/* ========================================
   金石说 - 企业官网样式表
   主题色：橙色/金黄色渐变 #F5A623 → #F05A28
   ======================================== */

/* 基础重置与变量 */
:root {
    --primary: #F5A623;
    --primary-dark: #F05A28;
    --primary-gradient: linear-gradient(135deg, #F5A623 0%, #F05A28 100%);
    --primary-light: #FFF5E6;
    --dark: #1a1a2e;
    --dark-light: #16213e;
    --gray-dark: #4a4a4a;
    --gray: #888;
    --gray-light: #f5f5f5;
    --white: #ffffff;
    --shadow: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-hover: 0 20px 60px rgba(240,90,40,0.2);
    --transition: all 0.3s ease;
    --border-radius: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--gray-dark);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 4px 30px rgba(0,0,0,0.1);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo img {
    height: 45px;
    width: auto;
}

.logo-slogan {
    font-size: 10pt;
    font-weight: 400;
    color: #c0a16e;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 60px;
}

.nav-link {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    font-size: 16px;
    position: relative;
    padding: 8px 0;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: 3px;
    transition: var(--transition);
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(240,90,40,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(240,90,40,0.4);
}

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

.btn-outline:hover {
    background: var(--dark);
    color: var(--white);
}

.btn-full {
    width: 100%;
}

/* ========================================
   首页 Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
    background: linear-gradient(135deg, #fff 0%, #fff9f5 50%, #fff 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -200px;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--primary-dark);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    top: 50%;
    right: 20%;
    animation: float 12s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    display: inline-block;
    padding: 8px 20px;
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 14px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.hero-title {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.2;
    color: var(--dark);
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 16px;
    color: #666;
    margin-bottom: 32px;
    max-width: 500px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 36px;
    font-weight: 900;
    color: var(--dark);
    line-height: 1;
}

.stat-plus {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-dark);
}

.stat-label {
    font-size: 14px;
    color: var(--gray);
    margin-top: 4px;
}

/* Hero 右侧视觉 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 500px;
    height: 500px;
}

.main-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
}

.visual-circle {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-right-color: var(--primary-dark);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.visual-circle::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid transparent;
    border-bottom-color: var(--primary);
    border-left-color: var(--primary-dark);
    border-radius: 50%;
    animation: rotate 15s linear infinite reverse;
}

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

.main-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 100px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 16px 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: var(--dark);
    animation: float-card 4s ease-in-out infinite;
}

.floating-card i {
    font-size: 24px;
    color: var(--primary-dark);
}

.card-1 {
    top: 10%;
    left: 0;
    animation-delay: 0s;
}

.card-2 {
    top: 30%;
    right: 0;
    animation-delay: 1s;
}

.card-3 {
    bottom: 20%;
    left: 10%;
    animation-delay: 2s;
}

@keyframes float-card {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--gray);
    font-size: 12px;
    animation: bounce 2s infinite;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--gray);
    border-radius: 13px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 20px; }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* ========================================
   通用 Section 样式
   ======================================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

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

.section-header.light .section-title {
    color: var(--white);
}

.section-header.light .section-desc {
    color: rgba(255,255,255,0.8);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-header.light .section-tag {
    background: rgba(255,255,255,0.2);
    color: var(--white);
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   公司介绍
   ======================================== */
.about {
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 80px;
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
}

/* 公司介绍展示区域 - 大气磅礴 */
.about-showcase {
    width: 100%;
    height: 500px;
    background: linear-gradient(145deg, #1a1a2e 0%, #16213e 50%, #1a1a2e 100%);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 25px 80px rgba(0,0,0,0.4),
        inset 0 1px 0 rgba(255,255,255,0.1);
}

/* 背景光效 */
.showcase-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
}

.glow-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
    animation: pulse-glow 4s ease-in-out infinite;
}

.glow-2 {
    width: 300px;
    height: 300px;
    background: var(--primary-dark);
    bottom: -50px;
    left: -50px;
    animation: pulse-glow 4s ease-in-out infinite 2s;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

/* 网格背景 */
.bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(245,166,35,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245,166,35,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* 展示内容 */
.showcase-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 主展示区 */
.main-display {
    position: relative;
    width: 320px;
    height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 环形装饰 */
.display-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid transparent;
}

.ring-outer {
    width: 320px;
    height: 320px;
    border-top-color: rgba(245,166,35,0.3);
    border-right-color: rgba(240,90,40,0.3);
    animation: rotate 20s linear infinite;
}

.ring-middle {
    width: 260px;
    height: 260px;
    border-bottom-color: rgba(245,166,35,0.5);
    border-left-color: rgba(240,90,40,0.5);
    animation: rotate 15s linear infinite reverse;
}

.ring-inner {
    width: 200px;
    height: 200px;
    border: 2px dashed rgba(245,166,35,0.4);
    animation: rotate 10s linear infinite;
}

/* 核心宝石 */
.display-core {
    width: 140px;
    height: 140px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 0 60px rgba(245,166,35,0.5),
        0 0 100px rgba(240,90,40,0.3),
        inset 0 0 30px rgba(255,255,255,0.2);
    z-index: 10;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
}

.display-core:hover {
    transform: scale(1.05);
    box-shadow: 
        0 0 80px rgba(245,166,35,0.7),
        0 0 140px rgba(240,90,40,0.5),
        inset 0 0 40px rgba(255,255,255,0.3);
}

.display-core i {
    font-size: 56px;
    color: var(--white);
    filter: drop-shadow(0 2px 10px rgba(0,0,0,0.2));
}

/* 粒子效果 */
.core-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.core-particles span {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0;
    animation: particle-float 3s ease-in-out infinite;
}

.core-particles span:nth-child(1) { top: 20%; left: 20%; animation-delay: 0s; }
.core-particles span:nth-child(2) { top: 30%; right: 15%; animation-delay: 0.5s; }
.core-particles span:nth-child(3) { bottom: 25%; left: 25%; animation-delay: 1s; }
.core-particles span:nth-child(4) { bottom: 30%; right: 20%; animation-delay: 1.5s; }
.core-particles span:nth-child(5) { top: 50%; left: 10%; animation-delay: 2s; }
.core-particles span:nth-child(6) { top: 50%; right: 10%; animation-delay: 2.5s; }

@keyframes particle-float {
    0%, 100% { 
        opacity: 0; 
        transform: translateY(0) scale(0); 
    }
    50% { 
        opacity: 1; 
        transform: translateY(-30px) scale(1); 
    }
}

/* 轨道数据卡片 */
.orbit-data {
    position: absolute;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(245,166,35,0.3);
    border-radius: 16px;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
    cursor: pointer;
    z-index: 20;
}

.orbit-data:hover {
    background: rgba(255,255,255,0.15);
    border-color: var(--primary);
    transform: scale(1.05);
    box-shadow: 0 10px 40px rgba(245,166,35,0.2);
}

.data-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.data-icon i {
    font-size: 22px;
    color: var(--white);
}

.data-info {
    display: flex;
    flex-direction: column;
}

.data-value {
    font-size: 24px;
    font-weight: 900;
    color: var(--white);
    line-height: 1;
}

.data-label {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    margin-top: 4px;
}

/* 数据卡片位置 */
.data-1 { top: 40px; left: 40px; animation: data-float 5s ease-in-out infinite; }
.data-2 { top: 40px; right: 40px; animation: data-float 5s ease-in-out infinite 1.25s; }
.data-3 { bottom: 40px; left: 40px; animation: data-float 5s ease-in-out infinite 2.5s; }
.data-4 { bottom: 40px; right: 40px; animation: data-float 5s ease-in-out infinite 3.75s; }

@keyframes data-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--primary-gradient);
    color: var(--white);
    padding: 24px 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
}

.exp-number {
    font-size: 48px;
    font-weight: 900;
    line-height: 1;
}

.exp-text {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
}

.about-text h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
}

.about-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.feature-item {
    text-align: center;
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    transition: var(--transition);
}

.feature-icon i {
    font-size: 28px;
    color: var(--primary-dark);
}

.feature-item:hover .feature-icon {
    background: var(--primary-gradient);
    transform: translateY(-5px);
}

.feature-item:hover .feature-icon i {
    color: var(--white);
}

.feature-text h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.feature-text p {
    font-size: 14px;
    color: var(--gray);
    margin: 0;
}

/* 价值观 */
.values-section {
    background: var(--gray-light);
    padding: 60px;
    border-radius: var(--border-radius);
}

.values-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 40px;
}

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

.value-card {
    background: var(--white);
    padding: 32px 24px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: all 0.15s ease-out;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    will-change: transform, box-shadow;
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    transition: all 0.2s ease-out;
}

.value-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.value-icon i {
    font-size: 28px;
    color: var(--white);
}

.value-card h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.value-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

/* ========================================
   业务介绍
   ======================================== */
.services {
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.services-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
}

.bg-pattern {
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, var(--primary) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, var(--primary-dark) 0%, transparent 50%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 80px;
}

.services-grid.three-columns {
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid.two-columns {
    grid-template-columns: repeat(2, 1fr);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.service-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--border-radius);
    padding: 40px 32px;
    position: relative;
    transition: all 0.15s ease-out;
    backdrop-filter: blur(10px);
    will-change: transform, background, border-color;
}

.service-card:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--primary);
    transform: translateY(-8px);
    transition: all 0.2s ease-out;
}

.service-card.featured {
    background: var(--primary-gradient);
    border-color: transparent;
}

.service-card.featured:hover {
    transform: translateY(-8px) scale(1.02);
}

.featured-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--dark);
    color: var(--white);
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 700;
    border-radius: 50px;
}

.service-icon {
    width: 70px;
    height: 70px;
    background: rgba(245,166,35,0.2);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-card.featured .service-icon {
    background: rgba(255,255,255,0.2);
}

.service-icon i {
    font-size: 32px;
    color: var(--primary);
}

.service-card.featured .service-icon i {
    color: var(--white);
}

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.service-card p {
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 24px;
    line-height: 1.7;
}

.service-list {
    list-style: none;
    margin-bottom: 24px;
}

.service-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 10px;
}

.service-list i {
    color: var(--primary);
    font-size: 12px;
}

.service-card.featured .service-list i {
    color: var(--white);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
}

.service-card.featured .service-link {
    color: var(--white);
}

.service-link:hover {
    gap: 12px;
}

/* 服务流程 */
.process-section {
    background: rgba(255,255,255,0.05);
    border-radius: var(--border-radius);
    padding: 60px;
    border: 1px solid rgba(255,255,255,0.1);
}

.ad-formats-section {
    margin-bottom: 80px;
}

.ad-formats-desc {
    text-align: center;
    color: rgba(255,255,255,0.7);
    font-size: 16px;
    margin-bottom: 40px;
}

.ad-formats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.ad-format-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all 0.15s ease-out;
    will-change: transform, background, border-color;
}

.ad-format-card:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--primary);
    transform: translateY(-6px);
    transition: all 0.2s ease-out;
}

.ad-format-image {
    background: linear-gradient(135deg, rgba(245,166,35,0.1) 0%, rgba(240,90,40,0.1) 100%);
    padding: 0px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 180px;
}

.ad-format-body {
    padding: 24px;
}

.ad-format-body h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.ad-format-scene {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 12px;
    font-weight: 500;
}

.ad-format-desc {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
    margin-bottom: 16px;
}

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

.ad-format-tags .tag {
    background: rgba(245,166,35,0.15);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 500;
}

/* 广告样式Mockup */
.mockup {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.phone-frame {
    width: 100px;
    height: 180px;
    background: var(--dark);
    border-radius: 16px;
    border: 3px solid rgba(255,255,255,0.2);
    overflow: hidden;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

/* 开屏广告Mockup */
.splash-content {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.splash-brand {
    font-size: 10px;
    color: var(--white);
    font-weight: 600;
}

.splash-timer {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0,0,0,0.5);
    color: var(--white);
    font-size: 8px;
    padding: 2px 6px;
    border-radius: 10px;
}

/* 信息流广告Mockup */
.feed-list {
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.feed-item {
    height: 28px;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
}

.feed-item.ad-item {
    background: linear-gradient(135deg, rgba(245,166,35,0.3) 0%, rgba(240,90,40,0.3) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-label {
    font-size: 8px;
    color: var(--primary);
    font-weight: 600;
}

/* 激励视频Mockup */
.reward-content {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 8px;
}

.reward-icon {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 8px;
}

.reward-text {
    font-size: 7px;
    color: rgba(255,255,255,0.8);
    text-align: center;
    margin-bottom: 8px;
}

.reward-btn {
    background: var(--primary-gradient);
    color: var(--white);
    font-size: 8px;
    padding: 4px 10px;
    border-radius: 10px;
    font-weight: 600;
}

/* 横幅广告Mockup */
.banner-content {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-content {
    flex: 1;
    background: rgba(255,255,255,0.05);
}

.banner-ad {
    height: 32px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8px;
    color: var(--white);
    font-weight: 600;
}

/* 插屏广告Mockup */
.interstitial-overlay {
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
}

.interstitial-content {
    width: 100%;
    background: var(--dark);
    border-radius: 8px;
    padding: 12px 8px;
    position: relative;
}

.close-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    color: rgba(255,255,255,0.6);
    font-size: 12px;
    cursor: pointer;
}

.ad-visual {
    height: 60px;
    background: linear-gradient(135deg, rgba(245,166,35,0.4) 0%, rgba(240,90,40,0.4) 100%);
    border-radius: 4px;
    margin-bottom: 8px;
}

.ad-title {
    font-size: 9px;
    color: var(--white);
    text-align: center;
}

/* 搜索广告Mockup */
.search-content {
    padding: 8px;
}

.search-bar {
    height: 20px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    padding: 0 8px;
    margin-bottom: 12px;
    gap: 4px;
}

.search-bar i {
    font-size: 8px;
    color: rgba(255,255,255,0.5);
}

.search-bar span {
    font-size: 8px;
    color: rgba(255,255,255,0.5);
}

.search-result {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.result-item {
    height: 24px;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
}

.result-item.ad-result {
    background: rgba(245,166,35,0.15);
    display: flex;
    align-items: center;
    padding-left: 6px;
}

.ad-badge {
    font-size: 7px;
    color: var(--primary);
    background: rgba(245,166,35,0.3);
    padding: 1px 4px;
    border-radius: 2px;
}

.process-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 48px;
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    flex: 1;
    min-width: 200px;
    max-width: 220px;
}

.step-number {
    font-size: 48px;
    font-weight: 900;
    color: rgba(245,166,35,0.3);
    line-height: 1;
}

.step-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.step-content p {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
}

.step-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.step-icon i {
    font-size: 20px;
    color: var(--white);
}

.process-arrow {
    color: var(--primary);
    font-size: 20px;
    opacity: 0.5;
}

/* ========================================
   合作伙伴
   ======================================== */
.partners {
    background: linear-gradient(135deg, #fff 0%, #fff9f5 50%, #fff 100%);
    position: relative;
    overflow: hidden;
}

.partners-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.partners-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.35;
}

.partners-shape-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -150px;
    left: -150px;
}

.partners-shape-2 {
    width: 400px;
    height: 400px;
    background: var(--primary-dark);
    bottom: -100px;
    right: -100px;
}

.partners-shape-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
}

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

.partner-logo {
    background: var(--white);
    height: 120px;
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: var(--transition);
    cursor: pointer;
}

.partner-logo:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.partner-logo i {
    font-size: 36px;
    color: var(--primary);
}

.partner-logo span {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-dark);
}

/* ========================================
   联系我们
   ======================================== */
.contact {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #f8f9fa 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 20% 20%, rgba(245,166,35,0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 80%, rgba(240,90,40,0.06) 0%, transparent 50%);
    pointer-events: none;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-card {
    background: var(--dark);
    color: var(--white);
    padding: 48px;
    border-radius: var(--border-radius);
    margin-bottom: 32px;
}

.contact-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 32px;
}

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

.info-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-icon i {
    font-size: 20px;
    color: var(--white);
}

.info-text {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 4px;
}

.info-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
}

.social-links h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

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

.social-icon {
    width: 48px;
    height: 48px;
    background: var(--gray-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-dark);
    text-decoration: none;
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--primary-gradient);
    color: var(--white);
    transform: translateY(-3px);
}

/* 联系表单 */
.contact-form-wrapper {
    background: var(--gray-light);
    padding: 48px;
    border-radius: var(--border-radius);
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid transparent;
    border-radius: 10px;
    background: var(--white);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

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

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--dark);
    color: var(--white);
}

.footer-top {
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 60px;
}

.footer-logo {
    height: 50px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 24px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 15px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 12px;
}

.footer-contact i {
    color: var(--primary);
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 15px rgba(240,90,40,0.4);
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(240,90,40,0.5);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text {
        order: 1;
    }

    .hero-visual {
        order: 0;
    }

    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-image-wrapper {
        height: 350px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .about-image {
        order: -1;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        transform: translateY(-150%);
        transition: var(--transition);
        opacity: 0;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-menu li {
        border-bottom: 1px solid var(--gray-light);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-link {
        display: block;
        padding: 16px 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .stat-item {
        align-items: center;
    }

    .section-title {
        font-size: 32px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .process-steps {
        flex-direction: column;
    }

    .process-arrow {
        transform: rotate(90deg);
    }

    .partners-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .experience-badge {
        right: 10px;
        padding: 16px 24px;
    }

    .exp-number {
        font-size: 36px;
    }

    .values-section {
        padding: 40px 24px;
    }

    .process-section {
        padding: 40px 24px;
    }

    .contact-card,
    .contact-form-wrapper {
        padding: 32px 24px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .floating-card {
        display: none;
    }

    .about-visual {
        height: 350px;
    }

    .visual-center {
        width: 200px;
        height: 200px;
    }

    .center-circle {
        width: 80px;
        height: 80px;
    }

    .about-showcase {
        height: 400px;
        border-radius: 16px;
    }

    .main-display {
        width: 200px;
        height: 200px;
    }

    .ring-outer { width: 200px; height: 200px; }
    .ring-middle { width: 160px; height: 160px; }
    .ring-inner { width: 120px; height: 120px; }

    .display-core {
        width: 80px;
        height: 80px;
    }

    .display-core i {
        font-size: 32px;
    }

    .orbit-data {
        padding: 10px 14px;
        gap: 10px;
    }

    .data-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
    }

    .data-icon i {
        font-size: 16px;
    }

    .data-value {
        font-size: 16px;
    }

    .data-label {
        font-size: 11px;
    }

    .data-1 { top: 20px; left: 20px; }
    .data-2 { top: 20px; right: 20px; }
    .data-3 { bottom: 20px; left: 20px; }
    .data-4 { bottom: 20px; right: 20px; }
}

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

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

/* 页面加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-text > * {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-text > *:nth-child(1) { animation-delay: 0.1s; }
.hero-text > *:nth-child(2) { animation-delay: 0.2s; }
.hero-text > *:nth-child(3) { animation-delay: 0.3s; }
.hero-text > *:nth-child(4) { animation-delay: 0.4s; }
.hero-text > *:nth-child(5) { animation-delay: 0.5s; }