/* ========================================
   魔思科技官网 - 主样式（黑红高端科技风）
   ======================================== */

:root {
    --bg-primary: #0A0A0A;
    --bg-secondary: #121212;
    --bg-card: #1A1A1A;
    --bg-elevated: #1E1E1E;
    --bg-tertiary: #252525;
    --brand: #E50914;
    --brand-light: #FF1744;
    --brand-dark: #D50000;
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-tertiary: #707070;
    --divider: #2A2A2A;
    --brand-gradient: linear-gradient(135deg, #FF1744 0%, #D50000 100%);
    --card-glow: 0 20px 60px rgba(229, 9, 20, 0.25);
    --header-bg: rgba(10, 10, 10, 0.75);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --title-gradient: linear-gradient(135deg, #FFFFFF 0%, #F5F5F5 60%, #FF1744 100%);
}

body.light-theme,
html.light-theme body {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F7F8FA;
    --bg-card: #FFFFFF;
    --bg-elevated: #F5F6F8;
    --bg-tertiary: #EEF0F3;
    --brand: #C62828;
    --brand-light: #E53935;
    --brand-dark: #B71C1C;
    --text-primary: #1A1A1A;
    --text-secondary: #5C6370;
    --text-tertiary: #8A9099;
    --divider: #E8EBF0;
    --brand-gradient: linear-gradient(135deg, #E53935 0%, #B71C1C 100%);
    --card-glow: 0 20px 60px rgba(198, 40, 40, 0.12);
    --header-bg: rgba(255, 255, 255, 0.92);
    --card-shadow: 0 8px 32px rgba(15, 23, 42, 0.06);
    --title-gradient: linear-gradient(135deg, #1A1A1A 0%, #2C2C2C 55%, #C62828 100%);
}

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

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

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    border: none;
    font-family: inherit;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--brand-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(229, 9, 20, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(229, 9, 20, 0.55);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--bg-tertiary);
}

.btn-secondary:hover {
    background: rgba(229, 9, 20, 0.1);
    border-color: var(--brand);
    color: var(--brand);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 14px 36px;
    font-size: 1.125rem;
}

/* Section Common */
.section {
    padding: 80px 0;
}

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

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.section-title-left {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--divider);
    transition: all 0.3s ease;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo-img {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    object-fit: contain;
}

.logo-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
}

.logo-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.nav-desktop {
    display: flex;
    align-items: center;
    gap: 28px;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--brand);
    background: rgba(229, 9, 20, 0.1);
}

.theme-toggle .theme-icon-dark {
    display: none;
}

.theme-toggle .theme-icon-light {
    display: block;
}

body.light-theme .theme-toggle .theme-icon-dark,
html.light-theme body .theme-toggle .theme-icon-dark {
    display: block;
}

body.light-theme .theme-toggle .theme-icon-light,
html.light-theme body .theme-toggle .theme-icon-light {
    display: none;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--brand);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--brand-gradient);
    border-radius: 1px;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
}

.lang-link {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.lang-link.active,
.lang-link:hover {
    color: var(--brand);
}

.lang-divider {
    color: var(--divider);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: all 0.3s;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -320px;
    width: 320px;
    height: 100vh;
    background: var(--bg-secondary);
    z-index: 1100;
    padding: 24px;
    transition: right 0.3s ease;
    box-shadow: -4px 0 24px rgba(0,0,0,0.5);
    border-left: 1px solid var(--divider);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--divider);
}

.mobile-menu-header .logo-text {
    color: var(--text-primary);
    font-weight: 700;
}

.menu-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
}

.nav-mobile {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-mobile .nav-link {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-primary);
}

.nav-mobile .nav-link:hover,
.nav-mobile .nav-link.active {
    background: rgba(229, 9, 20, 0.12);
    color: var(--brand);
}

.nav-mobile .btn {
    margin-top: 16px;
}

.mobile-lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--divider);
}

.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: var(--bg-primary);
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(229, 9, 20, 0.28) 0%, transparent 65%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -15%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(255, 23, 68, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-content {
    max-width: 760px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(229, 9, 20, 0.12);
    border: 1px solid rgba(229, 9, 20, 0.4);
    color: var(--brand);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
    background: var(--title-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

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

/* Features / Business Section */
.features {
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    padding: 40px 32px;
    border-radius: 16px;
    border: 1px solid var(--divider);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(229, 9, 20, 0.5);
    box-shadow: var(--card-glow);
}

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

.feature-card-highlight {
    background: linear-gradient(135deg, rgba(229, 9, 20, 0.12) 0%, var(--bg-card) 100%);
    border-color: rgba(229, 9, 20, 0.4);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(229, 9, 20, 0.12);
    border: 1px solid rgba(229, 9, 20, 0.3);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--brand);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.feature-link {
    color: var(--brand);
    font-size: 0.9375rem;
    font-weight: 600;
    transition: all 0.2s;
}

.feature-link:hover {
    color: var(--brand-light);
    letter-spacing: 0.5px;
}

/* Stats Section */
.stats {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 64px 0;
    border-top: 1px solid var(--divider);
    border-bottom: 1px solid var(--divider);
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(229, 9, 20, 0.12) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.stat-item {
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -16px;
    top: 20%;
    bottom: 20%;
    width: 1px;
    background: var(--divider);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
    line-height: 1.1;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Cases Section */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--divider);
    transition: all 0.3s ease;
    display: block;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    position: relative;
}

.case-card:hover {
    transform: translateY(-6px);
    border-color: rgba(229, 9, 20, 0.5);
    box-shadow: var(--card-glow);
}

.case-card:hover .case-link {
    color: var(--brand-light);
    letter-spacing: 0.5px;
}

.case-image {
    height: 200px;
    background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--brand-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    position: relative;
    overflow: hidden;
}

/* 案例卡片 - 二维码悬浮显示 */
.case-qr-hover {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.78);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 2;
}

.case-card:hover .case-qr-hover {
    opacity: 1;
    visibility: visible;
}

.case-qr-hover-inner {
    text-align: center;
    transform: translateY(8px);
    transition: transform 0.3s ease;
}

.case-card:hover .case-qr-hover-inner {
    transform: translateY(0);
}

.case-qr-hover-inner img {
    width: 140px;
    height: 140px;
    object-fit: contain;
    background: #FFFFFF;
    border-radius: 12px;
    padding: 8px;
    margin: 0 auto 10px;
    display: block;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.case-qr-hover-text {
    display: block;
    color: #FFFFFF;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.case-content {
    padding: 24px;
}

.case-client {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.case-category {
    display: inline-block;
    background: rgba(229, 9, 20, 0.12);
    color: var(--brand);
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 12px;
    border: 1px solid rgba(229, 9, 20, 0.25);
}

.case-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    line-height: 1.4;
}

.case-summary {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.case-link {
    color: var(--brand);
    font-size: 0.9375rem;
    font-weight: 600;
    transition: all 0.2s;
}

.case-link:hover {
    color: var(--brand-light);
}

/* Blog Section */
.blog {
    background: var(--bg-primary);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.blog-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--divider);
    transition: all 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-6px);
    border-color: rgba(229, 9, 20, 0.5);
    box-shadow: var(--card-glow);
}

.blog-image {
    height: 180px;
    background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--brand) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
}

.blog-content {
    padding: 24px;
}

.blog-category {
    display: inline-block;
    background: rgba(229, 9, 20, 0.12);
    color: var(--brand);
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 12px;
    border: 1px solid rgba(229, 9, 20, 0.25);
}

.blog-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    line-height: 1.5;
}

.blog-summary {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--divider);
}

.blog-date {
    color: var(--text-secondary);
}

.blog-link {
    color: var(--brand);
    font-size: 0.9375rem;
    font-weight: 600;
    transition: all 0.2s;
}

.blog-link:hover {
    color: var(--brand-light);
}

/* Solutions Page */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.solution-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--divider);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-6px);
    border-color: rgba(229, 9, 20, 0.5);
    box-shadow: var(--card-glow);
}

.solution-cover {
    height: 140px;
    background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--brand-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.85);
}

.solution-body {
    padding: 28px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.solution-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.solution-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.solution-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.solution-features li {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    padding-left: 22px;
    position: relative;
}

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

.solution-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 16px 0;
    margin-bottom: 20px;
    border-top: 1px solid var(--divider);
    border-bottom: 1px solid var(--divider);
}

.solution-price,
.solution-cycle {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.solution-price span,
.solution-cycle span {
    color: var(--brand);
    font-weight: 700;
}

.solution-btn {
    margin-top: auto;
    width: 100%;
}

/* FAQ Page */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--divider);
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(229, 9, 20, 0.4);
}

.faq-item.active {
    border-color: rgba(229, 9, 20, 0.6);
    box-shadow: 0 8px 24px rgba(229, 9, 20, 0.15);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.2s;
}

.faq-question:hover {
    color: var(--brand);
}

.faq-toggle {
    flex-shrink: 0;
    color: var(--brand);
    transition: transform 0.3s ease;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    padding: 0 24px;
}

.faq-item.active .faq-answer {
    max-height: 400px;
    padding: 0 24px 20px;
}

.faq-answer p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.8;
}

/* CTA Section */
.cta {
    background: var(--bg-secondary);
    color: var(--text-primary);
    text-align: center;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    border-top: 1px solid var(--divider);
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(229, 9, 20, 0.2) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.cta .container {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--title-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cta-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta .btn-primary {
    font-size: 1.125rem;
    padding: 14px 36px;
}

/* About Page */
.about-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.about-intro-image {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--divider);
    aspect-ratio: 4 / 3;
    background: var(--bg-card);
}

.about-intro-text p {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-intro-text .btn {
    margin-top: 8px;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--brand) 0%, var(--divider) 100%);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    margin-bottom: 48px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-content {
    width: 45%;
    padding: 24px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--divider);
    transition: all 0.3s;
}

.timeline-content:hover {
    border-color: rgba(229, 9, 20, 0.5);
    box-shadow: 0 8px 24px rgba(229, 9, 20, 0.15);
}

.timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: var(--brand-gradient);
    color: white;
    padding: 6px 16px;
    border-radius: 100px;
    font-weight: 700;
    font-size: 0.875rem;
    box-shadow: 0 4px 12px rgba(229, 9, 20, 0.4);
}

.timeline-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.timeline-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* Team */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.team-card {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--divider);
    transition: all 0.3s;
}

.team-card:hover {
    box-shadow: var(--card-glow);
    transform: translateY(-6px);
    border-color: rgba(229, 9, 20, 0.5);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--brand-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: white;
    font-size: 2rem;
    font-weight: 700;
    box-shadow: 0 8px 24px rgba(229, 9, 20, 0.35);
}

.team-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.team-position {
    color: var(--brand);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Values */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.value-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--divider);
    transition: all 0.3s;
}

.value-card:hover {
    border-color: rgba(229, 9, 20, 0.5);
    transform: translateY(-4px);
}

.value-icon {
    width: 64px;
    height: 64px;
    background: rgba(229, 9, 20, 0.12);
    border: 1px solid rgba(229, 9, 20, 0.3);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--brand);
}

.value-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.value-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* Cases Detail */
.case-detail-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--divider);
    margin-bottom: 24px;
}

.case-detail-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 20px;
}

.case-detail-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.case-detail-result {
    background: rgba(229, 9, 20, 0.12);
    color: var(--brand);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid rgba(229, 9, 20, 0.25);
}

.case-detail-content {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--divider);
}

.contact-info-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-info-icon {
    width: 44px;
    height: 44px;
    background: rgba(229, 9, 20, 0.12);
    border: 1px solid rgba(229, 9, 20, 0.3);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand);
    flex-shrink: 0;
}

.contact-info-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.contact-info-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.contact-form-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--divider);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-label .required {
    color: var(--brand);
    margin-left: 2px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--divider);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--bg-elevated);
    color: var(--text-primary);
}

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

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(229, 9, 20, 0.15);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit {
    width: 100%;
}

/* Map */
.map-container {
    width: 100%;
    height: 240px;
    background: var(--bg-elevated);
    border: 1px solid var(--divider);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-secondary);
    margin-top: 24px;
}

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--brand-gradient);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 100;
    color: white;
    box-shadow: 0 4px 20px rgba(229, 9, 20, 0.4);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(229, 9, 20, 0.6);
}

/* Footer */
.footer {
    background: var(--bg-primary);
    color: var(--text-secondary);
    padding: 64px 0 0;
    border-top: 1px solid var(--divider);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link-wrapper {
    position: relative;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.social-link:hover {
    background: var(--brand-gradient);
    color: white;
    transform: translateY(-2px);
}

.social-tooltip {
    position: absolute;
    bottom: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--bg-card);
    border: 1px solid var(--divider);
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
    min-width: 160px;
    text-align: center;
}

.social-link-wrapper:hover .social-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.social-tooltip-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.social-qrcode {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 8px;
    background: white;
    padding: 4px;
}

.footer-title {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--brand);
}

.footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.9375rem;
}

.footer-contact svg {
    color: var(--brand);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-bottom {
    border-top: 1px solid var(--divider);
    padding: 24px 0;
    text-align: center;
    font-size: 0.875rem;
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* Page Header */
.page-header {
    padding: 140px 0 60px;
    background: var(--bg-primary);
    color: var(--text-primary);
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--divider);
}

.page-header::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(229, 9, 20, 0.22) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 23, 68, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    background: var(--title-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--divider);
    background: var(--bg-card);
    color: var(--text-secondary);
    transition: all 0.2s;
    font-family: inherit;
}

.filter-tab:hover,
.filter-tab.active {
    background: var(--brand-gradient);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(229, 9, 20, 0.35);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.pagination-btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--divider);
    background: var(--bg-card);
    color: var(--text-primary);
    transition: all 0.2s;
}

.pagination-btn:hover {
    background: var(--brand-gradient);
    color: white;
    border-color: transparent;
}

.pagination-info {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* Solution Detail */
.solution-detail {
    max-width: 900px;
    margin: 0 auto;
}

.solution-content {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--divider);
}

.solution-content h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.solution-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.solution-content ul {
    padding-left: 0;
}

.solution-content li {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    padding-left: 24px;
    position: relative;
    margin-bottom: 8px;
}

.solution-content li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: var(--brand-gradient);
    border-radius: 50%;
}

.solution-pricing {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.solution-pricing div {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Case Detail */
.case-detail {
    max-width: 900px;
    margin: 0 auto;
}

.case-client-info {
    margin-bottom: 16px;
}

.case-client-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-right: 8px;
}

.case-client-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.case-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.case-tag {
    display: inline-block;
    background: rgba(229, 9, 20, 0.12);
    color: var(--brand);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid rgba(229, 9, 20, 0.25);
}

.case-meta {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--divider);
}

.case-content {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--divider);
    margin-bottom: 24px;
}

.case-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
}

.case-results {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 32px;
    border: 1px solid var(--divider);
}

.case-results h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.case-results ul {
    padding-left: 0;
}

.case-results li {
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.8;
    padding-left: 24px;
    position: relative;
    margin-bottom: 8px;
}

.case-results li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: var(--brand-gradient);
    border-radius: 50%;
}

/* 案例详情页 - 二维码扫码体验卡片 */
.case-qr-card {
    margin-top: 32px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(229, 9, 20, 0.06) 0%, var(--bg-card) 100%);
    border: 1px solid rgba(229, 9, 20, 0.2);
    padding: 32px;
    position: relative;
    overflow: hidden;
}

.case-qr-card::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(229, 9, 20, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.case-qr-card-inner {
    display: flex;
    align-items: center;
    gap: 40px;
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
    justify-content: center;
}

.case-qr-image-wrap {
    flex-shrink: 0;
    width: 200px;
    height: 200px;
    background: #FFFFFF;
    border-radius: 16px;
    padding: 12px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

.case-qr-image-wrap:hover {
    transform: scale(1.03);
}

.case-qr-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
    display: block;
}

.case-qr-info {
    flex: 1;
    min-width: 260px;
    max-width: 460px;
}

.case-qr-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.case-qr-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 22px;
    background: var(--brand-gradient);
    border-radius: 2px;
}

.case-qr-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-qr-tips {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.case-qr-tip-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--brand);
    font-size: 0.875rem;
    font-weight: 500;
    background: rgba(229, 9, 20, 0.08);
    padding: 6px 12px;
    border-radius: 100px;
    border: 1px solid rgba(229, 9, 20, 0.15);
}

/* Article Detail */
.article-detail {
    max-width: 800px;
    margin: 0 auto;
}

.article-meta {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.article-category {
    display: inline-block;
    background: rgba(229, 9, 20, 0.12);
    color: var(--brand);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid rgba(229, 9, 20, 0.25);
}

.article-author {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.article-date {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.article-views {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.article-content {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--divider);
    margin-bottom: 24px;
}

.article-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.article-content h1,
.article-content h2,
.article-content h3 {
    color: var(--text-primary);
    margin-bottom: 16px;
}

.article-content h1 { font-size: 1.75rem; }
.article-content h2 { font-size: 1.5rem; }
.article-content h3 { font-size: 1.25rem; }

.article-tags {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.article-tag {
    display: inline-block;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.875rem;
}

/* Error Page */
.error-page {
    text-align: center;
    padding: 60px 20px;
}

.error-page svg {
    width: 120px;
    height: 120px;
    color: var(--brand);
    margin-bottom: 24px;
}

.error-page h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.error-page p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 24px;
}

/* Contact Info */
.contact-section {
    padding-bottom: 60px;
}

.contact-info {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--divider);
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 20px;
    font-size: 1rem;
    color: var(--text-secondary);
}

.contact-item svg {
    width: 20px;
    height: 20px;
    color: var(--brand);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-form {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--divider);
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.contact-form label {
    display: block;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--divider);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--bg-elevated);
    color: var(--text-primary);
    margin-bottom: 20px;
}

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

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(229, 9, 20, 0.15);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

/* Alert Messages */
.alert {
    position: fixed;
    top: 100px;
    right: 32px;
    padding: 16px 24px;
    border-radius: 10px;
    font-size: 0.9375rem;
    font-weight: 500;
    z-index: 1000;
    animation: slideIn 0.3s ease;
    max-width: 400px;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.alert-success {
    background: rgba(0, 200, 83, 0.15);
    color: #00C853;
    border: 1px solid rgba(0, 200, 83, 0.3);
}

.alert-error {
    background: rgba(229, 9, 20, 0.15);
    color: #FF1744;
    border: 1px solid rgba(229, 9, 20, 0.3);
}

/* Products Page */
.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--divider);
    border-radius: 16px;
    padding: 40px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--card-glow);
    border-color: var(--brand);
}

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

.product-icon {
    width: 72px;
    height: 72px;
    background: rgba(229, 9, 20, 0.12);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand);
    margin-bottom: 24px;
}

.product-tag {
    position: absolute;
    top: 24px;
    right: 24px;
    background: var(--brand-gradient);
    color: white;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-tag-coming {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.product-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.product-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.product-features {
    margin-bottom: 32px;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.product-features li svg {
    color: var(--brand);
    flex-shrink: 0;
}

.product-card .btn {
    width: 100%;
}

/* 魔思云品牌横幅 */
.brand-banner {
    background: linear-gradient(135deg, rgba(229, 9, 20, 0.08) 0%, var(--bg-card) 100%);
    border: 1px solid rgba(229, 9, 20, 0.25);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 56px;
    position: relative;
    overflow: hidden;
}

.brand-banner::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(229, 9, 20, 0.18) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.brand-banner-content {
    display: flex;
    align-items: center;
    gap: 32px;
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
}

.brand-banner-icon {
    width: 96px;
    height: 96px;
    background: var(--brand-gradient);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 12px 32px rgba(229, 9, 20, 0.3);
}

.brand-banner-text {
    flex: 1;
    min-width: 280px;
}

.brand-banner-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.brand-banner-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
}

.brand-banner-btn {
    flex-shrink: 0;
}

/* 产品品牌标签 */
.product-brand-tag {
    display: inline-block;
    background: var(--brand-gradient);
    color: white;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

/* 即将推出的产品卡片 */
.product-card-coming {
    opacity: 0.92;
}

.product-card-coming .product-icon {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--divider);
}

/* 产品标签文字 */
.product-tag-text {
    display: inline-block;
}

/* 更多产品提示 */
.products-more {
    text-align: center;
    padding: 48px 24px;
    margin-top: 40px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px dashed var(--divider);
}

.products-more-icon {
    width: 64px;
    height: 64px;
    background: var(--bg-card);
    border: 1px solid var(--divider);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: var(--text-secondary);
}

.products-more-text {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

.w-full {
    width: 100%;
}

/* Contact WeChat */
.contact-wechat {
    align-items: flex-start !important;
}

.contact-wechat-info {
    position: relative;
    flex: 1;
}

.contact-wechat-qrcode {
    margin-top: 12px;
    padding: 8px;
    background: white;
    border-radius: 8px;
    display: inline-block;
}

.contact-wechat-qrcode img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    display: block;
}

/* CTA Section */
.cta {
    padding: 80px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--divider);
    border-bottom: 1px solid var(--divider);
    text-align: center;
}

.cta-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.cta-desc {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Responsive */
@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: 1fr;
    }

    .product-card {
        padding: 28px;
    }

    .product-title {
        font-size: 1.25rem;
    }

    .cta-title {
        font-size: 1.5rem;
    }

    .logo-text {
        font-size: 1rem;
    }

    .logo-img {
        width: 32px;
        height: 32px;
    }
}

/* ========================================
   白天模式专属优化（精致大气）
   ======================================== */
body.light-theme .hero::before,
html.light-theme body .hero::before {
    background: radial-gradient(circle, rgba(198, 40, 40, 0.10) 0%, transparent 65%);
}

body.light-theme .hero::after,
html.light-theme body .hero::after {
    background: radial-gradient(circle, rgba(229, 57, 53, 0.06) 0%, transparent 70%);
}

body.light-theme .hero-badge,
html.light-theme body .hero-badge {
    background: rgba(198, 40, 40, 0.08);
    border-color: rgba(198, 40, 40, 0.25);
}

body.light-theme .header,
html.light-theme body .header {
    box-shadow: 0 1px 12px rgba(15, 23, 42, 0.04);
}

body.light-theme .stats::before,
html.light-theme body .stats::before {
    background: radial-gradient(circle, rgba(198, 40, 40, 0.05) 0%, transparent 70%);
}

body.light-theme .cta::before,
html.light-theme body .cta::before {
    background: radial-gradient(circle, rgba(198, 40, 40, 0.07) 0%, transparent 70%);
}

body.light-theme .page-header::before,
html.light-theme body .page-header::before {
    background: radial-gradient(circle, rgba(198, 40, 40, 0.08) 0%, transparent 70%);
}

body.light-theme .page-header::after,
html.light-theme body .page-header::after {
    background: radial-gradient(circle, rgba(229, 57, 53, 0.05) 0%, transparent 70%);
}

/* 白天模式：卡片增加精致阴影与层次感 */
body.light-theme .feature-card,
html.light-theme body .feature-card {
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}

body.light-theme .feature-card:hover,
html.light-theme body .feature-card:hover {
    box-shadow: 0 16px 40px rgba(198, 40, 40, 0.12);
    border-color: rgba(198, 40, 40, 0.35);
}

body.light-theme .feature-card-highlight,
html.light-theme body .feature-card-highlight {
    background: linear-gradient(135deg, rgba(198, 40, 40, 0.06) 0%, var(--bg-card) 100%);
    border-color: rgba(198, 40, 40, 0.25);
}

body.light-theme .case-card,
html.light-theme body .case-card,
body.light-theme .blog-card,
html.light-theme body .blog-card,
body.light-theme .solution-card,
html.light-theme body .solution-card,
body.light-theme .product-card,
html.light-theme body .product-card,
body.light-theme .contact-info-card,
html.light-theme body .contact-info-card,
body.light-theme .contact-form-card,
html.light-theme body .contact-form-card,
body.light-theme .article-content,
html.light-theme body .article-content,
body.light-theme .case-content,
html.light-theme body .case-content,
body.light-theme .case-results,
html.light-theme body .case-results,
body.light-theme .solution-content,
html.light-theme body .solution-content,
body.light-theme .contact-info,
html.light-theme body .contact-info,
body.light-theme .contact-form,
html.light-theme body .contact-form,
body.light-theme .case-detail-card,
html.light-theme body .case-detail-card {
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}

body.light-theme .case-card:hover,
html.light-theme body .case-card:hover,
body.light-theme .blog-card:hover,
html.light-theme body .blog-card:hover,
body.light-theme .solution-card:hover,
html.light-theme body .solution-card:hover,
body.light-theme .product-card:hover,
html.light-theme body .product-card:hover {
    box-shadow: 0 16px 40px rgba(198, 40, 40, 0.12);
    border-color: rgba(198, 40, 40, 0.35);
}

/* 白天模式：分类标签/图标背景色调匹配 */
body.light-theme .blog-category,
html.light-theme body .blog-category,
body.light-theme .case-category,
html.light-theme body .case-category,
body.light-theme .article-category,
html.light-theme body .article-category,
body.light-theme .case-tag,
html.light-theme body .case-tag,
body.light-theme .case-detail-result,
html.light-theme body .case-detail-result {
    background: rgba(198, 40, 40, 0.08);
    border-color: rgba(198, 40, 40, 0.2);
}

body.light-theme .feature-icon,
html.light-theme body .feature-icon,
body.light-theme .value-icon,
html.light-theme body .value-icon,
body.light-theme .contact-info-icon,
html.light-theme body .contact-info-icon,
body.light-theme .product-icon,
html.light-theme body .product-icon {
    background: rgba(198, 40, 40, 0.08);
    border-color: rgba(198, 40, 40, 0.2);
}

body.light-theme .btn-secondary:hover,
html.light-theme body .btn-secondary:hover {
    background: rgba(198, 40, 40, 0.06);
}

body.light-theme .nav-mobile .nav-link:hover,
html.light-theme body .nav-mobile .nav-link:hover,
body.light-theme .nav-mobile .nav-link.active,
html.light-theme body .nav-mobile .nav-link.active {
    background: rgba(198, 40, 40, 0.08);
}

body.light-theme .theme-toggle:hover,
html.light-theme body .theme-toggle:hover {
    background: rgba(198, 40, 40, 0.08);
}

/* 白天模式：FAQ 交互态 */
body.light-theme .faq-item.active,
html.light-theme body .faq-item.active {
    box-shadow: 0 8px 24px rgba(198, 40, 40, 0.10);
}

body.light-theme .faq-item:hover,
html.light-theme body .faq-item:hover {
    border-color: rgba(198, 40, 40, 0.3);
}

body.light-theme .timeline-content:hover,
html.light-theme body .timeline-content:hover {
    box-shadow: 0 8px 24px rgba(198, 40, 40, 0.10);
}

body.light-theme .team-card:hover,
html.light-theme body .team-card:hover,
body.light-theme .value-card:hover,
html.light-theme body .value-card:hover {
    border-color: rgba(198, 40, 40, 0.3);
}

/* 白天模式：移动端遮罩更柔和 */
body.light-theme .mobile-overlay,
html.light-theme body .mobile-overlay {
    background: rgba(15, 23, 42, 0.4);
}

body.light-theme .mobile-menu,
html.light-theme body .mobile-menu {
    box-shadow: -4px 0 24px rgba(15, 23, 42, 0.12);
}

/* 白天模式：输入框背景与边框优化 */
body.light-theme .form-input,
html.light-theme body .form-input,
body.light-theme .form-textarea,
html.light-theme body .form-textarea,
body.light-theme .contact-form input,
html.light-theme body .contact-form input,
body.light-theme .contact-form textarea,
html.light-theme body .contact-form textarea {
    background: #FAFBFC;
    border-color: #DDE1E7;
}

body.light-theme .form-input:focus,
html.light-theme body .form-input:focus,
body.light-theme .form-textarea:focus,
html.light-theme body .form-textarea:focus,
body.light-theme .contact-form input:focus,
html.light-theme body .contact-form input:focus,
body.light-theme .contact-form textarea:focus,
html.light-theme body .contact-form textarea:focus {
    box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.12);
}

/* 白天模式：社交tooltip阴影更柔和 */
body.light-theme .social-tooltip,
html.light-theme body .social-tooltip {
    box-shadow: 0 8px 32px rgba(15, 23, 42, 0.12);
}

/* 白天模式：返回顶部按钮阴影 */
body.light-theme .back-to-top,
html.light-theme body .back-to-top {
    box-shadow: 0 4px 20px rgba(198, 40, 40, 0.25);
}

body.light-theme .back-to-top:hover,
html.light-theme body .back-to-top:hover {
    box-shadow: 0 8px 28px rgba(198, 40, 40, 0.4);
}

/* 白天模式：分隔线与次要文字更柔和 */
body.light-theme .stat-item:not(:last-child)::after,
html.light-theme body .stat-item:not(:last-child)::after {
    background: var(--divider);
}

/* 白天模式：筛选标签交互 */
body.light-theme .filter-tab:hover,
html.light-theme body .filter-tab:hover {
    border-color: rgba(198, 40, 40, 0.3);
    color: var(--brand);
}

body.light-theme .filter-tab.active,
html.light-theme body .filter-tab.active {
    box-shadow: 0 4px 14px rgba(198, 40, 40, 0.25);
}

/* 白天模式：分页按钮交互 */
body.light-theme .pagination-btn:hover,
html.light-theme body .pagination-btn:hover {
    box-shadow: 0 4px 14px rgba(198, 40, 40, 0.2);
}

/* 白天模式：品牌色按钮阴影 */
body.light-theme .btn-primary,
html.light-theme body .btn-primary {
    box-shadow: 0 4px 20px rgba(198, 40, 40, 0.25);
}

body.light-theme .btn-primary:hover,
html.light-theme body .btn-primary:hover {
    box-shadow: 0 8px 30px rgba(198, 40, 40, 0.4);
}

/* 白天模式：社交链接hover */
body.light-theme .social-link:hover,
html.light-theme body .social-link:hover {
    box-shadow: 0 6px 18px rgba(198, 40, 40, 0.25);
}

/* 白天模式：团队头像阴影 */
body.light-theme .team-avatar,
html.light-theme body .team-avatar {
    box-shadow: 0 8px 24px rgba(198, 40, 40, 0.25);
}

/* 白天模式：时间线年份标签阴影 */
body.light-theme .timeline-year,
html.light-theme body .timeline-year {
    box-shadow: 0 4px 12px rgba(198, 40, 40, 0.25);
}