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/* V2: readable copy, linked examples and a quiet reading guide. */
.hero{min-height:710px}.hero-copy h1{font-size:clamp(44px,4.25vw,60px);line-height:1.28}.hero-visual{height:530px}.sheet{transition:box-shadow .25s,border-color .25s}.sheet:hover{border-color:#9fbdd4;box-shadow:0 12px 28px #274e7420}.sheet h3{font-family:inherit;font-size:23px;font-weight:500}.sheet p{font-size:12px;line-height:1.8}.visual-top,.visual-bottom{font-size:11px}.comparison article{transition:background .25s,transform .25s}.comparison article:hover{background:#e7eff7;transform:translateY(-3px)}.comparison h3{font-size:21px}.comparison p{font-size:14px}.definition-panel>div{font-size:14px;color:var(--text)}.compare-demo{display:grid;grid-template-columns:.9fr 1.1fr;gap:54px;margin-top:44px;padding-top:40px;border-top:1px solid var(--line)}.compare-intro h3{font-size:24px;line-height:1.65;margin:12px 0}.compare-intro p{font-size:14px;color:var(--text);max-width:370px}.compare-intro small{display:block;font-size:11px;color:var(--muted);margin-top:16px}.compare-answer{background:#fff;border:1px solid var(--line);padding:22px}.compare-switch{display:flex;border-bottom:1px solid var(--line);gap:10px}.compare-switch button{flex:1;background:transparent;border:0;border-bottom:2px solid transparent;padding:12px 6px;font-size:13px;color:var(--text)}.compare-switch button[aria-selected=true]{border-bottom-color:var(--blue);color:var(--blue);font-weight:600}#compare-result{padding:24px 2px 12px;min-height:228px}.reply-label{font-size:11px;color:var(--muted)}#compare-text{font-size:18px;line-height:1.9;margin-top:12px}#compare-note{font-size:13px;color:var(--text);margin-top:16px}.learned #compare-text{color:#145d93}.click-hint{font-size:11px;color:var(--muted)}
.reader-bar{position:fixed;top:3px;left:0;right:0;z-index:40;transform:translateY(-130%);opacity:0;visibility:hidden;background:#f9fbfdf5;border-bottom:1px solid var(--line);backdrop-filter:blur(14px);transition:transform .3s,opacity .3s,visibility .3s}.reader-bar.is-visible{transform:translateY(0);opacity:1;visibility:visible}.reader-inner{max-width:1160px;margin:auto;min-height:65px;display:flex;align-items:center;justify-content:space-between;gap:28px}.reader-title{font-size:13px;font-weight:600;white-space:nowrap}.reader-inner nav{display:flex;gap:26px;align-items:center}.reader-inner nav a{font-size:12px;position:relative;padding:22px 0}.reader-inner nav a:after{content:'';position:absolute;bottom:9px;height:2px;left:0;right:0;background:var(--blue);transform:scaleX(0);transition:transform .25s}.reader-inner nav a[aria-current]{color:var(--blue)}.reader-inner nav a[aria-current]:after{transform:scaleX(1)}.reader-consult{font-size:12px;color:var(--blue)}
.scene-tabs{position:relative}.scene-tabs button{position:relative;z-index:1;transition:color .2s,background .2s}.scene-tabs button:hover{background:#ffffff60}.scene-tabs button[aria-selected=true]{border-bottom-color:transparent}.tab-indicator{position:absolute;top:0;left:0;height:3px;width:25%;background:var(--blue);transition:transform .3s cubic-bezier(.22,1,.36,1),width .3s;pointer-events:none}#scene-title{white-space:pre-line}.scene-panel{min-height:415px;overflow:hidden}.scene-panel h3{font-size:27px}.scene-panel p{font-size:15px}.example #scene-example{font-family:inherit;font-size:17px;line-height:1.9}.example .example-question{font-size:14px}.example .example-foot{font-size:12px}.human-line p{font-size:13px}.scene-controls{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid #d3dde6}.scene-controls>span{font-size:12px;color:var(--text)}.scene-controls>div{display:flex;gap:8px}.scene-controls button{width:44px;height:42px;border:1px solid #b9cad8;background:transparent;border-radius:3px;font-size:19px;color:var(--blue);transition:background .2s,color .2s}.scene-controls button:hover{background:var(--blue);color:white}.material-count span{display:inline-block}.material-meter{height:4px;background:#cddde9;margin:16px 0 20px;overflow:hidden}.material-meter>span{height:100%;display:block;width:0;background:var(--blue);transition:width .4s cubic-bezier(.22,1,.36,1)}.material-item{transition:padding-left .25s,background .25s}.material-item:has(input:checked){background:#edf3f8;padding-left:12px;padding-right:12px}.material-item small,.preparation-note p{font-size:14px}.preparation-note small{font-size:12px}
.build-layout{display:grid;grid-template-columns:280px 1fr;gap:55px}.build-aside{align-self:start;position:sticky;top:100px;padding:26px 30px;background:var(--pale);min-height:320px}.build-step-number{display:flex;align-items:baseline;gap:10px;margin-top:25px;line-height:1.2}.build-step-number span{font-size:78px;font-weight:300;letter-spacing:-.065em;color:var(--blue)}.build-step-number small{font-size:14px;color:#758a9b}#build-summary{font-size:17px;line-height:1.8;margin-top:22px;min-height:62px}.build-aside-note{font-size:12px;color:var(--muted);margin-top:24px}.build-track{position:absolute;right:0;top:0;bottom:0;width:3px;background:#d3e1ed}.build-track span{display:block;height:20%;background:var(--blue);transition:height .4s}.build-steps{border-top:1px solid var(--line)}.build-step{border-bottom:1px solid var(--line)}.build-step summary{display:flex;gap:18px;align-items:center;cursor:pointer;list-style:none;padding:24px 0}.build-step summary::-webkit-details-marker{display:none}.step-number{font-size:13px;color:#7892a5}.build-step h3{font-size:18px;font-weight:500;flex:1;margin:0}.plus{font-size:21px;color:var(--blue);line-height:1.4;transition:transform .25s}.build-step[open] .plus{transform:rotate(45deg)}.build-step[open] h3{color:var(--blue)}.fold{overflow:hidden}.build-step .fold>div{padding:0 0 24px 35px}.build-step .fold p{font-size:14px;color:var(--text);line-height:1.9}.step-result{margin-top:16px;background:#f1f5f8;padding:14px 18px;font-size:13px;color:var(--text)}.step-result b{display:block;font-size:11px;color:var(--blue);margin-bottom:4px;font-weight:500}.faq summary span{transition:transform .25s}.faq .fold>div{padding-bottom:24px}.faq .fold p{padding-bottom:0}.motion-pending{opacity:0;transform:translateY(16px)}.back-top{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border:1px solid #c4d4e1;border-radius:50%;background:#fff;color:var(--blue);z-index:35;font-size:20px;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .25s,transform .25s,visibility .25s}.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}.mobile-dock{transition:transform .3s}.at-consultation .mobile-dock{transform:translateY(110%);visibility:hidden}.form-status{font-size:12px}.consult-form label{font-size:13px}
@media(max-width:1200px){.reader-inner{padding:0 24px}.reader-inner nav{gap:22px}}
@media(max-width:1000px){.build-layout{grid-template-columns:230px 1fr;gap:30px}.build-aside{padding:24px}.compare-demo{gap:30px}.reader-title{display:none}.reader-inner nav{gap:26px}.hero-copy h1{font-size:46px}.scene-panel{gap:30px}}
@media(max-width:700px){html{scroll-padding-top:76px}.hero{min-height:0}.hero-copy h1{font-size:43px;line-height:1.3}.hero-lead{font-size:16px;line-height:1.85}.hero-note{font-size:13px}.hero-meta{font-size:11px;gap:14px}.hero-visual{height:500px}.sheet h3{font-size:22px}.sheet p{font-size:11px}.visual-bottom{font-size:10px}.visual-top{font-size:10px}.section-heading>p{font-size:15px;line-height:1.85}.definition-panel>p{font-size:17px}.definition-panel>div{font-size:13px}.comparison article{padding:24px}.comparison p{font-size:15px}.comparison h3{font-size:20px}.compare-demo{grid-template-columns:1fr;gap:24px;margin-top:32px;padding-top:28px}.compare-intro h3{font-size:22px;line-height:1.65}.compare-intro p{font-size:15px}.compare-intro small{font-size:12px}.compare-answer{padding:18px}.compare-switch{gap:4px}.compare-switch button{font-size:12px;padding:12px 3px}#compare-result{min-height:290px;padding-top:22px}#compare-text{font-size:17px}#compare-note{font-size:14px}.caption{font-size:12px;line-height:1.9}.reader-inner{padding:0 12px;min-height:54px;display:block}.reader-title,.reader-consult{display:none}.reader-inner nav{display:grid;grid-template-columns:repeat(5,1fr);gap:0}.reader-inner nav a{padding:17px 1px;text-align:center;font-size:11px;white-space:nowrap}.reader-inner nav a:after{bottom:7px;left:12px;right:12px}.scene-tabs button{font-size:13px;padding:14px 4px}.scene-panel{padding:26px 22px;min-height:600px;gap:28px}.scene-panel h3{font-size:25px}.scene-panel p{font-size:15px;line-height:1.85}.human-line p{font-size:13px}.example .example-question{font-size:14px}.example #scene-example{font-size:16px;line-height:1.9}.example .example-foot{font-size:12px}.scene-controls{padding:12px 0}.material-item strong{font-size:16px}.material-item small{font-size:14px;line-height:1.85}.material-item{padding:23px 0}.preparation-note p{font-size:15px}.preparation-note>small{font-size:12px}.build-layout{grid-template-columns:1fr;gap:24px}.build-aside{position:relative;top:0;min-height:0;padding:22px 24px;display:grid;grid-template-columns:90px 1fr;column-gap:20px}.build-aside>.small-label{grid-column:1/-1;font-size:11px}.build-step-number{margin-top:12px;gap:8px}.build-step-number span{font-size:52px}.build-step-number small{font-size:11px}#build-summary{font-size:15px;margin:16px 0 0;min-height:0}.build-aside-note{grid-column:1/-1;margin-top:16px;font-size:12px}.build-aside-note br{display:none}.build-step summary{gap:12px;padding:22px 0}.build-step h3{font-size:16px;line-height:1.65}.step-number{font-size:11px}.build-step .fold>div{padding-left:25px}.build-step .fold p{font-size:15px}.step-result{font-size:13px;padding:14px}.build-bottom h3{font-size:16px}.build-bottom p{font-size:14px}.important-note{font-size:13px}.fit-grid p{font-size:15px}.fit-route small{font-size:13px}.not-yet p{font-size:14px}.faq summary{font-size:15px;line-height:1.8}.faq details p{font-size:14px;line-height:1.9}.consult-copy>p{font-size:15px}.consult-points{font-size:14px}.consult-copy .fde-explain{font-size:12px}.consult-form label{font-size:12px}.form-intro{font-size:13px}.form-grid{grid-template-columns:1fr}.consult-form input:not([type=checkbox]),.consult-form select,.consult-form textarea{font-size:16px;min-height:46px}.consult-form .consent{font-size:12px}.form-status{font-size:12px}.back-top{right:12px;bottom:78px;width:36px;height:36px;font-size:17px}.at-consultation .back-top{bottom:16px}.mobile-dock{font-size:11px}.footer p{font-size:11px}}
@media(max-width:360px){.hero-copy h1{font-size:38px}.scene-panel{padding:24px 18px}.sheet p{font-size:10px}.compare-switch button{font-size:11px}.build-aside{column-gap:12px}}
@media(prefers-reduced-motion:reduce){.motion-pending{opacity:1;transform:none}.reader-bar,.mobile-dock,.back-top,.tab-indicator,.material-meter>span,.build-track span{transition:none!important}}