hidden; }
    .hero-content { grid-template-columns: minmax(0, 1fr); min-width: 0; width: 100%; }
    .hero-text, .hero-carousel { min-width: 0; width: 100%; }
}

@media (max-width: 480px) {
    .hero-badge { max-width: 100%; padding: 10px 16px; font-size: 14px; }
    .hero-desc, .hero-stats { overflow-wrap: anywhere; }
}