:root{
  color-scheme:light;
  --bg:#f4f7f5;
  --surface:#ffffff;
  --surface-2:#eaf2f1;
  --ink:#102e3a;
  --muted:#5d7077;
  --line:#d4e0df;
  --brand:#087b8d;
  --brand-2:#16a9b8;
  --brand-dark:#073247;
  --accent:#e9a93a;
  --good:#138568;
  --warn:#c37b17;
  --bad:#b94b4b;
  --shadow:0 18px 60px rgba(12,52,67,.10);
  --radius:24px;
  --radius-sm:15px;
  --max:1240px;
}
html[data-theme="dark"]{
  color-scheme:dark;
  --bg:#061f2c;
  --surface:#0b2c3b;
  --surface-2:#103b49;
  --ink:#eff8f5;
  --muted:#b1c4c4;
  --line:#24505b;
  --brand:#3ac8d2;
  --brand-2:#63dce4;
  --brand-dark:#061f2c;
  --accent:#f0bc55;
  --good:#57d0a9;
  --warn:#f0bc55;
  --bad:#ef8b8b;
  --shadow:0 20px 70px rgba(0,0,0,.26);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;line-height:1.72;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
button{color:inherit}
img,svg{display:block;max-width:100%}
.skip-link{position:fixed;left:12px;top:-80px;z-index:9999;background:var(--accent);color:#17323d;padding:10px 16px;border-radius:10px;font-weight:800}.skip-link:focus{top:12px}
.topbar{position:sticky;top:0;z-index:1000;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:13px max(22px,calc((100vw - var(--max))/2));background:color-mix(in srgb,var(--surface) 88%,transparent);border-bottom:1px solid color-mix(in srgb,var(--line) 72%,transparent);backdrop-filter:blur(18px)}
.brand{display:flex;align-items:center;gap:11px;min-width:max-content}.brand-mark{width:42px;height:42px;display:grid;place-items:center;color:var(--brand);background:var(--surface-2);border-radius:14px}.brand-mark svg{width:27px}.brand span:last-child{display:flex;flex-direction:column;line-height:1.15}.brand strong{font-size:16px}.brand small{font-size:11px;color:var(--muted);margin-top:4px;letter-spacing:.08em;text-transform:uppercase}
.desktop-nav{display:flex;align-items:center;gap:21px;font-size:14px;font-weight:700;color:var(--muted)}.desktop-nav a{position:relative;padding:9px 0}.desktop-nav a::after{content:"";position:absolute;left:0;right:100%;bottom:2px;height:2px;background:var(--brand);transition:.25s}.desktop-nav a:hover{color:var(--ink)}.desktop-nav a:hover::after{right:0}
.top-actions{display:flex;align-items:center;gap:8px}.primary-btn,.secondary-btn,.ghost-btn{border:0;border-radius:13px;padding:11px 17px;font-weight:800;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s}.primary-btn{background:var(--brand);color:#fff;box-shadow:0 10px 22px rgba(8,123,141,.2)}.primary-btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(8,123,141,.28)}.secondary-btn{background:var(--surface-2);color:var(--ink);border:1px solid var(--line)}.secondary-btn:hover,.ghost-btn:hover{background:color-mix(in srgb,var(--surface-2) 75%,var(--brand) 9%)}.ghost-btn{background:transparent;border:1px solid var(--line);padding:9px 12px;color:var(--muted)}
.section-shell{width:min(var(--max),calc(100% - 40px));margin:0 auto;padding:92px 0}.hero{padding-top:72px;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;min-height:730px}.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--brand);font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:900}.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}.hero h1,.section-heading h2{margin:.35em 0 .45em;line-height:1.13;letter-spacing:-.04em}.hero h1{font-size:clamp(42px,5.4vw,76px);max-width:780px}.hero h1 em{font-style:normal;color:var(--brand)}.hero-lead{font-size:19px;color:var(--muted);max-width:750px}.hero blockquote{margin:26px 0;padding:16px 20px;border-left:4px solid var(--accent);background:var(--surface);border-radius:0 15px 15px 0;font-weight:800;box-shadow:var(--shadow)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}.hero-tags{display:flex;gap:9px;flex-wrap:wrap}.hero-tags span{padding:7px 11px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:12px;background:color-mix(in srgb,var(--surface) 76%,transparent)}.hero-visual{position:relative}.hero-visual::before{content:"";position:absolute;inset:8% 7%;background:radial-gradient(circle,var(--brand-2),transparent 68%);opacity:.18;filter:blur(40px)}.hero-svg{position:relative;filter:drop-shadow(0 25px 50px rgba(4,48,65,.22));animation:float 6s ease-in-out infinite}@keyframes float{50%{transform:translateY(-8px)}}
.counter-band{width:min(var(--max),calc(100% - 40px));margin:0 auto;padding:34px 38px;border-radius:var(--radius);background:var(--brand-dark);color:#f3fbf9;box-shadow:var(--shadow)}.counter-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.counter-head h2{margin:4px 0 0;font-size:26px}.counter-head .eyebrow{color:#72dde4}.counter-mode{padding:7px 12px;border:1px solid rgba(255,255,255,.22);border-radius:999px;color:#c8e8e8;font-size:12px}.counter-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px}.counter-grid article{padding:18px 20px;border-radius:16px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.09)}.counter-grid strong{font-size:34px;display:block;color:#fff}.counter-grid span{font-size:12px;color:#c6dddd}.micro-note{font-size:12px;color:var(--muted);margin:15px 0 0}.counter-band .micro-note{color:#a9c9ca}
.section-heading{max-width:760px;margin-bottom:38px}.section-heading.wide{max-width:980px}.section-heading h2{font-size:clamp(34px,4.6vw,56px)}.section-heading p{color:var(--muted);font-size:17px;margin:0}.section-heading b{color:var(--ink)}
.lesson-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}.lesson-card{grid-column:span 4;position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:0 8px 30px rgba(9,50,64,.05);transition:.25s}.lesson-card:first-child,.lesson-card:nth-child(5){grid-column:span 6}.lesson-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--brand) 45%,var(--line))}.lesson-no{font-size:12px;color:var(--brand);font-weight:900;letter-spacing:.12em}.lesson-card h3{font-size:22px;line-height:1.28;margin:10px 0}.lesson-card p{color:var(--muted);margin:0}.lesson-card footer{margin-top:18px;padding-top:15px;border-top:1px dashed var(--line);font-size:12px;color:var(--brand);font-weight:800}.lesson-card::after{content:"";position:absolute;width:110px;height:110px;border-radius:50%;right:-58px;top:-58px;background:var(--brand);opacity:.06}
.architecture-section{padding-top:110px}.architecture-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:24px;align-items:stretch}.architecture-stack{display:flex;flex-direction:column-reverse;gap:10px}.architecture-layer{position:relative;text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:16px;padding:17px 20px;cursor:pointer;transition:.23s;display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:14px}.architecture-layer b{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:var(--surface-2);color:var(--brand);font-size:18px}.architecture-layer span strong{display:block;font-size:17px}.architecture-layer span small{display:block;color:var(--muted);margin-top:3px}.architecture-layer i{font-style:normal;color:var(--muted);font-size:22px}.architecture-layer:hover,.architecture-layer.active{transform:translateX(8px);border-color:var(--brand);box-shadow:var(--shadow)}.architecture-layer.active{background:color-mix(in srgb,var(--surface) 82%,var(--brand) 7%)}.card-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.architecture-detail{padding:34px;min-height:480px}.architecture-detail .detail-kicker{font-size:12px;color:var(--brand);font-weight:900;letter-spacing:.1em}.architecture-detail h3{font-size:31px;margin:8px 0}.architecture-detail>p{color:var(--muted);font-size:17px}.detail-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}.detail-columns div{padding:18px;border-radius:15px;background:var(--surface-2)}.detail-columns h4{margin:0 0 8px}.detail-columns ul{margin:0;padding-left:18px;color:var(--muted)}.detail-rule{margin-top:20px;padding:17px;border-left:4px solid var(--accent);background:color-mix(in srgb,var(--surface-2) 80%,var(--accent) 6%);font-weight:800;border-radius:0 14px 14px 0}.loop-strip{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:26px;padding:18px;border-radius:18px;background:var(--brand-dark);color:#fff}.loop-strip span{padding:8px 13px;background:rgba(255,255,255,.09);border-radius:999px;font-weight:800}.loop-strip b{color:var(--accent)}
.maturity-section{overflow:hidden}.maturity-ladder{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;align-items:end;margin:35px 0 24px}.maturity-step{min-height:170px;border:1px solid var(--line);background:var(--surface);border-radius:18px 18px 8px 8px;padding:16px 12px;text-align:left;cursor:pointer;transition:.22s;position:relative}.maturity-step:nth-child(1){min-height:120px}.maturity-step:nth-child(2){min-height:145px}.maturity-step:nth-child(3){min-height:170px}.maturity-step:nth-child(4){min-height:195px}.maturity-step:nth-child(5){min-height:220px}.maturity-step:nth-child(6){min-height:245px}.maturity-step:nth-child(7){min-height:270px}.maturity-step b{font-size:12px;color:var(--brand)}.maturity-step strong{display:block;margin-top:9px;font-size:16px}.maturity-step span{font-size:12px;color:var(--muted);display:block;margin-top:8px}.maturity-step:hover,.maturity-step.active{border-color:var(--brand);background:color-mix(in srgb,var(--surface) 86%,var(--brand) 8%);transform:translateY(-5px)}.maturity-detail{padding:25px 28px;border-radius:18px;background:var(--surface-2);border:1px solid var(--line)}.maturity-detail h3{margin:0 0 7px}.maturity-detail p{margin:0;color:var(--muted)}.maturity-detail .maturity-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.maturity-tags span{padding:6px 10px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:12px}
.filter-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:25px}.filter-btn{border:1px solid var(--line);background:var(--surface);padding:9px 14px;border-radius:999px;cursor:pointer;font-weight:800;color:var(--muted)}.filter-btn.active,.filter-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff}.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.scenario-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:23px;display:grid;grid-template-columns:1fr auto;gap:20px;transition:.2s}.scenario-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}.scenario-card h3{margin:6px 0 10px}.scenario-card p{margin:0;color:var(--muted)}.scenario-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:16px}.scenario-meta span{font-size:11px;padding:5px 8px;border-radius:999px;background:var(--surface-2)}.risk-badge{align-self:start;min-width:85px;text-align:center;border-radius:14px;padding:8px 10px;font-size:12px;font-weight:900}.risk-low{background:color-mix(in srgb,var(--good) 14%,var(--surface));color:var(--good)}.risk-mid{background:color-mix(in srgb,var(--warn) 14%,var(--surface));color:var(--warn)}.risk-high{background:color-mix(in srgb,var(--bad) 14%,var(--surface));color:var(--bad)}
.firewall-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.firewall-card{padding:23px;border-radius:20px;border:1px solid var(--line);background:var(--surface);position:relative;overflow:hidden}.firewall-card .icon{width:46px;height:46px;display:grid;place-items:center;border-radius:14px;background:var(--surface-2);color:var(--brand);font-weight:900}.firewall-card h3{margin:15px 0 7px}.firewall-card p{margin:0;color:var(--muted)}.firewall-card small{display:block;margin-top:14px;color:var(--brand);font-weight:800}.redline-box{margin-top:24px;padding:28px;border-radius:var(--radius);background:var(--brand-dark);color:#eef8f6}.redline-box h3{font-size:25px;margin:0 0 14px;color:#fff}.redline-box ol{margin:0;padding-left:22px}.redline-box li+li{margin-top:12px}.redline-box b{color:#f3c66d}
.people-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.people-grid article{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px}.people-grid article>span{width:44px;height:44px;display:grid;place-items:center;border-radius:50%;background:var(--brand);color:#fff;font-weight:900}.people-grid h3{margin:14px 0 5px}.people-grid b{font-size:13px;color:var(--brand)}.people-grid p{color:var(--muted);font-size:14px}
.roadmap-tabs,.sandbox-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.roadmap-tab,.sandbox-tab{border:1px solid var(--line);background:var(--surface);padding:11px 16px;border-radius:12px;cursor:pointer;font-weight:900;color:var(--muted)}.roadmap-tab.active,.sandbox-tab.active{background:var(--brand);color:#fff;border-color:var(--brand)}.roadmap-content{min-height:370px}.roadmap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.phase-card{padding:25px;border-radius:20px;background:var(--surface);border:1px solid var(--line)}.phase-card .phase-no{font-size:12px;color:var(--brand);font-weight:900}.phase-card h3{margin:9px 0}.phase-card ul{padding-left:18px;color:var(--muted)}.phase-card footer{margin-top:16px;padding-top:13px;border-top:1px dashed var(--line);font-size:12px;color:var(--brand);font-weight:800}.raci-table,.accept-table{width:100%;border-collapse:separate;border-spacing:0;background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden}.raci-table th,.raci-table td,.accept-table th,.accept-table td{padding:14px 15px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.raci-table th,.accept-table th{background:var(--surface-2);font-size:13px}.raci-table tr:last-child td,.accept-table tr:last-child td{border-bottom:0}.raci-table td,.accept-table td{color:var(--muted)}
.prompt-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.prompt-card{background:var(--surface);border:1px solid var(--line);border-radius:22px;overflow:hidden}.prompt-card header{display:flex;gap:13px;padding:20px 22px;border-bottom:1px solid var(--line);align-items:flex-start}.prompt-index{width:38px;height:38px;display:grid;place-items:center;border-radius:11px;background:var(--brand);color:#fff;font-size:12px;font-weight:900;flex:0 0 auto}.prompt-card h3{margin:0}.prompt-card header p{margin:3px 0 0;color:var(--muted);font-size:13px}.prompt-text{white-space:pre-wrap;font-family:inherit;font-size:13px;line-height:1.65;color:var(--muted);max-height:240px;overflow:auto;margin:0;padding:20px 22px;background:color-mix(in srgb,var(--surface) 75%,var(--surface-2))}.prompt-card button{margin:16px 22px 20px}
.sandbox-panel{padding:27px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.sandbox-panel:not(.active){display:none}.sandbox-intro h3{font-size:26px;margin:0}.sandbox-intro p{color:var(--muted);margin:6px 0 22px}.preset-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}.preset-btn{border:1px solid var(--line);background:var(--surface-2);padding:8px 12px;border-radius:999px;cursor:pointer;font-weight:800;font-size:12px}.preset-btn.active,.preset-btn:hover{background:var(--accent);border-color:var(--accent);color:#17323d}.score-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:22px}.slider-form{display:grid;grid-template-columns:1fr 1fr;gap:14px}.slider-form label{background:var(--surface-2);border-radius:14px;padding:12px 14px;font-size:13px;font-weight:800}.slider-form output{float:right;color:var(--brand);font-size:18px}.slider-form input{width:100%;accent-color:var(--brand);margin-top:9px}.score-card{padding:28px;border-radius:20px;background:var(--brand-dark);color:#eff8f5;min-height:315px}.score-card .score-number{font-size:72px;line-height:1;font-weight:900;color:#fff}.score-card .score-tier{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.1);margin:10px 0 15px;color:#f3c66d;font-weight:900}.score-card p{color:#c7dddd}.score-bars{display:grid;gap:9px;margin-top:19px}.score-bar label{display:flex;justify-content:space-between;font-size:12px}.bar-track{height:8px;background:rgba(255,255,255,.1);border-radius:999px;overflow:hidden}.bar-fill{height:100%;background:#55d0d8;border-radius:999px}.decision-options,.control-choices{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.decision-choice,.control-choice{display:flex;align-items:flex-start;gap:12px;padding:17px;border:1px solid var(--line);background:var(--surface-2);border-radius:16px;cursor:pointer}.decision-choice input{margin-top:6px;accent-color:var(--brand)}.decision-choice b,.control-choice b{display:block}.decision-choice small,.control-choice small{color:var(--muted)}.control-choice{cursor:pointer;text-align:left}.control-choice:hover,.control-choice.selected{border-color:var(--brand);background:color-mix(in srgb,var(--surface-2) 80%,var(--brand) 8%)}.evaluate-btn{margin-top:18px}.sandbox-result{margin-top:20px;padding:22px;border-radius:17px;background:var(--surface-2);border:1px solid var(--line)}.sandbox-result:empty{display:none}.sandbox-result h4{margin:0 0 8px}.sandbox-result ul{margin:8px 0;padding-left:20px;color:var(--muted)}.grade-good{color:var(--good)}.grade-warn{color:var(--warn)}.grade-bad{color:var(--bad)}
.notes-section textarea{width:100%;resize:vertical;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:18px;padding:18px;outline:none;box-shadow:inset 0 1px 0 rgba(255,255,255,.05)}.notes-section textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 14%,transparent)}.note-actions{display:flex;align-items:center;gap:10px;margin-top:13px}.note-actions span{color:var(--muted);font-size:12px}
.evidence-pyramid{display:flex;flex-direction:column;align-items:center;gap:8px;margin:35px auto;max-width:860px}.evidence-pyramid div{display:flex;align-items:center;justify-content:center;gap:12px;height:60px;border-radius:14px;background:var(--surface);border:1px solid var(--line);box-shadow:0 8px 22px rgba(10,52,67,.04)}.evidence-pyramid div:nth-child(1){width:46%}.evidence-pyramid div:nth-child(2){width:62%}.evidence-pyramid div:nth-child(3){width:78%}.evidence-pyramid div:nth-child(4){width:94%;background:color-mix(in srgb,var(--surface) 83%,var(--accent) 8%)}.evidence-pyramid b{width:32px;height:32px;display:grid;place-items:center;border-radius:50%;background:var(--brand);color:#fff}.evidence-rule{max-width:920px;margin:0 auto 28px;text-align:center;padding:16px;border-radius:15px;background:var(--surface-2)}.source-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.source-item{display:flex;gap:13px;padding:18px;border:1px solid var(--line);background:var(--surface);border-radius:16px}.source-item b{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;background:var(--surface-2);color:var(--brand);flex:0 0 auto}.source-item h3{font-size:15px;margin:0}.source-item p{font-size:12px;color:var(--muted);margin:4px 0 8px}.source-item a{font-size:12px;color:var(--brand);font-weight:900}.source-item a:hover{text-decoration:underline}
footer{padding:45px max(22px,calc((100vw - var(--max))/2));background:var(--brand-dark);color:#e9f6f3;display:grid;grid-template-columns:1fr auto;gap:20px;align-items:start}footer strong{font-size:18px}footer p{margin:6px 0;color:#a9c7c9}.footer-links{display:flex;gap:16px;font-weight:800;font-size:13px}.footer-links a:hover{color:var(--accent)}.disclaimer{grid-column:1/-1;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:12px}
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