/* ===== PANDA ALUMINIUM PRODUCTS 官网样式 ===== */
:root {
    --primary: #C48B5A;
    --primary-2: #DBA878;
    --primary-grad: linear-gradient(135deg, #C48B5A 0%, #DBA878 100%);
    --dark: #1a1a1a;
    --dark-2: #2a2a2a;
    --text: #1a1a1a;
    --muted: #888;
    --bg: #f5f5f5;
    --card: #ffffff;
    --line: #f0f0f0;
    --radius: 20px;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-hover: 0 20px 50px rgba(0,0,0,0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* ===== Header ===== */
.header {
    background: white;
    padding: 16px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 100;
    flex-wrap: wrap;
    gap: 12px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-img { height: 46px; width: auto; display: block; filter: drop-shadow(0 2px 8px rgba(196,139,90,0.18)); }
.footer-logo-img { height: 44px; width: auto; display: block; margin-bottom: 14px; opacity: .92; }
.nav { display: flex; gap: 28px; }
.nav a { text-decoration: none; color: #555; font-size: 14px; font-weight: 500; padding: 6px 0; position: relative; transition: color .3s; }
.nav a:hover, .nav a.active { color: var(--primary); }
.header-right { display: flex; align-items: center; gap: 16px; }

/* 语言切换 */
.lang-switch { display: flex; background: #f5f5f5; border-radius: 30px; padding: 4px; gap: 2px; }
.lang-btn {
    border: none; background: transparent; padding: 6px 12px;
    border-radius: 24px; font-size: 12px; font-weight: 700; color: #777;
    cursor: pointer; transition: all .3s;
}
.lang-btn:hover { color: var(--primary); }
.lang-btn.active { background: white; color: var(--primary); box-shadow: 0 2px 8px rgba(0,0,0,0.1); }

.btn-primary {
    background: var(--primary-grad); color: white;
    padding: 11px 24px; border-radius: 30px; font-size: 13px; font-weight: 600;
    text-decoration: none; display: inline-block;
    box-shadow: 0 4px 15px rgba(196,139,90,0.3); transition: all .3s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(196,139,90,0.4); }

/* ===== Hero ===== */
.hero {
    background: linear-gradient(135deg, #faf7f2 0%, #f0ebe3 100%);
    padding: 70px 60px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center;
    position: relative; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute;
    width: 520px; height: 520px;
    background: radial-gradient(circle, rgba(196,139,90,0.10) 0%, transparent 70%);
    top: -120px; right: -120px; border-radius: 50%;
}
.hero-content { position: relative; z-index: 1; }
.hero-tag {
    display: inline-flex; align-items: center; gap: 8px;
    background: white; padding: 7px 16px; border-radius: 30px;
    font-size: 12px; font-weight: 600; color: var(--primary);
    margin-bottom: 20px; box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.hero-tag .star { color: #ffc107; }
.hero h2 { font-size: 44px; font-weight: 800; line-height: 1.1; letter-spacing: -1px; }
.hero-accent {
    background: var(--primary-grad);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; margin-bottom: 16px;
}
.hero p { font-size: 16px; color: #666; line-height: 1.7; margin-bottom: 28px; max-width: 480px; }
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-hero-primary {
    background: var(--primary-grad); color: white; text-decoration: none;
    padding: 14px 30px; border-radius: 50px; font-size: 15px; font-weight: 600;
    box-shadow: 0 8px 25px rgba(196,139,90,0.3); transition: all .3s;
}
.btn-hero-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 35px rgba(196,139,90,0.4); }
.btn-hero-secondary {
    background: white; color: var(--text); text-decoration: none;
    padding: 14px 30px; border-radius: 50px; font-size: 15px; font-weight: 600;
    border: 2px solid #eee; transition: all .3s;
}
.btn-hero-secondary:hover { border-color: var(--primary); color: var(--primary); }
.hero-stats {
    display: flex; gap: 36px; margin-top: 36px; padding-top: 24px;
    border-top: 1px solid #e8e8e8;
}
.stat-item h3 { font-size: 28px; font-weight: 800; }
.stat-item p { font-size: 13px; color: #999; margin-top: 2px; }
.hero-image { position: relative; z-index: 1; }
.hero-image-main {
    width: 100%; aspect-ratio: 4/3; border-radius: 20px; overflow: hidden;
    box-shadow: 0 30px 80px rgba(0,0,0,0.15);
}
.hero-image-main img { width: 100%; height: 100%; object-fit: cover; }
.hero-image-float {
    position: absolute; bottom: -24px; left: -24px;
    width: 150px; height: 150px; border-radius: 14px; overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.2); border: 4px solid white;
}
.hero-image-float img { width: 100%; height: 100%; object-fit: cover; }

/* ===== Section ===== */
.section { padding: 70px 60px; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-label {
    display: inline-block;
    color: var(--primary); font-size: 13px; font-weight: 800;
    text-transform: uppercase; letter-spacing: 3px; margin-bottom: 16px;
    padding: 7px 18px; background: rgba(196,139,90,0.12); border-radius: 20px;
}
.section-header h2 {
    font-size: 44px; font-weight: 900; letter-spacing: -1px; margin-bottom: 14px;
    background: linear-gradient(135deg, #C48B5A, #a06a35);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-header p { font-size: 16px; color: var(--muted); max-width: 560px; margin: 0 auto; line-height: 1.6; }

/* ===== Filter ===== */
.filter-bar {
    background: white; border-radius: var(--radius); padding: 24px;
    box-shadow: var(--shadow); margin-bottom: 32px;
    display: flex; flex-direction: column; gap: 16px;
    max-width: 960px; margin-left: auto; margin-right: auto;
}
.filter-group { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.filter-label { font-size: 13px; font-weight: 700; color: var(--muted); min-width: 44px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
    border: 1.5px solid #e5e5e5; background: white; color: #555;
    padding: 7px 16px; border-radius: 30px; font-size: 13px; font-weight: 600;
    cursor: pointer; transition: all .25s;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active { background: var(--primary-grad); border-color: transparent; color: white; box-shadow: 0 4px 12px rgba(196,139,90,0.3); }
.chip .chip-count { opacity: .7; font-size: 11px; margin-left: 4px; }
.filter-result { font-size: 13px; color: var(--muted); text-align: center; }

/* ===== Products Grid ===== */
.products-grid {
    display: flex; flex-wrap: wrap;
    justify-content: center;   /* 所有卡片居中 */
    gap: 24px;
    max-width: 1280px; margin: 0 auto;
}
.product-card {
    width: 285px;
    background: var(--card); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); border: 1px solid var(--line);
    transition: all .4s cubic-bezier(0.4,0,0.2,1);
    animation: fadeUp .5s ease both;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.product-image { height: 220px; overflow: hidden; position: relative; }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.product-card:hover .product-image img { transform: scale(1.06); }
.product-badge {
    position: absolute; top: 12px; left: 12px;
    background: var(--primary-grad); color: white;
    padding: 5px 12px; border-radius: 20px; font-size: 11px; font-weight: 700;
    box-shadow: 0 4px 12px rgba(196,139,90,0.3);
}
.product-info { padding: 18px; }
.product-type { font-size: 10px; color: var(--primary); font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 6px; }
.product-name { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.product-desc { font-size: 12.5px; color: var(--muted); line-height: 1.5; margin-bottom: 14px; }
.product-bottom { display: flex; justify-content: space-between; align-items: center; }
.product-price { display: flex; align-items: baseline; gap: 4px; }
.price-amount { font-size: 22px; font-weight: 800; }
.price-unit { font-size: 12px; color: #999; }
.product-btn {
    width: 38px; height: 38px; background: var(--primary-grad); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: white; text-decoration: none; font-size: 18px;
    box-shadow: 0 4px 12px rgba(196,139,90,0.3); transition: all .3s;
}
.product-btn:hover { transform: scale(1.12); }
.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); grid-column: 1 / -1; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Videos ===== */
.videos-section { background: #faf7f2; }
.video-slider {
    position: relative; max-width: 1000px; margin: 0 auto;
    overflow: hidden; border-radius: 24px;
    box-shadow: 0 24px 60px rgba(0,0,0,0.16);
    border: 3px solid rgba(196,139,90,0.85);   /* 外圈金棕边框，切换时内部无连接线 */
}
.videos-track {
    display: flex; transition: transform .55s cubic-bezier(.6,.05,.28,1);
    will-change: transform;
}
.video-card {
    flex: 0 0 100%; min-width: 100%; position: relative;
    background: #1a1a1a; overflow: hidden;
    /* 不再固定 4:3：让 video-frame 16:9 + title 决定整体高度，避免下方留黑区 */
}
.video-arrow-l, .video-arrow-r {
    position: absolute; top: 50%; transform: translateY(-50%);
    z-index: 6; width: 54px; height: 54px; border-radius: 50%;
    background: linear-gradient(135deg, #C48B5A, #a06a35);
    color: white; border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 28px; font-weight: 700;
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
    transition: all .25s;
}
.video-arrow-l { left: 12px; }
.video-arrow-r { right: 12px; }
.video-arrow-l:hover, .video-arrow-r:hover { transform: translateY(-50%) scale(1.1); background: linear-gradient(135deg, #d69a67, #b0753a); }
.video-dots {
    position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
    display: flex; gap: 8px; z-index: 6;
}
.video-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: rgba(255,255,255,0.4); border: none;
    cursor: pointer; transition: all .25s;
}
.video-dot.active { background: white; width: 24px; border-radius: 8px; }
.video-frame { position: relative; aspect-ratio: 16/9; background: var(--dark); }
.video-frame video { width: 100%; height: 100%; object-fit: cover; }
.video-placeholder {
    width: 100%; height: 100%; display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 10px; color: #aaa;
    font-size: 14px;
}
.video-placeholder .big { font-size: 40px; }
.video-title {
    /* 视频上方独立条带（实心黑底）· 底部与视频交界处一条金棕横线（每卡独立，切换不连成直线） */
    padding: 16px 20px;
    background: rgba(0,0,0,0.85);
    text-align: center;
    border-bottom: 2px solid rgba(196,139,90,0.85);
}
.vt-text {
    font-size: 36px; font-weight: 800;
    letter-spacing: 2px;
    /* 封面感字体：艺术衬线（英文 Playfair/Georgia，中文思源宋体/宋体） */
    font-family: 'Playfair Display', Georgia, 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    /* 左右渐变：浅金 → 白（比之前浅一档） */
    background: linear-gradient(90deg, #F0A35E 0%, #F7C58C 50%, #FFFFFF 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}

/* ===== Features ===== */
.features-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 28px; max-width: 1100px; margin: 0 auto;
}
.feature-item { text-align: center; padding: 28px 18px; border-radius: var(--radius); transition: all .3s; }
.feature-item:hover { background: #faf7f2; }
.feature-icon {
    width: 68px; height: 68px;
    background: linear-gradient(135deg, #faf7f2, #f0ebe3);
    border-radius: 18px; display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px; font-size: 30px; transition: all .3s;
}
.feature-item:hover .feature-icon { background: var(--primary-grad); transform: scale(1.1); }
.feature-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.feature-item p { font-size: 13.5px; color: var(--muted); line-height: 1.6; }

/* ===== Contact ===== */
.contact-section { background: white; }
.contact-grid {
    display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px;
    max-width: 1000px; margin: 0 auto;
}
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; }
.contact-icon {
    width: 46px; height: 46px; flex-shrink: 0;
    background: linear-gradient(135deg, #C48B5A, #DBA878);
    border-radius: 14px; display: flex; align-items: center; justify-content: center;
    color: white; box-shadow: 0 6px 16px rgba(196,139,90,0.25);
}
.contact-icon svg { width: 22px; height: 22px; }
.contact-item h4 { font-size: 14px; font-weight: 700; margin-bottom: 2px; }
.contact-item p { font-size: 14px; color: #555; }
.contact-cta { display: flex; flex-direction: column; gap: 14px; justify-content: center; }
.btn-whatsapp, .btn-facebook {
    padding: 16px 24px; border-radius: 14px; text-decoration: none;
    font-size: 15px; font-weight: 700; text-align: center; transition: all .3s;
}
.btn-whatsapp { background: #25D366; color: white; box-shadow: 0 6px 20px rgba(37,211,102,0.3); }
.btn-whatsapp:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(37,211,102,0.4); }
.btn-facebook { background: #1877F2; color: white; box-shadow: 0 6px 20px rgba(24,119,242,0.3); }
.btn-facebook:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(24,119,242,0.4); }

/* ===== Footer ===== */
.footer {
    background: var(--dark); color: white; padding: 40px 60px 24px;
}
.footer-brand h3 { font-size: 20px; font-weight: 800; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.logo-mini {
    width: 32px; height: 32px; background: var(--primary-grad); border-radius: 50%;
    display: flex; align-items: center; justify-content: center; font-size: 15px;
}
.footer-brand p { font-size: 13px; color: #888; line-height: 1.7; max-width: 640px; }
.footer-bottom {
    border-top: 1px solid #2a2a2a; margin-top: 28px; padding-top: 20px;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
    font-size: 12.5px; color: #666;
}

/* ===== WhatsApp Float ===== */
.wa-float {
    position: fixed; bottom: 24px; right: 24px;
    width: 58px; height: 58px; border-radius: 50%;
    background: #25D366; color: white; font-size: 26px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 8px 25px rgba(37,211,102,0.4); z-index: 200;
    text-decoration: none; transition: all .3s;
}
.wa-float:hover { transform: scale(1.12); }

/* ===== 报价区间表 ===== */
.quote-section { background: #faf7f2; }
.calc-rule {
    background: linear-gradient(135deg, #faf7f2, #f3ece2);
    border: 1.5px solid rgba(196,139,90,0.45);
    border-radius: 16px;
    padding: 22px 26px;
    max-width: 780px; margin: 0 auto 26px;
    text-align: center;
}
.calc-rule-text {
    font-size: 16px; font-weight: 700; color: var(--text);
    line-height: 1.7; margin-top: 6px;
}
.calc-rule-notes {
    list-style: none; margin-top: 12px;
    display: flex; flex-direction: column; gap: 6px;
    font-size: 13.5px; color: #666;
}
.calc-rule-notes li::before { content: "• "; color: #C48B5A; font-weight: 800; }
.price-table-wrap {
    background: white; border-radius: var(--radius); padding: 24px;
    box-shadow: var(--shadow); max-width: 900px; margin: 0 auto 40px;
    overflow-x: auto;
}
.price-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }
.price-table th {
    text-align: left; padding: 12px 16px; background: #faf7f2;
    font-size: 12px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 1px; color: var(--primary); border-bottom: 2px solid #f0e6da;
}
.price-table td { padding: 11px 16px; border-bottom: 1px solid var(--line); color: #444; }
.price-table tr:last-child td { border-bottom: none; }
.price-table td:last-child { color: var(--muted); font-size: 13px; }
.price-table .pt-price { font-weight: 800; color: var(--text); white-space: nowrap; }

/* ===== 报价计算器 ===== */
.calculator {
    background: white; border-radius: 24px; padding: 36px;
    box-shadow: 0 30px 80px rgba(196,139,90,0.18), 0 2px 6px rgba(0,0,0,0.05);
    max-width: 920px; margin: 0 auto 40px;
    border: 1px solid rgba(196,139,90,0.15);
    position: relative; overflow: hidden;
}
.calculator::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 5px;
    background: linear-gradient(90deg, #C48B5A 0%, #DBA878 50%, #C48B5A 100%);
}
.calc-title {
    font-size: 22px; font-weight: 800; margin-bottom: 24px;
    display: flex; align-items: center; gap: 10px;
    background: linear-gradient(135deg, #C48B5A 0%, #DBA878 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.calc-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px; margin-bottom: 26px;
}
.calc-field { display: flex; flex-direction: column; gap: 6px; }
.calc-field label { font-size: 12.5px; font-weight: 700; color: var(--muted); letter-spacing: 0.3px; }
.calc-field select, .calc-field input[type="number"] {
    padding: 12px 14px; border: 2px solid #ebe2d4; border-radius: 12px;
    font-size: 15px; font-weight: 600; background: #fdfaf4; color: var(--text);
    outline: none; transition: all .25s; width: 100%;
}
.calc-field select:hover, .calc-field input:hover { border-color: var(--primary); background: white; }
.calc-field select:focus, .calc-field input:focus { border-color: var(--primary); background: white; box-shadow: 0 0 0 4px rgba(196,139,90,0.12); }
.calc-check { justify-content: flex-end; }
.calc-check label {
    display: flex; align-items: center; gap: 8px; cursor: pointer;
    font-size: 13.5px; color: #555; font-weight: 600; padding: 10px 0;
}
.calc-check input { width: 17px; height: 17px; accent-color: var(--primary); }

.calc-result {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    border-radius: 18px; padding: 26px 28px; margin-bottom: 22px;
    color: #f0e6da; position: relative; overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}
.calc-result::before {
    content: ''; position: absolute; top: -50%; right: -10%;
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(196,139,90,0.25) 0%, transparent 70%);
    border-radius: 50%;
}
.cr-line {
    display: flex; justify-content: space-between; padding: 8px 0;
    font-size: 14px; color: #c8b89e;
    border-bottom: 1px solid rgba(196,139,90,0.15);
    position: relative; z-index: 1;
}
.cr-line:last-of-type { border-bottom: none; }
.cr-line .v { font-weight: 700; color: #f5eadb; }
.cr-total {
    display: flex; justify-content: space-between; align-items: baseline;
    padding-top: 18px; margin-top: 10px;
    border-top: 2px solid var(--primary);
    position: relative; z-index: 1;
}
.cr-total .label { font-size: 14px; font-weight: 700; color: #d4b896; text-transform: uppercase; letter-spacing: 1.5px; }
.cr-total .amount {
    font-size: 38px; font-weight: 800;
    background: linear-gradient(135deg, #DBA878 0%, #fff 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}
.cr-other { display: flex; gap: 16px; flex-wrap: wrap; padding-top: 14px; font-size: 12.5px; color: #a08f78; font-weight: 600; position: relative; z-index: 1; }
.cr-other span { background: rgba(255,255,255,0.05); padding: 4px 10px; border-radius: 20px; }
.cr-note { font-size: 11.5px; color: #8a7a64; padding-top: 10px; line-height: 1.5; position: relative; z-index: 1; }

.btn-calc {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    color: white; border: none;
    padding: 16px 32px; border-radius: 30px; font-size: 15px; font-weight: 700;
    cursor: pointer; transition: all .3s;
    box-shadow: 0 8px 22px rgba(0,0,0,0.2);
    width: 100%; letter-spacing: 0.5px;
    position: relative; overflow: hidden;
}
.btn-calc:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(196,139,90,0.35); }
.btn-calc.copied { background: linear-gradient(135deg, #25D366 0%, #128C7E 100%); box-shadow: 0 8px 22px rgba(37,211,102,0.4); }

/* ===== 维修规则 ===== */
.maintenance {
    background: white; border-radius: var(--radius); padding: 32px;
    box-shadow: var(--shadow); max-width: 900px; margin: 0 auto;
}
.maint-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.maint-list li {
    display: flex; gap: 12px; align-items: flex-start;
    font-size: 14px; color: #555; line-height: 1.6;
}
.maint-list li::before { content: '🔧'; flex-shrink: 0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero { grid-template-columns: 1fr; padding: 50px 30px; }
    .hero-image { max-width: 560px; }
    .section { padding: 50px 30px; }
    .footer { padding: 32px 30px 20px; }
    .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .header { padding: 12px 18px; }
    .nav { order: 3; width: 100%; justify-content: space-around; gap: 4px; overflow-x: auto; }
    .nav a { font-size: 12.5px; white-space: nowrap; }
    .header-right { gap: 10px; }
    .lang-btn { padding: 5px 9px; font-size: 11px; }
    .btn-primary { padding: 9px 16px; font-size: 12px; }
    .hero h2 { font-size: 32px; }
    .hero-stats { gap: 20px; }
    .stat-item h3 { font-size: 22px; }
    .products-grid { gap: 14px; }
    .product-card { width: 45%; min-width: 160px; }
    .section { padding: 40px 18px; }
    .filter-bar { padding: 16px; }
    .hero-image-float { width: 110px; height: 110px; }
    .calculator, .maintenance { padding: 22px; }
    .cr-total .amount { font-size: 24px; }
}

/* ===== Showcase 幻灯片 ===== */
.hero-slider-wrap {
    position: relative; width: 100%; margin: 0 auto;
    overflow: hidden;
}
.hero-slider-track {
    display: flex;
    transition: transform .55s cubic-bezier(.6,.05,.28,1);
    will-change: transform;
}
.hero-slide {
    flex: 0 0 100%;
    aspect-ratio: 1/1;     /* 1:1 正方形容器：所有幻灯片图都是正方形，contain 后完美填满 */
    border-radius: 20px; overflow: hidden;
    background: #faf7f2; position: relative;
    box-shadow: 0 18px 40px rgba(0,0,0,0.18);
}
.hero-slide img {
    width: 100%; height: 100%;
    object-fit: cover;     /* 填满容器：正方形图=完美填满无白边 */
    display: block;
}
.hero-arrow-l, .hero-arrow-r {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 54px; height: 54px; border-radius: 50%;
    background: linear-gradient(135deg, #C48B5A, #a06a35);
    color: white; border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 28px; font-weight: 700;
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
    z-index: 5; transition: all .25s;
}
.hero-arrow-l:hover, .hero-arrow-r:hover { transform: translateY(-50%) scale(1.1); background: linear-gradient(135deg, #d69a67, #b0753a); }
.hero-arrow-l { left: 12px; }
.hero-arrow-r { right: 12px; }
.hero-dots {
    position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
    display: flex; gap: 8px; z-index: 4;
}
.hero-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: rgba(255,255,255,0.4); border: none;
    cursor: pointer; transition: all .25s;
}
.hero-dot.active { background: white; width: 24px; border-radius: 8px; }
.hero-color-tag {
    position: absolute; top: 16px; left: 20px;
    background: rgba(0,0,0,0.7); color: white;
    padding: 6px 14px; border-radius: 30px;
    font-size: 11px; font-weight: 800; letter-spacing: 1.5px;
    backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.15);
    z-index: 4;
}

@media (max-width: 768px) {
    .hero-slide { aspect-ratio: 1/1; }
}