:root{--ink:#1d1b34;--muted:#706d86;--purple:#6657e8;--purple-dark:#382ea7;--lav:#eeecff;--lav2:#ded9ff;--blue:#dff1ff;--paper:#f8f7fc;--line:#ddd9ec;--white:#fff;--dark:#211f3b}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:"Segoe UI","Microsoft YaHei UI",sans-serif;line-height:1.68}a{color:inherit;text-decoration:none}img{max-width:100%}.conversation-shell{width:min(1200px,calc(100% - 48px));margin-inline:auto}
.conversation-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);background:rgba(248,247,252,.94);backdrop-filter:blur(14px)}.conversation-nav{min-height:70px;display:grid;grid-template-columns:auto 1fr auto;gap:30px;align-items:center}.conversation-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:900}.conversation-brand img{display:block;width:34px;height:34px;object-fit:contain}.conversation-links{display:flex;justify-content:center;gap:clamp(18px,3vw,38px);color:var(--muted);font-size:13px;font-weight:800}.conversation-links a:hover{color:var(--purple)}
.conversation-button{display:inline-flex;align-items:center;justify-content:center;min-width:174px;min-height:52px;padding:0 24px;border:1px solid var(--purple);border-radius:12px;color:#fff;background:var(--purple);font-weight:900;white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb;transition:transform .2s ease,background .2s ease}.conversation-button:hover{background:var(--purple-dark);transform:translateY(-2px)}.conversation-button--small{min-width:128px;min-height:40px;padding-inline:15px}.conversation-text-link{color:var(--purple-dark);font-weight:900}a:focus-visible,summary:focus-visible{outline:3px solid #9a90ff;outline-offset:4px}
.dialogue-hero{padding:85px 0 105px;background:radial-gradient(circle at 78% 45%,#dcd8ff 0,#f6f4ff 35%,#f8f7fc 68%)}.dialogue-stage{position:relative;min-height:740px}.dialogue-intro{position:absolute;z-index:5;top:25px;left:0;width:53%}.conversation-label{margin:0 0 12px;color:var(--purple);font-size:9px;font-weight:900;letter-spacing:.14em}.dialogue-intro h1,.question-layout h2,.explanation-layout h2,.choice-layout h2,.device-copy h2,.capability-layout h2,.recovery-layout h2,.guide-layout h2,.faq-layout h2,.callout-layout h2{margin:0;font-family:"Arial Narrow","Microsoft YaHei UI",sans-serif;font-size:clamp(50px,6vw,82px);line-height:.97;letter-spacing:-.055em;text-wrap:balance}.dialogue-intro>p:not(.conversation-label){max-width:540px;margin:23px 0;color:var(--muted)}
.message-session{position:absolute;z-index:4;top:250px;left:4%;width:58%;padding:0 20px 22px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 24px 60px rgba(54,45,121,.13)}.session-bar{display:flex;justify-content:space-between;margin:0 -20px 18px;padding:11px 15px;border-bottom:1px solid var(--line);color:var(--muted);font-size:8px}.session-bar i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--purple)}.message{max-width:75%;margin:11px 0;padding:13px 15px;border-radius:4px 15px 15px 15px;background:var(--lav)}.message span{color:var(--purple);font-size:8px;font-weight:900}.message p{margin:5px 0}.message>div{display:flex;flex-wrap:wrap;gap:5px}.message b{padding:4px 7px;border:1px solid #c7c0f7;border-radius:7px;background:#fff;font-size:8px}.message--user{margin-left:auto;border-radius:15px 4px 15px 15px;background:#e1f2ff}.message--purpose{max-width:85%}.decision-note{margin-top:13px;padding:10px 13px;border-left:3px solid var(--purple);background:#f6f4fc}.decision-note strong{font-size:10px}.decision-note p{margin:3px 0;color:var(--muted);font-size:9px}
.assistant-preview{position:absolute;z-index:7;top:160px;right:3%;width:230px;height:auto;margin:0;padding:0;border:1px solid #b8b0e8;border-radius:18px;background:#fff;box-shadow:0 18px 50px rgba(56,46,167,.18);overflow:visible;transform:none;align-self:center}.assistant-preview figcaption,.device-preview figcaption{display:flex;justify-content:space-between;padding:9px 11px;border-bottom:1px solid var(--line);color:var(--muted);font-size:8px}.assistant-preview img,.device-preview img{display:block;width:100%;height:auto;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none;transform:none}
.question-section{padding:clamp(105px,13vw,165px) 0;background:#fff}.question-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:clamp(50px,8vw,105px)}.question-layout h2,.explanation-layout h2,.choice-layout h2,.device-copy h2,.capability-layout h2,.recovery-layout h2,.guide-layout h2,.faq-layout h2{font-size:clamp(40px,5vw,68px)}.question-thread{position:relative;padding-left:35px}.question-thread::before{content:"";position:absolute;top:0;bottom:0;left:8px;width:2px;background:var(--lav2)}.question-thread article{position:relative;padding:0 0 35px}.question-thread article::before{content:"";position:absolute;top:4px;left:-33px;width:12px;height:12px;border:4px solid var(--lav2);border-radius:50%;background:#fff}.question-thread span{color:var(--purple);font-size:9px;font-weight:900}.question-thread h3{margin:7px 0;font-size:22px}.question-thread p{margin:0;color:var(--muted)}.question-thread .thread-result{padding:20px;border-radius:12px;background:var(--lav)}.question-thread .thread-result::before{top:24px}
.explanation-section{padding:clamp(100px,12vw,150px) 0;background:var(--lav)}.explanation-layout>header{display:grid;grid-template-columns:.4fr 1.6fr;gap:38px;margin-bottom:60px}.explanation-layout dl{margin:0;border-top:1px solid #bab3e6}.explanation-layout dl>div{display:grid;grid-template-columns:250px 1fr;gap:40px;padding:20px 0;border-bottom:1px solid #c9c3ea}.explanation-layout dt{font-weight:900}.explanation-layout dd{margin:0;color:var(--muted)}
.choice-section{padding:clamp(100px,12vw,150px) 0;background:var(--dark);color:#fff}.choice-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:clamp(50px,8vw,105px)}.choice-stream article{display:grid;grid-template-columns:1fr 180px;gap:20px;align-items:center;margin-bottom:10px;padding:16px 18px;border:1px solid #484367;border-radius:5px 18px 18px 18px;background:#2b2849}.choice-stream p{margin:0}.choice-stream p span{margin-right:12px;color:#aca4ff;font-size:9px;font-weight:900}.choice-stream aside{color:#aba6c1;font-size:10px}
.device-dialogue{padding:clamp(100px,12vw,150px) 0;background:#f4f3fa}.device-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:clamp(50px,8vw,100px);align-items:center}.device-copy>p:not(.conversation-label){color:var(--muted)}.device-copy nav{display:flex;flex-wrap:wrap;gap:6px;margin:27px 0}.device-copy nav a{padding:7px 11px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--purple-dark);font-size:9px;font-weight:900}.device-preview{align-self:center;height:auto;margin:0;padding:0;border:1px solid var(--line);border-radius:18px;background:#fff;overflow:visible;transform:none}
.capability-dialogue{padding:clamp(100px,12vw,150px) 0;background:#fff}.capability-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:clamp(50px,8vw,105px)}.capability-layout>div{border-top:1px solid var(--line)}.capability-layout article{display:grid;grid-template-columns:160px 1fr;gap:25px;padding:19px 0;border-bottom:1px solid var(--line)}.capability-layout span{color:var(--purple-dark);font-weight:900}.capability-layout p{margin:0;color:var(--muted)}
.recovery-dialogue{padding:clamp(100px,12vw,150px) 0;background:#e8f4ff}.recovery-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:clamp(50px,8vw,105px)}.recovery-layout ol{list-style:none;margin:0;padding:0}.recovery-layout li{margin-bottom:9px;padding:17px 20px;border:1px solid #bfd9ed;border-radius:4px 16px 16px 16px;background:#fff}.recovery-layout span{font-weight:900}.recovery-layout p{margin:5px 0 0;color:var(--muted)}.recovery-layout>.conversation-text-link{grid-column:2}
.conversation-guides{padding:clamp(100px,12vw,150px) 0;background:#fff}.guide-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:clamp(50px,8vw,105px)}.guide-layout>div{border-top:1px solid var(--line)}.guide-layout article{display:grid;grid-template-columns:140px 1fr 1fr 50px;gap:20px;padding:19px 0;border-bottom:1px solid var(--line)}.guide-layout span,.guide-layout a{color:var(--purple-dark);font-weight:900}.guide-layout h3,.guide-layout p{margin:0}.guide-layout p{color:var(--muted)}.guide-layout a{text-align:right}
.conversation-faq{padding:clamp(100px,12vw,150px) 0;background:#f3f1ff}.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:clamp(50px,8vw,105px)}.faq-layout>div{border-top:1px solid #c9c4e4}.faq-layout details{border-bottom:1px solid #c9c4e4}.faq-layout summary{padding:20px 0;cursor:pointer;list-style:none;font-weight:900}.faq-layout summary::-webkit-details-marker{display:none}.faq-layout details p{margin:0 0 20px;color:var(--muted)}
.conversation-callout{padding:72px 0;background:var(--purple)}.callout-layout{display:grid;grid-template-columns:1fr auto;gap:50px;align-items:end;color:#fff}.callout-layout .conversation-label{color:#d8d4ff}.callout-layout h2{max-width:18ch}.conversation-button--dark{border-color:var(--dark);background:var(--dark)}
.conversation-footer{padding:52px 0 22px;color:#fff;background:#17152b}.footer-layout{display:grid;grid-template-columns:1.5fr .6fr .6fr;gap:46px}.footer-layout h3{margin:0 0 10px;color:#ada5ff;font-size:12px}.footer-layout>div>a:not(.conversation-brand){display:block;margin:7px 0;color:#a6a2b8;font-size:12px}.footer-layout>div:first-child p{color:#a6a2b8;font-size:12px}.copyright{grid-column:1/4;margin:20px 0 0;padding-top:18px;border-top:1px solid #3c3853;color:#75708b;font-size:10px}
@media(max-width:920px){.dialogue-intro{width:62%}.message-session{width:66%}.assistant-preview{right:0;width:190px}.question-layout,.choice-layout,.device-layout,.capability-layout,.recovery-layout,.guide-layout,.faq-layout{grid-template-columns:1fr}.recovery-layout>.conversation-text-link{grid-column:auto}.guide-layout article{grid-template-columns:130px 1fr}.guide-layout p{grid-column:2}.guide-layout a{grid-column:2;text-align:left}}
@media(max-width:680px){.conversation-shell{width:min(100% - 24px,1200px)}.conversation-nav{grid-template-columns:auto auto}.conversation-nav>.conversation-button{display:none}.conversation-links{grid-column:1/3;grid-row:2;justify-content:flex-start;overflow-x:auto;padding:10px 0}.dialogue-stage{min-height:1030px}.dialogue-intro{position:relative;top:auto;width:100%}.dialogue-intro h1{font-size:clamp(44px,13vw,62px)}.message-session{top:385px;left:0;width:100%}.assistant-preview{top:760px;right:50%;width:165px;transform:translateX(50%)}.explanation-layout>header{grid-template-columns:1fr}.explanation-layout dl>div{grid-template-columns:1fr;gap:6px}.choice-stream article{grid-template-columns:1fr}.capability-layout article{grid-template-columns:1fr;gap:5px}.guide-layout article{grid-template-columns:1fr}.guide-layout p,.guide-layout a{grid-column:auto}.callout-layout{grid-template-columns:1fr}.callout-layout .conversation-button{width:100%}.footer-layout{grid-template-columns:1fr 1fr}.footer-layout>div:first-child{grid-column:1/3}.copyright{grid-column:1/3}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.conversation-button{transition:none}}
.assistant-preview,.device-preview{align-self:center;height:auto;padding:0;margin-top:0;margin-bottom:0;overflow:visible}.assistant-preview img,.device-preview img{display:block;width:100%;height:auto;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none}