:root{--white:#fff;--paper:#f7f8f7;--air:#e5f1f7;--mist:#bdd9e9;--sky:#80b2cf;--deep:#3d7293;--ink:#303b43;--muted:#677782;--coral:#f3a185;--purple:#5b3a70;--purple-soft:#eee8f1;--line:#cedbe1;--max:1440px;--accent:var(--deep);--accent-soft:var(--air);--font:"Pretendard Variable",Pretendard,"Apple SD Gothic Neo","Noto Sans KR",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);line-height:1.65;word-break:keep-all}body.purple{--accent:var(--purple);--accent-soft:var(--purple-soft)}body.chestnut{--accent:#82472f;--accent-soft:#f4e9df}.chestnut .accent{background:#b66a3d}a{color:inherit;text-underline-offset:4px}img{display:block;width:100%;height:auto}em,i{font-style:normal}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.15;letter-spacing:-.04em}h1{font-size:clamp(2.8rem,7vw,7rem);font-weight:600}h2{font-size:clamp(1.8rem,3.5vw,3.8rem)}h3{font-size:1.2rem}.shell{max-width:var(--max);margin:auto}.eyebrow{font-size:.72rem;letter-spacing:.16em;font-weight:800;color:var(--accent);text-transform:uppercase}.muted{color:var(--muted)}.accent{width:58px;height:6px;background:var(--coral)}.purple .accent{background:var(--purple)}
header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}nav{max-width:var(--max);margin:auto;display:flex;justify-content:space-between;align-items:center;padding:.78rem 3vw;gap:2rem}.brand{font-weight:750;text-decoration:none}.brand span{color:var(--accent)}.navlinks{display:flex;gap:1.1rem;font-size:.76rem}.navlinks a{text-decoration:none}.navlinks a:hover{color:var(--accent)}
.hero{display:grid;grid-template-columns:.88fr 1.12fr;min-height:620px;background:var(--white)}.hero-copy{padding:clamp(3rem,6vw,6rem) 4vw;display:flex;flex-direction:column;justify-content:center}.hero h1 em{font-style:normal;color:var(--accent)}.hero-media{position:relative;min-height:520px;overflow:hidden}.hero-media img{height:100%;object-fit:cover}.hero-media:after{content:"";position:absolute;left:0;right:0;bottom:0;height:7px;background:var(--coral)}.purple .hero-media:after{background:var(--purple)}.meta{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem;border-top:1px solid var(--line);padding-top:1rem;margin-top:1.4rem;color:var(--muted);font-size:.75rem}
section{background:var(--white);padding:clamp(2.8rem,5vw,5rem) 3vw;margin-top:8px}.section-head{max-width:950px;margin-bottom:2rem}.section-head p:last-child{color:var(--muted)}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card{display:flex;flex-direction:column;background:var(--paper);border-top:5px solid var(--accent);min-height:220px;padding:1.35rem;text-decoration:none}.card:hover{background:var(--accent-soft)}.card .no{font-size:2.5rem;font-weight:700;color:var(--mist);line-height:1}.card h3{margin:.8rem 0 .4rem}.card p{color:var(--muted);font-size:.84rem}.status{margin-top:auto;display:inline-flex;align-self:flex-start;padding:.24rem .5rem;background:var(--accent-soft);color:var(--accent);font-size:.68rem;font-weight:750}.status.fail{background:#fff0ea;color:#98533d}.status.pass{background:#e9f5ee;color:#347255}
.process{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--line);border-top:1px solid var(--line)}.step{padding:1.2rem;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:150px}.step b{display:block;color:var(--accent);font-size:.72rem;letter-spacing:.1em}.step p{font-size:.78rem;color:var(--muted)}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.shot{margin:0;border-top:1px solid var(--line);padding-top:.7rem}.shot img{aspect-ratio:4/3;object-fit:contain;background:var(--accent-soft)}.shot.portrait img{aspect-ratio:4/5}.shot figcaption{font-size:.76rem;color:var(--muted);padding:.65rem 0}.shot strong{color:var(--ink)}
table{width:100%;border-collapse:collapse}th,td{text-align:left;vertical-align:top;border-top:1px solid var(--line);padding:.8rem .7rem;font-size:.8rem}th{color:var(--accent);font-size:.7rem;letter-spacing:.05em}.note{background:var(--accent-soft);border-left:5px solid var(--accent);padding:1rem 1.2rem;margin-top:1.2rem}.note.coral{background:#fff4ef;border-left-color:var(--coral)}
.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:4vw}.toc{position:sticky;top:75px;align-self:start}.toc a{display:block;border-top:1px solid var(--line);padding:.7rem 0;text-decoration:none;font-size:.8rem}.toc a:hover{color:var(--accent)}.content-block{margin-bottom:2.5rem}.bullet{padding-left:1.1rem}.bullet li{margin:.45rem 0}.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.compare article{border-top:5px solid var(--deep);padding:1.2rem 0}.compare article:last-child{border-color:var(--purple)}
footer{background:var(--ink);color:#fff;padding:2.3rem 3vw}.footer-grid{max-width:var(--max);margin:auto;display:flex;justify-content:space-between;gap:2rem}.footer-grid p{color:#c8d0d4;font-size:.8rem}.crumbs{font-size:.72rem;color:var(--muted);margin-bottom:1rem}.crumbs a{text-decoration:none}.case-hero{background:var(--white);padding:clamp(3rem,6vw,6rem) 3vw}.case-hero h1{font-size:clamp(2.5rem,6vw,6rem);max-width:1000px}.case-hero .intro{font-size:clamp(1.05rem,2vw,1.5rem);max-width:800px;color:var(--muted)}
@media(max-width:900px){.hero{grid-template-columns:1fr}.hero-media{order:-1;min-height:420px}.cards,.process,.grid-3{grid-template-columns:repeat(2,1fr)}.split{grid-template-columns:1fr}.toc{position:static}.navlinks{display:none}}
@media(max-width:620px){.cards,.process,.grid-2,.grid-3,.gallery,.compare{grid-template-columns:1fr}.hero-media{min-height:320px}.hero-copy{padding:2.5rem 6vw}.footer-grid{display:block}}

/* Detailed project report */
.report-hero{background:var(--white);padding:clamp(3.2rem,7vw,7rem) 3vw 3.5rem;border-bottom:8px solid var(--purple)}
.report-hero .shell{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);gap:5vw;align-items:end}.report-hero h1{max-width:980px;margin-bottom:1.4rem}.report-hero .lead{max-width:860px;font-size:clamp(1rem,1.7vw,1.35rem);color:var(--muted)}
.fact-panel{border-top:5px solid var(--purple);background:var(--purple-soft);padding:1.4rem}.fact-panel dl{display:grid;grid-template-columns:auto 1fr;gap:.55rem 1rem;margin:0}.fact-panel dt{font-size:.72rem;font-weight:800;color:var(--purple)}.fact-panel dd{margin:0;font-size:.84rem}
.anchor-nav{background:var(--ink);color:white;position:sticky;top:57px;z-index:9}.anchor-nav .shell{display:flex;gap:.35rem;overflow:auto;padding:.55rem 3vw}.anchor-nav a{white-space:nowrap;text-decoration:none;padding:.55rem .75rem;border:1px solid #53616a;font-size:.76rem}.anchor-nav a:hover,.anchor-nav a:focus-visible{background:white;color:var(--ink)}
.explain{max-width:900px;font-size:1rem;color:var(--muted)}.plain-definition{display:grid;grid-template-columns:160px 1fr;border-top:1px solid var(--line)}.plain-definition strong,.plain-definition span{padding:.8rem;border-bottom:1px solid var(--line)}.plain-definition strong{color:var(--accent)}
.model-key{display:flex;flex-wrap:wrap;gap:.6rem;margin:1rem 0}.model-badge{display:inline-flex;align-items:center;min-height:30px;padding:.25rem .65rem;font-size:.68rem;font-weight:850;letter-spacing:.08em;color:white}.model-badge.gpt{background:var(--deep)}.model-badge.gemini{background:var(--purple)}.model-badge.fail{background:#98533d}.model-badge.current{background:#347255}
.gallery-full{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.image-record{margin:0;border-top:5px solid var(--deep);background:var(--paper)}.image-record.gemini{border-color:var(--purple)}.image-record img{aspect-ratio:4/5;object-fit:contain;background:#e8eaeb}.image-record.square img{aspect-ratio:1}.image-record.landscape img{aspect-ratio:4/3}.image-record figcaption{padding:1rem}.image-record h3{margin:.45rem 0}.image-record p{font-size:.82rem;color:var(--muted);margin-bottom:0}.image-record .file{display:block;margin-top:.7rem;font-size:.68rem;line-height:1.45;color:#7b868c;word-break:break-all}
.chapter{counter-reset:sub}.chapter-intro{display:grid;grid-template-columns:minmax(180px,.35fr) minmax(0,1fr);gap:3vw;margin-bottom:2rem}.chapter-intro h2{margin-bottom:0}.chapter-intro .explain{padding-top:.35rem}
.timeline{border-left:3px solid var(--purple);margin-left:.55rem}.timeline article{position:relative;padding:0 0 2rem 2rem}.timeline article:before{content:"";position:absolute;left:-.57rem;top:.2rem;width:.9rem;height:.9rem;background:white;border:3px solid var(--purple);border-radius:50%}.timeline h3{margin-bottom:.4rem}.timeline p{color:var(--muted);max-width:920px}
.prompt-block{margin:1.1rem 0 2rem;border-top:5px solid var(--purple);background:#23282c;color:#eef2f3}.prompt-block header{position:static;background:transparent;border:0;backdrop-filter:none;padding:1rem 1.2rem .2rem}.prompt-block header h3{margin:0;color:white}.prompt-block header p{margin:.35rem 0;color:#bac5ca;font-size:.82rem}.prompt-block pre{white-space:pre-wrap;word-break:break-word;margin:0;padding:1rem 1.2rem 1.3rem;border-top:1px solid #465159;font-family:"SFMono-Regular",Consolas,monospace;font-size:.76rem;line-height:1.6;color:#f3f5f6}.prompt-explain{background:var(--purple-soft);border-left:5px solid var(--purple);padding:1rem 1.2rem;margin:-1rem 0 2rem;font-size:.86rem}
.accuracy{background:#fff8ef;border-left:5px solid var(--coral);padding:1.2rem 1.4rem}.accuracy h3{margin-bottom:.55rem}.accuracy p:last-child{margin-bottom:0}.checklist{columns:2;column-gap:2rem;padding-left:1.2rem}.checklist li{break-inside:avoid;margin:0 0 .7rem;padding-left:.25rem}
.summary-band{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}.summary-band article{background:white;padding:1.25rem}.summary-band strong{display:block;font-size:2rem;color:var(--purple);line-height:1}.summary-band span{font-size:.76rem;color:var(--muted)}
@media(max-width:1000px){.gallery-full{grid-template-columns:repeat(2,minmax(0,1fr))}.report-hero .shell,.chapter-intro{grid-template-columns:1fr}.summary-band{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.gallery-full,.summary-band{grid-template-columns:1fr}.checklist{columns:1}.plain-definition{grid-template-columns:1fr}.plain-definition strong{padding-bottom:.2rem;border-bottom:0}.plain-definition span{padding-top:.2rem}.anchor-nav{top:54px}}