:root{--black:#060708;--ink:#f4f2ec;--soft:#b7b8b4;--ice:#bce9e6;--cyan:#22bdc0;--heat:#f26b3d;--amber:#e7a33e;--paper:#ebe9e2;--line:#ffffff26}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--black);-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{background:var(--black);color:var(--ink);margin:0;font-family:Arial,"Noto Sans KR",sans-serif;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input{font:inherit}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* hero */
.hero{justify-content:center;align-items:center;min-height:100svh;display:flex;position:relative;overflow:hidden}
.hero-image{object-fit:cover;object-position:center 54%;filter:saturate(.72) contrast(1.06) brightness(.64);width:106%;height:106%;animation:9s ease-out both hero-settle;position:absolute;inset:-3%;transform:scale(1.04)}
.hero-vignette{background:linear-gradient(rgba(2,4,5,.44),rgba(2,4,5,.086) 35%,rgba(2,4,5,.93)),radial-gradient(circle at 50% 38%,transparent 14%,rgba(2,4,5,.525) 95%);position:absolute;inset:0}
.hero-copy{z-index:3;text-align:center;text-shadow:rgba(0,0,0,.867) 0 5px 34px;width:min(1260px,92vw);position:relative}
.hero h1{letter-spacing:-.068em;flex-direction:column;align-items:center;margin:0;font-weight:880;line-height:.98;display:flex}
.hero h1 span{font-size:clamp(48px,7vw,106px)}
.hero h1 strong{color:#fff;margin-top:14px;font-size:clamp(48px,7vw,106px);position:relative}
.hero h1 strong:after{content:"";background:linear-gradient(90deg,transparent,rgba(255,255,255,.73) 36%,rgba(255,255,255,.22) 51%,rgba(255,255,255,.73) 64%,transparent);height:1px;position:absolute;bottom:-13px;left:8%;right:8%;transform:rotate(-.4deg)}
.dek{color:#e7e7e3;margin:38px auto 0;font-size:clamp(16px,1.65vw,24px);line-height:1.65}
.warming-mark{z-index:2;background:linear-gradient(transparent,var(--heat));width:1px;height:33vh;position:absolute;bottom:10vh;left:7vw}
.warming-mark i{background:rgba(255,255,255,.533);width:11px;height:1px;position:absolute;left:-5px}
.warming-mark i:nth-child(1){top:8%}
.warming-mark i:nth-child(2){top:34%}
.warming-mark i:nth-child(3){top:61%}
.warming-mark i:nth-child(4){top:88%}
.scroll-cue{z-index:4;color:#d0d2ce;letter-spacing:.15em;white-space:nowrap;justify-items:center;gap:7px;font-size:9px;display:grid;position:absolute;bottom:18px;left:50%;transform:translateX(-50%)}
.scroll-cue span{background:linear-gradient(var(--heat),transparent);width:1px;height:38px;animation:1.8s ease infinite pulse}
.photo-credit{z-index:12;right:clamp(18px,4vw,60px);bottom:max(20px,env(safe-area-inset-bottom));color:rgb(236,238,234);text-shadow:#000 0 1px 4px;white-space:nowrap;pointer-events:none;background:rgba(5,6,7,.45);border-radius:2px;margin:0;padding:3px 6px;font-size:.75rem;line-height:1.5;position:absolute}
.video-poster-frame .photo-credit{bottom:19px;right:16px}
.hero .photo-credit{bottom:18px}

/* mechanism / collapse chain */
.collapse-passage{color:#f5f4ef;background:#0b0c0d;height:190vh;position:relative}
.collapse-sticky{height:100svh;position:sticky;top:0;overflow:hidden}
.collapse-sticky .new-mechanism{background:0 0;width:100%;min-height:100svh}
.new-mechanism{isolation:isolate;flex-direction:column;justify-content:center;min-height:90svh;padding:120px 9vw;display:flex;position:relative;overflow:hidden}
.new-mechanism:before{content:"";z-index:-1;background:radial-gradient(circle at 78% 48%,#293029 0%,#121514 25%,#0b0c0d 58%);position:absolute;inset:0}
.new-mechanism h2{letter-spacing:-.075em;max-width:1100px;margin:0;font-size:clamp(50px,8vw,118px);line-height:.95}
.new-mechanism h2 b{color:var(--heat)}
.new-mechanism>small{color:#aab0a6;max-width:790px;margin-top:38px;display:block;font-size:14px;line-height:1.65}
.collapse-chain{border-top:1px solid rgba(255,255,255,.19);border-bottom:1px solid rgba(255,255,255,.19);grid-template-columns:repeat(6,1fr);width:min(1180px,100%);margin-top:58px;display:grid}
.new-mechanism .collapse-chain{border-color:rgba(255,255,255,.094);grid-template-columns:repeat(6,minmax(0,1fr));margin-top:64px}
.collapse-chain span{color:#f2f1ec;letter-spacing:-.04em;border-right:1px solid rgba(255,255,255,.11);min-height:112px;padding:22px 15px 20px 0;font-size:clamp(16px,1.65vw,25px);font-weight:800;position:relative}
.new-mechanism .collapse-chain span{border-right-color:rgba(255,255,255,.07);flex-direction:column;justify-content:space-between;min-height:138px;padding:28px 34px 30px;display:flex}
.collapse-chain span:last-child{border-right:0}
.collapse-chain span:not(:last-child):after{content:"";border-bottom:1px solid rgba(255,255,255,.533);border-right:1px solid rgba(255,255,255,.533);width:9px;height:9px;position:absolute;top:51%;right:-5px;transform:rotate(-45deg)}
.new-mechanism .collapse-chain span:not(:last-child):after{display:none}
.collapse-chain i{color:#777d79;letter-spacing:.16em;margin-bottom:28px;font-size:8px;font-style:normal;display:block}
.new-mechanism .collapse-chain i{color:#8e9995;width:max-content;margin:0 0 34px}
.new-mechanism .collapse-chain span:nth-child(-n+2){border-top:2px solid rgba(131,202,218,.45)}
.new-mechanism .collapse-chain span:nth-child(n+3){border-top:2px solid rgba(183,131,78,.45)}
.collapse-sticky .collapse-chain span{opacity:calc(.14 + var(--reveal) * .86);transform:translate3d(0,var(--drop),0);transition:opacity .12s linear,transform .18s cubic-bezier(.2,.72,.24,1),border-color .2s}
.collapse-sticky .collapse-chain span strong{transition:color .18s,text-shadow .18s}

/* cinematic sequence */
.sequence{background:#070809;height:500vh;position:relative}
.scene-sticky{height:100svh;position:sticky;top:0;overflow:hidden}
.cinematic{--accent:#dbe6e8;color:#f5f4ee;isolation:isolate;background:#080a0b;width:100%;height:100%;position:relative;overflow:hidden}
.cinematic.stage-1{--accent:#ff8b58}
.cinematic.stage-2{--accent:#d8c2a1}
.cinematic.stage-3{--accent:#f3a45f}
.cinematic.stage-4{--accent:#d9b790}
.living-backdrop{position:absolute;inset:-9%;overflow:hidden}
.living-backdrop:after{content:"";background:linear-gradient(90deg,rgba(7,8,9,.93) 0%,rgba(7,8,9,.58) 31%,rgba(7,8,9,.32) 50%,rgba(7,8,9,.58) 69%,rgba(7,8,9,.93) 100%),linear-gradient(rgba(7,8,9,.596),transparent 64%,rgba(7,8,9,.88));position:absolute;inset:0}
.living-backdrop img{object-fit:cover;filter:blur(35px) saturate(.5) brightness(.36);width:100%;height:100%;transform:scale(1.16)}
.living-frame{z-index:2;aspect-ratio:9/16;isolation:isolate;background:#111;position:absolute;top:5svh;bottom:6svh;left:50%;overflow:hidden;transform:translateX(-50%);box-shadow:rgba(255,255,255,.17) 0 0 0 1px,rgba(0,0,0,.933) 0 48px 130px}
.living-layer{object-fit:cover;object-position:center;filter:saturate(.76) contrast(1.08) brightness(.82);will-change:opacity,clip-path,transform;width:102%;height:102%;position:absolute;inset:-1%}
.living-base{z-index:1;transform-origin:50% 62%;transition:transform .15s linear}
.living-impact{z-index:2;transform-origin:50% 22%;transition:opacity .15s linear,clip-path .15s linear}
.living-flood{z-index:4;transform-origin:center top;transition:opacity .12s linear,clip-path .12s linear,transform .12s linear}
.living-layer.living-flood-edge{filter:blur(5px) saturate(.7) contrast(1.06) brightness(.8)}
.living-layer.living-flood-core{filter:blur(.35px) saturate(.75) contrast(1.08) brightness(.82)}
.living-grade{z-index:5;pointer-events:none;background:linear-gradient(rgba(4,5,6,.14) 0%,transparent 24%,transparent 58%,rgba(4,5,6,.784) 100%),radial-gradient(circle at 50% 44%,transparent 42%,rgba(3,4,4,.333));position:absolute;inset:0}
.living-pulse{z-index:6;left:0;right:0;pointer-events:none;background:linear-gradient(transparent,rgba(240,245,242,.047) 45%,transparent);border-top:1px solid rgba(255,255,255,.05);height:16%;transition:top .15s linear;position:absolute;transform:skewY(-2deg)}
.reconstruction-label{z-index:5;color:rgba(229,233,229,.71);letter-spacing:.12em;backdrop-filter:blur(7px);background:rgba(6,8,9,.62);border:1px solid rgba(255,255,255,.165);padding:7px 8px;font-size:7px;font-weight:800;position:absolute;top:14px;left:14px}
.drop-readout{z-index:5;backdrop-filter:blur(7px);background:rgba(7,9,10,.6);border:1px solid rgba(255,255,255,.208);padding:8px 9px;position:absolute;top:16px;right:16px}
.drop-readout span{color:rgba(212,216,212,.65);letter-spacing:.1em;font-size:7px;display:block}
.drop-readout b{color:var(--accent);margin-top:3px;font-size:17px;display:block}
.cinematic-copy{z-index:8;text-shadow:#000 0 3px 18px;width:min(24vw,350px);position:absolute;top:50%;left:5vw;transform:translateY(-50%)}
.cinematic-copy>div{align-items:baseline;gap:11px;display:flex}
.cinematic-copy>div span{color:var(--accent);font-size:12px;font-weight:900}
.cinematic-copy>div b{font-size:24px}
.cinematic-copy h2{letter-spacing:-.065em;margin:25px 0 15px;font-size:clamp(34px,3.6vw,58px);line-height:1.02;min-height:2.04em}
.cinematic-copy h2 .scene-title-line{white-space:nowrap;display:block}
.cinematic-copy p{color:#d5d6d1;margin:0;font-size:14px;line-height:1.8}
.cinematic-steps{z-index:8;width:min(15vw,210px);position:absolute;top:50%;right:5vw;transform:translateY(-50%)}
.cinematic-steps>div{color:rgba(255,255,255,.333);border-top:1px solid rgba(255,255,255,.157);grid-template-columns:30px 1fr;align-items:center;padding:15px 0;font-size:11px;display:grid}
.cinematic-steps>div:last-child{border-bottom:1px solid rgba(255,255,255,.157)}
.cinematic-steps>div.passed{color:#fff}
.cinematic-steps>div.passed span{color:var(--accent)}
.cinematic-scrub{z-index:10;color:rgba(255,255,255,.47);letter-spacing:.13em;font-size:8px;position:absolute;bottom:4.5svh;left:5vw;right:5vw}
.cinematic-scrub input{appearance:none;cursor:ew-resize;background:0 0;width:100%;height:24px;margin-top:5px;display:block}
.cinematic-scrub input::-webkit-slider-runnable-track{background:linear-gradient(90deg,var(--accent) calc(var(--p) * 100%),#ffffff38 0);height:2px}
.cinematic-scrub input::-webkit-slider-thumb{appearance:none;background:var(--accent);border:2px solid #fff;border-radius:50%;width:16px;height:16px;margin-top:-7px;box-shadow:rgba(255,255,255,.075) 0 0 0 6px}
.cinematic-scrub input::-moz-range-thumb{appearance:none;background:var(--accent);border:2px solid #fff;border-radius:50%;width:16px;height:16px;box-shadow:rgba(255,255,255,.075) 0 0 0 6px}
.cinematic-note{z-index:10;color:rgba(255,255,255,.333);margin:0;font-size:8px;position:absolute;bottom:1.4svh;left:5vw}

/* video explainer */
.video-explainer{color:#f5f4ef;isolation:isolate;background:#0b0d0e;grid-template-columns:minmax(0,1fr) minmax(300px,390px);align-items:center;gap:clamp(55px,9vw,150px);min-height:105svh;padding:120px 8vw;display:grid;position:relative;overflow:hidden}
.video-explainer:before{content:"";z-index:-1;background:radial-gradient(circle at 76% 48%,rgba(33,70,71,.23) 0%,transparent 30%),linear-gradient(115deg,#161a1b 0%,#090b0c 58%,#050607 100%);position:absolute;inset:0}
.video-explainer:after{content:"";z-index:-1;background:linear-gradient(90deg,rgba(255,255,255,.18),transparent 55%);height:1px;position:absolute;top:50%;left:8vw;right:8vw}
.video-explainer-copy{z-index:2;max-width:780px;position:relative}
.video-explainer-copy h2{letter-spacing:-.075em;margin:0;font-size:clamp(58px,7.3vw,108px);line-height:.94}
.video-explainer-copy h2 b{color:#dceeed;white-space:nowrap;display:block}
.video-explainer-copy>p:last-child{color:#bec4c0;max-width:620px;margin:36px 0 0;font-size:17px;line-height:1.78}
.video-frame{z-index:2;aspect-ratio:9/16;background:#000;width:100%;position:relative;box-shadow:rgba(255,255,255,.14) 0 0 0 1px,rgba(0,0,0,.8) 0 38px 100px}
.video-frame:before{content:"TV NEWSIS";color:#747a78;letter-spacing:.16em;writing-mode:vertical-rl;font-size:9px;position:absolute;top:0;right:calc(100% + 15px)}
.video-frame iframe{border:0;width:100%;height:100%}
.video-poster-frame{position:relative;overflow:hidden}
.video-poster-frame:after{content:"";z-index:4;pointer-events:none;border:1px solid rgba(255,255,255,.07);position:absolute;inset:0}
.video-poster-frame.is-playing:after{display:none}
.video-poster{color:#fff;cursor:pointer;text-align:left;background:#0a0c0d;border:0;width:100%;height:100%;padding:0;position:absolute;inset:0;overflow:hidden}
.video-poster>img{object-fit:cover;object-position:51% center;filter:saturate(.62) contrast(1.08) brightness(.58);width:100%;height:100%;transition:transform .7s cubic-bezier(.2,.75,.2,1),filter .45s;position:absolute;inset:0;transform:scale(1.035)}
.video-poster:after{content:"";background:linear-gradient(rgba(5,6,7,.094) 0%,rgba(5,6,7,.157) 38%,rgba(5,6,7,.91) 100%),linear-gradient(90deg,rgba(5,6,7,.46),transparent 62%);position:absolute;inset:0}
.video-poster:hover>img,.video-poster:focus-visible>img{filter:saturate(.72) contrast(1.1) brightness(.66);transform:scale(1.07)}
.video-poster-kicker,.video-poster>strong,.video-poster>small,.video-play{z-index:2;position:absolute}
.video-poster-kicker{color:#eef0ed;letter-spacing:.12em;backdrop-filter:blur(8px);background:rgba(7,9,10,.45);border:1px solid rgba(255,255,255,.36);padding:8px 10px;font-size:9px;font-weight:900;top:24px;left:24px}
.video-play{backdrop-filter:blur(9px);background:rgba(17,22,20,.56);border:1px solid rgba(255,255,255,.69);border-radius:50%;place-items:center;width:76px;height:76px;transition:transform .25s,background .25s;display:grid;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:rgba(0,0,0,.6) 0 18px 46px}
.video-poster:hover .video-play,.video-poster:focus-visible .video-play{color:#111;background:#e8ece5;transform:translate(-50%,-50%) scale(1.08)}
.video-play i{border-top:9px solid transparent;border-bottom:9px solid transparent;border-left:14px solid;width:0;height:0;margin-left:5px;display:block}
.video-poster>strong{letter-spacing:-.04em;font-size:22px;line-height:1.16;bottom:50px;left:24px;right:24px}
.video-poster>small{color:#c7cbc6;letter-spacing:.05em;font-size:10px;font-weight:700;bottom:24px;left:24px}
.video-credit{color:#bfc6c2;white-space:nowrap;font-size:.75rem;line-height:1.5;position:absolute;top:calc(100% + 12px);right:0}

/* damage passage */
.damage-passage{color:#fff;background:#050607;height:270vh;position:relative}
.damage-sticky{isolation:isolate;height:100svh;position:sticky;top:0;overflow:hidden}
.damage-images,.damage-images img,.damage-shade{position:absolute;inset:0}
.damage-images img{object-fit:cover;object-position:center;will-change:opacity,transform,filter;width:100%;height:100%}
.damage-shade{background:linear-gradient(transparent 32%,rgba(5,6,7,.66) 66%,rgba(5,6,7,.96) 100%),linear-gradient(90deg,rgba(5,6,7,.78) 0%,transparent 62%),radial-gradient(circle at 60% 42%,transparent 20%,rgba(5,6,7,.337) 100%)}
.damage-copy{z-index:3;text-shadow:#000 0 4px 32px;max-width:980px;position:absolute;bottom:12svh;left:7vw;right:7vw}
.damage-copy h2{letter-spacing:-.075em;margin:0;font-size:clamp(58px,8vw,118px);line-height:.92}
.damage-copy h2 b{color:#f2a15d}
.damage-copy>p:last-child{color:#e2e3df;max-width:650px;margin:30px 0 0;font-size:18px;line-height:1.72}
.damage-count{z-index:3;color:rgba(255,255,255,.54);letter-spacing:.16em;font-size:10px;font-weight:900;position:absolute;bottom:24px;left:7vw}

/* evidence / formula */
.evidence-sequence{color:#fff;background:#000;height:560vh;position:relative}
.evidence-sticky{isolation:isolate;height:100svh;padding:8svh 7vw;position:sticky;top:0;overflow:hidden}
.evidence-sticky:before{content:"";z-index:-1;background:radial-gradient(145px at 50% 54%,#232525 0%,#0c0d0d 55%,#000 100%);position:absolute;inset:0}
.evidence-head{z-index:3;position:absolute;top:8svh;left:7vw}
.evidence-head h2{color:#606461;letter-spacing:-.055em;margin:0;font-size:clamp(16px,1.65vw,24px);line-height:1.08;white-space:nowrap}
.evidence-head h2 b{color:#606461}
.evidence-stage{text-align:center;place-items:center;display:grid;position:absolute;inset:0}
.evidence-head,.evidence-stage,.evidence-axis{transition:opacity .32s,filter .32s}
.formula-mode .evidence-head,.formula-mode .evidence-stage,.formula-mode .evidence-axis{opacity:0;filter:blur(7px);pointer-events:none}
.evidence-stage article{pointer-events:none;place-items:center;width:min(1050px,90vw);min-height:48svh;display:grid;position:absolute}
.evidence-stage article.active{filter:none}
.evidence-stage article.past{opacity:0;filter:blur(8px);transform:translateY(-18svh)}
.evidence-stage article.future{opacity:0;filter:blur(8px);transform:translateY(18svh)}
.evidence-stage article>strong{color:#f4f4f0;letter-spacing:-.09em;text-shadow:none;opacity:0;background:0 0;padding:.14em .2em;font-size:clamp(120px,22vw,340px);line-height:1;transition:opacity .34s,transform .48s cubic-bezier(.2,.75,.2,1);display:block;position:absolute;transform:translateY(24px) scale(.96)}
.evidence-stage article>strong.wide{letter-spacing:-.085em;font-size:clamp(104px,17vw,270px)}
.evidence-stage article.active.value-only>strong{opacity:1;transform:none}
.evidence-stage article.active.detail>strong{opacity:0;transform:translateY(-25px) scale(.96)}
.evidence-copy{opacity:0;filter:blur(5px);place-items:center;width:min(980px,88vw);transition:opacity .38s,transform .5s cubic-bezier(.2,.75,.2,1),filter .38s;display:grid;position:absolute;transform:translateY(25px)}
.evidence-stage article.active.detail .evidence-copy{opacity:1;filter:none;transform:none}
.evidence-copy h3{color:#f2f2ed;letter-spacing:-.07em;margin:0;font-size:clamp(48px,7vw,104px);line-height:.96}
.evidence-copy p{color:#8f9490;letter-spacing:.02em;margin:24px 0 0;font-size:clamp(12px,1.1vw,16px);font-weight:650}
.evidence-copy small{color:#5f6460;letter-spacing:.12em;margin-top:12px;font-size:9px;font-weight:800;display:block}
.formula-stage{z-index:4;text-align:center;pointer-events:none;place-items:center;display:grid;position:absolute;inset:0;overflow:hidden}
.formula-stage article{opacity:0;filter:none;will-change:mask-image;width:min(1120px,88vw);transition:opacity .18s;position:absolute}
.formula-stage.visible article{opacity:1}
.formula-stage .formula-before{z-index:3}
.formula-stage .formula-after{z-index:2}
.formula-stage h3{color:#dedfda;letter-spacing:-.075em;margin:0;font-size:clamp(62px,8.5vw,132px);line-height:.92}
.formula-stage h3 b{color:#fff}
.evidence-axis{color:#666a67;letter-spacing:.14em;grid-template-columns:auto minmax(90px,15vw) auto;align-items:center;gap:12px;font-size:8px;font-weight:850;display:grid;position:absolute;bottom:5svh;left:50%;transform:translateX(-50%)}
.evidence-axis i{background:linear-gradient(90deg,#d8ddda,#565a57);height:1px;position:relative}
.evidence-axis i:after{content:"";border-top:1px solid #737774;border-right:1px solid #737774;width:7px;height:7px;position:absolute;top:-3px;right:-1px;transform:rotate(45deg)}

/* warning gap */
.warning-gap{color:#111411;background:#e9e8e2;height:300vh;position:relative}
.warning-sticky{isolation:isolate;height:100svh;padding:8svh 7vw;position:sticky;top:0;overflow:hidden}
.warning-sticky:before{content:"";z-index:-1;background:radial-gradient(circle at 50% 58%,#fff 0%,#eeede7 34%,#dedcd6 100%);position:absolute;inset:0}
.warning-head{z-index:3;position:absolute;top:8svh;left:7vw}
.warning-head>span{color:#777b77;letter-spacing:.16em;margin-bottom:14px;font-size:9px;font-weight:900;display:block}
.warning-head h2{color:#666a66;letter-spacing:-.055em;margin:0;font-size:clamp(24px,2.7vw,40px);line-height:1.03}
.warning-head h2 b{color:#171a17}
.warning-stage{text-align:center;place-items:center;display:grid;position:absolute;inset:0}
.warning-stage article{opacity:0;filter:blur(8px);width:min(1040px,88vw);transition:opacity .3s,transform .52s cubic-bezier(.2,.75,.2,1),filter .34s;position:absolute}
.warning-stage article.active{opacity:1;filter:none;transform:none}
.warning-stage article.past{filter:blur(9px);transform:translateY(-18svh)}
.warning-stage article.future{opacity:0;transform:translateY(18svh)}
.warning-stage article>strong{color:#9a613d;letter-spacing:-.075em;margin-bottom:3svh;font-size:clamp(66px,10vw,150px);line-height:.82;display:block}
.warning-stage h3{letter-spacing:-.075em;margin:0;font-size:clamp(54px,7vw,104px);line-height:.92}
.warning-stage h3 b{color:#945a35}
.warning-stage p{color:#4f554f;margin:28px auto 0;font-size:16px;line-height:1.72}
.warning-rail{grid-template-columns:repeat(3,minmax(58px,9vw));gap:8px;display:grid;position:absolute;bottom:12svh;left:50%;transform:translateX(-50%)}
.warning-rail i{background:rgba(23,26,23,.14);height:2px;position:relative;overflow:hidden}
.warning-rail i:after{content:"";transform-origin:0 center;background:#945a35;transition:transform .4s;position:absolute;inset:0;transform:scaleX(0)}
.warning-rail i.active:after{transform:scaleX(1)}
.warning-conclusion{color:#282c28;margin:0;font-size:13px;font-weight:750;line-height:1.55;position:absolute;bottom:5svh;left:7vw}
.warning-caveat{color:#777c77;text-align:right;width:min(460px,40vw);margin:0;font-size:9px;line-height:1.55;position:absolute;bottom:5svh;right:7vw}

/* final passage */
.final-passage{color:#fff;background:#050607;height:230vh;position:relative}
.final-sticky{isolation:isolate;height:100svh;position:sticky;top:0;overflow:hidden}
.final-images,.final-images img,.final-shade{position:absolute;inset:0}
.final-images img{object-fit:cover;object-position:center 38%;will-change:opacity,transform,filter;width:100%;height:100%}
.final-images img:nth-child(2){object-position:center 52%}
.final-shade{z-index:1;background:linear-gradient(90deg,rgba(5,6,7,.91) 0%,rgba(5,6,7,.66) 52%,rgba(5,6,7,.396) 100%),linear-gradient(rgba(5,6,7,.3) 0%,transparent 46%,rgba(5,6,7,.97) 100%)}
.final-first,.final-reveal{z-index:2;transform-origin:50% 55%;will-change:opacity,transform,filter;position:absolute;top:42svh;left:8vw;right:8vw}
.final-first{max-width:1100px}
.final-first h2,.final-reveal h2{letter-spacing:-.075em;margin:0;font-size:clamp(58px,7.5vw,112px);line-height:.94}
.final-first h2 b{color:#f1a15c}
.final-first>p:last-child{color:#d1d3ce;max-width:620px;margin:30px 0 0;font-size:17px;line-height:1.75;white-space:nowrap}
.final-reveal{transform-origin:0 center;max-width:1180px;top:30svh}
.final-reveal h2 span{color:#a4aaa5;letter-spacing:-.055em;font-size:1em;font-weight:inherit;display:inline-block}
.final-reveal h2 b{color:#f2aa69;text-shadow:rgba(242,161,93,.125) 0 0 32px;margin-top:.16em;display:inline-block}
.final-reveal h2>span,.final-reveal h2>b{white-space:nowrap;width:max-content;max-width:100%;display:block}
.final-responsibility{border-top:1px solid rgba(255,255,255,.16);width:min(820px,100%);margin-top:24px}
.final-responsibility p{color:#d7d9d4;border-bottom:1px solid rgba(255,255,255,.11);grid-template-columns:64px 1fr;gap:20px;margin:0;padding:10px 0;font-size:14px;line-height:1.4;display:grid}
.final-responsibility p b{color:#f2a15d;letter-spacing:.14em;font-size:10px}
.final-dek{color:#d3d4cf;max-width:760px;margin:50px 0 0;font-size:19px;line-height:1.8}
.final-reveal .final-dek{color:#d4d6d1;max-width:780px;margin:30px 0 0;font-size:18px;line-height:1.7}
.final-reveal .final-dek b{color:#fff;font-size:1.06em}
.final-byline{color:#fff;letter-spacing:.12em;margin:65px 0 0;font-size:10px;font-weight:800}
.final-reveal .final-byline{margin-top:28px}

/* share / methods / related / footer */
.article-share{text-align:center;background:#050607;padding:64px 24px 30px}
.article-share-button{color:#ecf0ed;letter-spacing:-.02em;min-height:50px;box-shadow:none;cursor:pointer;background:0 0;border:1px solid rgba(255,255,255,.314);border-radius:100px;padding:0 26px;font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px}
.article-share-button:hover{background:rgba(255,255,255,.05);border-color:#bce9e6}
.article-share-button svg{width:18px;height:18px}
.article-share p{color:#b9c8c2;min-height:1.5em;margin:16px 0 0;font-size:13px;line-height:1.5}
.article-share+.methods-note{border-top:0;padding-top:54px;padding-bottom:30px}
.methods-note{color:#101211;background:#eceae3;border-top:12svh solid #050607;padding:72px 8vw 84px}
.methods-note details{border-top:1px solid #1a1c1b;border-bottom:1px solid #1a1c1b;width:min(1180px,100%);margin:0 auto}
.methods-note summary{cursor:pointer;grid-template-columns:100px 1fr auto;align-items:center;gap:24px;padding:26px 0;list-style:none;display:grid}
.methods-note summary::-webkit-details-marker{display:none}
.methods-note summary span{letter-spacing:.16em;font-size:9px;font-weight:900}
.methods-note summary b{letter-spacing:-.04em;font-size:clamp(20px,2.3vw,34px)}
.methods-note summary i{font-size:24px;font-style:normal;font-weight:300;transition:transform .25s}
.methods-note details[open] summary i{transform:rotate(45deg)}
.methods-body{border-top:1px solid rgba(26,28,27,.15);grid-template-columns:repeat(2,1fr);gap:0 34px;padding:22px 0 34px;display:grid}
.methods-body article{padding:20px 0}
.methods-body article>b{color:#9b5f39;letter-spacing:.13em;font-size:10px}
.methods-body article p{color:#363936;margin:14px 0 0;font-size:13px;line-height:1.75}
.related-articles{color:#191f1d;background:#eceae3;padding:24px 8vw 80px}
.related-articles h2,.related-articles ul{width:min(1180px,100%);margin:0 auto}
.related-articles h2{letter-spacing:-.05em;padding-bottom:22px;font-size:24px;font-weight:700}
.related-articles ul{border-top:1px solid #1a1c1b;padding:0;list-style:none}
.related-articles li{border-bottom:1px solid rgba(26,28,27,.15)}
.related-articles a{letter-spacing:-.035em;word-break:keep-all;overflow-wrap:anywhere;justify-content:space-between;align-items:center;gap:24px;padding:22px 0;font-size:clamp(16px,1.5vw,21px);font-weight:550;line-height:1.5;display:flex}
.related-articles a>svg{color:#687670;flex:none;width:20px;height:20px;transition:transform .2s}
.related-articles a:hover>svg{transform:translate(2px,-2px)}
.related-articles a:hover{color:#365e56}
.article-footer{letter-spacing:0;background:#090d10;border-top:1px solid rgba(255,255,255,.125);min-height:100px;padding:20px 5vw;display:grid;grid-template-columns:1fr auto 1fr;align-items:center}
.article-footer a{color:#d4ddd9;white-space:nowrap;align-items:center;min-height:44px;display:inline-flex}
.footer-visual{letter-spacing:.055em;justify-self:start;font-size:13px;font-weight:650}
.footer-top{letter-spacing:.12em;color:#a6b8b0;justify-self:center;gap:7px;font-size:12px;font-weight:500}
.footer-top svg{width:14px;height:14px}
.article-footer .footer-brand{justify-self:end;color:#75f3d1;font-family:Pretendard,"Noto Sans KR","Apple SD Gothic Neo",Arial,sans-serif;font-size:14px;font-weight:800;line-height:1;letter-spacing:.1em;white-space:nowrap}
.footer-brand .silent-i{color:rgba(237,240,234,.5)}

@keyframes hero-settle{0%{filter:blur(7px) saturate(.4);transform:scale(1.16)}100%{filter:saturate(.72) contrast(1.06) brightness(.64);transform:scale(1.04)}}
@keyframes pulse{50%{opacity:.5}}
@keyframes cascade-arrow{0%{opacity:.2;transform:translateY(-4px)}45%{opacity:1}100%{opacity:.18;transform:translateY(5px)}}

@media(max-width:820px){
  .hero-copy{padding:0 18px 7vh}
  .hero h1 span,.hero h1 strong{white-space:nowrap;font-size:clamp(32px,9.7vw,40px);line-height:1.04}
  .hero h1 strong{margin-top:10px}
  .hero h1 strong:after{bottom:-10px}
  .hero .dek{margin-top:28px;font-size:15px}
  .warming-mark{height:26vh;left:22px}
  .scroll-cue{display:none}
  .hero .photo-credit{bottom:82px}
  .collapse-passage{height:200vh}
  .collapse-sticky .new-mechanism{justify-content:center;min-height:100svh;padding:72px 22px 58px}
  .collapse-sticky .new-mechanism h2{font-size:42px}
  .collapse-sticky .new-mechanism .collapse-chain{grid-template-columns:1fr;margin-top:30px}
  .collapse-sticky .new-mechanism .collapse-chain span{border-bottom:1px solid rgba(255,255,255,.086);border-right:0;grid-template-columns:36px minmax(0,1fr);align-items:center;gap:16px;min-height:82px;padding:17px 6px;font-size:18px;display:grid;transform:translate3d(0,var(--mobile-drop),0)}
  .collapse-sticky .new-mechanism .collapse-chain span:last-child{border-bottom:0}
  .collapse-sticky .new-mechanism .collapse-chain span:nth-child(n){border-top:0}
  .collapse-sticky .new-mechanism .collapse-chain span:not(:last-child):after{content:"↓";z-index:3;color:#929a96;text-align:center;background:#0d100f;border:0;width:18px;height:18px;font:400 13px/18px Arial,sans-serif;animation:1.35s cubic-bezier(.36,.1,.26,1) infinite cascade-arrow;display:block;position:absolute;inset:auto auto -9px 9px;transform:none}
  .collapse-sticky .new-mechanism .collapse-chain span:nth-child(-n+2):after{color:#8ed9ef;text-shadow:rgba(120,205,232,.3) 0 0 9px}
  .collapse-sticky .new-mechanism .collapse-chain span:nth-child(n+3):after{color:#c99252;text-shadow:rgba(189,127,61,.26) 0 0 9px}
  .collapse-sticky .new-mechanism .collapse-chain span:nth-child(2):after{animation-delay:.16s}
  .collapse-sticky .new-mechanism .collapse-chain span:nth-child(3):after{animation-delay:.32s}
  .collapse-sticky .new-mechanism .collapse-chain span:nth-child(4):after{animation-delay:.48s}
  .collapse-sticky .new-mechanism .collapse-chain span:nth-child(5):after{animation-delay:.64s}
  .collapse-sticky .new-mechanism .collapse-chain i{width:36px;margin:0;line-height:1;position:static}
  .collapse-sticky .new-mechanism>small{margin-top:22px;font-size:clamp(9.5px,2.75vw,11px)}
  .sequence{height:520vh}
  .living-backdrop{display:none}
  .living-frame{aspect-ratio:auto;width:100%;height:100%;box-shadow:none;inset:0;transform:none}
  .living-layer{filter:saturate(.69) contrast(1.12) brightness(.72);width:104%;height:104%;inset:-2%}
  .living-grade{background:linear-gradient(rgba(4,5,6,.447) 0%,transparent 21%,transparent 40%,rgba(4,5,6,.957) 76%)}
  .living-pulse{height:13%}
  .cinematic-copy{width:auto;inset:auto 18px 15svh;transform:none}
  .cinematic-copy>div b{font-size:18px}
  .cinematic-copy h2{margin:12px 0 8px;font-size:30px}
  .cinematic-copy p{font-size:clamp(11px,3.35vw,13px);white-space:normal}
  .cinematic-steps{grid-template-columns:repeat(5,1fr);width:auto;display:grid;inset:auto 18px 8svh;transform:none}
  .cinematic-steps>div{border-top:1px solid rgba(255,255,255,.22);padding:8px 0;font-size:8px;display:block}
  .cinematic-steps>div:last-child{border-bottom:0}
  .cinematic-steps>div span{margin-bottom:4px;display:block}
  .cinematic-scrub{bottom:3.5svh;left:18px;right:18px}
  .cinematic-note{display:none}
  .reconstruction-label{top:69px;left:16px}
  .drop-readout{top:68px;right:15px}
  .video-explainer{grid-template-columns:1fr;gap:34px;min-height:108svh;padding:88px 22px 82px}
  .video-explainer:after{top:36%;left:22px;right:22px}
  .video-explainer-copy h2{font-size:40px}
  .video-explainer-copy>p:last-child{font-size:clamp(10.5px,3.15vw,13px)}
  .video-explainer .video-frame{width:min(76vw,330px);margin:0 auto;box-shadow:rgba(255,255,255,.14) 0 0 0 1px,rgba(0,0,0,.8) 0 30px 80px}
  .video-poster-kicker{top:18px;left:18px}
  .video-play{width:64px;height:64px}
  .video-poster>strong{font-size:19px;bottom:44px;left:18px;right:18px}
  .video-poster>small{bottom:19px;left:18px}
  .damage-passage{height:285vh}
  .damage-copy{bottom:11svh;left:22px;right:22px}
  .damage-copy h2{font-size:47px}
  .damage-copy>p:last-child{margin-top:22px;font-size:clamp(11px,3.2vw,13px);line-height:1.65}
  .damage-count{bottom:25px;left:22px}
  .evidence-sequence{height:570vh}
  .evidence-sticky:before{background:radial-gradient(100px at 50% 54%,#232525 0%,#0a0a0a 58%,#000 100%)}
  .evidence-head{top:7svh;left:50%;transform:translateX(-50%)}
  .evidence-head h2{letter-spacing:-.045em;font-size:clamp(13px,3.9vw,17px)}
  .evidence-stage article{min-height:42svh;width:86vw}
  .evidence-stage article>strong{font-size:clamp(110px,39vw,170px)}
  .evidence-stage article>strong.wide{letter-spacing:-.07em;font-size:clamp(84px,25vw,116px)}
  .evidence-copy{width:90vw}
  .evidence-copy h3{white-space:nowrap;font-size:clamp(31px,8.2vw,40px)}
  .evidence-copy p{white-space:nowrap;max-width:88vw;margin-top:17px;font-size:clamp(10px,2.8vw,12px);line-height:1.45}
  .evidence-copy small{margin-top:10px;font-size:7px}
  .evidence-axis{grid-template-columns:auto 80px auto;gap:9px;font-size:7px;bottom:4svh}
  .formula-stage article{width:90vw}
  .formula-stage h3{font-size:clamp(43px,12vw,58px);line-height:.96}
  .warning-gap{height:315vh}
  .warning-sticky{padding:7svh 22px}
  .warning-head{text-align:center;top:7svh;left:22px;right:22px}
  .warning-head>span{font-size:8px}
  .warning-head h2{font-size:22px}
  .warning-stage article{width:90vw}
  .warning-stage article>strong{margin-bottom:3svh;font-size:clamp(58px,17vw,78px)}
  .warning-stage h3{font-size:clamp(34px,9.4vw,44px);line-height:.95}
  .warning-stage p{margin-top:22px;font-size:clamp(11px,3vw,13px);line-height:1.62}
  .warning-rail{grid-template-columns:repeat(3,58px);bottom:15svh}
  .warning-conclusion{text-align:center;font-size:11px;bottom:7.5svh;left:22px;right:22px}
  .warning-caveat{text-align:center;width:auto;font-size:7.5px;bottom:2.2svh;left:22px;right:22px}
  .final-passage{height:240vh}
  .final-images img{object-position:58% center}
  .final-images img:nth-child(2){object-position:54% center}
  .final-shade{background:linear-gradient(rgba(5,6,7,.36) 0%,rgba(5,6,7,.74) 51%,rgba(5,6,7,.973) 100%)}
  .final-first,.final-reveal{top:40svh;inset:auto 22px 12svh}
  .final-first h2,.final-reveal h2{white-space:nowrap;font-size:35px;line-height:.98}
  .final-first>p:last-child{font-size:14px;line-height:1.65}
  .final-reveal{bottom:5.5svh}
  .final-reveal h2{white-space:normal;font-size:clamp(20px,6.25vw,28px);line-height:1.04}
  .final-responsibility{margin-top:24px}
  .final-responsibility p{grid-template-columns:48px 1fr;gap:10px;padding:10px 0;font-size:11px;line-height:1.4}
  .final-responsibility p b{font-size:8px}
  .final-reveal .final-dek{white-space:normal;margin-top:22px;font-size:12px;line-height:1.55}
  .final-reveal .final-byline{margin-top:20px}
  .methods-note{padding:54px 22px 64px}
  .methods-note summary{grid-template-columns:70px 1fr auto;gap:12px;padding:22px 0}
  .methods-note summary b{font-size:20px}
  .methods-body{grid-template-columns:1fr;padding-top:10px}
  .methods-body article{border-bottom:1px solid rgba(26,28,27,.12);padding:15px 0}
  .methods-body article p{font-size:12px;line-height:1.68}
  .article-share+.methods-note{padding-top:42px;padding-bottom:20px}
  .related-articles{padding:24px 22px 52px}
  .related-articles h2{padding-bottom:18px;font-size:22px}
  .related-articles a{gap:16px;padding:20px 0;font-size:16px}
  .article-footer{min-height:90px;padding:16px 18px}
  .footer-visual{letter-spacing:0;font-size:12px}
  .article-footer .footer-brand{font-size:clamp(8px,2.5vw,10px)}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,:before,:after{animation-duration:.01ms!important;animation-iteration-count:1!important}
  .collapse-sticky .collapse-chain span{transition:none;transform:none}
  .video-poster>img,.video-play{transition:none}
  .formula-stage article{transition:none}
  .new-mechanism .collapse-chain span:not(:last-child):after{opacity:.75;transform:none}
}