/* ============================================================
   聚冠 POLYKING - 高端深色科技风
   太空材料 · 高科技材料 主题
   ============================================================ */

:root {
    --bg: #050d1a;
    --bg-2: #0a1730;
    --bg-3: #0f1e3d;
    --panel: rgba(255, 255, 255, 0.03);
    --panel-2: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.08);
    --border-2: rgba(0, 212, 255, 0.2);
    --text: #e5e7eb;
    --text-2: #94a3b8;
    --text-3: #64748b;
    --blue: #0066ff;
    --blue-2: #00a3ff;
    --cyan: #00d4ff;
    --accent: #66e0ff;
    --gold: #fbbf24;
    --green: #10b981;
    --red: #ef4444;
    --gradient-primary: linear-gradient(135deg, #0066ff 0%, #00a3ff 50%, #00d4ff 100%);
    --gradient-dark: linear-gradient(180deg, #050d1a 0%, #0a1730 100%);
    --shadow-glow: 0 0 60px rgba(0, 212, 255, 0.25);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text);
    line-height: 1.7;
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
ul { list-style: none; }

.container { max-width: 1320px; margin: 0 auto; padding: 0 24px; position: relative; }

/* ===== 通用动效 ===== */
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
@keyframes gradient-x { 0%, 100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
@keyframes glow { 0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.3); } 50% { box-shadow: 0 0 40px rgba(0, 212, 255, 0.6); } }
@keyframes scanline { 0% { top: 0; } 100% { top: 100%; } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
@keyframes ripple { to { transform: scale(4); opacity: 0; } }

.fade-in { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-in.in { opacity: 1; transform: translateY(0); }

/* ===== 粒子背景 ===== */
.particles {
    position: absolute; inset: 0; pointer-events: none; overflow: hidden;
}
.particle {
    position: absolute; background: var(--cyan); border-radius: 50%;
    opacity: 0.4; animation: float 6s ease-in-out infinite;
    box-shadow: 0 0 8px currentColor;
}

/* ===== 顶部 ===== */
.topbar {
    background: rgba(5, 13, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
    font-size: 13px;
    padding: 10px 0;
    position: relative;
    z-index: 101;
}
.topbar .container {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 12px;
}
.topbar-left { display: flex; gap: 24px; flex-wrap: wrap; }
.topbar-left span { display: inline-flex; align-items: center; gap: 6px; }
.lang-switch {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 4px 14px; border: 1px solid var(--border-2);
    border-radius: 20px; color: var(--accent); font-size: 12px;
    transition: all 0.3s ease;
}
.lang-switch:hover {
    background: var(--cyan); color: var(--bg); border-color: var(--cyan);
    box-shadow: var(--shadow-glow);
}

/* ===== 导航栏 ===== */
.header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(5, 13, 26, 0.7);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}
.header.scrolled {
    background: rgba(5, 13, 26, 0.95);
    border-bottom-color: var(--border-2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.header .container {
    display: flex; align-items: center; justify-content: space-between; height: 80px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
    width: 48px; height: 48px; border-radius: 12px;
    background: var(--gradient-primary);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 800; font-size: 19px;
    box-shadow: 0 0 20px rgba(0, 102, 255, 0.5);
    position: relative;
    overflow: hidden;
}
.logo-mark::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.4), transparent 70%);
    transform: translateX(-100%);
    animation: shine 3s ease-in-out infinite;
}
@keyframes shine { 0%, 100% { transform: translateX(-100%); } 50% { transform: translateX(100%); } }
.logo-text { line-height: 1.2; }
.logo-text strong { display: block; font-size: 18px; color: #fff; font-weight: 800; letter-spacing: 0.5px; }
.logo-text small { font-size: 11px; color: var(--text-3); letter-spacing: 1.5px; text-transform: uppercase; }

.nav { display: flex; gap: 4px; align-items: center; }
.nav a {
    padding: 10px 20px; font-size: 15px; font-weight: 500;
    color: var(--text-2); position: relative;
}
.nav a:hover { color: #fff; }
.nav a.active { color: var(--cyan); }
.nav a.active::after {
    content: ''; position: absolute; bottom: 4px; left: 50%;
    transform: translateX(-50%);
    width: 24px; height: 2px;
    background: var(--gradient-primary);
    box-shadow: 0 0 10px var(--cyan);
}
.nav-inquiry {
    background: var(--gradient-primary);
    color: #fff !important; margin-left: 12px;
    border-radius: 8px; font-weight: 600 !important;
    box-shadow: 0 0 24px rgba(0, 212, 255, 0.4);
    transition: all 0.3s ease;
}
.nav-inquiry:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 36px rgba(0, 212, 255, 0.6);
}

.menu-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 8px; cursor: pointer; padding: 10px;
}
.menu-toggle span { width: 22px; height: 2px; background: #fff; transition: all 0.3s ease; }

/* ===== Hero 区 ===== */
.hero {
    position: relative; min-height: 92vh; padding: 80px 0 60px;
    background: var(--bg);
    overflow: hidden;
    display: flex; align-items: center;
}
.hero-bg {
    position: absolute; inset: 0; z-index: 0;
    background: radial-gradient(ellipse 80% 60% at 70% 30%, rgba(0, 102, 255, 0.18), transparent 60%),
                radial-gradient(ellipse 60% 40% at 20% 70%, rgba(0, 212, 255, 0.12), transparent 60%);
}
.hero-grid {
    position: absolute; inset: 0; z-index: 0;
    background-image: linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 80%);
}
.hero-orbits {
    position: absolute; right: -200px; top: 50%; transform: translateY(-50%);
    width: 800px; height: 800px; pointer-events: none;
}
.orbit {
    position: absolute; inset: 0; border: 1px solid var(--border-2);
    border-radius: 50%;
    animation: spin 40s linear infinite;
}
.orbit-2 { inset: 60px; border-color: rgba(0, 212, 255, 0.1); animation-duration: 60s; animation-direction: reverse; }
.orbit-3 { inset: 140px; border-color: rgba(0, 102, 255, 0.15); animation-duration: 80s; }
.orbit::before, .orbit::after {
    content: ''; position: absolute; width: 6px; height: 6px;
    background: var(--cyan); border-radius: 50%; box-shadow: 0 0 12px var(--cyan);
}
.orbit::before { top: -3px; left: 50%; transform: translateX(-50%); }
.orbit::after { bottom: -3px; left: 50%; transform: translateX(-50%); background: var(--blue); box-shadow: 0 0 12px var(--blue); }

.hero .container {
    position: relative; z-index: 2;
    display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center;
}
.hero-content { color: #fff; }
.hero-tag {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 7px 18px; margin-bottom: 28px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid var(--border-2);
    border-radius: 30px; font-size: 13px; color: var(--cyan);
    letter-spacing: 1.5px;
    backdrop-filter: blur(10px);
}
.hero-tag .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--cyan); box-shadow: 0 0 12px var(--cyan);
    animation: blink 2s ease-in-out infinite;
}
.hero h1 {
    font-size: 62px; font-weight: 800; line-height: 1.1;
    margin-bottom: 24px; letter-spacing: -1px;
}
.hero h1 .gradient {
    background: linear-gradient(90deg, #66e0ff, #00d4ff, #0066ff);
    background-size: 200% 100%;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; color: transparent;
    animation: gradient-x 5s ease infinite;
}
.hero p { font-size: 19px; color: rgba(229, 231, 235, 0.75); margin-bottom: 36px; line-height: 1.8; max-width: 580px; }
.hero-btns { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 56px; }
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 10px; padding: 16px 36px; border-radius: 10px;
    font-size: 16px; font-weight: 600; cursor: pointer; border: none;
    transition: all 0.3s ease; position: relative; overflow: hidden;
}
.btn-primary {
    background: var(--gradient-primary);
    color: #fff; box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 50px rgba(0, 212, 255, 0.5); }
.btn-primary::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.3), transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}
.btn-primary:hover::before { transform: translateX(100%); }
.btn-outline {
    background: transparent; color: #fff;
    border: 2px solid var(--border-2);
}
.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0, 212, 255, 0.05); }

/* Hero 数据统计 */
.hero-stats { display: flex; gap: 44px; flex-wrap: wrap; }
.stat-item { position: relative; }
.stat-num {
    font-size: 38px; font-weight: 800; line-height: 1;
    background: linear-gradient(135deg, #66e0ff, #00d4ff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
}
.stat-label { font-size: 13px; color: var(--text-2); letter-spacing: 0.5px; }
.stat-item::after {
    content: ''; position: absolute; right: -22px; top: 8px; bottom: 8px;
    width: 1px; background: var(--border);
}
.stat-item:last-child::after { display: none; }

/* Hero 右侧大图 */
.hero-visual { position: relative; height: 580px; }
.hero-image-main {
    position: absolute; right: 0; top: 0; width: 100%; height: 100%;
    border-radius: 24px; overflow: hidden;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), 0 0 60px rgba(0, 212, 255, 0.2);
}
.hero-image-main img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s ease;
}
.hero-image-main:hover img { transform: scale(1.05); }
.hero-image-main::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.2), transparent 50%, rgba(0, 212, 255, 0.1));
}
.hero-image-main::before {
    content: ''; position: absolute; inset: -2px; border-radius: 25px;
    background: var(--gradient-primary); z-index: -1;
    opacity: 0.5; filter: blur(20px);
}
.hero-badge {
    position: absolute; padding: 14px 22px; background: rgba(5, 13, 26, 0.85);
    backdrop-filter: blur(20px); border: 1px solid var(--border-2);
    border-radius: 16px; z-index: 3;
    display: flex; align-items: center; gap: 14px;
    box-shadow: var(--shadow-md);
    animation: float 4s ease-in-out infinite;
}
.hero-badge .icon {
    width: 40px; height: 40px; border-radius: 10px;
    background: var(--gradient-primary);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 700;
}
.hero-badge .num { font-size: 22px; font-weight: 800; color: #fff; line-height: 1; }
.hero-badge .lbl { font-size: 12px; color: var(--text-2); }
.hero-badge-1 { bottom: 30px; left: -20px; }
.hero-badge-2 { top: 30px; right: -20px; animation-delay: -2s; }
.hero-scan {
    position: absolute; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    box-shadow: 0 0 12px var(--cyan);
    animation: scanline 4s linear infinite; pointer-events: none; z-index: 2;
}

/* ===== 区块通用 ===== */
.section { padding: 100px 0; position: relative; }
.section-dark { background: var(--bg-2); }
.section-gradient {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 50%, var(--bg) 100%);
}
.section-head { text-align: center; margin-bottom: 64px; position: relative; }
.section-tag {
    display: inline-block; font-size: 13px; font-weight: 700;
    color: var(--cyan); letter-spacing: 4px; text-transform: uppercase;
    margin-bottom: 16px; padding: 6px 18px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid var(--border-2); border-radius: 20px;
}
.section-title {
    font-size: 44px; font-weight: 800; color: #fff;
    margin-bottom: 18px; letter-spacing: -0.5px; line-height: 1.2;
}
.section-title .gradient {
    background: linear-gradient(90deg, #66e0ff, #00d4ff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.section-sub { font-size: 17px; color: var(--text-2); max-width: 700px; margin: 0 auto; line-height: 1.7; }

/* ===== 数据展示条 ===== */
.data-strip {
    background: linear-gradient(135deg, var(--bg-2) 0%, var(--bg-3) 100%);
    padding: 60px 0; position: relative; overflow: hidden;
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.data-strip::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(0, 102, 255, 0.15), transparent 60%);
}
.data-strip .container {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
    position: relative; z-index: 2;
}
.data-card { text-align: center; padding: 24px; position: relative; }
.data-num {
    font-size: 56px; font-weight: 800; line-height: 1;
    background: linear-gradient(135deg, #66e0ff, #00d4ff, #0066ff);
    background-size: 200% 100%;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
    animation: gradient-x 4s ease infinite;
}
.data-suffix { font-size: 24px; color: var(--cyan); margin-left: 4px; }
.data-lbl { font-size: 14px; color: var(--text-2); letter-spacing: 0.5px; }

/* ===== 关于区块 - 大图 + 数据 ===== */
.about-hero {
    display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.about-image-wrap { position: relative; height: 540px; }
.about-image {
    width: 100%; height: 100%; border-radius: 24px; overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}
.about-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.about-image:hover img { transform: scale(1.04); }
.about-image::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.15), transparent 60%);
}
.about-floating {
    position: absolute; background: rgba(5, 13, 26, 0.9);
    backdrop-filter: blur(20px); border: 1px solid var(--border-2);
    border-radius: 16px; padding: 18px 22px;
    box-shadow: var(--shadow-md); display: flex; align-items: center; gap: 14px;
    animation: float 5s ease-in-out infinite;
}
.about-floating .ic {
    width: 44px; height: 44px; border-radius: 12px;
    background: var(--gradient-primary);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px;
}
.about-floating .v { font-size: 22px; font-weight: 800; color: #fff; line-height: 1; }
.about-floating .l { font-size: 12px; color: var(--text-2); margin-top: 2px; }
.about-floating.f1 { top: 30px; right: -30px; animation-delay: -1s; }
.about-floating.f2 { bottom: 30px; left: -30px; }

.about-text h2 {
    font-size: 42px; color: #fff; margin-bottom: 22px;
    font-weight: 800; line-height: 1.25;
}
.about-text h2 .gradient {
    background: linear-gradient(90deg, #66e0ff, #00d4ff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.about-text p { color: var(--text-2); margin-bottom: 20px; line-height: 1.95; font-size: 16px; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 28px 0 32px; }
.about-feature {
    padding: 18px 20px; background: var(--panel);
    border: 1px solid var(--border); border-radius: 12px;
    transition: all 0.3s ease;
}
.about-feature:hover {
    background: var(--panel-2); border-color: var(--border-2);
    transform: translateY(-2px);
}
.about-feature .ic {
    width: 38px; height: 38px; border-radius: 10px;
    background: var(--gradient-primary);
    display: inline-flex; align-items: center; justify-content: center;
    color: #fff; font-size: 16px; margin-bottom: 10px;
}
.about-feature h4 { color: #fff; font-size: 15px; margin-bottom: 4px; font-weight: 700; }
.about-feature p { color: var(--text-2); font-size: 13px; margin: 0; line-height: 1.6; }

/* ===== 优势网格 ===== */
.feature-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.feature-card {
    position: relative; padding: 36px 28px; border-radius: 18px;
    background: var(--panel); border: 1px solid var(--border);
    transition: all 0.4s ease; overflow: hidden;
}
.feature-card::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.05), transparent 60%);
    opacity: 0; transition: opacity 0.4s ease;
}
.feature-card:hover { border-color: var(--border-2); transform: translateY(-6px); }
.feature-card:hover::before { opacity: 1; }
.feature-card .icon-wrap {
    width: 60px; height: 60px; border-radius: 14px;
    background: var(--gradient-primary);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 24px; font-weight: 800; margin-bottom: 22px;
    box-shadow: 0 0 24px rgba(0, 212, 255, 0.3);
    position: relative; z-index: 2;
}
.feature-card h3 { color: #fff; font-size: 19px; margin-bottom: 12px; font-weight: 700; position: relative; z-index: 2; }
.feature-card p { color: var(--text-2); font-size: 14px; line-height: 1.7; margin: 0; position: relative; z-index: 2; }

/* ===== 产品大图网格 ===== */
.product-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.product-card {
    position: relative; border-radius: 18px; overflow: hidden;
    background: var(--panel); border: 1px solid var(--border);
    transition: all 0.4s ease;
}
.product-card:hover { transform: translateY(-8px); border-color: var(--border-2); box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4); }
.product-img {
    position: relative; height: 240px; overflow: hidden;
    background: var(--bg-2);
}
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.product-card:hover .product-img img { transform: scale(1.1); }
.product-img::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(5, 13, 26, 0.85));
}
.product-badge {
    position: absolute; top: 16px; left: 16px; z-index: 2;
    padding: 5px 14px; border-radius: 20px; font-size: 11px; font-weight: 700;
    background: rgba(0, 212, 255, 0.2); color: var(--cyan);
    backdrop-filter: blur(10px); border: 1px solid var(--border-2);
    letter-spacing: 1px;
}
.product-icon {
    position: absolute; bottom: -30px; right: 20px; z-index: 3;
    width: 56px; height: 56px; border-radius: 14px;
    background: var(--gradient-primary);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 22px; font-weight: 800;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
    transition: bottom 0.4s ease;
}
.product-card:hover .product-icon { bottom: -20px; }
.product-body { padding: 28px 24px 24px; position: relative; }
.product-model {
    font-size: 12px; color: var(--cyan); font-weight: 700;
    letter-spacing: 1px; margin-bottom: 8px; font-family: 'Courier New', monospace;
    padding: 3px 10px; background: rgba(0, 212, 255, 0.1); border-radius: 4px;
    display: inline-block;
}
.product-name {
    font-size: 18px; font-weight: 700; color: #fff;
    margin-bottom: 10px; line-height: 1.4;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden; min-height: 50px;
}
.product-desc {
    font-size: 13px; color: var(--text-2); line-height: 1.7;
    margin-bottom: 16px; min-height: 44px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-link {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 14px; font-weight: 600; color: var(--cyan);
    text-transform: uppercase; letter-spacing: 0.5px;
}
.product-link svg { width: 14px; height: 14px; transition: transform 0.3s ease; }
.product-link:hover svg { transform: translateX(4px); }

/* ===== 应用领域 ===== */
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.app-card {
    position: relative; height: 280px; border-radius: 18px; overflow: hidden;
    border: 1px solid var(--border); cursor: pointer;
    transition: all 0.4s ease;
}
.app-card:hover { transform: translateY(-6px); border-color: var(--border-2); }
.app-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.app-card:hover img { transform: scale(1.1); }
.app-card::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(5, 13, 26, 0.95));
}
.app-card-content {
    position: absolute; bottom: 0; left: 0; right: 0; padding: 24px;
    z-index: 2; transform: translateY(0); transition: transform 0.4s ease;
}
.app-card-content .ic {
    width: 44px; height: 44px; border-radius: 12px;
    background: var(--gradient-primary);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px; margin-bottom: 12px;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}
.app-card-content h3 { color: #fff; font-size: 18px; margin-bottom: 6px; font-weight: 700; }
.app-card-content p { color: rgba(229, 231, 235, 0.7); font-size: 13px; line-height: 1.6; margin: 0; }

/* ===== 工厂/实验室滚动展示 ===== */
.facility-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 16px; height: 600px; }
.facility-cell { position: relative; border-radius: 16px; overflow: hidden; border: 1px solid var(--border); }
.facility-cell img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.facility-cell:hover img { transform: scale(1.06); }
.facility-cell::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(5, 13, 26, 0.9));
}
.facility-cell .lbl {
    position: absolute; bottom: 20px; left: 20px; right: 20px; z-index: 2;
    color: #fff; font-size: 18px; font-weight: 700;
}
.facility-cell .lbl small { display: block; color: var(--text-2); font-weight: 400; font-size: 12px; margin-top: 4px; }
.facility-cell-big { grid-row: span 2; }

/* ===== 客户 logo ===== */
.partners-wrap {
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 20px; padding: 32px; margin-top: 30px;
}
.partners-grid {
    display: grid; grid-template-columns: repeat(8, 1fr);
    gap: 0; align-items: stretch;
}
.partners-grid .partner { min-height: 0; }
.partner {
    aspect-ratio: 2/1; display: flex; align-items: center; justify-content: center;
    color: var(--text-2); font-weight: 700; font-size: 14px;
    line-height: 1.25; letter-spacing: 0.3px;
    border-right: 1px solid var(--border); border-bottom: 1px solid var(--border);
    transition: all 0.3s ease; text-align: center; padding: 12px 10px;
    min-width: 0; max-width: 100%; overflow: hidden; word-break: keep-all;
    overflow-wrap: anywhere; hyphens: auto;
}
.partner:nth-child(8n) { border-right: none; }
.partner:nth-last-child(-n+8) { border-bottom: none; }
.partner:hover { color: var(--cyan); background: rgba(0, 212, 255, 0.04); }

/* ===== 新闻卡片 ===== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 18px; overflow: hidden; transition: all 0.4s ease;
    position: relative;
}
.news-card:hover { transform: translateY(-6px); border-color: var(--border-2); box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3); }
.news-img { position: relative; height: 220px; overflow: hidden; }
.news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.news-card:hover .news-img img { transform: scale(1.1); }
.news-img::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(5, 13, 26, 0.7));
}
.news-img .cat {
    position: absolute; top: 16px; left: 16px; z-index: 2;
    padding: 4px 12px; background: rgba(0, 212, 255, 0.2); color: var(--cyan);
    border-radius: 4px; font-size: 11px; font-weight: 600;
    backdrop-filter: blur(10px); border: 1px solid var(--border-2);
}
.news-body { padding: 24px 24px 28px; }
.news-meta {
    display: flex; gap: 14px; font-size: 12px; color: var(--text-3);
    margin-bottom: 12px; align-items: center;
}
.news-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--text-3); }
.news-title {
    font-size: 18px; font-weight: 700; color: #fff; line-height: 1.45;
    margin-bottom: 12px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card:hover .news-title { color: var(--cyan); }
.news-summary {
    font-size: 14px; color: var(--text-2); line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.news-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 13px; font-weight: 600; color: var(--cyan);
}

/* ===== 页头横幅 ===== */
.page-banner {
    padding: 120px 0 80px; color: #fff; position: relative; overflow: hidden;
    background: var(--bg);
}
.page-banner::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 102, 255, 0.2), transparent 60%),
                radial-gradient(ellipse 40% 30% at 80% 100%, rgba(0, 212, 255, 0.15), transparent 60%);
}
.page-banner::after {
    content: ''; position: absolute; inset: 0;
    background-image: linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { font-size: 48px; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.5px; }
.page-banner h1 .gradient {
    background: linear-gradient(90deg, #66e0ff, #00d4ff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.breadcrumb { font-size: 14px; color: var(--text-2); }
.breadcrumb a { color: var(--cyan); }
.breadcrumb a:hover { color: #fff; }

/* ===== 筛选条 ===== */
.filter-bar {
    display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 48px;
}
.filter-btn {
    padding: 10px 24px; border-radius: 30px; font-size: 14px; font-weight: 500;
    border: 1px solid var(--border); background: var(--panel); color: var(--text-2);
    transition: all 0.3s ease; cursor: pointer;
}
.filter-btn:hover { border-color: var(--border-2); color: var(--cyan); transform: translateY(-2px); }
.filter-btn.active {
    background: var(--gradient-primary); color: #fff; border-color: transparent;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

/* ===== 产品详情 ===== */
.detail-wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: start; }
.detail-image {
    border-radius: 20px; overflow: hidden; aspect-ratio: 1/1;
    box-shadow: var(--shadow-lg); position: relative;
}
.detail-image img { width: 100%; height: 100%; object-fit: cover; }
.detail-image::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), transparent 60%);
}
.detail-info h1 { font-size: 36px; color: #fff; margin-bottom: 12px; font-weight: 800; line-height: 1.3; }
.detail-model {
    display: inline-block; font-size: 14px; color: var(--cyan); font-weight: 700;
    font-family: monospace; margin-bottom: 20px;
    padding: 6px 16px; background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-2); border-radius: 6px;
}
.detail-content { color: var(--text); line-height: 1.95; margin-bottom: 28px; font-size: 15px; }
.detail-content p { margin-bottom: 14px; }
.spec-table { width: 100%; border-collapse: collapse; margin-bottom: 28px; font-size: 14px; }
.spec-table th, .spec-table td {
    padding: 14px 18px; border: 1px solid var(--border); text-align: left;
}
.spec-table th { background: var(--panel-2); font-weight: 600; color: var(--cyan); width: 35%; }
.spec-table td { color: var(--text); }
.detail-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== 新闻详情 ===== */
.article { max-width: 880px; margin: 0 auto; }
.article-head { text-align: center; margin-bottom: 48px; }
.article-head h1 { font-size: 38px; color: #fff; font-weight: 800; line-height: 1.4; margin-bottom: 18px; }
.article-meta {
    display: flex; gap: 18px; justify-content: center;
    font-size: 13px; color: var(--text-2); flex-wrap: wrap;
}
.article-meta .badge { padding: 4px 12px; background: rgba(0, 212, 255, 0.15); color: var(--cyan); border-radius: 4px; font-size: 12px; }
.article-body { font-size: 16px; line-height: 2; color: var(--text); }
.article-body p { margin-bottom: 20px; }
.article-body img { max-width: 100%; border-radius: 16px; margin: 24px 0; box-shadow: var(--shadow-md); }
.article-body h2, .article-body h3 { color: #fff; margin: 32px 0 16px; font-weight: 800; }
.article-nav {
    display: flex; justify-content: space-between; gap: 20px;
    margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--border);
    flex-wrap: wrap;
}
.article-nav a { font-size: 14px; color: var(--text-2); max-width: 45%; }
.article-nav a:hover { color: var(--cyan); }

/* ===== 联系页 ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.contact-info {
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 20px; padding: 40px; position: relative; overflow: hidden;
}
.contact-info::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--gradient-primary);
}
.contact-info h2 { color: #fff; font-size: 24px; margin-bottom: 28px; font-weight: 800; }
.contact-item {
    display: flex; gap: 16px; margin-bottom: 26px; align-items: flex-start;
}
.contact-icon {
    width: 48px; height: 48px; flex-shrink: 0; border-radius: 12px;
    background: var(--gradient-primary);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px; font-weight: 800;
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
}
.contact-text strong { display: block; color: #fff; font-size: 15px; margin-bottom: 4px; font-weight: 700; }
.contact-text span, .contact-text a { font-size: 14px; color: var(--text-2); line-height: 1.7; display: block; }
.contact-text a:hover { color: var(--cyan); }

.form-card {
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 20px; padding: 40px; backdrop-filter: blur(20px);
}
.form-card h2 { color: #fff; font-size: 24px; margin-bottom: 8px; font-weight: 800; }
.form-card .form-tip { color: var(--text-2); font-size: 14px; margin-bottom: 28px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label {
    display: block; font-size: 13px; font-weight: 600;
    color: var(--text); margin-bottom: 8px; letter-spacing: 0.5px;
}
.form-group label .req { color: var(--red); }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 14px 18px; border: 1px solid var(--border);
    border-radius: 10px; font-size: 14px; font-family: inherit;
    transition: all 0.3s ease; background: rgba(0, 0, 0, 0.2); color: #fff;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-3); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none; border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1); background: rgba(0, 0, 0, 0.3);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.form-submit { text-align: right; margin-top: 24px; }
.alert {
    padding: 16px 20px; border-radius: 10px; margin-bottom: 24px; font-size: 14px;
    display: flex; align-items: center; gap: 10px;
}
.alert-success { background: rgba(16, 185, 129, 0.1); color: var(--green); border: 1px solid rgba(16, 185, 129, 0.3); }
.alert-error { background: rgba(239, 68, 68, 0.1); color: var(--red); border: 1px solid rgba(239, 68, 68, 0.3); }

/* ===== 资质墙 ===== */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.cert-card {
    position: relative; border-radius: 16px; overflow: hidden;
    background: var(--panel); border: 1px solid var(--border);
    transition: all 0.4s ease; aspect-ratio: 3/4;
}
.cert-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.cert-card:hover { transform: translateY(-4px); border-color: var(--border-2); }
.cert-card:hover img { transform: scale(1.05); }
.cert-card::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(5, 13, 26, 0.95));
}
.cert-card span {
    position: absolute; bottom: 0; left: 0; right: 0; padding: 20px;
    color: #fff; font-weight: 700; font-size: 16px; z-index: 2;
    text-align: center;
}

/* ===== CTA 区 ===== */
.cta {
    padding: 100px 0; text-align: center; color: #fff;
    position: relative; overflow: hidden;
    background: var(--bg);
}
.cta-bg {
    position: absolute; inset: 0; z-index: 0;
    background-image: url('/assets/img/hero/particle.jpg');
    background-size: cover; background-position: center;
    filter: brightness(0.4) saturate(0.8);
}
.cta::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(5, 13, 26, 0.7), rgba(0, 30, 80, 0.8));
}
.cta .container { position: relative; z-index: 2; }
.cta h2 { font-size: 44px; font-weight: 800; margin-bottom: 16px; line-height: 1.2; }
.cta p { font-size: 18px; color: rgba(229, 231, 235, 0.8); margin-bottom: 36px; max-width: 640px; margin-left: auto; margin-right: auto; }
.cta-btns { display: inline-flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-2);
    color: var(--text-2);
    padding: 80px 0 0; font-size: 14px;
    border-top: 1px solid var(--border);
    position: relative;
}
.footer::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: var(--gradient-primary); opacity: 0.5;
}
.footer-grid {
    display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 48px;
    padding-bottom: 48px;
}
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer-logo .mark { width: 44px; height: 44px; font-size: 19px; }
.footer-logo strong { display: block; color: #fff; font-size: 17px; }
.footer-logo small { color: var(--text-3); font-size: 11px; letter-spacing: 1.5px; }
.footer p { line-height: 1.9; margin-bottom: 14px; }
.footer h4 {
    color: #fff; font-size: 16px; font-weight: 700;
    margin-bottom: 22px; position: relative; padding-bottom: 12px;
}
.footer h4::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 28px; height: 2px; background: var(--gradient-primary);
}
.footer ul li { margin-bottom: 10px; }
.footer ul a:hover { color: var(--cyan); padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; }
.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 24px 0; font-size: 13px; color: var(--text-3);
}
.footer-bottom .container {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 12px;
}

/* ===== 分页 ===== */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 56px; flex-wrap: wrap; }
.pagination a, .pagination span {
    padding: 10px 16px; border: 1px solid var(--border); border-radius: 8px;
    font-size: 14px; color: var(--text-2); background: var(--panel);
    transition: all 0.3s ease;
}
.pagination a:hover { border-color: var(--border-2); color: var(--cyan); transform: translateY(-2px); }
.pagination .current {
    background: var(--gradient-primary); color: #fff; border-color: transparent;
    font-weight: 600;
}

/* ===== 空状态 ===== */
.empty-state { text-align: center; padding: 100px 20px; color: var(--text-2); }
.empty-state-icon { font-size: 56px; margin-bottom: 20px; opacity: 0.4; }

/* ===== 响应式 ===== */
/* iPad 横屏 / 中等桌面 */
@media (max-width: 1280px) {
    .hero h1 { font-size: 48px; }
    .hero-stats { gap: 32px; }
    .container { max-width: 100%; padding: 0 28px; }
    .partners-grid .partner { font-size: 13px; padding: 10px 8px; }
}

/* 平板横屏 iPad */
@media (max-width: 1100px) {
    .product-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .app-grid { grid-template-columns: repeat(2, 1fr); }
    .data-strip .container { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .partners-grid { grid-template-columns: repeat(4, 1fr); }
    .partner { border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); font-size: 13px; padding: 10px 8px; }
    .partner:nth-child(4n) { border-right: none; }
    .partner:nth-last-child(-n+4) { border-bottom: none; }
}

/* iPad 竖屏 / 小平板 */
@media (max-width: 900px) {
    .header .container { height: 68px; }
    .logo-mark { width: 42px; height: 42px; font-size: 16px; border-radius: 10px; }
    .logo-text strong { font-size: 16px; }
    .topbar-left { font-size: 12px; gap: 14px; }

    .menu-toggle { display: flex; }
    .nav {
        position: fixed; top: 68px; left: 0; right: 0;
        background: rgba(5, 13, 26, 0.98); backdrop-filter: blur(20px);
        flex-direction: column; gap: 0; padding: 16px;
        transform: translateY(-120%); transition: transform 0.3s ease;
        border-bottom: 1px solid var(--border);
        max-height: calc(100vh - 68px); overflow-y: auto;
    }
    .nav.open { transform: translateY(0); }
    .nav a { width: 100%; padding: 12px 20px; }
    .nav a.active::after { display: none; }
    .nav-inquiry { margin: 8px 0 0; text-align: center; justify-content: center; }

    .hero { min-height: 70vh; padding: 50px 0 40px; }
    .hero .container { grid-template-columns: 1fr; gap: 40px; }
    .hero h1 { font-size: 38px; }
    .hero p { font-size: 16px; }

    .section { padding: 64px 0; }
    .section-title { font-size: 28px; }
    .page-banner { padding: 70px 0 50px; }
    .page-banner h1 { font-size: 30px; }

    .data-strip { padding: 30px 0; }
    .facility-grid { grid-template-columns: 1fr 1fr; grid-template-rows: auto; height: auto; }
    .facility-cell-big { grid-row: span 1; }
    .facility-cell { height: 180px; }

    .partners-wrap { padding: 20px; margin-top: 20px; }
    .partners-grid { grid-template-columns: repeat(4, 1fr); }
    .partner { border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); font-size: 12px; padding: 8px 6px; }
    .partner:nth-child(4n) { border-right: none; }
    .partner:nth-last-child(-n+4) { border-bottom: none; }

    .feature-grid, .product-grid, .news-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
    .app-grid { grid-template-columns: repeat(2, 1fr); }

    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .about-hero, .detail-wrap, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
    .about-features { grid-template-columns: 1fr; }
}

/* 手机 */
@media (max-width: 640px) {
    .container { padding: 0 18px; }
    .topbar { padding: 8px 0; font-size: 12px; }
    .topbar .container { flex-direction: column; align-items: flex-start; gap: 6px; }
    .topbar-left { font-size: 12px; gap: 10px; }
    .lang-switch { padding: 3px 12px; font-size: 11px; }

    .header .container { height: 60px; }
    .logo-mark { width: 38px; height: 38px; font-size: 15px; border-radius: 9px; }
    .logo-text strong { font-size: 15px; }
    .logo-text small { font-size: 10px; }
    .nav { top: 60px; max-height: calc(100vh - 60px); }

    .hero { min-height: 60vh; padding: 40px 0 30px; }
    .hero h1 { font-size: 30px; }
    .hero p { font-size: 15px; }
    .hero-visual { height: 280px; }
    .hero-btns { gap: 12px; margin-bottom: 36px; }
    .hero-cta { padding: 12px 24px; font-size: 14px; }

    .section { padding: 48px 0; }
    .section-title { font-size: 24px; }
    .section-title .accent { display: inline; }
    .section-subtitle { font-size: 14px; }

    .data-strip { padding: 24px 0; }
    .data-strip .container { gap: 18px; }
    .data-item { text-align: center; }
    .stat-num { font-size: 32px; }

    .page-banner { padding: 60px 0 40px; }
    .page-banner h1 { font-size: 24px; }
    .breadcrumb { font-size: 12px; }

    .product-grid, .news-grid, .feature-grid, .app-grid, .cert-grid { grid-template-columns: 1fr; gap: 18px; }
    .data-strip .container { grid-template-columns: 1fr 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .form-card, .contact-info { padding: 24px 18px; }
    .article-head h1 { font-size: 22px; }
    .article-body { font-size: 15px; line-height: 1.8; }

    .partners-wrap { padding: 14px; margin-top: 16px; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); }
    .partner { font-size: 12px; padding: 10px 6px; border-right-width: 1px; border-bottom-width: 1px; }
    .partner:nth-child(2n) { border-right: none; }
    .partner:nth-last-child(-n+2) { border-bottom: none; }
    .partner:nth-child(4n) { border-right: 1px solid var(--border); }
    .partner:nth-child(3n) { border-right: 1px solid var(--border); }

    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom .container { flex-direction: column; text-align: center; gap: 10px; }

    .topbar-left { font-size: 12px; gap: 10px; }
    .detail-info h1 { font-size: 22px; }
    .about-hero, .detail-wrap, .contact-grid { grid-template-columns: 1fr; gap: 30px; }
    .about-features { grid-template-columns: 1fr; }
    .about-text h2 { font-size: 24px; }

    .facility-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .facility-cell-big { grid-row: span 2; grid-column: span 2; }
    .facility-cell { height: 140px; }

    .cta { padding: 60px 24px; }
    .cta h2 { font-size: 24px; }
    .cta p { font-size: 14px; }

    .nav-inquiry { display: none; }
}

/* 超小手机 */
@media (max-width: 380px) {
    .container { padding: 0 14px; }
    .hero h1 { font-size: 26px; }
    .hero-cta { width: 100%; justify-content: center; }
    .hero-btns { width: 100%; }
    .partner { font-size: 11px; padding: 8px 4px; }
}