/* ===========================
   爱智岛科创 - 公司官网样式
   =========================== */

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

:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-cyan: #06b6d4;
    --color-cyan-dark: #0891b2;
    --color-gold: #f59e0b;
    --color-purple: #8b5cf6;
    --color-green: #10b981;
    --color-red: #ef4444;
    
    --color-dark: #0a0e27;
    --color-dark-2: #111634;
    --color-dark-3: #1a2148;
    
    --color-light: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --gradient-dark: linear-gradient(180deg, #0a0e27 0%, #111634 100%);
    --gradient-hero: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.15), transparent 50%), radial-gradient(ellipse at bottom right, rgba(6, 182, 212, 0.1), transparent 50%);
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.3);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    --nav-height: 72px;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-gray-800);
    background: var(--color-light);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===========================
   导航栏
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: var(--transition);
}

.nav-logo:hover {
    transform: translateY(-1px);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.5px;
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-sub {
    font-size: 12px;
    font-weight: 400;
    color: var(--color-gray-400);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav-link {
    display: block;
    padding: 8px 14px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    color: #fff;
    background: rgba(59, 130, 246, 0.15);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===========================
   Hero 首屏
   =========================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--color-dark);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: float linear infinite;
}

@keyframes float {
    0% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: 120px 24px 80px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 100px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
    animation: fadeInUp 0.8s ease;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
    font-size: clamp(40px, 7vw, 80px);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.gradient-text {
    background: linear-gradient(135deg, #60a5fa 0%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-2 {
    background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-slogan {
    font-size: clamp(18px, 3vw, 26px);
    color: rgba(255, 255, 255, 0.85);
    font-weight: 400;
    margin-bottom: 20px;
    letter-spacing: 2px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-desc {
    font-size: clamp(15px, 2vw, 18px);
    color: rgba(255, 255, 255, 0.6);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 80px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.hero-stats {
    display: flex;
    gap: 40px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.hero-stat {
    text-align: center;
}

.stat-num {
    font-size: 42px;
    font-weight: 900;
    background: linear-gradient(135deg, #60a5fa, #06b6d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-plus {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-cyan);
}

.stat-label {
    display: block;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 4px;
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.3);
    font-size: 12px;
    animation: fadeInUp 1s ease 1s both;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   通用 Section
   =========================== */
.section {
    padding: 100px 0;
    position: relative;
}

.section-light {
    background: var(--color-light);
}

.section-dark {
    background: var(--gradient-dark);
    color: rgba(255, 255, 255, 0.8);
}

.section-gray {
    background: var(--color-gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--color-primary);
    margin-bottom: 12px;
    text-transform: uppercase;
}

.section-dark .section-tag {
    color: var(--color-cyan);
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    color: var(--color-gray-900);
    margin-bottom: 16px;
}

.section-dark .section-title {
    color: #fff;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 4px;
    margin: 0 auto 20px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--color-gray-500);
    max-width: 700px;
    margin: 0 auto;
}

.section-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.5);
}

/* ===========================
   关于我们
   =========================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-lead {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-gray-900);
    line-height: 1.6;
    margin-bottom: 20px;
}

.about-text p {
    color: var(--color-gray-600);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 32px;
}

.value-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.value-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.value-item:hover .value-icon {
    transform: translateY(-3px);
}

.value-item h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 4px;
}

.value-item p {
    font-size: 13px;
    color: var(--color-gray-500);
    margin: 0;
}

.about-visual {
    position: relative;
}

.about-card-glow {
    position: absolute;
    inset: -20px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    opacity: 0.15;
    filter: blur(40px);
    z-index: 0;
}

.about-card {
    position: relative;
    background: var(--color-dark);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 1;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 20px;
}

.card-pulse {
    width: 10px;
    height: 10px;
    background: var(--color-green);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.card-header span {
    color: #fff;
    font-weight: 600;
    font-size: 15px;
}

.card-body {
    margin-bottom: 24px;
}

.card-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    gap: 16px;
}

.card-row:last-child {
    border-bottom: none;
}

.card-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    white-space: nowrap;
    flex-shrink: 0;
}

.card-value {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    text-align: right;
    font-weight: 500;
}

.card-footer {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.card-tag {
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 100px;
    font-size: 12px;
    color: var(--color-cyan);
    font-weight: 500;
}

/* ===========================
   核心赛道
   =========================== */
.tracks-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.track-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition);
    cursor: pointer;
}

.track-card:hover {
    transform: translateY(-8px);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.track-bg {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: var(--transition);
}

.track-card[data-track="1"] .track-bg {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), transparent);
}

.track-card[data-track="2"] .track-bg {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), transparent);
}

.track-card[data-track="3"] .track-bg {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), transparent);
}

.track-card:hover .track-bg {
    opacity: 1;
}

.track-content {
    position: relative;
    padding: 36px 32px;
    z-index: 1;
}

.track-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition);
}

.track-card[data-track="1"] .track-icon {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.track-card[data-track="2"] .track-icon {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.track-card[data-track="3"] .track-icon {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.track-card:hover .track-icon {
    transform: scale(1.1) rotate(-5deg);
}

.track-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.track-content p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.7;
    margin-bottom: 20px;
}

.track-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.track-tags span {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 100px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

/* ===========================
   七大核心业务
   =========================== */
.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.business-card {
    position: relative;
    background: var(--color-light);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    overflow: hidden;
}

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

.business-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

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

.biz-number {
    position: absolute;
    top: 24px;
    right: 28px;
    font-size: 48px;
    font-weight: 900;
    color: var(--color-gray-100);
    line-height: 1;
    transition: var(--transition);
    z-index: 0;
}

.business-card:hover .biz-number {
    color: rgba(59, 130, 246, 0.08);
}

.biz-icon {
    position: relative;
    z-index: 1;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--color-gray-50);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.business-card:hover .biz-icon {
    transform: scale(1.1);
}

.business-card h3 {
    position: relative;
    z-index: 1;
    font-size: 18px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 12px;
}

.business-card p {
    position: relative;
    z-index: 1;
    font-size: 14px;
    color: var(--color-gray-500);
    line-height: 1.7;
}

/* ===========================
   OPC社区
   =========================== */
.communities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.community-card {
    background: var(--color-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.community-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.comm-image {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.comm-img-1 {
    background: linear-gradient(135deg, #3b82f6, #06b6d4);
}

.comm-img-2 {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.comm-img-3 {
    background: linear-gradient(135deg, #8b5cf6, #3b82f6);
}

.comm-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 40%, rgba(0, 0, 0, 0.4));
    display: flex;
    align-items: flex-end;
    padding: 20px;
}

.comm-location {
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.comm-body {
    padding: 28px 24px;
}

.comm-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.08);
    color: var(--color-primary);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.comm-body h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--color-gray-900);
    margin-bottom: 10px;
}

.comm-desc {
    font-size: 14px;
    color: var(--color-gray-500);
    line-height: 1.7;
    margin-bottom: 20px;
}

.comm-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.comm-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-gray-600);
}

.feature-icon {
    color: var(--color-cyan);
    font-size: 10px;
}

.comm-meta {
    display: flex;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--color-gray-100);
}

.comm-meta span {
    font-size: 12px;
    color: var(--color-gray-400);
    font-weight: 500;
}

/* ===========================
   产业生态
   =========================== */
.ecosystem-diagram {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto 60px;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.eco-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
}

.eco-core {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 60px rgba(59, 130, 246, 0.4);
    animation: ecoPulse 3s ease-in-out infinite;
}

.eco-core span {
    font-size: 18px;
    font-weight: 800;
    color: #fff;
}

.eco-core small {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 2px;
}

@keyframes ecoPulse {
    0%, 100% { box-shadow: 0 0 60px rgba(59, 130, 246, 0.4); }
    50% { box-shadow: 0 0 80px rgba(59, 130, 246, 0.6); }
}

.eco-orbit {
    position: absolute;
    width: 100%;
    height: 100%;
    animation: ecoRotate 30s linear infinite;
}

@keyframes ecoRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.eco-node {
    position: absolute;
    width: 160px;
    animation: ecoCounterRotate 30s linear infinite;
}

@keyframes ecoCounterRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(-360deg); }
}

.eco-node-1 {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.eco-node-2 {
    top: 35%;
    right: 0;
}

.eco-node-3 {
    bottom: 5%;
    right: 12%;
}

.eco-node-4 {
    bottom: 5%;
    left: 12%;
}

.eco-node-5 {
    top: 35%;
    left: 0;
}

.eco-node-inner {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.eco-node-inner:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(59, 130, 246, 0.3);
    transform: scale(1.05);
}

.eco-node-inner svg {
    margin-bottom: 8px;
}

.eco-node-inner h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
}

.eco-node-inner p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.5;
}

.eco-partners {
    text-align: center;
}

.partner-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.partner-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.partner-item {
    padding: 10px 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 100px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.partner-item:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: #fff;
    transform: translateY(-2px);
}

/* ===========================
   发展成果
   =========================== */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.achieve-card {
    text-align: center;
    padding: 32px 16px;
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-100);
    transition: var(--transition);
}

.achieve-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(59, 130, 246, 0.2);
}

.achieve-num {
    font-size: 40px;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
}

.achieve-label {
    font-size: 13px;
    color: var(--color-gray-500);
    line-height: 1.4;
}

.achieve-extra {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.achieve-extra-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--color-light);
    border: 1px solid var(--color-gray-200);
    border-radius: 100px;
    font-size: 14px;
    color: var(--color-gray-600);
    font-weight: 500;
}

.extra-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===========================
   新闻动态
   =========================== */
.news-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 24px;
}

.news-featured {
    grid-row: span 2;
}

.news-card {
    background: var(--color-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.news-image {
    height: 180px;
    position: relative;
    overflow: hidden;
}

.news-featured .news-image {
    height: 280px;
}

.news-img-1 {
    background: linear-gradient(135deg, #3b82f6, #06b6d4);
}

.news-img-2 {
    background: linear-gradient(135deg, #10b981, #06b6d4);
}

.news-img-3 {
    background: linear-gradient(135deg, #8b5cf6, #3b82f6);
}

.news-img-4 {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.news-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-gray-800);
    backdrop-filter: blur(10px);
}

.news-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-date {
    font-size: 13px;
    color: var(--color-gray-400);
    margin-bottom: 8px;
}

.news-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 10px;
    line-height: 1.4;
}

.news-featured .news-body h3 {
    font-size: 22px;
}

.news-body p {
    font-size: 14px;
    color: var(--color-gray-500);
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
}

.news-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
    align-self: flex-start;
}

.news-link:hover {
    color: var(--color-cyan);
    gap: 4px;
}

/* ===========================
   联系我们
   =========================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

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

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
}

.contact-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.7;
}

.contact-qr {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    margin-top: 8px;
}

.qr-image {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    background: #fff;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.qr-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.qr-text h4 {
    font-size: 15px;
    color: #fff;
    margin-bottom: 4px;
}

.qr-text p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 4px;
}

.qr-text small {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
}

.contact-form-wrap {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: 36px;
    backdrop-filter: blur(10px);
}

.contact-form h3 {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 24px;
}

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

.form-group label {
    display: block;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.08);
}

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background: var(--color-dark);
    color: #fff;
}

.form-note {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
    margin-top: 12px;
    text-align: center;
}

/* ===========================
   页脚
   =========================== */
.footer {
    background: var(--color-dark);
    padding: 64px 0 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo span {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.7;
    margin-bottom: 16px;
}

.footer-slogan {
    font-size: 13px;
    color: var(--color-cyan);
    font-weight: 500;
    letter-spacing: 1px;
}

.footer-links h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.footer-links ul {
    list-style: none;
}

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

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-links li {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.3);
    margin-bottom: 4px;
}

/* ===========================
   返回顶部
   =========================== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

/* ===========================
   动画
   =========================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===========================
   响应式
   =========================== */
@media (max-width: 1024px) {
    .about-content,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-visual {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .tracks-grid,
    .business-grid,
    .communities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .achievements-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .news-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .news-featured {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .news-featured .news-image {
        height: 200px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(10, 14, 39, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .section {
        padding: 64px 0;
    }
    
    .hero-content {
        padding: 100px 20px 60px;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-num {
        font-size: 32px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .tracks-grid,
    .business-grid,
    .communities-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-featured {
        grid-column: span 1;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-values {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .ecosystem-diagram {
        max-width: 500px;
    }
    
    .eco-node {
        width: 130px;
    }
    
    .eco-node-inner {
        padding: 12px;
    }
    
    .eco-node-inner h4 {
        font-size: 13px;
    }
    
    .eco-node-inner p {
        font-size: 11px;
    }
    
    .contact-form-wrap {
        padding: 24px;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 36px;
    }
    
    .hero-stats {
        gap: 16px;
    }
    
    .stat-num {
        font-size: 28px;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .eco-core {
        width: 90px;
        height: 90px;
    }
}

/* ===========================
   权威背书
   =========================== */
.credentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.credential-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.credential-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.cred-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(6, 182, 212, 0.08));
    border-radius: 50%;
}

.credential-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 12px;
}

.credential-card p {
    font-size: 14px;
    color: var(--color-gray-500);
    line-height: 1.7;
}

/* ===========================
   企业文化
   =========================== */
.culture-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-top: 56px;
}

.culture-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.culture-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

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

.culture-card:hover::before {
    opacity: 1;
}

.culture-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.06), rgba(6, 182, 212, 0.06));
    border-radius: var(--radius-md);
}

.culture-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 14px;
}

.culture-card p {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.8;
}

/* ===========================
   合作愿景 Banner
   =========================== */
.vision-banner {
    margin-top: 64px;
    padding: 48px 40px;
    background: linear-gradient(135deg, #0a0e27 0%, #111634 50%, #1a2148 100%);
    border-radius: var(--radius-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.vision-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(59, 130, 246, 0.12), transparent 40%),
                radial-gradient(circle at 70% 50%, rgba(6, 182, 212, 0.1), transparent 40%);
}

.vision-content {
    position: relative;
    z-index: 1;
}

.vision-content h3 {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.vision-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 1px;
}

@media (max-width: 768px) {
    .credentials-grid {
        grid-template-columns: 1fr;
    }
    
    .culture-section {
        grid-template-columns: 1fr;
    }
    
    .vision-banner {
        padding: 32px 20px;
    }
    
    .vision-content h3 {
        font-size: 22px;
    }
    
    .vision-content p {
        font-size: 15px;
    }
}

/* ===========================
   OPC数字服务平台
   =========================== */

/* 平台概览统计 */
.platform-overview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.platform-stat {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--color-light);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.platform-stat-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
}

.platform-stat-num {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.2;
}

.platform-stat-label {
    font-size: 13px;
    color: var(--color-gray-500);
}

/* Tab 导航 */
.platform-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    border-bottom: 2px solid var(--color-gray-200);
    overflow-x: auto;
    padding-bottom: 0;
}

.platform-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-gray-500);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.platform-tab:hover {
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.05);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.platform-tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    font-weight: 600;
}

.platform-tab svg {
    flex-shrink: 0;
}

/* Tab 面板 */
.platform-panel {
    display: none;
    animation: platformFadeIn 0.4s ease;
}

.platform-panel.active {
    display: block;
}

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

/* 通用表单样式 */
.platform-form {
    background: var(--color-light);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
}

.platform-form h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 24px;
}

.platform-form .form-group {
    margin-bottom: 18px;
}

.platform-form label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: 6px;
}

.platform-form .req {
    color: var(--color-red);
}

.platform-form input[type="text"],
.platform-form input[type="tel"],
.platform-form input[type="email"],
.platform-form input[type="date"],
.platform-form input[type="number"],
.platform-form select,
.platform-form textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 14px;
    color: var(--color-gray-800);
    background: var(--color-light);
    transition: var(--transition);
}

.platform-form input:focus,
.platform-form select:focus,
.platform-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.platform-form textarea {
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-check {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 20px;
    font-size: 13px;
    color: var(--color-gray-600);
}

.form-check input {
    margin-top: 2px;
    accent-color: var(--color-primary);
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: var(--transition);
}

.checkbox-item:hover {
    border-color: var(--color-primary);
    background: rgba(59, 130, 246, 0.04);
}

.checkbox-item input {
    accent-color: var(--color-primary);
}

/* 按钮 */
.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* 注册面板 */
.register-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.register-benefits h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 20px;
}

.benefit-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.benefit-item {
    display: flex;
    gap: 14px;
    padding: 16px;
    background: var(--color-light);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.benefit-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.benefit-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.benefit-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 4px;
}

.benefit-item p {
    font-size: 13px;
    color: var(--color-gray-500);
    line-height: 1.5;
}

/* 入驻申请面板 */
.settle-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 32px;
}

.settle-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.settle-step {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.step-num {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    position: relative;
}

.settle-step:not(:last-child) .step-num::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 20px;
    background: linear-gradient(var(--color-primary), transparent);
}

.step-content h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 4px;
}

.step-content p {
    font-size: 13px;
    color: var(--color-gray-500);
    line-height: 1.5;
}

/* 空间预约面板 */
.space-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.space-card {
    background: var(--color-light);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.space-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.space-img {
    height: 120px;
    position: relative;
    display: flex;
    align-items: flex-end;
    padding: 12px;
}

.space-img-1 { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.space-img-2 { background: linear-gradient(135deg, #06b6d4, #10b981); }
.space-img-3 { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.space-img-4 { background: linear-gradient(135deg, #8b5cf6, #6366f1); }

.space-badge {
    background: rgba(255, 255, 255, 0.95);
    color: var(--color-gray-800);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
}

.space-body {
    padding: 16px;
}

.space-body h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 4px;
}

.space-location {
    font-size: 13px;
    color: var(--color-gray-500);
    margin-bottom: 10px;
}

.space-meta {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.space-tag {
    padding: 3px 8px;
    background: var(--color-gray-100);
    border-radius: 4px;
    font-size: 12px;
    color: var(--color-gray-600);
}

.space-price {
    margin-bottom: 14px;
}

.price-num {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
}

.price-unit {
    font-size: 12px;
    color: var(--color-gray-400);
}

.space-booking-form {
    max-width: 640px;
    margin: 0 auto;
}

/* 算力超市面板 */
.compute-intro {
    text-align: center;
    margin-bottom: 28px;
}

.compute-intro p {
    font-size: 15px;
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

.compute-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.compute-card {
    background: var(--color-light);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.compute-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.compute-card-popular {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.compute-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    color: #fff;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    z-index: 1;
}

.compute-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--color-gray-200);
}

.compute-tier {
    display: inline-block;
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.compute-gpu {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-gray-900);
}

.compute-body {
    padding: 24px 20px;
}

.compute-price {
    text-align: center;
    margin-bottom: 20px;
}

.price-symbol {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    vertical-align: top;
}

.price-amount {
    font-size: 36px;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.price-period {
    font-size: 13px;
    color: var(--color-gray-400);
}

.compute-specs {
    margin-bottom: 20px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-gray-100);
    font-size: 13px;
}

.spec-row span:first-child {
    color: var(--color-gray-500);
}

.spec-row span:last-child {
    color: var(--color-gray-800);
    font-weight: 500;
}

/* 算力计算器 */
.compute-calculator {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.compute-calculator h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 20px;
}

.calc-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    align-items: center;
}

.calc-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.calc-field label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-600);
    margin-bottom: 6px;
}

.calc-field select,
.calc-field input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 14px;
    color: var(--color-gray-800);
    background: var(--color-light);
}

.calc-field select:focus,
.calc-field input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.calc-result {
    text-align: center;
    padding: 24px;
    background: var(--color-light);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
}

.calc-label {
    font-size: 13px;
    color: var(--color-gray-500);
    margin-bottom: 8px;
}

.calc-amount {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.calc-detail {
    font-size: 12px;
    color: var(--color-gray-500);
    margin-bottom: 16px;
}

/* 订单大厅面板 */
.orders-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.orders-intro p {
    font-size: 14px;
    color: var(--color-gray-500);
}

.orders-filter {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 6px 14px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    background: var(--color-light);
    font-family: inherit;
    font-size: 13px;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.orders-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.order-card {
    background: var(--color-light);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: var(--transition);
}

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

.order-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.order-cat {
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
}

.cat-aigc { background: rgba(59, 130, 246, 0.1); color: var(--color-primary); }
.cat-manufacturing { background: rgba(16, 185, 129, 0.1); color: var(--color-green); }
.cat-cross-border { background: rgba(245, 158, 11, 0.1); color: var(--color-gold); }
.cat-digital { background: rgba(139, 92, 246, 0.1); color: var(--color-purple); }

.order-status {
    font-size: 12px;
    font-weight: 600;
}

.status-open { color: var(--color-green); }
.status-urgent { color: var(--color-red); }

.order-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 8px;
}

.order-card > p {
    font-size: 13px;
    color: var(--color-gray-500);
    line-height: 1.6;
    margin-bottom: 14px;
}

.order-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 14px;
    padding: 12px;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
}

.order-meta-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.meta-label {
    font-size: 11px;
    color: var(--color-gray-400);
}

.meta-value {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-gray-800);
}

/* ===========================
   平台板块响应式
   =========================== */
@media (max-width: 1024px) {
    .platform-overview {
        grid-template-columns: repeat(2, 1fr);
    }
    .space-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .compute-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin-left: auto;
        margin-right: auto;
    }
    .orders-list {
        grid-template-columns: 1fr;
    }
    .register-layout,
    .settle-layout {
        grid-template-columns: 1fr;
    }
    .calc-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .platform-overview {
        grid-template-columns: 1fr;
    }
    .space-grid {
        grid-template-columns: 1fr;
    }
    .platform-tabs {
        gap: 4px;
    }
    .platform-tab {
        padding: 10px 12px;
        font-size: 13px;
    }
    .platform-form {
        padding: 20px;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .orders-header {
        flex-direction: column;
        align-items: flex-start;
    }
}