:root{--ink:oklch(.23 .035 150);--primary:oklch(.4 .106 150);--accent:oklch(.72 .15 45);--blue:oklch(.68 .12 225);--bg:#fff;--surface:oklch(.965 .015 150);--muted:oklch(.47 .03 150);--line:oklch(.88 .025 150);--shadow:0 8px 24px rgba(20,55,45,.12)}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--ink);font-family:'DM Sans','Noto Sans SC',sans-serif;color:var(--ink)}button{font:inherit;border:0;cursor:pointer}.deck{width:100%;height:100%;position:relative}.slide{position:absolute;inset:0;background:var(--bg);padding:clamp(28px,5vw,76px);display:grid;opacity:0;visibility:hidden;transform:translateX(4%);transition:opacity .48s ease,transform .48s ease;overflow:hidden}.slide.is-active{opacity:1;visibility:visible;transform:none;z-index:2}.slide:after{content:"";position:absolute;right:5vw;bottom:5vw;width:100px;height:100px;border:1px solid var(--line);border-radius:50%;opacity:.55}.eyebrow{font-size:11px;letter-spacing:.12em;font-weight:700;color:var(--primary);margin:0 0 18px}.page-mark{position:absolute;right:clamp(28px,5vw,76px);bottom:24px;font-size:11px;letter-spacing:.08em;color:var(--muted)}h1,h2,h3,p{margin-top:0}h1,h2{font-weight:900;letter-spacing:-.03em;line-height:.98;text-wrap:balance}h2{font-size:clamp(42px,6vw,88px)}h2 span,h1 em{color:var(--primary);font-style:normal}.lede{max-width:440px;color:var(--muted);line-height:1.7;font-size:16px}.cover-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.88)}.cover-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,36,30,.95) 0%,rgba(13,36,30,.72) 42%,rgba(13,36,30,.2) 100%)}.slide--cover{color:#fff;display:flex;align-items:center}.cover-content{position:relative;z-index:1;max-width:680px}.logo{width:220px;height:auto;object-fit:contain;object-position:left center;margin-bottom:46px;filter:brightness(0) invert(1)}.cover-content .eyebrow{color:#d8f2df}.cover-content h1{font-size:clamp(48px,8vw,108px);margin-bottom:28px}.cover-sub{font-size:18px;line-height:1.7;color:#e8f2ec}.cover-sub span{font-size:14px;color:#b9d4c5}.start-btn,.restart-btn{margin-top:28px;padding:14px 22px;border-radius:999px;background:var(--accent);color:var(--ink);font-weight:700;display:inline-flex;gap:20px;align-items:center;transition:transform .2s ease}.start-btn:hover,.restart-btn:hover{transform:translateY(-2px)}.cover-foot,.close-foot{position:absolute;left:clamp(28px,5vw,76px);right:clamp(28px,5vw,76px);bottom:24px;display:flex;justify-content:space-between;font-size:11px;letter-spacing:.08em;color:#c9dfd2}.slide--overview{display:block;padding-top:clamp(34px,7vw,100px)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:40px}.section-head h2{margin-bottom:0}.ability-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:clamp(44px,7vw,96px)}.ability{min-height:240px;padding:26px;display:flex;flex-direction:column;justify-content:space-between;border-radius:10px}.ability h3{font-size:28px;line-height:1.05;margin:0}.ability h3 small{font-size:13px;font-weight:500;opacity:.7}.ability p{font-size:14px;line-height:1.65;margin:0;max-width:20ch}.ability-num{font-weight:700;font-size:12px;opacity:.7}.ability--green{background:var(--primary);color:#fff}.ability--blue{background:var(--blue);color:#fff}.ability--coral{background:var(--accent);color:var(--ink)}.ability--ink{background:var(--ink);color:#fff}.slide--safety{display:block;background:var(--surface)}.safety-top{display:flex;justify-content:space-between;align-items:end}.safety-top h2{margin:0}.safety-note{max-width:340px;line-height:1.7;color:var(--muted);font-size:14px}.safety-note b{color:var(--ink)}.safety-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:56px}.safety-card{background:#fff;padding:24px;border-radius:10px;min-height:180px;box-shadow:var(--shadow);display:flex;flex-direction:column}.safety-icon{font-size:28px;color:var(--primary);margin-bottom:20px}.safety-card strong{font-size:18px}.safety-card span{font-size:11px;letter-spacing:.08em;color:var(--muted);margin-top:5px}.safety-card p{font-size:13px;line-height:1.6;color:var(--muted);margin:15px 0 0}.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);margin-top:22px;border-top:1px solid var(--line);padding-top:18px;gap:20px}.stat-strip b{font-size:22px;display:block;color:var(--primary)}.stat-strip span{font-size:12px;color:var(--muted)}.device-slide{grid-template-columns:48% 52%;padding:0}.device-visual{position:relative;overflow:hidden;background:#e7eee9}.device-visual img,.device-visual video{width:100%;height:100%;object-fit:cover}.device-visual img{mix-blend-mode:multiply}.visual-stamp{position:absolute;left:34px;bottom:34px;font-size:12px;font-weight:700;line-height:1.1;letter-spacing:.12em;color:var(--primary);border:1px solid var(--primary);padding:9px 11px;border-radius:50%;text-align:center;transform:rotate(-9deg)}.device-copy{padding:clamp(34px,6vw,88px) clamp(32px,6vw,92px);display:flex;flex-direction:column;justify-content:center}.device-copy h2{font-size:clamp(48px,6.5vw,94px);margin:0 0 20px}.device-intro{font-size:16px;line-height:1.7;color:var(--muted);max-width:440px}.tags{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 30px}.tags span{border:1px solid var(--line);padding:7px 10px;border-radius:999px;font-size:11px;color:var(--primary)}.specs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;border-top:1px solid var(--line);padding-top:20px}.specs b{font-size:22px;display:block}.specs small{font-size:10px;color:var(--muted);line-height:1.4}.tip{margin:24px 0 0;padding:13px 15px;background:var(--surface);font-size:12px;line-height:1.6}.tip b{color:var(--primary);font-size:10px;letter-spacing:.08em;margin-right:8px}.slide--social{display:grid;grid-template-columns:55% 45%;padding-right:0;background:var(--surface)}.social-copy{padding-top:clamp(30px,5vw,72px)}.social-copy h2{margin-bottom:20px}.bench-row{display:flex;gap:14px;margin:34px 0}.bench-card{background:#fff;padding:20px;border-radius:10px;min-width:210px}.bench-card b{font-size:22px;display:block}.bench-card span{color:var(--primary);font-size:11px}.bench-card p{font-size:13px;color:var(--muted);line-height:1.55;margin:14px 0 0}.social-rule{display:flex;gap:16px;align-items:center;border-top:1px solid var(--line);padding-top:18px;max-width:510px}.social-rule span{font-size:28px;color:var(--accent);font-weight:800}.social-rule p{margin:0;font-size:14px}.social-art{position:relative;background:var(--primary);overflow:hidden}.orbit{position:absolute;border:1px solid rgba(255,255,255,.28);border-radius:50%;top:50%;left:50%;transform:translate(-50%,-50%)}.orbit--one{width:32vw;height:32vw}.orbit--two{width:24vw;height:24vw}.orbit--three{width:15vw;height:15vw;border-color:var(--accent)}.orbit-label{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:#fff;font-weight:700;letter-spacing:.12em;font-size:14px;line-height:1.6;text-align:center}.slide--rules{display:grid;grid-template-columns:42% 58%;align-items:center;background:var(--ink);color:#fff}.rules-intro{padding-right:clamp(20px,5vw,80px)}.rules-intro .eyebrow{color:#b9d4c5}.rules-intro h2 span{color:var(--accent)}.rules-intro p{color:#bed4c6;line-height:1.7;max-width:320px}.rules-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.rule{display:flex;gap:16px;padding:18px;background:rgba(255,255,255,.07);border-radius:10px;min-height:130px}.rule>span{font-size:28px;color:var(--accent);font-weight:800}.rule b{display:block;font-size:17px}.rule small{display:block;color:#a8c5b6;font-size:10px;margin-top:5px}.rule p{font-size:12px;color:#d5e5dc;line-height:1.5;margin:14px 0 0}.slide--close{display:block;background:var(--accent);color:var(--ink);text-align:center}.logo--dark{filter:none;width:170px;margin:0;position:absolute;left:0;top:0}.close-top{position:relative;height:120px}.close-top .eyebrow{color:var(--ink);padding-top:8px}.close-center{position:absolute;left:50%;top:51%;transform:translate(-50%,-50%);width:min(680px,80vw)}.check-circle{width:86px;height:86px;border-radius:50%;background:var(--ink);color:var(--accent);display:grid;place-items:center;font-size:48px;margin:0 auto 28px}.close-center h2{font-size:clamp(48px,7vw,96px);margin-bottom:24px}.close-center h2 em{color:var(--ink)}.close-center p{font-size:15px}.restart-btn{background:var(--ink);color:#fff}.close-foot{left:0;right:0;color:var(--ink);border-top:1px solid rgba(20,55,45,.25);padding-top:14px}.deck-nav{position:fixed;z-index:10;left:50%;bottom:18px;transform:translateX(-50%);display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:999px;background:rgba(17,39,32,.92);box-shadow:0 4px 16px rgba(0,0,0,.18)}.nav-btn{width:34px;height:34px;border-radius:50%;background:transparent;color:#fff;font-size:18px}.nav-btn:hover{background:rgba(255,255,255,.12)}.progress{width:130px;height:3px;background:rgba(255,255,255,.24);overflow:hidden}.progress-fill{display:block;height:100%;width:8.33%;background:var(--accent);transition:width .35s ease}.nav-index{background:transparent;color:#fff;font-size:11px;letter-spacing:.08em;padding:0 5px}.slide-dots{position:fixed;right:24px;top:50%;z-index:10;display:flex;flex-direction:column;gap:7px;transform:translateY(-50%)}.slide-dots i{width:5px;height:5px;border-radius:50%;background:rgba(255,255,255,.45)}.slide-dots i.active{background:var(--accent);transform:scale(1.5)}
@media(max-width:850px){.slide{padding:28px}.section-head,.safety-top{display:block}.section-head .lede{margin-top:18px}.ability-grid,.safety-grid{grid-template-columns:1fr 1fr;margin-top:34px}.ability{min-height:160px;padding:18px}.ability h3{font-size:22px}.device-slide{display:block;overflow:auto}.device-visual{height:40vh;min-height:220px}.device-copy{padding:28px 28px 70px}.device-copy h2{font-size:52px}.social-art{display:none}.slide--social{display:block}.rules-intro{padding:0;margin-bottom:28px}.rules-list{gap:8px}.rule{min-height:110px;padding:14px}.cover-content h1{font-size:56px}.logo{width:170px;margin-bottom:30px}.slide-dots{display:none}.page-mark{right:28px;bottom:78px}.deck-nav{bottom:14px}.stat-strip{margin-top:16px}}
@media(max-width:560px){.ability-grid,.safety-grid,.rules-list{grid-template-columns:1fr}.ability{min-height:125px}.safety-card{min-height:130px}.specs b{font-size:18px}.bench-row{flex-direction:column}.bench-card{min-width:0}.cover-foot{font-size:9px}.section-head h2,.safety-top h2{font-size:50px}}
@media(prefers-reduced-motion:reduce){.slide{transition:none}.start-btn,.restart-btn{transition:none}}

/* Overview image treatment */
.slide--overview{color:#fff}
.overview-bg,.overview-shade{position:absolute;inset:0;width:100%;height:100%}
.overview-bg{object-fit:cover;object-position:center 52%}
.overview-shade{background:linear-gradient(180deg,rgba(11,35,28,.82) 0%,rgba(11,35,28,.48) 50%,rgba(11,35,28,.7) 100%)}
.slide--overview .section-head,.slide--overview .ability-grid{position:relative;z-index:1}
.slide--overview .eyebrow{color:oklch(.9 .08 145)}
.slide--overview h2 span{color:oklch(.86 .13 85)}
.slide--overview .lede{color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.35)}
.slide--overview .page-mark{z-index:1;color:#fff}
.slide--overview .ability{box-shadow:0 4px 12px rgba(0,0,0,.18)}

/* Playground master plan */
.slide--layout{grid-template-columns:minmax(320px,42%) minmax(0,58%);gap:clamp(28px,5vw,72px);align-items:center;background:var(--surface)}
.layout-copy{position:relative;z-index:1}
.layout-copy h2{font-size:clamp(42px,5.4vw,78px);margin-bottom:24px}
.layout-zones{display:grid;gap:1px;margin:28px 0;background:var(--line)}
.layout-zones>div{position:relative;display:grid;grid-template-columns:14px 1fr;column-gap:12px;background:#fff;padding:14px 16px}
.layout-zones b{font-size:14px}
.layout-zones small{grid-column:2;color:var(--muted);font-size:11px;line-height:1.5;margin-top:3px}
.zone-dot{width:10px;height:10px;border-radius:50%;margin-top:4px}
.zone-dot--green{background:var(--primary)}.zone-dot--coral{background:var(--accent)}.zone-dot--blue{background:var(--blue)}
.layout-tip{font-size:12px;line-height:1.65;color:var(--muted);border-top:1px solid var(--line);padding-top:16px}
.layout-tip b{color:var(--primary);margin-right:8px}
.layout-plan{position:relative;margin:0;height:min(78vh,760px);background:#fff;padding:18px 18px 38px;box-shadow:var(--shadow);transform:rotate(.5deg)}
.layout-plan img{display:block;width:100%;height:100%;object-fit:contain}
.layout-plan figcaption{position:absolute;left:18px;bottom:13px;font-size:10px;letter-spacing:.08em;color:var(--muted)}
@media(max-width:850px){.slide--layout{grid-template-columns:1fr;overflow:auto;padding-bottom:90px}.layout-copy h2{font-size:48px}.layout-plan{height:62vh;min-height:420px}.layout-zones{margin:20px 0}}

/* Ground material specification */
.slide--ground{grid-template-columns:38% 62%;gap:58px;align-items:center;background:#f7f9f6}
.ground-copy h2{font-size:78px;margin-bottom:24px}
.ground-note{display:flex;gap:14px;align-items:flex-start;border-top:1px solid var(--line);padding-top:18px;margin-top:30px;font-size:13px;line-height:1.55;color:var(--muted)}
.ground-note b{color:var(--primary);white-space:nowrap}
.ground-diagram{display:grid;gap:16px}
.ground-diagram--generated{display:block;min-height:700px;background:url('assets/ground-cross-section-v5.png') center/contain no-repeat}
.ground-diagram--generated .ground-zone{display:none}
.ground-zone{position:relative;display:grid;grid-template-columns:152px 1fr;gap:26px;align-items:center;background:#fff;padding:18px 22px;min-height:174px;border:1px solid var(--line)}
.ground-zone--play{border-color:oklch(.75 .08 150)}.ground-zone--public{border-color:oklch(.78 .1 45)}
.zone-label{display:flex;flex-direction:column;gap:4px;align-self:stretch;justify-content:center;border-right:1px solid var(--line);padding-right:18px}.zone-label b{font-size:18px}.zone-label small{font-size:10px;letter-spacing:.05em;color:var(--muted)}.zone-label p{font-size:10px;line-height:1.45;color:var(--muted);margin:12px 0 0}
.cutaway{position:relative;height:130px;padding:2px 78px 0 20px;display:flex;flex-direction:column;justify-content:flex-end;perspective:700px}.material{position:relative;height:30px;margin-top:4px;padding:0 14px;display:flex;align-items:center;justify-content:space-between;clip-path:polygon(5% 0,100% 0,95% 100%,0 100%);transform:skewX(-8deg);box-shadow:inset 0 -5px 0 rgba(0,0,0,.09)}.material:before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:rgba(255,255,255,.35)}.material-name,.material strong{transform:skewX(8deg);position:relative;z-index:1}.material-name{font-size:11px;font-weight:700}.material-name small{font-size:9px;font-weight:500;opacity:.7;margin-left:6px}.material strong{font-size:12px}.material--turf{height:34px;background:oklch(.72 .16 127);color:oklch(.22 .05 145)}.material--turf:after{content:"";position:absolute;left:16px;right:16px;top:-5px;height:8px;border-radius:50%;background:oklch(.8 .17 125)}.material--xpe{height:52px;background:oklch(.8 .09 211);color:oklch(.25 .05 218)}.material--thin{height:28px;background:oklch(.86 .07 211)}.material--epdm-top{height:32px;background:oklch(.65 .16 37);color:#fff}.material--epdm-base{height:40px;background:oklch(.78 .09 49);color:oklch(.28 .05 40)}.material--foundation{height:24px;background:oklch(.6 .025 155);color:#fff}.cutaway:after{content:"材料厚度\A MATERIAL DEPTH";white-space:pre;position:absolute;right:0;top:14px;width:62px;height:96px;border-left:1px solid var(--primary);display:flex;align-items:center;padding-left:10px;font-size:8px;line-height:1.5;letter-spacing:.05em;color:var(--muted)}.cutaway:before{content:"";position:absolute;right:57px;top:14px;width:8px;height:96px;border-top:1px solid var(--primary);border-bottom:1px solid var(--primary)}
@media(max-width:850px){.slide--ground{grid-template-columns:1fr;gap:26px;overflow:auto;padding-bottom:90px}.ground-copy h2{font-size:48px}.ground-diagram{padding-bottom:30px}.ground-zone{padding-left:150px}.ground-zone:after{left:132px}}

/* Fixed 16:9 presentation canvas. The browser only scales this stage. */
html,body{width:100%;height:100%;overflow:hidden;background:oklch(.12 0 0)}
body{position:relative}
.stage{position:absolute;left:50%;top:50%;width:1600px;height:900px;transform-origin:center center;overflow:hidden;background:#fff}
.deck{width:1600px;height:900px}
.slide{width:1600px;height:900px;padding:76px}
.slide:after{right:80px;bottom:80px}
.page-mark{right:76px;bottom:24px}
h2{font-size:88px}
.cover-content h1{font-size:108px}
.logo{width:220px;margin-bottom:46px}
.cover-foot,.close-foot{left:76px;right:76px}
.slide--overview{padding-top:100px}
.section-head h2,.safety-top h2{font-size:88px}
.section-head .lede{margin-top:0}
.ability-grid{margin-top:76px}
.ability h3{font-size:28px}
.safety-grid{margin-top:56px}
.stat-strip{margin-top:22px}
.device-slide{display:grid;grid-template-columns:48% 52%;padding:0;overflow:hidden}
.device-visual{height:900px;min-height:0}
.device-copy{padding:72px 92px}
.device-copy h2{font-size:94px}
.specs b{font-size:22px}
.slide--social{display:grid;grid-template-columns:55% 45%;padding:76px 0 76px 76px}
.social-copy{padding-top:52px}
.social-art{display:block}
.orbit--one{width:510px;height:510px}.orbit--two{width:384px;height:384px}.orbit--three{width:240px;height:240px}
.slide--rules{display:grid;grid-template-columns:42% 58%;padding:76px}
.rules-intro{padding-right:80px;margin-bottom:0}
.rules-list{grid-template-columns:1fr 1fr;gap:12px}
.rule{min-height:130px;padding:18px}
.slide--layout{grid-template-columns:minmax(320px,42%) minmax(0,58%);gap:72px;align-items:center;overflow:hidden;padding:76px}
.slide--ground{grid-template-columns:38% 62%;gap:58px;align-items:center;padding:76px;overflow:hidden}
.ground-copy h2{font-size:78px}
.ground-zone{min-height:174px}
.layout-copy h2{font-size:78px}
.layout-zones{margin:28px 0}
.layout-plan{height:700px;min-height:0}
.section-head,.safety-top{display:flex}
.ability-grid,.safety-grid{grid-template-columns:repeat(4,1fr)}
.ability{min-height:240px;padding:26px}
.safety-card{min-height:180px}
.bench-row{flex-direction:row}
.close-center{width:680px}
.deck-nav{position:absolute;bottom:18px}
.slide-dots{position:absolute;display:flex}
.device-visual--kilimanjaro img{object-position:10% center}
.close-center{width:min(900px,90vw)}
.close-center h2 em{white-space:nowrap}
.device-visual--jumping-net img{object-position:24% center}
.device-copy{padding:52px 72px 62px;justify-content:flex-start}
.device-copy .eyebrow{margin-bottom:12px}
.device-copy h2{font-size:76px;margin-bottom:12px}
.device-intro{font-size:14px;line-height:1.55;margin-bottom:0}
.tags{margin:12px 0 18px}
.specs{padding-top:14px}
.safety-callout{display:grid;grid-template-columns:118px 1fr;gap:18px;margin-top:18px;padding:16px 18px;background:var(--accent);color:var(--ink);border-radius:8px}
.safety-callout__head{display:flex;flex-direction:column;justify-content:center;border-right:1px solid rgba(20,55,45,.28);padding-right:16px}
.safety-callout__head b{font-size:22px;line-height:1.1}
.safety-callout__head span{font-size:11px;font-weight:800;letter-spacing:.1em;margin-top:6px}
.safety-callout ul{margin:0;padding-left:20px;display:grid;gap:6px;align-content:center}
.safety-callout li{font-size:15px;line-height:1.42;font-weight:700}
.safety-callout li::marker{color:var(--primary)}
.safety-callout--bench{max-width:590px;margin-top:24px}
.slide--social .social-copy{padding-top:12px}
.slide--social .lede{line-height:1.6}
.slide--social .bench-row{margin:24px 0}
.slide--social .bench-card{padding:17px}
.social-art{background:oklch(.93 .018 150)}
.bench-visuals{height:100%;display:grid;grid-template-rows:1fr 1fr;gap:22px;padding:62px 58px 72px}
.bench-visuals figure{position:relative;margin:0;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 6px 8px rgba(20,55,45,.1)}
.bench-visuals img{display:block;width:100%;height:100%;object-fit:contain;padding:20px 22px 12px}
.bench-visuals figcaption{position:absolute;left:22px;top:18px;display:flex;flex-direction:column;color:var(--ink)}
.bench-visuals figcaption b{font-size:22px;line-height:1}
.bench-visuals figcaption span{margin-top:5px;font-size:9px;font-weight:800;letter-spacing:.08em;color:var(--primary)}
.slide--rules{grid-template-columns:31% 69%;gap:36px}
.rules-intro{padding-right:24px}
.rules-intro h2{font-size:80px}
.rules-list{grid-template-columns:1fr 1fr;gap:12px}
.rule{min-height:200px;padding:20px;background:rgba(255,255,255,.08)}
.rule>span{font-size:30px;line-height:1}
.rule b{font-size:18px;line-height:1.25}
.rule small{font-size:9px;letter-spacing:.06em}
.rule p{font-size:12px;line-height:1.55;margin-top:12px}
.rule--featured{background:var(--accent);color:var(--ink)}
.rule--featured>span,.rule--featured small,.rule--featured p{color:var(--ink)}
.rule:last-child{grid-column:1 / 3;min-height:156px}
.slide--responsibility{display:grid;grid-template-columns:34% 66%;grid-template-rows:1fr auto;gap:42px;background:var(--ink);color:#fff;padding:76px}
.slide--responsibility:after{border-color:rgba(255,255,255,.16)}
.responsibility-head{align-self:center;padding-right:18px}
.responsibility-head .eyebrow{color:#b9d4c5}
.responsibility-head h2{font-size:72px;margin-bottom:28px}
.responsibility-head h2 span{color:var(--accent)}
.responsibility-head>p:last-child{max-width:350px;color:#c9dfd2;font-size:15px;line-height:1.75}
.responsibility-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-self:center}
.responsibility-grid article{position:relative;min-height:510px;padding:34px;background:#fff;color:var(--ink);border-radius:8px;display:flex;flex-direction:column}
.responsibility-grid article:before{content:"";position:absolute;left:0;right:0;top:0;height:10px;background:var(--blue);border-radius:8px 8px 0 0}
.responsibility-grid .responsibility-card--alert:before{background:var(--accent)}
.responsibility-num{font-size:42px;font-weight:900;color:var(--primary);line-height:1}
.responsibility-grid small{margin:18px 0 8px;font-size:10px;font-weight:800;letter-spacing:.08em;color:var(--muted)}
.responsibility-grid h3{font-size:29px;line-height:1.1;margin:0 0 22px}
.responsibility-grid p{font-size:14px;line-height:1.75;color:var(--muted);margin:0}
.responsibility-grid strong{display:block;margin-top:auto;padding-top:24px;border-top:1px solid var(--line);font-size:14px;line-height:1.7;color:var(--primary)}
.responsibility-card--alert strong{color:oklch(.45 .15 35)}
.responsibility-foot{grid-column:1 / 3;display:flex;gap:32px;align-items:center;border-top:1px solid rgba(255,255,255,.18);padding-top:20px;font-size:14px}
.responsibility-foot b{color:var(--accent)}
.responsibility-foot span{color:#c9dfd2}
.slide--responsibility .page-mark{color:#b9d4c5}
.device-slide--stacked{grid-template-columns:1fr;grid-template-rows:55% 45%;background:#fff}
.device-slide--stacked .device-visual{grid-row:1;height:100%;min-height:0}
.device-slide--stacked .device-visual video{object-position:center 52%}
.device-slide--stacked .visual-stamp{left:auto;right:76px;bottom:30px;color:#fff;border-color:#fff;text-shadow:0 1px 5px rgba(0,0,0,.45)}
.device-slide--stacked .device-copy{grid-row:2;display:grid;grid-template-columns:27% 29% 44%;grid-template-rows:auto auto 1fr;column-gap:34px;row-gap:10px;padding:28px 76px 56px;align-items:start}
.device-slide--stacked .eyebrow{grid-column:1;grid-row:1;margin:0}
.device-slide--stacked h2{grid-column:1;grid-row:2 / 4;font-size:66px;margin:2px 0 0;align-self:start}
.device-slide--stacked .device-intro{grid-column:2;grid-row:1 / 3;margin:0;max-width:330px;font-size:14px;line-height:1.55}
.device-slide--stacked .tags{grid-column:2;grid-row:3;margin:2px 0 0;align-self:start}
.device-slide--stacked .specs{grid-column:3;grid-row:1;margin:0;padding-top:0;border-top:0;align-self:start}
.device-slide--stacked .safety-callout{grid-column:3;grid-row:2 / 4;margin:0;grid-template-columns:104px 1fr;padding:12px 14px;gap:14px;align-self:stretch}
.device-slide--stacked .safety-callout__head{padding-right:12px}
.device-slide--stacked .safety-callout__head b{font-size:19px}
.device-slide--stacked .safety-callout__head span{font-size:10px}
.device-slide--stacked .safety-callout li{font-size:13px;line-height:1.4}

.view-counter{position:fixed;top:18px;right:24px;z-index:20;display:flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;background:rgba(17,39,32,.88);color:#fff;font-size:11px;letter-spacing:.06em;box-shadow:0 4px 16px rgba(0,0,0,.18);backdrop-filter:blur(6px)}
.view-counter__label{opacity:.72}
.view-counter__count{font-weight:700;color:oklch(.72 .15 45);font-variant-numeric:tabular-nums}
@media(max-width:850px){.view-counter{top:12px;right:12px;padding:6px 11px;font-size:10px}}