:root {
  --ink:#071a2d;
  --ink-2:#102c49;
  --paper:#f5f1e7;
  --paper-2:#ebe5d8;
  --white:#fffdf7;
  --blue:#124ee8;
  --blue-soft:#e9efff;
  --orange:#ff5a1f;
  --orange-soft:#fff0e9;
  --green:#0d9b6c;
  --green-soft:#e8f8f1;
  --muted:#617083;
  --line:rgba(7,26,45,.16);
  --shadow:0 24px 70px rgba(2,16,31,.12);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei UI","PingFang SC","Noto Sans CJK SC",sans-serif;line-height:1.65}
button,a{font:inherit}
button{color:inherit}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.paper-grain{position:fixed;inset:0;pointer-events:none;z-index:100;opacity:.2;background-image:radial-gradient(rgba(7,26,45,.22) .45px,transparent .65px);background-size:5px 5px;mix-blend-mode:multiply}
.section-shell{width:min(1320px,calc(100% - 48px));margin-inline:auto}
.site-header{height:76px;padding:0 max(24px,calc((100vw - 1320px)/2));display:flex;align-items:center;gap:30px;border-bottom:1px solid var(--line);background:rgba(245,241,231,.94);backdrop-filter:blur(16px);position:sticky;top:0;z-index:50}
.brand{display:flex;align-items:center;gap:11px;margin-right:auto}
.brand img{width:42px;height:42px;border:1px solid var(--line);border-radius:9px}
.brand span{display:flex;flex-direction:column;line-height:1.2}.brand b{font-size:15px}.brand small{font:10px/1.2 Consolas,monospace;letter-spacing:.11em;color:var(--muted);margin-top:4px}
.site-header nav{display:flex;gap:26px;font-size:13px;font-weight:700}.site-header nav a{position:relative}.site-header nav a:after{content:"";height:2px;position:absolute;left:0;right:100%;bottom:-7px;background:var(--orange);transition:right .2s}.site-header nav a:hover:after{right:0}
.author-chip{font:700 11px Consolas,monospace;border:1px solid var(--line);padding:6px 10px;border-radius:99px}
.hero{min-height:760px;padding:100px 0 60px;display:grid;grid-template-columns:1.05fr .95fr;grid-template-rows:1fr auto;gap:60px;align-items:center}
.eyebrow{font:700 11px/1.3 Consolas,"Microsoft YaHei UI",sans-serif;letter-spacing:.17em;text-transform:uppercase;display:flex;align-items:center;gap:10px;margin:0 0 22px}.eyebrow span{display:inline-block;width:30px;height:2px;background:var(--orange)}
.hero h1,.section-heading h2,.final-callout blockquote{font-family:"Songti SC","STSong","SimSun",serif;letter-spacing:-.045em}
.hero h1{font-size:clamp(48px,6vw,82px);line-height:1.06;margin:0;max-width:800px;font-weight:900}.hero h1 em{font-style:normal;color:var(--blue)}
.hero-lead{font-size:18px;max-width:690px;color:#415368;margin:28px 0 34px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border:1px solid transparent;font-size:13px;font-weight:800;letter-spacing:.02em;transition:transform .2s,box-shadow .2s}.button:hover{transform:translateY(-2px)}.button.primary{background:var(--ink);color:#fff;box-shadow:8px 8px 0 var(--orange)}.button.ghost{border-color:var(--line);background:transparent}.button.light{background:var(--white);color:var(--ink)}
.privacy-line{display:flex;align-items:center;gap:8px;margin-top:34px;color:var(--muted);font-size:12px}.privacy-dot,.live-dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(13,155,108,.12)}
.hero-visual{position:relative;min-height:430px;display:grid;place-items:center}.mark-frame{width:min(430px,80%);aspect-ratio:1;background:var(--white);border:1px solid var(--line);box-shadow:24px 24px 0 var(--blue);transform:rotate(2deg);overflow:hidden}.mark-frame img{width:100%;height:100%;object-fit:cover;transform:rotate(-2deg) scale(1.05)}
.signal-line{position:absolute;height:3px;background:var(--orange);z-index:-1}.signal-line.left{width:22%;left:0;top:48%}.signal-line.right{width:22%;right:0;top:56%;background:var(--blue)}
.orbit-tag{position:absolute;background:var(--ink);color:#fff;padding:7px 11px;font-size:11px;font-weight:800;box-shadow:5px 5px 0 var(--orange)}.tag-a{left:2%;top:16%}.tag-b{right:0;bottom:23%}.tag-c{left:9%;bottom:4%;background:var(--blue)}
.hero-metrics{grid-column:1/-1;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr)}.hero-metrics article{padding:26px 30px;border-right:1px solid var(--line);display:flex;align-items:baseline;gap:16px}.hero-metrics article:last-child{border:0}.hero-metrics strong{font:800 42px/1 Consolas,monospace}.hero-metrics strong small{font-size:15px}.hero-metrics span{font-size:13px;color:var(--muted)}
.statement-band{background:var(--orange);color:var(--ink);min-height:92px;padding:24px;display:flex;align-items:center;justify-content:center;gap:30px;font:800 clamp(18px,2vw,28px)/1.2 "Songti SC",serif}.statement-band span{font-family:Consolas}.statement-band .accent{background:var(--ink);color:#fff;padding:8px 14px}
.story,.rules,.proof,.stack{padding:120px 0}
.section-heading{max-width:850px;margin-bottom:60px}.section-heading h2{font-size:clamp(38px,5vw,64px);line-height:1.08;margin:0}.section-heading>p:last-child{color:var(--muted);font-size:16px;max-width:700px;margin-top:20px}.section-heading.inverse{color:#fff}.section-heading.inverse>p:last-child{color:#9fb1c6}.section-heading.compact{margin-bottom:36px}
.flow-track{display:grid;grid-template-columns:1fr 36px 1fr 36px 1fr 36px 1fr 36px 1fr;align-items:stretch}.flow-track article{min-height:250px;background:var(--white);border:1px solid var(--line);padding:25px;position:relative;transition:transform .25s,box-shadow .25s}.flow-track article:hover{transform:translateY(-7px);box-shadow:var(--shadow)}.flow-track article b{font:700 11px Consolas;color:var(--orange)}.flow-icon{display:block;font:700 32px Consolas;margin:33px 0 22px;color:var(--blue)}.flow-track h3{margin:0 0 8px;font-size:18px}.flow-track p{margin:0;color:var(--muted);font-size:13px}.flow-track>i{align-self:center;height:1px;background:var(--orange);position:relative}.flow-track>i:after{content:"";position:absolute;right:0;top:-3px;width:7px;height:7px;border-top:1px solid var(--orange);border-right:1px solid var(--orange);transform:rotate(45deg)}
.demo-section{padding:110px 0;background:var(--ink);color:var(--ink)}
.demo-toolbar{height:64px;background:#fff;display:flex;align-items:center;padding:0 20px;border-bottom:1px solid var(--line);border-radius:12px 12px 0 0}.demo-toolbar>div:first-child{display:flex;align-items:center;gap:10px}.demo-toolbar small{color:var(--muted);margin-left:7px}.demo-actions{margin-left:auto;display:flex;gap:8px}.toolbar-button{border:1px solid #efb67e;background:#fff6ea;color:#9b510d;padding:7px 12px;border-radius:6px;font-weight:800;font-size:12px;cursor:pointer}.toolbar-button:hover{background:#ffecd6}.toolbar-button.quiet{border-color:var(--line);background:#f4f6f8;color:var(--muted)}
.demo-stats{height:54px;background:#f3f5f7;display:flex;align-items:center;gap:24px;padding:0 20px;border-bottom:1px solid var(--line);font-size:12px}.demo-stats b{font:800 17px Consolas;color:var(--blue);margin-left:5px}.demo-badge{margin-left:auto;font:700 10px Consolas;letter-spacing:.12em;background:var(--ink);color:#fff;padding:5px 8px}
.agent-board{display:grid;grid-template-columns:.82fr 1.45fr .9fr;min-height:650px;background:#edf0f3;border-radius:0 0 12px 12px;overflow:hidden;box-shadow:0 30px 90px rgba(0,0,0,.25)}
.incident-list,.evidence-pane,.handling-pane{min-width:0;background:#f5f6f8}.incident-list{border-right:1px solid var(--line);padding:18px}.pane-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:14px}.pane-title b{font-size:13px}.pane-title small{font-size:10px;color:var(--muted)}
.incident-card{width:100%;border:1px solid var(--line);border-left:4px solid var(--orange);background:#fff;text-align:left;padding:14px;margin-bottom:8px;border-radius:8px;cursor:pointer;transition:border-color .15s,transform .15s}.incident-card:hover{transform:translateX(3px)}.incident-card.active{border-color:var(--blue);box-shadow:0 4px 16px rgba(18,78,232,.12)}.incident-card.merged{display:none}.incident-card .card-tags{display:flex;gap:5px;align-items:center;margin-bottom:9px}.tiny-pill{font-size:10px;padding:2px 6px;border-radius:4px;background:var(--orange-soft);color:#c6410f;font-weight:800}.tiny-pill.blue{background:var(--blue-soft);color:var(--blue)}.incident-card h4{font-size:14px;margin:0 0 5px}.incident-card p{font-size:11px;color:var(--orange);margin:0}.incident-card small{color:var(--muted);font-size:10px}
.evidence-pane{background:#fff;border-right:1px solid var(--line)}.detail-head{height:106px;padding:19px 22px;display:flex;justify-content:space-between;align-items:start;border-bottom:1px solid var(--line)}.detail-head h3{margin:4px 0 2px;font-size:20px}.detail-head p{margin:0;color:var(--muted);font-size:11px}.micro-label{font:700 9px Consolas;letter-spacing:.13em;color:var(--blue)}.status-pill{font-size:11px;font-weight:800;padding:4px 8px;border-radius:4px}.status-pill.pending{background:var(--orange-soft);color:#c6410f}.status-pill.repair{background:#fff0d9;color:#a65b00}.status-pill.retest{background:var(--blue-soft);color:var(--blue)}.status-pill.resolved{background:var(--green-soft);color:var(--green)}
.tab-row{display:flex;gap:7px;padding:16px 20px 0}.tab-row button{border:1px solid var(--line);background:#fff;border-radius:5px;padding:6px 10px;font-size:11px;cursor:pointer}.tab-row button.active{background:var(--ink);color:#fff}.tab-content{display:none;padding:16px 22px 24px}.tab-content.active{display:block}.content-label{font-size:12px;font-weight:800;border-left:3px solid var(--blue);padding-left:8px}.fact-card,.ai-card,.experience-card{border:1px solid var(--line);border-radius:8px;padding:16px;background:#f7f8fa}.fact-card small{display:block;color:var(--muted);margin-bottom:7px}.fact-card b{font-size:14px}.fact-card p,.ai-card p,.experience-card p{font-size:12px;color:#506176;margin:8px 0 0}.merged-evidence{margin-top:10px;background:#fff6e9;border:1px solid #efb67e;border-radius:7px;padding:11px;font-size:11px;color:#9b510d}.experience-card{border-color:#b8c9f7;background:#f2f6ff}.experience-card>div{display:flex;justify-content:space-between}.experience-card>div span,.experience-card>div b{font-size:10px;color:var(--blue)}.experience-card h4{font-size:14px;margin:12px 0}.experience-card small{display:block;margin-top:12px;color:var(--muted)}.ai-card{background:#f4f1ff;border-color:#d5c9fa}.ai-card>b{color:#4d2db7}.ai-card>div{display:flex;gap:6px;margin-top:14px;flex-wrap:wrap}.ai-card span{font-size:9px;padding:4px 6px;background:#fff;border:1px solid #ddd2ff}.fake-screen{height:300px;border:1px solid var(--line);background:#e9edf1;position:relative;overflow:hidden}.browser-bar{height:26px;background:var(--ink);display:flex;align-items:center;gap:5px;padding:0 9px}.browser-bar i{width:6px;height:6px;border-radius:50%;background:#fff}.fake-table{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:25px}.fake-table span{height:52px;background:#fff;border:1px solid #d2d8df}.fake-dialog{position:absolute;width:210px;left:50%;top:50%;transform:translate(-50%,-43%);padding:15px;background:#fff;box-shadow:0 15px 40px rgba(7,26,45,.2)}.fake-dialog b{font-size:12px}.fake-dialog p{font-size:10px;color:var(--muted)}.fake-dialog em{font:700 18px Consolas;color:var(--orange)}
.handling-pane{background:#fffaf1}.handling-head{height:74px;padding:17px 20px;border-bottom:1px solid var(--line);display:flex;flex-direction:column}.handling-head span{font-weight:800}.handling-head small{font:10px Consolas;color:var(--muted)}.stage-line{list-style:none;display:flex;padding:14px 20px;margin:0;gap:4px}.stage-line li{flex:1;text-align:center;background:#e8ebef;color:#9aa4b0;font-size:10px;padding:4px;border-radius:3px}.stage-line li.active{background:var(--orange-soft);color:#c6410f;font-weight:800}.stage-line li.done{background:var(--green-soft);color:var(--green)}#handlingContent{padding:10px 20px 24px}.handling-copy h4{font-size:15px;margin:0 0 5px}.handling-copy>p{font-size:11px;color:var(--muted);margin:0 0 14px}.handling-copy label{font-size:11px;font-weight:800;display:block;margin:12px 0 6px}.handling-copy textarea{width:100%;min-height:105px;resize:vertical;border:1px solid var(--line);background:#fff;padding:10px;font:12px/1.6 inherit;border-radius:6px}.handling-copy textarea:focus{outline:2px solid rgba(18,78,232,.2);border-color:var(--blue)}.step-button{border:0;background:var(--green);color:#fff;padding:9px 13px;border-radius:6px;font-size:11px;font-weight:800;margin-top:12px;cursor:pointer}.step-button:hover{filter:brightness(.93)}.saved-note{background:var(--green-soft);border:1px solid #9fd8c4;padding:10px;border-radius:6px;font-size:11px;margin-bottom:11px}.resolved-graphic{display:grid;place-items:center;text-align:center;padding:35px 0}.resolved-check{width:70px;height:70px;border-radius:50%;border:3px solid var(--green);color:var(--green);display:grid;place-items:center;font:bold 34px Consolas;margin-bottom:18px}.resolved-graphic h4{margin:0}.resolved-graphic p{font-size:11px;color:var(--muted)}
.demo-footnote{text-align:right;color:#8ca0b5;font-size:10px;margin:14px 0 0}
.rules-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.rules-grid article{min-height:210px;padding:28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,253,247,.4)}.rules-grid span{font:700 11px Consolas;color:var(--orange)}.rules-grid h3{font:800 18px/1.3 "Songti SC",serif;margin:26px 0 10px}.rules-grid p{font-size:13px;color:var(--muted);margin:0}
.boundary-section{background:#0c243c;padding:110px 0;color:#fff}.boundary-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.boundary-grid>div{padding:36px;border:1px solid rgba(255,255,255,.16)}.boundary-grid h3{font-size:22px;margin:0 0 26px}.boundary-grid h3 span{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;margin-right:8px}.can-do h3 span{background:var(--green)}.cannot-do h3 span{background:var(--orange)}.boundary-grid ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:12px}.boundary-grid li{font-size:13px;padding:12px;background:rgba(255,255,255,.055);border-left:2px solid rgba(255,255,255,.3)}.public-safety{margin-top:16px;padding:20px;border:1px solid rgba(255,255,255,.16);display:flex;gap:9px;align-items:center;flex-wrap:wrap}.public-safety b{margin-right:auto}.public-safety span{font:10px Consolas;background:#fff;color:var(--ink);padding:5px 8px}
.proof-grid{display:grid;grid-template-columns:1fr 1fr .58fr;gap:15px;align-items:stretch}.proof-card{padding:0;text-align:left;border:1px solid var(--line);background:var(--white);cursor:zoom-in;overflow:hidden;transition:transform .2s,box-shadow .2s}.proof-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.proof-card img{width:100%;height:330px;object-fit:cover;object-position:top}.proof-card.portrait img{object-fit:cover;object-position:top}.proof-card span{display:flex;flex-direction:column;padding:16px}.proof-card b{font-size:13px}.proof-card small{font-size:10px;color:var(--muted);margin-top:4px}
.stack-list{border-top:1px solid var(--line)}.stack-list article{display:grid;grid-template-columns:70px 210px 1fr;align-items:center;min-height:95px;border-bottom:1px solid var(--line);transition:padding .2s,background .2s}.stack-list article:hover{padding-left:12px;background:rgba(255,255,255,.35)}.stack-list b{font:700 11px Consolas;color:var(--orange)}.stack-list h3{font-size:18px}.stack-list p{font-size:13px;color:var(--muted)}
.final-callout{background:var(--orange);padding:100px 0}.final-callout blockquote{font-size:clamp(38px,6vw,76px);line-height:1.05;margin:25px 0;max-width:1100px;font-weight:900}.final-callout p{font-size:13px}.final-callout .button{margin-top:20px}
footer{background:#061421;color:#fff;padding:40px max(24px,calc((100vw - 1320px)/2));display:grid;grid-template-columns:1fr 1.5fr auto;align-items:center;gap:30px}footer>div{display:flex;align-items:center;gap:10px}footer img{width:38px;height:38px;border-radius:6px}footer span{display:flex;flex-direction:column}footer small,footer p,footer a{font-size:10px;color:#8ea1b5}footer a{color:#fff;font-weight:800}
dialog{width:min(1400px,94vw);height:min(900px,92vh);padding:0;border:0;background:#071a2d;box-shadow:0 30px 100px rgba(0,0,0,.5)}dialog::backdrop{background:rgba(1,10,20,.85);backdrop-filter:blur(4px)}dialog img{width:100%;height:100%;object-fit:contain}dialog button{position:absolute;right:14px;top:12px;width:38px;height:38px;border:0;border-radius:50%;background:#fff;color:var(--ink);font-size:25px;cursor:pointer}
#toast{position:fixed;z-index:90;left:50%;bottom:30px;transform:translate(-50%,20px);background:#fff;color:var(--ink);padding:11px 16px;border-left:4px solid var(--orange);box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s;font-size:12px;font-weight:700}#toast.show{opacity:1;transform:translate(-50%,0)}
.reveal{animation:rise .7s both}.delay-1{animation-delay:.14s}.delay-2{animation-delay:.28s}@keyframes rise{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
@media (max-width:1100px){.hero{grid-template-columns:1fr;padding-top:70px}.hero-visual{min-height:360px}.hero-metrics{grid-column:auto}.flow-track{grid-template-columns:repeat(5,1fr);gap:8px}.flow-track>i{display:none}.agent-board{grid-template-columns:1fr 1.35fr}.handling-pane{grid-column:1/-1;min-height:390px}.proof-grid{grid-template-columns:1fr 1fr}.proof-card.portrait{grid-column:1/-1}.proof-card.portrait img{height:360px}.rules-grid{grid-template-columns:1fr 1fr}}
@media (max-width:760px){.section-shell{width:min(100% - 28px,1320px)}.site-header{height:66px;padding:0 14px}.site-header nav{display:none}.author-chip{display:none}.brand img{width:36px;height:36px}.hero{padding:60px 0 40px;gap:35px}.hero h1{font-size:45px}.hero-lead{font-size:15px}.hero-visual{min-height:310px}.hero-metrics{grid-template-columns:1fr}.hero-metrics article{border-right:0;border-bottom:1px solid var(--line);padding:18px 0}.statement-band{flex-direction:column;gap:8px;text-align:center}.statement-band>span{display:none}.story,.rules,.proof,.stack{padding:80px 0}.section-heading{margin-bottom:40px}.section-heading h2{font-size:38px}.flow-track{grid-template-columns:1fr;gap:8px}.flow-track article{min-height:auto}.demo-section,.boundary-section{padding:80px 0}.demo-toolbar{height:auto;padding:14px;align-items:start;gap:12px}.demo-actions{flex-direction:column}.demo-stats{height:auto;min-height:54px;gap:10px;flex-wrap:wrap;padding:10px 14px}.agent-board{display:block}.incident-list{max-height:330px;overflow:auto}.evidence-pane{min-height:540px}.handling-pane{min-height:420px}.rules-grid,.boundary-grid,.proof-grid{grid-template-columns:1fr}.boundary-grid ul{grid-template-columns:1fr}.proof-card.portrait{grid-column:auto}.proof-card img,.proof-card.portrait img{height:260px}.stack-list article{grid-template-columns:45px 1fr;padding:14px 0}.stack-list p{grid-column:2}.final-callout{padding:70px 0}.final-callout blockquote{font-size:42px}footer{grid-template-columns:1fr;padding:35px 20px}footer p{max-width:500px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{animation:none}.proof-card,.flow-track article,.button{transition:none}}