@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.fixed{position:fixed}.static{position:static}.start{inset-inline-start:var(--spacing)}.contents{display:contents}}:root{--ink:#0d0e0d;--panel:#191a17;--bone:#eee9df;--soft:#c8c1b5;--muted:#89867e;--line:#eee9df1f;--line2:#eee9df38;--orange:#ef6d42;--orange2:#ff9a70;--green:#78b89a;--violet:#8684ff;--gold:#d7ad62}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--bone);background:var(--ink);text-rendering:optimizelegibility;margin:0;font-family:Microsoft YaHei UI,PingFang SC,Noto Sans CJK SC,sans-serif}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}main{background:radial-gradient(circle at 86% 8%,#ef6d4217,transparent 25%),radial-gradient(circle at 6% 33%,#78b89a0a,transparent 24%),var(--ink);min-height:100vh;overflow:clip}.nav-shell{z-index:100;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:#10110fc7;border:1px solid #eee9df21;border-radius:18px;justify-content:space-between;align-items:center;width:min(1180px,100% - 36px);height:64px;padding:0 12px 0 18px;display:flex;position:fixed;top:18px;left:50%;transform:translate(-50%);box-shadow:0 18px 70px #00000038}.brand,.footer-brand{align-items:center;gap:11px;display:flex}.brand img{border-radius:10px;width:34px;height:34px}.brand span{letter-spacing:.08em;font-family:STSong,SimSun,serif;font-size:21px;font-weight:700}.nav-links{color:var(--soft);gap:30px;font-size:13px;display:flex}.nav-links a:hover{color:var(--bone)}.nav-cta,.button-primary,.button-secondary{border-radius:12px;justify-content:center;align-items:center;gap:12px;font-size:13px;transition:transform .2s,border-color .2s,background .2s;display:inline-flex}.nav-cta{color:#1b100b;background:var(--orange);height:40px;padding:0 17px;font-weight:700}.nav-cta:hover,.button-primary:hover{background:#fa7950;transform:translateY(-2px)}.hero{grid-template-columns:1fr 1fr;align-items:center;gap:42px;width:min(1320px,100% - 48px);min-height:940px;margin:0 auto;padding:170px 0 110px;display:grid}.hero-copy{z-index:4;padding-left:22px;position:relative}.eyebrow,.section-label,.manifesto-kicker{color:var(--orange2);letter-spacing:.12em;text-transform:uppercase;align-items:center;gap:10px;font-family:Consolas,SFMono-Regular,monospace;font-size:12px;display:flex}.eyebrow-pulse{background:var(--orange);border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 6px #ef6d421f}.hero h1{letter-spacing:-.045em;text-wrap:balance;word-break:normal;line-break:strict;max-width:720px;margin:25px 0 28px;font-family:STSong,Songti SC,SimSun,serif;font-size:clamp(46px,4.15vw,68px);font-weight:600;line-height:1.18}.hero h1 .hero-title-system{color:var(--bone);display:inline}.hero h1 .hero-title-system-tail:before{content:" "}.hero h1 .hero-title-promise{color:#f6c6b4;display:block}.desktop-break{display:block}.mobile-break{display:none}.hero-lead{max-width:650px;color:var(--soft);margin:0;font-size:17px;line-height:2}.hero-actions{gap:12px;margin-top:38px;display:flex}.button-primary{background:var(--orange);color:#1c100c;min-height:50px;padding:0 21px;font-weight:700}.button-secondary{border:1px solid var(--line2);min-height:50px;color:var(--soft);padding:0 21px}.button-secondary:hover{color:var(--bone);border-color:#eee9df73}.hero-notes{color:var(--muted);flex-wrap:wrap;gap:10px 22px;margin-top:34px;font-size:11px;display:flex}.hero-notes span:before{content:"·";color:var(--green);margin-right:8px}.hero-visual{perspective:1500px;min-height:680px;position:relative}.thread-map{position:absolute;inset:4% 0 0 4%}.thread-line{transform-origin:0;background:linear-gradient(90deg,transparent,var(--orange),var(--green),transparent);opacity:.55;height:1px;position:absolute}.thread-line:after{content:"";width:7px;height:7px;box-shadow:0 0 20px var(--orange);background:#fff2e8;border-radius:50%;animation:5s ease-in-out infinite travel;position:absolute;top:-3px;left:35%}.thread-line-a{width:78%;top:17%;left:2%;transform:rotate(17deg)}.thread-line-b{opacity:.28;width:64%;top:31%;left:28%;transform:rotate(-20deg)}.thread-node{color:var(--soft);flex-direction:column;gap:4px;display:flex;position:absolute}.thread-node i{border:2px solid var(--ink);background:var(--orange);border-radius:50%;width:13px;height:13px;margin-bottom:4px;box-shadow:0 0 0 1px #ef6d42bf,0 0 22px #ef6d427a}.thread-node small{color:var(--muted);letter-spacing:.12em;font-family:Consolas,monospace;font-size:9px}.thread-node strong{font-family:STSong,SimSun,serif;font-size:15px;font-weight:500}.node-seed{top:10%;left:0}.node-read{top:24%;left:39%}.node-read i{background:var(--gold);box-shadow:0 0 0 1px #d7ad62b3}.node-practice{top:9%;right:1%}.node-practice i{background:var(--green);box-shadow:0 0 0 1px #78b89ab3}.app-window{background:#11110f;border:1px solid #eee9df2e;border-radius:22px;position:absolute;overflow:hidden;box-shadow:0 50px 120px #0000008c}.hero-window{width:92%;top:25%;right:-8%;transform:rotateY(-8deg)rotateX(2deg)rotate(-1deg)}.window-bar{border-bottom:1px solid var(--line);height:54px;color:var(--muted);background:#151513;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 18px;font-size:10px;display:grid}.window-brand{color:var(--bone);align-items:center;gap:8px;font-family:STSong,serif;font-size:14px;display:flex}.window-brand img{border-radius:7px;width:23px;height:23px}.window-stage{color:var(--orange2)}.window-status{justify-self:end;align-items:center;gap:7px;display:flex}.window-status i{background:var(--green);border-radius:50%;width:7px;height:7px;box-shadow:0 0 9px #78b89ab3}.window-screenshot{aspect-ratio:1.78;object-fit:cover;object-position:55% 22%;opacity:.84;filter:saturate(.82)contrast(1.03);width:100%}.floating-note{z-index:5;border:1px solid var(--line2);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#1f1f1beb;position:absolute;box-shadow:0 22px 55px #00000061}.floating-note small{color:var(--muted);margin-bottom:6px;font-size:9px;display:block}.floating-note strong{color:var(--bone);font-family:STSong,serif;font-size:14px;line-height:1.5;display:block}.note-one{border-radius:14px;width:250px;padding:17px 19px;bottom:11%;left:-3%}.note-two{border-radius:14px;align-items:center;gap:12px;width:218px;padding:15px;display:flex;bottom:2%;right:-4%}.note-two>span{width:29px;height:29px;color:var(--green);border:1px solid #78b89a66;border-radius:50%;flex:none;place-items:center;display:grid}.manifesto{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#11120f;padding:140px max(24px,50% - 590px)}.manifesto-kicker{margin-bottom:28px}.manifesto p{letter-spacing:-.035em;text-wrap:balance;word-break:normal;line-break:strict;max-width:1120px;margin:0;font-family:STSong,Songti SC,serif;font-size:clamp(34px,3.9vw,60px);line-height:1.5}.manifesto em{color:var(--green);font-style:normal}.steps-section,.product-section,.engine-section,.alpha-section{width:min(1180px,100% - 48px);margin:0 auto}.steps-section{padding:150px 0}.section-heading{justify-content:space-between;align-items:end;gap:56px;margin-bottom:64px;display:flex}.section-heading>span{color:var(--orange2);letter-spacing:.12em;white-space:nowrap;font-family:Consolas,monospace;font-size:12px}.section-heading h2,.product-copy h2,.engine-heading h2,.alpha-copy h2{letter-spacing:-.03em;text-wrap:balance;word-break:normal;line-break:strict;margin:0;font-family:STSong,Songti SC,serif;font-size:clamp(34px,3.45vw,50px);font-weight:600;line-height:1.4}.section-heading h2{max-width:760px}.steps-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.step-card{border:1px solid var(--line);background:var(--panel);min-height:360px;padding:27px 28px 34px;position:relative;overflow:hidden}.step-card:first-child{border-radius:28px 8px 8px 28px}.step-card:last-child{border-radius:8px 28px 28px 8px}.step-index{color:var(--orange);font-family:Consolas,monospace;font-size:13px}.step-card>span{color:var(--muted);margin-top:72px;font-size:11px;display:block}.step-card h3{margin:12px 0 15px;font-family:STSong,serif;font-size:25px;line-height:1.45}.step-card p{color:var(--soft);margin:0;font-size:14px;line-height:1.9}.step-thread{background:#ffffff0a;height:4px;position:absolute;bottom:0;left:0;right:0}.step-thread i{background:var(--orange);width:32%;height:100%;display:block}.step-card:nth-child(2) .step-thread i{background:var(--gold);width:64%}.step-card:nth-child(3) .step-thread i{background:var(--green);width:100%}.product-section{border-top:1px solid var(--line);grid-template-columns:.9fr 1.1fr;align-items:center;gap:68px;padding:130px 0;display:grid}.product-section-reverse{grid-template-columns:1.1fr .9fr}.product-section-reverse .product-copy{grid-column:2}.product-section-reverse .product-shot{grid-area:1/1}.section-label.violet{color:var(--violet)}.product-copy h2,.engine-heading h2{margin-top:22px}.product-copy>p,.engine-heading>p{color:var(--soft);margin:26px 0 0;font-size:15px;line-height:2}.product-copy ul{color:var(--soft);gap:15px;margin:34px 0 0;padding:0;font-size:13px;list-style:none;display:grid}.product-copy li{align-items:center;gap:11px;display:flex}.product-copy li i{background:var(--orange);border-radius:50%;width:6px;height:6px;box-shadow:0 0 0 4px #ef6d421a}.product-shot{border:1px solid var(--line);background:#131411;border-radius:24px;padding:12px;box-shadow:0 35px 100px #00000052}.shot-caption{color:var(--muted);gap:14px;padding:5px 7px 16px;font-size:11px;display:flex}.shot-caption span{color:var(--orange);font-family:Consolas,monospace}.product-shot img{border:1px solid #ffffff0f;border-radius:15px;width:100%}.learning-demo-section{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:radial-gradient(circle at 78% 22%,#78b89a1c,#0000 26%),radial-gradient(circle at 13% 78%,#ef6d4217,#0000 28%),#10110f;position:relative}.learning-demo-shell{grid-template-columns:.73fr 1.27fr;column-gap:92px;width:min(1180px,100% - 48px);margin:0 auto;padding:138px 0 28px;display:grid}.learning-demo-header{grid-column:1/-1;max-width:780px;margin-bottom:38px}.learning-demo-header h2{letter-spacing:-.04em;text-wrap:balance;margin:22px 0 0;font-family:STSong,Songti SC,serif;font-size:clamp(38px,3.85vw,56px);font-weight:600;line-height:1.33}.learning-demo-header p{max-width:570px;color:var(--soft);margin:24px 0 0;font-size:15px;line-height:2}.learning-demo-stage{grid-area:2/2;align-self:start;place-items:center;min-height:calc(100vh - 122px);display:grid;position:sticky;top:96px}.learning-demo-story{grid-area:2/1}.learning-scene{opacity:.34;border-left:1px solid #eee9df29;flex-direction:column;justify-content:center;min-height:73vh;padding:36px 0 36px 34px;transition:opacity .5s;display:flex;position:relative}.learning-scene:before{content:"";background:#3c3d38;border-radius:50%;width:9px;height:9px;transition:background .45s,box-shadow .45s;position:absolute;top:50%;left:-5px;box-shadow:0 0 0 5px #10110f}.learning-scene.is-active{opacity:1}.learning-scene.is-active:before{background:var(--orange);box-shadow:0 0 0 5px #10110f,0 0 22px #ef6d42c2}.learning-scene>span{color:var(--orange2);letter-spacing:.11em;font-family:Consolas,SFMono-Regular,monospace;font-size:10px}.learning-scene h3{letter-spacing:-.03em;max-width:410px;margin:17px 0 0;font-family:STSong,Songti SC,serif;font-size:clamp(28px,2.65vw,40px);font-weight:600;line-height:1.42}.learning-scene p{max-width:400px;color:var(--soft);margin:20px 0 0;font-size:14px;line-height:2}.dialogue-mockup{background:linear-gradient(150deg,#191b17fa,#0c0d0bfc);border:1px solid #eee9df33;border-radius:26px;width:min(100%,645px);min-height:615px;position:relative;overflow:hidden;box-shadow:0 44px 110px #00000080}.dialogue-mockup:before{content:"";z-index:0;filter:blur(16px);pointer-events:none;background:#78b89a1f;border-radius:50%;width:280px;height:280px;position:absolute;top:115px;right:-110px}.dialogue-topbar{z-index:2;border-bottom:1px solid var(--line);height:60px;color:var(--muted);background:#161814f2;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 19px;font-size:10px;display:grid;position:relative}.dialogue-product,.dialogue-live{align-items:center;gap:8px;display:flex}.dialogue-product{color:var(--bone);font-family:STSong,serif;font-size:16px}.dialogue-product i{background:linear-gradient(135deg,var(--orange),#f6c6b4);border-radius:6px;width:17px;height:17px}.dialogue-live{color:var(--green);justify-self:end}.dialogue-live i{background:var(--green);border-radius:50%;width:6px;height:6px;box-shadow:0 0 11px #78b89ad9}.dialogue-context{z-index:1;background:#0a0c0a6b;border:1px solid #eee9df1a;border-radius:14px;grid-template-columns:1fr auto;gap:7px 16px;margin:19px 20px 0;padding:15px 16px;display:grid;position:relative}.dialogue-context span{color:var(--orange2);letter-spacing:.1em;grid-column:1/-1;font-family:Consolas,SFMono-Regular,monospace;font-size:9px}.dialogue-context strong{font-family:STSong,serif;font-size:16px;font-weight:500}.dialogue-context small{color:var(--muted);align-self:end;font-family:Consolas,monospace;font-size:9px}.dialogue-thread{z-index:1;flex-direction:column;justify-content:center;gap:9px;min-height:385px;padding:18px 20px 35px;display:flex;position:relative}.dialogue-message{opacity:0;align-self:flex-start;max-width:88%;max-height:0;margin:0;transition:max-height .42s,margin .42s,padding .42s,opacity .42s,transform .42s;overflow:hidden;transform:translateY(13px)}.dialogue-message.is-visible{opacity:1;background:#1a1c18;border:1px solid #eee9df1a;border-radius:14px;max-height:148px;margin:0;padding:11px 13px 12px;transform:translateY(0)}.dialogue-message>span{color:var(--orange2);letter-spacing:.08em;margin-bottom:6px;font-family:Consolas,SFMono-Regular,monospace;font-size:9px;display:block}.dialogue-message p{color:var(--soft);margin:0;font-size:12px;line-height:1.7}.dialogue-message.learner{background:#ef6d421c;border-color:#ef6d4247;align-self:flex-end}.dialogue-message.learner>span{color:#ffc3ac}.dialogue-message.summary{background:#78b89a1a;border-color:#78b89a52;max-width:100%}.dialogue-message.summary>span{color:var(--green)}.dialogue-claim{z-index:4;text-align:center;opacity:0;pointer-events:none;background:radial-gradient(circle at 50% 42%,#78b89a33,#0d0e0cf2 62%);align-content:center;justify-items:center;padding:42px;transition:opacity .45s,transform .45s;display:grid;position:absolute;inset:61px 0 0;transform:translateY(18px)}.dialogue-claim.is-visible{opacity:1;transform:translateY(0)}.dialogue-claim span{color:var(--orange2);letter-spacing:.13em;font-family:Consolas,SFMono-Regular,monospace;font-size:10px}.dialogue-claim strong{color:var(--bone);letter-spacing:-.045em;margin-top:18px;font-family:STSong,Songti SC,serif;font-size:clamp(31px,3.3vw,46px);font-weight:600;line-height:1.36}.slogan-break{display:block}.dialogue-claim strong:after{content:"";background:linear-gradient(90deg,var(--orange),var(--green));width:62px;height:2px;margin:25px auto 0;display:block}.dialogue-progress{z-index:5;grid-template-columns:repeat(4,1fr);gap:5px;display:grid;position:absolute;bottom:18px;left:20px;right:20px}.dialogue-progress i{background:#eee9df26;height:2px;transition:background .45s}.dialogue-progress i.is-active{background:var(--green)}.engine-section{border-top:1px solid var(--line);grid-template-columns:.85fr 1.15fr;align-items:center;gap:100px;padding:150px 0;display:grid}.engine-console{border:1px solid var(--line2);background:#131410;border-radius:22px;overflow:hidden;box-shadow:0 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