/* ============================================
   济南安源电力设备有限公司 - 企业官网样式 (v3)
   配色：深青 #1a5276 + 琥珀金 #f39c12
   风格：简约大气 · 专业温暖 · 视觉层次
   ============================================ */

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

:root {
    --color-primary: #1a5276;
    --color-primary-dark: #0e3a52;
    --color-primary-light: #247a9e;
    --color-accent: #f39c12;
    --color-accent-dark: #d68910;
    --color-accent-light: #f8c471;
    --color-bg: #ffffff;
    --color-bg-soft: #f7f9fb;
    --color-bg-warm: #fdf8f0;
    --color-bg-dark: #0e3a52;
    --color-text: #2c3e50;
    --color-text-light: #5d6d7e;
    --color-text-white: #ffffff;
    --color-border: #e2e8ed;
    --color-success: #27ae60;
    --shadow-sm: 0 2px 8px rgba(26, 82, 118, 0.06);
    --shadow-md: 0 6px 24px rgba(26, 82, 118, 0.10);
    --shadow-lg: 0 12px 48px rgba(26, 82, 118, 0.15);
    --shadow-accent: 0 8px 24px rgba(243, 156, 18, 0.25);
    --radius: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --container: 1200px;
    --header-h: 72px;
    --transition: 0.3s ease;
    --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

body {
    font-family: var(--font);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    overflow-x: hidden;
}

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

/* ---- Container ---- */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-h);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo - SVG mark (方案十一B：盾内 Y 形 · 分流入地) */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo .logo-mark {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
}

.nav-logo .logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.nav-logo .logo-zh {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 1px;
}

.nav-logo .logo-en {
    font-size: 0.65rem;
    color: var(--color-text-light);
    font-weight: 400;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

/* Nav menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-menu a {
    padding: 8px 18px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width var(--transition);
}

.nav-menu a:hover { color: var(--color-primary); }
.nav-menu a:hover::after,
.nav-menu a.active::after { width: 24px; }
.nav-menu a.active { color: var(--color-primary); font-weight: 600; }

/* Mobile toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    font-family: inherit;
}

.btn svg { width: 18px; height: 18px; }

.btn-accent {
    background: var(--color-accent);
    color: #fff;
}

.btn-accent:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.btn-teal {
    background: var(--color-primary);
    color: #fff;
}

.btn-teal:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-ghost {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-ghost:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
}

.btn-lg { padding: 16px 40px; font-size: 1rem; }

/* ============================================
   Hero with Carousel (Homepage)
   ============================================ */
.hero {
    position: relative;
    min-height: 640px;
    overflow: hidden;
    background: var(--color-primary-dark);
}

/* Slides */
.hero-slides {
    position: absolute;
    inset: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.2s ease;
    transform: scale(1.05);
}

.hero-slide.active {
    opacity: 1;
    transform: scale(1);
    transition: opacity 1.2s ease, transform 8s ease-out;
}

/* Dark overlay for text readability */
.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(14, 58, 82, 0.85) 0%, rgba(26, 82, 118, 0.7) 50%, rgba(14, 58, 82, 0.6) 100%),
        linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.1) 40%, rgba(0,0,0,0.5) 100%);
    z-index: 1;
}

/* Decorative grid + dot pattern */
.hero-pattern {
    position: absolute;
    inset: 0;
    z-index: 2;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px),
        radial-gradient(circle, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size: 60px 60px, 60px 60px, 24px 24px;
    background-position: -1px -1px, -1px -1px, 0 0;
}

/* Decorative geometric shapes */
.hero-shape {
    position: absolute;
    z-index: 2;
    border: 1px solid rgba(243, 156, 18, 0.2);
    border-radius: 4px;
}

.hero-shape-1 {
    top: 15%;
    right: 10%;
    width: 120px;
    height: 120px;
    transform: rotate(45deg);
    animation: float 8s ease-in-out infinite;
}

.hero-shape-2 {
    bottom: 20%;
    right: 25%;
    width: 80px;
    height: 80px;
    transform: rotate(15deg);
    border-color: rgba(255, 255, 255, 0.1);
    animation: float 10s ease-in-out infinite reverse;
}

.hero-shape-3 {
    top: 35%;
    right: 6%;
    width: 40px;
    height: 40px;
    background: rgba(243, 156, 18, 0.15);
    border: none;
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(45deg); }
    50% { transform: translateY(-20px) rotate(45deg); }
}

.hero-shape-2 { animation-name: float2; }
@keyframes float2 {
    0%, 100% { transform: translateY(0) rotate(15deg); }
    50% { transform: translateY(20px) rotate(15deg); }
}

.hero-shape-3 { animation-name: float3; }
@keyframes float3 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Content */
.hero-content {
    position: relative;
    z-index: 5;
    max-width: 760px;
    padding: calc(var(--header-h) + 80px) 0 100px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(243, 156, 18, 0.15);
    border: 1px solid rgba(243, 156, 18, 0.35);
    border-radius: 100px;
    color: var(--color-accent-light);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
    backdrop-filter: blur(4px);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    margin-bottom: 24px;
    letter-spacing: 1px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.hero h1 .highlight {
    color: var(--color-accent);
    position: relative;
}

.hero p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 36px;
    line-height: 1.8;
    max-width: 620px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-note {
    display: flex;
    align-items: center;
    gap: 14px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.hero-note .note-num {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
}

.hero-note .note-text {
    line-height: 1.4;
}

/* Carousel indicators */
.hero-indicators {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    display: flex;
    gap: 10px;
}

.hero-indicator {
    width: 32px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.4s ease;
    border: none;
    padding: 0;
}

.hero-indicator.active {
    background: var(--color-accent);
    width: 48px;
}

/* Carousel arrows */
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    transition: all var(--transition);
}

.hero-arrow:hover {
    background: rgba(243, 156, 18, 0.3);
    border-color: var(--color-accent);
}

.hero-arrow svg { width: 20px; height: 20px; }
.hero-arrow.prev { left: 32px; }
.hero-arrow.next { right: 32px; }

/* ============================================
   Page Hero (inner pages)
   ============================================ */
.page-hero {
    padding: calc(var(--header-h) + 60px) 0 60px;
    background:
        radial-gradient(circle at 30% 50%, rgba(243, 156, 18, 0.06) 0%, transparent 50%),
        linear-gradient(135deg, #0e3a52 0%, #1a5276 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 24px 24px;
}

.page-hero::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary-light), var(--color-accent));
}

.page-hero .container { position: relative; z-index: 2; }

.page-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}

.page-hero p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb a:hover { color: var(--color-accent-light); }

/* ============================================
   Section
   ============================================ */
.section { padding: 80px 0; }
.section-soft { background: var(--color-bg-soft); }
.section-warm { background: var(--color-bg-warm); }

.section-title {
    text-align: center;
    margin-bottom: 56px;
}

.section-title .eyebrow {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(243, 156, 18, 0.1);
    color: var(--color-accent-dark);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-title h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
}

.section-title p {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

.section-title.left {
    text-align: left;
}

.section-title.left h2 { font-size: 2rem; }
.section-title.left p { margin: 0; }

/* ============================================
   Business Cards
   ============================================ */
.biz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

.biz-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.biz-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.biz-card:hover {
    border-color: rgba(243, 156, 18, 0.3);
    box-shadow: var(--shadow-md);
    transform: translateY(-6px);
}

.biz-card:hover::before { transform: scaleX(1); }

.biz-icon {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(26, 82, 118, 0.08), rgba(243, 156, 18, 0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--color-primary);
    transition: all var(--transition);
}

.biz-card:hover .biz-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: #fff;
}

.biz-icon svg { width: 30px; height: 30px; }

.biz-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
}

.biz-card p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.biz-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-accent-dark);
    font-weight: 600;
    font-size: 0.9rem;
}

.biz-link svg { width: 16px; height: 16px; transition: transform var(--transition); }
.biz-card:hover .biz-link svg { transform: translateX(4px); }

/* ============================================
   About Preview
   ============================================ */
.about-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-preview .about-text h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-text);
}

.about-preview .about-text > p {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: 24px;
    line-height: 1.9;
}

.about-list { margin-bottom: 32px; }

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 0.98rem;
    color: var(--color-text);
}

.about-list li svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

/* About visual card */
.about-visual-card {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    color: #fff;
    position: relative;
    overflow: hidden;
    min-height: 360px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.about-visual-card::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -30%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(243, 156, 18, 0.12) 0%, transparent 50%);
}

.about-visual-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 20px 20px;
}

.about-visual-card .avc-big {
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 12px;
    position: relative;
}

.about-visual-card .avc-big span {
    font-size: 1.8rem;
}

.about-visual-card .avc-label {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 24px;
    position: relative;
}

.about-visual-card .avc-desc {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    position: relative;
}

/* ============================================
   Service Flow (Homepage)
   ============================================ */
.service-flow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    margin-top: 16px;
}

.service-flow::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--color-border) 0, var(--color-border) 8px, transparent 8px, transparent 16px);
    z-index: 0;
}

.flow-step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.flow-step .step-num {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    position: relative;
}

.flow-step:hover .step-num {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.flow-step .step-num svg {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.flow-step .step-label {
    font-size: 0.8rem;
    color: var(--color-accent-dark);
    font-weight: 600;
    margin-bottom: 6px;
}

.flow-step h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.flow-step p {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.7;
    padding: 0 8px;
}

/* ============================================
   Capability Chain (About Page - 一体化服务能力)
   ============================================ */
.capability-chain {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 0;
    margin-top: 16px;
}

.cap-node {
    flex: 1;
    max-width: 300px;
    text-align: center;
    padding: 36px 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.cap-node:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.cap-node .cap-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    border-radius: 12px;
    background: var(--color-primary);
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
}

.cap-node h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 10px;
}

.cap-node p {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.cap-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    color: var(--color-accent);
}

.cap-arrow svg {
    width: 28px;
    height: 28px;
}

.capability-note {
    text-align: center;
    margin-top: 36px;
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ============================================
   Advantages
   ============================================ */
.adv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.adv-card {
    text-align: center;
    padding: 44px 28px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.adv-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: rgba(243, 156, 18, 0.2);
}

.adv-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.1), rgba(26, 82, 118, 0.06));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-dark);
}

.adv-icon svg { width: 30px; height: 30px; }

.adv-card h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 10px;
}

.adv-card p {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ============================================
   Industry News (Homepage)
   ============================================ */
#industry-news {
    background: var(--color-bg-soft);
}

.news-wrap {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

/* 顶部信息栏 */
.news-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 24px;
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(90deg, rgba(26, 82, 118, 0.03), rgba(243, 156, 18, 0.03));
    flex-wrap: wrap;
}

.news-live {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 14px;
    background: rgba(231, 76, 60, 0.08);
    border: 1px solid rgba(231, 76, 60, 0.25);
    border-radius: 100px;
    color: #c0392b;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.live-dot {
    width: 8px;
    height: 8px;
    background: #e74c3c;
    border-radius: 50%;
    animation: livePulse 1.6s ease infinite;
}

@keyframes livePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.45); }
    50% { box-shadow: 0 0 0 6px rgba(231, 76, 60, 0); }
}

.news-updated {
    font-size: 0.82rem;
    color: var(--color-text-light);
}

.news-more {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-primary);
}

.news-more svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition);
}

.news-more:hover svg { transform: translateX(4px); }

/* 新闻列表 */
.news-list { padding: 8px 24px 16px; }

.news-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 4px;
    border-bottom: 1px dashed var(--color-border);
    animation: newsFadeIn 0.5s ease both;
}

.news-item:last-child { border-bottom: none; }

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

.news-source {
    flex-shrink: 0;
    min-width: 76px;
    text-align: center;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--color-bg-soft);
    color: var(--color-text-light);
}

/* 来源配色 */
.news-source.src-nea        { background: rgba(26, 82, 118, 0.10); color: #1a5276; }
.news-source.src-cpnn       { background: rgba(41, 128, 185, 0.12); color: #2980b9; }
.news-source.src-xinhua     { background: rgba(231, 76, 60, 0.10); color: #c0392b; }
.news-source.src-chinapower { background: rgba(39, 174, 96, 0.12); color: #1e8449; }
.news-source.src-china5e    { background: rgba(243, 156, 18, 0.12); color: #b9770e; }
.news-source.src-ne21       { background: rgba(230, 126, 34, 0.12); color: #ca6f1e; }

.news-title {
    flex: 1;
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition);
}

.news-item:hover .news-title { color: var(--color-primary); }

.news-date {
    flex-shrink: 0;
    font-size: 0.8rem;
    color: var(--color-text-light);
    white-space: nowrap;
}

/* 骨架屏（加载中） */
.news-skeleton-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 4px;
}

.news-skeleton-item .sk {
    background: linear-gradient(90deg, #edf1f5 25%, #f6f8fa 50%, #edf1f5 75%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.4s ease infinite;
    border-radius: 4px;
}

@keyframes skeletonShimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* 错误提示 */
.news-error {
    padding: 32px 24px;
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.9rem;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    background:
        radial-gradient(circle at 80% 50%, rgba(243, 156, 18, 0.1) 0%, transparent 50%),
        linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    padding: 64px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 24px 24px;
}

.cta-content { position: relative; z-index: 2; }

.cta-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

/* ============================================
   Footer (multi-column)
   ============================================ */
.site-footer {
    background: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.6);
    padding: 64px 0 0;
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-primary-light) 50%, var(--color-accent) 100%);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.2fr 1.4fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-col h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
}

.footer-col p {
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 12px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
}

.footer-col ul li a::before {
    content: '';
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-accent-light);
    padding-left: 4px;
}

.footer-col ul li a:hover::before {
    width: 12px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo .logo-mark {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
}

.footer-logo .logo-zh {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
}

.footer-logo .logo-en {
    display: block;
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.4);
    font-weight: 400;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-top: 2px;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.88rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
}

.footer-contact-item svg {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-contact-item a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact-item a:hover {
    color: var(--color-accent-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a { color: rgba(255, 255, 255, 0.68); text-decoration: none; transition: color 0.2s; }
.footer-bottom a:hover { color: var(--color-accent-light); }

/* ============================================
   About Page
   ============================================ */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-intro .intro-text h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 24px;
}

.about-intro .intro-text p {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.9;
}

/* ============================================
   Business Page - Alternating Layout
   ============================================ */
.biz-detail {
    max-width: 760px;
    margin: 0 auto 80px;
}

.biz-detail:last-of-type { margin-bottom: 0; }

.biz-detail-text h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
}

.biz-detail-text .biz-tag {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(243, 156, 18, 0.1);
    color: var(--color-accent-dark);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
}

.biz-detail-text > p {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.9;
    margin-bottom: 24px;
}

.biz-detail-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.biz-detail-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.92rem;
    color: var(--color-text);
}

.biz-detail-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ============================================
   Products Page - System Blocks
   ============================================ */
section[id] { scroll-margin-top: 96px; }

.sys-intro {
    text-align: center;
    max-width: 920px;
    margin: 0 auto;
}

.sys-intro .sys-kicker {
    display: inline-block;
    padding: 5px 16px;
    border-radius: 100px;
    background: rgba(26, 82, 118, 0.08);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 18px;
}

.sys-intro h2 {
    font-size: 2.1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 18px;
}

.sys-intro p {
    font-size: 1.03rem;
    line-height: 2;
    color: var(--color-text-light);
}

.sys-head { text-align: center; }

.sys-head .sys-num {
    display: inline-block;
    padding: 3px 14px;
    border-radius: 100px;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.sys-head h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 10px;
}

.sys-head .sys-role {
    font-size: 1.05rem;
    color: var(--color-primary);
    font-weight: 500;
}

.sys-desc {
    max-width: 860px;
    margin: 22px auto 0;
    text-align: center;
    font-size: 1rem;
    line-height: 2;
    color: var(--color-text-light);
}

.sys-label {
    display: flex;
    align-items: center;
    gap: 14px;
    max-width: 920px;
    margin: 46px auto 22px;
    color: var(--color-text);
    font-size: 1.15rem;
    font-weight: 700;
}

.sys-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--color-primary), transparent);
}

.sys-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    max-width: 920px;
    margin: 0 auto;
}

.sys-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px 22px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.sys-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.sys-card h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 10px;
}

.sys-card h4::before {
    content: '';
    width: 9px;
    height: 9px;
    flex-shrink: 0;
    background: var(--color-accent);
    border-radius: 2px;
}

.sys-card p {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ============================================
   Showcase / System screenshots
   ============================================ */
.showcase-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 12px;
}

.showcase-figure {
    display: block;
    margin: 0;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition);
}

.showcase-figure:hover {
    box-shadow: var(--shadow-md);
}

.showcase-figure img {
    display: block;
    width: 100%;
    height: auto;
    background: #002b36;
}

.showcase-figure figcaption {
    padding: 14px 18px;
    background: var(--color-bg-soft);
    color: var(--color-text-light);
    font-size: 0.85rem;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

@media (max-width: 768px) {
    .showcase-grid {
        grid-template-columns: 1fr;
    }
}

.sys-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    max-width: 920px;
    margin: 8px auto 0;
}

.sys-chip {
    padding: 10px 20px;
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.92rem;
    color: var(--color-text);
}

@media (max-width: 600px) {
    .sys-intro h2,
    .sys-head h3 { font-size: 1.55rem; }
    .sys-intro p,
    .sys-desc { font-size: 0.95rem; }
    .sys-card { padding: 20px 16px; }
    .sys-label { margin-top: 36px; }
}

/* ============================================
   Project Cases
   ============================================ */
.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 960px;
    margin: 0 auto;
}

.case-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 30px 28px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: all var(--transition);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.case-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.case-tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 100px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(26, 82, 118, 0.08);
    border: 1px solid rgba(26, 82, 118, 0.16);
}

.case-year {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 100px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-accent-dark);
    background: rgba(243, 156, 18, 0.12);
    border: 1px solid rgba(243, 156, 18, 0.25);
}

.case-card h4 {
    font-size: 1.22rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.5;
    margin-bottom: 10px;
}

.case-desc {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 22px;
}

.case-stats {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px dashed var(--color-border);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.case-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.cs-num {
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}

.cs-label {
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-top: 6px;
}

@media (max-width: 600px) {
    .case-grid { grid-template-columns: 1fr; }
    .case-card { padding: 24px 20px; }
    .cs-num { font-size: 1.8rem; }
}

/* ============================================
   Contact Page
   ============================================ */
.contact-highlight {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.contact-phone-block {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-xl);
    padding: 56px 48px;
    color: #fff;
    position: relative;
    overflow: hidden;
    margin-bottom: 32px;
}

.contact-phone-block::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -30%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(243, 156, 18, 0.1) 0%, transparent 50%);
}

.contact-phone-block::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 24px 24px;
}

.contact-phone-block > * { position: relative; z-index: 2; }

.contact-phone-block .cpb-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 12px;
}

.contact-phone-block .cpb-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-accent);
    letter-spacing: 2px;
    margin-bottom: 24px;
    line-height: 1.2;
}

.contact-phone-block .cpb-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: var(--color-accent);
    color: #fff;
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 600;
    transition: all var(--transition);
}

.contact-phone-block .cpb-btn:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.contact-phone-block .cpb-btn svg { width: 20px; height: 20px; }

/* Contact info grid */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.contact-info-item {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all var(--transition);
}

.contact-info-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: rgba(243, 156, 18, 0.2);
}

.contact-info-item .cii-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(26, 82, 118, 0.08), rgba(243, 156, 18, 0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.contact-info-item .cii-icon svg { width: 26px; height: 26px; }

.contact-info-item .cii-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.contact-info-item .cii-value {
    font-size: 1.05rem;
    color: var(--color-text);
    font-weight: 600;
}

/* ============================================
   Scroll Animations
   ============================================ */

/* Fade in up - slides up while fading in */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Fade in - just opacity */
.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
}

/* Fade in left - slides in from left */
.fade-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Fade in right - slides in from right */
.fade-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Scale in - grows while fading in */
.scale-in {
    opacity: 0;
    transform: scale(0.92);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* Stagger delays for child elements */
.stagger > * {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.15s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.25s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.35s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.45s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.55s; }

.stagger.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    .fade-in-up,
    .fade-in,
    .fade-in-left,
    .fade-in-right,
    .scale-in,
    .stagger > * {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: var(--header-h);
        left: 0; right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        gap: 4px;
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        transition: transform var(--transition);
    }

    .nav-menu.open { transform: translateY(0); }
    .nav-menu a { padding: 14px 16px; border-radius: var(--radius); }
    .nav-toggle { display: flex; }

    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }
    .hero-arrow { display: none; }
    .hero-indicators { bottom: 24px; }

    .about-preview,
    .about-intro {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .biz-detail { margin-bottom: 56px; }

    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .section-title h2 { font-size: 1.8rem; }

    .service-flow {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .service-flow::before { display: none; }

    .contact-phone-block .cpb-number { font-size: 2.2rem; }
}

@media (max-width: 600px) {
    .container { padding: 0 16px; }

    .hero { min-height: 540px; }
    .hero h1 { font-size: 1.9rem; }
    .hero p { font-size: 0.95rem; }
    .hero-note .note-num { font-size: 1.4rem; }
    .hero-content { padding-top: calc(var(--header-h) + 50px); padding-bottom: 70px; }

    .section { padding: 56px 0; }

    .page-hero h1 { font-size: 2rem; }
    .section-title h2 { font-size: 1.6rem; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .biz-detail-features { grid-template-columns: 1fr; }
    .service-flow { grid-template-columns: 1fr; gap: 24px; }

    .capability-chain { flex-direction: column; gap: 16px; }
    .cap-arrow { transform: rotate(90deg); padding: 4px 0; }
    .cap-node { max-width: 100%; }

    .news-bar { padding: 12px 16px; gap: 10px; }
    .news-list { padding: 6px 16px 12px; }
    .news-item { flex-wrap: wrap; gap: 6px 12px; padding: 12px 4px; }
    .news-date { margin-left: auto; }

    .contact-phone-block { padding: 40px 24px; }
    .contact-phone-block .cpb-number { font-size: 1.8rem; letter-spacing: 1px; }

    .about-visual-card { padding: 40px 32px; }
    .about-visual-card .avc-big { font-size: 3rem; }
}

/* ============================================
   Product Gallery (典型装置图鉴)
   ============================================ */

.sys-note {
    max-width: 920px;
    margin: -8px auto 24px;
    text-align: center;
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.7;
    background: rgba(243, 156, 18, 0.08);
    border: 1px solid rgba(243, 156, 18, 0.22);
    border-radius: 10px;
    padding: 14px 22px;
}

.product-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    max-width: 1100px;
    margin: 0 auto;
}

.product-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(243, 156, 18, 0.25);
}

.product-img {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: linear-gradient(135deg, #f0f4f7, #e2e8ed);
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* 底部柔化层（弱化第三方图水印） */
.product-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(255,255,255,0.35) 100%);
    pointer-events: none;
}

.product-brand {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 4px 12px;
    color: #fff;
    font-size: 0.72rem;
    font-weight: 600;
    border-radius: 4px;
    letter-spacing: 1px;
    z-index: 2;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.product-brand.brand-xj { background: #1a5276; }
.product-brand.brand-nr { background: #c0392b; }
.product-brand.brand-nz { background: #16a085; }
.product-brand.brand-other { background: #7f8c8d; }

.product-card.placeholder .product-img {
    background: linear-gradient(135deg, #1a5276, #0e3a52);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.55);
}

.product-card.placeholder .product-img svg {
    width: 70%;
    height: 70%;
    max-width: 180px;
}

.product-card.placeholder .product-brand {
    background: rgba(255,255,255,0.18);
    color: #fff;
}

.product-meta {
    padding: 14px 16px 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-meta h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 6px;
    line-height: 1.4;
}

.product-meta p {
    font-size: 0.82rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

@media (max-width: 968px) {
    .product-gallery { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 720px) {
    .product-gallery { grid-template-columns: repeat(2, 1fr); }
    .sys-note { font-size: 0.88rem; padding: 12px 18px; }
}

@media (max-width: 480px) {
    .product-gallery { grid-template-columns: 1fr; }
}

/* ---- 厂家分组 ---- */
.product-group {
    margin-bottom: 36px;
}

.product-group:last-child {
    margin-bottom: 0;
}

.product-group-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 16px;
    padding: 0 0 10px;
    border-bottom: 1px solid var(--color-border);
}

.product-group-title small {
    font-size: 0.78rem;
    color: var(--color-text-light);
    font-weight: 500;
    margin-left: auto;
    letter-spacing: 0;
}

.pgi {
    display: inline-block;
    width: 6px;
    height: 22px;
    border-radius: 2px;
}

.pgi-xj { background: #1a5276; }
.pgi-nr { background: #c0392b; }
.pgi-nz { background: #16a085; }
.pgi-other { background: #95a5a6; }