@charset 'UTF-8';
body,
div,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
button,
textarea,
p,
blockquote,
th,
td {
    margin: 0;
    padding: 0
}

fieldset,
img {
    border: 0
}

:focus {
    outline: 0
}

address,
caption,
cite,
code,
dfn,
em,
th,
var,
optgroup {
    font-style: normal;
    font-weight: normal
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: 100%;
    font-weight: normal
}

abbr,
acronym {
    border: 0;
    font-variant: normal
}

input,
button,
textarea,
select,
optgroup,
option {
    font-family: inherit;
    font-size: inherit;
    font-style: inherit;
    font-weight: inherit
}

code,
kbd,
samp,
tt {
    font-size: 100%
}

input,
button,
textarea,
select {
    *font-size: 100%
}

body {
    line-height: 1.5
}

ol,
ul {
    list-style: none
}

table {
    border-collapse: collapse;
    border-spacing: 0
}

caption,
th {
    text-align: left
}

sup,
sub {
    font-size: 100%;
    vertical-align: baseline
}

:link,
 :visited,
ins {
    text-decoration: none
}

blockquote,
q {
    quotes: none
}

blockquote:before,
blockquote:after,
q:before,
q:after {
    content: '';
    content: none
}


/* typography.css */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: bold;
    color: #111;
}

img {
    margin: 0;
}

a:hover {
    text-decoration: none;
}

a {
    color: #666;
    text-decoration: none;
    outline: none;
}

::-moz-selection {
    /*???Firefox*/
    background: #f67524;
    color: #fff;
}

::selection {
    background: #f67524;
    color: #fff;
}


/*clear float*/

.clearfix:after {
    font-size: 0;
    line-height: 0;
    content: "\020";
    display: block;
    height: 0;
    clear: both;
}

.clearfix {
    zoom: 1;
}
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #7c3aed;
    --accent: #06b6d4;
    --accent-dark: #0891b2;
    --light: #f8fafc;
    --dark: #1e293b;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --card-shadow-hover: 0 20px 40px -10px rgba(0, 0, 0, 0.1), 0 10px 20px -5px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Inter', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: #fff;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1560px; /* 修改为1560px */
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
header {
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 18px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

header.scrolled {
    padding: 12px 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo-icon {
    margin-right: 8px;
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo span {
    color: var(--dark);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 32px;
    position: relative;
}

nav ul li a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s;
    position: relative;
    padding: 8px 0;
}

nav ul li a:hover {
    color: var(--primary);
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--primary);
    transition: width 0.3s;
    border-radius: 2px;
}

nav ul li a:hover::after {
    width: 100%;
}

.nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.nav-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}
.mobile-menu{display: none;}
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
    padding: 8px;
}

/* 英雄区域 - 修改为左右布局 */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 30%, #f0f9ff 100%);
    position: relative;
    overflow: hidden;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg width='200' height='200' viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M44.9,-76.2C58.1,-69.2,68.9,-57.7,75.4,-44.3C81.9,-30.8,84.1,-15.4,83.6,-0.2C83.1,15,79.9,30,71.7,41.7C63.5,53.4,50.4,61.8,36.8,68.5C23.2,75.1,9.3,80.1,-4.8,86.5C-18.9,92.9,-37.8,100.7,-51.4,95.3C-65,89.9,-73.3,71.3,-78.8,53.6C-84.4,35.9,-87.2,19,-87.8,1.8C-88.3,-15.5,-86.7,-30.9,-79.8,-43.5C-72.9,-56,-60.7,-65.7,-46.7,-72.4C-32.7,-79.1,-16.4,-82.8,-0.1,-82.7C16.2,-82.6,32.4,-78.7,44.9,-76.2Z' transform='translate(100 100)' fill='%232563eb' fill-opacity='0.05'/%3E%3C/svg%3E");
    background-size: 800px;
    background-position: center right;
    opacity: 0.8;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 700px;
    position: relative;
    z-index: 2;
}

.hero-platforms {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    justify-content: flex-end;
    align-items: center;
    position: relative;
    z-index: 2;
}

.platform-logo-item {
    width: 120px;
    height: 120px;
    background-color: white;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--card-shadow);
    transition: all 0.3s;
    padding: 15px;
    text-align: center;
}

.platform-logo-item:nth-child(1) { transform: translateY(-30px) rotate(-5deg); }
.platform-logo-item:nth-child(2) { transform: translateY(10px) rotate(3deg); }
.platform-logo-item:nth-child(3) { transform: translateY(-20px) rotate(-2deg); }
.platform-logo-item:nth-child(4) { transform: translateY(20px) rotate(5deg); }
.platform-logo-item:nth-child(5) { transform: translateY(-15px) rotate(-3deg); }
.platform-logo-item:nth-child(6) { transform: translateY(15px) rotate(2deg); }

.platform-logo-item:hover {
    transform: translateY(-15px) rotate(0deg) !important;
    box-shadow: var(--card-shadow-hover);
}

.platform-logo-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.deepseek-icon { color: #10b981; }
.doubao-icon { color: #ec4899; }
.baidu-icon { color: #ef4444; }
.wenxin-icon { color: #f97316; }
.tongyi-icon { color: #8b5cf6; }
.yuanbao-icon { color: #06b6d4; }

.platform-logo-item span {
    font-weight: 700;
    font-size: 1rem;
    color: var(--dark);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--dark);
    background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 40px;
    max-width: 600px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 16px 36px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background-color: white;
    color: var(--primary);
    padding: 16px 36px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    border: 2px solid var(--primary);
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-3px);
}

/* 统计数据 */
.stats {
    padding: 80px 0;
    background-color: white;
    position: relative;
    z-index: 2;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
}

.stat-card {
    text-align: center;
    padding: 32px 24px;
    border-radius: 16px;
    background-color: var(--light);
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.stat-number {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
    line-height: 1;
}

.stat-text {
    color: var(--gray);
    font-size: 1.1rem;
    font-weight: 500;
}

/* GEO是什么部分 */
.geo-explanation {
    padding: 100px 0;
    background-color: var(--light);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--dark);
    line-height: 1.2;
}

.section-subtitle {
    color: var(--gray);
    font-size: 1.25rem;
    line-height: 1.7;
}

.explanation-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.explanation-text h3 {
    font-size: 1.8rem;
    margin-bottom: 24px;
    color: var(--dark);
}

.explanation-text p {
    color: var(--gray);
    margin-bottom: 24px;
    line-height: 1.7;
}

.explanation-visual {
    position: relative;
    height: 400px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: var(--card-shadow-hover);
}

.ai-chat-visual {
    width: 80%;
    height: 80%;
    background-color: white;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.ai-chat-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.ai-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-right: 12px;
    font-weight: bold;
}

.ai-chat-content {
    padding: 16px;
    background-color: #f8fafc;
    border-radius: 12px;
    font-size: 0.9rem;
    line-height: 1.6;
    position: relative;
}

.ai-chat-content::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 20px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid #f8fafc;
}

.highlight-text {
    color: var(--primary);
    font-weight: 600;
}

/* 价值主张 - 增加到6个卡片 */
.value-proposition {
    padding: 100px 0;
    background-color: white;
}

.value-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.value-card {
    background-color: white;
    border-radius: 20px;
    padding: 40px 32px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width:100%;
    height:6px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.value-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 28px;
    font-size: 2rem;
    color: white;
}

.value-card h3 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    color: var(--dark);
}

.value-card p {
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 24px;
}

.value-features {
    list-style: none;
    margin-top: 20px;
}

.value-features li {
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
}

.value-features li i {
    color: var(--success);
    margin-right: 10px;
    margin-top: 4px;
    flex-shrink: 0;
}

/* 解决方案 */
.solutions {
    padding: 100px 0;
    background-color: var(--light);
}

/* 平台选项卡样式 */
.platform-tabs-container {
    margin-top: 40px;
    background-color: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--card-shadow);
}

.platform-tabs-header {
    text-align: center;
    margin-bottom: 40px;
}

.platform-tabs-header h4 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 10px;
}

.platform-tabs-header p {
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto;
}

.platform-tabs-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    justify-content: center;
}

.platform-tab-btn {
    background-color: white;
    border: 2px solid var(--gray-light);
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    color: var(--dark);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

.platform-tab-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.1);
}

.platform-tab-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}

.platform-tab-content {
    display: none;
    animation: fadeIn 0.5s;
    background-color: var(--light);
    border-radius: 16px;
    padding: 30px;
}

.platform-tab-content.active {
    display: block;
}

.platform-tab-header {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--gray-light);
}

.platform-icon-circle {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    color: white;
    font-size: 1.8rem;
}

.platform-info h4 {
    font-size: 1.6rem;
    color: var(--dark);
    margin-bottom: 5px;
}

.platform-info p {
    color: var(--gray);
    font-size: 1rem;
}

.platform-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.platform-detail-card {
    background-color: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--card-shadow);
}

.platform-detail-card h5 {
    color: var(--primary);
    margin-bottom: 10px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.platform-detail-card p {
    color: var(--gray);
    line-height: 1.6;
}

.platform-actions-section {
    background-color: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--card-shadow);
}

.platform-actions-section h5 {
    color: var(--dark);
    margin-bottom: 15px;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.platform-actions-list {
    list-style: none;
    padding-left: 0;
}

.platform-actions-list li {
    margin-bottom: 10px;
    padding-left: 24px;
    position: relative;
    color: var(--gray);
}

.platform-actions-list li:before {
    content: "→";
    color: var(--primary);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 服务流程 */
.process {
    padding: 100px 0;
    background-color: white;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
    position: relative;
    flex-wrap: wrap;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 3px;
    background-color: rgba(37, 99, 235, 0.15);
    z-index: 1;
}

.step {
    text-align: center;
    position: relative;
    z-index: 2;
    flex: 1;
    min-width: 220px;
    margin-bottom: 40px;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 1.8rem;
    font-weight: 800;
    color: white;
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.2);
    border: 5px solid white;
}

.step h4 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--dark);
}

.step p {
    color: var(--gray);
    max-width: 250px;
    margin: 0 auto;
    line-height: 1.7;
}

/* 案例展示 - 修改为带图片的案例 */
.case-studies {
    padding: 100px 0;
    background-color: var(--light);
}

.case-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.case-card {
    background-color: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all 0.3s;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.case-card:hover .case-image img {
    transform: scale(1.05);
}

.case-content {
    padding: 25px;
}

.case-industry {
    display: inline-block;
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.case-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--dark);
    line-height: 1.3;
}

.case-desc {
    color: var(--gray);
    margin: 15px 0;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--gray-light);
}

.case-date {
    color: var(--gray);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.case-date i {
    margin-right: 5px;
    color: var(--primary);
}

.case-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    transition: all 0.3s;
}

.case-link:hover {
    color: var(--primary-dark);
}

.case-link i {
    margin-left: 5px;
    transition: transform 0.3s;
}

.case-link:hover i {
    transform: translateX(3px);
}

.case-more {
    text-align: center;
    margin-top: 60px;
}

/* 新闻板块 - 去掉图片 */
.news-section {
    padding: 100px 0;
    background-color: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 60px;
}

.news-card {
    background-color: var(--light);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
    box-shadow: var(--card-shadow);
    padding: 30px;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.news-content h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--dark);
    line-height: 1.4;
}

.news-content p {
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 20px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 25px;
}

.news-date {
    display: flex;
    align-items: center;
    color: var(--gray);
    font-size: 0.9rem;
}

.news-date i {
    margin-right: 8px;
    color: var(--primary);
}

.news-read-more {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
}

.news-read-more:hover {
    color: var(--primary-dark);
}

.news-read-more i {
    margin-left: 8px;
    transition: transform 0.3s;
}

.news-read-more:hover i {
    transform: translateX(5px);
}

.news-more {
    text-align: center;
    margin-top: 60px;
}

/* CTA区域 */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    transform: translate(-30%, 30%);
}

.cta-section .section-title {
    color: white;
    margin-bottom: 24px;
}

.cta-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 48px;
    font-size: 1.25rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.btn-light {
    background-color: white;
    color: var(--primary);
    padding: 18px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-light:hover {
    background-color: rgba(255, 255, 255, 0.95);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.btn-outline-light {
    background-color: transparent;
    color: white;
    padding: 18px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    border: 2px solid white;
    transition: all 0.3s;
}

.btn-outline-light:hover {
    background-color: white;
    color: var(--primary);
    transform: translateY(-3px);
}

/* 页脚 */
footer {
    background-color: #0f172a;
    color: #cbd5e1;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 60px;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: white;
    margin-bottom: 20px;
    display: block;
}

.footer-description {
    margin-bottom: 28px;
    line-height: 1.7;
    color: #94a3b8;
}

.social-icons {
    display: flex;
    gap: 16px;
}

.social-icon {
    width: 44px;
    height: 44px;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s;
}

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

.footer-column h3 {
    color: white;
    font-size: 1.3rem;
    margin-bottom: 24px;
}

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

.footer-links li {
    margin-bottom: 16px;
}

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.contact-info li {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
}

.contact-info li i {
    margin-right: 12px;
    color: var(--accent);
    margin-top: 4px;
    flex-shrink: 0;
}

.copyright {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid #334155;
    color: #94a3b8;
    font-size: 0.95rem;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-container {
        flex-direction: column;
    }
    
    .hero-platforms {
        justify-content: center;
        margin-top: 40px;
        display: none;
    }
}

@media (max-width: 992px) {
    .hero {
        padding: 140px 0 80px;
    }
    
    .explanation-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .process-steps {
        justify-content: center;
    }
    
    .step {
        flex: 0 0 calc(50% - 20px);
        margin-bottom: 40px;
    }
    
    nav ul {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    .nav-container .nav-cta{display: none;}
    
    /* 移动端导航优化 */
    .mobile-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: white;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        display: none;
        z-index: 999;
        border-top: 1px solid var(--gray-light);
        max-height: 80vh;
        overflow-y: auto;
        animation: slideDown 0.3s ease;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .mobile-menu.active {
        display: block;
    }
    
    .mobile-menu ul {
        display: flex;
        flex-direction: column;
    }
    
    .mobile-menu ul li {
        margin: 0 0 15px 0;
    }
    
    .mobile-menu ul li a {
        font-size: 1rem;
        padding: 10px 0;
        display: block;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        transition: all 0.3s ease;
    }
    
    .mobile-menu ul li a:hover {
        color: var(--primary);
        padding-left: 10px;
        border-left: 3px solid var(--primary);
    }
    
    .mobile-menu ul li:last-child a {
        border-bottom: none;
        margin-top: 10px;
        text-align: center;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
        color: white;
        border-radius: 50px;
        padding: 12px 20px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .platform-details-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-tab-header {
        flex-direction: column;
        text-align: center;
    }
    
    .platform-icon-circle {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    /* 移动端GEO核心价值每行两个 */
    .value-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .value-card {
        padding: 25px 20px;
    }
    
    .value-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .value-card h3 {
        font-size: 1.4rem;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .case-cards,
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .process-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .step {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-tabs-container {
        padding: 20px;
    }
    
    .platform-tab-content {
        padding: 20px;
    }
    
    /* 移动端统计数据每行两个模块 */
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-card {
        padding: 20px 15px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .stat-text {
        font-size: 1rem;
    }
    
    /* 移动端ai-chat-visual优化 */
    .ai-chat-visual {
        width: 90%;
        height: auto;
        min-height: 300px;
        padding: 15px;
        transform: scale(0.9);
    }
    
    .ai-chat-header {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 15px;
    }
    
    .ai-avatar {
        margin-bottom: 10px;
    }
    
    .ai-chat-content {
        padding: 12px;
        font-size: 0.85rem;
        max-height: 200px;
        overflow-y: auto;
    }
    
    .explanation-visual {
        height: 350px;
    }
    
    /* 移动端平台选项卡导航每行两个 */
    .platform-tabs-nav {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .platform-tab-btn {
        width: 100%;
        justify-content: center;
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .platform-tab-btn i {
        font-size: 0.9rem;
    }
    
    .case-image {
        height: 180px;
    }
    
    .case-content {
        padding: 20px;
    }
    
    .case-title {
        font-size: 1.3rem;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .btn-primary,
    .btn-secondary,
    .btn-light,
    .btn-outline-light {
        padding: 16px 28px;
        width: 100%;
        justify-content: center;
    }
    
    .hero-buttons {
        gap: 12px;
    }
    
    .platform-info h4 {
        font-size: 1.4rem;
    }
    
    .news-card {
        padding: 20px;
    }
    
    /* 移动端GEO核心价值每行一个 */
    .value-cards {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    /* 移动端平台选项卡导航每行一个 */
    .platform-tabs-nav {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .mobile-menu {
        padding: 15px;
    }
    
    .mobile-menu ul li a {
        font-size: 0.95rem;
    }
}