/* 首页专属样式，仅 index.html 加载；公共头尾样式在 site.css。 */
/* 页面底色与子页共用同一个变量，页脚区域才不会出现色差。 */
.home-page { background: var(--page-bg); }
/* 底部留白只由 .footer 的 margin(var(--footer-gap)) 提供，避免首页比子页多出 20px。 */
.main-wrap { position: relative; width: 100%; height: fit-content; overflow: visible; padding-bottom: 0; }
.banner-wrap { width:100%; position:relative; height: 982px; overflow: hidden; }
.banner-bg { position: absolute; top: 0; left: 0; width: 100%; height: fit-content; z-index: -1; }
.banner { position: relative; height: 100%; margin: 0 auto; width: min(1440px, 100%); }
.banner-content { position: absolute; width: 515px; z-index: 990; left: max(var(--site-gutter), calc((100% - 1200px) / 2)); top: var(--page-top); height: auto; }
.banner-content .banner-content-btn { display: inline-block; width: fit-content; height: fit-content; }
.banner-content .banner-btn { display: block; width: 268px; height: 108px; transform: translateX(-10px); margin-top: 25px; }
.banner-content .banner-history { display: block; width: 250px; height: 40px; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', Arial, sans-serif; font-weight: 500; font-size: 16px; line-height: 40px; letter-spacing: 0px; text-align: center; color: #355FAC; }
.banner-content .banner-history:hover { color: #5d7fbd; }
.banner-lottie { position: absolute; width: 750px; height: 493px; top: 130px; right: 90px; z-index: 9; }
#cert_blocks { scroll-margin-top: 140px; position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%); width: calc(100% - 48px); }
#cert_blocks h2 { margin-bottom: 12px; width: 100%; height: 48px; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', Arial, sans-serif; font-style: normal; font-weight: 600; font-size: 34px; line-height: 48px; text-align: center; color: #172b4a; }
#cert_blocks p { margin-bottom: 23px; width: 100%; height: 25px; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', Arial, sans-serif; font-style: normal; font-weight: 400; font-size: 18px; line-height: 25px; text-align: center; color: #647795; }
/* Keep mixed brand marks in a consistent optical frame and neutral palette. */
/* 合作伙伴横向无缝滚动：轨道内容复制两份，向左位移一份宽度后循环。 */
#cert_blocks .cert_scroller { max-width: 1200px; margin: 0 auto; overflow: hidden; isolation: isolate; -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
#cert_blocks .cert_track { display: flex; width: max-content; will-change: transform; animation: cert-marquee 45s linear infinite; }
#cert_blocks .cert_list { display: flex; gap: 12px; padding-right: 12px; text-align: center; }
#cert_blocks .cert_list .partner-card { flex: none; width: 140px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; min-width: 0; height: 116px; padding: 16px 10px; border: 1px solid #e5ebf4; border-radius: 16px; background: #ffffffa6; color: #596a83; transition: border-color .2s, background .2s, box-shadow .2s; }
@keyframes cert-marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { #cert_blocks .cert_track { animation: none; } }
#cert_blocks .partner-logo { display: flex; align-items: center; justify-content: center; width: 100%; height: 44px; }
/* 默认即彩色展示；悬停时图标轻微放大。 */
#cert_blocks .cert_list img { display: block; width: 40px; height: 40px; max-width: 100%; object-fit: contain; backface-visibility: hidden; transition: transform .25s ease; }
#cert_blocks .partner-name { font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; font-size: 13px; font-weight: 500; line-height: 20px; white-space: nowrap; }
/* ChatGPT 官方标识为单色 currentColor，这里用近黑还原其品牌观感。 */
#cert_blocks .partner-logo--chatgpt { color: #0d0d0d; }
/* 悬停暂停与放大只在真鼠标设备生效，避免触屏/页面滚动经过时 sticky hover 造成图标闪烁。 */
@media (hover: hover) and (pointer: fine) {
  #cert_blocks .cert_scroller:hover .cert_track { animation-play-state: paused; }
  #cert_blocks .cert_list .partner-card:hover { background: #fff; border-color: #bdcee8; box-shadow: 0 6px 18px #355fac0a; }
  #cert_blocks .cert_list .partner-card:hover img { transform: scale(1.18); }
}
.content-wrap { height: fit-content; margin: 0px auto 0; overflow: visible; padding-top: 160px; width: min(1200px, calc(100% - var(--site-gutter) * 2)); position: relative; z-index: 1; }
.content-text-wrap { width: 550px; height: 100%; }
.content-pic-wrap { position: relative; flex: 1; height: 100%; }
#main-lottie-1 { transform: scale(1.1) translateY(-25px); }
#main-lottie-2 { transform: scale(1.1) translate(-20px, -20px); }
#main-lottie-3 { transform: scale(1.13) translateY(-20px); }
#main-lottie-4 { transform: scale(1.1) translate(-20px, -25px); }
#main-lottie-1 .content-pic { position: absolute; top: 50px; right: 30px; width: 660px; height: 456px; }
#main-lottie-1 .content-pic-1 { position: absolute; width: 200px; height: 212px; top: -30px; right: -35px; }
#main-lottie-2 .content-pic { position: absolute; top: 60px; left: 50px; width: 620px; height: 429px; }
#main-lottie-2 .content-pic-1 { position: absolute; width: 140px; height: 147px; top: -10px; left: 0px; }
#main-lottie-3 .content-pic { position: absolute; top: 55px; right: 45px; width: 630px; height: 425.5px; }
#main-lottie-3 .content-pic-1 { position: absolute; width: 220px; height: 222px; top: -20px; right: -50px; }
#main-lottie-4 .content-pic { position: absolute; top: 60px; left: 55px; width: 590px; height: 430px; }
#main-lottie-4 .content-pic-1 { position: absolute; width: 130px; height: 159px; top: 30px; left: 14px; }
@keyframes bounceUp {
0% {
    opacity: 0;
    transform: translateY(160px);
  }
  70% {
    opacity: 1;
    transform: translateY(-6px);
  }
  100% {
    transform: translateY(0);
  }
}
.content-wrap .content-item-wrap { position: relative; display: flex; width: 100%; height: 100%; }
.content-wrap .content-item-wrap-active { animation: bounceUp 0.6s ease-in-out forwards; }
.computer { background: linear-gradient(79deg, rgba(230, 251, 255, 0.50) 17.4%, rgba(210, 222, 255, 0.50) 92.21%); margin-bottom: 160px; }
.computer .content-text-1 { margin-top: 61.5px; margin-left: 60px; width: 434px; height: 337px; }
.lite { background: linear-gradient(281deg, rgba(218, 238, 255, 0.50) 1.22%, rgba(228, 244, 254, 0.50) 46.73%, rgba(208, 223, 255, 0.50) 96.43%); border: 1px solid #FFFFFF47; }
.lite .content-text-2 { margin-top: 84px; margin-left: 45px; width: 434px; height: 337px; }
.ai { background: linear-gradient(256deg, rgba(133, 216, 255, 0.17) 6.22%, rgba(189, 255, 213, 0.17) 78.08%); border: 1px solid #FFFFFF47; margin-bottom: 160px; }
.ai .content-text-3 { margin-top: 110px; margin-left: 60px; width: 400px; height: 337px; }
.private { background: linear-gradient(99deg, rgba(210, 242, 255, 0.30) 0%, rgba(241, 234, 255, 0.50) 107.23%); border: 1px solid #FFFFFF47;  margin-bottom: 160px; }
.private .content-text-4 { margin-top: 100px; margin-left: 50px; width: 434px; height: 377px; }
.content-wrap .content-text-title { width: 100%; height: 59px; line-height: 59px; margin-bottom: 20px; font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', Arial, sans-serif; font-weight: 500; font-size: 40px; letter-spacing: 0px; color: #172b4a; }
.content-wrap .content-text-desc-strong { font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', Arial, sans-serif; font-weight: 500; font-size: 18px; line-height: 36px; letter-spacing: 0px; color: #172b4a; }
.content-wrap .content-text-desc { font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', Arial, sans-serif; font-weight: 400; font-size: 18px; line-height: 36px; letter-spacing: 0px; color: #3c4f6e; }
.content-text-wrap .tab_btn { position: relative; margin-top: 32px; width: 152px; height: 54px; line-height: 54px; font-size: 24px; text-align: center; overflow: hidden; border-radius: 28px; border: 1px solid transparent; }
.content-text-wrap .tab_btn_bg { position: absolute; top: 0; right: 0; left: 0; bottom: 0; border-radius: inherit; background: linear-gradient(89.54deg, #BBA0FF 0.68%, #4FD0FF 93.89%); }
.content-text-wrap .tab_btn .tab_btn_bg2 { position: absolute; top: 0; right: 0; left: 0; bottom: 0; margin: 1px; border-radius: inherit; }
.content-text-wrap .tab_btn .tab_btn_bg2.tab_btn_bg2-1 { background: #F0FAFF; }
.content-text-wrap .tab_btn_bg2.tab_btn_bg2-2 { background: #EAF5FE; }
.content-text-wrap .tab_btn_bg2.tab_btn_bg2-3 { background: #F2FBF6; }
.content-text-wrap .tab_btn_bg2.tab_btn_bg2-4 { background: #F8F5FE; }
.content-text-wrap .tab_btn:hover .tab_btn_bg2 { background: #fff; }
.content-text-wrap .tab_btn .tab_btn_inner { position: relative; background: linear-gradient(87.6deg, #BBA0FF 3.41%, #8D99FF 31.73%, #4494FF 68.39%, #4FD0FF 96.86%); background-clip: text; -webkit-background-clip: text; color: #8a99ff; -webkit-text-fill-color: transparent; }
.bg-middle { position: absolute; top: 1000px; right: 0; width: 773px; height: 1452.55px; z-index: -1; }
.bg-middle2 { position: absolute; top: 1850px; left: 0; width: 700px; height: 1320px; z-index: -1; }
.bg-bottom { position: absolute; bottom: 0; left: 0; width: 100%; height: fit-content; z-index: -1; }
/* 底部过渡：装饰图（.bg-bottom）下缘渐隐融入整站浅蓝白底色，避免与页脚之间出现硬切边。 */
.main-wrap::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 240px;
  background: linear-gradient(180deg, rgba(247, 251, 255, 0) 0%, rgba(247, 251, 255, .85) 62%, #f7fbff 82%);
  pointer-events: none; z-index: 0;
}
.bottom-download { position: sticky; bottom: 0px; width: 100%; height: 120px; margin-top: 60px; overflow-y: hidden; z-index: 1; }
.bottom-download #bottom-download-btn { display: block; margin: 28px auto 0; width: 209px; height: 88px; }
#bottom-download-btn img { display: block; width: 100%; height: 100%; }
.content-wrap .content-item { position: relative; display: flex; width: 100%; height: 500px; border-radius: 56px; }
.content-wrap .reveal-pending { opacity: 0; }
.banner-content-btn .banner-btn:last-child, #bottom-download-btn img:last-child { display: none !important; }
.banner-content-btn:is(:hover, :focus-visible) .banner-btn:first-child, #bottom-download-btn:is(:hover, :focus-visible) img:first-child { display: none !important; }
.banner-content-btn:is(:hover, :focus-visible) .banner-btn:last-child, #bottom-download-btn:is(:hover, :focus-visible) img:last-child { display: block !important; }
/* Keep the page gradient continuous through the download area and footer. */
.bottom-download { display: block; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity 200ms; background: transparent; }
.bottom-download.is-visible { opacity: 1; visibility: visible; pointer-events: auto; }
@media (max-width: 1400px) {
  .banner-lottie { width: 56%; height: auto; top: 180px; right: 16px; }
  .banner-wrap { height: 980px; }
  .content-text-wrap { width: 46%; flex-shrink: 0; }
  .content-text-wrap :is(.content-text-1, .content-text-2, .content-text-3, .content-text-4) { width: auto; height: auto; margin: 60px 24px; }
  .content-wrap :is(#main-lottie-1, #main-lottie-2, #main-lottie-3, #main-lottie-4) { transform: none; min-width: 0; }
  .content-wrap :is(#main-lottie-1, #main-lottie-2, #main-lottie-3, #main-lottie-4) .content-pic { width: 110%; height: auto; top: 80px; left: auto; right: 0; }
  .content-wrap :is(#main-lottie-1, #main-lottie-2, #main-lottie-3, #main-lottie-4) .content-pic-1 { max-width: 28%; height: auto; left: auto; right: 0; top: 0; }
  .content-wrap .content-text-title { font-size: 34px; }
}
@media (max-width: 1100px) {
  .banner-wrap { height: auto; overflow: visible; padding: var(--page-top) var(--site-gutter) 0; }
  .banner { display: flex; flex-direction: column; align-items: center; height: auto; }
  .banner-content { position: relative; left: auto; width: 100%; text-align: center; }
  .banner-content .banner-history { margin-left: auto; margin-right: auto; }
  .banner-lottie { position: relative; top: auto; right: auto; width: 100%; max-width: 660px; height: auto; margin-top: 28px; }
  #cert_blocks { position: static; transform: none; width: 100%; margin-top: 40px; }
  #cert_blocks h2 { font-size: 26px; height: auto; line-height: 1.5; }
  #cert_blocks p { font-size: 15px; height: auto; line-height: 1.8; }
  #cert_blocks .cert_list { gap: 10px; padding-right: 10px; }
  #cert_blocks .cert_list .partner-card { width: 118px; height: 108px; padding: 12px 6px; gap: 10px; }
  #cert_blocks .cert_track { animation-duration: 34s; }
  #cert_blocks .cert_list img { width: 36px; height: 36px; }
  .content-wrap { width: calc(100% - var(--site-gutter) * 2); padding-top: 64px; }
  .content-wrap .content-item { height: auto; margin-bottom: 32px; border-radius: 28px; }
  .content-wrap .content-item-wrap { flex-direction: column; height: auto; padding: 28px 20px 16px; }
  .content-text-wrap { width: 100%; height: auto; order: 0; }
  .content-text-wrap :is(.content-text-1, .content-text-2, .content-text-3, .content-text-4) { margin: 0; }
  .content-wrap .content-text-title { font-size: 28px; line-height: 1.5; height: auto; margin-bottom: 16px; }
  .content-wrap .content-text-desc, .content-wrap .content-text-desc-strong { font-size: 16px; line-height: 1.9; }
  .content-text-wrap .tab_btn { margin-top: 24px; font-size: 20px; }
  .content-wrap :is(#main-lottie-1, #main-lottie-2, #main-lottie-3, #main-lottie-4) { flex: none; order: 1; width: 100%; height: auto; margin-top: 24px; }
  .content-wrap :is(#main-lottie-1, #main-lottie-2, #main-lottie-3, #main-lottie-4) .content-pic { position: static; width: 100%; height: auto; }
  .content-wrap :is(#main-lottie-1, #main-lottie-2, #main-lottie-3, #main-lottie-4) .content-pic-1 { display: none; }
  .bg-middle, .bg-middle2 { max-width: 100%; height: auto; }
  .main-wrap::after { height: 150px; }
  .bottom-download { height: 100px; margin-top: 16px; }
  .bottom-download #bottom-download-btn { margin-top: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  .content-wrap .reveal-pending { opacity: 1; }
}
.banner-content .hero-copy { width: 100%; height: auto; display: block; text-align: left; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; }
.hero-copy .site-eyebrow { margin-bottom: 22px; }
.hero-copy .hero-heading { margin: 0; color: #172b4a; font-family: inherit; font-size: 62px; font-weight: 750; line-height: 1.24; letter-spacing: -2px; }
.hero-heading > span { display: block; font-family: inherit; white-space: nowrap; }
.hero-heading .hero-heading-accent { margin-top: 7px; padding-bottom: 6px; color: #506ce0; background: linear-gradient(105deg, #2586ed 0%, #5476eb 48%, #8c67dc 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-copy .hero-description { margin: 24px 0 14px; color: #53657e; font-size: 17px; line-height: 1.8; letter-spacing: .3px; }
.hero-copy .hero-capabilities { display: flex; flex-wrap: wrap; gap: 10px 0; padding: 0; margin: 0; color: #425a7a; font-size: 13px; font-weight: 500; line-height: 20px; }
.hero-capabilities li + li::before { content: ""; display: inline-block; width: 1px; height: 10px; margin: 0 13px; background: #9eafc6; }
@media (min-width: 1101px) and (max-width: 1400px) {
  .banner-content { width: 475px; }
  .hero-copy .hero-heading { font-size: 58px; }
}
@media (max-width: 1100px) {
  .banner-content { top: auto; }
  .banner-content .hero-copy { text-align: center; }
  .banner-content .banner-btn { transform: none; }
  .hero-copy .site-eyebrow { justify-content: center; }
  .hero-copy .hero-capabilities { justify-content: center; }
  .hero-copy .hero-heading { font-size: clamp(36px, 7vw, 62px); letter-spacing: -1px; }
  .hero-copy .hero-description { font-size: 16px; }
}
@media (max-width: 480px) {
  .hero-copy .site-eyebrow { margin-bottom: 18px; }
  .hero-copy .hero-heading { font-size: clamp(34px, 9.5vw, 44px); }
  .hero-copy .hero-description { font-size: 13px; letter-spacing: 0; margin: 20px 0 12px; }
  .hero-copy .hero-capabilities { font-size: 11px; }
  .hero-capabilities li + li::before { margin: 0 8px; }
  .banner-content .banner-btn { margin-top: 20px; }
}

.content-text-desc + .content-text-desc { margin-top: 12px; }
@media (max-width: 480px) {
  #cert_blocks .cert_list { gap: 8px; padding-right: 8px; }
  #cert_blocks .cert_list .partner-card { width: 104px; height: 94px; padding: 12px 5px; gap: 7px; border-radius: 12px; }
  #cert_blocks .cert_track { animation-duration: 26s; }
  #cert_blocks .partner-logo { height: 34px; }
  #cert_blocks .cert_list img { width: 32px; height: 32px; }
  #cert_blocks .partner-name { font-size: 11px; line-height: 18px; }
}
@media (max-width: 480px) and (hover: hover) and (pointer: fine) {
  #cert_blocks .cert_list .partner-card:hover img { transform: scale(1.12); }
}