/* ============================================
   安徽新网传媒有限公司 - 官网样式
   设计方向：蓝色商务风 · 白底 · 清爽专业
   ============================================ */

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

/* === Design Tokens === */
:root {
    --primary:      #1a5ccc;
    --primary-dark: #1549a8;
    --primary-light:#3b7aed;
    --primary-bg:   #eef3ff;
    --primary-fade: #f5f7ff;

    --accent:       #e8882a;

    --text-primary:   #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-tertiary:  #7a7a9a;

    --bg-base:        #ffffff;
    --bg-surface:     #f8fafc;
    --bg-surface-alt: #f0f4ff;
    --bg-hover:       #eef1f7;

    --border:         #e2e6ef;
    --border-light:   #eef1f7;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;

    --space-xs:  4px;
    --space-sm:  8px;
    --space-md:  12px;
    --space-lg:  16px;
    --space-xl:  24px;
    --space-2xl: 32px;
    --space-3xl: 48px;
    --space-4xl: 64px;
    --space-5xl: 80px;
    --space-6xl: 120px;

    --max-width: 1200px;
    --header-height: 64px;
    --radius: 8px;
    --radius-sm: 4px;
    --radius-lg: 12px;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --duration: 0.25s;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
    --shadow-primary: 0 4px 16px rgba(26,92,204,0.25);
}

/* === Base === */
body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-base);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--duration) var(--ease-out);
}

a:hover { color: var(--primary-dark); }

img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

::selection {
    background: var(--primary);
    color: #fff;
}

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

/* === Header === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: box-shadow var(--duration) var(--ease-out);
}

.site-header.scrolled {
    box-shadow: 0 1px 8px rgba(0,0,0,0.06);
}

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

/* === Logo === */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: opacity var(--duration) var(--ease-out);
}

.logo:hover { opacity: 0.85; }

.logo-img {
    height: 72px;
    width: auto;
    display: block;
    flex-shrink: 0;
    margin-top: 6px;
    transition: height var(--duration) var(--ease-out);
}

/* === Navigation === */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-menu a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 6px 0;
    position: relative;
    text-decoration: none;
    transition: color var(--duration) var(--ease-out);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
    transition: width var(--duration) var(--ease-out);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-cta {
    color: #fff !important;
    background: var(--primary) !important;
    padding: 8px 20px !important;
    border-radius: 6px !important;
    font-weight: 600 !important;
    font-size: 0.85rem !important;
    transition: all var(--duration) var(--ease-out) !important;
}

.nav-cta:hover {
    background: var(--primary-dark) !important;
    box-shadow: var(--shadow-primary);
    color: #fff !important;
    transform: translateY(-1px);
}

.nav-cta::after { display: none !important; }

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
    z-index: 1001;
}

.menu-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: all var(--duration) var(--ease-out);
}

.menu-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* === Hero === */
.hero {
    padding: calc(var(--header-height) + 60px) 0 80px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7ff 0%, #eef3ff 40%, #f8fafc 100%);
}

/* Decorative circles */
.hero::before {
    content: '';
    position: absolute;
    top: -15%;
    right: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(26,92,204,0.06), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(26,92,204,0.04), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
}

.hero-content .mono-label {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: var(--space-xl);
    letter-spacing: 0.04em;
}

.hero-content .mono-label::before {
    content: '';
    display: inline-block;
    width: 3px;
    height: 18px;
    background: var(--primary);
    border-radius: 2px;
    flex-shrink: 0;
}

.hero-content .mono-label span {
    color: var(--text-tertiary);
    font-weight: 400;
}

.hero-content h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    line-height: 1.35;
    font-weight: 700;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
}

.hero-content .hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
    max-width: 540px;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.hero-tag {
    font-size: 0.85rem;
    font-weight: 500;
    padding: 6px 16px;
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-secondary);
    background: #fff;
    transition: all var(--duration) var(--ease-out);
}

.hero-tag:hover {
    border-color: var(--primary-light);
    color: var(--primary);
    background: var(--primary-fade);
}

.hero-buttons {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 28px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--duration) var(--ease-out);
    border: 1px solid transparent;
    text-decoration: none;
    font-family: var(--font-sans);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: var(--shadow-primary);
    color: #fff;
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary-fade);
    color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-dark {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-dark:hover {
    background: var(--bg-hover);
    border-color: var(--border);
    color: var(--text-primary);
}

/* === Hero Visual (feature card) === */
.hero-visual { position: relative; }

.hero-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 0;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-md);
}

.hero-card::before {
    content: '';
    display: block;
    height: 6px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

.hero-card-inner {
    padding: 28px;
}

.hero-card h3 {
    font-size: 0.9rem;
    margin-bottom: var(--space-xl);
    color: var(--primary);
    font-weight: 600;
}

.hero-card ul {
    display: grid;
    gap: var(--space-lg);
}

.hero-card li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.hero-card li::before {
    content: '\2713';
    color: var(--primary);
    font-weight: 700;
    flex-shrink: 0;
    font-size: 0.85rem;
    line-height: 1.7;
}

/* === Section Common === */
.section {
    padding: var(--space-6xl) 0;
}

.section-surface {
    background: var(--bg-surface);
}

.section-header {
    margin-bottom: var(--space-4xl);
}

.section-header .mono-label {
    display: inline-block;
    background: var(--primary-bg);
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: var(--space-md);
    letter-spacing: 0.02em;
}

.section-header .mono-label::before {
    display: none;
}

.section-header h2 {
    font-size: clamp(1.6rem, 3vw, 2.15rem);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-weight: 700;
    line-height: 1.3;
}

.section-header p {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 580px;
    line-height: 1.8;
}

/* === Stats Bar === */
.stats-bar {
    background: #fff;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    padding: var(--space-4xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
    text-align: center;
}

.stat-item {
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: calc(var(--space-2xl) * -0.5);
    top: 20%;
    height: 60%;
    width: 1px;
    background: var(--border-light);
}

.stat-num {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

/* === Services Grid === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.services-grid-4 {
    display: grid;

.services-grid-6 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.service-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl) var(--space-2xl);
    transition: all var(--duration) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease-out);
}

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

.service-num {
    font-size: 0.75rem;
    color: var(--primary);
    margin-bottom: var(--space-lg);
    font-weight: 600;
}

.service-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-fade);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: var(--space-xl);
    transition: all var(--duration) var(--ease-out);
}

.service-card:hover .service-icon {
    background: var(--primary-bg);
}

.service-card h3 {
    font-size: 1.15rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    font-weight: 700;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.service-card .service-features {
    display: grid;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.service-card .service-features li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding-left: 18px;
    position: relative;
    line-height: 1.7;
}

.service-card .service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

.service-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap var(--duration) var(--ease-out);
}

.service-link:hover {
    gap: 12px;
    color: var(--primary-dark);
}

/* === Industry Cards === */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.industry-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space-2xl) var(--space-xl);
    text-align: center;
    transition: all var(--duration) var(--ease-out);
}

.industry-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.industry-icon {
    width: 44px;
    height: 44px;
    margin: 0 auto var(--space-lg);
    background: var(--primary-fade);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--duration) var(--ease-out);
}

.industry-card:hover .industry-icon {
    background: var(--primary-bg);
}

.industry-card h4 {
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    font-weight: 600;
}

.industry-card p {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    line-height: 1.6;
}

/* === Process Section === */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2xl);
    position: relative;
}

.process-grid::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: var(--border);
    z-index: 0;
}

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

.process-num {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-xl);
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--border);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    transition: all var(--duration) var(--ease-out);
}

.process-step:hover .process-num {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-primary);
}

.process-step h4 {
    font-size: 1rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    font-weight: 600;
}

.process-step p {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    line-height: 1.7;
}

/* === Advantage Section === */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.advantage-card {
    text-align: center;
    padding: var(--space-3xl) var(--space-2xl);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all var(--duration) var(--ease-out);
}

.advantage-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.advantage-card .advantage-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-xl);
    background: var(--primary-fade);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all var(--duration) var(--ease-out);
}

.advantage-card:hover .advantage-icon {
    background: var(--primary-bg);
}

.advantage-card h3 {
    font-size: 1.05rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    font-weight: 600;
}

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

/* === Cases Section === */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.cases-grid .case-card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    max-width: calc(50% - var(--space-xl) * 0.5);
    margin: 0 auto;
}

.case-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--duration) var(--ease-out);
}

.case-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.case-card-top {
    padding: var(--space-2xl) var(--space-2xl) var(--space-lg);
}

.case-industry {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 20px;
    background: var(--primary-bg);
    color: var(--primary);
    margin-bottom: var(--space-md);
    letter-spacing: 0.03em;
}

.case-client {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.case-before {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    line-height: 1.6;
    padding: var(--space-md);
    background: #fafafa;
    border-radius: var(--radius-sm);
    border-left: 3px solid #ddd;
}

.case-before strong {
    color: var(--text-secondary);
    font-weight: 600;
}

/* Dual Engine */
.case-engines {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.case-engine {
    padding: var(--space-xl);
    position: relative;
}

.case-engine:first-child {
    border-right: 1px solid var(--border-light);
}

.case-engine-head {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.case-engine-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.case-engine.offensive .case-engine-icon {
    background: #fff3e8;
}

.case-engine.defensive .case-engine-icon {
    background: var(--primary-bg);
}

.case-engine-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.case-engine.offensive .case-engine-label {
    color: var(--accent);
}

.case-engine.defensive .case-engine-label {
    color: var(--primary);
}

.case-engine-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.case-engine-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: var(--space-md);
}

.case-engine-metric {
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
}

.case-engine.offensive .case-engine-metric {
    background: #fff8f2;
    color: #c26e1a;
}

.case-engine.defensive .case-engine-metric {
    background: var(--primary-fade);
    color: var(--primary-dark);
}

.case-engine-metric-val {
    font-size: 1.1rem;
    font-weight: 800;
    line-height: 1;
}

.case-result-bar {
    padding: var(--space-lg) var(--space-2xl);
    background: linear-gradient(135deg, #f0faf0, #e8f5e9);
    border-top: 1px solid #c8e6c9;
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.case-result-icon {
    font-size: 1rem;
    flex-shrink: 0;
    line-height: 1.5;
}

.case-result-text {
    font-size: 0.85rem;
    color: #2e5a30;
    font-weight: 600;
    line-height: 1.5;
}

/* === FAQ Section === */
.faq-list {
    max-width: 780px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: var(--space-md);
    overflow: hidden;
    transition: all var(--duration) var(--ease-out);
    background: #fff;
}

.faq-item:hover {
    border-color: #cdd5e0;
}

.faq-item.active {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    padding: var(--space-xl) var(--space-2xl);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color var(--duration) var(--ease-out);
    user-select: none;
    background: #fff;
    border: none;
    width: 100%;
    text-align: left;
    font-family: var(--font-sans);
}

.faq-question:hover {
    color: var(--primary);
    background: var(--primary-fade);
}

.faq-question .faq-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform var(--duration) var(--ease-out);
    color: var(--primary);
    font-size: 1.1rem;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--space-2xl) var(--space-xl);
}

.faq-item.active .faq-answer {
    padding: 0 var(--space-2xl) var(--space-xl);
}

.faq-answer p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.9;
}

/* === Industry Tabs === */
.industry-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-3xl);
}

.industry-tab {
    padding: 10px 22px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-full);
    background: #fff;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--duration) var(--ease-out);
    white-space: nowrap;
}

.industry-tab:hover {
    border-color: var(--primary-light);
    color: var(--primary);
    background: var(--primary-bg);
}

.industry-tab.active {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
}

.industry-panel {
    display: none;
    animation: fadeIn 0.3s ease-out;
}
.industry-panel.active {
    display: block;
}

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

/* === Stage Section === */
.stage-section {
    margin-bottom: var(--space-3xl);
}

.stage-section:last-child {
    margin-bottom: 0;
}

.stage-header {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--border);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.stage-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 14px;
    font-size: 0.78rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    background: var(--primary-bg);
    color: var(--primary);
    flex-shrink: 0;
}

/* === FAQ Tag Labels === */
.faq-tag {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 9px;
    border-radius: 4px;
    margin-right: 8px;
    vertical-align: middle;
    letter-spacing: 0.04em;
    flex-shrink: 0;
}

.tag-geo {
    background: #e8f0fe;
    color: #1a5ccc;
}

.tag-media {
    background: #fff3e0;
    color: #e65100;
}

.tag-video {
    background: #fce4ec;
    color: #c62828;
}
.tag-monitor {     background: #e8f5e9;     color: #2e7d32; }

.faq-question {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    flex-wrap: wrap;
}

/* === CTA Banner === */
.cta-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: var(--space-5xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(255,255,255,0.08), transparent 70%);
    pointer-events: none;
}

.cta-banner h2 {
    font-size: clamp(1.6rem, 3vw, 2.15rem);
    margin-bottom: var(--space-lg);
    color: #fff;
    font-weight: 700;
    position: relative;
}

.cta-banner p {
    font-size: 1rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: var(--space-2xl);
    position: relative;
}

.cta-banner .btn-primary {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

.cta-banner .btn-primary:hover {
    background: rgba(255,255,255,0.9);
    color: var(--primary-dark);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.cta-banner .hero-buttons {
    justify-content: center;
    position: relative;
}

/* === Page Hero (inner pages) === */
.page-hero {
    padding: calc(var(--header-height) + 56px) 0 var(--space-5xl);
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-fade) 0%, var(--primary-bg) 40%, #f8fafc 100%);
    text-align: center;
    border-bottom: 1px solid var(--border-light);
}

.page-hero h1 {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    margin-bottom: var(--space-md);
    font-weight: 700;
    color: var(--text-primary);
    position: relative;
}

.page-hero p {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto;
    position: relative;
    line-height: 1.8;
}

/* Breadcrumb */
.breadcrumb {
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.85rem;
    color: var(--text-tertiary);
    background: var(--bg-surface);
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { margin: 0 var(--space-sm); color: var(--text-tertiary); }

/* === About Section === */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.about-text h2 {
    font-size: clamp(1.6rem, 3vw, 2.15rem);
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.3;
}

.about-text p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.9;
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.about-highlight {
    padding: var(--space-xl);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
    transition: all var(--duration) var(--ease-out);
}

.about-highlight:hover {
    border-left-color: var(--primary-dark);
    box-shadow: var(--shadow-sm);
}

.about-highlight h4 {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-weight: 600;
}

.about-highlight p {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    margin: 0;
    line-height: 1.6;
}

.about-visual {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.about-visual::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 160px;
    height: 160px;
    background: radial-gradient(circle at top right, rgba(26,92,204,0.06), transparent 70%);
    pointer-events: none;
}

.about-visual h3 {
    font-size: 0.9rem;
    margin-bottom: var(--space-2xl);
    color: var(--primary);
    font-weight: 600;
    position: relative;
}

.about-visual ul {
    display: grid;
    gap: var(--space-lg);
    position: relative;
}

.about-visual li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.about-visual li::before {
    content: '\2713';
    color: var(--primary);
    font-weight: 700;
    flex-shrink: 0;
    font-size: 0.85rem;
    line-height: 1.8;
}

/* === Contact Section === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
}

.contact-info h2 {
    font-size: clamp(1.6rem, 3vw, 2.15rem);
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
    font-weight: 700;
}

.contact-info > p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-3xl);
    line-height: 1.8;
}

.contact-items {
    display: grid;
    gap: var(--space-xl);
}

.contact-item {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.contact-item-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-fade);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    transition: all var(--duration) var(--ease-out);
}

.contact-item:hover .contact-item-icon {
    background: var(--primary-bg);
}

.contact-item-text h4 {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.contact-item-text p {
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.5;
}

.contact-form {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: var(--space-xl);
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-surface);
    transition: all var(--duration) var(--ease-out);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26,92,204,0.1);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237a7a9a' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.form-group textarea {
    resize: vertical;
    min-height: 90px;
}

.form-submit {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: 1px solid var(--primary);
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--duration) var(--ease-out);
    font-family: var(--font-sans);
}

.form-submit:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: var(--shadow-primary);
}

/* === Footer === */
.site-footer {
    background: #1a1a2e;
    padding: var(--space-5xl) 0 0;
    color: rgba(255,255,255,0.65);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-4xl);
    margin-bottom: var(--space-4xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-xl);
    display: inline-block;
}

.footer-brand .logo-img {
    height: 72px;
}

.footer-brand p {
    font-size: 0.85rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    max-width: 360px;
}

.footer-col h4 {
    color: rgba(255,255,255,0.5);
    font-size: 0.8rem;
    margin-bottom: var(--space-lg);
    font-weight: 500;
}

.footer-col ul {
    display: grid;
    gap: var(--space-md);
}

.footer-col a {
    color: rgba(255,255,255,0.55);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color var(--duration) var(--ease-out);
}

.footer-col a:hover { color: #fff; }

.footer-col li {
    color: rgba(255,255,255,0.55);
    font-size: 0.85rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: var(--space-xl) 0;
    text-align: center;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.4);
}

.footer-bottom p {
    margin-bottom: var(--space-xs);
}

.footer-bottom a {
    color: rgba(255,255,255,0.4);
    text-decoration: none;
    transition: color var(--duration) var(--ease-out);
}

.footer-bottom a:hover { color: rgba(255,255,255,0.7); }

.icp-number {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* === Scroll Reveal Animation === */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

[data-reveal-stagger] > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

[data-reveal-stagger].revealed > * {
    opacity: 1;
    transform: translateY(0);
}

[data-reveal-stagger].revealed > *:nth-child(1) { transition-delay: 0ms; }
[data-reveal-stagger].revealed > *:nth-child(2) { transition-delay: 80ms; }
[data-reveal-stagger].revealed > *:nth-child(3) { transition-delay: 160ms; }
[data-reveal-stagger].revealed > *:nth-child(4) { transition-delay: 240ms; }
[data-reveal-stagger].revealed > *:nth-child(5) { transition-delay: 320ms; }
[data-reveal-stagger].revealed > *:nth-child(6) { transition-delay: 400ms; }
[data-reveal-stagger].revealed > *:nth-child(7) { transition-delay: 480ms; }
[data-reveal-stagger].revealed > *:nth-child(8) { transition-delay: 560ms; }
[data-reveal-stagger].revealed > *:nth-child(9) { transition-delay: 640ms; }
[data-reveal-stagger].revealed > *:nth-child(10) { transition-delay: 720ms; }

/* === Team Section === */
.team-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    margin-top: var(--space-3xl);
    align-items: start;
}

.team-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    position: relative;
    transition: all var(--duration) var(--ease-out);
}

.team-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.team-card-icon {
    font-size: 1.8rem;
    margin-bottom: var(--space-lg);
    display: block;
}

.team-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.team-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* === Copyright Section (软件著作权) === */
.copyright-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-3xl);
}

.copyright-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    transition: all var(--duration) var(--ease-out);
}

.copyright-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.copyright-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary-bg);
    color: var(--primary);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: var(--space-lg);
    letter-spacing: 0.04em;
}

.copyright-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    line-height: 1.4;
}

.copyright-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.copyright-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.copyright-features span {
    display: inline-block;
    font-size: 0.78rem;
    color: var(--text-secondary);
    background: var(--bg-surface);
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid var(--border-light);
}

/* === Cert Section (资质认证) === */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-3xl);
}

.cert-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    transition: all var(--duration) var(--ease-out);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cert-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.cert-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    flex-shrink: 0;
}

.cert-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.5;
}

.cert-card p {
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.cert-issuer {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-bg);
    padding: 3px 10px;
    border-radius: 20px;
    margin-top: var(--space-lg);
}
@media (max-width: 968px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: var(--space-4xl);
    }
    .hero-content h1 { font-size: 1.9rem; }
    .about-content,
    .contact-grid { grid-template-columns: 1fr; gap: var(--space-3xl); }
    .services-grid, .services-grid-4, .services-grid-6 { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .cases-grid .case-card:last-child:nth-child(odd) {
        grid-column: auto;
        max-width: none;
        margin: 0;
    }
    .industries-grid { grid-template-columns: repeat(3, 1fr); }
    .process-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-3xl); }
    .process-grid::before { display: none; }
    .advantage-grid { grid-template-columns: 1fr; }
    .team-intro { grid-template-columns: 1fr; gap: var(--space-xl); }
    .copyright-grid { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-3xl); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-3xl); }
    .stat-item:not(:last-child)::after { display: none; }
}

@media (max-width: 768px) {
    .menu-toggle { display: flex; }
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: var(--space-2xl);
        gap: 0;
        transform: translateY(-150%);
        transition: transform var(--duration) var(--ease-out);
    }
    .nav-menu.open { transform: translateY(0); }
    .nav-menu a {
        width: 100%;
        padding: 14px 0;
        border-bottom: 1px solid var(--border-light);
        font-size: 0.9rem;
    }
    .nav-menu a::after { display: none; }
    .nav-cta { text-align: center; margin-top: var(--space-md); width: fit-content; }
    .hero { padding: calc(var(--header-height) + 32px) 0 var(--space-5xl); }
    .hero-content h1 { font-size: 1.5rem; }
    .hero-content .hero-subtitle { font-size: 0.95rem; }
    .section { padding: var(--space-5xl) 0; }
    .section-header h2,
    .about-text h2,
    .contact-info h2 { font-size: 1.4rem; }
    .page-hero h1 { font-size: 1.5rem; }
    .industries-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-num { font-size: 2rem; }
    .about-highlights { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .contact-form { padding: var(--space-2xl); }
    .hero-buttons { flex-direction: column; }
    .btn { text-align: center; justify-content: center; }
    .logo-img { height: 54px; }
    .industry-tabs { gap: var(--space-xs); }
    .industry-tab { padding: 8px 16px; font-size: 0.82rem; }
}

@media (max-width: 480px) {
    .industries-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 1.3rem; }
    .industry-tab { padding: 6px 12px; font-size: 0.75rem; }
}

/* === Utility === */
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }
.mb-40 { margin-bottom: 40px; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    [data-reveal] { opacity: 1; transform: none; }
}

.tag-web {
    background: #ede7f6;
    color: #4527a0;
}

.tag-shortvideo {
    background: #e0f7fa;
    color: #00838f;
}

/* ===== WeCom floating CTA ===== */
.wecom-float {
    position: fixed;
    right: 22px;
    bottom: 90px;
    z-index: 9990;
}
.wecom-float-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #07C160;
    color: #fff;
    padding: 13px 18px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 6px 20px rgba(7, 193, 96, 0.38);
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease;
}
.wecom-float-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 26px rgba(7, 193, 96, 0.5);
    color: #fff;
}
.wecom-float-btn svg { flex: none; }
@media (max-width: 768px) {
    .wecom-float { right: 14px; bottom: 70px; }
    .wecom-float-btn { padding: 11px 15px; font-size: 14px; }
}