/* ===== Reset & Variables ===== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
:root {
    --bg: #FFFFFF; --bg2: #FFFAF0;
    --surface: rgba(184,134,11,0.02); --surface2: rgba(184,134,11,0.05);
    --border: rgba(184,134,11,0.08); --border2: rgba(184,134,11,0.14);
    --accent: #B8860B; --accent2: #D4AF37;
    --cyan: #8B6914; --cyan2: #6B5210;
    --grad: linear-gradient(135deg, #C41E3A, #B8860B);
    --grad2: linear-gradient(135deg, #B8860B, #D4AF37);
    --text: #C41E3A; --text2: #A01830; --text3: #B07070;
    --white: #ffffff;
    --serif: 'Noto Serif SC', serif;
    --sans: 'Noto Sans SC', sans-serif;
    --article-bg: #f5f0e6; --article-card: #fffdf8; --article-border: rgba(184,134,11,0.12);
    --article-hover: rgba(184,134,11,0.06); --article-glow: rgba(184,134,11,0.04);
}
/* ===== Theme: Dark Tech ===== */
[data-theme="dark"] {
    --bg: #080C18; --bg2: #0D1322;
    --surface: rgba(255,255,255,0.03); --surface2: rgba(255,255,255,0.06);
    --border: rgba(255,255,255,0.06); --border2: rgba(255,255,255,0.1);
    --accent: #6366F1; --accent2: #8B5CF6;
    --cyan: #22D3EE; --cyan2: #06B6D4;
    --grad: linear-gradient(135deg, #6366F1, #8B5CF6, #22D3EE);
    --grad2: linear-gradient(135deg, #6366F1, #3B82F6);
    --text: #E2E8F0; --text2: #94A3B8; --text3: #64748B;
    --article-bg: #0e1525; --article-card: #151d30; --article-border: rgba(99,102,241,0.15);
    --article-hover: rgba(99,102,241,0.08); --article-glow: rgba(99,102,241,0.05);
}
/* ===== Theme: 中国红 ===== */
[data-theme="clean"] {
    --bg: #FFF5F5; --bg2: #FFECEC;
    --surface: rgba(196,30,58,0.03); --surface2: rgba(196,30,58,0.06);
    --border: rgba(196,30,58,0.1); --border2: rgba(196,30,58,0.18);
    --accent: #C41E3A; --accent2: #E03A2E;
    --cyan: #D49A0E; --cyan2: #B8860B;
    --grad: linear-gradient(135deg, #C41E3A, #E03A2E, #D49A0E);
    --grad2: linear-gradient(135deg, #C41E3A, #A01830);
    --text: #2D1010; --text2: #7A3030; --text3: #B07070;
    --article-bg: #fce8e8; --article-card: #fff8f8; --article-border: rgba(196,30,58,0.12);
    --article-hover: rgba(196,30,58,0.06); --article-glow: rgba(196,30,58,0.04);
}
/* ===== Theme: 轻奢金 ===== */
[data-theme="luxury"] {
    --bg: #FDF8EE; --bg2: #F8F0E0;
    --surface: rgba(184,134,11,0.03); --surface2: rgba(184,134,11,0.06);
    --border: rgba(184,134,11,0.1); --border2: rgba(184,134,11,0.18);
    --accent: #B8860B; --accent2: #D4A017;
    --cyan: #8B6914; --cyan2: #705610;
    --grad: linear-gradient(135deg, #B8860B, #D4A017, #E8C250);
    --grad2: linear-gradient(135deg, #8B6914, #B8860B);
    --text: #2A2010; --text2: #6B5A3A; --text3: #A09070;
    --article-bg: #f0e8d4; --article-card: #fffdf5; --article-border: rgba(184,134,11,0.14);
    --article-hover: rgba(184,134,11,0.07); --article-glow: rgba(184,134,11,0.05);
}
html { scroll-behavior: smooth; font-size: 16px; touch-action: manipulation; }
body { font-family: var(--sans); color: var(--text); background: var(--bg); line-height: 1.7; overflow-x: hidden; transition: background .5s, color .5s; touch-action: manipulation; font-style: normal; }
*, *::before, *::after { font-style: normal !important; }
a { text-decoration: none; color: inherit; transition: color .3s; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Navbar ===== */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background: rgba(8,12,24,0.75); backdrop-filter: blur(28px) saturate(1.5);
    transition: all .4s;
}
.navbar {
    background: rgba(255,255,255,0.85); backdrop-filter: blur(28px) saturate(1.5);
    box-shadow: 0 1px 12px rgba(0,0,0,0.04);
}
[data-theme="dark"] .navbar {
    background: rgba(8,12,24,0.75); box-shadow: none;
}
[data-theme="clean"] .navbar { background: rgba(255,245,245,0.9); box-shadow: 0 1px 12px rgba(196,30,58,0.05); }
[data-theme="luxury"] .navbar { background: rgba(253,248,238,0.9); box-shadow: 0 1px 12px rgba(184,134,11,0.05); }
.navbar.scrolled { background: rgba(255,255,255,0.96); box-shadow: 0 1px 20px rgba(0,0,0,0.06); }
[data-theme="dark"] .navbar.scrolled { background: rgba(8,12,24,0.95); box-shadow: none; }
[data-theme="clean"] .navbar.scrolled { background: rgba(255,245,245,0.98); box-shadow: 0 1px 20px rgba(196,30,58,0.08); }
[data-theme="luxury"] .navbar.scrolled { background: rgba(253,248,238,0.98); box-shadow: 0 1px 20px rgba(184,134,11,0.08); }
.nav-glow {
    position: absolute; bottom: 0; left: 0; width: 100%; height: 1px;
    background: var(--grad);
}
.nav-inner {max-width: 1200px;margin: 0 auto;padding: 0 15px;display: flex;align-items: center;height: 68px;}
.nav-logo { display: flex; align-items: center; gap: 0; flex-shrink: 0; }
.logo-icon-font {
    font-size: 28px;
    color: var(--accent);
    line-height: 1;
    transition: color .5s;
    margin-right: 6px;
}
.logo-hb-icon {
    font-size: 80px;
    color: var(--text);
    
    transition: color .5s;
    margin-top: 6px;
    margin-left: -12px;
}
.logo-sup {
    font-size: 11px; color: var(--text); vertical-align: super; margin: 0 1px; transition: color .5s;
}
.logo-cn {
    font-family: var(--sans);
    font-size: 22px;
    font-weight: 300;
    color: var(--text);
    letter-spacing: 2px;
    transition: color .5s;
    white-space: nowrap;
    margin-left: -10px;
    margin-top: -5px;
}
.logo-en {
    font-family: var(--sans);
    font-size: 10px;
    font-weight: 400;
    color: var(--text);
    letter-spacing: 3px;
    text-transform: uppercase;
    transition: color .5s;
    white-space: nowrap;
    margin-left: 8px;
}
.nav-links { display: flex; gap: 6px; margin-left: 48px; }
.nav-links a {
    font-size: 14px; color: var(--text2); position: relative; padding: 8px 16px;
    transition: all .3s; font-weight: 500; border-radius: 8px;
}
.nav-links a::after { content:''; position: absolute; bottom: 2px; left: 50%; width: 0; height: 2px; background: var(--grad); transition: all .3s; border-radius: 2px; transform: translateX(-50%); }
.nav-links a:hover { color: var(--text); background: var(--surface); }
.nav-links a.active { color: var(--text); font-weight: 600; }
.nav-links a.active::after { width: 20px; }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.nav-tel {
    display: flex; align-items: center; gap: 6px;
    padding: 6px 16px; border-radius: 20px;
    background: var(--surface2); border: 1px solid var(--border2);
    color: var(--cyan); font-size: 14px; font-weight: 600; transition: all .3s;
}
.nav-tel:hover { background: var(--surface); border-color: var(--accent); }
.nav-divider { width: 1px; height: 20px; background: var(--border2); }
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
    margin-left: auto;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text2);
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* --- White theme: default clean --- */
.nav-glow { opacity: 0.3; }
.navbar.scrolled .nav-glow { opacity: 0.5; }
.logo-cn { color: #C41E3A; }
.logo-hb-icon { color: #C41E3A; }
.logo-sup { color: #C41E3A; }
.logo-en { color: #C41E3A; }

/* White theme: red+blue icon overrides */
.adv-icon svg { stroke: #3B82F6; }
.contact-icon svg { stroke: #3B82F6; }
.product-card:nth-child(odd) .product-icon svg { stroke: #C41E3A; }
.product-card:nth-child(even) .product-icon svg { stroke: #ffffff; }
.product-card:nth-child(even) .product-img { background: linear-gradient(135deg, #3B82F6, #60A5FA) !important; }
.product-card:nth-child(odd) .product-img { background: linear-gradient(135deg, #FFF0F0, #FFE8E8) !important; }
.section-divider .divider-icon svg path { fill: #C41E3A; }
.section-divider.red .divider-icon svg path { fill: #3B82F6; }

/* White theme: about & cases bg overrides */
.about-img { background: linear-gradient(135deg, #C41E3A, #3B82F6) !important; }
.about-img svg { stroke: #ffffff !important; }
.about-img svg text { fill: #ffffff !important; }
/* .case-item:nth-child(2) .case-bg - 已改用图片背景 a3.jpg */
/* .case-item:nth-child(4) .case-bg - 已改用图片背景 a5.jpg */
/* .case-item:nth-child(5) .case-bg - 已改用图片背景 a4.jpg */

/* --- Dark theme: vibrant glow --- */
[data-theme="dark"] .nav-glow { opacity: 0.5; }
[data-theme="dark"] .navbar.scrolled .nav-glow { opacity: 0.8; }
[data-theme="dark"] .nav-tel { background: rgba(34,211,238,0.08); border-color: rgba(34,211,238,0.2); }
[data-theme="dark"] .nav-tel:hover { background: rgba(34,211,238,0.15); }
[data-theme="dark"] .logo-cn { color: #E2E8F0; }
[data-theme="dark"] .logo-hb-icon { color: #E2E8F0; }
[data-theme="dark"] .logo-sup { color: #E2E8F0; }
[data-theme="dark"] .logo-en { color: #64748B; }
[data-theme="dark"] .logo-icon-font { color: #818CF8; }
[data-theme="dark"] .adv-icon svg { stroke: #22D3EE; }
[data-theme="dark"] .contact-icon svg { stroke: #22D3EE; }
[data-theme="dark"] .product-card:nth-child(odd) .product-icon svg { stroke: #6366F1; }
[data-theme="dark"] .product-card:nth-child(even) .product-icon svg { stroke: #22D3EE; }
[data-theme="dark"] .product-card:nth-child(even) .product-img { background: linear-gradient(135deg,#6366F1,#3B82F6) !important; }
[data-theme="dark"] .product-card:nth-child(odd) .product-img { background: linear-gradient(135deg,#0D1322,#111827) !important; }
[data-theme="dark"] .section-divider .divider-icon svg path { fill: #6366F1; }
[data-theme="dark"] .section-divider.red .divider-icon svg path { fill: #6366F1; }
[data-theme="dark"] .about-img { background: linear-gradient(135deg,#6366F1,#3B82F6) !important; }
/* [data-theme="dark"] .case-item:nth-child(4) .case-bg - 已改用图片背景 a5.jpg */

/* --- Chinese Red: red glow --- */
[data-theme="clean"] .nav-glow { opacity: 0.35; }
[data-theme="clean"] .navbar.scrolled .nav-glow { opacity: 0.65; }
[data-theme="clean"] .nav-tel { background: rgba(196,30,58,0.06); border-color: rgba(196,30,58,0.15); color: #C41E3A; }
[data-theme="clean"] .nav-tel:hover { background: rgba(196,30,58,0.12); border-color: rgba(196,30,58,0.3); }
[data-theme="clean"] .logo-cn { background: linear-gradient(135deg, #C41E3A, #8B0000); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
[data-theme="clean"] .logo-hb-icon { color: #C41E3A; }
[data-theme="clean"] .logo-sup { color: #C41E3A; }
[data-theme="clean"] .logo-en { color: #B07070; }
[data-theme="clean"] .adv-icon svg { stroke: #C41E3A; }
[data-theme="clean"] .contact-icon svg { stroke: #C41E3A; }
[data-theme="clean"] .product-card:nth-child(odd) .product-icon svg { stroke: #C41E3A; }
[data-theme="clean"] .product-card:nth-child(even) .product-icon svg { stroke: #ffffff; }
[data-theme="clean"] .product-card:nth-child(even) .product-img { background: linear-gradient(135deg, #C41E3A, #E03A2E) !important; }
[data-theme="clean"] .product-card:nth-child(odd) .product-img { background: linear-gradient(135deg, #FFF0F0, #FFE0E0) !important; }
[data-theme="clean"] .section-divider .divider-icon svg path { fill: #C41E3A; }
[data-theme="clean"] .section-divider.red .divider-icon svg path { fill: #D49A0E; }
[data-theme="clean"] .about-img { background: linear-gradient(135deg,#C41E3A,#A01830) !important; }
/* [data-theme="clean"] .case-item:nth-child(4) .case-bg - 已改用图片背景 a5.jpg */

/* --- Light Gold: warm gold glow --- */
[data-theme="luxury"] .nav-glow { opacity: 0.3; }
[data-theme="luxury"] .navbar.scrolled .nav-glow { opacity: 0.6; }
[data-theme="luxury"] .nav-tel { background: rgba(184,134,11,0.06); border-color: rgba(184,134,11,0.15); color: #8B6914; }
[data-theme="luxury"] .nav-tel:hover { background: rgba(184,134,11,0.12); border-color: rgba(184,134,11,0.3); }
[data-theme="luxury"] .logo-cn { background: linear-gradient(135deg, #8B6914, #B8860B); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
[data-theme="luxury"] .logo-hb-icon { color: #B8860B; }
[data-theme="luxury"] .logo-sup { color: #B8860B; }
[data-theme="luxury"] .logo-en { color: #A09070; }
[data-theme="luxury"] .logo-icon-font { color: #B8860B; }
[data-theme="luxury"] .adv-icon svg { stroke: #B8860B; }
[data-theme="luxury"] .contact-icon svg { stroke: #B8860B; }
[data-theme="luxury"] .product-card:nth-child(odd) .product-icon svg { stroke: #B8860B; }
[data-theme="luxury"] .product-card:nth-child(even) .product-icon svg { stroke: #ffffff; }
[data-theme="luxury"] .product-card:nth-child(even) .product-img { background: linear-gradient(135deg, #B8860B, #D4A017) !important; }
[data-theme="luxury"] .product-card:nth-child(odd) .product-img { background: linear-gradient(135deg, #FDF8EE, #F8F0E0) !important; }
[data-theme="luxury"] .section-divider .divider-icon svg path { fill: #B8860B; }
[data-theme="luxury"] .section-divider.red .divider-icon svg path { fill: #D4A017; }
[data-theme="luxury"] .about-img { background: linear-gradient(135deg,#8B6914,#B8860B) !important; }
/* [data-theme="luxury"] .case-item:nth-child(4) .case-bg - 已改用图片背景 a5.jpg */


/* ===== Mobile Menu ===== */

/* 桌面端强制隐藏移动菜单 */
@media (min-width: 769px) {
    .mobile-menu {
        display: none !important;
    }
}

/* 移动端菜单容器 - 统一所有主题样式 */
.mobile-menu {
    position: fixed;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(24px);
    z-index: 1001;
    padding: 24px;
    display: none;
    flex-direction: column;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    animation: menuSlideDown 0.3s ease-out;
}

/* 菜单展开动画 */
@keyframes menuSlideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 深色主题 - 保持白色菜单（与桌面端导航栏一致） */
[data-theme="dark"] .mobile-menu {
    background: rgba(255, 255, 255, 0.98);
}

/* 中国红主题 */
[data-theme="clean"] .mobile-menu {
    background: rgba(255, 245, 245, 0.98);
}

/* 轻奢金主题 */
[data-theme="luxury"] .mobile-menu {
    background: rgba(253, 248, 238, 0.98);
}

/* 菜单链接样式 - 统一桌面端和移动端 */
.mobile-menu a {
    font-size: 18px;
    color: var(--text2);
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

/* 链接 hover 效果 - 与桌面端一致 */
.mobile-menu a:hover {
    color: var(--text);
    padding-left: 10px;
    background: var(--surface);
}

/* 链接点击效果 */
.mobile-menu a:active {
    background: rgba(0, 0, 0, 0.05);
}

/* 电话号码样式 - 统一样式 */
.mobile-tel {
    color: var(--cyan);
    font-size: 22px;
    font-weight: 700;
    font-family: var(--sans);
    margin-top: 8px;
    padding-top: 16px;
    border-top: 2px solid var(--border);
}

/* ===== Product Detail Modal ===== */
.product-detail-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 10000;
    display: none; align-items: center; justify-content: center; padding: 20px;
}
.product-detail-overlay.active { display: flex; }
.product-detail-modal {
    background: #fff; border-radius: 16px; max-width: 500px; width: 100%;
    max-height: 90vh; overflow-y: auto; position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.product-detail-close {
    position: absolute; top: 16px; right: 16px; width: 36px; height: 36px;
    border: none; background: rgba(0,0,0,0.05); border-radius: 50%;
    font-size: 24px; color: #666; cursor: pointer; z-index: 10;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.3s;
}
.product-detail-close:hover { background: rgba(0,0,0,0.1); }
.product-detail-header {
    display: flex; align-items: center; gap: 12px; padding: 20px 24px;
    border-bottom: 1px solid #f0f0f0;
}
.product-detail-brand { font-size: 14px; color: #C41E3A; letter-spacing: 2px; }
.product-detail-image {
    width: 100%; height: 280px; background: #f5f5f5;
    display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.product-detail-image img { width: 100%; height: 100%; object-fit: cover; }
.product-detail-content { padding: 24px; }
.product-detail-content h2 { font-size: 24px; color: #C41E3A; margin: 0 0 12px 0; }
.product-detail-price { font-size: 20px; color: #C41E3A; font-weight: 700; }
.product-detail-desc { font-size: 15px; color: #666; line-height: 1.8; margin: 16px 0; }
.product-detail-tags { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0; }
.product-detail-tags span {
    padding: 6px 14px; background: #FFF8F0; color: #B8860B;
    border-radius: 6px; font-size: 13px; border: 1px solid #F0E6D0;
}
.product-detail-footer {
    display: flex; align-items: center; justify-content: space-between;
    margin-top: 20px; padding-top: 16px; border-top: 1px solid #f0f0f0;
}
.product-detail-consult { font-size: 13px; color: #999; }
.product-detail-btn {
    padding: 10px 28px; background: #B8860B; color: #fff; border: none;
    border-radius: 8px; font-size: 15px; cursor: pointer; transition: background 0.3s;
}
.product-detail-btn:hover { background: #9A7209; }

/* ===== Hero ===== */
.hero { position: relative; height: 100vh; min-height: 700px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.hero-bg {
    position: absolute; inset: 0;
}
.hero-slide {
    position: absolute; inset: 0;
    background-size: 100% 100%;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: all 800ms cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}
.hero-slide.active {
    opacity: 1;
}

/* 幻灯片过渡效果 */
.hero-slide.effect-fade { opacity: 0; }
.hero-slide.effect-fade.active { opacity: 1; }
.hero-slide.exit-fade { opacity: 0; }

.hero-slide.effect-slideLeft { opacity: 0; transform: translateX(-100%); }
.hero-slide.effect-slideLeft.active { opacity: 1; transform: translateX(0); }
.hero-slide.exit-slideLeft { opacity: 0; transform: translateX(100%); }

.hero-slide.effect-slideRight { opacity: 0; transform: translateX(100%); }
.hero-slide.effect-slideRight.active { opacity: 1; transform: translateX(0); }
.hero-slide.exit-slideRight { opacity: 0; transform: translateX(-100%); }

.hero-slide.effect-slideUp { opacity: 0; transform: translateY(100%); }
.hero-slide.effect-slideUp.active { opacity: 1; transform: translateY(0); }
.hero-slide.exit-slideUp { opacity: 0; transform: translateY(-100%); }

.hero-slide.effect-slideDown { opacity: 0; transform: translateY(-100%); }
.hero-slide.effect-slideDown.active { opacity: 1; transform: translateY(0); }
.hero-slide.exit-slideDown { opacity: 0; transform: translateY(100%); }

.hero-slide.effect-zoomIn { opacity: 0; transform: scale(0.5); }
.hero-slide.effect-zoomIn.active { opacity: 1; transform: scale(1); }
.hero-slide.exit-zoomIn { opacity: 0; transform: scale(1.5); }

.hero-slide.effect-zoomOut { opacity: 0; transform: scale(1.5); }
.hero-slide.effect-zoomOut.active { opacity: 1; transform: scale(1); }
.hero-slide.exit-zoomOut { opacity: 0; transform: scale(0.5); }

.hero-slide.effect-blurIn { opacity: 0; filter: blur(20px); }
.hero-slide.effect-blurIn.active { opacity: 1; filter: blur(0); }
.hero-slide.exit-blurIn { opacity: 0; filter: blur(20px); }
.hero-bg-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.12) 0%, rgba(0,0,0,0.08) 40%, rgba(0,0,0,0.04) 70%, rgba(255,255,255,0.85) 100%);
    z-index: 1;
}
[data-theme="dark"] .hero-bg-overlay {
    background: linear-gradient(to bottom, rgba(8,12,24,0.6) 0%, rgba(8,12,24,0.45) 50%, rgba(8,12,24,0.7) 100%);
}
[data-theme="clean"] .hero-bg-overlay {
    background: linear-gradient(to bottom, rgba(60,10,10,0.3) 0%, rgba(60,10,10,0.2) 40%, rgba(60,10,10,0.1) 70%, rgba(255,245,245,0.9) 100%);
}
[data-theme="luxury"] .hero-bg-overlay {
    background: linear-gradient(to bottom, rgba(40,30,10,0.3) 0%, rgba(40,30,10,0.2) 40%, rgba(40,30,10,0.1) 70%, rgba(253,248,238,0.9) 100%);
}
.hero-particles { position: absolute; inset: 0; z-index: 2; }
.hero-particles .particle {
    position: absolute; width: 4px; height: 4px; background: var(--cyan); border-radius: 50%;
    opacity: 0; animation: particleFloat 6s infinite;
    box-shadow: 0 0 10px rgba(37,99,235,0.8), 0 0 20px rgba(37,99,235,0.3);
}
@keyframes particleFloat {
    0% { opacity: 0; transform: translateY(0) scale(0); }
    20% { opacity: 1; }
    100% { opacity: 0; transform: translateY(-500px) scale(1.5); }
}
.hero-content { position: relative; text-align: center; padding: 0 24px; }
.hero-deco-line { display: flex; align-items: center; justify-content: center; gap: 14px; margin-bottom: 20px; }
.deco-line { display: block; width: 80px; height: 1px; background: linear-gradient(90deg, transparent, var(--accent), var(--cyan), transparent); }
.deco-diamond { display: block; width: 8px; height: 8px; background: var(--cyan); transform: rotate(45deg); box-shadow: 0 0 12px rgba(37,99,235,0.6); }
.hero-sub {
    display: inline-block;
    font-family: var(--sans);
    font-size: 22px;
    letter-spacing: 12px;
    color: #fff;
    font-weight: 700;
    margin-bottom: 28px;
    background: rgba(196,30,58,0.85);
    padding: 10px 28px;
    border-radius: 8px;
    backdrop-filter: blur(8px);
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}
.hero-title { font-family: var(--sans); font-size: clamp(56px, 10vw, 110px); font-weight: 900; color: #fff; line-height: 1.15; margin-bottom: 32px; letter-spacing: 8px; text-shadow: 0 3px 20px rgba(0,0,0,0.4), 0 1px 6px rgba(0,0,0,0.3); }
.hero-title span { background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; filter: drop-shadow(0 2px 12px rgba(0,0,0,0.3)); }

/* Slogan Carousel */
.hero-slogan-carousel {
    position: relative;
    height: clamp(80px, 14vw, 180px);
    overflow: visible;
    margin-bottom: 16px;
}
.slogan-item {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100vw;
    max-width: none;
    text-align: center;
    font-size: clamp(36px, 7vw, 80px);
    font-weight: 900;
   
    letter-spacing: 6px;
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    white-space: nowrap;
    background: none !important;
    -webkit-text-fill-color: #fff !important;
    -webkit-background-clip: border-box !important;
    background-clip: border-box !important;
    padding: 30px 30px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.6), 0 1px 3px rgba(0,0,0,0.4);
    box-sizing: border-box;
}
.slogan-item.active {
    opacity: 1;
    pointer-events: auto;
}

/* 动画效果类 */
.slogan-item.effect-fade { transform: translate(-50%, -50%) scale(1); }
.slogan-item.effect-fade.active { transform: translate(-50%, -50%) scale(1); }

.slogan-item.effect-slideLeft { transform: translate(-150%, -50%); opacity: 0; }
.slogan-item.effect-slideLeft.active { transform: translate(-50%, -50%); opacity: 1; }

.slogan-item.effect-slideRight { transform: translate(50%, -50%); opacity: 0; }
.slogan-item.effect-slideRight.active { transform: translate(-50%, -50%); opacity: 1; }

.slogan-item.effect-slideUp { transform: translate(-50%, -50%) translateY(40px); opacity: 0; }
.slogan-item.effect-slideUp.active { transform: translate(-50%, -50%) translateY(0); opacity: 1; }

.slogan-item.effect-slideDown { transform: translate(-50%, -50%) translateY(-40px); opacity: 0; }
.slogan-item.effect-slideDown.active { transform: translate(-50%, -50%) translateY(0); opacity: 1; }

.slogan-item.effect-zoomIn { transform: translate(-50%, -50%) scale(0.5); opacity: 0; }
.slogan-item.effect-zoomIn.active { transform: translate(-50%, -50%) scale(1); opacity: 1; }

.slogan-item.effect-zoomOut { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
.slogan-item.effect-zoomOut.active { transform: translate(-50%, -50%) scale(1); opacity: 1; }

.slogan-item.effect-rotateIn { transform: translate(-50%, -50%) rotate(-15deg) scale(0.8); opacity: 0; }
.slogan-item.effect-rotateIn.active { transform: translate(-50%, -50%) rotate(0) scale(1); opacity: 1; }

.slogan-item.effect-blurIn { filter: blur(10px); transform: translate(-50%, -50%) scale(1.1); opacity: 0; }
.slogan-item.effect-blurIn.active { filter: blur(0); transform: translate(-50%, -50%) scale(1); opacity: 1; }

/* 打字效果 */
.slogan-item.effect-typing { opacity: 1; }
.slogan-item.effect-typing .typing-text {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 3px solid #fff;
    width: 0;
    animation: typing 1.5s steps(20, end) forwards, blink-caret 0.75s step-end 6;
}
@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}
@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: #fff; }
}
.hero-price-line { display: flex; align-items: baseline; justify-content: center; gap: 4px; filter: drop-shadow(0 3px 20px rgba(0,0,0,0.3)); }
.hero-price-line .price-prefix { font-size: clamp(28px, 5vw, 52px); font-weight: 700; letter-spacing: 4px; -webkit-text-fill-color: #fff !important; color: #fff !important; background: none !important; -webkit-background-clip: border-box !important; background-clip: border-box !important; text-shadow: 0 2px 10px rgba(0,0,0,0.4), 0 1px 4px rgba(0,0,0,0.3); }
.price-num {
    display: inline-flex; align-items: baseline; justify-content: center;
    font-size: 90px; font-weight: 900; line-height: 1;
    letter-spacing: -2px;
    background: none !important; -webkit-text-fill-color: initial !important; -webkit-background-clip: border-box !important; background-clip: border-box !important;
}
.price-num .digit {
    display: inline-block;
    color: #C41E3A !important;
    -webkit-text-fill-color: #C41E3A !important;
    background: none !important;
    -webkit-background-clip: border-box !important;
    background-clip: border-box !important;
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}
.hero-price-line .price-suffix { font-size: clamp(28px, 5vw, 52px); font-weight: 700; letter-spacing: 4px; -webkit-text-fill-color: #fff !important; color: #fff !important; background: none !important; -webkit-background-clip: border-box !important; background-clip: border-box !important; text-shadow: 0 2px 10px rgba(0,0,0,0.4), 0 1px 4px rgba(0,0,0,0.3); }
.hero-tags { display: flex; gap: 16px; justify-content: center; flex-wrap: nowrap; margin-bottom: 28px; }
.hero-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    flex: 1;
    padding: clamp(8px, 1.2vw, 12px) clamp(16px, 2.5vw, 26px);
    border-radius: 40px;
    background: #a0183000;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.3);
    color: #95ec69;
    font-size: clamp(13px, 1.6vw, 16px);
    font-weight: 600;
    letter-spacing: 1px;
    box-shadow: 0 2px 16px rgba(0,0,0,0.12);
    transition: all .3s;
    white-space: nowrap;
}
.hero-tag:hover { background: rgba(255,255,255,1); border-color: rgba(196,30,58,0.3); box-shadow: 0 4px 20px rgba(196,30,58,0.12); transform: translateY(-2px); }
.hero-tag .tag-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    font-size: 16px;
    flex-shrink: 0;
    color: #95ec69;
}
[data-theme="dark"] .hero-tag { background: rgba(30,40,70,0.85); border-color: rgba(99,102,241,0.25); color: #E2E8F0; }
[data-theme="dark"] .hero-tag:hover { background: rgba(40,50,85,0.95); border-color: rgba(99,102,241,0.45); box-shadow: 0 4px 20px rgba(99,102,241,0.2); }
[data-theme="dark"] .hero-tag .tag-icon { color: #6366F1; }
[data-theme="clean"] .hero-tag { background: rgba(255,255,255,0.92); border-color: rgba(196,30,58,0.2); color: #2D1010; }
[data-theme="clean"] .hero-tag:hover { background: rgba(255,255,255,1); border-color: rgba(196,30,58,0.4); box-shadow: 0 4px 20px rgba(196,30,58,0.15); }
[data-theme="clean"] .hero-tag .tag-icon { color: #C41E3A; }
[data-theme="luxury"] .hero-tag { background: rgba(255,252,245,0.92); border-color: rgba(184,134,11,0.2); color: #2A2010; }
[data-theme="luxury"] .hero-tag:hover { background: rgba(255,252,245,1); border-color: rgba(184,134,11,0.4); box-shadow: 0 4px 20px rgba(184,134,11,0.15); }
[data-theme="luxury"] .hero-tag .tag-icon { color: #B8860B; }
.hero-desc { font-size: 19px; color: #fff; max-width: 620px; margin: 0 auto 44px; line-height: 2; font-weight: 400; text-shadow: 0 2px 12px rgba(0,0,0,0.4), 0 1px 4px rgba(0,0,0,0.3); }
.hero-btns { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
    padding: 16px 48px; background: var(--grad2); color: var(--white);
    font-weight: 700; font-size: 17px; border-radius: 12px;
    transition: all .3s; box-shadow: 0 4px 24px rgba(59,130,246,0.4); letter-spacing: 1px;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 40px rgba(59,130,246,0.6); }
.btn-outline {
    padding: 16px 48px;
    border: 1px solid #a01830;
    color: var(--text);
    font-weight: 500;
    font-size: 17px;
    border-radius: 12px;
    transition: all .3s;
    letter-spacing: 1px;
}
.btn-outline:hover { border-color: var(--accent); background: var(--surface2); transform: translateY(-3px); }
.hero-scroll { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; }
.hero-scroll span { font-size: 12px; color: var(--text3); letter-spacing: 4px; }
.scroll-line { width: 1px; height: 50px; background: linear-gradient(to bottom, var(--accent), transparent); animation: scrollPulse 2s infinite; }
@keyframes scrollPulse { 0%,100% { opacity: .3; } 50% { opacity: 1; } }
.fade-up { opacity: 0; transform: translateY(30px); animation: fadeUp .8s forwards; }
.fade-up:nth-child(1) { animation-delay: .2s; } .fade-up:nth-child(2) { animation-delay: .4s; }
.fade-up:nth-child(3) { animation-delay: .6s; } .fade-up:nth-child(4) { animation-delay: .8s; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }

/* ===== Stats Bar ===== */
.stats-bar { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stats-bar .container { display: flex; justify-content: space-around; align-items: center; padding: 44px 24px; }
.stat-item { text-align: center; }
.stat-num { font-family: var(--sans); font-size: 60px; font-weight: 900; background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; }
.stat-unit { font-size: 24px; font-weight: 700; background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-item p { font-size: 16px; color: var(--text2); margin-top: 8px; font-weight: 400; letter-spacing: 2px; }
.stat-divider { width: 1px; height: 60px; background: linear-gradient(to bottom, transparent, var(--border2), transparent); }

/* ===== Section Divider ===== */
.section-divider { display: flex; align-items: center; justify-content: center; gap: 16px; padding: 20px 0; }
.divider-line { display: block; width: 100px; height: 1px; background: linear-gradient(90deg, transparent, var(--border2), transparent); }
.divider-icon .iconfont { font-size: 28px; color: #C41E3A; }

/* ===== Section Common ===== */
.section { padding: 110px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag { font-size: 13px; letter-spacing: 6px; color: var(--cyan); text-transform: uppercase; display: block; margin-bottom: 16px; font-weight: 600; }
.section-title { font-family: var(--sans); font-size: 46px; font-weight: 900; color: var(--text); margin-bottom: 16px; letter-spacing: 4px; }
.section-desc { font-size: 18px; color: var(--text2); line-height: 1.9; font-weight: 300; }
.header-deco { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 20px; }
.header-deco span { display: block; width: 40px; height: 1px; border-radius: 1px; }
.header-deco span:first-child { background: linear-gradient(90deg, transparent, var(--accent)); }
.header-deco span:last-child { background: linear-gradient(90deg, var(--cyan), transparent); }
.header-deco i { display: block; width: 6px; height: 6px; background: var(--cyan); transform: rotate(45deg); box-shadow: 0 0 8px rgba(37,99,235,0.5); }
.header-deco.left { justify-content: flex-start; }

/* ===== Products ===== */
.products { background: var(--bg2); position: relative; overflow: hidden; }
.products::before {
    content:''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 20% 30%, rgba(99,102,241,0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 70%, rgba(196,30,58,0.04) 0%, transparent 50%);
    pointer-events: none;
}
.products .container { position: relative; z-index: 1; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
    background: var(--bg); border-radius: 16px;
    border: 1px solid var(--border); overflow: hidden; transition: all .4s; cursor: pointer;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.product-card:hover { transform: translateY(-8px); border-color: var(--border2); box-shadow: 0 20px 60px rgba(99,102,241,0.15); }
.product-img { display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.product-icon { transition: transform .4s; }
.product-card:hover .product-icon { transform: scale(1.1); }
.product-badge {
    position: absolute; top: 16px; right: 16px; padding: 6px 16px;
    background: var(--grad2); color: var(--white); font-size: 13px; font-weight: 600; border-radius: 8px;
}
.product-badge.new { background: linear-gradient(135deg, var(--cyan2), var(--cyan)); color: var(--bg); }
.product-info { padding: 20px; }
.product-info h3 { font-family: var(--sans); font-size: 20px; color: var(--text); margin-bottom: 8px; font-weight: 700; letter-spacing: 1px; display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.product-price { font-family: var(--sans); font-size: 15px; color: #ef4444; font-weight: 700; white-space: nowrap; letter-spacing: 0; }
.product-info p { font-size: 13px; color: var(--text3); line-height: 1.7; margin-bottom: 14px; font-weight: 300; display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.product-tags span { padding: 3px 10px; background: var(--surface2); color: var(--accent); font-size: 12px; border-radius: 6px; border: 1px solid var(--border); font-weight: 500; }
.product-consult-row { display: flex; align-items: center; justify-content: space-between; margin-top: 12px; gap: 8px; }
.product-consult-count { display: flex; align-items: center; gap: 4px; font-size: 12px; color: var(--text3); font-weight: 400; margin: 0; }
.product-consult-count i { font-size: 13px; color: var(--accent); }
.product-consult-btn {
    flex-shrink: 0; padding: 6px 16px; border: none; border-radius: 8px;
    background: var(--grad2); color: #fff; font-size: 12px; font-weight: 600;
    cursor: pointer; transition: all .3s; letter-spacing: 0; white-space: nowrap;
}
.product-consult-btn:hover { opacity: .9; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(99,102,241,0.3); }

/* ===== Advantages ===== */
.advantages { background: var(--bg); position: relative; overflow: hidden; }
.advantages::before {
    content:''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(59,130,246,0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(196,30,58,0.04) 0%, transparent 60%);
    pointer-events: none;
}
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; position: relative; }
.adv-card {
    background: var(--surface); border-radius: 16px; padding: 40px 32px;
    border: 1px solid var(--border); transition: all .4s; text-align: center;
}
.adv-card:hover { background: var(--surface2); border-color: var(--border2); transform: translateY(-6px); box-shadow: 0 12px 40px rgba(196,30,58,0.1); }
.adv-icon { margin-bottom: 24px; }
.adv-icon .iconfont { font-size: 48px; }
.adv-card h3 { font-family: var(--sans); font-size: 24px; color: var(--text); margin-bottom: 14px; font-weight: 700; letter-spacing: 1px; }
.adv-card p { font-size: 15px; color: var(--text2); line-height: 1.9; font-weight: 300; }

/* ===== Cases ===== */
.cases { background: var(--bg2); }
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 260px; gap: 16px; }
.case-item { position: relative; border-radius: 16px; overflow: hidden; cursor: pointer; border: 1px solid var(--border); }
.case-item.large { grid-column: span 2; grid-row: span 2; }
.case-bg { position: absolute; inset: 0; transition: transform .6s; }
.case-item:hover .case-bg { transform: scale(1.05); }
.case-content {
    position: absolute; inset: 0; display: flex; flex-direction: column;
    justify-content: flex-end; padding: 28px; z-index: 2;
    background: linear-gradient(to top, rgba(8,12,24,0.9) 0%, transparent 60%);
}
.case-tag { font-size: 12px; color: var(--cyan); letter-spacing: 3px; margin-bottom: 8px; font-weight: 600; }
.case-content h3 { font-family: var(--sans); font-size: 24px; color: var(--white); margin-bottom: 6px; font-weight: 700; }
.case-content p { font-size: 14px; color: rgba(255,255,255,0.7); font-weight: 300; }

/* ===== Articles ===== */
.articles { background: var(--article-bg); position: relative; overflow: hidden; }
.articles::before {
    content:''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 25% 40%, var(--article-glow) 0%, transparent 50%),
                radial-gradient(ellipse at 75% 60%, var(--article-glow) 0%, transparent 50%);
    pointer-events: none;
}
.articles .container { position: relative; z-index: 1; }
.article-list { display: flex; flex-direction: column; gap: 0; }
.article-list-item {
    display: flex; align-items: center; gap: 24px; padding: 24px 0;
    border-bottom: 1px solid var(--article-border); cursor: pointer; transition: all .3s;
    text-decoration: none; color: inherit;
}
.article-list-item:first-child { border-top: 1px solid var(--article-border); }
.article-list-item:hover { background: var(--article-hover); padding-left: 16px; padding-right: 16px; border-radius: 12px; border-color: transparent; }
.article-list-item:hover + .article-list-item { border-top-color: transparent; }
.article-list-date {
    flex-shrink: 0; width: 80px; text-align: center;
}
.article-list-date .day { font-size: 32px; font-weight: 800; color: var(--accent); line-height: 1; font-family: var(--sans); }
.article-list-date .month { font-size: 12px; color: var(--text3); margin-top: 4px; }
.article-list-body { flex: 1; min-width: 0; }
.article-list-body h3 {
    font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 6px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.article-list-body p {
    font-size: 13px; color: var(--text3); line-height: 1.7; margin-bottom: 8px;
    display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2;
    -webkit-box-orient: vertical; overflow: hidden;
}
.article-list-meta { display: flex; align-items: center; gap: 16px; font-size: 12px; color: var(--text3); }
.article-list-meta .tag {
    padding: 2px 8px; background: var(--surface2); color: var(--accent);
    border-radius: 4px; font-weight: 500; border: 1px solid var(--border);
}
.article-list-cover {
    flex-shrink: 0; width: 160px; height: 100px; border-radius: 10px;
    overflow: hidden; background: var(--surface2);
}
.article-list-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-list-cover-default {
    width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--surface2), var(--bg2));
}
.article-list-cover-default .iconfont { font-size: 32px; color: var(--accent); opacity: 0.3; }

/* ===== About ===== */
.about { background: var(--bg); }
.about-wrap { display: flex; gap: 0px; align-items: center; }
.about-left { flex: 1; }
.about-text { margin: 28px 0; }
.about-text p { font-size: 17px; color: var(--text2); line-height: 2.1; margin-bottom: 16px; font-weight: 300; font-style: normal; }
.about-tags { display: flex; gap: 14px; flex-wrap: wrap; }
.about-tags span {padding: 8px 7px;border: 1px solid var(--border2);color: var(--text);font-size: 12px;border-radius: 8px;font-weight: 400;transition: all .3s;width: 30%;text-align: center;}
.about-tags span:hover { border-color: var(--accent); background: var(--surface2); }
.about-right {flex: 0 0 380px;}
.about-title-icon {font-size: 160px;font-weight: 100;line-height: 58px;}
.about-img-box { position: relative; }
.about-img {width: 380px;height: 520px;border-radius: 20px;display: flex;align-items: center;justify-content: center;border: 1px solid var(--border2);box-shadow: 0 20px 60px rgba(0,0,0,0.3);overflow: hidden;margin-top: 88px;}
.about-img video { width: 100%; height: 100%; object-fit: cover; display: block; }
.about-exp {
    position: absolute; bottom: -24px; right: -24px;
    width: 120px; height: 120px; border-radius: 16px;
    background: var(--grad2); display: flex; flex-direction: column; align-items: center; justify-content: center;
    box-shadow: 0 8px 30px rgba(59,130,246,0.4);
}
.exp-num { font-family: var(--sans); font-size: 48px; font-weight: 900; color: var(--white); line-height: 1; }
.exp-text { font-size: 14px; color: rgba(255,255,255,0.85); text-align: center; line-height: 1.4; font-weight: 600; }

/* ===== Contact ===== */
.contact { background: var(--bg2); position: relative; overflow: hidden; }
.contact::before {
    content:''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 20% 80%, rgba(59,130,246,0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(196,30,58,0.04) 0%, transparent 50%);
    pointer-events: none;
}
.contact-wrap { display: flex; gap: 48px; position: relative; }
.contact-info { flex: 1; display: flex; flex-direction: column; gap: 32px; }
.contact-item { display: flex; align-items: flex-start; gap: 18px; }
.contact-icon {
    width: 52px; height: 52px; border-radius: 12px;
    background: var(--surface2); border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.contact-item h4 { font-size: 18px; color: var(--text); margin-bottom: 4px; font-weight: 700; }
.contact-item p { font-size: 16px; color: var(--text2); font-weight: 300; }
.contact-form { flex: 1; display: flex; flex-direction: column; gap: 18px; }
.form-row { display: flex; gap: 18px; }
.form-row input { flex: 1; }
.contact-form input, .contact-form select, .contact-form textarea {
    width: 100%; padding: 16px 20px; background: var(--surface);
    border: 1px solid var(--border2); border-radius: 12px;
    color: var(--text); font-size: 15px; font-family: var(--sans);
    transition: border-color .3s; outline: none;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(59,130,246,0.1); }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: var(--text3); }
.contact-form select { appearance: none; color: var(--text3); }
.contact-form select option { background: var(--bg2); color: var(--text); }
.btn-submit {
    padding: 18px; background: var(--grad2); color: var(--white);
    font-size: 18px; font-weight: 700; border: none;
    border-radius: 12px; cursor: pointer; transition: all .3s; letter-spacing: 2px;
}
.btn-submit:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(59,130,246,0.4); }

/* ===== Footer ===== */
.footer { background: var(--bg); border-top: 1px solid var(--border); }
.footer-top { display: flex; justify-content: space-between; padding: 48px 0; }
.footer-brand { max-width: 380px; }
.footer-logo { display: flex; align-items: center; gap: 0; margin-bottom: 18px;line-height: 35px; }
.footer-logo .logo-icon-font {font-size: 22px;margin-right: 10px;}
.footer-logo .logo-hb-icon { font-size: 60px; }
.footer-logo .logo-sup { font-size: 10px; }
.footer-logo .logo-cn { color: var(--text); font-size: 20px; margin-left: 1px; }
.footer-logo .logo-en { color: var(--text); font-size: 14px; font-weight: 500; margin-left: 6px; }
.footer-brand p { font-size: 15px; color: var(--text3); line-height: 1.8; font-weight: 300; }
.footer-promo { margin-top: 16px; }
.promo-badge {
    display: inline-block; padding: 4px 14px; border-radius: 20px;
    background: linear-gradient(135deg, #C41E3A, #E53E3E); color: #fff;
    font-size: 13px; font-weight: 700; letter-spacing: 2px; margin-bottom: 12px;
    animation: promoPulse 2s ease-in-out infinite;
}
@keyframes promoPulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(196,30,58,0.4); }
    50% { transform: scale(1.05); box-shadow: 0 0 12px 4px rgba(196,30,58,0.2); }
}
.footer-promo p { font-size: 15px; color: var(--text); line-height: 1.8; font-weight: 500; margin: 0; }
.promo-price { font-size: 22px; font-weight: 900; color: #C41E3A; }
.promo-sub { font-size: 13px !important; color: var(--text3) !important; font-weight: 400 !important; margin-top: 4px !important; }
.footer-links { display: flex; gap: 60px; }
.footer-links h4 { font-size: 16px; color: var(--text); margin-bottom: 18px; font-weight: 700; }
.footer-links a { display: block; font-size: 14px; color: var(--text3); margin-bottom: 10px; transition: color .3s; font-weight: 300; }
.footer-links a:hover { color: var(--cyan); }
.footer-qrcode { display: flex; gap: 24px; align-items: flex-start; }
.footer-qrcode > div { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.footer-qrcode img { width: 150px; height: 150px; border-radius: 8px; object-fit: cover; border: 1px solid var(--border); }
.footer-qrcode span { font-size: 12px; color: var(--text3); font-weight: 300; }
.footer-bottom { border-top: 1px solid var(--border); padding: 24px 0; text-align: center; }
.footer-bottom p { font-size: 14px; color: var(--text3); font-weight: 300; }

/* ===== Float Tools ===== */
.float-tools { position: fixed; right: 24px; bottom: 30%; z-index: 999; display: flex; flex-direction: column; gap: 12px; }
.float-btn {
    width: 48px; height: 48px; border-radius: 12px;
    background: var(--surface2); backdrop-filter: blur(10px);
    color: var(--cyan); display: flex; align-items: center; justify-content: center;
    transition: all .3s; border: 1px solid var(--border); cursor: pointer;
}
.float-btn .iconfont { font-size: 22px; }
.float-btn:hover { background: var(--surface2); border-color: var(--accent); transform: scale(1.1); }

/* ===== 在线客服（微信风格） ===== */
.float-chat-btn { position: relative; background: #07C160; color: #fff; border: none; }
.float-chat-btn:hover { transform: scale(1.15); box-shadow: 0 4px 20px rgba(7,193,96,0.4); }
.chat-badge {
    position: absolute; top: -4px; right: -4px; min-width: 18px; height: 18px;
    background: #ef4444; color: #fff; font-size: 11px; font-weight: 700;
    border-radius: 9px; display: flex; align-items: center; justify-content: center; padding: 0 4px;
}
.chat-panel {
    position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 420px; height: 560px;
    background: #fff; border-radius: 16px; overflow: hidden;
    box-shadow: 0 20px 80px rgba(0,0,0,0.25), 0 0 0 1px rgba(0,0,0,0.05);
    z-index: 1000; display: flex; flex-direction: column;
    animation: chatFadeIn .35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes chatFadeIn { from { opacity: 0; transform: translate(-50%, -50%) scale(0.85); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }
/* 头部 */
.chat-header {
    padding: 16px 56px 16px 20px;
    background: linear-gradient(135deg, #07C160 0%, #06AD56 100%);
    position: relative; flex-shrink: 0;
}
.chat-header-info {
    display: flex; align-items: center; gap: 10px;
}
.chat-avatar-icon {
    width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,0.2);
    display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px;
    flex-shrink: 0;
}
.chat-name { font-size: 16px; font-weight: 600; color: #fff; }
.chat-status { font-size: 12px; color: rgba(255,255,255,0.8); display: flex; align-items: center; gap: 4px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: #95EC69; display: inline-block; box-shadow: 0 0 6px rgba(149,236,105,0.6); }
.chat-close {
    position: absolute; top: 14px; right: 14px;
    background: rgba(255,255,255,0.2); border: none; color: #fff; font-size: 16px; cursor: pointer;
    width: 28px; height: 28px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: all .2s;
}
.chat-close:hover { background: rgba(255,255,255,0.4); transform: scale(1.1); }
/* 消息区 */
.chat-body {
    flex: 1; overflow-y: auto; padding: 16px;
    display: flex; flex-direction: column; gap: 16px;
    background: #F5F5F5;
}
.chat-body::-webkit-scrollbar { width: 4px; }
.chat-body::-webkit-scrollbar-thumb { background: #C1C1C1; border-radius: 2px; }
/* 消息行 */
.chat-msg { display: flex; gap: 10px; }
.chat-msg.visitor { flex-direction: row-reverse; }
.chat-msg.admin { flex-direction: row; }
/* 头像 */
.chat-msg-avatar {
    width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px; font-weight: 500;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.chat-msg.visitor .chat-msg-avatar { background: #07C160; }
.chat-msg.admin .chat-msg-avatar { background: #576B95; }
/* 内容列 */
.chat-msg-content { display: flex; flex-direction: column; max-width: calc(100% - 54px); }
.chat-msg.visitor .chat-msg-content { align-items: flex-end; }
.chat-msg.admin .chat-msg-content { align-items: flex-start; }
/* 气泡 */
.chat-bubble {
    padding: 10px 14px; border-radius: 12px; font-size: 14px; line-height: 1.6;
    word-break: break-word; position: relative; min-width: 40px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.chat-msg.visitor .chat-bubble { background: #95EC69; color: #000; }
.chat-msg.admin .chat-bubble { background: #fff; color: #333; }
/* 气泡三角 */
.chat-bubble::before {
    content: ''; position: absolute; top: 12px; width: 0; height: 0;
    border: 6px solid transparent;
}
.chat-msg.visitor .chat-bubble::before {
    right: -10px; border-right: none; border-left-color: #95EC69; border-left-width: 8px;
}
.chat-msg.admin .chat-bubble::before {
    left: -10px; border-left: none; border-right-color: #fff; border-right-width: 8px;
}
/* 时间戳 */
.chat-time { font-size: 11px; color: #999; margin-top: 4px; padding: 0 4px; }
/* 底部输入区 */
.chat-footer {
    background: #fff; border-top: 1px solid #EBEBEB;
    display: flex; flex-direction: column; flex-shrink: 0;
    padding-bottom: env(safe-area-inset-bottom, 0);
}
.chat-input-row {
    display: flex; align-items: center; gap: 8px; padding: 8px 12px 12px;
}
.chat-mode-toggle {
    height: 40px; padding: 0 14px; border-radius: 6px; border: 1px solid #D9D9D9;
    background: #fff; color: #333; cursor: pointer; font-size: 13px;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    transition: background .2s; white-space: nowrap;
}
.chat-mode-toggle:hover { background: #f0f0f0; }
/* 语音模式 */
.chat-footer.voice-mode textarea,
.chat-footer.voice-mode .chat-send-btn,
.chat-footer.voice-mode #chatPlusBtn { display: none; }
.chat-footer.voice-mode .chat-voice-hold { display: flex; }
.chat-footer:not(.voice-mode) .chat-voice-hold { display: none; }
.chat-voice-hold {
    flex: 1; height: 44px; border-radius: 6px; border: 1px solid #D9D9D9;
    background: #fff; color: #333; font-size: 15px; font-weight: 500;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: all .15s; user-select: none; -webkit-user-select: none;
}
.chat-voice-hold.recording { background: #ef4444; color: #fff; border-color: #ef4444; gap: 10px; }
/* 录音声波 */
.chat-voice-waves { display: inline-flex; align-items: center; gap: 3px; height: 18px; }
.chat-voice-waves span {
    display: inline-block; width: 3px; height: 4px; border-radius: 2px;
    background: currentColor; animation: chatWave 0.8s ease-in-out infinite;
}
.chat-voice-waves span:nth-child(1) { animation-delay: 0s; }
.chat-voice-waves span:nth-child(2) { animation-delay: 0.15s; }
.chat-voice-waves span:nth-child(3) { animation-delay: 0.3s; }
.chat-voice-waves span:nth-child(4) { animation-delay: 0.45s; }
.chat-voice-waves span:nth-child(5) { animation-delay: 0.6s; }
@keyframes chatWave { 0%, 100% { height: 4px; } 50% { height: 16px; } }
.chat-voice-timer { font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; }
.chat-footer textarea {
    flex: 1; border: 1px solid #D9D9D9; border-radius: 6px; padding: 8px 14px;
    font-size: 15px; font-family: var(--sans); resize: none; outline: none;
    min-height: 40px; max-height: 80px; line-height: 1.5; background: #fff; color: #333;
    box-sizing: border-box;
}
.chat-footer textarea:focus { border-color: #07C160; }
.chat-send-btn {
    height: 40px; padding: 0 28px; border-radius: 6px; border: 1px solid #D9D9D9;
    background: #fff; color: #333; cursor: pointer; flex-shrink: 0;
    font-size: 14px; font-weight: 500; transition: all .2s;
}
.chat-send-btn:hover { background: #f0f0f0; }
.chat-send-btn.active { background: #07C160; color: #fff; border-color: #07C160; }
.chat-send-btn::after { content: '发送'; }
/* ＋按钮 */
.chat-voice-toggle {
    height: 40px; width: 40px; border-radius: 6px; border: 1px solid #D9D9D9;
    background: #fff; color: #333; cursor: pointer; flex-shrink: 0;
    font-size: 18px; font-weight: 300;
    display: flex; align-items: center; justify-content: center;
    transition: background .2s;
}
.chat-voice-toggle:hover { background: #f0f0f0; }
/* 工具栏 */
.chat-toolbar { display: flex; gap: 8px; padding: 4px 12px 10px; }
.chat-tool-btn {
    width: 42px; height: 42px; border-radius: 8px; border: none;
    background: #fff; color: #666; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; transition: all .2s; box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.chat-tool-btn:hover { background: #E8E8E8; color: #333; }
.chat-tool-btn.recording, .chat-tool-btn.listening { background: #07C160; color: #fff; animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .6; } }
/* 图片消息 */
.chat-img-bubble img {
    max-width: 180px; max-height: 180px; border-radius: 6px; cursor: pointer;
    display: block; object-fit: cover;
}
/* 语音消息 */
.chat-voice-bubble {
    display: flex; align-items: center; padding: 10px 16px;
    background: #95EC69; color: #000; border-radius: 6px;
    cursor: pointer; min-width: 100px; font-size: 13px; gap: 8px;
    position: relative; user-select: none;
}
.chat-voice-bubble::before {
    content: ''; position: absolute; top: 12px; width: 0; height: 0;
    border: 6px solid transparent;
}
.chat-msg.visitor .chat-voice-bubble::before {
    right: -10px; border-right: none; border-left-color: #95EC69; border-left-width: 8px;
}
.chat-msg.admin .chat-voice-bubble::before {
    left: -10px; border-left: none; border-right-color: #fff; border-right-width: 8px;
}
.chat-msg.admin .chat-voice-bubble { background: #fff; color: #333; }
.chat-voice-bubble audio { display: none; }
.chat-voice-play {
    width: 24px; height: 24px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.chat-voice-play.playing { animation: voicePulse 1s infinite; }
@keyframes voicePulse { 0%,100% { opacity: 1; } 50% { opacity: .5; } }
.chat-voice-bars { display: flex; align-items: center; gap: 2px; height: 18px; flex: 1; }
.chat-voice-bars span {
    display: inline-block; width: 2.5px; border-radius: 2px;
    background: currentColor; opacity: .6;
}
.chat-voice-bars span:nth-child(1) { height: 6px; }
.chat-voice-bars span:nth-child(2) { height: 12px; }
.chat-voice-bars span:nth-child(3) { height: 8px; }
.chat-voice-bars span:nth-child(4) { height: 16px; }
.chat-voice-bars span:nth-child(5) { height: 10px; }
.chat-voice-bars span:nth-child(6) { height: 14px; }
.chat-voice-bars span:nth-child(7) { height: 6px; }
.chat-voice-bubble.playing .chat-voice-bars span {
    animation: voiceBarAnim 0.6s ease-in-out infinite alternate; opacity: 1;
}
.chat-voice-bubble.playing .chat-voice-bars span:nth-child(1) { animation-delay: 0s; }
.chat-voice-bubble.playing .chat-voice-bars span:nth-child(2) { animation-delay: 0.1s; }
.chat-voice-bubble.playing .chat-voice-bars span:nth-child(3) { animation-delay: 0.2s; }
.chat-voice-bubble.playing .chat-voice-bars span:nth-child(4) { animation-delay: 0.15s; }
.chat-voice-bubble.playing .chat-voice-bars span:nth-child(5) { animation-delay: 0.25s; }
.chat-voice-bubble.playing .chat-voice-bars span:nth-child(6) { animation-delay: 0.05s; }
.chat-voice-bubble.playing .chat-voice-bars span:nth-child(7) { animation-delay: 0.3s; }
@keyframes voiceBarAnim { 0% { height: 4px; } 100% { height: 18px; } }
.chat-voice-dur { font-size: 12px; opacity: .7; flex-shrink: 0; min-width: 24px; text-align: right; }
.chat-voice-text { font-size: 12px; color: var(--text-sub); margin-top: 4px; padding: 4px 8px; background: rgba(0,0,0,0.04); border-radius: 4px; line-height: 1.5; word-break: break-all; }
.chat-msg.visitor .chat-voice-text { text-align: right; }
.chat-msg.admin .chat-voice-text { text-align: left; }
/* AI语音播放按钮 */
.chat-ai-voice-wrap {
    display: inline-flex; align-items: center; gap: 6px; margin-top: 6px;
}
.chat-ai-voice-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 12px;
    background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(139,92,246,0.1));
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: 16px; cursor: pointer;
    font-size: 12px; color: #6366f1;
    transition: all 0.2s; user-select: none;
}
.chat-ai-voice-btn:hover { background: linear-gradient(135deg, rgba(99,102,241,0.18), rgba(139,92,246,0.18)); }
.chat-ai-voice-btn.playing { background: linear-gradient(135deg, rgba(99,102,241,0.2), rgba(139,92,246,0.2)); }
.chat-ai-voice-btn.playing .ai-voice-icon { animation: voicePulse 1s infinite; }
.ai-voice-icon { font-size: 14px; }
.ai-voice-label { font-size: 12px; }
/* 停止按钮 - 始终显示 */
.chat-ai-stop-btn {
    display: flex; align-items: center; justify-content: center;
    width: 26px; height: 26px; border-radius: 50%;
    background: rgba(239,68,68,0.12); border: 1px solid rgba(239,68,68,0.25);
    color: #ef4444; font-size: 12px; cursor: pointer;
    transition: all 0.2s; flex-shrink: 0; padding: 0;
    line-height: 1;
}
.chat-ai-stop-btn:hover { background: rgba(239,68,68,0.25); transform: scale(1.1); }
.chat-ai-voice-wrap.audio-active .chat-ai-stop-btn { display: flex; }
/* 遮罩 */
.chat-mask {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5); z-index: 999;
    backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
    animation: chatMaskIn .25s ease;
}
@keyframes chatMaskIn { from { opacity: 0; } to { opacity: 1; } }
/* 移动端 */
@media (max-width: 768px) {
    .chat-panel {
        top: auto; right: 0; left: 0; bottom: 0; transform: none;
        width: 100%; height: 100vh; border-radius: 16px 16px 0 0;
        animation: chatSlideBottom .3s ease;
    }
    @keyframes chatSlideBottom {
        from { transform: translateY(100%); } to { transform: translateY(0); }
    }
}

/* ===== Theme Switcher ===== */
.theme-switch {
    display: flex; align-items: center; gap: 6px;
}
.theme-dot {
    width: 16px; height: 16px; border-radius: 50%; cursor: pointer;
    border: 2px solid transparent; transition: all .3s;
}
.theme-dot:hover { transform: scale(1.3); }
.theme-dot.active { border-color: var(--text); box-shadow: 0 0 6px rgba(255,255,255,0.15); }
.theme-dot[data-t="white"] { background: linear-gradient(135deg, #C41E3A, #3B82F6); border: none; }
.theme-dot[data-t="dark"] { background: linear-gradient(135deg, #6366F1, #22D3EE); }
.theme-dot[data-t="clean"] { background: linear-gradient(135deg, #C41E3A, #E03A2E); }
.theme-dot[data-t="luxury"] { background: linear-gradient(135deg, #B8860B, #E8C250); }

/* ===== Scroll Animations ===== */
.reveal { opacity: 0; transform: translateY(40px); transition: all .8s cubic-bezier(.25,.46,.45,.94); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .product-grid, .adv-grid { grid-template-columns: repeat(2, 1fr); }
    .article-list-cover { width: 120px; height: 80px; }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .case-item.large { grid-column: span 2; }
    .about-wrap { flex-direction: column; }
    .about-right { flex: none; width: 100%; }
    .about-img { width: 100%; }
    .contact-wrap { flex-direction: column; }
}
@media (max-width: 768px) {
    .nav-links, .nav-right { display: none !important; }
    .nav-toggle { display: flex !important; }
    
    /* 移动端菜单优化 - 统一所有主题 */
    .mobile-menu {
        top: 68px;
        padding: 20px 24px;
        max-height: calc(100vh - 68px);
        overflow-y: auto;
    }
    
    .mobile-menu a {
        font-size: 16px;
        padding: 14px 0;
        /* 保持与桌面端一致的 hover 效果 */
    }
    
    .mobile-menu a:hover {
        color: var(--text);
        background: var(--surface);
    }
    
    .mobile-tel {
        font-size: 20px;
        margin-top: 12px;
        padding-top: 12px;
    }
    
    .hero-title { font-size: 42px; letter-spacing: 2px; }
    .hero-slogan-carousel { height: 60px; }
    .slogan-item { font-size: 28px; letter-spacing: 3px; white-space: normal; padding: 10px 16px; }
    .price-num { font-size: 48px; }
    .hero-sub { font-size: 14px; letter-spacing: 4px; }
    .hero-desc { font-size: 15px; }
    .hero-tags { gap: 10px; }
    .hero-tag { padding: 8px 16px; font-size: 13px; }
    .hero-btns { gap: 12px; }
    .btn-primary {
        padding: 8px 28px;
        font-size: 15px;
        border-radius: 40px;
        box-shadow: 0 4px 20px rgba(59,130,246,0.35);
        letter-spacing: 1px;
        height: 40px;
    }
    .btn-outline {
        padding: 6px 28px;
        font-size: 15px;
        border-radius: 40px;
        border-width: 1.5px;
        letter-spacing: 1px;
        height: 40px;
    }
    .stats-bar .container { flex-wrap: wrap; gap: 20px; }
    .stat-item { flex: 0 0 40%; }
    .stat-num { font-size: 40px; }
    .stat-divider { display: none; }
    .section { padding: 70px 0; }
    .section-title { font-size: 34px; letter-spacing: 2px; }
    .product-grid, .adv-grid, .case-grid { grid-template-columns: 1fr; }
    .article-list-item { gap: 16px; }
        .article-list-cover { width: 100px; height: 70px; }
        .article-list-date { width: 60px; }
        .article-list-date .day { font-size: 24px; }
    .product-info h3 { font-size: 18px; }
    .product-info p { font-size: 13px; }
    .case-item.large { grid-column: span 1; grid-row: span 1; }
    .form-row { flex-direction: column; }
    .footer-top { flex-direction: row; gap: 16px; align-items: flex-start; }
    .footer-brand { display: none; }
    .footer-links { flex: 1; gap: 16px; }
    .footer-qrcode {flex-shrink: 0;flex-direction: column;gap: 10px;align-items: flex-start;margin-right: 30px;}
    .footer-qrcode img { width: 60px; height: 60px; }
    .about-exp { width: 100px; height: 100px; bottom: -12px; right: -12px; }
    .about-title-icon {font-size: 120px;line-height: 42px;}
    .exp-num { font-size: 36px; }
    .float-tools { right: 12px; }
    .float-btn { width: 42px; height: 42px; }
    .theme-switch { display: none; }
}