:root{
  --opt-ivory:#fbf9f5;
  --opt-paper:#f2ede4;
  --opt-white:#fffefd;
  --opt-violet:#351c75;
  --opt-coral:#f06449;
  --opt-ink:#18131b;
  --opt-muted:#6e6671;
  --opt-line:rgba(24,19,27,.16);
  --opt-serif:var(--type-display,"Maru Buri",Georgia,serif);
}
body{background:var(--opt-ivory);color:var(--opt-ink)}
.opt-eyebrow,.opt-section-label>span,.opt-section-head span,.opt-book-copy>span,.opt-founder-copy>span,.opt-index-head>span,.opt-invite a>span{display:block;color:var(--opt-violet);font-size:11px;font-weight:760;letter-spacing:.16em;text-transform:uppercase}
.opt-hero{padding:150px 0 0;background:var(--opt-ivory);overflow:hidden}
.opt-hero-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(520px,1.08fr);grid-template-areas:"copy visual" "start start";gap:58px 76px;align-items:center}
.opt-hero-copy{grid-area:copy;max-width:610px;padding:40px 0 76px}
.opt-hero-copy h1{max-width:620px;margin:28px 0 0;font-family:var(--opt-serif);font-size:clamp(64px,6.2vw,106px);font-weight:500;line-height:.95;letter-spacing:-.07em;text-wrap:balance}
.opt-lede{max-width:530px;margin:34px 0 0;color:#4f4853;font-size:18px;line-height:1.92;word-break:keep-all}
.opt-current-question{margin:46px 0 0;padding:22px 0;border-top:1px solid var(--opt-line);border-bottom:1px solid var(--opt-line);display:grid;grid-template-columns:110px 1fr;gap:8px 22px;align-items:baseline}
.opt-current-question>span{grid-row:1/3;color:var(--opt-coral);font-size:11px;font-weight:760;letter-spacing:.08em}
.opt-current-question strong{font-family:var(--opt-serif);font-size:20px;font-weight:500;line-height:1.45}
.opt-current-question a{color:var(--opt-muted);font-size:12px;text-decoration:none}
.opt-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.opt-button{min-height:48px;padding:0 22px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--opt-ink);color:var(--opt-ink);font-size:13px;font-weight:700;text-decoration:none;transition:background .2s ease,color .2s ease}
.opt-button:hover{background:var(--opt-ink);color:#fff}.opt-button.primary{background:var(--opt-violet);border-color:var(--opt-violet);color:#fff}.opt-button.primary:hover{background:var(--opt-ink);border-color:var(--opt-ink)}
.opt-hero-visual{grid-area:visual;position:relative;padding:0 0 94px 58px}
.opt-art{position:relative;min-height:0;aspect-ratio:1.18/1;margin:0;background:#111;overflow:hidden;box-shadow:0 34px 80px rgba(47,34,58,.1)}
.opt-hero-person{position:absolute;z-index:4;right:-8px;bottom:0;width:min(42%,280px);margin:0;background:var(--opt-paper);border:8px solid var(--opt-ivory);box-shadow:0 20px 55px rgba(36,25,44,.18)}
.opt-hero-person img{display:block;width:100%;aspect-ratio:4/5;object-fit:cover;object-position:center 28%;filter:grayscale(100%)}
.opt-hero-person figcaption{padding:12px 13px 13px;color:var(--opt-muted);font-size:8px;font-weight:720;letter-spacing:.12em;line-height:1.45}
.opt-art .s6-art-slides,.opt-art .s6-art-slide{position:absolute;inset:0;width:100%;height:100%}
.opt-art .s6-art-slide{object-fit:cover;opacity:0;transform:scale(1.02);transition:opacity 1s ease,transform 9s ease}
.opt-art .s6-art-slide.is-active{opacity:1;transform:scale(1)}
.opt-art::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.02) 55%,rgba(0,0,0,.62));pointer-events:none}
.opt-art-caption{position:absolute;z-index:2;left:24px;right:24px;bottom:22px;display:flex;justify-content:space-between;gap:16px;color:#fff;font-size:9px;letter-spacing:.12em;text-shadow:0 2px 10px rgba(0,0,0,.6)}
.opt-art-caption a{color:inherit;text-decoration:none}
.opt-art-controls{position:absolute;z-index:3;top:22px;right:22px;display:flex;gap:6px}
.opt-art-controls button{width:34px;height:34px;border:1px solid rgba(255,255,255,.7);border-radius:50%;background:rgba(18,13,20,.25);color:#fff;font-size:9px;backdrop-filter:blur(8px);cursor:pointer}
.opt-art-controls button[aria-current=true]{background:#fff;color:var(--opt-violet)}
.opt-start{grid-area:start;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--opt-line);border-bottom:1px solid var(--opt-line)}
.opt-start a{min-height:154px;padding:28px 30px;display:grid;grid-template-rows:auto 1fr auto;border-right:1px solid var(--opt-line);color:inherit;text-decoration:none;transition:background .2s ease}
.opt-start a:last-child{border-right:0}.opt-start a:hover{background:#fff}.opt-start span{color:var(--opt-coral);font-size:10px;font-weight:760;letter-spacing:.12em}.opt-start strong{align-self:center;font-family:var(--opt-serif);font-size:26px;font-weight:500}.opt-start small{color:var(--opt-muted);font-size:12px}
.opt-section{padding:132px 0;border-top:1px solid var(--opt-line)}
.opt-now{background:var(--opt-white)}
.opt-now-grid{display:grid;grid-template-columns:minmax(160px,.28fr) minmax(480px,1fr) minmax(240px,.42fr);gap:6vw;align-items:start}
.opt-section-label p{max-width:170px;margin:18px 0 0;color:var(--opt-muted);font-size:13px;line-height:1.75}
.opt-now-body h2,.opt-section-head h2,.opt-founder-copy h2{margin:0;font-family:var(--opt-serif);font-size:clamp(46px,5vw,76px);font-weight:500;line-height:1.06;letter-spacing:-.055em}
.opt-question-list{margin:46px 0 0;padding:0;list-style:none;border-top:1px solid var(--opt-line)}
.opt-question-list li{min-height:88px;padding:22px 0;display:grid;grid-template-columns:52px 1fr;gap:20px;align-items:center;border-bottom:1px solid var(--opt-line)}
.opt-question-list span{color:var(--opt-coral);font-size:11px;font-weight:760}.opt-question-list strong{font-size:18px;font-weight:560;line-height:1.55;word-break:keep-all}
.opt-text-link{display:inline-block;margin-top:28px;color:var(--opt-violet);font-size:13px;font-weight:720;text-decoration:none}
.opt-timeline{border-top:1px solid var(--opt-ink)}
.opt-timeline div{padding:20px 0;display:grid;grid-template-columns:64px 1fr;gap:18px;border-bottom:1px solid var(--opt-line)}
.opt-timeline time{color:var(--opt-coral);font-size:12px;font-weight:760}.opt-timeline p{margin:0;font-size:13px;line-height:1.6}
.opt-reading{background:var(--opt-ivory)}
.opt-section-head{display:grid;grid-template-columns:minmax(500px,1fr) minmax(280px,.45fr);gap:7vw;align-items:end;margin-bottom:66px}
.opt-section-head span{margin-bottom:22px}.opt-section-head>p{max-width:430px;margin:0;color:var(--opt-muted);font-size:15px;line-height:1.8;word-break:keep-all}
.opt-idea-grid{display:grid;grid-template-columns:1.1fr .95fr .95fr;border-top:1px solid var(--opt-ink);border-bottom:1px solid var(--opt-ink)}
.opt-idea-grid .idea-card{min-height:300px;padding:28px 28px 34px;display:flex;flex-direction:column;justify-content:space-between;border:0;border-right:1px solid var(--opt-line);color:inherit;text-decoration:none;transition:background .2s ease}
.opt-idea-grid .idea-card:last-child{border-right:0}.opt-idea-grid .idea-card:hover{background:var(--opt-white)}
.opt-idea-grid .idea-card time{color:var(--opt-muted);font-size:11px}.opt-idea-grid .idea-card .meta{margin-bottom:14px;color:var(--opt-coral);font-size:10px;font-weight:760;letter-spacing:.1em}.opt-idea-grid .idea-card h3{margin:0;font-family:var(--opt-serif);font-size:clamp(25px,2.4vw,38px);font-weight:500;line-height:1.2;letter-spacing:-.035em}.opt-idea-grid .idea-card p{margin:22px 0 0;color:var(--opt-muted);font-size:13px;line-height:1.75}
.opt-reading-feature{margin-top:88px;display:grid;grid-template-columns:minmax(420px,1.12fr) minmax(360px,.88fr);background:var(--opt-white);border:1px solid var(--opt-line)}
.opt-reading-feature figure{min-height:540px;margin:0;overflow:hidden}.opt-reading-feature img{display:block;width:100%;height:100%;object-fit:cover;object-position:center}
.opt-reading-feature>div{padding:70px 7vw;align-self:center}.opt-reading-feature>div>span{color:var(--opt-coral);font-size:10px;font-weight:760;letter-spacing:.14em}.opt-reading-feature h3{margin:24px 0 0;font-family:var(--opt-serif);font-size:clamp(35px,3.8vw,58px);font-weight:500;line-height:1.08;letter-spacing:-.045em}.opt-reading-feature p{margin:28px 0 0;color:var(--opt-muted);font-size:15px;line-height:1.85}.opt-inline-links{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px}.opt-inline-links a{color:var(--opt-violet);font-size:12px;font-weight:720;text-decoration:none}
.opt-book{background:var(--opt-violet);color:#fff}.opt-section-head.inverse span{color:#cfbfff}.opt-section-head.inverse>p{color:rgba(255,255,255,.72)}
.opt-book-feature{display:grid;grid-template-columns:minmax(260px,.46fr) minmax(380px,.78fr) minmax(300px,.56fr);border-top:1px solid rgba(255,255,255,.28);border-bottom:1px solid rgba(255,255,255,.28)}
.opt-book-feature>figure{margin:0;padding:46px;border-right:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.04)}.opt-book-feature>figure img{display:block;width:100%;max-width:330px;margin:auto;box-shadow:0 28px 60px rgba(0,0,0,.28)}
.opt-book-copy{padding:64px 5vw;align-self:center}.opt-book-copy>span{color:#cfbfff}.opt-book-copy h3{margin:26px 0 0;font-family:var(--opt-serif);font-size:clamp(48px,5vw,78px);font-weight:500;letter-spacing:-.055em}.opt-book-copy p{max-width:530px;margin:26px 0 34px;color:rgba(255,255,255,.78);font-size:16px;line-height:1.9}.opt-button.light{border-color:#fff;color:#fff}.opt-button.light:hover{background:#fff;color:var(--opt-violet)}
.opt-book-note{padding:64px 4vw;border-left:1px solid rgba(255,255,255,.2);align-self:stretch;display:flex;flex-direction:column;justify-content:center}.opt-book-note small{color:#cfbfff;font-size:10px;font-weight:760;letter-spacing:.14em}.opt-book-note strong{display:block;margin-top:24px;font-family:var(--opt-serif);font-size:28px;font-weight:500;line-height:1.35}.opt-book-note p{margin:22px 0 0;color:rgba(255,255,255,.68);font-size:13px;line-height:1.75}.opt-book-note a{margin-top:28px;color:#fff;font-size:12px;font-weight:720;text-decoration:none}
.opt-program-ledger{border-bottom:1px solid rgba(255,255,255,.28)}
.opt-program-ledger a{min-height:94px;padding:18px 0;display:grid;grid-template-columns:48px minmax(250px,.7fr) 1fr 24px;gap:22px;align-items:center;border-bottom:1px solid rgba(255,255,255,.16);color:#fff;text-decoration:none}.opt-program-ledger a:last-child{border-bottom:0}.opt-program-ledger a>span{color:#cfbfff;font-size:11px}.opt-program-ledger small{display:block;color:rgba(255,255,255,.58);font-size:10px;letter-spacing:.08em}.opt-program-ledger strong{display:block;margin-top:5px;font-family:var(--opt-serif);font-size:22px;font-weight:500}.opt-program-ledger p{margin:0;color:rgba(255,255,255,.72);font-size:13px}.opt-program-ledger b{font-weight:400}.opt-program-ledger a:hover strong{color:#cfbfff}
.opt-founder{background:var(--opt-white)}
.opt-founder-grid{display:grid;grid-template-columns:minmax(300px,.6fr) minmax(460px,1fr) minmax(260px,.5fr);gap:5vw;align-items:center}
.opt-founder-portrait,.opt-founder-stage{margin:0}.opt-founder-portrait img,.opt-founder-stage img{display:block;width:100%;object-fit:cover}.opt-founder-portrait img{aspect-ratio:4/5;filter:grayscale(100%);object-position:center 28%}.opt-founder-stage img{aspect-ratio:3/4;object-position:58% center}.opt-founder-portrait figcaption,.opt-founder-stage figcaption{padding-top:12px;color:var(--opt-muted);font-size:9px;letter-spacing:.12em}
.opt-founder-copy>span{margin-bottom:24px}.opt-founder-copy>p{max-width:600px;margin:34px 0 0;color:var(--opt-muted);font-size:16px;line-height:1.95;word-break:keep-all}.opt-founder-copy blockquote{margin:42px 0 0;padding:28px 0;border-top:1px solid var(--opt-line);border-bottom:1px solid var(--opt-line);font-family:var(--opt-serif);font-size:28px;line-height:1.5}.opt-founder-links{display:flex;flex-wrap:wrap;gap:24px;margin-top:30px}.opt-founder-links a{color:var(--opt-violet);font-size:12px;font-weight:720;text-decoration:none}
.opt-index{background:var(--opt-paper)}
.opt-index-head{display:grid;grid-template-columns:160px minmax(360px,.8fr) minmax(260px,.5fr);gap:5vw;align-items:end;margin-bottom:50px}.opt-index-head h2{margin:0;font-family:var(--opt-serif);font-size:clamp(45px,4.5vw,68px);font-weight:500;letter-spacing:-.05em}.opt-index-head p{margin:0;color:var(--opt-muted);font-size:14px;line-height:1.8}
.opt-index .house-archive-map{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--opt-ink);border-left:1px solid var(--opt-line)}.opt-index .house-archive-map a{min-height:150px;padding:26px;display:flex;flex-direction:column;justify-content:space-between;border-right:1px solid var(--opt-line);border-bottom:1px solid var(--opt-line);color:inherit;text-decoration:none;transition:background .2s ease}.opt-index .house-archive-map a:hover{background:var(--opt-white)}.opt-index .house-archive-map strong{font-family:var(--opt-serif);font-size:34px;font-weight:500}.opt-index .house-archive-map span{color:var(--opt-muted);font-size:12px}
.opt-invite{background:var(--opt-ink);color:#fff}.opt-invite-grid{display:grid;grid-template-columns:1fr 1fr}.opt-invite a{min-height:360px;padding:70px 5vw;display:flex;flex-direction:column;border-right:1px solid rgba(255,255,255,.22);color:#fff;text-decoration:none}.opt-invite a:last-child{border-right:0}.opt-invite a>span{color:#cfbfff}.opt-invite strong{max-width:600px;margin-top:50px;font-family:var(--opt-serif);font-size:clamp(38px,4vw,60px);font-weight:500;line-height:1.08;letter-spacing:-.045em}.opt-invite p{max-width:560px;margin:24px 0 0;color:rgba(255,255,255,.66);font-size:14px;line-height:1.7}.opt-invite b{margin-top:auto;padding-top:38px;font-size:12px}.opt-invite a:hover{background:#221b25}
@media(max-width:1100px){
  .opt-hero-grid{grid-template-columns:1fr 1fr;gap:48px}.opt-art{min-height:0}.opt-now-grid{grid-template-columns:150px 1fr}.opt-timeline{grid-column:2;margin-top:24px}.opt-book-feature{grid-template-columns:280px 1fr}.opt-book-note{grid-column:1/-1;border-left:0;border-top:1px solid rgba(255,255,255,.2)}.opt-founder-grid{grid-template-columns:.72fr 1.28fr}.opt-founder-stage{display:none}.opt-index-head{grid-template-columns:120px 1fr}.opt-index-head p{grid-column:2}.opt-index .house-archive-map{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .opt-section-head{display:block}.opt-section-head>p{margin-top:24px}.opt-reading-feature{grid-template-columns:1fr}.opt-reading-feature figure{min-height:460px}.opt-reading-feature>div{padding:56px 48px}
}
@media(max-width:760px){
  .opt-hero{padding-top:104px}.opt-hero-grid{display:block}.opt-hero-copy{padding:30px 0 50px}.opt-hero-copy h1{font-size:clamp(54px,15vw,76px);line-height:.98}.opt-lede{font-size:16px;line-height:1.82}.opt-current-question{grid-template-columns:1fr}.opt-current-question>span{grid-row:auto}.opt-hero-visual{margin:0 -20px;padding:0 0 64px}.opt-art{min-height:0;aspect-ratio:1.18/1;margin:0}.opt-hero-person{right:12px;width:42%;border-width:5px}.opt-art-caption{left:16px;right:16px;bottom:16px;display:block}.opt-art-caption a{display:block;margin-top:5px}.opt-art-controls{top:14px;right:14px}.opt-start{grid-template-columns:1fr;margin:0 -20px;border-bottom:0}.opt-start a{min-height:112px;padding:22px 20px;border-right:0;border-bottom:1px solid var(--opt-line)}.opt-start strong{font-size:23px}.opt-section{padding:88px 0}.opt-now-grid{display:block}.opt-section-label{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:44px}.opt-section-label p{max-width:190px;margin:0}.opt-now-body h2,.opt-section-head h2,.opt-founder-copy h2{font-size:clamp(42px,12vw,58px)}.opt-question-list{margin-top:34px}.opt-question-list li{grid-template-columns:40px 1fr}.opt-question-list strong{font-size:16px}.opt-timeline{margin-top:54px}.opt-section-head{display:block;margin-bottom:42px}.opt-section-head>p{margin-top:24px}.opt-idea-grid{grid-template-columns:1fr}.opt-idea-grid .idea-card{min-height:230px;border-right:0;border-bottom:1px solid var(--opt-line)}.opt-idea-grid .idea-card:last-child{border-bottom:0}.opt-reading-feature{display:block;margin-top:56px}.opt-reading-feature figure{min-height:390px}.opt-reading-feature>div{padding:46px 28px}.opt-reading-feature h3{font-size:38px}.opt-book-feature{display:block}.opt-book-feature>figure{padding:34px;border-right:0;border-bottom:1px solid rgba(255,255,255,.2)}.opt-book-feature>figure img{max-width:250px}.opt-book-copy{padding:48px 0}.opt-book-copy h3{font-size:54px}.opt-book-note{padding:44px 0}.opt-program-ledger a{grid-template-columns:32px 1fr 20px;padding:22px 0}.opt-program-ledger a>p{grid-column:2}.opt-program-ledger strong{font-size:20px}.opt-founder-grid{display:block}.opt-founder-portrait{max-width:420px;margin:0 auto 52px}.opt-founder-copy blockquote{font-size:23px}.opt-index-head{display:block}.opt-index-head h2{margin-top:18px}.opt-index-head p{margin-top:20px}.opt-index .house-archive-map{grid-template-columns:1fr 1fr}.opt-index .house-archive-map a{min-height:125px;padding:20px}.opt-invite-grid{grid-template-columns:1fr}.opt-invite a{min-height:300px;padding:50px 0;border-right:0;border-bottom:1px solid rgba(255,255,255,.2)}.opt-invite strong{margin-top:34px;font-size:40px}
}
@media(max-width:390px){.opt-art{min-height:0;aspect-ratio:1.18/1}.opt-index .house-archive-map{grid-template-columns:1fr}.opt-actions{display:grid}.opt-button{width:100%}.opt-inline-links,.opt-founder-links{display:grid;gap:14px}}
@media(prefers-reduced-motion:reduce){.opt-art .s6-art-slide,.opt-button,.opt-start a,.opt-idea-grid .idea-card,.opt-index .house-archive-map a{transition:none!important}}

/* Unified R1: Instagram becomes visible evidence, not a hidden link list */
.opt-instagram{background:var(--opt-white);border-top:1px solid var(--opt-line);border-bottom:1px solid var(--opt-line)}
.opt-instagram-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--opt-ink);border-left:1px solid var(--opt-line)}
.opt-instagram-card{min-width:0;padding:20px 20px 26px;border-right:1px solid var(--opt-line);border-bottom:1px solid var(--opt-line);color:var(--opt-ink);text-decoration:none;background:var(--opt-white)}
.opt-instagram-card figure{margin:0 0 20px;aspect-ratio:1/1;overflow:hidden;background:var(--opt-ivory)}
.opt-instagram-card img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.opt-instagram-card:hover img{transform:scale(1.025)}
.opt-instagram-card span{display:block;color:var(--opt-coral);font-size:10px;font-weight:760;letter-spacing:.11em}
.opt-instagram-card strong{display:block;margin-top:10px;font-family:var(--opt-serif);font-size:22px;font-weight:500;line-height:1.35}
.opt-instagram-links{display:flex;flex-wrap:wrap;gap:24px;margin-top:28px}.opt-instagram-links a{color:var(--opt-violet);font-size:12px;font-weight:720;text-decoration:none}
@media(max-width:900px){.opt-instagram-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.opt-instagram-grid{grid-template-columns:1fr}.opt-instagram-card{padding:16px 16px 22px}.opt-instagram-card strong{font-size:21px}}

/* 언어 스위처 (국문 푸터) */
.footer-lang{display:flex;gap:8px;align-items:center;margin-top:14px;font-size:12px;letter-spacing:.06em}
.footer-lang a,.footer-lang span{padding:5px 12px;border-radius:99px;text-decoration:none;font-weight:650;line-height:1}
.footer-lang a{border:1px solid rgba(53,28,117,.28);color:#351c75}
.footer-lang a:hover{background:#351c75;color:#fff}
.footer-lang span[aria-current]{background:rgba(53,28,117,.10);color:#351c75}

/* 헤더 언어 토글 (우측 상단) */
.header-lang{display:flex;gap:6px;align-items:center;margin:0 12px 0 0;font-size:11px;letter-spacing:.06em;font-weight:700;white-space:nowrap}
.header-lang a,.header-lang span{padding:5px 10px;border-radius:99px;line-height:1;text-decoration:none;transition:background .15s ease,color .15s ease}
.header-lang a{border:1px solid rgba(53,28,117,.32);color:#351c75}
.header-lang a:hover,.header-lang a:focus-visible{background:#351c75;color:#fff}
.header-lang span[aria-current]{background:rgba(53,28,117,.10);color:#351c75}
@media (max-width:820px){.header-lang{margin-right:8px;font-size:10px}.header-lang a,.header-lang span{padding:4px 8px}}

/* SUSTAINER 브랜드 커서 (마우스 사용 환경에서만) */
@media (hover:hover) and (pointer:fine){
  body{cursor:url("/assets/cursor-sustainer.png") 2 2, auto;cursor:image-set(url("/assets/cursor-sustainer.png") 1x, url("/assets/cursor-sustainer@2x.png") 2x) 2 2, auto}
  a,button,summary,label,select,[role="button"],.button,.header-cta,input[type="submit"],input[type="button"]{cursor:url("/assets/cursor-sustainer-pointer.png") 2 2, pointer;cursor:image-set(url("/assets/cursor-sustainer-pointer.png") 1x, url("/assets/cursor-sustainer-pointer@2x.png") 2x) 2 2, pointer}
  input:not([type="submit"]):not([type="button"]):not([type="checkbox"]):not([type="radio"]),textarea,[contenteditable="true"]{cursor:text}
  input[type="checkbox"],input[type="radio"]{cursor:url("/assets/cursor-sustainer-pointer.png") 2 2, pointer}
}