/* 官网视觉层：清晰的大标题、克制的蓝色与真实产品材质。工作区样式独立维护。 */
:root{--ink:#182a45;--muted:#708099;--accent:#2b68ef;--line:#e5eaf2;--ease:cubic-bezier(.22,1,.36,1);font-size:16px;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:108px}body{margin:0;background:#fff;color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;color:inherit}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}[hidden]{display:none!important}h1,h2,h3,p,figure{margin:0}img{max-width:100%;display:block}svg{display:block}code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}pre{margin:0}.wrap{width:min(1160px,calc(100% - 80px));margin-inline:auto}.section{padding-block:110px}.eyebrow{display:block;font-size:11px;line-height:1.6;font-weight:600;letter-spacing:2px}.blue-label{color:var(--accent)}.skip-link{position:fixed;top:12px;left:16px;z-index:100;transform:translateY(-200%);padding:12px;background:white}.skip-link:focus{transform:none}
/* 浮动导航与首屏自然光。 */
.site-header{position:fixed;inset:0 0 auto;z-index:50;transition:background .3s;border-bottom:1px solid transparent}.site-header.is-scrolled{background:#ffffffed;backdrop-filter:blur(18px);border-color:var(--line)}.nav-shell{width:min(1280px,calc(100% - 80px));margin:auto;display:flex;align-items:center;justify-content:space-between;height:88px;gap:25px}.brand{display:inline-flex;align-items:center;gap:9px;font-size:19px;font-weight:730;letter-spacing:-.6px;white-space:nowrap}.brand img{padding:3px;background:#eaf4ff;border-radius:10px}.brand-dot{color:var(--accent)}.desktop-nav{display:flex;gap:30px;font-size:14px;color:#596a82}.desktop-nav a:hover{color:var(--accent)}.nav-actions{display:flex;gap:12px;align-items:center}.nav-start{background:#1d2d44;color:#fff;padding:11px 16px;border-radius:8px;font-size:13px}.nav-start span{margin-left:14px}.menu-button{display:none;width:40px;height:40px;background:#edf2fb;border-radius:8px;align-items:center;justify-content:center;flex-direction:column;gap:5px}.menu-button span{width:16px;height:2px;background:var(--ink)}.mobile-menu{padding:6px 24px 22px;background:white;border-bottom:1px solid var(--line)}.mobile-menu a{display:block;padding:13px 0;font-size:15px}.hero{position:relative;isolation:isolate;overflow:hidden;background:linear-gradient(#fcfdff,#f5f8fd 75%,#fff);padding-top:130px}.hero-light{position:absolute;inset:0;z-index:-1;background:radial-gradient(ellipse at 55% 38%,#dce9ff90,transparent 65%);pointer-events:none}.hero-copy{text-align:center}.hero .eyebrow{color:#566d8b;display:flex;align-items:center;justify-content:center;gap:8px}.pill-icon{display:grid;place-items:center;background:#e4edff;color:#3f77ed;width:23px;height:23px;border-radius:7px;letter-spacing:0}.hero h1{font-size:clamp(42px,4.7vw,64px);line-height:1.3;letter-spacing:-3px;font-weight:740;margin:23px 0}.hero h1 span{display:inline-block}.accent-text{color:var(--accent);background:linear-gradient(115deg,#154ac2,#2b68ef 60%,#40a5e6);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-description{font-size:18px;line-height:1.9;color:#6c7e96}.button{padding:15px 23px;border-radius:9px;font-size:14px;display:inline-flex;align-items:center;justify-content:center;gap:22px;transition:transform .25s,box-shadow .25s}.button.primary{color:#fff;background:var(--accent);box-shadow:0 6px 18px #2966ed25}.button.primary:hover{transform:translateY(-3px);box-shadow:0 12px 25px #2966ed30}.text-button{padding-inline:8px;gap:9px;color:#526785}.play-icon{font-size:20px}.platform-note{font-size:12px;color:#74849a;display:flex;gap:8px;align-items:center;justify-content:center}.note-separator{margin-inline:8px}.hero-stage{position:relative;margin-top:52px;width:min(1050px,calc(100% - 80px))}.stage-caption{text-align:center;font-size:11px;color:#7f8da0;margin-top:25px;letter-spacing:1px}.providers{padding:3px 0 17px;text-align:center;scroll-margin-top:100px}.provider-list{display:flex;align-items:center;justify-content:center;gap:28px}.provider-list>span{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;letter-spacing:-.5px}.provider-list img{width:21px;height:21px}.providers>p{margin-top:10px;font-size:13px;color:#78869a}
/* 体验区保留大幅应用界面，路径引导只负责导航同一套状态。 */
.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:38px}.section-heading h2{font-size:48px;line-height:1.35;letter-spacing:-1.5px;margin-top:17px;font-weight:650}.section-heading>p{font-size:16px;line-height:1.95;color:#64768f;padding-bottom:5px}.experience-guide{display:flex;align-items:center;gap:10px;margin-bottom:18px}.experience-guide>span{font-size:12px;color:#77869a;margin-right:auto}.experience-guide button{font-size:12px;background:#f4f7fb;padding:12px 16px;border:1px solid #e5eaf2;border-radius:10px;transition:background .2s}.experience-guide button:hover{background:#e9f1ff}.experience-guide button>span{margin-left:18px;color:#7d93b4}.demo-caption{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-top:18px;font-size:11px;color:#7a8ba0;line-height:1.8}.demo-caption button{background:none;font-size:12px;color:#526d97;padding:8px;white-space:nowrap}
/* 首屏直接表达用途；能力以单一组件展示，切换时保持区域高度稳定。 */
.hero-highlights{list-style:none;padding:0;margin:20px 0 0;display:flex;justify-content:center;gap:24px;flex-wrap:wrap}.hero-highlights li{font-size:13px;color:#526f97;display:flex;align-items:center;gap:7px}.hero-highlights li:before{content:"✓";color:#2b68ef;font-size:12px}.hero .providers{width:100%}.hero .eyebrow{letter-spacing:2px}.capability-section{padding-top:58px}.capability-component{border:1px solid #dfe8f4;background:linear-gradient(120deg,#f5f9ff,#fff);border-radius:18px;overflow:hidden}.capability-top{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:24px 30px;border-bottom:1px solid #e4ecf7}.capability-top h2{font-size:20px;line-height:1.5;font-weight:600;letter-spacing:-.5px}.capability-tabs{display:flex;gap:4px;flex:none;background:#eaf0f880;padding:4px;border-radius:12px}.capability-tabs button{padding:9px 16px;font-size:14px;background:transparent;border-radius:9px;color:#6c7e96;white-space:nowrap;transition:background .2s,color .2s,box-shadow .2s}.capability-tabs button[aria-selected=true]{background:#fff;color:#245dda;box-shadow:0 2px 7px #2c527315}.capability-panel{display:flex;align-items:center;justify-content:space-between;gap:35px;padding:26px 30px;min-height:126px}.capability-panel h3{font-size:18px;font-weight:600;line-height:1.6;margin-bottom:7px}.capability-panel p{font-size:15px;line-height:1.85;color:#64768f}.capability-panel a{flex:none;font-size:13px;color:#2b68ef;border:1px solid #c9dbf5;border-radius:8px;padding:10px 15px;background:white;white-space:nowrap}.capability-panel a:hover{background:#edf4ff}
/* 接入说明位于安全之后，保留清晰的步骤层级。 */
.how-section{background:linear-gradient(135deg,#f1f6fd,#fbfcff 65%);border-block:1px solid #e9eef6;padding-block:85px}.how-layout{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:start}.how-intro{position:sticky;top:130px}.how-intro h2{font-size:48px;line-height:1.35;font-weight:650;letter-spacing:-1.5px;margin:18px 0 23px}.how-intro>p{font-size:16px;line-height:1.9;color:#64768f}.handoff-route{display:flex;align-items:center;gap:10px;margin:36px 0 25px;max-width:370px}.handoff-route span{font-size:12px;background:#fff;border:1px solid #dce6f5;border-radius:9px;padding:10px;white-space:nowrap}.handoff-route i{height:1px;background:linear-gradient(90deg,#c0d3f0,#2b68ef);flex:1;min-width:10px}.how-intro .how-requirement{font-size:12px;color:#78889d}.how-steps{list-style:none;margin:0;padding:0}.how-steps li{display:flex;align-items:flex-start;gap:23px;position:relative;padding-bottom:40px}.how-steps li:last-child{padding-bottom:0}.how-steps li:not(:last-child):after{content:"";position:absolute;top:50px;bottom:10px;left:21px;width:1px;background:#dce5f2}.step-number{width:44px;height:44px;border-radius:14px;flex:none;display:grid;place-items:center;background:white;border:1px solid #dce6f5;color:#2b68ef;font-size:12px}.step-context{font-size:12px;color:#8291a7;display:block;margin-bottom:6px}.how-steps h3{font-size:21px;font-weight:600;margin:0 0 12px;line-height:1.5}.how-steps p{font-size:15px;color:#64768f;line-height:1.95}.how-steps a{display:inline-block;color:#2b68ef;font-size:13px;margin-top:15px;border-bottom:1px solid #2b68ef40;padding-bottom:3px}.how-steps a:hover{border-color:#2b68ef}.experience{padding-top:65px}.faq-section{scroll-margin-top:90px}#faq-tools{scroll-margin-top:120px}
/* 安全与开始区域使用柔和卡片，重要行为仍由用户主动触发。 */
.control-section{padding-top:35px}.control-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.control-card{padding:38px;border:1px solid #e4ebf4;border-radius:20px;background:#f8faff;overflow:hidden}.privacy-card{background:#f4f9fa}.card-eyebrow{font-size:10px;color:#74869e;letter-spacing:1.7px}.card-copy h3{font-size:34px;line-height:1.45;letter-spacing:-1px;font-weight:600;margin:18px 0}.card-copy p{font-size:15px;line-height:1.9;color:#64768f}.connection-diagram{display:flex;align-items:center;gap:18px;margin:45px 0 35px}.connection-node{display:flex;flex-direction:column;align-items:center;gap:12px}.connection-node>svg{width:58px;height:58px;stroke:#6b91a5;stroke-width:1.3;fill:none}.connection-node>span{font-size:12px;color:#657f92}.encrypted-link{flex:1;position:relative}.encryption-badge{display:flex;align-items:center;justify-content:center;gap:5px;font-size:10px;color:#5c8a89;margin-bottom:16px;white-space:nowrap}.encryption-badge svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.4}.connection-line{display:block;height:1px;background:#bcd6da;position:relative;overflow:hidden}.connection-line i{position:absolute;width:30%;height:2px;background:#4f9dba;left:-30%;animation:flow 3s linear infinite;animation-play-state:paused}.diagram-running .connection-line i{animation-play-state:running}.privacy-note{font-size:12px;line-height:1.8;color:#688394}/* 结尾只保留清晰的行动入口；完整准备流程已前置。 */
.start-section{background:#245dda;color:white;padding:75px 0;position:relative;overflow:hidden}.start-section:before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse at 0 0,#67b9ed60,transparent 60%)}.start-layout{display:flex;justify-content:space-between;align-items:center;gap:60px;position:relative}.start-copy .eyebrow{color:#c8dcff;font-size:11px}.start-copy h2{font-size:52px;font-weight:600;letter-spacing:-2px;line-height:1.35;margin:23px 0}.start-copy>p{font-size:15px;color:#d0e0ff;line-height:1.9}.start-actions{max-width:300px;display:flex;align-items:center;flex-direction:column;gap:20px;flex:none}.start-primary{background:white;color:#245dda;font-weight:600;width:100%}.start-primary:hover{transform:translateY(-3px);box-shadow:0 12px 30px #153f9d30}.start-secondary{font-size:14px;color:#e1ecff;border-bottom:1px solid #ffffff60;padding-bottom:4px}.availability-note{font-size:12px;line-height:1.9;color:#d2e2ff;text-align:center;margin-top:5px}
.faq-section{display:grid;grid-template-columns:1fr 1.3fr;gap:80px}.faq-intro h2{font-size:40px;font-weight:600;line-height:1.45;margin-top:18px;letter-spacing:-1px}.faq-list details{border-bottom:1px solid var(--line);padding:23px 0}.faq-list details:first-child{padding-top:0}.faq-list summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:16px}.faq-list summary::-webkit-details-marker{display:none}.faq-plus{width:14px;height:14px;position:relative;flex:none}.faq-plus:before,.faq-plus:after{content:"";position:absolute;background:#7790ae}.faq-plus:before{height:1px;width:14px;top:7px}.faq-plus:after{width:1px;height:14px;left:7px;transition:transform .2s}details[open] .faq-plus:after{transform:rotate(90deg)}.faq-list p{font-size:14px;line-height:1.95;color:#6b7f98;margin-top:18px}.footer{border-top:1px solid var(--line);padding-top:30px;overflow:hidden}.footer-top{display:flex;align-items:center;gap:25px}.footer-top p{font-size:14px;color:#6d819c;margin-left:auto}.back-top{font-size:12px;color:#6b819f;margin-left:30px}.back-top span{margin-left:12px}.footer-bottom{display:flex;gap:25px;align-items:center;margin-top:28px;font-size:11px;color:#7a8ca5}.motion-toggle{margin-left:auto;background:#f2f6fb;border-radius:6px;padding:8px 12px;font-size:11px;color:#647d9c}.motion-toggle:disabled{cursor:default}.footer-wordmark{font-size:clamp(50px,9.7vw,140px);font-weight:700;letter-spacing:-6px;color:#edf1f7;margin-top:30px;line-height:1.1;white-space:nowrap}
/* 入场只播放一次；持续光点由可见性控制。 */
.hero-enter{animation:enter .85s var(--ease) both}.hero-copy h1{animation-delay:.07s}.hero-description{animation-delay:.14s}.hero-stage{animation-delay:.28s}.motion-ready .reveal{transition:opacity .7s var(--ease),transform .7s var(--ease)}.motion-ready .reveal:not(.is-visible){opacity:0;transform:translateY(22px)}@keyframes enter{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@keyframes flow{to{left:110%}}
@media(max-width:950px){.desktop-nav{gap:18px;font-size:12px}.nav-shell{width:calc(100% - 48px)}.wrap{width:calc(100% - 48px)}.section-heading h2{font-size:40px}.control-card{padding:28px}.start-layout{gap:50px}.experience-guide{flex-wrap:wrap}.experience-guide>span{width:100%}.experience-guide button{flex:1;padding:12px 8px}.experience-guide button>span{margin-left:5px}.faq-section{gap:40px}.hero-stage{width:calc(100% - 48px)}.provider-list{gap:35px}.provider-list>span{font-size:14px}}
@media(max-width:700px){html{scroll-padding-top:88px}.wrap,.hero-stage{width:calc(100% - 32px)}.nav-shell{width:calc(100% - 32px);height:72px;gap:10px}.brand{font-size:16px;gap:6px}.brand img{width:30px;height:30px}.desktop-nav{display:none}.nav-start{font-size:11px;padding:10px}.nav-start span{display:none}.menu-button{display:flex}.hero{padding-top:115px}.hero h1{font-size:37px;letter-spacing:-2px;margin:22px 0}.hero h1 span{display:block}.hero .eyebrow{font-size:9px}.hero-description{font-size:15px}.button{font-size:12px;padding:13px 16px;gap:12px}.text-button{padding-inline:4px}.platform-note{font-size:10px;flex-wrap:wrap;gap:5px}.note-separator{margin-inline:3px}.hero-stage{margin-top:32px}.stage-caption{font-size:9px;letter-spacing:.3px;margin-top:20px}.providers{padding:0 0 16px}.provider-list{gap:22px;flex-wrap:wrap}.provider-list>span{font-size:13px;gap:7px}.provider-list img{width:22px;height:22px}.providers>p{font-size:12px;margin-top:19px}.section{padding-block:65px}.section-heading{display:block;margin-bottom:26px}.section-heading h2{font-size:35px;line-height:1.4;margin-top:14px}.section-heading>p{font-size:15px;margin-top:18px}.eyebrow{font-size:10px}.experience-guide{gap:7px}.experience-guide button{flex-basis:calc(50% - 7px);text-align:left;padding:10px 12px;display:flex;justify-content:space-between}.experience-guide>span{font-size:11px;margin-bottom:2px}.demo-caption{align-items:flex-start;font-size:10px;gap:5px}.demo-caption button{font-size:10px;padding-top:0}.control-section{padding-top:0}.control-grid{grid-template-columns:1fr;gap:18px}.control-card{padding:27px;border-radius:15px}.card-copy h3{font-size:29px}.card-copy p{font-size:14px}.connection-diagram{margin-top:35px}.start-section{padding:58px 0}.start-layout{flex-direction:column;align-items:flex-start;gap:30px}.start-actions{width:100%;max-width:360px;align-items:flex-start}.availability-note{text-align:left}.start-copy h2{font-size:40px}.availability-note{gap:12px}.faq-section{grid-template-columns:1fr;gap:32px}.faq-intro h2{font-size:34px}.faq-list summary{font-size:15px}.footer-top{flex-wrap:wrap;gap:15px}.footer-top p{order:3;width:100%;font-size:13px}.back-top{margin-left:auto}.footer-bottom{flex-wrap:wrap;gap:12px;line-height:1.8}.footer-bottom>span:nth-child(2){order:3;width:100%}.footer-wordmark{letter-spacing:-2px;font-size:9.7vw}.motion-toggle{font-size:10px}}
@media(max-width:360px){.nav-start{display:none}.hero h1{font-size:32px}.provider-list{gap:15px}.provider-list>span{font-size:12px}.provider-list img{width:19px;height:19px}.hero-description{font-size:14px}.control-card{padding:21px}}
/* 新增内容随窄屏收为单列；流程在手机上保持正常阅读，不使用吸附滚动。 */
@media(max-width:950px){.how-layout{gap:50px}.how-intro h2{font-size:40px}.start-copy h2{font-size:43px}}
@media(max-width:700px){.how-section{padding-block:58px}.how-layout{grid-template-columns:1fr;gap:40px}.how-intro{position:static}.how-intro h2{font-size:35px}.handoff-route{margin:25px 0 19px}.how-steps li{gap:17px;padding-bottom:32px}.how-steps h3{font-size:20px}.how-steps p{font-size:15px}.experience{padding-top:40px}.start-copy h2{font-size:38px}.start-copy>p{font-size:14px}.start-actions{gap:17px}.start-layout{gap:28px}.handoff-route span{font-size:11px}.desktop-nav{display:none}}
@media(max-width:950px){.capability-top{flex-direction:column;align-items:flex-start;gap:17px}.capability-tabs{align-self:stretch;justify-content:space-between}.capability-tabs button{flex:1}.hero-highlights{gap:17px}}
@media(max-width:700px){.hero-highlights{gap:8px 14px;margin-top:18px}.hero-highlights li{font-size:11px}.hero-highlights li:last-child{flex-basis:100%;justify-content:center}.hero .eyebrow{font-size:11px}.hero h1{letter-spacing:-1.5px;line-height:1.4}.hero-description{font-size:15px}.hero .providers>p{font-size:11px}.hero .provider-list{gap:18px}.hero .provider-list>span{font-size:12px}.hero .provider-list img{width:19px;height:19px}.capability-section{padding-top:32px}.capability-top{padding:20px 18px;gap:15px}.capability-top h2{font-size:19px}.capability-tabs{padding:3px;gap:0}.capability-tabs button{padding:9px 6px;font-size:12px;min-width:0}.capability-panel{padding:20px 18px;flex-direction:column;align-items:flex-start;gap:17px;min-height:211px}.capability-panel h3{font-size:18px}.capability-panel p{font-size:14px}.capability-panel a{font-size:12px;padding:8px 13px}}
body.reduce-motion *,body.reduce-motion *:before,body.reduce-motion *:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}body.reduce-motion .reveal{opacity:1!important;transform:none!important}html:has(body.reduce-motion){scroll-behavior:auto}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.motion-ready .reveal:not(.is-visible){opacity:1;transform:none}}

/* 场景控制采用低调的选中态，只承担产品展示导航。 */
.experience-guide button[aria-pressed="true"]{background:#eaf1fc;color:#295fb3;border-color:#cddcf3}

/* 协议与客服链接独立换行，小屏保持触达区域，不挤占减少动效按钮。 */
.footer-legal{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:22px;font-size:13px;color:#526c91}.footer-legal a{padding-block:8px}.footer-legal a:hover{text-decoration:underline;text-underline-offset:4px}