:root {
    --primary: #0052FF;
    --primary-dark: #0038B0;
    --black: #0B0E14;
    --gray-1: #1E2329;
    --gray-2: #2C3038;
    --gray-3: #6C757D;
    --gray-light: #F8F9FC;
    --white: #FFFFFF;
    --border-radius: 24px;
    --box-shadow: 0 20px 40px -12px rgba(0,0,0,0.06);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    background-color: var(--white);
    color: var(--black);
    line-height: 1.6;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
}

*, *::before, *::after {
    box-sizing: border-box;
}

.w1240 {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

.topblackline {
    background: var(--white);
    border-bottom: 1px solid rgba(0,0,0,0.04);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255,255,255,0.94);
}
.topblackline .w1240 {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.siteviewlogo.on a {
    font-size: 28px;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--primary) 0%, #3A7BFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.mobilehomecaidannav, .homecaidan { display: none; }

.pagemaincontent.on {
    background: linear-gradient(145deg, #FFFFFF 0%, #F5F9FF 100%);
}
.xxt.left {
    padding: 80px 0;
    background-image: url(/static/images/homebanenr.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.xxtcon {
    max-width: 620px;
    padding: 32px 0;
}
.fstyle1 h1 {
    font-size: 64px;
    font-weight: 700;
    margin: 0 0 16px;
    line-height: 1.1;
    letter-spacing: -0.02em;
    background: linear-gradient(145deg, #0B0E14 0%, #1E2329 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.fstyle2 {
    font-size: 18px;
    color: var(--gray-3);
    margin-bottom: 40px;
    font-weight: 400;
    max-width: 560px;
}
.clickbutton {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}
.clickbutton div { display: inline-block; }
.clickbutton a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 60px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.2s ease;
    background: white;
    border: 1.5px solid var(--primary);
    color: var(--primary);
    box-shadow: 0 2px 8px rgba(0,82,255,0.06);
}
#clickbuttonaa a {
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px 36px;
    box-shadow: 0 12px 24px -8px rgba(0,82,255,0.24);
}
.clickbutton a:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 28px -10px rgba(0,82,255,0.3);
    background: var(--primary-dark);
    color: white;
    border-color: var(--primary-dark);
}
#clickbuttonab a, #clickbuttonac a, #clickbuttonad a {
    background: white;
    border: 1.5px solid rgba(0,82,255,0.2);
    color: var(--gray-2);
}
#clickbuttonab a:hover, #clickbuttonac a:hover, #clickbuttonad a:hover {
    border-color: var(--primary);
    background: white;
    color: var(--primary);
}

.pagemaincontent-onselling {
    padding: 100px 0 60px;
    background: white;
}
.caption h4 {
    font-size: 40px;
    font-weight: 600;
    margin: 0 0 20px;
    letter-spacing: -0.02em;
    color: var(--black);
}
.caption p {
    color: var(--gray-3);
    font-size: 17px;
    line-height: 1.7;
    max-width: 860px;
    margin-bottom: 32px;
}
.caption p:last-of-type {
    color: var(--gray-2);
    font-weight: 500;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(0,0,0,0.06);
}
.pagemaincontent-onsellingcon {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 64px;
}
.pagemaincontent-onsellingcon .box {
    background: white;
    border-radius: 32px;
    padding: 32px 24px;
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(0,0,0,0.02);
    transition: all 0.25s ease;
    text-align: center;
}
.pagemaincontent-onsellingcon .box:hover {
    transform: translateY(-8px);
    box-shadow: 0 32px 56px -16px rgba(0,0,0,0.12);
    border-color: rgba(0,82,255,0.1);
}
.pagemaincontent-onsellingimg span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(145deg, #F0F5FF, #E8F0FE);
    border-radius: 24px;
    margin: 0 auto 24px;
}
.pagemaincontent-onsellingimg img {
    width: 44px;
    height: 44px;
    object-fit: contain;
}
.box h4 {
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 12px;
    color: var(--gray-1);
}
.box p {
    font-size: 15px;
    color: var(--gray-3);
    margin: 0;
    line-height: 1.6;
}

.youshi {
    background: var(--gray-light);
    padding: 100px 0;
}
.youshi .w1240 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.youshiimg img {
    width: 100%;
    border-radius: 32px;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s;
}
.youshicon h4 {
    font-size: 36px;
    font-weight: 600;
    margin: 0 0 16px;
    line-height: 1.2;
    color: var(--black);
}
.youshicon p {
    font-size: 18px;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 40px;
    border-bottom: 1px solid rgba(0,82,255,0.16);
    padding-bottom: 20px;
}
.youshicon dl {
    display: flex;
    margin: 0 0 24px;
    align-items: flex-start;
}
.youshicon dt {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 16px;
    color: var(--gray-1);
    font-weight: 500;
}
.youshicon dt span {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: white;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 16px -6px rgba(0,0,0,0.04);
}
.youshicon dt span img {
    width: 24px;
    height: 24px;
}

.responcase {
    padding: 80px 0;
    background: linear-gradient(145deg, #F5F8FF, #FFFFFF);
}
.responcasecon {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.responcasecon .box {
    flex: 1;
    min-width: 180px;
    background: white;
    border-radius: 28px;
    padding: 32px 16px;
    text-align: center;
    box-shadow: 0 8px 20px -8px rgba(0,0,0,0.04);
    border: 1px solid white;
    transition: all 0.2s;
}
.responcasecon .box:hover {
    border-color: var(--primary);
    background: white;
}
.caseimg span {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
}
.caseimg img {
    width: 48px;
    height: 48px;
}
.responcasecon .box p {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-1);
    margin: 0;
}

footer {
    background: var(--black);
    padding: 80px 0;
    color: white;
}
.joinandlianxicon {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}
.joinandlianxiintro:before {
    content: "欧易OKX · 全球数字资产基石";
    font-size: 32px;
    font-weight: 600;
    display: block;
    margin-bottom: 24px;
    color: white;
    letter-spacing: -0.01em;
}
.joinandlianxiintro:after {
    content: "安全 · 可靠 · 合规 · 创新 —— 欧易下载 开启加密未来";
    font-size: 18px;
    color: rgba(255,255,255,0.7);
    display: block;
    letter-spacing: 1px;
}
.seo-keywords {
    color: rgba(255,255,255,0.5);
    margin-top: 48px;
    font-size: 14px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* 响应式 */
@media (max-width: 992px) {
    .pagemaincontent-onsellingcon { grid-template-columns: repeat(2,1fr); }
    .youshi .w1240 { grid-template-columns: 1fr; }
    .xxtcon { max-width: 100%; }
    .fstyle1 h1 { font-size: 52px; }
}
@media (max-width: 768px) {
    .pagemaincontent-onsellingcon { grid-template-columns: 1fr; }
    .clickbutton { flex-direction: column; align-items: stretch; }
    .clickbutton a { width: 100%; }
    .fstyle1 h1 { font-size: 42px; }
}