/* TrueSight website — slate, mist and quiet teal. */
:root{--ink:#243c47;--muted:#64747b;--accent:#416e70;--line:#dce5e5;--wash:#f3f6f5;--paper:#fff;--radius:16px;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;line-height:1.7}button,input,textarea{font:inherit}a{color:inherit;text-decoration:none}button,a,input,textarea,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}h1,h2,h3,p{margin:0}svg{display:block}button{border:0}button,input,textarea{border-radius:0}.wrap{width:min(1140px,calc(100% - 72px));margin-inline:auto}.muted{color:var(--muted)}
.site-header{border-bottom:1px solid var(--line);background:#fff}.nav{min-height:90px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;font-size:20px;font-weight:700;letter-spacing:2px;line-height:1.35}.brand-logo{width:32px;height:38px}.brand small{display:block;margin-top:6px;font-size:10px;color:var(--muted);letter-spacing:1px;font-weight:400}.nav nav{display:flex;gap:32px;font-size:14px;color:#586b73}.nav a:hover{color:var(--accent)}.nav-cta{border:1px solid var(--line);padding:8px 16px;font-size:13px;border-radius:6px}.nav-cta span{margin-left:14px}
.eyebrow{font-size:12px;letter-spacing:2px;font-weight:600;color:var(--accent);margin-bottom:20px}.hero{display:grid;grid-template-columns:1.02fr 1fr;gap:72px;align-items:center;padding-block:82px 86px}.hero-copy .eyebrow{display:flex;align-items:center;gap:10px}.eyebrow>span{width:6px;height:6px;border-radius:50%;background:#729694}.hero h1{font-size:clamp(42px,4.3vw,61px);line-height:1.25;letter-spacing:-2px;font-weight:650;margin-bottom:25px}.hero h1 span{color:var(--accent)}.intro{font-size:16px;color:var(--muted);line-height:1.9;max-width:470px}.actions{display:flex;gap:12px;margin-top:30px}.primary,.ghost{display:inline-flex;align-items:center;justify-content:center;gap:28px;min-height:48px;padding:12px 22px;border-radius:6px;font-size:14px;font-weight:600;transition:background .18s}.primary{background:var(--ink);color:#fff}.primary:hover{background:#355561}.ghost{color:var(--ink);border:1px solid var(--line);background:#fff}.ghost:hover{background:var(--wash)}.hero-note{font-size:12px;color:#77898d;margin-top:22px;letter-spacing:1px}
.connection{background:#f2f6f5;border:1px solid #dce6e4;border-radius:18px;padding:26px;position:relative}.diagram-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;font-size:13px;font-weight:600}.diagram-tag{font-size:10px;color:var(--muted);font-weight:400;letter-spacing:1px}.endpoint{display:flex;align-items:center;gap:14px;background:#fff;padding:22px 18px;border:1px solid #dfe8e6;border-radius:10px}.endpoint-icon{width:40px;height:46px;flex-shrink:0;display:grid;place-items:center;color:var(--accent)}.endpoint-icon svg{width:30px;fill:none;stroke:currentColor;stroke-width:1.3;stroke-linejoin:round;stroke-linecap:round}.endpoint small{font-size:10px;color:var(--muted);letter-spacing:1px}.endpoint h2{font-size:20px;font-weight:600;margin:2px 0 4px}.endpoint p{font-size:11px;color:var(--muted)}.endpoint-badge{font-size:10px;border:1px solid #d8e3df;color:#587972;border-radius:4px;padding:2px 8px;margin-left:auto;white-space:nowrap}.connection-path{height:64px;display:flex;align-items:center;gap:15px;padding-left:39px;font-size:10px;color:#778b8b;letter-spacing:1px}.path-line{height:48px;border-left:1px dashed #8fa9a6}.connection-path b{margin:0 8px;font-size:14px}.diagram-bottom{display:flex;gap:8px;justify-content:space-between;margin:23px 0 13px;color:#536f72;font-size:11px}.diagram-bottom span{padding:3px 13px;background:#e5edeb;border-radius:4px}.diagram-caption{font-size:10px;color:#7e9092;text-align:center}
.overview-strip{border-block:1px solid var(--line)}.overview-strip .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:22px;font-size:12px;color:var(--muted)}.overview-strip p{color:var(--ink)}.overview-strip a{white-space:nowrap}.overview-strip a:hover{color:var(--accent)}.section{padding-block:84px}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:50px;margin-bottom:42px}.section-head h2,.roles-intro h2,.help-layout h2{font-size:34px;line-height:1.4;letter-spacing:-.6px;font-weight:600}.section-head>p{max-width:370px;font-size:13px;color:var(--muted);line-height:1.9}.feature-group{display:grid;grid-template-columns:230px 1fr;gap:40px;padding-block:35px;border-top:1px solid var(--line);scroll-margin-top:24px}.group-heading{padding-top:4px}.group-number{font-size:12px;letter-spacing:1px;color:#829c9c;display:block;margin-bottom:10px}.group-heading h3{font-size:18px;font-weight:600;margin-bottom:9px}.group-heading p{font-size:12px;color:var(--muted);max-width:200px}.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 35px}.feature{position:relative;padding-left:34px}.feature-icon{position:absolute;left:0;top:4px;width:20px;height:20px;fill:none;stroke:var(--accent);stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round}.feature h3{font-size:15px;font-weight:600;margin-bottom:8px}.feature p{font-size:12px;color:var(--muted);line-height:1.85}.feature small{display:block;margin-top:8px;font-size:10px;color:#637c7d}
.roles-section{background:#243e48;color:#edf3f3;padding-block:66px}.roles-layout{display:grid;grid-template-columns:.8fr 1.5fr;gap:65px;align-items:start}.roles-intro .eyebrow{color:#a0beb8}.roles-intro>p:not(.eyebrow){font-size:13px;color:#bacacc;line-height:1.9;max-width:260px;margin-top:20px}.text-link{display:inline-block;font-size:12px;margin-top:27px;border-bottom:1px solid #68878e;padding-bottom:6px;color:#e5edeb}.text-link span{margin-left:25px}.roles{display:grid;grid-template-columns:1fr 1fr;gap:30px}.roles article{border-top:1px solid #537078;padding-top:24px}.role-label{font-size:12px;color:#b0cbc4;letter-spacing:2px}.roles h3{font-size:18px;font-weight:500;margin:20px 0 14px}.roles p{font-size:12px;color:#bdccce;line-height:1.95}.role-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.role-tags span{font-size:10px;color:#bbd0ce;border-bottom:1px solid #526f75;padding-bottom:4px}
.process{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;margin-bottom:40px}.process article{border-top:1px solid var(--line);padding-top:20px}.process span{font-size:12px;color:#7d9895}.process h3{font-size:18px;font-weight:600;margin:12px 0 10px}.process p{font-size:13px;color:var(--muted);max-width:295px}.permission{display:flex;gap:22px;align-items:center;border-radius:8px;padding:24px 28px;background:var(--wash)}.permission svg{width:30px;height:36px;flex-shrink:0;stroke:var(--accent);fill:none;stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round}.permission h3{font-size:14px;font-weight:600;margin-bottom:5px}.permission p{font-size:12px;color:var(--muted)}
.help-section{padding-block:58px;background:#f7f9f8;border-block:1px solid var(--line)}.help-layout{display:grid;grid-template-columns:1fr 1.5fr;gap:65px}.help-layout .muted{font-size:12px;margin-top:22px}.faq details{padding:20px 0;border-bottom:1px solid var(--line)}.faq details:first-child{padding-top:0}.faq summary{display:flex;justify-content:space-between;gap:20px;list-style:none;cursor:pointer;font-size:14px;font-weight:500}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";color:#68837f;font-size:18px;flex-shrink:0}.faq details[open] summary:after{content:"−"}.faq p{font-size:12px;line-height:1.9;color:var(--muted);padding-top:12px;padding-right:25px}.contact{padding-block:62px;display:flex;align-items:center;justify-content:space-between;gap:30px}.contact .eyebrow{margin-bottom:9px}.contact h2{font-size:32px;font-weight:600}.contact p:not(.eyebrow){font-size:13px;color:var(--muted);margin-top:8px}.footer{border-top:1px solid var(--line);padding-block:32px 80px}.footer>.wrap{display:flex;justify-content:space-between;align-items:center;gap:24px}.footer .brand{font-size:16px}.footer .brand-logo{width:26px;height:30px}.footer p{font-size:10px;color:var(--muted);margin-top:10px}.footer-links{display:flex;gap:28px;font-size:12px;color:var(--muted)}
.fab{position:fixed;bottom:24px;right:24px;z-index:20;display:flex;gap:7px;align-items:center;padding:12px 19px;border:1px solid #55727a;border-radius:40px;background:var(--ink);color:white;box-shadow:0 6px 20px #203c461f;font-size:13px}.fab i{font-style:normal;font-size:18px}.chat{display:none;position:fixed;z-index:30;right:24px;bottom:24px;width:min(365px,calc(100vw - 28px));height:510px;max-height:calc(100dvh - 32px);flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 15px 65px #18334033;overflow:hidden}.chat.show{display:flex}.chat-head{display:flex;justify-content:space-between;align-items:center;background:var(--wash);padding:14px;border-bottom:1px solid var(--line)}.agent{display:flex;align-items:center;gap:10px}.avatar{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:#dce7e4;color:var(--accent);font-size:13px}.chat-head strong,.chat-head small{display:block}.chat-head strong{font-size:13px}.chat-head small{font-size:10px;color:var(--muted)}.chat-close{background:transparent;color:var(--muted);font-size:24px;padding:0 8px}.messages{flex:1;min-height:0;overflow:auto;padding:16px;background:#fafcfb}.welcome{font-size:12px;color:var(--muted);padding:12px;background:white;border:1px solid var(--line);border-radius:8px}.msg{display:flex;margin:10px 0}.msg.visitor{justify-content:flex-end}.bubble{max-width:87%;background:#fff;border:1px solid var(--line);padding:9px 12px;border-radius:10px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px}.visitor .bubble{background:var(--ink);color:#fff;border-color:var(--ink)}.bubble time{display:block;font-size:9px;color:#72898e;margin-top:5px}.visitor time{color:#b9cece}.compose{padding:12px;border-top:1px solid var(--line)}.compose input,.compose textarea{width:100%;border:1px solid var(--line);border-radius:6px;padding:9px;background:#fff;color:var(--ink);font-size:16px}.compose input{margin-bottom:7px}.compose textarea{height:64px;resize:none}.compose input:focus,.compose textarea:focus{outline:2px solid #a9c4be;outline-offset:1px}.send-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:7px}.feedback{font-size:11px;color:var(--muted)}.send{padding:7px 19px;border-radius:5px;background:var(--ink);color:#fff;font-size:12px}
@media(min-width:1500px){.hero{padding-block:105px}.hero h1{font-size:66px}}
@media(max-width:1000px){.hero{gap:30px}.connection{padding:19px}.endpoint{gap:8px;padding:18px 12px}.endpoint-badge{display:none}.nav nav{gap:18px}.feature-group{grid-template-columns:190px 1fr;gap:22px}.roles-layout{gap:30px;grid-template-columns:.75fr 1.5fr}.roles{gap:20px}.roles h3{font-size:16px}.diagram-bottom span{padding:3px 9px}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.nav{min-height:76px;flex-wrap:wrap;gap:18px;padding-block:17px}.brand{font-size:18px}.brand-logo{width:28px;height:34px}.brand small{font-size:9px}.nav nav{order:3;width:100%;justify-content:space-between;font-size:12px;border-top:1px solid #edf1ef;padding-top:12px}.nav-cta{font-size:11px;padding:7px 10px}.nav-cta span{margin-left:6px}.hero{grid-template-columns:1fr;padding-block:43px;gap:32px}.hero h1{font-size:44px;letter-spacing:-1.5px}.intro{font-size:14px}.desktop-break{display:none}.hero-copy .eyebrow{font-size:10px}.hero-note{font-size:10px}.connection{padding:20px;max-width:510px;width:100%;justify-self:center}.endpoint{gap:15px;padding:18px 16px}.endpoint-badge{display:block}.diagram-top{margin-bottom:18px}.connection-path{height:48px}.path-line{height:36px}.overview-strip .wrap{flex-wrap:wrap;gap:13px;font-size:10px;padding-block:18px}.overview-strip p{width:100%;font-size:12px}.section{padding-block:50px}.section-head{display:block;margin-bottom:26px}.section-head h2,.roles-intro h2,.help-layout h2{font-size:28px}.section-head>p{margin-top:16px;max-width:480px;font-size:12px}.eyebrow{margin-bottom:12px;font-size:11px}.feature-group{grid-template-columns:1fr;gap:24px;padding-block:27px}.group-heading{display:flex;gap:17px;align-items:start}.group-number{margin-top:4px}.group-heading h3{font-size:17px;margin-bottom:5px}.group-heading p{max-width:none}.feature-grid{gap:25px}.feature{padding-left:0}.feature-icon{position:static;margin-bottom:12px}.feature h3{font-size:14px}.feature p{font-size:11px}.feature small{font-size:10px}.roles-section{padding-block:44px}.roles-layout{grid-template-columns:1fr;gap:35px}.roles-intro>p:not(.eyebrow){max-width:450px;margin-top:14px}.roles-intro h2 br{display:none}.text-link{margin-top:14px}.roles{gap:20px}.roles h3{line-height:1.6;font-size:15px}.roles p{font-size:11px}.role-tags{gap:8px}.process{grid-template-columns:1fr;gap:22px;margin-bottom:28px}.process article{display:grid;grid-template-columns:28px 1fr;gap:4px 14px;padding-top:18px}.process h3{margin:0;font-size:16px}.process span{padding-top:3px}.process p{grid-column:2;max-width:none;font-size:12px}.permission{align-items:flex-start;gap:15px;padding:20px}.permission p{font-size:11px}.help-section{padding-block:42px}.help-layout{grid-template-columns:1fr;gap:30px}.help-layout h2 br{display:none}.help-layout .muted{margin-top:12px}.faq summary{font-size:13px}.contact{padding-block:43px;flex-wrap:wrap;gap:20px}.contact h2{font-size:28px}.footer>.wrap{align-items:start;flex-direction:column}.footer-links{gap:24px}.fab{right:15px;bottom:16px}.chat{right:14px;bottom:14px}}
@media(max-width:370px){.wrap{width:calc(100% - 32px)}.hero h1{font-size:39px}.feature-grid{grid-template-columns:1fr}.feature{padding-left:31px}.feature-icon{position:absolute;top:3px}.endpoint-badge{display:none}.connection{padding:16px}.endpoint{padding:16px 10px}.endpoint p{font-size:10px}.roles{grid-template-columns:1fr}.actions{gap:8px}.primary,.ghost{padding:12px 15px;gap:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}