/* YNK Associates case study: every rule is scoped to .yk-page / .yk so the shared header, contact and footer stay untouched. */
.yk-page{--yk-ink:#111312;--yk-ink2:#181a19;--yk-char:#1a1c1b;--yk-paper:#f3f1eb;--yk-paper2:#e9e6de;--yk-card:#fbfaf6;--yk-orange:#f16022;--yk-orange-ink:#b4430f;--yk-verm:#ff5a36;--yk-brass:#c9a05a;--yk-brass-hi:#e6c88f;--yk-ember:#c8501a;--yk-sub:#a9ada6;--yk-isub:#5a5e58;--yk-dline:#f3f1eb24;--yk-lline:#1a1c1b24;--yk-sans:'Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo',sans-serif;--yk-mono:'IBM Plex Mono','Pretendard Variable',Pretendard,ui-monospace,monospace;--yk-serif:'Instrument Serif','Times New Roman',serif;--yk-ease:cubic-bezier(.2,.7,.1,1);background:var(--yk-ink)}
.yk-page .site-header{position:fixed;inset:0 0 auto;background:rgba(17,19,18,.84);border-bottom-color:#ffffff14}
.yk-page .site-header .container{background:transparent;box-shadow:none}
.yk-page.yk-at-hero .site-consult-bar{visibility:hidden;pointer-events:none}
.yk-skip{position:fixed;z-index:2000;left:12px;top:-60px;padding:12px 18px;border-radius:8px;background:#fff;color:#000;font-weight:700}
.yk-skip:focus{top:12px}
.yk{position:relative;color:var(--yk-paper);background:var(--yk-ink);font-family:var(--yk-sans);font-size:17px;line-height:1.75;word-break:keep-all;overflow-wrap:anywhere;overflow-x:clip;-webkit-font-smoothing:antialiased}
.yk *{box-sizing:border-box}
.yk [hidden]{display:none!important}
.yk :where(h1,h2,h3,h4,p,figure,dl,dd,ul,ol,blockquote){margin:0;padding:0}
.yk :where(h1,h2,h3,h4){font-weight:800;line-height:1.22;letter-spacing:-.045em;text-wrap:balance}
.yk :where(p){text-wrap:pretty}
.yk :where(ul,ol){list-style:none}
.yk :where(a){color:inherit;text-decoration:none}
.yk :where(button){font:inherit;color:inherit;cursor:pointer;background:none;border:0;padding:0}
.yk :where(img,video,svg,canvas){display:block;max-width:100%}
.yk :where(img,video){height:auto}
.yk em{font-style:normal;color:var(--yk-orange)}
.yk-light em{color:var(--yk-orange-ink)}
.yk code{font-family:var(--yk-mono);white-space:nowrap}
.yk :is(a,button,input):focus-visible{outline:3px solid var(--yk-orange);outline-offset:5px;border-radius:6px}
.yk-light :is(a,button,input):focus-visible{outline-color:var(--yk-orange-ink)}
.yk section[id]{scroll-margin-top:84px}
.yk-wrap{width:calc(100% - 12vw);max-width:1440px;margin-inline:auto}
.yk-sec{position:relative;padding-block:clamp(96px,10vw,170px)}
.yk-light{background:var(--yk-paper);color:var(--yk-char)}
.yk-eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:var(--yk-mono);font-size:14px;font-weight:600;line-height:1.5;letter-spacing:.14em;color:var(--yk-orange)}
.yk-eyebrow::before{content:"";width:28px;height:1px;background:currentColor;opacity:.7}
.yk-light .yk-eyebrow{color:var(--yk-orange-ink)}
.yk-sectionhead{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;padding-bottom:22px;margin-bottom:clamp(48px,6vw,90px);border-bottom:1px solid var(--yk-dline);font-size:15px;line-height:1.5;color:var(--yk-sub)}
.yk-sectionhead>span:first-child{font-family:var(--yk-mono);font-weight:600;letter-spacing:.12em;color:var(--yk-orange)}
.yk-sectionhead>span:last-child{justify-self:end}
.yk-light .yk-sectionhead{border-bottom-color:var(--yk-lline);color:var(--yk-isub)}
.yk-light .yk-sectionhead>span:first-child{color:var(--yk-orange-ink)}
.yk-steps-dots{display:flex;gap:6px}
.yk-steps-dots i{width:22px;height:4px;border-radius:2px;background:currentColor;opacity:.22}
.yk-steps-dots i.is-on{opacity:1;background:var(--yk-orange)}
.yk-light .yk-steps-dots i.is-on{background:var(--yk-orange-ink)}
.yk h2{font-size:clamp(34px,4vw,64px)}
.yk-split{display:grid;grid-template-columns:1.15fr 1fr;gap:7vw;align-items:start}
.yk-prose{padding-top:8px}
.yk-prose p{max-width:600px;color:var(--yk-sub);font-size:18px}
.yk-light .yk-prose p{color:var(--yk-isub)}
.yk-prose p+p{margin-top:22px}
.yk-pill{display:inline-flex;align-items:center;gap:22px;height:62px;padding:0 30px;border-radius:99px;background:var(--yk-orange);color:var(--yk-ink)!important;font-weight:700;font-size:17px;transition:transform .3s,background .3s}
.yk-pill:hover{transform:translateY(-3px);background:var(--yk-paper)}
.yk-textlink{display:inline-flex;align-items:center;gap:32px;padding:12px 0;border-bottom:1.5px solid currentColor;color:var(--yk-paper)!important;font-size:16px;font-weight:600;line-height:1.5}
.yk-textlink span{font-size:22px;transition:transform .3s}
.yk-textlink:hover span{transform:translateX(4px)}
.yk-note-small{margin-top:26px;font-size:14px;color:var(--yk-isub)}
.yk-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:99px;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.04em;line-height:1.4;white-space:nowrap}
.yk-tag--a{background:var(--yk-verm);color:var(--yk-ink)}
.yk-tag--b{background:var(--yk-brass);color:#0b0a09}
.yk-tag--x{box-shadow:inset 0 0 0 1px #f3f1eb66;color:var(--yk-paper)}

/* reveal */
.yk-js .yk-rv{opacity:0;transform:translateY(34px);transition:opacity .9s var(--yk-ease),transform .9s var(--yk-ease);transition-delay:var(--d,0ms)}
.yk-js .yk-rv.is-in{opacity:1;transform:none}

/* ---------------------------------------------------------------- 00 HERO */
.yk-hero{position:relative;height:100vh;height:100svh;background:var(--yk-ink)}
html.yk-motion .yk-hero{height:440vh;--t:0;--d:0}
.yk-hero__pin{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;background:var(--yk-ink)}
.yk-hero__rooms{position:absolute;z-index:0;inset:0;display:grid;grid-template-columns:1fr 1fr;background:#000}
html.yk-motion .yk-hero:not(.is-doors) .yk-hero__rooms{visibility:hidden}
.yk-room{position:relative;overflow:hidden}
.yk-room img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(calc(1.16 - var(--d,1) * .16));transform-origin:var(--o,50% 50%)}
.yk-room--a img{object-position:86% 50%;--o:100% 50%}
.yk-room--b img{object-position:38% 50%;--o:0 50%}
.yk-room::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#111312b3,#11131200 70%)}
.yk-room--b::after{background:linear-gradient(270deg,#0b0a09b3,#0b0a0900 70%)}
.yk-room__name{position:absolute;z-index:2;top:50%;margin:0;transform:translateY(-50%);opacity:calc(var(--d,1) * (1 - var(--t,0)));pointer-events:none}
.yk-room--a .yk-room__name{left:5vw;font-size:clamp(40px,5.6vw,104px);font-weight:500;line-height:.98;letter-spacing:-.065em;color:#f3f1eb}
.yk-room--a .yk-room__name i{font-style:normal;color:var(--yk-verm)}
.yk-room--b .yk-room__name{right:5vw;font-family:var(--yk-serif);font-style:italic;font-size:clamp(46px,6.4vw,118px);line-height:1;letter-spacing:-.01em;color:#f3eee6;text-align:right;white-space:nowrap}
.yk-room--b .yk-room__name b{font-weight:400;color:var(--yk-brass-hi)}
.yk-room figcaption{position:absolute;z-index:2;bottom:12vh;display:flex;align-items:baseline;gap:14px;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.14em;color:var(--yk-paper);opacity:calc(var(--d,1) * (1 - var(--t,0) * .35));text-shadow:0 2px 18px #000c}
.yk-room--a figcaption{left:5vw}
.yk-room--b figcaption{right:5vw}
.yk-room figcaption b{font-family:var(--yk-sans);font-size:clamp(40px,4vw,64px);font-weight:800;letter-spacing:-.04em;line-height:1}
.yk-room--a figcaption b{color:var(--yk-verm)}
.yk-room--b figcaption b{color:var(--yk-brass)}
.yk-hero__seam{position:absolute;z-index:1;left:50%;top:0;bottom:0;width:2px;transform:translateX(-50%);background:var(--yk-orange);box-shadow:0 0 22px 3px #f16022aa}
.yk-hero__shade{position:absolute;z-index:1;inset:0;background:radial-gradient(70% 70% at 50% 50%,#111312d9 0,#111312a6 55%,#11131266 100%),linear-gradient(0deg,#111312e6 0,#11131200 34%);opacity:calc(.36 + var(--t,1) * .64);pointer-events:none}
.yk-hero__doors{position:absolute;z-index:3;inset:0;display:grid;grid-template-columns:1fr 1fr;perspective:1800px;visibility:hidden;pointer-events:none}
.yk-hero.is-doors .yk-hero__doors{visibility:visible}
.yk-door{position:relative;overflow:hidden;background:var(--yk-orange);will-change:transform;--kw:clamp(30px,3.2vw,50px)}
.yk-door--l{transform-origin:0 50%;transform:rotateY(calc(var(--d,0) * -96deg))}
.yk-door--r{transform-origin:100% 50%;transform:rotateY(calc(var(--d,0) * 96deg))}
.yk-door::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#00000033,#00000000 40%);opacity:calc(var(--d,0) * 1.6)}
.yk-door--r::after{background:linear-gradient(270deg,#00000033,#00000000 40%)}
.yk-door__hole{position:absolute;top:50%;width:var(--kw);height:calc(var(--kw) * 1.9);transform:translateY(-50%);background:var(--yk-ink);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 76'%3E%3Cpath d='M20 2a17 17 0 0 1 9.4 31.2L34 74H6l4.6-40.8A17 17 0 0 1 20 2z'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 76'%3E%3Cpath d='M20 2a17 17 0 0 1 9.4 31.2L34 74H6l4.6-40.8A17 17 0 0 1 20 2z'/%3E%3C/svg%3E") center/contain no-repeat}
.yk-door--l .yk-door__hole{right:calc(var(--kw) * -.5)}
.yk-door--r .yk-door__hole{left:calc(var(--kw) * -.5)}
.yk-hero__fill{position:absolute;z-index:3;inset:0;background:var(--yk-orange);clip-path:circle(var(--fr,0px) at var(--fx,50%) var(--fy,50%));visibility:hidden;pointer-events:none}
.yk-hero.is-fill .yk-hero__fill{visibility:visible}
.yk-hero.is-doors .yk-hero__fill{visibility:hidden}
.yk-hero__word{position:absolute;z-index:2;left:0;right:0;top:50%;margin:0;display:flex;justify-content:center;align-items:flex-end;transform:translateY(-58%) scale(calc(1 + var(--c,0) * var(--grow,.4)));font-size:clamp(40px,12.4vw,232px);font-weight:800;line-height:.86;letter-spacing:-.055em;color:var(--yk-paper);white-space:nowrap;pointer-events:none}
.yk-hero__word span{display:inline-block}
.yk-hero.is-measured .yk-hero__word :is(.yk-r,.yk-sp){overflow:hidden;width:calc(var(--w,0) * (1 - var(--c,0)) * 1px);opacity:calc(1 - var(--c,0) * 1.6)}
.yk-hero__word .yk-sp{white-space:pre}
.yk-hero__word .yk-dot{width:.19em;height:.19em;margin:0 0 .015em .06em;border-radius:50%;background:var(--yk-orange);transform:scale(var(--dot,0))}
.yk-hero.is-doors .yk-hero__word{visibility:hidden}
.yk-hero__top{position:absolute;z-index:5;left:6vw;right:6vw;top:112px;display:flex;justify-content:space-between;gap:20px;font-family:var(--yk-mono);font-size:14px;font-weight:500;letter-spacing:.14em;color:#f3f1eb8c;opacity:calc(1 - var(--f,0))}
.yk-hero__subs{position:absolute;z-index:5;left:0;right:0;bottom:17vh;height:0}
.yk-sub{position:absolute;left:50%;bottom:0;width:max-content;max-width:88vw;text-align:center;font-size:clamp(22px,2.3vw,36px);font-weight:700;line-height:1.42;letter-spacing:-.035em;color:var(--yk-paper);text-shadow:0 2px 24px #000b;opacity:0;transform:translate(-50%,22px);transition:opacity .6s,transform .8s var(--yk-ease)}
.yk-sub.is-on{opacity:1;transform:translate(-50%,0)}
.yk-sub__tag{display:block;margin-bottom:12px;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.16em;color:var(--yk-orange)}
.yk-sub--ink{color:var(--yk-ink);text-shadow:none}
.yk-sub--ink em{color:#fff}
.yk-sub--ink .yk-sub__tag{color:var(--yk-ink)}
.yk-hero__title{position:absolute;z-index:6;left:50%;top:50%;width:min(1000px,88vw);text-align:center;transform:translate(-50%,calc(-50% + (1 - var(--t,1)) * 40px));opacity:var(--t,1);pointer-events:none}
.yk-hero__title.is-live{pointer-events:auto}
html:not(.yk-motion) .yk-hero__title{pointer-events:auto}
.yk-hero__title .yk-eyebrow::before{display:none}
.yk-hero__title h1{margin-top:20px;font-size:clamp(38px,5.4vw,92px);line-height:1.1;letter-spacing:-.05em;text-shadow:0 4px 40px #0008}
.yk-hero__title h1 span{display:block}
.yk-hero__lead{margin-top:24px;font-size:clamp(17px,1.4vw,21px);font-weight:600;line-height:1.6}
.yk-hero__lead span{color:var(--yk-sub);font-weight:500}
.yk-hero__down{display:inline-flex;align-items:center;gap:14px;margin-top:32px;padding:14px 24px;border-radius:99px;border:1px solid #f3f1eb66;color:var(--yk-paper)!important;font-size:16px;font-weight:700;transition:background .3s,color .3s}
.yk-hero__down:hover{background:var(--yk-paper);color:var(--yk-ink)!important}
.yk-hero__hud{position:absolute;z-index:6;left:6vw;right:6vw;bottom:4.2vh;display:flex;align-items:center;gap:20px;font-family:var(--yk-mono);font-size:14px;font-weight:500;letter-spacing:.08em;color:#f3f1ebb3;white-space:nowrap}
.yk-hero.is-orange .yk-hero__hud{color:#111312cc}
.yk-hero__step{color:var(--yk-orange)}
.yk-hero.is-orange .yk-hero__step{color:var(--yk-ink)}
.yk-hero.is-orange .yk-hero__bar{background:#1113122e}
.yk-hero__bar{flex:1;height:2px;background:#f3f1eb26}
.yk-hero__bar i{display:block;height:100%;background:currentColor;transform:scaleX(var(--p,0));transform-origin:left}
.yk-hero__hint{letter-spacing:.24em;opacity:calc(1 - var(--t,0))}
html:not(.yk-motion) :is(.yk-hero__word,.yk-hero__fill,.yk-hero__doors,.yk-hero__subs,.yk-hero__hud,.yk-hero__top){display:none}

/* ---------------------------------------------------------------- STEP 01 CLIENT ORDER */
.yk-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:clamp(56px,6vw,90px);padding-top:28px;border-top:1px solid var(--yk-lline)}
.yk-meta dt{font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.14em;color:var(--yk-orange-ink)}
.yk-meta dd{margin-top:8px;font-size:16px;line-height:1.65;color:var(--yk-char)}
.yk-stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:clamp(56px,6vw,90px);border-top:1.5px solid var(--yk-char)}
.yk-stats li{padding:26px 24px 0 0;border-right:1px solid var(--yk-lline)}
.yk-stats li+li{padding-left:24px}
.yk-stats li:last-child{border-right:0}
.yk-stats strong{display:flex;align-items:baseline;gap:6px;font-size:clamp(60px,6.6vw,118px);font-weight:800;line-height:1;letter-spacing:-.055em;font-variant-numeric:tabular-nums}
.yk-stats strong small{font-size:.36em;letter-spacing:-.02em}
.yk-stats li:nth-child(4) strong b{color:var(--yk-orange-ink)}
.yk-stats span{display:block;margin-top:12px;font-size:15px;font-weight:600;color:var(--yk-isub)}
.yk-rail{margin-top:clamp(100px,10vw,170px)}
.yk-rail__head{display:grid;grid-template-columns:1.15fr 1fr;gap:7vw;align-items:end}
.yk-rail__head .yk-eyebrow{grid-column:1/-1}
.yk-rail__head h3{font-size:clamp(28px,2.8vw,44px)}
.yk-rail__head p{max-width:560px;color:var(--yk-isub);font-size:17px}
.yk-rail__list{position:relative;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));margin-top:clamp(36px,4vw,60px);border-top:1.5px solid var(--yk-char)}
.yk-rail__list li a{position:relative;display:flex;flex-direction:column;gap:10px;height:100%;padding:22px 16px 26px 0;border-right:1px solid var(--yk-lline);transition:background .35s}
.yk-rail__list li:not(:first-child) a{padding-left:16px}
.yk-rail__list li:last-child a{border-right:0}
.yk-rail__list li a::before{content:"";position:absolute;left:0;top:-5px;width:9px;height:9px;border-radius:50%;background:var(--yk-orange-ink);box-shadow:0 0 0 5px #b4430f22}
.yk-rail__list li:not(:first-child) a::before{left:16px}
.yk-rail__list li a:hover{background:#fbfaf6}
.yk-rail__no{font-family:var(--yk-mono);font-size:15px;font-weight:600;color:var(--yk-orange-ink)}
.yk-rail__list b{font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.06em;line-height:1.4}
.yk-rail__list dl{display:grid;gap:10px;margin-top:4px}
.yk-rail__list dt{font-size:14px;font-weight:700;color:var(--yk-isub)}
.yk-rail__list dd{font-size:15px;line-height:1.55;color:var(--yk-char)}
.yk-rail__list div+div dd{font-weight:600}
.yk-rail__go{margin-top:auto;padding-top:10px;font-size:20px;color:var(--yk-orange-ink);transition:transform .3s}
.yk-rail__list a:hover .yk-rail__go{transform:translate(3px,3px)}

/* ---------------------------------------------------------------- STEP 02 JOB DESCRIPTION */
.yk-jd{background:radial-gradient(70% 60% at 86% 8%,#2b170c 0,var(--yk-ink) 62%)}
.yk-quote{max-width:1200px;font-size:clamp(28px,3.3vw,54px);font-weight:700;line-height:1.45;letter-spacing:-.04em}
.yk-quote span{opacity:.18;transition:opacity .4s}
.yk-quote span.is-on{opacity:1}
html:not(.yk-js) .yk-quote span,html:not(.yk-motion) .yk-quote span{opacity:1}
.yk-before{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(40px,6vw,110px);align-items:start;margin-top:clamp(80px,9vw,150px)}
.yk-oldsite__win{position:relative;overflow:hidden;border-radius:14px;background:#fff;color:#222;box-shadow:0 50px 90px -40px #000c}
.yk-oldsite__bar{display:flex;gap:6px;height:30px;align-items:center;padding:0 14px;background:#e9e6e0}
.yk-oldsite__bar i{width:9px;height:9px;border-radius:50%;background:#c9c4bb}
.yk-oldsite__head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 8%;background:#3a3a3a}
.yk-oldsite__logo{display:grid;line-height:1.1;color:#fff}
.yk-oldsite__logo b{font-size:17px;font-weight:800;letter-spacing:-.01em}
.yk-oldsite__logo small{font-size:14px;letter-spacing:.32em;color:#ddd;transform:scale(.6);transform-origin:left;white-space:nowrap}
.yk-oldsite__menu{display:flex;gap:7px}
.yk-oldsite__menu i{width:30px;height:5px;border-radius:2px;background:#9a9a9a}
.yk-oldsite__slide{position:relative;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:6%;height:150px;padding:0 8%;background:linear-gradient(120deg,#b9b4aa,#e4e0d8 60%,#cfcac1)}
.yk-oldsite__slide span{display:grid;justify-items:center;gap:6px;text-align:center;color:#fff;text-shadow:0 1px 6px #0006}
.yk-oldsite__slide b{font-size:20px;font-weight:800;letter-spacing:.01em}
.yk-oldsite__slide small{font-size:14px;transform:scale(.72);white-space:nowrap}
.yk-oldsite__slide em{padding:4px 10px;border-radius:3px;background:var(--yk-orange);color:#fff!important;font-size:14px;font-weight:700;transform:scale(.7);text-shadow:none;white-space:nowrap}
.yk-oldsite__slide i{height:100px;border:5px solid #cfcfcf;background:radial-gradient(circle at 70% 60%,#f3c432 0 26%,transparent 27%),radial-gradient(circle at 30% 35%,#f3c43299 0 14%,transparent 15%),repeating-conic-gradient(#fff 0 25%,#ddd 0 50%) 0 0/24px 24px}
.yk-oldsite__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;padding:18px 8% 14px}
.yk-oldsite__cols div{display:grid;gap:6px;min-width:0}
.yk-oldsite__cols b{font-size:14px;font-weight:800;transform:scale(.78);transform-origin:left;white-space:nowrap;color:#333}
.yk-oldsite__cols i{height:42px;background:linear-gradient(135deg,#888,#d8d8d8)}
.yk-oldsite__cols s{height:5px;border-radius:2px;background:#d8d8d8}
.yk-oldsite__cols s:nth-of-type(2){width:70%}
.yk-oldsite__quick{display:flex;align-items:center;gap:10px;margin:0 8% 18px;padding-top:12px;border-top:1px solid #e2e2e2;color:#444}
.yk-oldsite__quick b{font-size:14px;font-weight:800;transform:scale(.8);transform-origin:left;white-space:nowrap}
.yk-oldsite__quick svg{width:22px;height:11px;color:#555}
.yk-oldsite__quick span{padding:3px 8px;border:1px solid #ccc;border-radius:3px;font-size:14px;font-weight:700;transform:scale(.66);transform-origin:left;white-space:nowrap}
.yk-pin{position:absolute;z-index:2;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--yk-orange);color:#fff;font-family:var(--yk-mono);font-size:14px;font-weight:600;box-shadow:0 0 0 6px #f1602240}
.yk-pin--1{right:6%;top:42px}
.yk-pin--2{left:4%;top:110px}
.yk-pin--3{left:43%;top:250px}
.yk-pin--4{left:34%;bottom:12px}
.yk-oldsite figcaption{margin-top:26px}
.yk-oldsite figcaption b{font-size:16px}
.yk-oldsite ol{display:grid;gap:10px;margin-top:12px}
.yk-oldsite li{display:flex;gap:12px;font-size:16px;line-height:1.6;color:var(--yk-sub)}
.yk-oldsite li span{flex:none;display:grid;place-items:center;width:24px;height:24px;margin-top:2px;border-radius:50%;background:var(--yk-orange);color:#fff;font-family:var(--yk-mono);font-size:14px;font-weight:600}
.yk-jdwrap__head h2{margin-top:16px;font-size:clamp(30px,3vw,48px)}
.yk-jdwrap__head>p{margin-top:18px;max-width:560px;font-size:17px;color:var(--yk-sub)}
.yk-doc{position:relative;margin-top:34px;padding:30px 30px 26px;border-radius:6px;background:var(--yk-paper);color:var(--yk-char);box-shadow:0 40px 80px -40px #000d}
.yk-doc::before{content:"";position:absolute;left:0;right:0;top:0;height:6px;border-radius:6px 6px 0 0;background:var(--yk-orange)}
.yk-doc__head{display:flex;justify-content:space-between;gap:16px;padding-bottom:16px;border-bottom:1.5px solid var(--yk-char);font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.12em}
.yk-doc__head span:last-child{color:var(--yk-isub);letter-spacing:.06em}
.yk-doc__info{display:grid;gap:8px;padding:16px 0;border-bottom:1px dashed #1a1c1b40}
.yk-doc__info div{display:grid;grid-template-columns:96px 1fr;gap:14px;font-size:15px;line-height:1.55}
.yk-doc__info dt{font-weight:700;color:var(--yk-isub)}
.yk-doc__label{margin-top:18px;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.12em;color:var(--yk-orange-ink)}
.yk-doc__list li{display:grid;grid-template-columns:28px 1fr;gap:12px;padding:12px 0;border-bottom:1px dashed #1a1c1b2e}
.yk-doc__list strong{display:block;font-size:17px;line-height:1.45;letter-spacing:-.02em}
.yk-doc__list p{margin-top:4px;font-size:15px;line-height:1.6;color:var(--yk-isub)}
.yk-check{position:relative;width:22px;height:22px;margin-top:2px;border-radius:5px;box-shadow:inset 0 0 0 1.5px #1a1c1b66;transition:background .35s,box-shadow .35s}
.yk-check::after{content:"";position:absolute;left:7px;top:3px;width:6px;height:11px;border:solid #fff;border-width:0 2.5px 2.5px 0;transform:rotate(45deg) scale(0);transition:transform .35s var(--yk-ease)}
.yk-doc__list li.is-on .yk-check{background:var(--yk-orange-ink);box-shadow:none}
.yk-doc__list li.is-on .yk-check::after{transform:rotate(45deg) scale(1)}
html:not(.yk-motion) .yk-doc__list .yk-check{background:var(--yk-orange-ink);box-shadow:none}
html:not(.yk-motion) .yk-doc__list .yk-check::after{transform:rotate(45deg) scale(1)}
.yk-doc__foot{position:relative;display:flex;align-items:center;gap:14px;margin-top:20px;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.08em;color:var(--yk-isub)}
.yk-doc__foot b{color:var(--yk-char);font-size:16px}
.yk-doc__stamp{position:absolute;right:4px;bottom:-6px;display:grid;place-items:center;width:104px;height:104px;border:3px solid var(--yk-orange-ink);border-radius:50%;color:var(--yk-orange-ink);font-size:14px;font-weight:600;line-height:1.25;letter-spacing:.14em;text-align:center;opacity:0;transform:rotate(-14deg) scale(1.6);transition:opacity .4s,transform .5s var(--yk-ease)}
.yk-doc.is-done .yk-doc__stamp{opacity:.9;transform:rotate(-14deg) scale(1)}
html:not(.yk-motion) .yk-doc__stamp{opacity:.9;transform:rotate(-14deg)}

/* ---------------------------------------------------------------- STEP 03 SEARCH */
.yk-search{padding-bottom:clamp(90px,9vw,150px);background:radial-gradient(60% 50% at 12% 4%,#2a1c0c 0,#0f100f 60%)}
.yk-read{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:clamp(30px,5vw,90px);width:calc(100% - 12vw);max-width:1440px;margin:clamp(40px,5vw,80px) auto 0}
.yk-read__stage{position:sticky;top:0;height:100vh;display:grid;place-items:center;align-content:center;gap:24px}
.yk-read__canvas{position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;border-radius:22px;background:radial-gradient(70% 70% at 50% 45%,#1b1a17 0,#0d0d0c 75%);box-shadow:inset 0 0 0 1px #f3f1eb1a}
.yk-v{position:absolute;inset:0;display:grid;place-items:center;opacity:0;transition:opacity .7s;pointer-events:none}
.yk-read__stage[data-clue="1"] .yk-v--quote,.yk-read__stage[data-clue="2"] .yk-v--key,.yk-read__stage[data-clue="3"] .yk-v--door,.yk-read__stage[data-clue="4"] .yk-v--sides,.yk-read__stage[data-clue="5"] .yk-v--ynk{opacity:1}
.yk-v--quote{align-content:center;justify-items:center;gap:22px;padding:0 9%;text-align:center}
.yk-v__cap{font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.14em;color:var(--yk-sub)}
.yk-v--quote p{font-size:clamp(22px,2.4vw,40px);font-weight:700;line-height:1.4;letter-spacing:-.04em;color:var(--yk-paper);transform:translateY(16px);transition:transform 1s var(--yk-ease)}
.yk-v--quote em{font-family:var(--yk-serif);font-style:italic;font-weight:400;font-size:1.4em;letter-spacing:-.01em;line-height:1;color:var(--yk-orange)}
.yk-read__stage[data-clue="1"] .yk-v--quote p{transform:none}
.yk-v__key{width:min(34%,220px);opacity:.75}
.yk-v__key svg{width:100%;stroke:var(--yk-brass);stroke-width:5;stroke-linecap:round;stroke-linejoin:round}
.yk-v--key svg{width:72%;stroke:var(--yk-brass);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.yk-v--key svg *{stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset 1.6s var(--yk-ease)}
.yk-read__stage[data-clue="2"] .yk-v--key svg *{stroke-dashoffset:0}
.yk-found{position:absolute;display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border-radius:99px;background:#f3f1eb14;box-shadow:inset 0 0 0 1px #c9a05a66;color:var(--yk-brass-hi);font-size:15px;font-weight:700;opacity:0;transform:translateY(12px);transition:opacity .6s,transform .6s var(--yk-ease)}
.yk-found::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--yk-brass)}
.yk-found--1{left:7%;top:12%;transition-delay:.5s}
.yk-found--2{right:7%;top:20%;transition-delay:.8s}
.yk-found--3{right:16%;bottom:12%;transition-delay:1.1s}
.yk-read__stage[data-clue="2"] .yk-found{opacity:1;transform:none}
.yk-v--door{align-content:center;gap:26px}
.yk-v__frame{position:relative;width:min(19%,150px);aspect-ratio:1/1.9;border:3px solid #6b5a3e;perspective:900px;background:linear-gradient(90deg,#1a1006,#3a1b08)}
.yk-v__light{position:absolute;inset:0;background:linear-gradient(90deg,#f16022 0,#ff9a5c 50%,#f16022);box-shadow:0 0 80px 20px #f1602277;opacity:0;transition:opacity 1s .3s}
.yk-v__leaf{position:absolute;inset:0;background:linear-gradient(90deg,#2b2620,#191714);transform-origin:0 50%;transition:transform 1.4s var(--yk-ease) .2s;box-shadow:inset 0 0 0 1px #c9a05a33}
.yk-v__leaf i{position:absolute;right:14%;top:50%;width:10px;height:18px;margin-top:-9px;border-radius:5px 5px 2px 2px;background:var(--yk-brass)}
.yk-read__stage[data-clue="3"] .yk-v__light{opacity:1}
.yk-read__stage[data-clue="3"] .yk-v__leaf{transform:rotateY(-58deg)}
.yk-v--door p{font-size:clamp(20px,1.8vw,28px);font-weight:700;letter-spacing:-.03em;color:var(--yk-paper)}
.yk-v--sides{grid-template-columns:1fr 1fr;place-items:stretch;padding:12% 10%}
.yk-half{display:grid;align-content:center;gap:10px;padding:0 8%;border-radius:999px 0 0 999px;background:#c9a05a1f;box-shadow:inset 0 0 0 1px #c9a05a55;transform:translateX(-26%);opacity:.3;transition:transform 1.1s var(--yk-ease),opacity .8s}
.yk-half--r{border-radius:0 999px 999px 0;text-align:right;background:#f160221f;box-shadow:inset 0 0 0 1px #f1602266;transform:translateX(26%)}
.yk-half small{font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.14em;color:var(--yk-brass-hi)}
.yk-half--r small{color:var(--yk-orange)}
.yk-half b{font-size:clamp(17px,1.6vw,26px);line-height:1.35;letter-spacing:-.03em}
.yk-read__stage[data-clue="4"] .yk-half{transform:none;opacity:1}
.yk-v__center{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:grid;place-items:center;width:clamp(90px,9vw,140px);aspect-ratio:1;border-radius:50%;background:var(--yk-ink);box-shadow:0 0 0 1px #f3f1eb33;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.08em;line-height:1.3;text-align:center;color:var(--yk-paper)}
.yk-v--ynk{align-content:center;gap:30px}
.yk-v--ynk p{font-size:clamp(34px,5vw,84px);font-weight:800;letter-spacing:-.05em;line-height:1;color:#f3f1eb3d;white-space:nowrap}
.yk-v--ynk b{display:inline-block;color:var(--yk-orange);transform:translateY(0);transition:transform .8s var(--yk-ease),color .6s}
.yk-read__stage[data-clue="5"] .yk-v--ynk b{transform:translateY(-8px)}
.yk-v__chip{display:inline-flex;align-items:center;gap:12px;padding:8px 16px 8px 8px;border-radius:99px;background:#f3f1eb12;font-family:var(--yk-mono);font-size:15px;font-weight:600;color:var(--yk-paper)}
.yk-v__chip i{width:28px;height:28px;border-radius:50%;background:var(--yk-orange)}
.yk-read__dots{display:flex;gap:8px}
.yk-read__dots li{width:28px;height:3px;border-radius:2px;background:#f3f1eb33;transition:background .4s,width .4s}
.yk-read__stage[data-clue="1"] .yk-read__dots li:nth-child(1),.yk-read__stage[data-clue="2"] .yk-read__dots li:nth-child(2),.yk-read__stage[data-clue="3"] .yk-read__dots li:nth-child(3),.yk-read__stage[data-clue="4"] .yk-read__dots li:nth-child(4),.yk-read__stage[data-clue="5"] .yk-read__dots li:nth-child(5){width:46px;background:var(--yk-orange)}
.yk-read__steps{padding-bottom:16vh}
.yk-step{min-height:84vh;display:flex;flex-direction:column;justify-content:center;opacity:.22;transition:opacity .6s}
.yk-step.is-on{opacity:1}
.yk-step__tag{font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.14em;color:var(--yk-orange)}
.yk-step h3{margin-top:14px;font-size:clamp(32px,3.4vw,56px)}
.yk-step p{margin-top:20px;max-width:520px;font-size:18px;color:var(--yk-sub)}
html:not(.yk-js) .yk-step{opacity:1}
.yk-fork{margin-top:clamp(40px,5vw,80px);padding-top:clamp(40px,4vw,60px);border-top:1px solid var(--yk-dline)}
.yk-fork h3{margin-top:16px;font-size:clamp(30px,3vw,48px)}
.yk-fork__grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:clamp(30px,3vw,50px)}
.yk-fork__card{display:flex;flex-direction:column;gap:10px;padding:28px 30px 32px;border-radius:22px;background:#131515;box-shadow:inset 0 0 0 1px #ff5a3640}
.yk-fork__card--b{background:#0b0a09;box-shadow:inset 0 0 0 1px #c9a05a55}
.yk-fork__card svg{width:100%;max-width:340px;height:auto;margin-bottom:12px;overflow:visible}
.yk-fork__card svg path{fill:none;stroke-width:3;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset 1.8s var(--yk-ease) .3s}
.yk-fork.is-in svg path{stroke-dashoffset:0}
html:not(.yk-js) .yk-fork svg path{stroke-dashoffset:0}
.yk-fork__card--a svg path{stroke:var(--yk-verm)}
.yk-fork__card--a svg circle{fill:var(--yk-brass)}
.yk-fork__card--b svg path,.yk-fork__card--b svg circle{stroke:var(--yk-brass);stroke-width:3;fill:none}
.yk-fork__card>span{font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.1em;color:var(--yk-verm)}
.yk-fork__card--b>span{color:var(--yk-brass-hi)}
.yk-fork__card b{font-size:clamp(28px,2.6vw,42px);font-weight:500;letter-spacing:-.06em;line-height:1.05}
.yk-fork__card--b b{font-family:var(--yk-serif);font-style:italic;font-weight:400;letter-spacing:-.01em;font-size:clamp(34px,3.2vw,52px);color:var(--yk-brass-hi)}
.yk-fork__card p{margin-top:6px;max-width:520px;font-size:16px;color:var(--yk-sub)}

/* ---------------------------------------------------------------- STEP 03 · MOODBOARD */
.yk-mood{position:relative;background:#0c0d0d}
.yk-mood__pin{padding-block:clamp(96px,10vw,160px) 60px}
.yk-mood__head .yk-sectionhead{margin-bottom:clamp(30px,3.4vw,54px)}
.yk-mood__head h2{font-size:clamp(32px,3.4vw,56px)}
.yk-mood__viewport{margin-top:clamp(36px,4vw,64px);overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none}
.yk-mood__viewport::-webkit-scrollbar{display:none}
.yk-mood__track{display:flex;align-items:flex-start;gap:clamp(18px,2.4vw,40px);width:max-content;padding-inline:6vw}
.yk-shot{flex:none;scroll-snap-align:center}
.yk-shot figure{display:grid;gap:14px}
.yk-shot__img{overflow:hidden;border-radius:14px;background:#151515}
.yk-shot__img img{width:100%;height:100%;object-fit:cover;transform:scale(1.12);transition:transform 1.8s var(--yk-ease)}
.yk-shot.is-seen .yk-shot__img img{transform:none}
.yk-shot--0 .yk-shot__img{width:min(46vw,760px);aspect-ratio:16/10}
.yk-shot--1 .yk-shot__img{width:min(26vw,430px);aspect-ratio:4/5;margin-top:8vh}
.yk-shot--2 .yk-shot__img{width:min(34vw,560px);aspect-ratio:1/1}
.yk-shot figcaption{display:grid;grid-template-columns:auto auto 1fr;align-items:baseline;gap:8px 14px}
.yk-shot__no{font-family:var(--yk-mono);font-size:14px;color:var(--yk-sub)}
.yk-shot figcaption b{font-size:clamp(22px,2vw,32px);font-weight:800;letter-spacing:-.04em;line-height:1}
.yk-shot figcaption strong{font-size:18px}
.yk-shot figcaption small{grid-column:1/-1;justify-self:start}
.yk-mood__bar{display:flex;align-items:center;gap:24px;margin-top:clamp(28px,3vw,48px);font-family:var(--yk-mono);font-size:14px;letter-spacing:.1em;color:var(--yk-sub)}
.yk-mood__bar i{flex:1;height:2px;background:#f3f1eb26}
.yk-mood__bar i b{display:block;height:100%;background:var(--yk-orange);transform:scaleX(var(--mp,0));transform-origin:left}
@media (min-width:1101px){
  html.yk-motion .yk-mood__pin{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;justify-content:center;padding-block:104px 30px;overflow:hidden}
  html.yk-motion .yk-mood__head .yk-sectionhead{margin-bottom:26px;padding-bottom:16px}
  html.yk-motion .yk-mood__head h2{font-size:clamp(30px,2.9vw,48px)}
  html.yk-motion .yk-mood__head .yk-prose p{font-size:16px}
  html.yk-motion .yk-mood__viewport{margin-top:3.6vh;overflow:visible;scroll-snap-type:none}
  html.yk-motion .yk-mood__track{transform:translate3d(calc(var(--mx,0) * -1px),0,0);will-change:transform}
  html.yk-motion .yk-shot{transform:translateY(calc(var(--mp,0) * var(--sp) * 1px))}
  html.yk-motion .yk-shot--0 .yk-shot__img{width:auto;height:42vh}
  html.yk-motion .yk-shot--1 .yk-shot__img{width:auto;height:37vh;margin-top:5vh}
  html.yk-motion .yk-shot--2 .yk-shot__img{width:auto;height:39vh}
  html.yk-motion .yk-mood__bar{margin-top:3vh}
}
@media (min-width:1101px) and (max-height:860px){
  html.yk-motion .yk-mood__head .yk-sectionhead,html.yk-motion .yk-mood__head .yk-prose{display:none}
  html.yk-motion .yk-shot--0 .yk-shot__img{height:40vh}
  html.yk-motion .yk-shot--1 .yk-shot__img{height:35vh}
  html.yk-motion .yk-shot--2 .yk-shot__img{height:37vh}
}

/* ---------------------------------------------------------------- STEP 03 · COLOR */
.yk-derive{margin-top:clamp(56px,6vw,96px)}
.yk-derive__band{position:relative;height:18px;border-radius:99px;background:linear-gradient(90deg,#ff5a36,#f16022 50%,#c8501a);box-shadow:inset 0 0 0 1px #0000001a}
.yk-derive__band>i{position:absolute;inset:-6px 0;border-radius:99px;background:var(--yk-paper);transform-origin:right;transform:scaleX(1);transition:transform 1.4s var(--yk-ease)}
.yk-derive.is-in .yk-derive__band>i{transform:scaleX(0)}
html:not(.yk-js) .yk-derive__band>i{transform:scaleX(0)}
.yk-derive__mark{position:absolute;left:var(--at);top:-34px;transform:translateX(-50%);font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.1em;color:var(--yk-isub)}
.yk-derive__mark::after{content:"";position:absolute;left:50%;top:26px;width:2px;height:26px;margin-left:-1px;background:var(--yk-char)}
.yk-derive__mark--root{color:var(--yk-orange-ink)}
.yk-derive__row{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:clamp(20px,3vw,50px);margin-top:44px}
.yk-derive__item{display:grid;justify-items:start;align-content:start;gap:4px;padding-top:8px}
.yk-derive__item--root{justify-items:center;text-align:center}
.yk-derive__item--b{justify-items:end;text-align:right}
.yk-derive__item i{width:clamp(90px,9vw,140px);aspect-ratio:1;margin-bottom:16px;border-radius:50%;background:var(--c);box-shadow:0 24px 60px -24px var(--c);transform:scale(.4);opacity:0;transition:transform 1s var(--yk-ease),opacity .6s}
.yk-derive__item--root i{width:clamp(130px,13vw,200px)}
.yk-derive.is-in .yk-derive__item i{transform:none;opacity:1}
.yk-derive.is-in .yk-derive__item--a i{transition-delay:.35s}
.yk-derive.is-in .yk-derive__item--b i{transition-delay:.55s}
html:not(.yk-js) .yk-derive__item i{transform:none;opacity:1}
.yk-derive__dir{font-size:14px;font-weight:700;color:var(--yk-isub)}
.yk-derive__item b{font-size:22px;letter-spacing:-.02em}
.yk-derive__item code{font-size:16px;font-weight:600;color:var(--yk-orange-ink)}
.yk-derive__hsl{font-family:var(--yk-mono);font-size:14px;color:var(--yk-isub);white-space:nowrap}
.yk-derive__item>span:last-child{font-size:15px;color:var(--yk-char)}
.yk-palette{margin-top:clamp(70px,7vw,120px)}
.yk-palette__head{display:flex;align-items:baseline;justify-content:space-between;gap:20px}
.yk-palette__head h3{font-size:clamp(26px,2.4vw,40px);font-weight:500;letter-spacing:-.06em}
.yk-palette--b .yk-palette__head h3{font-family:var(--yk-serif);font-style:italic;font-weight:400;letter-spacing:-.01em;font-size:clamp(32px,3vw,50px)}
.yk-palette__head span{font-size:15px;color:var(--yk-isub)}
.yk-palette__ratio{display:flex;height:14px;margin-top:18px;border-radius:99px;overflow:hidden;box-shadow:0 0 0 1px #0000001a}
.yk-palette__ratio i{flex:var(--w) 1 0;background:var(--c)}
.yk-palette__chips{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:18px}
.yk-chip{display:grid;width:100%;text-align:left;gap:4px}
.yk-chip__swatch{position:relative;display:flex;align-items:flex-end;justify-content:space-between;height:clamp(150px,13vw,210px);padding:16px;border-radius:16px;background:var(--c);color:var(--on);box-shadow:inset 0 0 0 1px #0000001a;margin-bottom:10px;transition:transform .4s var(--yk-ease),border-radius .4s}
.yk-chip:hover .yk-chip__swatch{transform:translateY(-6px);border-radius:22px}
.yk-chip__swatch b{font-size:44px;font-weight:800;line-height:1;letter-spacing:-.04em}
.yk-palette--b .yk-chip__swatch b{font-family:var(--yk-serif);font-style:italic;font-weight:400;font-size:50px}
.yk-chip__swatch small{font-family:var(--yk-mono);font-size:14px;font-weight:600}
.yk-chip__name{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--yk-char)}
.yk-chip code{font-size:15px;color:var(--yk-orange-ink)}
.yk-palette--b .yk-chip code{color:#7d5a1f}
.yk-chip__rgb{font-family:var(--yk-mono);font-size:14px;color:var(--yk-isub)}
.yk-palette__chips p{margin-top:10px;font-size:15px;line-height:1.6;color:var(--yk-isub)}
.yk-palette__chips p b{display:block;margin-bottom:4px;font-size:14px;color:var(--yk-char)}

/* ---------------------------------------------------------------- STEP 03 · TYPE */
.yk-type{background:#0f100f}
.yk-specimen{position:relative;padding:26px 28px 30px;border-radius:20px;background:#171918;box-shadow:inset 0 0 0 1px var(--yk-dline)}
.yk-specimen__label{display:flex;justify-content:space-between;gap:16px;font-size:14px;font-weight:700;color:var(--yk-sub)}
.yk-specimen__label code{color:var(--yk-orange)}
.yk-specimen--a{margin-top:clamp(56px,6vw,96px);padding-block:30px 34px;background:#131515;overflow:hidden}
.yk-track{margin-top:clamp(26px,3vw,48px);font-size:clamp(44px,8.6vw,160px);font-weight:500;line-height:.98;letter-spacing:var(--ls,0em);white-space:nowrap}
.yk-track i{font-style:normal;color:var(--yk-verm)}
.yk-trackbar{display:flex;align-items:center;gap:16px;margin-top:clamp(26px,3vw,44px);font-family:var(--yk-mono);font-size:14px;color:var(--yk-sub)}
.yk-trackbar i{flex:1;height:2px;background:#f3f1eb26}
.yk-trackbar b{display:block;height:100%;background:var(--yk-verm);transform:scaleX(var(--tp,0));transform-origin:left}
.yk-specimen--b{margin-top:18px;background:#0b0a09;box-shadow:inset 0 0 0 1px #c9a05a33}
.yk-specimen--b .yk-specimen__label code{color:var(--yk-brass-hi)}
.yk-serif{margin-top:clamp(20px,2.4vw,40px);font-family:var(--yk-serif);font-style:italic;font-size:clamp(56px,9vw,170px);line-height:1;letter-spacing:-.01em;color:#f3eee6;white-space:nowrap}
.yk-serif b{font-weight:400;color:var(--yk-brass-hi)}
.yk-specimen__note{margin-top:18px;font-size:15px;color:var(--yk-sub)}
.yk-specimens{display:grid;grid-template-columns:1.1fr 1.1fr 1fr;gap:18px;margin-top:18px}
.yk-ko{margin-top:24px;font-size:clamp(26px,2.4vw,38px);font-weight:500;line-height:1.3;letter-spacing:-.065em}
.yk-ko--b{font-weight:700;letter-spacing:-.04em}
.yk-ko--b em{color:var(--yk-ember)}
.yk-specimen--ko2{background:#0b0a09;box-shadow:inset 0 0 0 1px #c9a05a33}
.yk-specimen--num{background:#0b0a09;box-shadow:inset 0 0 0 1px #c9a05a33}
.yk-num{display:flex;flex-wrap:wrap;gap:6px 22px;margin-top:22px;font-family:var(--yk-serif);font-size:clamp(38px,3.4vw,56px);line-height:1;color:#f3eee6;white-space:nowrap}
.yk-num b{font-weight:400;color:var(--yk-brass-hi);font-variant-numeric:tabular-nums}

/* ---------------------------------------------------------------- STEP 03 · SHARED UI */
.yk-stack{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:clamp(30px,5vw,80px);align-items:center;margin-top:clamp(56px,6vw,96px)}
.yk-stack__scene{position:relative;aspect-ratio:16/12;perspective:2000px}
.yk-layer{position:absolute;left:8%;right:8%;border-radius:12px;transform-style:preserve-3d;transform:rotateX(calc(var(--tilt,1) * 22deg)) rotateY(calc(var(--tilt,1) * -16deg)) translate3d(0,calc(var(--off) * var(--lp,1) * 1px),calc(var(--z) * var(--lp,1) * 1px));transition:box-shadow .4s;box-shadow:0 40px 70px -40px #0008}
.yk-layer--head{--off:-34;--z:110;top:14%;height:9%;display:flex;align-items:center;gap:6%;padding:0 4%;background:#131515;color:var(--yk-paper);z-index:3}
.yk-layer--main{--off:0;--z:0;top:23%;height:56%;overflow:hidden;background:#000;z-index:2}
.yk-layer--main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:0 0;transition:opacity .8s}
.yk-layer--main img+img{opacity:0}
.yk-stack.is-b .yk-layer--main img+img{opacity:1}
.yk-layer--foot{--off:34;--z:-110;top:79%;height:16%;display:grid;grid-template-columns:1fr auto;align-content:center;gap:4px 16px;padding:0 4%;background:#101211;color:var(--yk-paper);z-index:1}
.yk-mini-logo{display:grid;font-family:Arial,sans-serif;font-size:clamp(16px,1.6vw,24px);font-weight:800;letter-spacing:-.06em;line-height:.9}
.yk-mini-logo i{font-style:normal;color:var(--yk-orange)}
.yk-mini-logo small{font-size:14px;letter-spacing:.2em;transform:scale(.5);transform-origin:left;white-space:nowrap}
.yk-mini-nav{display:flex;gap:4%;flex:1;font-size:14px;white-space:nowrap;overflow:hidden}
.yk-mini-nav i{font-style:normal;transform:scale(.8);transform-origin:left}
.yk-mini-btn{padding:4px 10px;border:1px solid #f3f1eb66;font-size:14px;white-space:nowrap;transform:scale(.8);transform-origin:right}
.yk-layer--foot>span:first-child{grid-column:1/-1;font-size:14px;letter-spacing:.1em;opacity:.7;transform:scale(.8);transform-origin:left;white-space:nowrap}
.yk-layer--foot b{font-size:clamp(18px,2vw,30px);font-weight:500;letter-spacing:-.05em;white-space:nowrap}
.yk-layer--foot b i{font-style:normal;color:var(--yk-orange)}
.yk-mini-float{align-self:center;padding:6px 10px;background:var(--yk-orange);color:#fff;font-size:14px;white-space:nowrap;transform:scale(.8);transform-origin:right}
.yk-stack__legend{display:grid;gap:14px}
.yk-stack__legend li{padding:22px 24px;border-radius:18px;background:var(--yk-card);box-shadow:0 0 0 1px var(--yk-lline)}
.yk-stack__legend li:nth-child(2){background:var(--yk-char);color:var(--yk-paper);box-shadow:none}
.yk-stack__legend code{font-size:14px;font-weight:600;color:var(--yk-orange-ink)}
.yk-stack__legend li:nth-child(2) code{color:var(--yk-orange)}
.yk-stack__legend b{display:block;margin-top:6px;font-size:20px;letter-spacing:-.03em}
.yk-stack__legend p{margin-top:6px;font-size:15px;line-height:1.65;color:var(--yk-isub)}
.yk-stack__legend li:nth-child(2) p{color:var(--yk-sub)}
.yk-stack__swap{display:inline-flex;align-items:center;gap:10px;margin-top:14px;padding:9px 16px;border-radius:99px;background:var(--yk-orange);color:var(--yk-ink)!important;font-size:15px;font-weight:700}
.yk-applyrow{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(30px,6vw,100px);align-items:center;margin-top:clamp(80px,8vw,140px)}
.yk-applyrow__text h3{margin-top:16px;font-size:clamp(28px,2.6vw,42px)}
.yk-applyrow__text>p:last-child{margin-top:18px;max-width:540px;font-size:17px;color:var(--yk-isub)}
.yk-apply{padding:36px 36px 30px;border-radius:4px;background:var(--yk-paper2);box-shadow:0 40px 80px -46px #1a1c1b99,0 0 0 1px var(--yk-lline)}
.yk-apply__eyebrow{font-size:14px;letter-spacing:.1em;color:#676d65}
.yk-apply__title{margin-top:12px;font-size:clamp(30px,2.6vw,40px);font-weight:500;line-height:1.15;letter-spacing:-.05em}
.yk-apply__tabs{display:flex;margin-top:24px;border-bottom:1px solid #0003}
.yk-apply__tabs button{flex:1;padding:12px 6px;border-bottom:2px solid transparent;color:#6a6f68!important;font-size:15px;transition:color .3s,border-color .3s}
.yk-apply__tabs button[aria-pressed="true"]{border-bottom-color:var(--yk-orange);color:var(--yk-char)!important;font-weight:700}
.yk-apply__field{display:block;margin-top:20px;font-size:14px;font-weight:600;line-height:1.6}
.yk-apply__field input{display:block;width:100%;margin-top:4px;padding:10px 0;border:0;border-bottom:1px solid #0003;border-radius:0;background:transparent;color:var(--yk-char);font:inherit;font-size:16px;font-weight:500;outline-offset:3px}
.yk-apply__field input::placeholder{color:#7c8179}
.yk-apply__mail{display:grid;gap:6px;margin-top:22px;padding:16px 18px;border-radius:4px;background:var(--yk-char);color:var(--yk-paper)}
.yk-apply__mail>span{font-family:var(--yk-mono);font-size:14px;letter-spacing:.08em;color:var(--yk-sub)}
.yk-apply__mail b{font-size:17px;font-weight:600;letter-spacing:-.02em}
.yk-apply__mail small{font-size:14px;color:var(--yk-sub)}

/* ---------------------------------------------------------------- STEP 04 PRESENTATION + SIANS */
.yk-present{padding-bottom:clamp(30px,3vw,50px);background:#0f100f}
.yk-sian{position:relative;padding-block:clamp(90px,9vw,150px) clamp(70px,7vw,110px)}
.yk-sian--a{background:radial-gradient(60% 50% at 75% 30%,#3a1a10 0,#131515 70%);color:var(--yk-paper);--acc:var(--yk-verm)}
.yk-sian--b{background:radial-gradient(60% 60% at 70% 40%,#2d220f 0,#0b0a09 72%);color:#f3eee6;--acc:var(--yk-brass)}
.yk-sian__inner{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.6fr);gap:clamp(30px,4vw,72px);align-items:center;width:calc(100% - 8vw);max-width:1600px;margin-inline:auto}
.yk-sian__info{position:relative}
.yk-sian__letter{position:absolute;right:0;top:-48px;font-size:clamp(150px,15vw,250px);font-weight:800;letter-spacing:-.06em;line-height:.8;opacity:.08;pointer-events:none}
.yk-sian--b .yk-sian__letter{font-family:var(--yk-serif);font-style:italic;font-weight:400}
.yk-sian__status{display:inline-block;padding:6px 14px;border-radius:99px;background:var(--acc);color:#111312;font-size:14px;font-weight:700;letter-spacing:.06em}
.yk-sian__info h3{margin-top:20px;font-size:clamp(24px,2.2vw,36px)}
.yk-sian__info h3 small{display:block;margin-bottom:14px;font-size:clamp(36px,3.5vw,58px);font-weight:500;line-height:.98;letter-spacing:-.065em;color:var(--yk-verm)}
.yk-sian--b h3 small{font-family:var(--yk-serif);font-style:italic;font-weight:400;letter-spacing:-.01em;font-size:clamp(46px,4.4vw,74px);color:var(--yk-brass-hi)}
.yk-sian__info>p{margin-top:20px;font-size:17px;color:var(--yk-sub)}
.yk-sian--b .yk-sian__info>p{color:#b5ada1}
.yk-sian__points{display:grid;gap:10px;margin-top:24px}
.yk-sian__points li{position:relative;padding-left:22px;font-size:16px;font-weight:600;line-height:1.55}
.yk-sian__points li::before{content:"";position:absolute;left:0;top:.55em;width:9px;height:9px;border-radius:50%;border:2px solid var(--acc)}
.yk-sian__chips{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:26px}
.yk-sian__chips i{width:26px;height:26px;border-radius:50%;background:var(--c);box-shadow:0 0 0 1px #ffffff40}
.yk-sian__chips span{margin-left:10px;font-size:14px;font-weight:600;opacity:.8}
.yk-sian__open{display:inline-flex;align-items:center;gap:14px;margin-top:30px;padding:13px 22px;border-radius:99px;background:var(--acc);color:#111312!important;font-size:15px;font-weight:700;transition:transform .3s}
.yk-sian__open:hover{transform:translateY(-3px)}
.yk-sian__device{position:relative;padding:0 clamp(50px,7vw,130px) 0 0}
.yk-browser{overflow:hidden;border-radius:16px;background:#111;box-shadow:0 50px 100px -40px #000d,0 0 0 1px #ffffff1a}
.yk-browser__bar{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;height:40px;padding:0 16px;background:#1a1a1c}
.yk-browser__bar>span:first-child{display:flex;gap:6px}
.yk-browser__bar>span:first-child i{width:10px;height:10px;border-radius:50%;background:#ffffff2e}
.yk-browser__url{justify-self:center;min-width:0;max-width:100%;padding:3px 40px;overflow:hidden;text-overflow:ellipsis;border-radius:99px;background:#ffffff12;color:#d5d0c8;font-family:var(--yk-mono);font-size:14px;font-weight:500;white-space:nowrap}
.yk-browser__live{font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.12em;color:var(--acc)}
.yk-browser__view{position:relative;aspect-ratio:16/10;background:#000}
.yk-browser__view video{width:100%;height:100%;object-fit:cover}
.yk-phone{position:relative;width:200px;margin:0;padding:8px;border-radius:32px;background:#0d0d0e;box-shadow:0 40px 80px -30px #000c,0 0 0 1px #ffffff26}
.yk-phone__notch{position:absolute;z-index:2;top:14px;left:50%;width:62px;height:16px;margin-left:-31px;border-radius:99px;background:#0d0d0e}
.yk-phone__view,.yk-phone>img{overflow:hidden;width:100%;border-radius:25px;aspect-ratio:390/844;background:#000}
.yk-phone>img{object-fit:cover;object-position:top}
.yk-phone__view video{width:100%;height:100%;object-fit:cover}
.yk-sian__device .yk-phone{position:absolute;right:0;bottom:56px}
.yk-chapter-bar{display:grid;grid-template-columns:1fr auto;gap:12px 16px;align-items:center;margin-top:22px;max-width:calc(100% - 120px)}
.yk-chapter-bar__track{grid-column:1/-1;position:relative;height:2px;border-radius:2px;background:#ffffff33}
.yk-chapter-bar__track i{position:absolute;inset:0;background:var(--acc);transform:scaleX(var(--vp,0));transform-origin:left}
.yk-chapter-bar__list{display:flex;flex-wrap:wrap;gap:6px}
.yk-chapter-bar__list button{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border-radius:99px;border:1px solid #ffffff40;font-size:14px;font-weight:600;line-height:1.4;opacity:.7;transition:opacity .3s,background .3s,color .3s}
.yk-chapter-bar__list button b{font-family:var(--yk-mono);font-size:14px;font-weight:600;opacity:.8}
.yk-chapter-bar__list button:hover{opacity:1}
.yk-chapter-bar__list button[aria-current="true"]{opacity:1;background:var(--acc);border-color:var(--acc);color:#111312}
.yk-chapter-bar__play{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;border:1px solid #ffffff66;font-size:14px;font-weight:700}
.yk-notes{margin-top:clamp(70px,7vw,120px)}
.yk-notes__head{display:grid;grid-template-columns:auto 1fr;gap:30px;align-items:center}
.yk-notes__head p{max-width:640px;font-size:16px;color:var(--yk-sub)}
.yk-sian .yk-eyebrow{color:var(--acc)}
.yk-notes__strip{display:grid;grid-template-columns:repeat(4,1fr);gap:28px 18px;width:calc(100% - 12vw);max-width:1440px;margin:34px auto 0}
.yk-notes__shot{display:block;width:100%;overflow:hidden;border-radius:12px;background:#000;box-shadow:0 0 0 1px #ffffff1a}
.yk-notes__shot img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .8s var(--yk-ease),filter .5s;filter:saturate(.9)}
.yk-notes__shot:hover img{transform:scale(1.05);filter:none}
.yk-notes__strip b{display:block;margin-top:14px;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.02em;color:var(--acc)}
.yk-notes__strip p{margin-top:6px;font-size:15px;line-height:1.6;color:var(--yk-sub)}
.yk-sian--b .yk-notes__strip p,.yk-sian--b .yk-notes__head p{color:#b5ada1}

/* ---------------------------------------------------------------- STEP 05 INTERVIEW */
.yk-interview{background:radial-gradient(60% 70% at 12% 18%,#241810 0,var(--yk-ink) 60%)}
.yk-qa{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:clamp(56px,6vw,96px)}
.yk-qa__card{display:flex;flex-direction:column;padding:18px 18px 30px;border-radius:22px;background:#161817;box-shadow:inset 0 0 0 1px var(--yk-dline);--acc:var(--yk-verm)}
.yk-qa__card--b{--acc:var(--yk-brass-hi);background:#12100d}
.yk-qa__card--wide{grid-column:1/-1;display:grid;grid-template-columns:1fr;gap:26px;--acc:var(--yk-brass-hi);background:#12100d}
.yk-qa__demo{position:relative;overflow:hidden;aspect-ratio:16/10;border-radius:14px;background:#050606;margin-bottom:24px}
.yk-qa__card--wide .yk-qa__demo{margin-bottom:0;aspect-ratio:1200/560}
.yk-qa__wide-text{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:8px 40px;align-items:start}
.yk-qa__wide-text .yk-qa__tag{grid-column:1/-1}
.yk-qa__tag{display:block;padding-inline:8px;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.12em;color:var(--acc)}
.yk-qa__card h3{margin-top:10px;padding-inline:8px;font-size:clamp(22px,1.9vw,30px);line-height:1.35}
.yk-qa__card h3 i,.yk-qa__card p i{margin-right:8px;font-family:var(--yk-mono);font-style:normal;font-weight:600;color:var(--acc)}
.yk-qa__card p{margin-top:12px;padding-inline:8px;font-size:16px;color:var(--yk-sub)}
.yk-qa__demo--ribbon{background:#131515}
.yk-qa__demo--ribbon img{position:absolute;left:50%;top:50%;width:auto;height:118%;max-width:none;transform:translate(-50%,-50%)}
.yk-qa__demo--key img{width:100%;height:100%;object-fit:cover}
.yk-qa__stage{position:absolute;left:16px;top:14px;padding:5px 12px;border-radius:99px;background:#0009;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--acc);font-variant-numeric:tabular-nums}
.yk-qa__bar{position:absolute;left:16px;right:16px;bottom:16px;height:3px;border-radius:2px;background:#f3f1eb33}
.yk-qa__bar i{display:block;height:100%;border-radius:2px;background:var(--acc);transform:scaleX(var(--sp,0));transform-origin:left}
.yk-qa__demo--cards{display:flex;align-items:center;background:var(--yk-paper)}
.yk-minitrack{display:flex;gap:4%;padding-left:6%;transform:translate3d(calc(var(--mt,0) * -1px),0,0);will-change:transform}
.yk-minicard{flex:none;display:flex;flex-direction:column;width:clamp(170px,17vw,260px);aspect-ratio:3/3.4;padding:16px;color:var(--yk-char)}
.yk-minicard--orange{background:var(--yk-verm)}
.yk-minicard--stone{background:#e2e2d6}
.yk-minicard--dark{background:#131515;color:var(--yk-paper)}
.yk-minicard span{font-family:var(--yk-mono);font-size:14px;font-weight:600}
.yk-minicard small{margin-top:auto;font-size:14px;letter-spacing:.06em;font-weight:600}
.yk-minicard b{margin-top:6px;font-size:clamp(17px,1.5vw,23px);font-weight:500;line-height:1.3;letter-spacing:-.05em}
.yk-minicard i{align-self:flex-end;margin-top:10px;display:grid;place-items:center;width:30px;height:30px;border-radius:50%;box-shadow:inset 0 0 0 1px currentColor;font-style:normal;font-size:14px}
.yk-qa__demo--keyhole img{width:100%;height:100%;object-fit:cover;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath d='M50 22a12 12 0 0 1 6.6 22L60 78H40l3.4-34A12 12 0 0 1 50 22z'/%3E%3C/svg%3E") center/calc(var(--kh,0) * 1600% + 60%) no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath d='M50 22a12 12 0 0 1 6.6 22L60 78H40l3.4-34A12 12 0 0 1 50 22z'/%3E%3C/svg%3E") center/calc(var(--kh,0) * 1600% + 60%) no-repeat}
.yk-qa__demo--keyhole{background:#0b0a09}
.yk-kh__side{position:absolute;top:50%;width:30%;transform:translateY(-50%);font-size:clamp(15px,1.3vw,19px);font-weight:700;line-height:1.4;letter-spacing:-.02em;color:#f3eee6;opacity:calc(1 - var(--kh,0) * 2.4)}
.yk-kh__side small{display:block;margin-bottom:8px;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.1em;color:var(--yk-brass-hi)}
.yk-kh__side--l{left:6%}
.yk-kh__side--r{right:6%;text-align:right}
.yk-qa__demo--fill{display:grid;align-content:center;gap:22px;padding:0 9%;background:var(--yk-paper);color:#131515}
.yk-fillline{font-size:clamp(24px,2.6vw,42px);font-weight:500;line-height:1.35;letter-spacing:-.065em}
.yk-fillline span{color:#13151547;transition:color .3s}
.yk-fillline span.is-on{color:#131515}
.yk-fillline span:nth-last-child(-n+2).is-on{color:var(--yk-verm)}
html:not(.yk-motion) .yk-fillline span{color:#131515}
.yk-fillnote{font-family:var(--yk-mono);font-size:14px;letter-spacing:.1em;color:#656c61}
.yk-qa__demo--dial{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:6%;padding:5% 6%;background:var(--yk-paper);color:#1b1814}
.yk-dial{width:100%;height:auto;overflow:visible}
.yk-dial__ticks line{stroke:#1b181455;stroke-width:2}
.yk-dial__pointer{fill:var(--yk-ember)}
.yk-dial__rotor{transform-origin:300px 300px;transform:rotate(calc(var(--dial,0) * -90deg));transition:transform 1s var(--yk-ease)}
.yk-dial__seg path{fill:none;stroke:#1b18141f;stroke-width:44}
.yk-dial__seg text{font-family:var(--yk-sans);font-size:21px;font-weight:700;letter-spacing:.08em;fill:#645d53;text-anchor:middle}
.yk-dial__seg.is-on path{stroke:var(--yk-ember)}
.yk-dial__seg.is-on text{fill:#fff}
.yk-dial__inner{fill:#0b0a09}
.yk-dial__hole{fill:var(--yk-brass)}
.yk-dial__name{font-family:var(--yk-sans);font-size:18px;font-weight:700;letter-spacing:.2em;fill:var(--yk-brass);text-anchor:middle}
.yk-dial__side{display:grid;gap:10px}
.yk-dial__side span{font-family:var(--yk-mono);font-size:14px;font-weight:600;color:#8a5a17}
.yk-dial__side b{font-size:clamp(18px,1.7vw,26px);letter-spacing:-.02em}
.yk-dial__side p{font-size:15px!important;line-height:1.6;color:#645d53!important;padding:0!important;margin:0!important}
.yk-dial__next{justify-self:start;display:inline-flex;align-items:center;gap:10px;margin-top:6px;padding:9px 16px;border-radius:99px;background:#0b0a09;color:#f3eee6!important;font-size:15px;font-weight:700}
.yk-qa__demo--paths{background:#0b0a09}
.yk-paths{position:absolute;inset:0;width:100%;height:100%}
.yk-paths--narrow{display:none}
.yk-path-base{stroke:#f3eee622;stroke-width:2}
.yk-path-line{stroke:var(--yk-brass);stroke-width:3;stroke-dasharray:1;stroke-dashoffset:calc(1 - var(--pa,0))}
.yk-path-line--b{stroke:var(--yk-ember);stroke-dashoffset:calc(1 - var(--pb,0))}
.yk-path-line--c{stroke:#f3eee6;stroke-dashoffset:calc(1 - var(--pc,0))}
.yk-path-tag{position:absolute;left:1.6%;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.1em}
.yk-path-tag--a{top:5%;color:var(--yk-brass-hi)}
.yk-path-tag--b{top:70%;color:#ff8a4c}
.yk-steps-on li{position:absolute;left:var(--x);top:var(--y);display:grid;gap:2px;width:max-content;max-width:14%;padding-top:16px;opacity:.25;transition:opacity .4s}
.yk-steps-on li::before{content:"";position:absolute;left:0;top:0;width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:50%;background:#0b0a09;box-shadow:inset 0 0 0 2px var(--yk-brass)}
.yk-steps-on--b li::before{box-shadow:inset 0 0 0 2px var(--yk-ember)}
.yk-steps-on--c li::before{box-shadow:inset 0 0 0 2px #f3eee6}
.yk-steps-on li.is-on{opacity:1}
.yk-steps-on li.is-on::before{background:currentColor}
.yk-steps-on--a li{color:var(--yk-brass-hi)}
.yk-steps-on--b li{color:#ff8a4c}
.yk-steps-on--c li{color:#f3eee6}
.yk-steps-on b{font-size:clamp(14px,1.05vw,16px);font-weight:700;color:#f3eee6;white-space:nowrap}
.yk-steps-on span{font-size:14px;line-height:1.4;color:#b5ada1}
html:not(.yk-motion) .yk-steps-on li{opacity:1}
html:not(.yk-motion) .yk-path-line{stroke-dashoffset:0}
.yk-qa__wide-text{padding-right:8px}

/* ---------------------------------------------------------------- STEP 05 · MOBILE */
.yk-mobile{overflow:hidden}
.yk-phones{display:flex;gap:clamp(16px,2vw,30px);width:max-content;margin-top:clamp(56px,6vw,96px);padding-inline:6vw;padding-bottom:50px;transform:translate3d(calc(var(--px,0) * -1px),0,0)}
.yk-phones .yk-phone{flex:none;width:clamp(170px,15vw,230px);transform:translateY(calc(var(--pp,0) * var(--sp) * 1px))}
.yk-phones .yk-phone:nth-child(even){margin-top:70px}
.yk-phones figcaption{position:absolute;left:0;right:0;bottom:-34px;text-align:center;font-size:14px;font-weight:700;color:var(--yk-isub)}

/* ---------------------------------------------------------------- STEP 06 OFFER */
.yk-offer{padding-top:clamp(60px,6vw,110px)}
.yk-table{margin-top:clamp(56px,6vw,90px);border-top:1.5px solid var(--yk-char)}
.yk-table__row{display:grid;grid-template-columns:200px 1fr 1fr;gap:28px;padding:18px 0;border-bottom:1px solid var(--yk-lline);font-size:16px;line-height:1.6}
.yk-table__row>span:first-child{font-weight:700;color:var(--yk-isub)}
.yk-table__row--head{font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.08em}
.yk-table__row--head .is-a{color:#c23a17}
.yk-table__row--head .is-b{color:#7d5a1f}
.yk-table__row:last-child span:not(:first-child){font-weight:800}
.yk-refcheck{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.6fr);gap:clamp(30px,5vw,90px);margin-top:clamp(90px,9vw,150px)}
.yk-refcheck__head h3{margin-top:16px;font-size:clamp(28px,2.6vw,42px)}
.yk-refcheck__head>p:last-child{margin-top:18px;max-width:460px;font-size:17px;color:var(--yk-isub)}
.yk-refcheck__list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.yk-refcheck__list li{position:relative;display:grid;gap:6px;padding:22px 24px 24px;border-radius:18px;background:var(--yk-card);box-shadow:0 0 0 1px var(--yk-lline)}
.yk-refcheck__no{font-family:var(--yk-mono);font-size:14px;font-weight:600;color:var(--yk-orange-ink)}
.yk-refcheck__list b{font-size:19px;letter-spacing:-.02em}
.yk-refcheck__list p{font-size:15px;line-height:1.65;color:var(--yk-isub)}
.yk-refcheck__ok{position:absolute;right:18px;top:18px;padding:3px 10px;border-radius:99px;background:var(--yk-char);color:var(--yk-paper);font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.06em}

/* ---------------------------------------------------------------- STEP 07 FOLLOW-UP */
.yk-next{padding-bottom:clamp(80px,8vw,130px);background:var(--yk-ink)}
.yk-sheet{display:grid;grid-template-columns:minmax(220px,.8fr) 2fr;gap:clamp(24px,4vw,60px);padding:clamp(28px,3vw,44px);border-radius:8px;background:var(--yk-paper);color:var(--yk-char)}
.yk-sheet__head{display:flex;flex-direction:column;gap:10px;font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.12em;color:var(--yk-isub)}
.yk-sheet__logo{font-family:Arial,sans-serif;font-size:clamp(52px,5vw,80px);font-weight:800;letter-spacing:-.07em;line-height:.85;color:var(--yk-char)}
.yk-sheet__logo i{font-style:normal;color:var(--yk-orange)}
.yk-sheet__list{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.yk-sheet__list div{display:grid;grid-template-columns:130px 1fr;gap:16px;padding:13px 0;border-bottom:1px dashed #1a1c1b40}
.yk-sheet__list dt{font-family:var(--yk-mono);font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--yk-orange-ink)}
.yk-sheet__list dd{font-size:15px;line-height:1.6}
.yk-ending{position:relative;margin:clamp(90px,9vw,150px) calc(50% - 50vw) 0;padding:clamp(120px,13vw,210px) 6vw;text-align:center;background:linear-gradient(180deg,#111312 0,#111312b3 22%,#11131280 50%,#111312d9 82%,#111312 100%),url("/assets/img/works/ynk/mood-door.webp") center 40%/cover}
.yk-ending h2{margin-top:22px;font-size:clamp(38px,5vw,80px)}
.yk-ending>p{max-width:760px;margin:24px auto 0;font-size:18px;color:#d4d6d1}
.yk-ending__links{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:20px 40px;margin-top:40px}
.yk-others{margin-top:clamp(90px,9vw,140px)}
.yk-others__title{font-size:clamp(24px,2.2vw,32px)!important}
.yk-others ul{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:28px}
.yk-others a{display:flex;flex-direction:column;gap:8px}
.yk-others__img{overflow:hidden;border-radius:16px;aspect-ratio:820/568;background:#ffffff0d}
.yk-others__img img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--yk-ease)}
.yk-others a:hover img{transform:scale(1.04)}
.yk-others__tag{margin-top:8px;font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--yk-orange)}
.yk-others strong{font-size:21px}
.yk-others__desc{font-size:15px;line-height:1.6;color:var(--yk-sub)}

/* ---------------------------------------------------------------- index (bottom), lightbox, toast */
.yk-index{position:fixed;z-index:1001;left:50%;bottom:22px;display:flex;align-items:center;gap:2px;max-width:calc(100vw - 40px);padding:6px 6px 6px 18px;border-radius:99px;background:#111312eb;backdrop-filter:blur(10px);box-shadow:0 18px 40px #0006,inset 0 0 0 1px #f3f1eb1a;transform:translate(-50%,140%);opacity:0;transition:transform .5s var(--yk-ease),opacity .5s;font-family:var(--yk-sans)}
.yk-index.is-visible{transform:translate(-50%,0);opacity:1}
.yk-index__now{display:inline-flex;align-items:center;gap:10px;margin-right:12px;font-size:14px;color:#f3f1ebcc;white-space:nowrap}
.yk-index__now b{font-family:var(--yk-mono);font-weight:600;letter-spacing:.08em;color:var(--yk-orange)}
.yk-index__bar{position:absolute;left:24px;right:24px;top:0;height:2px;background:#ffffff14}
.yk-index__bar i{position:absolute;inset:0;background:var(--yk-orange);transform:scaleX(var(--read,0));transform-origin:left}
.yk-index a{display:inline-flex;align-items:center;gap:6px;padding:8px 11px;border-radius:99px;color:#c8c9c4;font-size:14px;font-weight:600;text-decoration:none;white-space:nowrap;transition:background .3s,color .3s}
.yk-index a b{font-family:var(--yk-mono);font-size:14px;font-weight:600;color:#8f938c}
.yk-index a span{display:none}
.yk-index a:hover{color:#fff}
.yk-index a[aria-current]{background:var(--yk-orange);color:var(--yk-ink)}
.yk-index a[aria-current] b{color:var(--yk-ink)}
.yk-index a[aria-current] span{display:inline}
.yk-lightbox{width:min(1240px,94vw);max-width:none;height:92vh;max-height:none;padding:0;border:0;border-radius:18px;background:#111312;color:#fff;overflow:hidden}
.yk-lightbox::backdrop{background:#050606e6;backdrop-filter:blur(4px)}
.yk-lightbox__bar{display:flex;justify-content:space-between;align-items:center;gap:20px;height:60px;padding:0 20px;border-bottom:1px solid #ffffff1a}
.yk-lightbox__bar p{font-family:var(--yk-sans);font-size:15px;font-weight:600}
.yk-lightbox__close{padding:8px 16px;border-radius:99px;border:1px solid #ffffff4d;background:none;color:#fff;font-family:var(--yk-sans);font-size:15px;font-weight:600;cursor:pointer}
.yk-lightbox__scroll{height:calc(92vh - 60px);overflow:auto;padding:20px}
.yk-lightbox__list{display:grid;gap:26px;margin:0;padding:0;list-style:none}
.yk-lightbox__list figure{margin:0}
.yk-lightbox__list img{display:block;width:100%;height:auto;border-radius:10px;background:#181a19}
.yk-lightbox__list figcaption{display:flex;gap:10px;margin-top:10px;font-family:var(--yk-sans);font-size:15px;font-weight:600;color:#d5d6d1}
.yk-lightbox__list figcaption b{color:var(--yk-orange);font-family:var(--yk-mono);font-size:14px}
.yk-lightbox__list li.is-target figure img{box-shadow:0 0 0 3px var(--yk-orange)}
.yk-toast{position:fixed;z-index:2001;left:50%;bottom:90px;padding:12px 20px;border-radius:99px;background:var(--yk-paper);color:var(--yk-ink);font-family:var(--yk-sans);font-size:15px;font-weight:700;transform:translate(-50%,20px);opacity:0;pointer-events:none;transition:opacity .3s,transform .3s}
.yk-toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------------------------------------------------------------- responsive */
@media (min-width:1101px) and (max-height:820px){
  .yk-read__canvas{width:88%}
  .yk-stack__scene{aspect-ratio:16/11}
}
@media (max-width:1280px){
  .yk-index a{padding:8px 9px}
  .yk-rail__list dd{font-size:14px}
}
@media (max-width:1100px){
  .yk-index{display:none}
  .yk-split,.yk-rail__head{grid-template-columns:minmax(0,1fr);gap:26px}
  .yk-sectionhead{grid-template-columns:1fr auto}
  .yk-sectionhead .yk-steps-dots{display:none}
  .yk-meta{grid-template-columns:1fr 1fr}
  .yk-stats{grid-template-columns:1fr 1fr}
  .yk-stats li:nth-child(2){border-right:0}
  .yk-stats li:nth-child(3){padding-left:0}
  .yk-stats li:nth-child(n+3){margin-top:26px;border-top:1px solid var(--yk-lline)}
  .yk-rail__list{grid-template-columns:1fr;border-top:0}
  .yk-rail__list li a{display:grid;grid-template-columns:56px 1fr auto;gap:6px 16px;padding:18px 0 18px 0!important;border-right:0;border-top:1px solid var(--yk-lline)}
  .yk-rail__list li a::before{display:none}
  .yk-rail__list b{grid-column:2}
  .yk-rail__list dl{grid-column:2;grid-template-columns:1fr 1fr;gap:12px}
  .yk-rail__no{grid-row:1/3}
  .yk-rail__go{grid-column:3;grid-row:1;margin:0;padding:0}
  .yk-before{grid-template-columns:minmax(0,1fr)}
  .yk-read{grid-template-columns:minmax(0,1fr);gap:0}
  .yk-read__stage{top:72px;height:auto;padding:14px 0 18px;background:#0f100f;z-index:2}
  .yk-read__steps{padding-bottom:10vh}
  .yk-step{min-height:62vh;padding-block:20px}
  .yk-fork__grid{grid-template-columns:1fr}
  .yk-mood__viewport{padding-bottom:10px}
  .yk-shot--0 .yk-shot__img{width:78vw}
  .yk-shot--1 .yk-shot__img{width:56vw;margin-top:0}
  .yk-shot--2 .yk-shot__img{width:66vw}
  .yk-derive__row{grid-template-columns:1fr;gap:28px}
  .yk-derive__item,.yk-derive__item--root,.yk-derive__item--b{grid-template-columns:auto 1fr;justify-items:start;text-align:left;column-gap:20px}
  .yk-derive__item i,.yk-derive__item--root i{grid-row:1/6;width:96px;margin:0}
  .yk-palette__chips{grid-template-columns:repeat(3,1fr)}
  .yk-specimens{grid-template-columns:1fr}
  .yk-stack,.yk-applyrow,.yk-refcheck{grid-template-columns:minmax(0,1fr)}
  .yk-qa{grid-template-columns:minmax(0,1fr)}
  .yk-qa__wide-text{grid-template-columns:minmax(0,1fr)}
  .yk-sian__inner{grid-template-columns:minmax(0,1fr)}
  .yk-sian__device{padding-right:clamp(70px,16vw,150px)}
  .yk-sian__device .yk-phone{width:clamp(120px,22vw,190px)}
  .yk-notes__head{grid-template-columns:1fr;gap:14px}
  .yk-notes__strip{grid-template-columns:1fr 1fr}
  .yk-phones{overflow-x:auto;width:auto;transform:none;scroll-snap-type:x mandatory;scrollbar-width:none}
  .yk-phones .yk-phone{transform:none;scroll-snap-align:center}
  .yk-table__row{grid-template-columns:120px 1fr 1fr;gap:16px;font-size:15px}
  .yk-sheet{grid-template-columns:1fr}
  .yk-others ul{grid-template-columns:1fr}
}
@media (max-width:900px) and (orientation:portrait),(max-aspect-ratio:9/10){
  .yk-hero__rooms{grid-template-columns:1fr;grid-template-rows:1fr 1fr}
  .yk-room+.yk-room{border-top:2px solid var(--yk-orange)}
  .yk-hero__seam{display:none}
  .yk-room--a img{object-position:80% 50%;--o:50% 100%}
  .yk-room--b img{object-position:42% 50%;--o:50% 0}
  .yk-room::after,.yk-room--b::after{background:linear-gradient(0deg,#111312cc,#11131200 60%)}
  .yk-room__name{top:auto;bottom:7%;transform:none}
  .yk-room--a .yk-room__name{left:20px;font-size:clamp(30px,9.4vw,52px)}
  .yk-room--b .yk-room__name{right:20px;top:14%;bottom:auto;font-size:clamp(34px,10.6vw,60px)}
  .yk-room figcaption{bottom:auto;top:96px}
  .yk-room--b figcaption{top:auto;bottom:9svh}
}
@media (max-width:720px){
  .yk{font-size:16px}
  .yk-wrap,.yk-read,.yk-notes__strip{width:calc(100% - 40px)}
  .yk-sian__inner{width:calc(100% - 40px)}
  .yk-sec{padding-block:88px}
  .yk-prose p{font-size:17px}
  html.yk-motion .yk-hero{height:360svh}
  .yk-hero__top{display:none}
  .yk-hero__word{font-size:10.6vw;--grow:1.1}
  .yk-hero__subs{bottom:21svh}
  .yk-sub{font-size:clamp(20px,5.6vw,26px)}
  .yk-hero__title h1{font-size:clamp(32px,9.4vw,48px)}
  .yk-hero__lead{font-size:16px}
  .yk-hero__hud{left:20px;right:20px;bottom:3.4svh;gap:12px;letter-spacing:.02em}
  .yk-hero__hint{letter-spacing:.1em}
  .yk-room figcaption{gap:10px}
  .yk-room--a figcaption{left:20px}
  .yk-room--b figcaption{right:20px}
  .yk-meta{grid-template-columns:1fr}
  .yk-stats strong{font-size:clamp(50px,15vw,68px)}
  .yk-stats span{font-size:14px}
  .yk-rail__list li a{grid-template-columns:44px 1fr auto}
  .yk-rail__list dl{grid-template-columns:1fr}
  .yk-oldsite__slide{height:120px}
  .yk-oldsite__slide i{height:76px}
  .yk-pin--3{top:220px}
  .yk-doc{padding:24px 20px 22px}
  .yk-doc__info div{grid-template-columns:84px 1fr}
  .yk-doc__stamp{width:84px;height:84px;font-size:14px}
  .yk-read__canvas{aspect-ratio:4/3;border-radius:16px}
  .yk-found{font-size:14px;padding:6px 10px}
  .yk-found--1{left:4%;top:8%}
  .yk-found--2{right:4%;top:auto;bottom:24%}
  .yk-found--3{right:auto;left:4%;bottom:8%}
  .yk-v--sides{grid-template-columns:1fr;grid-template-rows:1fr 1fr;padding:6% 14%}
  .yk-half{align-content:start;gap:4px;padding:9% 14% 0;border-radius:999px 999px 0 0;text-align:center;transform:translateY(-20%)}
  .yk-half--r{align-content:end;padding:0 14% 9%;border-radius:0 0 999px 999px;text-align:center;transform:translateY(20%)}
  .yk-half b{font-size:15px}
  .yk-half small{font-size:14px;letter-spacing:.02em}
  .yk-v__center{width:auto;aspect-ratio:auto;padding:5px 12px;border-radius:99px;white-space:nowrap}
  .yk-v__center br{display:none}
  .yk-oldsite__cols b{transform:scale(.6)}
  .yk-v--quote{padding:0 6%}
  .yk-v__frame{width:min(24%,110px)}
  .yk-step h3{font-size:30px}
  .yk-step p{font-size:16px}
  .yk-palette__chips{grid-template-columns:1fr 1fr}
  .yk-chip__swatch{height:130px}
  .yk-chip__swatch b{font-size:34px}
  .yk-specimen{padding:22px 20px 26px}
  .yk-specimen__label{flex-direction:column;gap:4px}
  .yk-track{font-size:clamp(34px,11vw,56px)}
  .yk-serif{font-size:clamp(46px,15vw,74px);white-space:normal}
  .yk-stack__scene{--tilt:.55}
  .yk-layer--head{gap:4%}
  .yk-mini-nav{display:none}
  .yk-sian--a .yk-sian__info h3 small{font-size:30px}
  .yk-apply{padding:28px 22px 24px}
  .yk-sian__device{padding-right:0}
  .yk-sian__device .yk-phone{position:relative;right:auto;bottom:auto;width:56%;margin:24px auto 0}
  .yk-chapter-bar{max-width:none}
  .yk-notes__strip{grid-template-columns:1fr;gap:26px}
  .yk-qa__demo--dial{grid-template-columns:1fr;aspect-ratio:auto;padding:8% 8% 7%}
  .yk-qa__demo--dial .yk-dial{width:72%;justify-self:center}
  .yk-qa__demo--fill{aspect-ratio:4/3}
  .yk-kh__side{font-size:14px;width:34%}
  .yk-qa__card--wide .yk-qa__demo{aspect-ratio:360/900}
  .yk-paths--wide{display:none}
  .yk-paths--narrow{display:block}
  .yk-path-tag{top:1.2%;letter-spacing:.06em}
  .yk-path-tag span{display:none}
  .yk-path-tag--a{left:4%}
  .yk-path-tag--b{left:auto;right:4%}
  .yk-steps-on li{left:var(--nx);top:var(--ny);max-width:62%;padding-top:0;transform:translate(14px,-12px)}
  .yk-steps-on li::before{left:-14px;top:12px}
  .yk-steps-on--b li{transform:translate(calc(-100% - 14px),-12px);text-align:right}
  .yk-steps-on--b li::before{left:auto;right:-20px}
  .yk-steps-on b{white-space:normal}
  .yk-refcheck__list{grid-template-columns:1fr}
  .yk-table__row{grid-template-columns:1fr;gap:4px}
  .yk-table__row--head{display:none}
  .yk-table__row span[role="cell"]:nth-child(2)::before{content:"A · ";font-weight:800;color:#c23a17}
  .yk-table__row span[role="cell"]:nth-child(3)::before{content:"B · ";font-weight:800;color:#7d5a1f}
  .yk-sheet__list{grid-template-columns:1fr}
  .yk-sheet__list div{grid-template-columns:110px 1fr}
}
@media (prefers-reduced-motion:reduce){
  .yk *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}