@charset "UTF-8";
@font-face{font-family:Inter;src:url("fonts/InterVariable.woff2") format("woff2");font-style:normal;font-weight:100 900;font-display:swap}
@font-face{font-family:Pretendard;src:url("fonts/PretendardVariable.woff2") format("woff2");font-style:normal;font-weight:100 900;font-display:swap}
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/* Contact uses the same type rhythm in both languages. */
.contact-panel{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:56px 0;border-top:1px solid var(--line)}.contact-panel h2{font-size:36px}.contact-panel address{font-style:normal;display:grid;gap:10px;font-size:16px;line-height:1.75}.contact-panel address>a:first-child{font-size:24px;color:#bde7ff;font-weight:600}.contact-panel address>a:hover{text-decoration:underline;text-underline-offset:5px}.contact-panel address p{margin-top:14px;color:var(--muted);font-size:15px}.footer{flex-wrap:wrap}.footer .association-footer{margin-left:auto}@media(max-width:600px){.contact-panel{grid-template-columns:1fr;gap:26px;padding:38px 0}.contact-panel h2{font-size:30px}.contact-panel address>a:first-child{font-size:22px}.footer .association-footer{margin-left:0;margin-top:20px}}
/* A: dark, brand-led product launch */
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/* B: warm editorial, human-first */
body.concept-b{--ink:#14354a;--muted:#607581;--blue:#1767c9;--line:#d3dddf;--paper:#f7f6ef;background:var(--paper)}.concept-b .topnav{padding:24px 0;border-bottom:1px solid var(--line)}.b-hero{padding:64px 0 55px;display:grid;grid-template-columns:1.25fr 1fr;gap:50px;align-items:center}.b-hero h1{font-size:clamp(45px,5.1vw,68px);margin:12px 0 22px}.b-hero h1 em{font-style:normal;font-family:Georgia,serif;font-weight:400;letter-spacing:-.04em;color:#2477cf}.b-hero .lead{max-width:510px;font-size:15px}.b-illustration{height:390px;background:#dcecf1;border-radius:50% 50% 20px 20px;position:relative;display:flex;flex-direction:column;justify-content:center;gap:23px;padding:50px 30px 25px}.b-illustration::before{content:'HELLO, TOGETHER.';font:11px Consolas,monospace;letter-spacing:.2em;text-align:center;color:#488191;position:absolute;top:35px;left:0;right:0}.b-person{display:flex;align-items:center;gap:16px}.b-person.reverse{flex-direction:row-reverse}.b-avatar{border-radius:28px;width:64px;height:64px;display:grid;place-items:center;flex-shrink:0;background:#ecd3b8;color:#735737;font-size:18px;font-weight:700;transform:rotate(-6deg)}.b-person.reverse .b-avatar{background:#6fc4f8;color:#1b4b67;transform:rotate(6deg)}.b-speech{background:#fffdf9;border-radius:15px;padding:16px 20px;box-shadow:0 8px 0 #a5c6d333;font-size:15px;color:#24465a;line-height:1.6}.b-speech small{display:block;font:10px Consolas,monospace;color:#829498;margin-bottom:6px}.b-illustration .fine{text-align:center;margin-top:2px;font-size:10px}.b-strip{background:#163d52;color:white;border-radius:16px;padding:23px 35px;display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:14px}.b-strip p{color:#afc9d8;font-size:12px}.b-strip strong{font-size:17px}.b-story{display:grid;grid-template-columns:.65fr 1.35fr;gap:100px}.b-story .story-rows{border-top:1px solid var(--line)}.b-step{display:grid;grid-template-columns:46px 1fr;gap:20px;padding:29px 0;border-bottom:1px solid var(--line)}.b-step .step-no{font:24px Georgia,serif;color:#6798b0}.b-step h3{margin-bottom:10px}.b-step p{font-size:14px}.b-section{background:#ecefe7;padding:74px 0}.b-section .guide{background:#fdfcf7;border-radius:2px;padding:30px;border-bottom:3px solid #1d749b}.b-large-quote{font-size:clamp(28px,4vw,48px);line-height:1.4;letter-spacing:-.05em;max-width:760px;margin-bottom:44px}.b-download{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:center}.concept-b .download-panel{background:#fffdf7;border-radius:3px;border-top:4px solid #3b8ab3}.concept-b .version{font-family:Georgia,serif;font-weight:400;font-size:61px}.concept-b .roadmap-item{padding-left:20px;padding-right:20px}.concept-b .faq{padding-bottom:80px}
/* C: software release desk */
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/* Supporting pages and comparison */
.support .topnav{border-bottom:1px solid var(--line)}.support-main{padding:65px 0 90px;max-width:900px}.support-main h1{font-size:48px;margin-bottom:25px}.support-main>.lead{max-width:760px;margin-bottom:35px}.article-body{font-size:17px;line-height:1.95;max-width:750px}.article-body p{margin-bottom:24px}.article-meta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:22px 0 35px;font-size:13px;color:var(--muted)}.support-main .download-panel{max-width:600px}.gallery{background:#f2f5f9}.gallery-head{padding:60px 0 35px}.gallery-head h1{font-size:48px;margin:24px 0 16px;max-width:750px}.gallery-head p{max-width:760px}.gallery-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:23px;padding-bottom:50px}.concept-card{border:1px solid #d4e0ec;border-radius:18px;overflow:hidden;background:#fff;display:flex;flex-direction:column}.concept-shot{height:240px;overflow:hidden;background:#d9e5ef;border-bottom:1px solid #d4e0ec}.concept-shot img{width:100%;height:100%;object-fit:cover;object-position:top}.concept-info{padding:27px;display:flex;flex-direction:column;flex:1}.concept-info>span{font:12px Consolas,monospace;color:#66809b;letter-spacing:.1em}.concept-info h2{font-size:26px;margin:8px 0 16px}.concept-info p{font-size:14px;margin-bottom:22px}.concept-info .button{margin-top:auto}.compare-details{padding:35px;background:white;border:1px solid #d4e0ec;border-radius:17px;margin-bottom:45px}.compare-details h2{font-size:24px;margin-bottom:20px}.compare-details ul{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 35px;font-size:14px;color:#627288}.compare-details li::before{content:'✓';margin-right:10px;color:#2c82c7}.gallery-notice{font-size:13px;margin-bottom:45px;padding-left:17px;border-left:3px solid #78bae7}.gallery-notice strong{color:var(--ink)}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

/* Selected A identity: bilingual type, association identity, and human/AI connections. */
html{font-synthesis:none;text-size-adjust:100%;-webkit-text-size-adjust:100%}
body{font-family:Inter,Pretendard,"Segoe UI",sans-serif;font-size:16px;font-weight:400;line-height:1.75;word-break:normal;overflow-wrap:break-word;-webkit-font-smoothing:antialiased}
html[lang="ko"] body{font-family:Pretendard,Inter,"Malgun Gothic",sans-serif;word-break:keep-all}
html[lang="en"] h1,html:not([lang]) h1{letter-spacing:-.052em;line-height:1.08;font-weight:760}
html[lang="en"] h2,html:not([lang]) h2{letter-spacing:-.04em;line-height:1.2;font-weight:700}
html[lang="en"] h3,html:not([lang]) h3{letter-spacing:-.025em;line-height:1.35;font-weight:650}
html[lang="ko"] h1{letter-spacing:-.04em;line-height:1.22;font-weight:750}
html[lang="ko"] h2{letter-spacing:-.035em;line-height:1.3;font-weight:700}
html[lang="ko"] h3{letter-spacing:-.025em;line-height:1.45;font-weight:650}
h1,h2,h3{text-wrap:balance}
p{line-height:1.8}
.eyebrow{font-size:11px;font-weight:650;letter-spacing:.16em}
.fine,.demo-note{line-height:1.65}
.feature p,.section-head p,.faq details p{font-size:15px;line-height:1.8}
.navlinks{font-weight:500}
.button{font-weight:650;letter-spacing:-.015em}
.guide b{font-weight:650;letter-spacing:-.025em}
.version{font-variant-numeric:tabular-nums;letter-spacing:-.045em}
.update-row time,.article-meta time,.specs{font-variant-numeric:tabular-nums}
.concept-a .a-hero{gap:56px;padding-top:58px;align-items:center}
.concept-a .a-hero h1{font-size:clamp(44px,4.65vw,65px)}
.concept-a .a-hero .lead{font-size:17px;line-height:1.8;max-width:31em}
.concept-a .hero-art{min-width:0}
.concept-a .demo-wrap{transform:none;min-width:0}
.concept-a .demo{box-shadow:0 22px 65px #0003;background:#152332}
.demo-body{min-width:0;grid-template-columns:minmax(94px,118px) minmax(0,1fr)}
.demo-chat,.demo-side,.msg{min-width:0}
.demo-tabs{flex-wrap:wrap;gap:8px}
.demo-tab{font-family:inherit;font-size:12px;font-weight:600;padding:8px 14px;min-height:36px}
.demo-top{gap:14px;font-size:12px;line-height:1.4}
.demo-side{font-size:12px;line-height:1.5}
.demo-chat{gap:22px}
.msg-label{font-size:11px;line-height:1.5;letter-spacing:.005em}
.bubble{font-size:14px;line-height:1.65;overflow-wrap:break-word}
.demo-note{font-size:12px;text-align:left;margin-top:14px;max-width:48em}

.site-utility.wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:22px;padding-bottom:17px;border-bottom:1px solid var(--line)}
.association-link{display:inline-flex;align-items:center;justify-content:center;gap:14px;flex:0 1 auto;padding:9px 13px;background:#fff;border:1px solid #e5eaf0;border-radius:8px;color:#0b2a6b;line-height:1.4;text-decoration:none;min-width:0}
.association-link img{display:block;position:static;width:157px;max-width:100%;height:auto;max-height:64px;object-fit:contain;transform:none;filter:none;opacity:1;mix-blend-mode:normal}
.association-link>span{max-width:220px;font-size:11px;font-weight:550;line-height:1.5}
.association-link:hover{border-color:#83b8d6;box-shadow:0 0 0 2px #90d4ff16}
.language-switch{display:flex;align-items:center;flex:0 0 auto;gap:12px;font-size:13px;font-weight:500;line-height:1.4;color:var(--muted);white-space:nowrap}
.language-switch a{display:inline-flex;align-items:center;min-height:38px;padding:5px 0;text-underline-offset:6px}
.language-switch a:hover{color:var(--ink)}
.language-switch a[aria-current="page"],.language-switch a[aria-current="true"]{color:var(--ink);font-weight:700;text-decoration:underline;text-decoration-thickness:2px;text-decoration-color:var(--blue)}
.language-switch span[aria-hidden]{opacity:.45;font-weight:400}
.association-footer{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:20px}
.association-footer .association-link{padding:8px 11px}
.association-footer .association-link img{width:151px}
.association-footer p,.association-footer>span{font-size:12px;line-height:1.7;max-width:35em;color:var(--muted)}
.footer:has(.association-footer){display:grid;grid-template-columns:1fr auto;align-items:end;padding-top:34px;padding-bottom:34px}
.footer:has(.association-footer)>.association-footer{grid-column:1/-1}
.footer:has(.association-footer) .footer-links{align-self:end;flex-wrap:wrap}

.connection-section.wrap{padding-top:62px;padding-bottom:74px;border-top:1px solid var(--line)}
.connection-heading{display:grid;grid-template-columns:1.05fr 1fr;align-items:end;gap:50px;margin-bottom:32px}
.connection-heading h2{font-size:clamp(30px,3.2vw,43px);max-width:19ch}
.connection-heading p{font-size:16px;line-height:1.8;max-width:41em}
.connection-heading .eyebrow{margin-bottom:12px}
.connection-diagram{border:1px solid #2f4557;border-radius:22px;padding:32px 38px;background:linear-gradient(135deg,#182733,#12202b);box-shadow:0 15px 40px #00000012}
.connection-row{display:grid;grid-template-columns:minmax(0,1fr) 108px minmax(0,1fr);align-items:stretch;gap:22px}
.connection-person,.connection-ai{display:flex;align-items:center;gap:20px;min-width:0;padding:23px 24px;border:1px solid #46515b;border-radius:14px;background:#202c36}
.connection-ai{border-color:#35546e;background:#172e40}
.node-symbol{display:flex;align-items:center;justify-content:center;flex:0 0 64px;width:64px;height:64px;border-radius:18px;background:#eee9df;color:#26333c;font-size:20px;font-weight:750;line-height:1;letter-spacing:-.035em}
.connection-ai .node-symbol{background:#85cfff;color:#103a58}
.node-symbol svg{width:34px;height:34px;display:block;overflow:visible}
.node-symbol img{width:38px;height:38px;object-fit:contain;display:block}
.connection-person h3,.connection-ai h3{font-size:19px;color:#f5f2ec;line-height:1.3;margin:0 0 5px}
.connection-person p,.connection-ai p{font-size:13px;color:#b2c1cc;line-height:1.6;max-width:28em}
.connection-person>div,.connection-ai>div{min-width:0}
.connection-arrow{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;font-size:13px;font-weight:550;color:#b0d5eb;line-height:1.4;white-space:nowrap}
.connection-arrow b,.connection-arrow strong{font-size:25px;font-weight:400;line-height:1;color:#7fc9f3;letter-spacing:.03em}
.connection-arrow small,.connection-arrow span{font-size:12px;font-weight:550;line-height:1.4}
.connection-vertical{display:grid;grid-template-columns:1fr 1fr;gap:152px;margin:12px 0;text-align:center;color:#8ebbd5;font-size:12px;font-weight:550;line-height:1.5}
.connection-vertical>*{display:flex;align-items:center;justify-content:center;gap:9px;min-height:38px}
.connection-vertical b,.connection-vertical strong{font-size:23px;font-weight:400;line-height:1;color:#77b7dc}
.connection-note{max-width:75em;font-size:13px;line-height:1.75;color:#9eb2c2;margin-top:20px}
.connection-note strong{color:#cbdde9;font-weight:600}

/* Documentation, downloads, and release notes belong to the selected A theme. */
body.support{--ink:#f1f5f8;--muted:#a9bbca;--line:#2e4052;--blue:#86d1ff;--paper:#10171f;background:var(--paper);color:var(--ink)}
.support .previewbar{background:#253d51;color:#d5eafa}
.support .topnav{padding:25px 0}
.support .support-main{padding-top:65px;padding-bottom:100px}
.support-main h1{font-size:clamp(38px,5vw,60px);max-width:22ch;line-height:1.14;margin-bottom:25px}
.support-main>.lead{font-size:18px;line-height:1.8;max-width:43em}
.support .download-panel{background:#182634;border-color:#344b60;max-width:660px}
.support .guide{background:#17232f}
.support .button.primary{background:#8cd6ff;color:#0b283e}
.support .button.unavailable{background:#34495b;color:#b8cbd9}
.support .button.secondary{color:#e5eef5;border-color:#446077}
.support .button.light{background:#233d50;color:#d5eeff}
.support .filter[aria-pressed=true]{background:#84cffb;color:#11293b;border-color:#84cffb}
.support .article-body{font-size:17px;line-height:1.9;color:var(--muted)}
.support .article-body p{line-height:1.9}
.support .article-body h2{font-size:28px;line-height:1.3;margin:38px 0 18px;color:var(--ink)}
.support .article-body h3{font-size:21px;line-height:1.4;margin:27px 0 12px;color:var(--ink)}
.support .article-body strong{color:#e3edf4}
.support .article-body ul,.support .article-body ol{padding-left:23px;margin:18px 0 25px;list-style:disc}
.support .article-body ol{list-style:decimal}
.support .article-body li{margin-bottom:10px;padding-left:3px}
.support .article-body a{color:var(--blue);text-decoration:underline;text-underline-offset:4px;overflow-wrap:anywhere}
.support .article-body code{color:#d8ecf8;background:#203343;border-radius:5px;padding:2px 6px;font-size:.9em;overflow-wrap:anywhere}
.support .update-row:hover h3{color:#a8deff}
.support .article-meta{gap:12px 18px}

@media(max-width:1100px){
  .concept-a .a-hero{gap:32px;grid-template-columns:1fr 1fr}
  .concept-a .a-hero h1{font-size:clamp(43px,5vw,56px)}
  .connection-row{grid-template-columns:minmax(0,1fr) 84px minmax(0,1fr);gap:17px}
  .connection-diagram{padding:28px}
  .connection-person,.connection-ai{padding:21px 18px;gap:15px}
  .node-symbol{flex-basis:54px;width:54px;height:54px;border-radius:15px}
  .connection-vertical{gap:118px}
}
@media(max-width:860px){
  .concept-a .a-hero{grid-template-columns:1fr;gap:38px;padding-top:42px}
  .concept-a .a-hero h1{font-size:clamp(44px,6.5vw,62px);max-width:15ch}
  html[lang="ko"] .concept-a .a-hero h1{max-width:none}
  .concept-a .hero-art{margin:0;max-width:640px;width:100%}
  .connection-heading{grid-template-columns:1fr;gap:20px}
  .connection-heading h2{max-width:24ch}
  .connection-heading p{max-width:43em}
  .connection-row{gap:13px;grid-template-columns:minmax(0,1fr) 68px minmax(0,1fr)}
  .connection-person,.connection-ai{flex-direction:column;align-items:flex-start;gap:13px;padding:21px}
  .connection-person h3,.connection-ai h3{font-size:18px}
  .connection-vertical{gap:94px}
}
@media(max-width:600px){
  .site-utility.wrap{padding-top:16px;padding-bottom:15px;gap:16px}
  .association-link{padding:7px 9px;border-radius:6px}
  .association-link img{width:136px;max-height:56px}
  .association-link>span{display:none}
  .language-switch{font-size:12px;gap:10px}
  .concept-a .topnav,.support .topnav{padding:22px 0;gap:18px}
  .navlinks{font-size:13px;gap:17px;row-gap:9px;line-height:1.5}
  .concept-a .a-hero{padding-top:30px;padding-bottom:45px;gap:34px}
  .concept-a .a-hero h1{font-size:clamp(39px,9.5vw,54px);margin:21px 0 23px}
  .concept-a .a-hero .lead{font-size:16px;line-height:1.85}
  .concept-a .hero-art{margin:0}
  .demo-top{padding:13px 14px;font-size:11px;gap:9px}
  .demo-body{grid-template-columns:88px minmax(0,1fr);min-height:290px}
  .demo-side{font-size:11px;padding:15px 6px}
  .demo-side div{padding:9px 6px;overflow-wrap:break-word}
  .demo-chat{padding:19px 13px;gap:22px}
  .bubble{font-size:13px;padding:11px 12px;max-width:100%}
  .msg.mine{width:96%}
  .demo-tabs{gap:7px}
  .demo-tab{padding:8px 12px}
  .demo-note{font-size:11px}
  .connection-section.wrap{padding-top:45px;padding-bottom:52px}
  .connection-heading{gap:16px;margin-bottom:25px}
  .connection-heading h2{font-size:32px}
  .connection-heading p{font-size:15px}
  .connection-diagram{padding:18px 13px;border-radius:17px}
  .connection-row{grid-template-columns:minmax(0,1fr) 44px minmax(0,1fr);gap:7px}
  .connection-person,.connection-ai{padding:17px 12px;gap:13px;border-radius:11px}
  .node-symbol{width:48px;height:48px;flex-basis:48px;font-size:17px;border-radius:14px}
  .node-symbol svg{width:30px;height:30px}
  .connection-person h3,.connection-ai h3{font-size:16px;line-height:1.35;margin-bottom:7px}
  .connection-person p,.connection-ai p{font-size:12px;line-height:1.65}
  .connection-arrow{gap:8px;font-size:10px;white-space:normal}
  .connection-arrow b,.connection-arrow strong{font-size:22px}
  .connection-arrow small,.connection-arrow span{font-size:10px;line-height:1.5}
  .connection-vertical{gap:58px;font-size:11px;margin:7px 0}
  .connection-vertical>*{gap:6px;min-height:32px}
  .connection-vertical b,.connection-vertical strong{font-size:20px}
  .connection-note{font-size:12px;margin-top:17px}
  .footer:has(.association-footer){display:block;padding-top:28px;padding-bottom:30px}
  .association-footer{gap:14px;margin-bottom:20px}
  .association-footer .association-link img{width:136px}
  .association-footer p,.association-footer>span{font-size:11px}
  .support .support-main{padding-top:42px;padding-bottom:65px}
  .support-main h1{font-size:38px;line-height:1.18}
  .support-main>.lead{font-size:16px}
  .support .article-body{font-size:16px}
  .support .article-body h2{font-size:25px}
  .support .article-body h3{font-size:20px}
}
@media(max-width:380px){
  .association-link img{width:121px}
  .language-switch{gap:8px;font-size:11px}
  .demo-body{grid-template-columns:73px minmax(0,1fr)}
  .demo-side{font-size:10px;padding:14px 4px}
  .demo-chat{padding:18px 10px}
  .connection-diagram{padding:15px 10px}
  .connection-person,.connection-ai{padding:15px 10px}
  .connection-row{grid-template-columns:minmax(0,1fr) 36px minmax(0,1fr);gap:6px}
  .connection-vertical{gap:48px}
  .connection-person h3,.connection-ai h3{font-size:15px}
}
/* Brand hierarchy: ChatTalk leads; association remains a discreet linked mark. */
.site-utility .association-link{padding:7px 10px}.site-utility .association-link img{width:132px;max-height:none}.site-utility .association-link>span{display:none}.concept-a .brand{width:232px;height:60px}.connection-heading h2{margin-top:15px}.connection-heading>.eyebrow{grid-column:1/-1}.connection-heading>p{align-self:center}.demo-side{overflow-wrap:normal}.demo-side div{overflow-wrap:normal;word-break:normal}@media(max-width:600px){.concept-a .brand{width:216px;height:56px}.site-utility .association-link img{width:119px}}