@charset "UTF-8";
:root{--night:#0a1520;--panel:#13232f;--ink:#142b36;--muted:#58707d;--line:#d9e3e9;--mint:#6ee0c2;--teal:#087963;--copper:#eaae73;--paper:#fff;--paper2:#f3f6f8;--topbar:78px;--radius:18px;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:var(--ink);background:var(--night);font-synthesis:none;scroll-behavior:smooth;scroll-padding-top:100px}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button{color:inherit}a{color:inherit;text-underline-offset:5px}img,video{display:block;max-width:100%}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #18aa89;outline-offset:5px}h1,h2,h3,p,figure,blockquote{margin:0}h1,h2,h3{font-weight:600}p{line-height:1.85}button{border:0}strong,b{font-weight:600}[hidden]{display:none!important}.wrap{width:min(1216px,calc(100% - 112px));margin-inline:auto}.chapter{scroll-margin-top:var(--topbar);padding:92px 0 70px}.eyebrow{font-size:.79rem;font-weight:650;letter-spacing:.16em;color:var(--teal);line-height:1.5}.paper{background:var(--paper)}.alternate{background:var(--paper2)}.opening,.dark-section,.download-section{color:#f0f6fa;background:var(--night)}.opening .eyebrow,.dark-section .eyebrow,.download-section .eyebrow{color:var(--mint)}.section-heading{max-width:850px;margin-bottom:42px}.section-heading h2{font-size:clamp(1.8rem,3.3vw,2.75rem);line-height:1.35;letter-spacing:-.04em;margin:13px 0 17px}.section-heading>p:last-child{font-size:1.1rem;color:var(--muted);max-width:740px}.dark-section .section-heading>p:last-child,.download-section .section-heading>p:last-child{color:#adbfca}.fineprint{color:var(--muted);font-size:.85rem;line-height:1.85}.dark-section .fineprint{color:#a9bcc7}
.skip-link{position:absolute;top:-100px;left:16px;z-index:1000;background:#fff;color:#112b36;padding:12px}.skip-link:focus{top:12px}.topbar{height:var(--topbar);position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - 1340px)/2));gap:24px;color:#eaf2f6;background:rgba(10,21,32,.96);backdrop-filter:blur(16px);border-bottom:1px solid #263b48}.brand{text-decoration:none;display:flex;gap:13px;align-items:center;font-size:.88rem;font-weight:550;white-space:nowrap}.brand small{display:block;font-size:.7rem;letter-spacing:.09em;color:#9db5c2;font-weight:400;margin-top:4px}.brand-mark{font-size:1.4rem;letter-spacing:-.09em;font-weight:800;border:1px solid #46616d;border-radius:8px;padding:5px 9px}.brand-mark span{font-size:.85rem;letter-spacing:-.03em;color:var(--mint)}.chapter-menu{position:relative;width:230px;max-width:40vw;font-size:.86rem}.chapter-menu summary{list-style:none;display:flex;justify-content:space-between;align-items:center;cursor:pointer;padding:12px 15px;background:#172a36;border-radius:8px;gap:12px}.chapter-menu summary::-webkit-details-marker{display:none}.chapter-menu nav{position:absolute;top:calc(100% + 10px);background:#142531;border:1px solid #38505f;border-radius:12px;padding:8px;width:100%;box-shadow:0 16px 40px #0004}.chapter-menu nav a{display:block;padding:10px 12px;text-decoration:none;border-radius:5px}.chapter-menu nav a:hover{background:#243c49;color:var(--mint)}.top-download{font-size:.84rem;text-decoration:none;white-space:nowrap;border:1px solid #48616d;border-radius:100px;padding:10px 17px}.top-download span{margin-left:15px;color:var(--mint)}.reading-track{position:absolute;bottom:-1px;left:0;width:100%;height:2px;background:#29424f}.reading-track>div{height:100%;width:0;background:var(--mint)}.chapter-rail{position:fixed;left:18px;top:50%;transform:translateY(-45%);display:flex;flex-direction:column;gap:12px;z-index:30;mix-blend-mode:difference}.chapter-rail a{color:#94b2c0;font:500 .75rem/1 monospace;text-decoration:none;padding:8px 7px;position:relative;border-radius:4px}.chapter-rail a.active{color:#9affdb;background:#274437}.chapter-rail a span{position:absolute;left:34px;background:#193441;color:#fff;white-space:nowrap;padding:7px 11px;top:0;opacity:0;pointer-events:none}.chapter-rail a:hover span,.chapter-rail a:focus-visible span{opacity:1}
.opening{padding-top:50px;padding-bottom:30px}.opening-heading{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:end;margin-bottom:35px}.opening h1{font-size:clamp(2.5rem,4.8vw,4.3rem);letter-spacing:-.04em;line-height:1.2;margin-top:14px}.opening-intro{padding-bottom:6px}.opening-intro>p{font-size:1.02rem;color:#b5c9d4;line-height:1.9;margin-bottom:23px}.baseline-label{display:inline-flex;gap:10px;align-items:center;font-size:.78rem;color:#adc3ce;line-height:1.6}.baseline-label>span{display:inline-block;width:6px;height:6px;border-radius:100%;background:var(--mint)}.showcase-stage{display:grid;grid-template-columns:minmax(0,2.15fr) minmax(260px,1fr);gap:22px}.cinema{background:#0b1822;border:1px solid #304654;border-radius:var(--radius);overflow:hidden;min-width:0}.video-label{display:flex;justify-content:space-between;padding:14px 19px;font-size:.75rem;color:#a9c0cc;gap:16px;background:#122431}.video-label>span:first-child{color:var(--mint)}.cinema video{width:100%;aspect-ratio:4/3;object-fit:contain;background:#07131c;max-height:490px}.video-controls{display:flex;align-items:flex-start;gap:17px;padding:16px 18px;background:#132531}.video-controls button{flex:none;background:#c3f6e5;color:#09382d;border-radius:6px;padding:9px 13px;font-size:.8rem;min-height:38px}.video-controls>span{font-size:.82rem;color:#adc4cf;line-height:1.7}.stage-side{display:flex;flex-direction:column;justify-content:center;gap:22px}.video-tabs{display:flex;flex-direction:column;gap:9px}.video-tabs button{display:flex;align-items:flex-start;gap:13px;text-align:left;border:1px solid #2b414e;padding:21px 18px;border-radius:10px;background:#12232e;color:#d7e5eb;transition:background .2s,border-color .2s}.video-tabs button>span{font:400 .8rem/1.5 monospace;color:#8da7b5;padding-top:3px}.video-tabs button>div{flex:1}.video-tabs button strong{display:block;font-size:1rem}.video-tabs button small{display:block;color:#91adbc;font-size:.78rem;line-height:1.6;margin-top:7px}.video-tabs button b{font-size:1.1rem;font-weight:400}.video-tabs button[aria-pressed=true]{border-color:#83c9b6;background:#193b39}.video-tabs button[aria-pressed=true]>span,.video-tabs button[aria-pressed=true] b{color:var(--mint)}.stage-note{border-left:2px solid var(--copper);padding:3px 0 3px 18px}.stage-note strong{color:var(--copper);font-size:.8rem}.stage-note p{font-size:.8rem;color:#9eb6c4;margin-top:8px}.gallery-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin:55px 0 23px}.gallery-heading h2{font-size:1.45rem}.gallery-heading p{font-size:.82rem;color:#93aebb}.artifact-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.artifact{position:relative;min-width:0;background:#132632;color:#eff4f7;border:1px solid #294552;border-radius:11px;padding:0 0 18px;overflow:hidden;text-align:left;transition:transform .2s,border-color .2s}.artifact:hover{transform:translateY(-5px);border-color:#74b6a8}.artifact img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#3c4d5a}.artifact.light-art img{object-fit:contain;background:#eff4f7;padding:10px}.artifact-tag{display:block;font-size:.69rem;letter-spacing:.09em;color:var(--mint);margin:16px 16px 8px}.artifact strong{display:block;margin:0 16px;font-size:.95rem;line-height:1.5}.artifact small{display:flex;justify-content:space-between;margin:9px 16px 0;color:#99b1bd;gap:9px;font-size:.71rem;line-height:1.7}.artifact small span{color:var(--mint)}.next-cue{display:flex;justify-content:space-between;padding:30px 0 8px;text-decoration:none;color:#a7c2ce;font-size:.88rem}.next-cue span{font-size:1.6rem;color:var(--mint)}
.baseline-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center}.baseline-visual{background:#12202b;border-radius:var(--radius);overflow:hidden}.baseline-visual>img{width:100%;aspect-ratio:4/3;object-fit:contain}.dimension-line{display:grid;grid-template-columns:repeat(3,1fr);padding:20px 16px;gap:12px;border-top:1px solid #3a4a57;color:#b6c6cf;font-size:.74rem}.dimension-line b{display:block;color:#f2f7fa;font-size:.82rem;margin-top:6px}.delivery-list>div{padding:21px 0;border-bottom:1px solid var(--line)}.delivery-list>div:first-child{padding-top:0}.state{display:inline-block;font-size:.75rem;line-height:1.45;letter-spacing:.025em;color:#4d6572}.state.done,.state.confirmed{color:var(--teal)}.state.pending{color:#946218}.delivery-list h3{font-size:1.18rem;margin:9px 0}.delivery-list p{font-size:.94rem;color:var(--muted)}.important-line{margin:34px 0 0;padding:22px 26px;display:grid;grid-template-columns:100px 1fr;gap:15px;background:#fff7eb;border-left:3px solid #b9843c;font-size:.9rem}.important-line>strong{color:#8c622c;padding-top:4px}.important-line p{color:#5b503f}.section-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);gap:20px;margin-top:40px;padding-top:24px;font-size:.9rem}.section-bottom>a{text-decoration:none;color:var(--teal);line-height:1.65}.dark-section .section-bottom{border-color:#354b59}.dark-section .section-bottom>a{color:var(--mint)}.text-button{background:transparent;color:var(--teal);font-size:.88rem;padding:4px 0;text-align:left;text-underline-offset:5px;min-height:36px}.text-button:hover{text-decoration:underline}.dark-section .text-button,.download-section .text-button{color:var(--mint)}
.requirements-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}blockquote{padding:15px 0 15px 27px;border-left:2px solid #b5c9d2;font-size:1.48rem;line-height:1.8;letter-spacing:-.025em}blockquote>span{display:block;font-size:.8rem;color:var(--muted);margin-bottom:13px;letter-spacing:.05em}blockquote footer{font-size:.91rem;line-height:1.8;letter-spacing:0;color:var(--muted);margin-top:25px}.power-explorer{background:#fff;padding:30px;border:1px solid var(--line);border-radius:var(--radius)}.segmented{display:flex;gap:5px;border:1px solid #cfdfe5;background:#edf2f5;border-radius:9px;padding:5px;margin-top:17px}.segmented button{flex:1;border-radius:5px;background:transparent;padding:12px 8px;font-size:.9rem}.segmented button[aria-pressed=true]{background:var(--night);color:#edfff9}.power-equation{display:flex;align-items:baseline;flex-wrap:wrap;gap:12px;margin:30px 0 18px;font-variant-numeric:tabular-nums}.power-equation>span{font-size:2rem}.power-equation strong{font-size:3.3rem;line-height:1;color:var(--teal);font-weight:550;letter-spacing:-.06em}.power-equation small{font-size:.9rem;color:var(--muted)}.power-explorer>p{font-size:.92rem;color:var(--muted);min-height:3.7em}.power-bar{position:relative;background:#e5edef;height:5px;margin:33px 0 17px}.power-bar>div{width:71.43%;height:100%;background:var(--teal);transition:width .35s}.power-bar>span{position:absolute;right:0;top:10px;font-size:.7rem;color:var(--muted)}.decision-row{margin:30px 0;display:flex;align-items:flex-start;gap:20px;padding:22px 24px;background:#e8f5f0;border-radius:10px}.decision-row>span{flex:none;padding-top:5px}.decision-row>p{font-size:1rem;line-height:1.75}.read-more{padding:21px 0;border-top:1px solid #cddde4;border-bottom:1px solid #cddde4;margin-top:27px}.read-more summary{cursor:pointer;font-size:1rem;font-weight:550;line-height:1.7}.read-more p{margin:18px 0 0;font-size:.94rem;color:var(--muted)}.insight{display:grid;grid-template-columns:140px 1fr;align-items:start;gap:23px;margin-top:36px;padding:28px 0 0;border-top:2px solid var(--teal)}.insight>span{font-size:.78rem;letter-spacing:.08em;color:var(--teal);padding-top:5px}.insight>p{font-size:1.1rem;line-height:1.75;font-weight:500}
.tool-flow{display:grid;grid-template-columns:1fr 50px 1fr 50px 1fr;gap:0;align-items:center}.tool-flow button{text-align:left;background:#f3f7f9;border:1px solid #cedde4;border-radius:12px;padding:24px;display:grid;grid-template-columns:28px 1fr;gap:7px 14px}.tool-flow button>span{grid-row:span 2;color:#829aa7;font-size:.78rem;padding-top:3px}.tool-flow button strong{font-size:1.4rem;line-height:1.1}.tool-flow button small{font-size:.83rem;color:var(--muted);line-height:1.7}.tool-flow button[aria-pressed=true]{background:var(--night);color:#fff;border-color:var(--night)}.tool-flow button[aria-pressed=true] small,.tool-flow button[aria-pressed=true]>span{color:#9dbdbb}.flow-arrow{text-align:center;font-size:1.4rem;color:#8da6b3}.tool-detail{display:grid;grid-template-columns:1fr 1.35fr;gap:40px;padding:29px;border:1px solid var(--line);border-radius:12px;margin-top:20px;background:#fafcfd}.tool-detail h3{font-size:1.1rem;margin-bottom:12px}.tool-detail p{font-size:.94rem;color:var(--muted)}.tool-detail dl{margin:0;display:grid;gap:12px}.tool-detail dl>div{display:grid;grid-template-columns:60px 1fr;gap:12px}.tool-detail dt{font-size:.8rem;color:var(--teal);padding-top:3px}.tool-detail dd{margin:0;font-size:.94rem;line-height:1.75}.timeline-heading{margin:54px 0 24px;display:flex;align-items:baseline;justify-content:space-between;gap:20px}.timeline-heading h3{font-size:1.5rem}.timeline-heading p{font-size:.85rem;color:var(--muted)}.timeline{display:grid;grid-template-columns:repeat(6,1fr);gap:7px}.timeline button{text-align:left;border:1px solid var(--line);border-radius:8px;background:#fff;padding:18px 14px;position:relative}.timeline button small{display:block;font-size:.75rem;color:var(--muted);margin-bottom:10px}.timeline button strong{display:block;font-size:.86rem;line-height:1.6;white-space:normal}.timeline button[aria-pressed=true]{border-color:var(--teal);background:#edf7f4}.timeline button[aria-pressed=true] small{color:var(--teal)}.timeline-detail{border-left:2px solid var(--teal);padding:10px 0 10px 21px;margin:25px 0 20px}.timeline-detail h4{font-size:1.03rem;margin:0 0 10px;font-weight:600}.timeline-detail p{color:var(--muted);font-size:.93rem}
.dark-section{background:#0e202c}.case-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:35px 0}.case-tabs button{background:#172d3a;color:#c2d4dd;padding:19px 18px;border:1px solid #35505f;border-radius:9px;text-align:left;font-size:.9rem;line-height:1.7;display:flex;gap:13px}.case-tabs button>span{font:500 1rem/1.7 monospace;color:#8dadb9}.case-tabs button[aria-pressed=true]{background:#ddfff3;color:#133c33;border-color:#ddfff3}.case-tabs button[aria-pressed=true]>span{color:#167965}.case-detail h3{font-size:1.65rem;margin-bottom:11px;line-height:1.5}.case-lead{color:#a9c1ce;max-width:870px;margin-bottom:28px;font-size:1.02rem}.case-images{display:grid;grid-template-columns:1fr 1fr;gap:19px}.case-figure{margin:0;border:1px solid #34515f;border-radius:12px;overflow:hidden;background:#142a37}.case-figure button{width:100%;padding:0;background:#3d4c59;display:block}.case-figure img{height:auto;aspect-ratio:4/3;object-fit:contain;width:100%}.case-figure figcaption{padding:14px 19px;color:#b4cbd5;font-size:.82rem;line-height:1.75}.case-figure figcaption>strong{display:block;color:#e8f5f9;margin-bottom:6px;font-size:.85rem}.case-flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:32px}.case-flow>div{padding-top:17px;border-top:1px solid #3c5462}.case-flow h4{color:var(--mint);font-size:.82rem;margin:0 0 12px;font-weight:500}.case-flow p{font-size:.95rem;color:#c3d6df}.case-boundary{margin:25px 0;background:#2e302d;border-left:2px solid var(--copper);padding:18px 22px;color:#decab0;font-size:.87rem;line-height:1.8}.case-lesson{margin:26px 0;display:flex;gap:22px;line-height:1.8;align-items:flex-start}.case-lesson span{color:var(--mint);font-size:.8rem;flex:none;padding-top:4px}.case-lesson p{font-size:1.08rem}.case-detail details{border-top:1px solid #35505f;border-bottom:1px solid #35505f;padding:16px 0;margin-top:22px;font-size:.92rem}.case-detail summary{cursor:pointer}.case-detail details p{margin-top:15px;color:#adc4d0}.case-detail details .case-figure{margin-top:20px;max-width:570px}.validation-layout{display:grid;grid-template-columns:1fr 1.25fr;gap:32px}.validation-ladder{display:flex;flex-direction:column;gap:11px}.validation-ladder button{background:#f6f8fa;padding:19px 22px;border:1px solid #d5e0e6;border-radius:9px;text-align:left;display:flex;justify-content:space-between;gap:15px;align-items:center}.validation-ladder button strong{font-size:1rem}.validation-ladder button span{font-size:.75rem;color:var(--teal);white-space:nowrap}.validation-ladder button[aria-pressed=true]{background:var(--night);border-color:var(--night);color:#fff}.validation-ladder button[aria-pressed=true] span{color:var(--mint)}.validation-ladder button[data-level=physical] span{color:#9a6830}.validation-detail{border:1px solid var(--line);border-radius:12px;padding:31px;background:#f9fbfc}.validation-detail h3{font-size:1.35rem;margin-bottom:22px}.validation-detail .label{font-size:.78rem;color:var(--teal);display:block;margin:18px 0 8px}.validation-detail p{font-size:.97rem;color:#415e6d}.validation-detail .cannot{border-top:1px solid var(--line);padding-top:20px;margin-top:22px;color:#8b632d}.quiz{border:1px solid var(--line);border-radius:14px;padding:29px;margin-top:39px;background:#fff}.quiz .eyebrow{font-size:.74rem}.quiz h3{font-size:1.2rem;margin:10px 0 23px;line-height:1.7}.quiz-options{display:grid;grid-template-columns:1fr 1.4fr 1fr;gap:10px}.quiz-options button{text-align:left;background:#f2f6f8;padding:15px;border-radius:8px;border:1px solid #d3e1e7;font-size:.88rem;line-height:1.75}.quiz-options button[aria-pressed=true]{background:#e3f4ed;border-color:#4baf94}.quiz #quiz-feedback{font-size:.9rem;color:var(--teal);margin-top:21px;min-height:1.8em}
.handoff-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px}.handoff-grid article{padding:27px;background:#fff;border:1px solid #d6e2e8;border-radius:11px}.handoff-no{color:#8dafbb;font:400 1.5rem/1 monospace}.handoff-grid h3{margin:25px 0 16px;font-size:1.19rem}.handoff-grid article>p{font-size:.96rem;color:var(--muted)}.handoff-grid details{margin-top:25px;border-top:1px solid var(--line);padding-top:20px;font-size:.85rem;line-height:1.75}.handoff-grid summary{cursor:pointer;color:var(--teal)}.handoff-grid details p{margin-top:14px;color:var(--muted)}.limits-strip{margin-top:30px;border-top:1px solid #cadde4;padding:25px 0 0;display:grid;grid-template-columns:210px 1fr;gap:30px}.limits-strip>strong{font-size:.92rem;padding-top:3px}.limits-strip>p{font-size:.94rem;color:var(--muted)}.limits-strip b{color:var(--ink)}.product-map>div{display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:35px;padding:23px 18px;border-bottom:1px solid var(--line)}.product-map .map-labels{font-size:.79rem;color:var(--muted);padding-top:0;padding-bottom:14px}.product-map p{font-size:.96rem;line-height:1.75;color:var(--muted)}.product-map h3{font-size:1.04rem;font-weight:550;color:var(--teal);line-height:1.65}.mvp{margin-top:45px;display:grid;grid-template-columns:1.15fr 1fr;gap:45px;padding:36px;background:#edf5f4;border:1px solid #c7dfd7;border-radius:15px}.mvp h3{font-size:1.45rem;line-height:1.55;margin:17px 0}.mvp p{font-size:.96rem;color:var(--muted)}.mvp ol{margin:0;padding:0;list-style:none;display:grid;gap:22px}.mvp li{display:grid;grid-template-columns:45px 1fr;gap:17px;font-size:.94rem;line-height:1.85}.mvp li strong{font-size:.79rem;color:var(--teal);padding-top:3px}.takeaway{margin-top:45px;text-align:center;padding:28px 10px}.takeaway>p{font-size:.84rem;color:var(--muted);margin-bottom:13px}.takeaway strong{font-size:clamp(1rem,2vw,1.3rem);line-height:2.1}.takeaway strong span{color:var(--teal);padding:0 9px}.download-section{padding-bottom:60px;background:#0a1822}.download-card{border:1px solid #3d5967;border-radius:16px;padding:42px;display:grid;grid-template-columns:1.65fr 1fr;gap:50px;background:#122733}.download-card h3{font-size:1.7rem;line-height:1.5;margin:19px 0 18px}.download-card p{font-size:1rem;color:#b0c7d1}.download-card ul{padding-left:20px;font-size:.88rem;color:#b3cad4;line-height:2;margin-top:20px}.download-action{display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:19px}.download-action>span:first-child{font-size:.9rem;color:#a9c2cf}.primary-button{display:flex;align-items:center;justify-content:space-between;padding:19px 24px;border-radius:8px;background:#acf0da;color:#0a3a2d;text-decoration:none;font-size:1.04rem;font-weight:600;line-height:1.7}.primary-button:hover{background:#d1ffed}.primary-button>span{font-size:1.3rem}.download-secondary{font-size:.84rem;color:#adcbda;text-decoration:none;line-height:1.8}.download-action .text-button{font-size:.8rem;min-height:24px}.download-action #checksum-feedback{font-size:.76rem;color:var(--mint);overflow-wrap:anywhere}.download-details{margin-top:32px;border-block:1px solid #314b5b;padding:24px 0;line-height:1.8}.download-details summary{cursor:pointer;font-size:.98rem}.download-details p{font-size:.93rem;color:#aac2cf;margin-top:22px}.download-details code{font-size:.85rem;color:#cdeadd;overflow-wrap:anywhere}.download-foot{display:flex;gap:30px;justify-content:space-between;margin-top:35px;flex-wrap:wrap;font-size:.85rem}.download-foot a{color:#adc6d2;text-decoration:none}.site-footer{background:#071019;color:#809fac;padding:30px 0 40px;border-top:1px solid #263d4b}.site-footer .wrap{display:flex;justify-content:space-between;gap:20px;align-items:center}.site-footer p{font-size:.86rem}.site-footer span{font-size:.76rem;line-height:1.7}
dialog{border:1px solid #415d6d;border-radius:16px;background:#102431;color:#e7f2f8;box-shadow:0 25px 100px #0006;padding:25px;max-width:min(94vw,1100px);max-height:92vh;width:1100px;overflow:auto}dialog::backdrop{background:#02090ed9;backdrop-filter:blur(6px)}.dialog-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.dialog-heading h2{font-size:1.12rem;line-height:1.7}.dialog-close{color:#d9edf6;border:1px solid #456271;background:#1c3645;padding:8px 13px;border-radius:7px;font-size:.85rem;white-space:nowrap}.dialog-heading .eyebrow{color:var(--mint)}#media-image{width:100%;max-height:65vh;object-fit:contain;aspect-ratio:auto;background:#344956;border-radius:5px}#media-caption{color:#b4cdd8;font-size:.96rem;margin:22px 0 13px}#media-original{font-size:.83rem;color:var(--mint)}#evidence-dialog{width:800px}#evidence-title{font-size:1.45rem;line-height:1.5;margin-bottom:24px}.evidence-item{border-top:1px solid #385463;padding:21px 0}.evidence-item h3{font-size:1.02rem;margin-bottom:11px}.evidence-item p{color:#b4cbd6;font-size:.93rem}.evidence-item .evidence-limit{color:#e0ba8c;font-size:.87rem;margin-top:10px}.evidence-item a{display:inline-block;margin-top:15px;color:var(--mint);font-size:.83rem}.evidence-item code{font-size:.74rem;color:#91b1c2;display:block;overflow-wrap:anywhere;margin-top:12px}.noscript{background:#ffe8bc;color:#473413;padding:20px;font-size:.95rem;position:relative}
@media(min-width:1650px){.wrap{width:min(1300px,calc(100% - 160px))}.cinema video{max-height:560px}}@media(max-width:1200px){.chapter-rail{display:none}.wrap{width:calc(100% - 64px)}.showcase-stage{grid-template-columns:minmax(0,1.75fr) minmax(255px,1fr)}.video-tabs button{padding:18px 14px}.artifact-gallery{grid-template-columns:repeat(2,1fr)}.artifact img{aspect-ratio:16/10}.timeline{grid-template-columns:repeat(3,1fr)}.tool-flow button{padding:21px 17px}.baseline-grid{gap:28px}.product-map>div{gap:25px}.download-card{gap:30px;padding:34px}}
@media(max-width:850px){:root{--topbar:72px}.chapter{padding:62px 0 47px}.opening{padding-top:37px}.wrap{width:calc(100% - 44px)}.opening-heading{gap:28px}.opening h1{font-size:2.8rem}.opening-intro>p{font-size:.92rem}.showcase-stage{grid-template-columns:1fr}.stage-side{gap:18px}.video-tabs{flex-direction:row;gap:10px}.video-tabs button{flex:1;min-width:0;padding:16px 13px;gap:10px}.video-tabs button b{display:none}.video-tabs button strong{font-size:.89rem}.video-tabs button small{font-size:.76rem}.stage-side>.eyebrow{display:none}.stage-note{padding-block:0}.stage-note p{display:inline;margin-left:10px;line-height:1.8}.gallery-heading{margin-top:36px}.baseline-grid,.requirements-layout{grid-template-columns:1fr;gap:30px}.delivery-list{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px}.delivery-list>div,.delivery-list>div:first-child{padding:0 0 20px}.delivery-list h3{font-size:1.02rem}.delivery-list p{font-size:.9rem}.tool-flow{grid-template-columns:1fr 28px 1fr 28px 1fr}.tool-flow button{display:block;padding:19px 15px}.tool-flow button>span{display:block;margin-bottom:13px}.tool-flow button strong{font-size:1.1rem}.tool-flow button small{display:block;margin-top:8px;font-size:.74rem}.tool-detail{gap:25px;padding:24px}.timeline-heading{display:block}.timeline-heading p{margin-top:11px}.case-tabs{gap:9px}.case-tabs button{padding:15px 13px;font-size:.85rem}.case-flow{gap:20px}.case-flow p{font-size:.9rem}.validation-layout{gap:20px}.validation-ladder button{padding:17px 16px;flex-direction:column;align-items:flex-start;gap:8px}.quiz-options{grid-template-columns:1fr}.handoff-grid{grid-template-columns:1fr}.handoff-grid article{padding:26px}.handoff-grid h3{margin:15px 0}.limits-strip{grid-template-columns:1fr;gap:12px}.product-map>div{gap:20px;padding-inline:0}.product-map p{font-size:.87rem}.product-map h3{font-size:.97rem}.mvp{gap:30px;padding:28px}.download-card{grid-template-columns:1fr}.download-action{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:16px 24px}.download-action .primary-button{grid-row:span 2;grid-column:2}.download-action #checksum-feedback{grid-column:1/-1}.site-footer .wrap{display:block}.site-footer span{display:block;margin-top:10px}}
@media(max-width:600px){:root{--topbar:66px;scroll-padding-top:82px}.wrap{width:calc(100% - 36px)}.topbar{padding:0 17px;gap:15px}.brand{font-size:.75rem;gap:9px}.brand small{font-size:.62rem}.brand-mark{font-size:1.2rem;padding:5px 7px}.brand-mark span{font-size:.72rem}.chapter-menu{margin-left:auto;width:154px;max-width:48vw;font-size:.75rem}.chapter-menu summary{padding:10px;gap:7px}.top-download{display:none}.chapter-menu nav{width:210px;right:0}.chapter-menu nav a{font-size:.86rem}.chapter{padding:47px 0 38px}.opening{padding-top:28px}.opening-heading{display:block;margin-bottom:26px}.opening h1{font-size:2.5rem;line-height:1.18;margin-top:13px}.opening-intro{margin-top:24px;padding:0}.opening-intro>p{margin-bottom:17px;font-size:.94rem}.opening-intro>p br{display:none}.opening .eyebrow{font-size:.71rem}.video-label{padding:12px 13px;font-size:.69rem;gap:8px}.cinema{border-radius:12px}.cinema video{aspect-ratio:4/3}.video-controls{padding:13px;display:block}.video-controls>span{display:block;margin-top:12px;font-size:.83rem}.video-controls button{min-height:40px}.video-tabs{gap:7px}.video-tabs button{display:block;padding:14px 10px}.video-tabs button>span{font-size:.73rem}.video-tabs button strong{font-size:.86rem;margin-top:8px}.video-tabs button small{font-size:.74rem;line-height:1.7}.stage-note p{display:block;margin:7px 0 0;font-size:.84rem}.gallery-heading{display:block;margin:30px 0 18px}.gallery-heading h2{font-size:1.28rem}.gallery-heading p{margin-top:8px;font-size:.83rem}.artifact-gallery{gap:12px}.artifact{padding-bottom:14px;border-radius:8px}.artifact img{aspect-ratio:4/3}.artifact strong{font-size:.83rem;margin-inline:12px}.artifact-tag{font-size:.68rem;margin:12px 12px 7px}.artifact small{font-size:.68rem;margin:9px 12px 0}.artifact small span{display:none}.next-cue{font-size:.84rem;gap:15px;padding-top:25px;line-height:1.8}.next-cue span{font-size:1.3rem}.section-heading{margin-bottom:28px}.section-heading h2{font-size:1.9rem;line-height:1.45;margin:12px 0 15px}.section-heading>p:last-child{font-size:1rem;line-height:1.85}.eyebrow{font-size:.73rem}.dimension-line{padding:16px 13px;gap:7px;font-size:.68rem}.dimension-line b{font-size:.71rem}.delivery-list{grid-template-columns:1fr;gap:0}.delivery-list>div,.delivery-list>div:first-child{padding:19px 0}.delivery-list h3{font-size:1.1rem}.delivery-list p{font-size:.97rem}.important-line{grid-template-columns:1fr;gap:8px;padding:19px;margin-top:25px;font-size:.9rem}.section-bottom{align-items:flex-start;margin-top:29px;gap:19px;flex-direction:column;font-size:.9rem;padding-top:23px}.section-bottom>a{align-self:flex-end}.requirements-layout{gap:24px}blockquote{font-size:1.22rem;padding-left:20px}blockquote footer{font-size:.9rem}.power-explorer{padding:23px;border-radius:12px}.power-equation{gap:10px}.power-equation strong{font-size:2.9rem}.power-explorer>p{font-size:.93rem}.decision-row{padding:20px;display:block}.decision-row>p{font-size:.96rem;margin-top:9px}.read-more summary{font-size:.95rem}.read-more p{font-size:.93rem}.insight{grid-template-columns:1fr;gap:13px;padding-top:22px;margin-top:28px}.insight>p{font-size:1.02rem}.tool-flow{grid-template-columns:1fr;gap:8px}.tool-flow .flow-arrow{display:none}.tool-flow button{display:grid;grid-template-columns:25px 1fr;gap:4px 10px;padding:17px}.tool-flow button>span{grid-row:span 2;margin:0;padding-top:2px}.tool-flow button strong{font-size:1.12rem}.tool-flow button small{font-size:.85rem;margin-top:3px}.tool-detail{grid-template-columns:1fr;gap:23px;padding:23px 19px}.tool-detail dl>div{grid-template-columns:48px 1fr;gap:12px}.tool-detail dd{font-size:.93rem}.timeline-heading{margin-top:33px}.timeline-heading h3{font-size:1.28rem}.timeline{grid-template-columns:repeat(2,1fr)}.timeline button{padding:17px 12px}.timeline button small{font-size:.78rem}.timeline button strong{font-size:.85rem}.timeline-detail{margin:22px 0;padding-left:17px}.case-tabs{grid-template-columns:1fr;gap:8px;margin:26px 0}.case-tabs button{font-size:.93rem;padding:15px}.case-detail h3{font-size:1.4rem}.case-lead{font-size:.96rem}.case-images{grid-template-columns:1fr;gap:19px}.case-flow{grid-template-columns:1fr;gap:21px;margin-top:26px}.case-flow p{font-size:.96rem}.case-figure figcaption{font-size:.87rem;padding:15px 17px}.case-boundary{font-size:.9rem;padding:17px 19px}.case-lesson{display:block}.case-lesson p{font-size:1.02rem;margin-top:10px}.validation-layout{grid-template-columns:1fr}.validation-ladder{gap:9px}.validation-ladder button{flex-direction:row;align-items:center;padding:17px;gap:12px}.validation-ladder button strong{font-size:.95rem}.validation-ladder button span{font-size:.74rem}.validation-detail{padding:25px 20px}.validation-detail h3{font-size:1.22rem}.quiz{padding:24px 18px;margin-top:27px}.quiz h3{font-size:1.12rem}.quiz-options button{font-size:.92rem;padding:15px}.handoff-grid article{padding:25px 22px}.handoff-grid article>p{font-size:.97rem}.limits-strip{margin-top:24px}.product-map .map-labels{display:none}.product-map>div{display:grid;grid-template-columns:1fr;padding:22px 0;gap:8px}.product-map>div>p:first-child{font-size:.8rem;color:#668391}.product-map h3{font-size:1.18rem}.product-map p{font-size:.97rem}.mvp{grid-template-columns:1fr;padding:26px 21px;gap:28px;margin-top:31px}.mvp h3{font-size:1.3rem}.mvp h3 br{display:none}.mvp li{gap:12px;grid-template-columns:36px 1fr}.takeaway{margin-top:24px;padding:20px 0}.takeaway strong{font-size:1.03rem}.takeaway strong span{padding:0 4px}.download-card{padding:26px 21px;border-radius:12px;gap:25px}.download-card h3{font-size:1.42rem;margin-top:17px}.download-card p{font-size:.97rem}.download-card ul{font-size:.87rem;padding-left:17px}.download-action{display:flex;gap:17px}.download-action>span:first-child{font-size:.83rem}.primary-button{padding:18px 21px;font-size:.98rem}.download-details{font-size:.93rem;padding:22px 0}.download-details summary{font-size:.96rem}.download-details p{font-size:.9rem}.download-foot{gap:20px;font-size:.86rem;flex-direction:column}.site-footer{padding:27px 0}.site-footer span{font-size:.73rem}dialog{padding:18px;max-width:calc(100vw - 24px);border-radius:11px}.dialog-heading{gap:13px;align-items:flex-start}.dialog-heading h2{font-size:1rem}.dialog-close{font-size:.79rem;padding:8px 10px}.dialog-heading .eyebrow{font-size:.7rem;padding-top:10px}#media-caption{font-size:.93rem}#media-image{max-height:54vh}#evidence-title{font-size:1.25rem}.evidence-item p{font-size:.92rem}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}