:root{--bg:#0a1213;--bg2:#101b1c;--panel:#172223;--panel2:#1d2a2a;--line:rgba(201,227,214,.16);--text:#f1f4ed;--muted:#a1ada8;--faint:#72817c;--accent:#c9eacb;--accent2:#a7d5c1;--gold:#bfa988;--danger:#e4ae9f;--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Microsoft YaHei",sans-serif;--serif:"Songti SC","Noto Serif CJK SC","STSong",serif}
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@media (max-width:1100px){.content-width{padding-left:4vw;padding-right:4vw}.site-header{padding:0 4vw}.intro{grid-template-columns:minmax(0,1fr) 200px}.intro-aside{padding-left:22px}.stage-specs{grid-template-columns:repeat(2,1fr)}.stage-specs div:nth-child(2){border-right:0}.stage-specs div:nth-child(-n+2){border-bottom:1px solid var(--line)}.model-grid{grid-template-columns:1fr}.chart-wrap{max-width:720px;margin:auto;width:100%}.metrics-grid{grid-template-columns:repeat(2,1fr)}.insights-grid{grid-template-columns:1fr}.narrative-panel .narrative-caveat{margin-top:15px}.narrative-panel h3{margin-top:25px}}
@media (max-width:1100px){.business-categories,.case-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
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@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}.stage-image{will-change:auto}}
@media (max-width:680px){.cave-orbit{transform:scale(.67) rotateX(-19deg) rotateY(-27deg)}.model-hint{top:25%}}
@media (max-width:680px){.scenario-comparison{grid-template-columns:1fr}.compare-card{padding:20px}.compare-heading{margin-top:47px}.compare-heading h3{font-size:19px}.compare-big{font-size:32px}}
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/* Edition 02 — restrained architectural / editorial art direction.
   Typography and image-led hierarchy; no external fonts or runtime services. */
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.intro{min-height:630px;padding-top:116px;padding-bottom:112px;grid-template-columns:minmax(0,1fr) 260px;gap:clamp(40px,7vw,110px);border-bottom:1px solid var(--line)}.intro-copy{max-width:940px}.eyebrow{color:var(--accent2);font-size:10px;letter-spacing:.19em}.eyebrow-line{background:var(--accent2);width:36px}.edition{color:#898e85;margin-left:20px}.intro h1{font-size:clamp(62px,6.9vw,116px);line-height:1.19;letter-spacing:-.065em;margin:32px 0 27px}.intro h1 em{color:var(--accent);font-weight:400}.period{color:var(--gold)}.intro-lede{color:#bec1b7;font-size:15px;line-height:2}.intro-actions{margin-top:44px}.primary-action{background:var(--accent);border-color:var(--accent);color:#161b16;min-height:54px}.primary-action:hover{background:#f7ebd0}.quiet-action{color:#d0ccbd;border-bottom-color:#918878}.intro-aside{border-left-color:var(--line);padding-left:34px;gap:26px}.aside-index{font-size:10px;color:var(--accent2);letter-spacing:.19em}.aside-number{font-size:76px;color:var(--text)}.aside-number span{color:var(--gold)}.intro-aside p{font-size:12px;color:#abb0a7}.aside-bottom{line-height:2;color:#91958b;font-size:9px}
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.metrics-section{padding-bottom:145px}.metrics-grid{gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.metric-card{min-height:220px;background:transparent;border:0;border-right:1px solid var(--line);padding:27px 24px}.metric-card:last-child{border-right:0}.metric-card.accent{background:#e5dfd0;color:#171b16;border:0}.metric-card.accent .metric-value{color:#23281e}.metric-card.accent .metric-top{color:#55584c}.metric-card.accent p{color:#717467}.metric-top{color:#c1c4ba}.metric-value{font-size:clamp(33px,3.2vw,54px);font-weight:440;letter-spacing:-.065em}.metric-card p{color:#8d9689;font-size:11px}
.model-section{padding-bottom:152px}.model-grid{gap:16px}.controls-panel,.chart-panel,.heatmap-panel,.detail-panel{background:#191d1a;border-color:#3a3f36}.controls-panel,.chart-panel{padding:34px}.chart-panel{background:#1c211e}.panel-index{color:var(--accent2)}.panel-heading h3{font-weight:430}.text-button{color:var(--accent2);border-bottom-color:#988a6f}.slider-label label{color:#d0d0c6}.slider-label output{font-weight:460}.slider-label output span{color:#92978b}.slider-item input[type=range]{background:linear-gradient(90deg,var(--accent) var(--fill,50%),#494b43 var(--fill,50%))}.slider-item input[type=range]::-webkit-slider-thumb{border-color:var(--accent);background:#191d1a;box-shadow:0 0 0 4px #272b25}.advanced-grid label,.revenue-input-grid label{color:#b5bcab}.advanced-grid input,.revenue-input-grid input{background:#121713;border-color:#505449;color:#eeeae0}.advanced summary{color:#e0dbcb}.advanced summary span:last-child{color:#afa994}.revenue-inputs-head strong{font-weight:450}.chart-kpi>div{border-left-color:#737465}.chart-kpi small{color:#acb2a4}.chart-kpi strong{font-weight:450}.chart-wrap .cash-line{stroke:var(--accent)}.chart-wrap .cash-point{fill:#eee2c5;stroke:#1c211e}.chart-wrap svg text{fill:#abb2a4}.chart-wrap .grid-line{stroke:#3a4138}.chart-wrap .axis-line{stroke:#6c7468}.chart-legend{color:#c2c5b9}.legend-line,.legend-dot{background:var(--accent)}.chart-footnote,.revenue-model-note{color:#9aa493}.revenue-mix-panel{background:#1c211d;border-color:#3d433a;padding:34px}.revenue-mix-bar{background:#2c312c;height:17px}.revenue-mix-detail span{color:#adb9a9}.unit-econ-grid>div{background:#272e27;border-color:#424b3f}.unit-econ-grid strong{color:#e9ddc5}.unit-econ-grid small{color:#b2bbab}
.insights-section{padding-bottom:160px}.heatmap-panel{background:#191d1a}.narrative-panel{background:#e2ddcf;color:#20251d}.narrative-panel .panel-index{color:#726752}.narrative-panel h3{font-family:var(--serif)}.narrative-panel>p{color:#51594d}.narrative-divider{background:#c0b8a8}.narrative-stat span{color:#5d6558}.narrative-panel .narrative-caveat{color:#787c70}.detail-panel{margin-top:16px}th{color:#aeb6a6}td{color:#d4d7cb}.compare-card{background:transparent;border-color:#3b4139}.compare-card.current{background:#282d25;border-color:#b5a78b}.compare-index b,.compare-mini strong{color:var(--accent)}.compare-mini span{color:#acb5a5}.compare-card>p{color:#a1a99d}.method-grid h2 span{color:var(--accent)}.formula-list span{color:var(--accent2)}.formula-list p{color:#b9beb2}.formula-list strong{color:#edeae0}.references-section li a{color:#e1d5bd;text-decoration-color:#817862}.site-footer{border-top-color:var(--line)}.footer-brand{color:var(--accent)}
.case-credit-note{margin:38px 0 0;color:#878f82;font-size:10px;line-height:1.9;max-width:790px}.business-caveat{margin-top:31px}
.scenario-risk{border-left:1px solid var(--gold);background:rgba(215,177,124,.055);color:#c4bca9;font-size:12px;line-height:1.95;margin:24px 0 0;padding:13px 19px}.scenario-risk[hidden]{display:none}
@media (max-width:1100px){.content-width{padding-left:4.5vw;padding-right:4.5vw}.site-header{padding-left:4.5vw;padding-right:4.5vw}.intro{grid-template-columns:minmax(0,1fr) 205px;gap:42px}.case-grid{gap:35px 18px}}
@media (max-width:840px){.site-nav{display:none}.intro{grid-template-columns:1fr}.intro-aside{display:none}}
@media (max-width:680px){.site-header{height:65px}.brand{font-size:11px}.content-width{padding-left:22px;padding-right:22px}.intro{padding-top:72px;padding-bottom:76px;border-bottom:0}.intro h1{font-size:clamp(49px,12vw,73px)}.intro-lede{font-size:13px}.eyebrow{font-size:8px;letter-spacing:.13em}.edition{margin-left:8px}.experience-section,.business-section,.metrics-section,.model-section,.insights-section{padding-bottom:95px}.experience-section{padding-top:12px}.section-heading{margin:26px 0 29px}.section-heading h2{font-size:35px}.section-heading p{font-size:12px}.scenario-tab{padding:15px 9px}.scenario-tab.active::after{height:2px}.stage{height:510px;margin-left:-22px;margin-right:-22px}.stage-bottom{padding:29px 22px}.stage-specs div{padding:18px 14px}.business-lead{padding:25px 23px;margin-bottom:26px;grid-template-columns:1fr}.business-categories{grid-template-columns:1fr;gap:4px}.business-categories article{min-height:0;padding:20px 0 24px}.business-categories h3{margin:14px 0 10px}.business-categories p{font-size:12px}.case-head{display:block;margin:68px 0 27px}.case-head h3{font-size:32px}.case-head p{margin-top:17px}.case-grid{display:grid;grid-template-columns:1fr;gap:43px}.case-card,.case-card:nth-child(-n+2){grid-column:1}.case-media,.case-card:nth-child(-n+2) .case-media{aspect-ratio:1.56;margin-bottom:22px}.case-card h4{font-size:28px}.case-card>p{font-size:12px}.business-caveat{margin-top:38px}.metrics-grid{grid-template-columns:repeat(2,1fr)}.metric-card{min-height:170px;padding:18px 14px}.metric-card:nth-child(2){border-right:0}.metric-card:nth-child(-n+2){border-bottom:1px solid var(--line)}.metric-value{font-size:30px}.controls-panel,.chart-panel,.heatmap-panel,.detail-panel{padding:24px 19px}.revenue-mix-panel{padding:24px 18px}.site-footer{padding-bottom:34px}}
@media print{.case-card{break-inside:avoid}.case-media{height:50mm;aspect-ratio:auto}.case-media img{filter:none}.business-categories article,.case-card{color:#222}.business-categories h3,.case-card h4{color:#111}.business-categories p,.case-card>p,.case-takeaway{color:#444}}