:root{--ink:#213a35;--muted:#61716a;--paper:#f7f8f2;--line:#d9e1d7;--cold:#2779a5;--warm:#a8791c;--hot:#c96543;--instant:#8b4c72}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font-family:'Yu Gothic UI','Meiryo',sans-serif;font-size:15px;line-height:1.85}a{color:inherit;text-underline-offset:5px}button{font:inherit;cursor:pointer}button,a,summary{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #2381a5;outline-offset:5px}header{position:sticky;top:0;z-index:4;background:#f7f8f2f5;border-bottom:1px solid var(--line);min-height:78px;padding:18px 4.5%;display:flex;align-items:center;justify-content:space-between;gap:20px}header a{text-decoration:none}.brand{font-weight:800;font-size:14px;letter-spacing:1px;display:flex;align-items:center;gap:12px}.brand-icon{background:var(--ink);color:white;border-radius:7px;width:32px;height:32px;text-align:center;font-size:23px}.brand small{font-weight:400;font-size:11px;letter-spacing:0;border-left:1px solid var(--line);padding-left:12px}nav{display:flex;gap:26px;font-size:13px}nav a:hover{color:#178269}main{max-width:1240px;margin:auto;padding:0 42px}section{padding:65px 0;border-bottom:1px solid var(--line)}.hero{display:grid;grid-template-columns:1.15fr 1fr;gap:45px;align-items:center;padding:68px 0 62px}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:800;color:#537463;margin:0 0 18px}.subject{font-size:14px;margin:0 0 10px}h1{font-size:clamp(29px,3.2vw,42px);line-height:1.65;letter-spacing:-1.3px;margin:0 0 22px}h1 em{font-style:normal;background:linear-gradient(transparent 65%,#dce9c6 65%)}h2{font-size:27px;line-height:1.6;letter-spacing:-.6px;margin:0 0 14px}h3{font-size:20px;margin:10px 0}p{margin:10px 0}.lead{color:var(--muted);font-size:15px;margin-bottom:27px}.primary{background:var(--ink);color:white;text-decoration:none;border:0;display:inline-flex;align-items:center;justify-content:center;gap:24px;border-radius:7px;padding:12px 19px;font-size:13px;font-weight:700}.primary:hover{background:#365b4e}.textlink{display:inline-block;margin:18px;font-size:12px}.hero-note{background:#edf1e6;border:1px solid #d9e1cf;border-radius:12px;padding:26px 25px 22px;transform:rotate(-1deg)}.note-top{font-size:14px;font-weight:700;display:flex;justify-content:space-between}.note-top span{font-size:9px;letter-spacing:1.5px;color:var(--muted)}.stair{display:flex;gap:8px;height:228px;align-items:end}.stair>div{flex:1;position:relative;background:color-mix(in srgb,var(--c) 14%,white);border-top:4px solid var(--c);height:var(--h);color:var(--c);border-radius:5px 5px 0 0}.stair b{position:absolute;top:-43px;left:0;width:100%;text-align:center;font-size:21px}.stair span{font-size:8px;display:block;text-align:center;padding-top:12px;letter-spacing:1px}.hero-note p{font-size:12px;margin-top:20px}.hero-note small{font-size:10px;color:var(--muted)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px}.section-heading>p{font-size:12px;color:var(--muted);margin-bottom:20px}.temperature{display:flex;justify-content:space-between;font-size:11px;margin:19px 0 23px;padding-top:16px;position:relative}.temperature:before{content:'';height:5px;position:absolute;top:0;width:100%;border-radius:5px;background:linear-gradient(90deg,#75bad6,#e4c064,#df9070,#a87899)}.comparison{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.option{background:white;border:1px solid var(--line);border-top:4px solid var(--c);border-radius:9px;padding:20px 18px}.option small{color:var(--c);font-size:10px;font-weight:800;letter-spacing:1px}.option h3{font-size:22px;margin:4px 0 0}.option .alias{font-size:11px;color:var(--muted);margin:0 0 17px}.option .core{font-size:19px;font-weight:800;color:var(--c);margin:12px 0}.prepared{display:flex;gap:4px}.prepared span{height:7px;flex:1;background:#e9ece6;border-radius:2px}.prepared .on{background:var(--c)}.option dl{margin-bottom:0;font-size:12px}.option dt{font-size:10px;letter-spacing:1px;color:var(--muted);margin-top:14px}.option dd{margin:4px 0;min-height:45px}.caption{font-size:11px;color:var(--muted);margin-top:18px}.mode-buttons{display:flex;gap:8px;margin:22px 0}.mode-buttons button{background:transparent;border:1px solid var(--line);border-radius:30px;padding:8px 23px;font-size:13px;color:var(--ink)}.mode-buttons button[aria-pressed=true]{background:var(--ink);color:white;border-color:var(--ink)}.scene-controls{display:flex;align-items:center;justify-content:space-between;background:#e9eee4;padding:14px 22px;border-radius:10px 10px 0 0;gap:14px}.scene-controls>span{font-weight:700}.segmented{display:flex;background:#dce3d7;padding:4px;border-radius:7px}.segmented button{padding:6px 18px;border:0;background:transparent;border-radius:5px;font-size:12px}.segmented button[aria-pressed=true]{background:white;box-shadow:0 1px 3px #0001}#scene{padding:25px 30px;background:white;border:1px solid var(--line);display:grid;grid-template-columns:1fr 120px 1fr;align-items:center;gap:20px;border-radius:0 0 10px 10px}.site-node{border:1px solid #cbd7cc;border-radius:8px;padding:18px;text-align:center;background:#f5f8f3}.site-node.off{background:#fff6ef;border-color:#ecccb8}.site-node b{display:block;font-size:18px}.site-node small{font-size:12px;color:var(--muted)}.server{width:64px;height:48px;border:2px solid currentColor;border-radius:5px;margin:5px auto 12px;position:relative;color:#527a63;background:repeating-linear-gradient(0deg,transparent 0 12px,#527a6320 12px 15px)}.server:after{content:'● ●';font-size:10px;position:absolute;right:5px;bottom:2px}.off .server{color:#c16e4b}.empty{border-style:dashed;color:#87978c;background:transparent}.bridge{text-align:center;font-size:12px;color:var(--muted)}.bridge b{display:block;font-size:28px;line-height:1.5}.steps-label{margin:24px 0 12px;font-weight:700}.steps-label small{font-size:11px;font-weight:400;color:var(--muted);margin-left:12px}.steps{list-style:none;padding:0;display:flex;gap:12px;counter-reset:step}.steps li{flex:1;padding:12px;background:#eaf0e4;border-radius:5px;font-size:12px;position:relative}.steps li:before{counter-increment:step;content:counter(step,decimal-leading-zero);display:block;color:#5c7859;font-size:10px;font-weight:800}.steps li:not(:last-child):after{content:'›';position:absolute;right:-10px;top:20px}.scene-note{font-size:12px;color:var(--muted)}.section-intro{color:var(--muted);margin-bottom:25px}.duo{display:grid;grid-template-columns:1fr 1fr;gap:20px}.difference{border:1px solid #dfcbbd;background:#fbf1e8;border-radius:10px;padding:25px}.difference.instant{background:#f4edf2;border-color:#dfcedc}.mini-label{font-size:12px;font-weight:700;color:#a45134}.instant .mini-label{color:#844a70}.network{display:flex;align-items:center;gap:18px;margin:26px 0}.network span{flex:1;border:1px solid #d8b7a7;border-radius:6px;text-align:center;padding:14px 5px;font-size:11px;background:#fff9}.network b{font-size:13px}.network i{font-style:normal;font-size:23px}.difference p{font-size:13px}.difference>strong{font-size:12px;display:block;border-top:1px solid #dacabb;padding-top:15px;margin-top:18px}.important{background:#eaf0df;border-left:3px solid #7e9562;padding:18px 22px;margin-top:22px;font-size:13px}.important p{margin-bottom:0}details{border:1px solid var(--line);border-radius:7px;margin-top:18px;background:#fff7}summary{cursor:pointer;padding:17px 20px;font-size:13px;font-weight:700}.detail-body{padding:0 22px 20px;font-size:13px}.alternative{background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px}.alt-icon{font-size:28px;color:#688861}.keyphrase{font-weight:700;font-size:14px}.alternative p{font-size:13px}.flow{background:#edf1e8;padding:12px;border-radius:5px;font-size:12px;margin:18px 0}.muted{color:var(--muted);font-size:12px}.exam{scroll-margin-top:10px}.badge{background:#e4ebdb;padding:5px 12px;border-radius:30px;font-size:11px;white-space:nowrap}.question{font-size:19px;margin:20px 0 12px;max-width:850px}.answers{display:grid;gap:10px;margin:24px 0}.answer{width:100%;display:flex;gap:18px;align-items:center;text-align:left;background:white;border:1px solid var(--line);border-radius:7px;padding:17px 20px;color:var(--ink);font-size:14px}.answer span{flex-shrink:0;border-radius:5px;background:#edf0e8;padding:2px 10px;font-weight:700}.answer:hover{border-color:#719579;background:#f0f5e9}.answer[aria-pressed=true]{border:2px solid #587e5e;padding:16px 19px}.exam-actions{display:flex;gap:10px;flex-wrap:wrap}.secondary{background:transparent;border:1px solid #b9c8b8;padding:10px 18px;border-radius:7px;font-size:13px;color:var(--ink)}#feedback{background:#e8efdf;border-radius:7px;padding:18px;margin-bottom:18px;font-size:14px}#explanation{margin-top:28px;padding-top:20px;border-top:1px solid var(--line)}.answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px 30px;font-size:13px}.recap{text-align:center;background:#edf1e5;margin:50px 0 20px;border:0;border-radius:10px;padding:45px 20px}.recap h2{font-size:30px}.recap p:not(.eyebrow){font-size:14px;color:var(--muted)}.recap a{font-size:12px}footer{padding-bottom:25px}footer details{font-size:12px;padding:0 18px 10px}footer summary{padding-left:0}.footer-bottom{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-top:25px}.mobile-only{display:none}[hidden]{display:none!important}@media(max-width:950px){header .brand small{display:none}main{padding:0 25px}.hero{gap:25px}.textlink{margin-left:0}.comparison{grid-template-columns:repeat(2,1fr)}.option dd{min-height:0}}@media(max-width:650px){html{scroll-padding-top:125px}header{padding:12px 20px;display:block}.brand{font-size:12px}nav{margin-top:10px;gap:20px;font-size:11px}.brand-icon{width:25px;height:25px;font-size:18px}main{padding:0 20px}section{padding:40px 0}.hero{display:block;padding-top:38px}.hero-note{margin-top:30px;padding:22px;transform:none}.hero h1{font-size:29px;letter-spacing:-1px}.hero .lead{font-size:13px}.textlink{margin-left:12px;font-size:11px}.section-heading{display:block}.section-heading>p{margin-top:0}h2{font-size:23px}.eyebrow{font-size:10px;margin-bottom:12px}.comparison{gap:10px}.option{padding:14px 12px}.option h3{font-size:19px}.option .core{font-size:17px}.option .alias{font-size:10px}.temperature{font-size:9px}.mode-buttons{display:grid;grid-template-columns:1fr 1fr}.mode-buttons button{padding:8px}.scene-controls{padding:12px;align-items:start;flex-direction:column}.segmented{align-self:stretch}.segmented button{flex:1}#scene{grid-template-columns:1fr;gap:10px;padding:16px}.bridge b{font-size:23px}.bridge{display:flex;justify-content:center;gap:14px;align-items:center}.site-node{padding:15px}.server{height:36px;width:56px}.steps{display:grid;grid-template-columns:1fr 1fr}.steps li:after{display:none}.steps-label small{display:block;margin:0}.duo{grid-template-columns:1fr}.difference,.alternative{padding:21px}.mobile-only{display:block}.question{font-size:17px}.answer{padding:15px 12px;font-size:13px;gap:12px}.answer[aria-pressed=true]{padding:14px 11px}.answer-grid{grid-template-columns:1fr}.exam-actions .primary{width:100%}.recap h2{font-size:25px}.footer-bottom{display:block}.footer-bottom span{display:block}.badge{display:inline-block}.section-intro{font-size:13px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{header,.mode-buttons,.segmented,.exam-actions{display:none}main{max-width:none}section{break-inside:avoid}#explanation[hidden]{display:block!important}}

/* Icon-led recovery comparison */
.compact-hero{display:block;padding:38px 0 24px;border:0}.compact-hero h1{font-size:34px;line-height:1.5;margin-bottom:12px}.compact-hero .lead{margin-bottom:0}.visual-compare{background:#191c1b;color:#f4f7f5;border:1px solid #333b37;border-radius:16px;padding:30px;margin-bottom:18px}.visual-compare .eyebrow{color:#9caea3;margin-bottom:8px}.visual-compare h2{font-size:25px;margin-bottom:4px}.visual-compare .section-heading{display:block}.visual-compare .section-heading>p{color:#b4c1b9;margin:6px 0 15px;font-size:12px}.visual-compare .temperature{color:#c0cbc4;margin-bottom:8px}.visual-compare .comparison{display:block}.visual-row{padding:21px 0;border-bottom:1px solid #303732}.visual-row:last-child{border:0;padding-bottom:5px}.row-title{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:12px}.row-title h3{display:flex;align-items:center;gap:12px;font-size:17px;margin:0}.row-title>small{font-size:11px;color:#a5b1aa}.type-pill{border-left:3px solid var(--c);background:#2c3330;padding:2px 10px;border-radius:4px;font-size:13px;white-space:nowrap}.visual-panel{background:#111513;border-radius:10px;padding:14px 20px 13px;position:relative}.before-label{font-size:10px;letter-spacing:1px;color:#a8b5ad;position:absolute;top:16px;left:20px}.asset-diagram{display:flex;align-items:center;justify-content:center;gap:24px;padding:0 0 10px}.asset{display:flex;flex-direction:column;align-items:center;min-width:76px;line-height:1.6}.asset svg{height:31px;width:31px;margin-bottom:5px}.asset span{font-size:12px;font-weight:700;color:#cbd6ce}.asset small{font-size:10px}.asset.ready{color:#4de38c}.asset.pending{color:#89968e}.asset.pending svg{stroke-dasharray:3 3}.asset.pending span{color:#a9b4ad}.asset-plus{color:#53645a;font-size:13px}.active-site small{background:#123e25;padding:1px 9px;border-radius:20px;margin-top:3px;color:#5ceb99}.sync-link{display:flex;flex-direction:column;align-items:center;color:#bcc8c0}.sync-link b{font-size:25px;line-height:1.2}.sync-link small{font-size:10px}.after-line{font-size:12px;color:#c0cbc4;margin:6px 0 0;padding-top:10px;border-top:1px solid #253029}.after-line>span{font-size:10px;background:#2b3530;border-radius:3px;padding:3px 6px;margin-right:10px;color:#e0e7e2}.visual-compare .caption{color:#a8b6ac;font-size:11px;line-height:1.8}.visual-compare .temperature:before{height:4px}.visual-compare .section-heading>p:before{content:'●';color:#4de38c;margin-right:6px}@media(max-width:650px){.compact-hero{padding-top:28px}.compact-hero h1{font-size:26px}.compact-hero .lead{font-size:12px}.visual-compare{padding:18px 13px;border-radius:10px}.visual-compare h2{font-size:22px}.row-title{display:block}.row-title h3{font-size:13px;gap:7px}.type-pill{font-size:11px;padding:2px 7px}.row-title>small{display:none}.visual-panel{padding:12px}.before-label{position:static;margin-bottom:8px}.asset-diagram{gap:12px}.asset{min-width:60px}.asset svg{width:28px;height:28px}.after-line{font-size:11px;line-height:1.9}.after-line>span{display:inline-block}.visual-row{padding:16px 0}.visual-compare .section-heading>p{font-size:10px}.asset-plus{font-size:10px}}