:root{color:#1d1d1f;background:#f5f5f7;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--bg: #f5f5f7;--surface: rgb(255 255 255 / 82%);--surface-solid: #ffffff;--surface-soft: #fbfbfd;--ink: #1d1d1f;--muted: #6e6e73;--muted-strong: #515154;--line: #d9d9df;--line-soft: #ececf1;--blue: #0071e3;--blue-deep: #0057b8;--blue-soft: #edf6ff;--cyan: #00a7d8;--green: #2d7d66;--green-soft: #edf8f3;--amber: #a45f00;--amber-soft: #fff7e7;--code: #111827;--code-line: #263244;--shadow: 0 34px 90px rgb(29 29 31 / 11%);--shadow-soft: 0 16px 44px rgb(29 29 31 / 7%);--shadow-crisp: 0 1px 0 rgb(255 255 255 / 90%) inset, 0 28px 70px rgb(29 29 31 / 10%)}@keyframes lab-grid-drift{0%{background-position:0 0,0 0}to{background-position:42px 42px,42px 42px}}@keyframes hero-sheen{0%{transform:translate(-120%) skew(-18deg);opacity:0}28%{opacity:.7}60%,to{transform:translate(160%) skew(-18deg);opacity:0}}@keyframes pipeline-flow{to{stroke-dashoffset:-260}}@keyframes preview-scan{0%{transform:translateY(-120%);opacity:0}22%{opacity:.55}70%,to{transform:translateY(540%);opacity:0}}@keyframes node-glow{0%,to{box-shadow:0 0 #77b7ff00}50%{box-shadow:0 0 32px #77b7ff5c}}@keyframes visual-float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes draw-streak{to{stroke-dashoffset:0}}@keyframes soft-pulse{0%,to{opacity:.7;transform:scale(1)}50%{opacity:1;transform:scale(1.05)}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}button{cursor:pointer}a{color:inherit}.home-shell{position:relative;isolation:isolate;min-height:100svh;overflow:hidden;background:url(/landing-bg.png) center / cover no-repeat,#f7fbff}.home-overlay{position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(90deg,#ffffffd1,#ffffff94 22%,#fff0 49%),linear-gradient(180deg,#fff3,#fff0 45%,#e2fff42e)}.home-copy{display:flex;width:min(650px,52vw);min-height:100svh;flex-direction:column;justify-content:center;align-items:flex-start;padding:clamp(30px,5.8vw,88px);color:#15171a}.home-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:38px;color:#1d1d1f}.home-brand span{display:grid;width:40px;height:40px;place-items:center;border:1px solid rgb(210 228 239 / 88%);border-radius:10px;background:#ffffffad;color:var(--blue);box-shadow:0 14px 34px #0071e31f,inset 0 1px #ffffffeb;-webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%)}.home-brand strong{font-size:.9rem;font-weight:790;letter-spacing:0}.home-kicker{margin:0 0 12px;color:#0057b8e0;font-size:.86rem;font-weight:760}.home-copy h1{max-width:none;margin:0;color:#161719;font-size:clamp(2.95rem,4.25vw,5rem);font-weight:740;line-height:1.05;letter-spacing:0;white-space:nowrap}.home-subtitle{display:grid;max-width:none;gap:7px;margin:24px 0 0;color:#2c2f36c7;font-size:clamp(1rem,1.02vw,1.12rem);line-height:1.68}.home-subtitle span{white-space:nowrap}.home-module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;width:min(100%,440px);margin-top:34px}.module-card{display:grid;grid-template-columns:34px minmax(0,1fr) auto;min-height:58px;align-items:center;gap:10px;padding:10px 12px;border:1px solid rgb(212 226 235 / 86%);border-radius:14px;background:#ffffff94;color:#1d1d1f;text-align:left;box-shadow:0 16px 38px #2d6f8217,inset 0 1px #ffffffeb;-webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);transition:transform .17s ease,box-shadow .17s ease,background .17s ease,border-color .17s ease}.module-card.ready{border-color:#8ec5f8d1;background:linear-gradient(135deg,#ffffffeb,#effbf9bd),#fff;color:#1d1d1f;box-shadow:0 22px 46px #0071e31f,inset 0 1px #fffffff5}.module-card:hover{transform:translateY(-2px);background:#ffffffc7;box-shadow:0 22px 46px #2d6f8221,inset 0 1px #fffffff5}.module-card.ready:hover{border-color:#5db1eee0;background:linear-gradient(135deg,#fffffffa,#e8f9f7d6),#fff;box-shadow:0 28px 56px #0071e329,inset 0 1px #fffffffa}.module-icon{display:grid;width:34px;height:34px;place-items:center;border-radius:999px;background:#edf6ffc7;color:var(--blue-deep)}.module-card.ready .module-icon{background:linear-gradient(135deg,#e1f4ffeb,#def9f4e0),#eef8ff;color:var(--blue-deep)}.module-copy{display:grid;min-width:0;gap:3px}.module-copy strong,.module-copy small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.module-copy strong{font-size:.9rem;font-weight:760}.module-copy small{color:var(--muted);font-size:.75rem;font-weight:690}.module-card.ready .module-copy small{color:var(--muted)}.module-card>svg{color:currentColor}.coming-soon{min-height:34px;margin-top:14px;padding:7px 12px;border:1px solid rgb(0 113 227 / 18%);border-radius:999px;background:#edf6ffb3;color:var(--blue-deep);font-size:.82rem;font-weight:700;opacity:0;transform:translateY(6px);transition:opacity .16s ease,transform .16s ease;-webkit-backdrop-filter:blur(14px) saturate(130%);backdrop-filter:blur(14px) saturate(130%)}.coming-soon.show{opacity:1;transform:translateY(0)}.app-shell{position:relative;isolation:isolate;min-height:100vh;background:linear-gradient(180deg,#fff 0,#fafbff 280px,#f3f4f8),var(--bg)}.app-shell:before{position:fixed;inset:0;z-index:-1;pointer-events:none;content:"";background-image:linear-gradient(rgb(18 24 38 / 4%) 1px,transparent 1px),linear-gradient(90deg,rgb(18 24 38 / 4%) 1px,transparent 1px);background-size:42px 42px;-webkit-mask-image:linear-gradient(180deg,rgb(0 0 0 / 80%),transparent 620px);mask-image:linear-gradient(180deg,rgb(0 0 0 / 80%),transparent 620px);animation:lab-grid-drift 28s linear infinite}.agent-shell{position:relative;isolation:isolate;min-height:100vh;background:linear-gradient(180deg,#fff 0,#f7fbff 360px,#f3f5f9),var(--bg)}.agent-shell:before{position:fixed;inset:0;z-index:-1;pointer-events:none;content:"";background-image:linear-gradient(rgb(18 24 38 / 3.5%) 1px,transparent 1px),linear-gradient(90deg,rgb(18 24 38 / 3.5%) 1px,transparent 1px);background-size:44px 44px;-webkit-mask-image:linear-gradient(180deg,rgb(0 0 0 / 70%),transparent 780px);mask-image:linear-gradient(180deg,rgb(0 0 0 / 70%),transparent 780px)}.agent-nav{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:center;padding:16px clamp(18px,3.8vw,56px);border-bottom:1px solid rgb(210 210 215 / 66%);background:#fafafcbd;-webkit-backdrop-filter:blur(28px) saturate(140%);backdrop-filter:blur(28px) saturate(140%)}.agent-nav-title{display:grid;justify-self:center;min-width:0;text-align:center}.agent-nav-title span{color:var(--blue);font-size:.7rem;font-weight:780;text-transform:uppercase}.agent-nav-title strong{overflow:hidden;color:var(--ink);font-size:.96rem;font-weight:760;text-overflow:ellipsis;white-space:nowrap}.agent-main{display:grid;gap:42px;width:min(100%,1560px);margin:0 auto;padding:42px clamp(18px,3.8vw,56px) 72px}.agent-hero{display:grid;grid-template-columns:minmax(0,.82fr) minmax(360px,1fr);gap:clamp(24px,4vw,64px);align-items:center;min-height:560px;padding:clamp(28px,4.5vw,68px);overflow:hidden;border:1px solid rgb(218 219 226 / 70%);border-radius:12px;background:linear-gradient(135deg,#fffffff5,#f4faffe5 58%,#edf6ffd1),#fff;box-shadow:var(--shadow-crisp)}.agent-hero-copy{display:grid;gap:18px}.agent-kicker{margin:0;color:var(--blue);font-size:.84rem;font-weight:780}.agent-hero h1{max-width:720px;margin:0;color:#15171a;font-size:clamp(2.45rem,3.35vw,3.72rem);font-weight:760;line-height:1.08;letter-spacing:0;text-wrap:balance}.agent-hero h1 span{display:block;white-space:nowrap}.agent-hero-copy>p:not(.agent-kicker){max-width:620px;margin:0;color:#34373fc2;font-size:1.08rem;line-height:1.78}.agent-hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:8px}.agent-hero-tags span{padding:8px 11px;border:1px solid rgb(177 215 250 / 82%);border-radius:999px;background:#edf6ffb8;color:var(--blue-deep);font-size:.8rem;font-weight:730}.agent-hero-visual,.agent-visual-grid figure{margin:0}.agent-hero-visual{overflow:hidden;border:1px solid rgb(214 219 232 / 76%);border-radius:12px;background:#fff;box-shadow:0 36px 88px #1d1d1f21}.agent-hero-visual img{display:block;width:100%;aspect-ratio:16 / 9;height:auto;object-fit:cover}.agent-curriculum-workspace{background:linear-gradient(90deg,rgb(0 113 227 / 4%) 1px,transparent 1px),linear-gradient(rgb(0 113 227 / 3%) 1px,transparent 1px),linear-gradient(180deg,#f9fcff,#f3f7fc);background-size:42px 42px,42px 42px,auto}.agent-step-hero{background:radial-gradient(circle at 84% 12%,rgb(218 246 235 / 58%),transparent 34%),linear-gradient(135deg,#fffffff5,#f5faffe5)}.agent-stage-visual{position:relative;display:grid;min-width:0;grid-template-rows:auto minmax(0,1fr) auto;align-content:stretch;gap:clamp(16px,2vw,24px);min-height:clamp(560px,42vw,760px);padding:clamp(18px,2vw,24px);overflow:hidden;border:1px solid rgb(214 219 232 / 82%);border-radius:8px;background:linear-gradient(145deg,#ffffffeb,#f2f8ffd6),#fff;box-shadow:0 36px 90px #1d1d1f1f,inset 0 1px #ffffffe5}.agent-stage-visual:before{position:absolute;inset:0;pointer-events:none;content:"";background:linear-gradient(90deg,rgb(0 113 227 / 5%) 1px,transparent 1px),linear-gradient(rgb(0 113 227 / 4%) 1px,transparent 1px);background-size:34px 34px}.agent-stage-image{position:relative;z-index:1;display:grid;min-height:clamp(360px,30vw,540px);margin:0;overflow:hidden;border:1px solid rgb(214 219 232 / 70%);border-radius:8px;background:#ffffffb3;box-shadow:inset 0 1px #ffffffd1}.agent-stage-image img{display:block;width:100%;height:100%;min-height:0;object-fit:contain;object-position:center;transform:scale(1.045)}.agent-stage-visual .visual-stages{gap:10px}.agent-stage-visual .visual-stages div{justify-content:center;padding:10px 12px}.agent-stage-visual .visual-stages strong{overflow:visible;font-size:clamp(.8rem,.85vw,.96rem);text-overflow:clip}.agent-longread-card p{max-width:1120px}.agent-takeaway-grid .stats-deep-card{min-height:230px}.agent-student-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.agent-student-card{display:grid;align-content:start;gap:12px;min-width:0;min-height:250px;padding:22px;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffc7;box-shadow:var(--shadow-soft)}.agent-student-card.primary{background:radial-gradient(circle at 88% 18%,rgb(218 246 235 / 70%),transparent 36%),#ffffffc7}.agent-student-card h3{margin:0;color:var(--ink);font-size:1.08rem;font-weight:760;line-height:1.38}.agent-student-card p:not(.eyebrow){margin:0;color:var(--muted);font-size:.94rem;line-height:1.75}.agent-process-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.agent-process-list article{position:relative;display:grid;align-content:start;gap:12px;min-height:190px;padding:18px;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffc7;box-shadow:var(--shadow-soft)}.agent-process-list article:not(:last-child):after{position:absolute;top:34px;right:-12px;z-index:1;color:#0071e36b;content:"->";font-size:1rem;font-weight:780}.agent-process-list span{display:grid;width:34px;height:34px;place-items:center;border-radius:8px;background:var(--blue);color:#fff;font-size:.82rem;font-weight:800;box-shadow:0 14px 28px #0071e333}.agent-process-list p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.68}.agent-reader-section .book-reader{grid-template-columns:48px minmax(0,760px) 48px}.agent-section{display:grid;gap:20px}.agent-section-heading{display:flex;align-items:end;justify-content:space-between;gap:18px;border-top:1px solid var(--line-soft);padding-top:26px}.agent-section-heading h2{max-width:820px;margin:4px 0 0;color:var(--ink);font-size:clamp(1.55rem,2.4vw,2.35rem);font-weight:730;line-height:1.18;letter-spacing:0}.roadmap-heading,.book-heading,.concept-heading{display:grid;justify-content:center;justify-items:center;text-align:center}.roadmap-heading h2,.book-heading h2,.concept-heading h2{max-width:none;width:fit-content;justify-self:center;text-align:center}.concept-section{gap:24px}.concept-grid{display:grid;gap:20px}.concept-card{display:grid;grid-template-columns:minmax(290px,.78fr) minmax(420px,1.22fr);gap:clamp(22px,3vw,44px);align-items:center;overflow:hidden;padding:clamp(18px,2.8vw,34px);border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:linear-gradient(135deg,#ffffffeb,#f6faffc7),#fff;box-shadow:var(--shadow-soft)}.concept-card.reverse{grid-template-columns:minmax(420px,1.22fr) minmax(290px,.78fr)}.concept-card.reverse .concept-copy{order:2}.concept-card.reverse figure{order:1}.concept-copy{display:grid;gap:12px}.concept-copy>span{color:var(--blue);font-size:.76rem;font-weight:780;letter-spacing:0;text-transform:uppercase}.concept-copy h3{margin:0;color:var(--ink);font-size:clamp(1.38rem,2vw,2.05rem);font-weight:760;line-height:1.18;letter-spacing:0}.concept-copy p{margin:0;color:#34373fc2;font-size:1rem;line-height:1.72}.concept-copy ul{display:grid;gap:9px;margin:6px 0 0;padding:0;list-style:none}.concept-copy li{position:relative;padding-left:18px;color:var(--muted-strong);font-size:.92rem;line-height:1.62}.concept-copy li:before{position:absolute;top:.72em;left:0;width:6px;height:6px;border-radius:50%;background:var(--blue);content:""}.concept-card figure{margin:0;overflow:hidden;border:1px solid rgb(214 219 232 / 76%);border-radius:8px;background:#fff;box-shadow:0 22px 60px #1d1d1f1a}.concept-card img{display:block;width:100%;height:auto}.agent-stage-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:10px}.agent-stage-card{display:grid;align-content:start;min-height:230px;gap:10px;padding:16px;border:1px solid rgb(218 219 226 / 72%);border-radius:12px;background:#ffffffbd;box-shadow:var(--shadow-soft)}.agent-stage-card span{color:var(--blue);font-size:.76rem;font-weight:780}.agent-stage-card h3{margin:0;color:var(--ink);font-size:1.02rem;font-weight:760;line-height:1.28}.agent-stage-card p,.agent-stage-card small{margin:0;color:var(--muted);font-size:.84rem;line-height:1.58}.agent-stage-card small{color:var(--muted-strong)}.agent-visual-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.agent-visual-grid figure{overflow:hidden;border:1px solid rgb(218 219 226 / 72%);border-radius:12px;background:#ffffffc7;box-shadow:var(--shadow-soft)}.agent-visual-grid figure.wide{grid-column:span 2}.agent-visual-grid img{display:block;width:100%;aspect-ratio:1.34;object-fit:cover;object-position:top center;background:#fff}.agent-visual-grid figcaption{display:grid;gap:5px;padding:13px 14px 15px}.agent-visual-grid strong{color:var(--ink);font-size:.96rem;font-weight:760}.agent-visual-grid span{color:var(--muted);font-size:.83rem;line-height:1.55}.book-section{gap:24px}.book-reader{display:grid;grid-template-columns:48px minmax(0,900px) 48px;justify-content:center;gap:18px;align-items:center}.book-frame{position:relative;overflow:hidden;border:1px solid rgb(218 219 226 / 74%);border-radius:8px;background:radial-gradient(circle at 50% 42%,#fffffff5,#eff7ffb3 56%,#e4eefabd),#f4f8ff;box-shadow:0 38px 100px #1d1d1f24}.book-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border-bottom:1px solid rgb(218 219 226 / 72%);background:#ffffffc7;color:var(--muted-strong);font-size:.88rem;font-weight:720}.book-toolbar span{display:inline-flex;min-width:0;align-items:center;gap:8px}.book-toolbar strong{flex:0 0 auto;color:var(--ink);font-size:.9rem;font-weight:760}.reader-expand{display:inline-flex;flex:0 0 auto;align-items:center;gap:6px;padding:7px 10px;border:1px solid rgb(177 215 250 / 82%);border-radius:999px;background:#edf6ffb8;color:var(--blue-deep);font:inherit;font-size:.78rem;font-weight:760;cursor:pointer}.reader-expand:hover{border-color:#4089e68c;background:#e2f2ffe5}.book-single{position:relative;display:grid;justify-items:center;padding:clamp(16px,2.4vw,32px)}.book-page{position:relative;z-index:1;display:grid;width:min(100%,700px);margin:0;overflow:hidden;aspect-ratio:1013 / 1432;border:1px solid rgb(218 219 226 / 78%);border-radius:8px;background:#fff;box-shadow:0 18px 48px #1d1d1f29;animation:bookPageIn .26s ease both;cursor:zoom-in;padding:0}.book-page img{display:block;width:100%;height:100%;object-fit:contain;background:#fff}.reader-modal{position:fixed;inset:0;z-index:200;display:grid;grid-template-rows:auto minmax(0,1fr);background:radial-gradient(circle at 50% 10%,rgb(255 255 255 / 18%),transparent 38%),#f5f8fcf5;-webkit-backdrop-filter:blur(26px) saturate(130%);backdrop-filter:blur(26px) saturate(130%)}.reader-modal-bar{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:14px;align-items:center;padding:14px clamp(14px,2.2vw,28px);border-bottom:1px solid rgb(210 210 215 / 70%);background:#ffffffb8}.reader-modal-bar span{display:inline-flex;min-width:0;align-items:center;gap:8px;color:var(--ink);font-size:.92rem;font-weight:760}.reader-modal-bar strong{color:var(--muted-strong);font-size:.88rem;font-weight:760}.reader-modal-bar button,.reader-modal-turn{display:grid;place-items:center;border:1px solid rgb(202 214 232 / 80%);border-radius:50%;background:#ffffffdb;color:var(--blue);cursor:pointer}.reader-modal-bar button{width:38px;height:38px}.reader-modal-body{display:grid;grid-template-columns:58px minmax(0,1fr) 58px;gap:clamp(10px,2vw,24px);align-items:center;height:calc(100vh - 67px);min-height:0;padding:clamp(14px,2vw,26px);overflow:hidden}.reader-modal-body img{display:block;width:auto;max-width:min(100%,860px);max-height:calc(100vh - 120px);height:auto;justify-self:center;object-fit:contain;border:1px solid rgb(218 219 226 / 78%);border-radius:8px;background:#fff;box-shadow:0 28px 90px #1d1d1f2e}.reader-modal-turn{width:54px;height:54px;box-shadow:0 16px 36px #1d1d1f1c}.reader-modal-turn:disabled{cursor:default;opacity:.32}.stats-main{gap:38px}.stats-curriculum-workspace{display:grid;grid-template-columns:300px minmax(0,1fr);gap:28px;min-height:calc(100svh - 84px);padding:34px clamp(20px,3.8vw,58px) 64px;background:linear-gradient(90deg,rgb(0 113 227 / 4%) 1px,transparent 1px),linear-gradient(rgb(0 113 227 / 3%) 1px,transparent 1px),linear-gradient(180deg,#f8fbff,#f4f8fc);background-size:42px 42px,42px 42px,auto}.stats-curriculum-workspace.agent-curriculum-workspace{grid-template-columns:minmax(260px,280px) minmax(0,1fr);gap:24px;padding:32px clamp(18px,3.2vw,44px) 64px}.stats-step-rail{position:sticky;top:24px;display:grid;align-self:start;gap:22px;max-height:calc(100svh - 118px);overflow:auto;padding:24px;border:1px solid rgb(218 219 226 / 76%);border-radius:8px;background:#ffffffc7;box-shadow:var(--shadow-soft);-webkit-backdrop-filter:blur(18px) saturate(132%);backdrop-filter:blur(18px) saturate(132%)}.stats-step-list{display:grid;gap:10px}.stats-step-button{display:grid;grid-template-columns:48px minmax(0,1fr) 18px;gap:12px;align-items:center;min-width:0;padding:12px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--ink);text-align:left;cursor:pointer;transition:transform .16s ease,border-color .16s ease,background .16s ease,box-shadow .16s ease}.stats-step-button:hover{transform:translateY(-1px);border-color:#0071e32e;background:#ffffffd1}.stats-step-button.active{border-color:#0071e36b;background:radial-gradient(circle at 88% 20%,rgb(218 246 235 / 76%),transparent 38%),linear-gradient(145deg,#fffffff5,#eff8ffe0);box-shadow:0 20px 46px #0071e321}.stats-step-index{display:grid;width:48px;height:48px;place-items:center;border-radius:8px;background:#f1f3f7f5;color:var(--muted-strong);font-size:.92rem;font-weight:780}.stats-step-button.active .stats-step-index{background:var(--blue);color:#fff;box-shadow:0 14px 28px #0071e338}.stats-step-copy{display:grid;min-width:0;gap:5px}.stats-step-copy strong{overflow:hidden;color:var(--ink);font-size:.98rem;font-weight:780;line-height:1.3;text-overflow:ellipsis;white-space:nowrap}.stats-step-copy small{overflow:hidden;color:var(--muted);font-size:.78rem;line-height:1.35;text-overflow:ellipsis;white-space:nowrap}.stats-step-button svg{color:#636c789e}.stats-step-button.active svg{color:var(--blue)}.stats-lesson-panel{display:grid;gap:28px;min-width:0}.stats-step-hero{display:grid;grid-template-columns:minmax(0,.98fr) minmax(420px,.86fr);gap:clamp(22px,4vw,54px);align-items:center;min-height:500px;padding:clamp(28px,4.2vw,58px);border:1px solid rgb(218 219 226 / 76%);border-radius:8px;background:radial-gradient(circle at 84% 12%,rgb(218 246 235 / 58%),transparent 34%),linear-gradient(135deg,#fffffff5,#f5faffe5);box-shadow:var(--shadow-crisp)}.stats-step-title{display:grid;gap:18px}.stats-step-title h1{max-width:760px;margin:0;color:var(--ink);font-size:clamp(2.25rem,3.2vw,3.5rem);font-weight:780;line-height:1.08;letter-spacing:0}.stats-step-title>p{max-width:680px;margin:0;color:var(--muted);font-size:1.05rem;line-height:1.78}.stats-step-objective{display:grid;gap:8px;max-width:720px;padding:18px 20px;border:1px solid rgb(218 219 226 / 86%);border-left:4px solid var(--blue);border-radius:8px;background:#ffffffb8}.stats-step-objective strong{color:var(--ink);font-size:1.02rem;line-height:1.6}.stats-step-hero.agent-step-hero{grid-template-columns:minmax(280px,.52fr) minmax(0,1.48fr);gap:clamp(20px,3vw,44px);align-items:stretch;min-height:auto;padding:clamp(24px,3.2vw,46px)}.agent-step-hero .stats-step-title{align-content:center;max-width:540px}.agent-step-hero .stats-step-title h1{font-size:clamp(2.1rem,2.8vw,3.15rem)}.agent-step-hero .stats-step-title>p,.agent-step-hero .stats-step-objective{max-width:100%}.stats-stage-tags{margin-top:0}.stats-stage-visual{position:relative;display:grid;min-width:0;gap:18px;padding:20px;overflow:hidden;border:1px solid rgb(214 219 232 / 82%);border-radius:8px;background:linear-gradient(145deg,#ffffffeb,#f2f8ffd6),#fff;box-shadow:0 36px 90px #1d1d1f1f,inset 0 1px #ffffffe5}.stats-stage-visual:before{position:absolute;inset:0;pointer-events:none;content:"";background:linear-gradient(90deg,rgb(0 113 227 / 5%) 1px,transparent 1px),linear-gradient(rgb(0 113 227 / 4%) 1px,transparent 1px);background-size:34px 34px}.stats-visual-canvas{position:relative;z-index:1;min-height:245px;overflow:hidden;border:1px solid rgb(214 219 232 / 70%);border-radius:8px;background:#ffffff9e;box-shadow:inset 0 1px #ffffffd1}.hypothesis-card{position:absolute;display:grid;gap:5px;width:142px;padding:14px;border:1px solid rgb(0 113 227 / 18%);border-radius:8px;background:#fff;box-shadow:0 18px 38px #0071e31f}.hypothesis-card.base{top:34px;left:34px}.hypothesis-card.exp{top:34px;right:34px;border-color:#27a1663d}.hypothesis-card span,.hypothesis-result span,.metric-row span,.monitor-node span,.rollout-step span,.rollout-report span{color:var(--blue);font-size:.74rem;font-weight:780}.hypothesis-card strong,.hypothesis-result strong,.monitor-node strong,.rollout-step strong,.rollout-report strong{color:var(--ink);font-size:.92rem;line-height:1.35}.hypothesis-line{position:absolute;top:102px;left:52px;right:52px;height:2px;background:linear-gradient(90deg,var(--blue),rgb(39 161 102 / 78%))}.hypothesis-result{position:absolute;right:38px;bottom:30px;left:38px;display:grid;grid-template-columns:auto 1fr auto 1fr;gap:10px;align-items:center;padding:16px;border-radius:8px;background:#eff7ffc2}.metric-visual{display:grid;align-content:center;gap:18px;padding:26px}.metric-row{display:grid;grid-template-columns:58px 86px minmax(0,1fr);gap:12px;align-items:center}.metric-row strong{color:var(--ink);font-size:.9rem}.metric-row i{display:block;width:var(--metric-width);height:14px;border-radius:999px;background:linear-gradient(90deg,var(--blue),rgb(39 161 102 / 80%))}.sample-dials,.split-bottom{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}.sample-dials span,.split-bottom span{padding:7px 10px;border-radius:999px;background:#e5f4ffd1;color:var(--blue-deep);font-size:.76rem;font-weight:760}.split-visual{display:grid;align-content:center;gap:22px;padding:24px}.world-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.world-grid i{aspect-ratio:1;border-radius:8px;background:#e7ebf1d1}.world-grid i.base{background:#d3e9ffe5}.world-grid i.exp{background:#d2f4e6e5}.monitor-visual{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;align-content:center;padding:22px}.monitor-node{display:grid;gap:8px;min-height:130px;align-content:center;padding:14px;border:1px solid rgb(218 219 226 / 76%);border-radius:8px;background:#ffffffb8}.inference-visual svg{display:block;width:100%;height:100%;min-height:245px}.inference-visual .axis{fill:none;stroke:#7a849270;stroke-width:2}.inference-visual .curve{fill:none;stroke-width:7;stroke-linecap:round}.inference-visual .control{stroke:#0071e3b3}.inference-visual .treatment{stroke:#27a166b8}.inference-visual .ci{stroke:#1118274d;stroke-dasharray:7 8;stroke-width:2.2}.inference-visual .ci.alt{stroke:#27a16675}.inference-visual text{fill:#1e242eb8;font-size:18px;font-weight:760}.rollout-visual{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;align-content:center;padding:22px}.rollout-step,.rollout-report{display:grid;gap:8px;align-content:center;min-height:106px;padding:14px;border:1px solid rgb(218 219 226 / 76%);border-radius:8px;background:#ffffffb8}.rollout-step:nth-child(2),.rollout-step:nth-child(3),.rollout-step:nth-child(4){transform:translateY(-10px)}.rollout-report{grid-column:1 / -1;min-height:auto;background:#e5f4ffad}.stats-step-section{display:grid;gap:18px;padding-top:26px;border-top:1px solid rgb(218 219 226 / 68%)}.stats-step-context{display:grid;grid-template-columns:1.15fr .9fr 1fr;gap:14px}.stats-context-card{display:grid;align-content:start;gap:12px;min-width:0;min-height:220px;padding:20px;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffc2;box-shadow:var(--shadow-soft)}.stats-context-card.primary{background:radial-gradient(circle at 88% 18%,rgb(218 246 235 / 70%),transparent 36%),#ffffffc7}.stats-context-card h3{margin:0;color:var(--ink);font-size:1.05rem;font-weight:760;line-height:1.35}.stats-context-card p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.68}.stats-context-card ul{display:grid;gap:10px;padding:0;margin:0;list-style:none}.stats-context-card li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:8px;align-items:start;color:var(--muted-strong);font-size:.9rem;line-height:1.55}.stats-context-card svg{margin-top:2px;color:var(--blue)}.stats-lesson-primer{display:grid;gap:14px;padding:24px;border:1px solid rgb(218 219 226 / 72%);border-left:4px solid var(--blue);border-radius:8px;background:radial-gradient(circle at 96% 16%,rgb(218 246 235 / 64%),transparent 32%),#fffc;box-shadow:var(--shadow-soft)}.stats-lesson-primer h3{max-width:980px;margin:0;color:var(--ink);font-size:1.22rem;font-weight:780;line-height:1.46}.stats-lesson-primer p{max-width:1060px;margin:0;color:var(--muted);font-size:.96rem;line-height:1.78}.stats-teaching-layout{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(340px,.82fr);gap:16px;align-items:stretch}.stats-longread-card,.stats-platform-card,.stats-case-card,.stats-interview-deep-grid article{min-width:0;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffc7;box-shadow:var(--shadow-soft)}.stats-longread-card{display:grid;gap:14px;padding:24px;background:linear-gradient(135deg,#ffffffeb,#f6fbffdb),#fff}.stats-longread-card h3,.stats-platform-card h3,.stats-case-card h3,.stats-interview-deep-grid h3{margin:0;color:var(--ink);font-weight:780;line-height:1.4}.stats-longread-card h3{font-size:1.24rem}.stats-longread-card p,.stats-platform-card p,.stats-case-card p,.stats-case-card li,.stats-interview-deep-grid p,.stats-interview-deep-grid li{margin:0;color:var(--muted);font-size:.94rem;line-height:1.76}.stats-longread-card p:not(.eyebrow){padding-top:12px;border-top:1px solid var(--line-soft)}.stats-longread-card p:not(.eyebrow):first-of-type{padding-top:0;border-top:0}.stats-platform-card{display:grid;align-content:start;gap:16px;padding:22px;background:radial-gradient(circle at 88% 16%,rgb(218 246 235 / 66%),transparent 34%),#fffc}.stats-platform-card h3{font-size:1.12rem}.stats-platform-list{display:grid;gap:10px}.stats-platform-list div{display:grid;gap:7px;padding:14px;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffb8}.stats-platform-list span{color:var(--blue);font-size:.8rem;font-weight:800}.stats-platform-list small{display:block;padding:8px 10px;border-radius:8px;background:#eff7ffc2;color:var(--blue-deep);font-size:.78rem;font-weight:720;line-height:1.5}.stats-case-card{display:grid;grid-template-columns:minmax(260px,.62fr) minmax(0,1fr) minmax(260px,.52fr);gap:18px;align-items:start;padding:24px;background:radial-gradient(circle at 6% 18%,rgb(229 244 255 / 78%),transparent 36%),#fffc}.stats-case-card h3{margin-bottom:8px;font-size:1.18rem}.stats-case-card ol{display:grid;gap:10px;padding:0;margin:0;counter-reset:case-step;list-style:none}.stats-case-card li{position:relative;min-height:42px;padding:10px 12px 10px 44px;border-radius:8px;background:#f1f3f7c7}.stats-case-card li:before{position:absolute;top:10px;left:12px;display:grid;width:22px;height:22px;place-items:center;border-radius:50%;background:var(--blue);color:#fff;content:counter(case-step);counter-increment:case-step;font-size:.74rem;font-weight:800}.stats-case-card>strong{display:block;padding:16px;border:1px solid rgb(39 161 102 / 20%);border-radius:8px;background:#e0f8eeb8;color:#14724a;font-size:.95rem;line-height:1.68}.stats-deep-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.stats-deep-card,.stats-formula-list article,.stats-pitfall-panel,.stats-stage-qa article{min-width:0;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffc7;box-shadow:var(--shadow-soft)}.stats-deep-card{display:grid;align-content:start;gap:12px;min-height:310px;padding:20px}.stats-deep-card h3,.stats-stage-qa h3{margin:0;color:var(--ink);font-size:1.04rem;font-weight:760;line-height:1.38}.stats-deep-card p,.stats-stage-qa p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.72}.stats-deep-card ul,.stats-pitfall-panel ul{display:grid;gap:9px;padding:0;margin:4px 0 0;list-style:none}.stats-deep-card li{padding:8px 10px;border-radius:8px;background:#f1f3f7d1;color:var(--muted-strong);font-size:.84rem;font-weight:690;line-height:1.45}.stats-knowledge-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.72fr);gap:18px;align-items:start}.stats-formula-panel,.stats-pitfall-panel{display:grid;gap:16px}.stats-formula-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.stats-formula-list article{display:grid;gap:12px;min-height:230px;padding:20px}.stats-formula-list span{color:var(--blue);font-size:.78rem;font-weight:780}.stats-formula-list code{display:block;overflow-wrap:anywhere;padding:12px;border:1px solid rgb(177 215 250 / 64%);border-radius:8px;background:#eff7ffc2;color:var(--blue-deep);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.86rem;line-height:1.55}.stats-formula-list p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.72}.stats-pitfall-panel{padding:20px}.stats-pitfall-panel li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:8px;align-items:start;padding:11px 0;border-top:1px solid var(--line-soft);color:var(--muted-strong);font-size:.9rem;line-height:1.58}.stats-pitfall-panel li:first-child{border-top:0}.stats-pitfall-panel svg{margin-top:3px;color:var(--amber)}.stats-stage-qa{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.stats-stage-qa article{display:grid;align-content:start;gap:12px;min-height:210px;padding:20px}.stats-stage-qa svg{color:var(--blue)}.stats-interview-deep-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.stats-interview-deep-grid article{display:grid;align-content:start;gap:14px;min-height:260px;padding:22px;background:radial-gradient(circle at 92% 14%,rgb(218 246 235 / 64%),transparent 30%),#ffffffc7}.stats-interview-deep-grid article>div{display:grid;grid-template-columns:24px minmax(0,1fr);gap:10px;align-items:start}.stats-interview-deep-grid svg{margin-top:3px;color:var(--blue)}.stats-interview-deep-grid h3{font-size:1.02rem}.stats-interview-deep-grid ul{display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0;list-style:none}.stats-interview-deep-grid li{padding:7px 10px;border-radius:999px;background:#eff7ffc7;color:var(--blue-deep);font-size:.78rem;font-weight:720;line-height:1.35}.stats-hero{display:grid;grid-template-columns:minmax(0,.82fr) minmax(420px,1fr);gap:clamp(24px,4vw,64px);align-items:center;min-height:560px;padding:clamp(28px,4.5vw,68px);overflow:hidden;border:1px solid rgb(218 219 226 / 70%);border-radius:12px;background:radial-gradient(circle at 82% 22%,rgb(215 245 235 / 58%),transparent 34%),linear-gradient(135deg,#fffffff5,#f6fbffe0 56%,#eef8f4db),#fff;box-shadow:var(--shadow-crisp)}.stats-hero-copy{display:grid;gap:18px}.stats-hero h1{max-width:680px;margin:0;color:#15171a;font-size:clamp(2.5rem,4vw,4.35rem);font-weight:760;line-height:1.08;letter-spacing:0}.stats-hero h1 span{display:block;white-space:nowrap}.stats-hero-copy>p:not(.agent-kicker){max-width:640px;margin:0;color:#34373fc2;font-size:1.08rem;line-height:1.78}.stats-hero-panel{display:grid;gap:16px}.curve-card{overflow:hidden;border:1px solid rgb(214 219 232 / 76%);border-radius:12px;background:linear-gradient(180deg,#fffffff0,#f1f8ffdb),#fff;box-shadow:0 36px 88px #1d1d1f21}.curve-head{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center;padding:16px 18px 0;color:var(--muted-strong);font-size:.84rem;font-weight:730}.curve-head strong{padding:8px 12px;border-radius:999px;background:#e1f7eed1;color:var(--green);font-size:1rem}.curve-card svg{display:block;width:100%;height:auto}.curve-card .axis{fill:none;stroke:#7a849270;stroke-width:2}.curve-card .curve{fill:none;stroke-width:7;stroke-linecap:round}.curve-card .control{stroke:#0071e3b3}.curve-card .treatment{stroke:#27a166b8}.curve-card .ci{stroke:#1118274d;stroke-dasharray:7 8;stroke-width:2.2}.curve-card .ci.alt{stroke:#27a16675}.curve-card text{fill:#1e242eb8;font-size:18px;font-weight:760}.stats-mini-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.stats-mini-metrics span{display:grid;gap:6px;padding:14px;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffc7}.stats-mini-metrics small{color:var(--muted);font-size:.74rem;font-weight:730}.stats-mini-metrics strong{color:var(--ink);font-size:1.28rem;font-weight:760}.stats-section{gap:22px}.stats-foundation-grid,.inference-grid,.diagnostic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.stats-foundation-card,.inference-card,.decision-panel,.diagnostic-grid article,.ab-workflow article{border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffc2;box-shadow:var(--shadow-soft)}.stats-foundation-card{display:grid;align-content:start;min-height:255px;gap:11px;padding:18px}.stats-foundation-card>span,.ab-workflow article>span{color:var(--blue);font-size:.78rem;font-weight:780}.stats-foundation-card h3,.inference-card h3,.decision-panel h3,.diagnostic-grid h3,.ab-workflow h3{margin:0;color:var(--ink);font-size:1.05rem;font-weight:760;line-height:1.3}.stats-foundation-card p,.stats-foundation-card small,.inference-card p,.decision-panel p,.diagnostic-grid p,.ab-workflow p{margin:0;color:var(--muted);font-size:.9rem;line-height:1.64}.stats-foundation-card small{color:var(--muted-strong)}.inference-card{display:grid;align-content:start;min-height:290px;gap:12px;padding:18px}.inference-card>span{color:var(--blue);font-size:.72rem;font-weight:780;text-transform:uppercase}.inference-card code{display:block;overflow-wrap:anywhere;padding:10px 11px;border:1px solid rgb(177 215 250 / 64%);border-radius:8px;background:#eff7ffb8;color:var(--blue-deep);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.8rem;line-height:1.5}.inference-card div{display:flex;flex-wrap:wrap;gap:7px;margin-top:2px}.inference-card small{padding:5px 8px;border-radius:999px;background:#f1f3f7db;color:var(--muted-strong);font-size:.72rem;font-weight:730}.stats-workflow-section{display:grid;gap:22px}.experiment-map{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;align-items:stretch}.experiment-stage{position:relative;display:grid;min-width:0;min-height:220px;align-content:start;gap:12px;padding:18px;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffc2;color:inherit;text-align:left;box-shadow:var(--shadow-soft);cursor:pointer;transition:transform .16s ease,border-color .16s ease,background .16s ease,box-shadow .16s ease}.experiment-stage:hover{transform:translateY(-2px);border-color:#0071e357;background:#ffffffeb;box-shadow:0 20px 46px #1d1d1f1a}.experiment-stage.active{border-color:#0071e375;background:radial-gradient(circle at 84% 16%,rgb(218 246 235 / 72%),transparent 34%),linear-gradient(180deg,#fffffff5,#f0f8ffdb);box-shadow:0 24px 60px #0071e31f}.experiment-stage:not(:last-child):after{position:absolute;top:32px;right:-12px;z-index:1;color:#0071e36b;content:"->";font-size:1rem;font-weight:780}.experiment-stage span,.stage-detail-card span,.interview-drill-grid span{color:var(--blue);font-size:.76rem;font-weight:780}.experiment-stage strong{color:var(--ink);font-size:1.02rem;font-weight:760;line-height:1.34}.experiment-stage small{color:var(--muted);font-size:.86rem;font-weight:560;line-height:1.62}.experiment-stage-steps{display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:2px 0 0;list-style:none}.experiment-stage-steps li{padding:5px 8px;border-radius:999px;background:#f1f3f7db;color:var(--muted-strong);font-size:.72rem;font-weight:720;line-height:1.2}.experiment-stage.active .experiment-stage-steps li{background:#e5f4ffd1;color:var(--blue-deep)}.stage-detail-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.stage-detail-card,.interview-drill-grid article,.review-template article{display:grid;align-content:start;gap:12px;min-width:0;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffffc2;box-shadow:var(--shadow-soft)}.stage-detail-card{min-height:245px;padding:20px}.stage-detail-card p,.interview-drill-grid p,.review-template p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.68;overflow-wrap:anywhere}.ab-workflow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.ab-workflow article{position:relative;display:grid;align-content:start;min-height:210px;gap:10px;padding:18px}.ab-workflow article:not(:last-child):after{position:absolute;top:32px;right:-12px;z-index:1;color:#0071e36b;content:"->";font-size:1rem;font-weight:780}.decision-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:14px}.decision-snapshot{display:grid;grid-template-columns:minmax(220px,.7fr) minmax(260px,1fr) minmax(320px,1.1fr);gap:18px;align-items:center;padding:22px;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:radial-gradient(circle at 8% 22%,rgb(229 244 255 / 84%),transparent 36%),#ffffffd1;box-shadow:var(--shadow-soft)}.decision-snapshot h3{margin:0;color:var(--ink);font-size:1.18rem;font-weight:760;line-height:1.34}.decision-snapshot p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.68}.decision-metrics{display:flex;flex-wrap:wrap;gap:8px}.decision-metrics span{padding:7px 10px;border:1px solid rgb(177 215 250 / 66%);border-radius:999px;background:#eff7ffbd;color:var(--blue-deep);font-size:.78rem;font-weight:740;line-height:1.25}.decision-panel{display:grid;align-content:start;gap:11px;min-height:200px;padding:20px}.decision-panel>span{color:var(--blue);font-size:.76rem;font-weight:800}.decision-panel.primary{background:radial-gradient(circle at 88% 18%,rgb(218 246 235 / 70%),transparent 36%),#ffffffc7}.diagnostic-grid article{display:grid;align-content:start;gap:11px;min-height:230px;padding:18px}.diagnostic-grid svg{color:var(--blue)}.interview-drill-grid,.review-template{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.interview-drill-grid article,.review-template article{min-height:190px;padding:18px}.interview-drill-grid h3{margin:0;color:var(--ink);font-size:.98rem;font-weight:760;line-height:1.36}.interview-drill-grid svg,.review-template svg{color:var(--blue)}.review-template h3{margin:0;color:var(--ink);font-size:1.02rem;font-weight:760;line-height:1.34}.retrospective-script{padding:24px;border:1px solid rgb(0 113 227 / 24%);border-left:4px solid var(--blue);border-radius:8px;background:radial-gradient(circle at 96% 16%,rgb(218 246 235 / 64%),transparent 32%),#ffffffd1;box-shadow:var(--shadow-soft)}.retrospective-script p{max-width:1120px;margin:0;color:var(--ink);font-size:1rem;font-weight:650;line-height:1.9}.book-turn{display:grid;width:48px;height:48px;place-items:center;border:1px solid rgb(202 214 232 / 80%);border-radius:50%;background:#ffffffdb;color:var(--blue);box-shadow:0 16px 36px #1d1d1f1c;cursor:pointer;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease,opacity .16s ease}.book-turn:hover:not(:disabled){transform:translateY(-1px);border-color:#4089e67f;box-shadow:0 20px 44px #1d1d1f26}.book-turn:disabled{cursor:default;opacity:.34}@keyframes bookPageIn{0%{opacity:.7;transform:translateY(8px) rotateY(2deg)}to{opacity:1;transform:translateY(0) rotateY(0)}}.topbar{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:minmax(250px,1fr) auto auto minmax(280px,520px) auto;gap:clamp(12px,1.4vw,22px);align-items:center;padding:16px clamp(18px,2.2vw,34px);border-bottom:1px solid rgb(210 210 215 / 70%);background:#fafafcb8;-webkit-backdrop-filter:blur(28px) saturate(140%);backdrop-filter:blur(28px) saturate(140%)}.brand-lockup{display:flex;min-width:0;align-items:center;gap:12px}.brand-mark{display:grid;width:42px;height:42px;flex:0 0 auto;place-items:center;border:1px solid var(--line);border-radius:8px;background:linear-gradient(180deg,#fff,#f1f5ff);color:var(--blue);box-shadow:0 12px 28px #0071e31a,inset 0 1px #ffffffd9}.brand-lockup p,.eyebrow{margin:0;color:var(--blue);font-size:.72rem;font-weight:760;letter-spacing:0;text-transform:uppercase}.brand-lockup h1{overflow:hidden;margin:2px 0 0;color:var(--ink);font-size:1.16rem;font-weight:760;letter-spacing:0;text-overflow:ellipsis;white-space:nowrap}.home-return{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:42px;padding:0 13px;border:1px solid rgb(214 224 235 / 82%);border-radius:999px;background:#ffffffa8;color:var(--ink);font-size:.84rem;font-weight:740;box-shadow:0 14px 38px #1d1d1f0d,inset 0 1px #ffffffeb;-webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);transition:transform .16s ease,background .16s ease,box-shadow .16s ease}.home-return:hover{transform:translateY(-1px);background:#ffffffd1;box-shadow:0 18px 46px #1d1d1f17,inset 0 1px #fffffff5}.ai-entry{display:inline-flex;min-width:0;align-items:center;gap:9px;height:42px;padding:4px 11px 4px 5px;border:1px solid rgb(214 224 235 / 82%);border-radius:999px;background:#ffffffad;color:#1d1d1f;box-shadow:0 14px 38px #1d1d1f0f,inset 0 1px #ffffffeb;-webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);transition:transform .16s ease,box-shadow .16s ease,background .16s ease}.ai-entry:hover{transform:translateY(-1px);background:#ffffffd1;box-shadow:0 18px 46px #1d1d1f1a,inset 0 1px #fffffff5}.ai-entry img{width:32px;height:32px;flex:0 0 auto;border-radius:999px;object-fit:cover;box-shadow:0 0 0 1px #ffffffe5,0 8px 18px #0071e31f}.ai-entry span{display:grid;min-width:0;gap:1px;text-align:left}.ai-entry strong,.ai-entry small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ai-entry strong{font-size:.78rem;font-weight:780}.ai-entry small{color:var(--muted);font-size:.68rem;font-weight:690}.ai-entry svg{flex:0 0 auto;color:var(--blue)}.topbar-search{display:flex;min-width:0;align-items:center;gap:10px;height:42px;padding:0 14px;border:1px solid rgb(214 214 220 / 70%);border-radius:8px;background:#ffffff9e;color:var(--muted);box-shadow:0 14px 42px #1d1d1f0d,inset 0 1px #fffffff2}.topbar-search span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.topbar-meta{display:inline-flex;align-items:center;gap:10px;height:42px;padding:0 14px;border:1px solid #202023;border-radius:8px;background:#1d1d1f;color:#fff}.topbar-meta span{color:#c7c7cc;font-size:.82rem}.topbar-meta strong{font-size:.92rem;font-weight:760}.workspace{display:grid;grid-template-columns:260px minmax(0,1fr) 286px;gap:20px;align-items:start;width:min(100%,1840px);margin:0 auto;padding:28px clamp(18px,2vw,34px) 48px}.rail,.summary-panel{position:sticky;top:90px;display:flex;min-width:0;flex-direction:column;gap:14px;max-height:calc(100vh - 112px);overflow:auto;scrollbar-width:thin}.rail{padding:14px;border:1px solid rgb(218 219 226 / 72%);border-radius:8px;background:#ffffff94;box-shadow:var(--shadow-soft);-webkit-backdrop-filter:blur(22px) saturate(130%);backdrop-filter:blur(22px) saturate(130%)}.rail-header{padding:2px 2px 10px}.rail-header h2,.section-heading h2,.summary-block h2{margin:4px 0 0;color:var(--ink);font-size:1.02rem;font-weight:760;letter-spacing:0}.topic-list{display:flex;flex-direction:column;gap:7px}.topic-button{display:grid;grid-template-columns:34px minmax(0,1fr) 16px;gap:10px;align-items:center;width:100%;min-height:62px;padding:10px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--ink);text-align:left;transition:background .17s ease,border-color .17s ease,box-shadow .17s ease,transform .17s ease}.topic-button:hover,.topic-button.active{transform:translateY(-1px);border-color:#d6d6dcd1;background:#ffffffbd;box-shadow:0 18px 44px #1d1d1f14}.topic-button svg{color:#a1a1a6}.topic-button.active svg{color:var(--blue)}.topic-index{display:grid;width:34px;height:34px;place-items:center;border-radius:8px;background:#ececf1;color:var(--muted-strong);font-size:.78rem;font-weight:760}.topic-button.active .topic-index{background:linear-gradient(180deg,var(--blue),#0059c8);color:#fff;box-shadow:0 10px 22px #0071e33d}.topic-button.active{border-color:#1d1d1fdb;background:#1d1d1f;color:#fff}.topic-button.active .topic-copy small,.topic-button.active svg{color:#c7c7cc}.topic-copy{display:grid;min-width:0;gap:5px}.topic-copy strong,.topic-copy small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.topic-copy strong{font-size:.94rem;font-weight:760}.topic-copy small{color:var(--muted);font-size:.78rem}.source-policy{display:none;min-width:0;gap:10px;padding:13px;border:1px solid rgb(240 219 173 / 72%);border-radius:8px;background:#fff7e7a8;color:#714300}.source-policy svg{flex:0 0 auto}.source-policy p{min-width:0;margin:0;font-size:.82rem;line-height:1.58;overflow-wrap:anywhere}.lesson-panel{display:flex;min-width:0;flex-direction:column;gap:24px}.lesson-hero{position:relative;display:grid;min-width:0;grid-template-columns:minmax(430px,1.05fr) minmax(300px,.82fr);gap:clamp(20px,2.4vw,34px);align-items:stretch;min-height:430px;overflow:hidden;padding:clamp(28px,3.2vw,46px);border:1px solid rgb(218 219 226 / 70%);border-radius:8px;background:linear-gradient(135deg,#fffffff5,#f9faffed 48%,#ebf3ffe0),var(--surface-solid);box-shadow:var(--shadow-crisp)}.lesson-hero:before{position:absolute;inset:0;pointer-events:none;content:"";background:linear-gradient(120deg,transparent 0%,rgb(255 255 255 / 65%) 34%,transparent 58%),linear-gradient(90deg,rgb(0 113 227 / 5%) 1px,transparent 1px),linear-gradient(rgb(0 113 227 / 4%) 1px,transparent 1px);background-size:auto,48px 48px,48px 48px;opacity:.8}.lesson-hero:after{position:absolute;top:0;bottom:0;left:-28%;width:34%;pointer-events:none;content:"";background:linear-gradient(90deg,transparent,rgb(255 255 255 / 72%),transparent);filter:blur(8px);animation:hero-sheen 8s ease-in-out infinite}.lesson-title{position:relative;z-index:1;display:flex;min-width:0;flex-direction:column;justify-content:center}.chapter-kicker{display:grid;grid-template-columns:auto minmax(28px,64px) minmax(0,max-content);gap:10px;align-items:center;width:fit-content;max-width:100%;margin-bottom:16px;color:var(--muted-strong)}.chapter-kicker span,.chapter-kicker strong{overflow:hidden;font-size:.75rem;font-weight:780;text-overflow:ellipsis;white-space:nowrap}.chapter-kicker span{color:var(--blue);text-transform:uppercase}.chapter-kicker i{display:block;height:1px;background:linear-gradient(90deg,#0071e394,#0071e300)}.pill-row,.company-tags{display:flex;flex-wrap:wrap;gap:8px}.pill-row span,.company-tags span{display:inline-flex;align-items:center;min-height:28px;padding:5px 10px;border:1px solid rgb(177 215 250 / 85%);border-radius:999px;background:#edf6ffc7;color:var(--blue-deep);font-size:.78rem;font-weight:720}.lesson-title h2{max-width:100%;margin:14px 0 10px;color:#1d1d1f;font-size:clamp(2rem,2.08vw,2.55rem);font-weight:720;line-height:1.08;letter-spacing:0;overflow:visible;text-wrap:nowrap;white-space:nowrap;word-break:keep-all}.lesson-title h2 span{display:inline}.lesson-title p{max-width:650px;margin:0;color:var(--muted);font-size:1rem;line-height:1.68}.hero-insight{display:grid;max-width:680px;gap:6px;margin-top:22px;padding:14px 16px;border:1px solid rgb(214 219 232 / 78%);border-left:3px solid var(--blue);border-radius:8px;background:#ffffff94;box-shadow:inset 0 1px #ffffffeb}.hero-insight span{color:var(--blue);font-size:.72rem;font-weight:780;text-transform:uppercase}.hero-insight strong{color:var(--ink);font-size:.92rem;font-weight:640;line-height:1.62}.hero-metrics{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.hero-metrics span{padding:8px 11px;border:1px solid rgb(218 219 226 / 78%);border-radius:8px;background:#ffffff94;color:var(--muted-strong);font-size:.84rem;font-weight:720;box-shadow:inset 0 1px #ffffffeb}.hero-preview{position:relative;z-index:1;display:flex;min-width:0;flex-direction:column;justify-content:space-between;overflow:hidden;border:1px solid rgb(255 255 255 / 14%);border-radius:8px;background:linear-gradient(155deg,#10151f,#171f2d 45%,#0c1119);color:#f5f7fb;box-shadow:0 44px 110px #1218264d,inset 0 1px #ffffff1f}.hero-preview:before{position:absolute;inset:0;pointer-events:none;content:"";background:linear-gradient(135deg,rgb(255 255 255 / 12%),transparent 36%),linear-gradient(90deg,rgb(255 255 255 / 4%) 1px,transparent 1px),linear-gradient(rgb(255 255 255 / 3%) 1px,transparent 1px);background-size:auto,34px 34px,34px 34px}.hero-preview:after{position:absolute;inset:0;pointer-events:none;content:"";background:linear-gradient(180deg,transparent,rgb(119 183 255 / 16%),transparent);height:90px;animation:preview-scan 6.8s ease-in-out infinite}.preview-topline,.preview-code,.preview-table{position:relative;z-index:1}.preview-topline{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 18px;border-bottom:1px solid rgb(255 255 255 / 10%)}.window-dots{display:flex;gap:6px}.window-dots span{width:8px;height:8px;border-radius:999px;background:#6b7280}.window-dots span:first-child{background:#ff6b64}.window-dots span:nth-child(2){background:#ffd166}.window-dots span:nth-child(3){background:#59d98e}.preview-topline strong{overflow:hidden;color:#dbe6f7;font-size:.82rem;text-overflow:ellipsis;white-space:nowrap}.preview-code{margin:18px 18px 0;padding:22px;border:1px solid rgb(255 255 255 / 10%);border-radius:8px;background:#ffffff0d;color:#dbe6f7;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:.9rem;line-height:1.78}.preview-code span{color:#77b7ff}.query-pipeline{position:relative;min-height:144px;margin:6px 18px 8px}.query-pipeline svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}.pipeline-base,.pipeline-active{fill:none;stroke-linecap:round;stroke-width:3}.pipeline-base{stroke:#ffffff21}.pipeline-active{stroke:#77b7ff;stroke-dasharray:20 18;filter:drop-shadow(0 0 10px rgb(119 183 255 / 55%));animation:pipeline-flow 4.2s linear infinite}.pipeline-node{position:absolute;display:grid;width:74px;height:56px;place-items:center;border:1px solid rgb(255 255 255 / 12%);border-radius:8px;background:#ffffff12;color:#91a4bf;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.pipeline-node span{font-size:.68rem;font-weight:780}.pipeline-node strong{font-size:.78rem;font-weight:780}.pipeline-node.active{border-color:#77b7ff75;background:#77b7ff26;color:#fff;animation:node-glow 3.8s ease-in-out infinite}.node-1{left:2%;top:52%}.node-2{left:28%;top:8%}.node-3{right:28%;top:52%}.node-4{right:2%;top:52%}.preview-table{margin:0 18px 18px;overflow:hidden;border:1px solid rgb(255 255 255 / 12%);border-radius:8px;background:#ffffff12}.preview-table-head{display:flex;align-items:center;gap:8px;padding:11px 12px;border-bottom:1px solid rgb(255 255 255 / 10%);color:#dbe6f7;font-size:.8rem;font-weight:720}.preview-table-head strong{margin-left:auto;color:#77b7ff;font-size:.72rem}.preview-table table{min-width:0}.preview-table th,.preview-table td{padding:10px 12px;border-bottom:1px solid rgb(255 255 255 / 8%);color:#dbe6f7;font-size:.78rem}.preview-table th{background:#ffffff14;color:#9db4d2}.preview-table tr:last-child td{border-bottom:0}.topic-visual{position:relative;z-index:1;display:grid;min-width:0;grid-template-rows:auto minmax(150px,1fr) auto;gap:12px;overflow:hidden;padding:16px;border:1px solid rgb(214 219 232 / 82%);border-radius:8px;background:linear-gradient(145deg,#ffffffe5,#f3f8ffd1),#fff;box-shadow:0 36px 90px #1d1d1f1f,inset 0 1px #ffffffe5;-webkit-backdrop-filter:blur(20px) saturate(135%);backdrop-filter:blur(20px) saturate(135%)}.topic-visual:before{position:absolute;inset:0;pointer-events:none;content:"";background:radial-gradient(circle at 20% 20%,rgb(0 113 227 / 15%),transparent 28%),radial-gradient(circle at 80% 12%,rgb(0 167 216 / 12%),transparent 24%),linear-gradient(90deg,rgb(0 113 227 / 5%) 1px,transparent 1px),linear-gradient(rgb(0 113 227 / 4%) 1px,transparent 1px);background-size:auto,auto,34px 34px,34px 34px}.topic-visual:after{position:absolute;inset:auto 24px 78px;height:1px;pointer-events:none;content:"";background:linear-gradient(90deg,transparent,rgb(0 113 227 / 45%),transparent)}.visual-topline,.streak-visual,.rank-visual,.cohort-visual,.penetration-visual,.funnel-visual,.segment-visual,.visual-stages,.mini-table{position:relative;z-index:1}.visual-topline{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.visual-topline strong{display:block;max-width:320px;margin-top:4px;color:var(--ink);font-size:.94rem;line-height:1.35}.visual-topline>span{flex:0 0 auto;padding:7px 10px;border:1px solid rgb(0 113 227 / 16%);border-radius:999px;background:#edf6ffb8;color:var(--blue);font-size:.76rem;font-weight:760}.streak-visual,.rank-visual,.cohort-visual,.penetration-visual,.funnel-visual,.segment-visual{min-height:168px;border:1px solid rgb(214 219 232 / 70%);border-radius:8px;background:#ffffff94;box-shadow:inset 0 1px #ffffffd1}.streak-visual{overflow:hidden}.streak-visual svg{position:absolute;inset:24px 18px;width:calc(100% - 36px);height:calc(100% - 48px)}.streak-visual path{fill:none;stroke:var(--blue);stroke-width:5;stroke-linecap:round;stroke-dasharray:760;stroke-dashoffset:760;filter:drop-shadow(0 12px 16px rgb(0 113 227 / 20%));animation:draw-streak 2.4s ease-out forwards}.streak-node{position:absolute;display:grid;width:68px;height:38px;place-items:center;border:1px solid rgb(0 113 227 / 20%);border-radius:8px;background:#fff;color:var(--blue-deep);font-size:.82rem;font-weight:780;box-shadow:0 18px 40px #0071e31f;animation:visual-float 5s ease-in-out infinite}.streak-node.break{border-color:#a45f0038;background:#fff7e7;color:var(--amber)}.streak-1{left:6%;top:52%}.streak-2{left:25%;top:20%;animation-delay:.4s}.streak-3{left:44%;top:52%;animation-delay:.8s}.streak-4{right:25%;top:58%;animation-delay:1.2s}.streak-5{right:7%;top:26%;animation-delay:1.6s}.rank-visual{display:flex;align-items:end;justify-content:center;gap:12px;padding:20px 22px}.rank-bar{display:flex;width:clamp(48px,18%,68px);height:var(--bar-height);min-height:68px;flex-direction:column;justify-content:space-between;padding:12px 10px;border:1px solid rgb(0 113 227 / 18%);border-radius:8px;background:linear-gradient(180deg,#fff,#eaf4ff);color:var(--blue-deep);box-shadow:0 18px 42px #0071e31f;animation:visual-float 5.4s ease-in-out infinite}.rank-bar:nth-child(2){animation-delay:.3s}.rank-bar:nth-child(3){animation-delay:.6s}.rank-bar:nth-child(4){animation-delay:.9s}.rank-bar span{font-size:.72rem;font-weight:760}.rank-bar strong{font-size:1.35rem}.cohort-visual{display:grid;grid-template-columns:repeat(7,1fr);gap:7px;padding:20px}.cohort-visual span{min-height:20px;border-radius:6px;background:#eef1f6}.cohort-visual span.warm{background:#d7ebff}.cohort-visual span.hot{background:linear-gradient(180deg,#74b9ff,var(--blue));box-shadow:0 12px 24px #0071e32e;animation:soft-pulse 4s ease-in-out infinite}.penetration-visual{display:grid;grid-template-columns:90px 1fr 90px;gap:12px;align-items:center;padding:20px}.audience-ring{display:grid;width:90px;height:90px;place-items:center;border:10px solid #e5edf7;border-radius:999px;background:#fff;color:var(--muted)}.audience-ring.active{border-color:var(--blue);color:var(--blue-deep);box-shadow:0 22px 48px #0071e329}.audience-ring span{font-size:.74rem;font-weight:760}.audience-ring strong{font-size:1.7rem}.audience-bridge{height:3px;border-radius:999px;background:linear-gradient(90deg,#d7e4f4,var(--blue))}.dot-field{grid-column:1 / -1;display:grid;grid-template-columns:repeat(11,1fr);gap:8px}.dot-field i{height:8px;border-radius:999px;background:#dce2eb}.dot-field i.hit{background:var(--blue)}.funnel-visual{display:grid;align-content:center;gap:12px;padding:20px}.funnel-stage{display:grid;width:var(--stage-width);min-height:34px;place-items:center;justify-self:center;border:1px solid rgb(0 113 227 / 18%);border-radius:8px;background:linear-gradient(90deg,#fff,#eaf4ff);color:var(--blue-deep);font-size:.82rem;font-weight:780;box-shadow:0 14px 34px #0071e31a}.segment-visual{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;overflow:hidden;background:#d6dbe8c2}.segment-visual span{display:grid;min-height:82px;place-items:center;background:#ffffffc2;color:var(--muted-strong);font-size:.88rem;font-weight:760}.segment-visual .bubble{position:absolute;border-radius:999px;background:#0071e329;box-shadow:0 18px 44px #0071e32e;animation:visual-float 5s ease-in-out infinite}.bubble-a{width:54px;height:54px;left:19%;top:19%}.bubble-b{width:42px;height:42px;right:22%;top:35%;animation-delay:.7s}.bubble-c{width:62px;height:62px;left:45%;bottom:14%;animation-delay:1.3s}.visual-stages{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}.visual-stages div{display:flex;min-width:0;align-items:center;gap:7px;padding:8px 9px;border:1px solid rgb(214 219 232 / 76%);border-radius:8px;background:#ffffffa8;color:var(--muted)}.visual-stages div.active{border-color:#0071e338;background:var(--blue-soft);color:var(--blue-deep)}.visual-stages span{font-size:.7rem;font-weight:780}.visual-stages strong{overflow:hidden;font-size:.78rem;font-weight:780;text-overflow:ellipsis;white-space:nowrap}.mini-table{display:none;overflow:hidden;border:1px solid rgb(214 219 232 / 76%);border-radius:8px;background:#ffffffbd}.mini-table-head{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line-soft);color:var(--muted-strong);font-size:.8rem;font-weight:760}.mini-table table{min-width:0}.mini-table th,.mini-table td{padding:9px 12px;color:var(--muted-strong);font-size:.76rem}.mini-table th{background:#f8faff;color:#667085}.scenario-stage,.schema-strip,.step-lab,.answer-section,.practice-section{display:flex;flex-direction:column;gap:16px;padding-top:24px;border-top:1px solid var(--line-soft)}.section-heading{display:flex;min-width:0;align-items:center;justify-content:space-between;gap:14px}.section-heading svg{flex:0 0 auto;color:var(--blue)}.step-lab .section-heading{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end}.scenario-copy{display:grid;gap:18px}.scenario-lead{max-width:900px;margin:0;color:var(--ink);font-size:1.32rem;font-weight:650;line-height:1.52;letter-spacing:0;overflow-wrap:normal;word-break:keep-all}.scenario-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.scenario-grid article{min-width:0;padding:15px;border:1px solid var(--line-soft);border-radius:8px;background:#ffffffbd}.scenario-grid span{display:block;margin-bottom:7px;color:var(--muted);font-size:.78rem;font-weight:760}.scenario-grid p{margin:0;color:var(--ink);font-size:.92rem;line-height:1.62}.table-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.table-grid .data-card:only-child{grid-column:1 / -1}.data-card{min-width:0;overflow:hidden;border:1px solid var(--line-soft);border-radius:8px;background:var(--surface-solid);box-shadow:var(--shadow-soft)}.data-card.compact .data-card-header{padding:14px 15px 10px}.data-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;padding:18px 18px 12px}.data-card-header h3{margin:5px 0 0;color:var(--muted);font-size:.88rem;font-weight:520;line-height:1.58}.data-card-header svg{color:#9a9aa0}.table-scroll{overflow:auto;border-top:1px solid var(--line-soft)}table{width:100%;min-width:560px;border-collapse:collapse}th,td{padding:11px 13px;border-bottom:1px solid #eeeef2;text-align:left;vertical-align:top;white-space:nowrap}th{background:#fbfbfd;color:#3d3d42;font-size:.76rem;font-weight:760}th span,th small{display:block}th small{margin-top:3px;color:#97979e;font-size:.68rem;font-weight:650}td{color:#27272a;font-size:.86rem;font-variant-numeric:tabular-nums}tr:last-child td{border-bottom:0}.role-key{color:#0057b8;font-weight:760}.role-metric{color:#8a4d00;font-weight:690}.role-date{color:#315a7d}.role-derived{color:#28735e;font-weight:720}.null-value{color:#a1a1a6;font-style:italic}th.column-highlight,td.column-highlight{background:var(--green-soft)}tr.row-highlight td,td.row-highlight{background:#f7fbff}td.cell-highlight{background:#fff3d7;box-shadow:inset 0 0 0 1px #f1ce88}.highlight-note{margin:0;padding:10px 14px 12px;border-top:1px solid var(--line-soft);background:#fbfbfd;color:var(--muted-strong);font-size:.82rem;line-height:1.55}.step-track{display:grid;grid-column:1 / -1;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));width:100%;max-width:none;gap:10px;overflow:visible;padding:8px;border:1px solid rgb(214 219 232 / 76%);border-radius:8px;background:#ffffffa8;box-shadow:inset 0 1px #ffffffeb;scrollbar-width:thin}.step-track button{display:grid;grid-template-columns:34px minmax(0,1fr) auto;min-width:0;min-height:72px;align-items:center;gap:10px;padding:12px;border:1px solid transparent;border-radius:8px;background:#ffffffbd;color:var(--muted);text-align:left;box-shadow:0 10px 24px #1d1d1f0a;transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease}.step-track button:hover{transform:translateY(-2px);border-color:#0071e342;box-shadow:0 18px 38px #1d1d1f14}.step-track button span{display:grid;width:34px;height:34px;flex:0 0 auto;place-items:center;border-radius:999px;background:#ececf1;font-size:.75rem;font-weight:760}.step-track button strong{overflow:hidden;color:var(--ink);font-size:.94rem;font-weight:760;text-overflow:ellipsis;white-space:nowrap}.step-track button small{color:var(--blue);font-size:.74rem;font-weight:760}.step-track button.active{background:#1d1d1f;color:#fff;box-shadow:0 24px 52px #1d1d1f29}.step-track button.active span{background:var(--blue);color:#fff}.step-track button.active strong,.step-track button.active small{color:#fff}.step-heading-meta{display:inline-flex;align-items:center;gap:8px;justify-self:end;padding:7px 10px;border:1px solid rgb(0 113 227 / 18%);border-radius:999px;background:var(--blue-soft);color:var(--blue-deep);font-size:.8rem}.step-heading-meta span{font-weight:780}.step-heading-meta strong{font-weight:720}.step-stage{display:grid;grid-template-columns:minmax(220px,.38fr) minmax(0,1fr);gap:18px;align-items:start}.step-copy{min-width:0;padding:18px 0}.step-copy span{color:var(--blue);font-size:.78rem;font-weight:760}.step-copy h3{margin:8px 0 10px;color:var(--ink);font-size:1.7rem;font-weight:760;line-height:1.18;letter-spacing:0;overflow-wrap:normal;word-break:keep-all}.step-copy p{margin:0;color:var(--muted);line-height:1.72}.step-copy .change-note{margin-top:12px;padding-left:12px;border-left:2px solid var(--blue);color:var(--ink)}.step-controls{display:flex;gap:8px;margin-top:18px}.step-controls button{display:inline-flex;align-items:center;gap:7px;min-height:36px;padding:0 12px;border:1px solid rgb(214 219 232 / 82%);border-radius:8px;background:#fff;color:var(--ink);font-size:.84rem;font-weight:720}.step-controls button:disabled{cursor:not-allowed;opacity:.45}.step-main{display:flex;min-width:0;flex-direction:column;gap:14px}.code-wrap{min-width:0;overflow:hidden;border:1px solid #242c3a;border-radius:8px;background:var(--code);box-shadow:var(--shadow-soft)}.code-label{display:flex;align-items:center;justify-content:flex-start;gap:8px;padding:10px 14px;border-bottom:1px solid var(--code-line);color:#b9c2d0;font-size:.78rem;font-weight:720}.code-label svg{color:#8bbcff}.code-block{min-width:0;max-width:100%;margin:0;overflow:auto;background:var(--code);color:#eef4ff}.code-block code{display:block;min-width:max-content;padding:16px;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:.82rem;line-height:1.66;white-space:pre}.ghost-button,.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:38px;border-radius:8px;font-size:.88rem;font-weight:720;transition:transform .16s ease,box-shadow .16s ease,background .16s ease}.ghost-button{border:1px solid var(--line);background:#ffffffb3;color:var(--ink);padding:0 13px}.primary-button{width:fit-content;border:1px solid #1b1b1d;background:#1d1d1f;color:#fff;padding:0 15px}.ghost-button:hover,.primary-button:hover{transform:translateY(-1px);box-shadow:var(--shadow-soft)}.practice-prompt{margin:0;color:var(--ink);font-size:1.02rem;line-height:1.72}.practice-answer{display:grid;gap:12px}.practice-answer p{margin:0;padding:14px;border:1px solid var(--line-soft);border-radius:8px;background:var(--surface-solid);color:var(--muted-strong);line-height:1.7}.summary-panel{gap:12px}.summary-block{min-width:0;padding:16px;border:1px solid var(--line-soft);border-radius:8px;background:#ffffffb8;box-shadow:var(--shadow-soft)}.intro-block{background:linear-gradient(180deg,#ffffffdb,#f6faffd1),var(--surface-solid)}.intro-block p:last-child{margin:9px 0 0;color:var(--muted);line-height:1.65}.summary-title{display:flex;align-items:center;gap:8px;margin-bottom:12px}.summary-title svg{color:var(--blue)}.summary-title h3{margin:0;color:var(--ink);font-size:.94rem;font-weight:760}.function-list{display:grid;gap:10px}.function-list article{display:grid;gap:6px;padding-bottom:10px;border-bottom:1px solid var(--line-soft)}.function-list article:last-child{padding-bottom:0;border-bottom:0}.function-list strong{color:var(--ink);font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:.88rem}.function-list p,.function-list span,.function-list small,.verbal-block p,.source-card p{margin:0;color:var(--muted);font-size:.84rem;line-height:1.62}.function-list span{color:var(--ink)}.function-list small{color:#88888f}.verbal-block p{color:var(--ink);font-size:.9rem}.mistake-list{display:grid;gap:8px;padding:0;margin:0;list-style:none}.mistake-list li{display:grid;grid-template-columns:16px minmax(0,1fr);gap:6px;color:var(--muted-strong);font-size:.86rem;line-height:1.55}.mistake-list svg{margin-top:3px;color:var(--amber)}.source-card{display:grid;gap:12px}.source-card article{display:grid;gap:6px;padding-top:12px;border-top:1px solid var(--line-soft)}.source-card article:first-of-type{padding-top:0;border-top:0}.source-card article>span{width:fit-content;padding:3px 7px;border-radius:999px;background:var(--green-soft);color:var(--green);font-size:.7rem;font-weight:760}.source-card article.pending>span{background:var(--amber-soft);color:var(--amber)}.source-card a,.source-card strong{display:inline-flex;align-items:center;gap:6px;color:var(--ink);font-size:.88rem;font-weight:720;line-height:1.45;text-decoration:none}.source-card a:hover{color:var(--blue)}@media(max-width:1560px){.workspace{grid-template-columns:248px minmax(0,1fr)}.stats-foundation-grid,.inference-grid,.diagnostic-grid,.stage-detail-grid,.interview-drill-grid,.review-template{grid-template-columns:repeat(2,minmax(0,1fr))}.ab-workflow,.experiment-map,.agent-process-list{grid-template-columns:repeat(3,minmax(0,1fr))}.agent-stage-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.summary-panel{position:static;grid-column:2;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));max-height:none;overflow:visible}}@media(max-width:1180px){.agent-hero{grid-template-columns:1fr}.stats-step-hero{grid-template-columns:1fr;min-height:auto}.stats-step-hero.agent-step-hero{grid-template-columns:1fr}.agent-step-hero .stats-step-title{max-width:none}.agent-stage-visual{min-height:auto}.agent-stage-image{aspect-ratio:16 / 9;min-height:clamp(300px,48vw,460px)}.stats-step-context,.stats-deep-grid,.stats-knowledge-grid,.stats-formula-list,.stats-stage-qa,.stats-teaching-layout,.stats-case-card,.stats-interview-deep-grid,.agent-student-grid,.agent-process-list{grid-template-columns:1fr}.stats-deep-card,.stats-formula-list article,.stats-stage-qa article,.stats-interview-deep-grid article,.agent-student-card{min-height:auto}.stats-hero,.decision-grid,.decision-snapshot,.concept-card,.concept-card.reverse{grid-template-columns:1fr}.concept-card.reverse .concept-copy,.concept-card.reverse figure{order:initial}.book-reader{grid-template-columns:44px minmax(0,1fr) 44px;gap:12px}.book-turn{width:44px;height:44px}.agent-stage-grid,.agent-visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-hero{grid-template-columns:1fr}.lesson-title{justify-content:start}.topic-visual{min-height:340px}}@media(max-width:1040px){.home-shell{background-position:58% center}.home-overlay{background:linear-gradient(90deg,#ffffffe0,#ffffffa3 36%,#fff0 70%),linear-gradient(180deg,#ffffff2e,#fff0 58%,#e2fff42e)}.home-copy{width:min(560px,58vw)}.agent-nav{grid-template-columns:1fr;justify-items:start}.agent-nav-title{justify-self:start;text-align:left}.agent-main{padding:28px 20px 56px}.stats-curriculum-workspace,.stats-curriculum-workspace.agent-curriculum-workspace{grid-template-columns:1fr;padding:24px 20px 56px}.stats-step-rail{position:static;max-height:none;overflow:visible}.stats-step-list{grid-template-columns:repeat(2,minmax(0,1fr))}.agent-hero,.stats-hero{min-height:auto;padding:30px}.ab-workflow,.experiment-map,.agent-process-list{grid-template-columns:repeat(2,minmax(0,1fr))}.ab-workflow article:not(:last-child):after,.experiment-stage:not(:last-child):after,.agent-process-list article:not(:last-child):after{display:none}.book-reader{grid-template-columns:1fr}.book-frame{order:1}.book-turn{position:sticky;bottom:18px;z-index:8;order:2}.book-turn-left{justify-self:start;margin-left:12px}.book-turn-right{justify-self:end;margin-top:-62px;margin-right:12px}.topbar{grid-template-columns:1fr}.workspace{grid-template-columns:1fr;padding:20px}.rail,.summary-panel{position:static;grid-column:auto;max-height:none;overflow:visible}.topic-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-hero,.step-stage{grid-template-columns:1fr}.lesson-hero{min-height:auto;padding:30px}.lesson-title h2{font-size:clamp(1.95rem,4.6vw,2.45rem)}.hero-preview{min-height:360px}.scenario-grid,.summary-panel{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:720px){.home-shell{min-height:100svh;background-position:62% center}.home-overlay{background:linear-gradient(180deg,#ffffffe0,#ffffffb3 48%,#ffffff38),linear-gradient(90deg,#ffffff9e,#ffffff29)}.home-copy{width:100%;min-height:100svh;justify-content:flex-start;padding:34px 22px}.home-brand{margin-bottom:42px}.home-copy h1{max-width:320px;font-size:2.72rem}.home-subtitle{max-width:350px;font-size:.96rem}.home-subtitle span{white-space:normal}.home-module-grid{width:min(100%,340px);grid-template-columns:1fr;margin-top:28px}.module-card{width:100%}.coming-soon{max-width:340px;border-radius:12px;line-height:1.5}.agent-main,.stats-curriculum-workspace,.stats-curriculum-workspace.agent-curriculum-workspace{padding:20px 14px 44px}.stats-step-rail{padding:18px}.stats-step-list{grid-template-columns:1fr}.stats-step-button{grid-template-columns:44px minmax(0,1fr) 18px}.stats-step-index{width:44px;height:44px}.stats-step-hero{padding:22px}.stats-step-title h1{font-size:2.22rem}.stats-step-title>p{font-size:.96rem}.stats-stage-tags{display:none}.stats-stage-visual{padding:14px}.stats-visual-canvas{min-height:230px}.hypothesis-card{width:120px}.hypothesis-card.base{left:16px}.hypothesis-card.exp{right:16px}.hypothesis-result{right:16px;left:16px;grid-template-columns:auto 1fr}.monitor-visual,.rollout-visual{grid-template-columns:repeat(2,minmax(0,1fr))}.metric-row{grid-template-columns:52px 76px minmax(0,1fr)}.agent-hero,.stats-hero{padding:22px}.stats-hero h1{font-size:2.26rem}.stats-hero h1 span{white-space:normal}.stats-hero-copy>p:not(.agent-kicker){font-size:.96rem}.stats-mini-metrics,.stats-foundation-grid,.inference-grid,.ab-workflow,.diagnostic-grid,.experiment-map,.stage-detail-grid,.interview-drill-grid,.review-template,.stats-teaching-layout,.stats-case-card,.stats-interview-deep-grid,.agent-student-grid,.agent-process-list{grid-template-columns:1fr}.stats-foundation-card,.inference-card,.diagnostic-grid article,.ab-workflow article,.experiment-stage,.stage-detail-card,.interview-drill-grid article,.review-template article,.stats-interview-deep-grid article,.agent-student-card{min-height:auto}.stats-longread-card,.stats-platform-card,.stats-case-card{padding:18px}.agent-stage-visual{min-height:auto;padding:14px}.agent-stage-image{width:100%;height:clamp(220px,58vw,260px);min-height:0;aspect-ratio:auto}.agent-stage-image img{min-height:0;transform:scale(1.025)}.agent-stage-visual .visual-stages{grid-template-columns:repeat(2,minmax(0,1fr))}.agent-hero h1{font-size:2.26rem}.agent-hero h1 span{white-space:normal}.agent-hero-copy>p:not(.agent-kicker){font-size:.96rem}.agent-stage-grid,.agent-visual-grid{grid-template-columns:1fr}.book-toolbar{align-items:flex-start;flex-wrap:wrap;padding:13px 14px;font-size:.78rem}.book-toolbar span{line-height:1.35}.book-single{padding:12px}.concept-card{padding:16px}.concept-copy h3{font-size:1.28rem}.concept-copy p,.concept-copy li{font-size:.88rem}.reader-modal-body{grid-template-columns:1fr;gap:10px}.reader-modal-body img{width:min(100%,520px);height:auto;max-height:78vh;order:1}.reader-modal-turn{position:fixed;bottom:18px;z-index:2;width:46px;height:46px}.reader-modal-turn:first-child{left:18px}.reader-modal-turn:last-child{right:18px}.agent-visual-grid figure.wide{grid-column:auto}.agent-stage-card{min-height:auto}.app-shell{overflow-x:hidden}.topbar{padding:14px}.ai-entry{width:fit-content}.topbar-meta{justify-self:start;width:fit-content}.workspace{display:flex;flex-direction:column;width:100%;max-width:100vw;overflow-x:hidden;padding:16px 14px 32px}.rail,.lesson-panel,.summary-panel{width:calc(100vw - 28px);max-width:calc(100vw - 28px)}.lesson-hero{width:100%;max-width:100%;padding:22px}.lesson-title h2{max-width:100%;font-size:2.1rem;line-height:1.12;overflow-wrap:anywhere;word-break:break-all;white-space:normal}.chapter-kicker{grid-template-columns:1fr;gap:6px}.chapter-kicker i{display:none}.hero-insight{padding:12px 13px}.scenario-lead{max-width:100%;font-size:1.16rem;overflow-wrap:anywhere;word-break:break-all}.lesson-title p,.scenario-grid p,.practice-prompt,.step-copy p{overflow-wrap:anywhere;word-break:break-all}.table-grid,.scenario-grid,.summary-panel{grid-template-columns:1fr}.topic-list{display:flex;min-width:0;max-width:100%;flex-direction:row;gap:10px;overflow-x:auto;padding-bottom:4px}.topic-button{flex:0 0 268px;min-width:0}.section-heading{align-items:flex-start;flex-direction:column}.step-track{width:100%}.step-track button{min-width:112px}.ghost-button,.primary-button{width:100%}table{min-width:640px}}@media(max-height:760px)and (min-width:1041px){.rail{gap:10px;padding:12px}.rail-header{padding-bottom:4px}.topic-button{min-height:54px;padding:8px}.topic-copy{gap:2px}.source-policy{display:none}.lesson-hero{min-height:390px;padding:26px}.topic-visual{grid-template-rows:auto minmax(132px,1fr) auto}.streak-visual,.rank-visual,.cohort-visual,.penetration-visual,.funnel-visual,.segment-visual{min-height:148px}}
