/* ===== tokens ===== */
:root{
  --ink:#17140f;
  --paper:#f6f2e9;
  --stone-50:#f6f2e9;
  --stone-100:#efe8d6;
  --stone-200:#e3d7ba;
  --stone-300:#c9bd9d;
  --stone-500:#8c7f5f;
  --stone-600:#6b6047;
  --stone-700:#4f4632;
  --stone-900:#241f16;
  --steel-600:#3a3223;
  --steel-700:#241f16;
  --accent:#a9812f;
  --accent-dark:#846722;
  --line:rgba(23,20,15,.12);
  --shadow:0 12px 32px -18px rgba(23,20,15,.35);
  --radius-s:4px;
  --radius-m:8px;
  --radius-l:16px;
  --container:1180px;
  --font:-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Pretendard','Malgun Gothic',sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--paper);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit}
h1,h2,h3{line-height:1.3;margin:0 0 .6em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.5vw,3.1rem)}
h2{font-size:clamp(1.5rem,3vw,2.2rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
ul{margin:0;padding:0}
.wrap{max-width:var(--container);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:200}
.skip-link:focus{left:12px;top:12px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(250,248,244,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;color:var(--ink)}
.brand__mark{width:20px;height:20px;border-radius:3px;background:linear-gradient(135deg,var(--steel-600),var(--accent))}
.brand__text{font-size:1.02rem}
.main-nav ul{display:flex;gap:28px;list-style:none}
.main-nav a{text-decoration:none;font-size:.95rem;font-weight:500;color:var(--stone-700)}
.main-nav a:hover{color:var(--ink)}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:36px;height:36px;background:none;border:0;cursor:pointer;padding:0}
.nav-toggle span{display:block;height:2px;background:var(--ink)}
@media (max-width:860px){
  .main-nav{position:fixed;inset:68px 0 0 0;background:var(--paper);transform:translateY(-110%);transition:transform .25s ease;overflow-y:auto}
  .main-nav.is-open{transform:translateY(0)}
  .main-nav ul{flex-direction:column;gap:0;padding:8px 24px}
  .main-nav li{border-bottom:1px solid var(--line)}
  .main-nav a{display:block;padding:16px 4px;font-size:1.05rem}
  .nav-toggle{display:flex}
}

/* ===== breadcrumb ===== */
.breadcrumb{padding:14px 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;font-size:.82rem;color:var(--stone-500)}
.breadcrumb li:not(:last-child)::after{content:'/';margin-left:6px;color:var(--stone-300)}
.breadcrumb a{text-decoration:none;color:var(--stone-600)}
.breadcrumb a:hover{color:var(--accent)}

/* ===== hero (variants share base, differ per page) ===== */
.hero{padding:56px 0 64px;border-bottom:1px solid var(--line)}
.hero h1{text-align:center}
.hero__lede{font-size:1.15rem;color:var(--stone-700);max-width:62ch;text-align:center;margin-left:auto;margin-right:auto}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px;justify-content:center}
.hero--media,.hero--split,.hero--asymmetric{display:flex;flex-direction:column;align-items:center;gap:32px}
.hero--media .hero__text,.hero--split .hero__text,.hero--asymmetric .hero__text{max-width:700px;padding:0}
.hero--media .hero__media{width:100%}
.hero--media .hero__media img{width:100%;margin:0 auto;border-radius:var(--radius-l);box-shadow:var(--shadow);aspect-ratio:16/9;object-fit:cover;display:block}
.hero--split{padding:56px 0 64px;border-bottom:1px solid var(--line)}
.hero--split .hero__media{width:100%}
.hero--split .hero__media img{width:100%;max-width:820px;margin:0 auto;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-l);display:block}
.hero--panorama .hero__media img{width:100%;aspect-ratio:21/9;object-fit:cover;object-position:center 65%;border-radius:var(--radius-l)}
.hero--grid .hero__gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:820px;margin-left:auto;margin-right:auto}
.hero--grid .hero__gallery img{aspect-ratio:1/1;object-fit:cover;border-radius:var(--radius-m)}
.hero--asymmetric .hero__media img{max-width:460px;margin:0 auto;aspect-ratio:3/4;object-fit:cover;border-radius:var(--radius-l)}
@media (max-width:860px){
  .hero--grid .hero__gallery{grid-template-columns:repeat(2,1fr)}
}

/* ===== buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 26px;border-radius:var(--radius-m);text-decoration:none;font-weight:600;font-size:.96rem;border:1px solid transparent;cursor:pointer}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-dark)}
.btn--ghost{background:transparent;border-color:var(--stone-300);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink)}

/* ===== sections/prose ===== */
section{padding:56px 0}
.section-head{max-width:70ch;margin-bottom:32px}
.section-head p{color:var(--stone-600)}
.prose{max-width:74ch}
.prose h2{margin-top:1.6em}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0}
.prose table caption{text-align:left;font-weight:600;margin-bottom:.5em}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;font-size:.95rem}
.prose th{background:var(--stone-100)}
.prose ul{margin:0 0 1.4em;padding-left:1.3em}
.prose li{margin-bottom:.4em}
.callout{background:var(--stone-100);border-left:4px solid var(--accent);padding:18px 22px;border-radius:0 var(--radius-m) var(--radius-m) 0;margin:1.6em 0}
.checklist{list-style:none;display:grid;gap:10px;margin:1.4em 0}
.checklist li{display:flex;gap:10px;padding:12px 14px;background:var(--stone-50);border:1px solid var(--line);border-radius:var(--radius-m)}
.checklist li::before{content:'✓';color:var(--accent);font-weight:700}

.diagnostic-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:1.6em 0}
.diagnostic-card{border:1px solid var(--line);border-radius:var(--radius-m);padding:18px}
.diagnostic-card h3{margin-bottom:.3em;font-size:1rem}
.diagnostic-card p{margin:0;font-size:.92rem;color:var(--stone-600)}

.timeline{list-style:none;counter-reset:step;display:grid;gap:0;margin:1.6em 0;border-left:2px solid var(--stone-200);padding-left:26px}
.timeline li{position:relative;padding-bottom:24px}
.timeline li::before{counter-increment:step;content:counter(step);position:absolute;left:-38px;top:0;width:24px;height:24px;border-radius:50%;background:var(--steel-600);color:#fff;font-size:.78rem;display:flex;align-items:center;justify-content:center}
.timeline h3{margin-bottom:.2em;font-size:1rem}
.timeline p{margin:0;color:var(--stone-600);font-size:.92rem}

/* ===== card grids ===== */
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card-grid--3{grid-template-columns:repeat(3,1fr)}
@media (max-width:960px){.card-grid,.card-grid--3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.card-grid,.card-grid--3{grid-template-columns:1fr}}
.card{display:block;text-decoration:none;color:var(--ink);border:1px solid var(--line);border-radius:var(--radius-m);overflow:hidden;background:#fff;transition:transform .2s ease,box-shadow .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card__media{aspect-ratio:1/1;overflow:hidden;background:var(--stone-100)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card__media img{transform:scale(1.04)}
.card__body{padding:16px}
.card__body h3{margin:0 0 6px;font-size:1.02rem}
.card__body p{margin:0 0 10px;font-size:.88rem;color:var(--stone-600)}
.card__link{font-size:.86rem;font-weight:600;color:var(--accent)}
.section-more{text-align:center;margin-top:28px}

/* ===== carousel ===== */
.carousel{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;-webkit-overflow-scrolling:touch}
.carousel .card{flex:0 0 240px;scroll-snap-align:start}
.carousel:focus-visible{outline:3px solid var(--accent)}

/* ===== before/after ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-grid--2{grid-template-columns:repeat(2,1fr)}
@media (max-width:960px){.case-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.case-grid,.case-grid--2{grid-template-columns:1fr}}
.ba{margin:0}
.ba__frame{position:relative;aspect-ratio:1/1;border-radius:var(--radius-m);overflow:hidden;background:var(--stone-200)}
.ba__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;user-select:none;pointer-events:none}
.ba__tag{position:absolute;top:12px;font-size:.72rem;font-weight:700;letter-spacing:.04em;background:rgba(32,29,26,.75);color:#fff;padding:4px 10px;border-radius:20px}
.ba__tag--before{left:12px}
.ba__tag--after{right:12px}
.ba__range{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize}
.ba__frame::after{content:'';position:absolute;top:0;bottom:0;left:var(--ba-pos,50%);width:3px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.2);pointer-events:none}
.ba figcaption{margin-top:10px;font-size:.92rem;color:var(--stone-600)}

/* ===== FAQ ===== */
.faq{max-width:80ch}
.faq__item{border-bottom:1px solid var(--line);padding:16px 0}
.faq__item summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary h3{margin:0;font-size:1rem}
.faq__item summary::after{content:'+';font-size:1.4rem;color:var(--accent);flex-shrink:0}
.faq__item[open] summary::after{content:'−'}
.faq__item p{margin:.8em 0 0;color:var(--stone-600)}

/* ===== related links ===== */
.related__list{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:760px){.related__list{grid-template-columns:1fr}}
.related__list a{display:block;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius-m);text-decoration:none;font-size:.92rem;font-weight:500}
.related__list a:hover{border-color:var(--accent);color:var(--accent)}

/* ===== CTA ===== */
.cta{background:var(--ink);color:#fff}
.cta__inner{max-width:var(--container);margin:0 auto;padding:0 24px;text-align:center}
.cta h2{color:#fff;margin-bottom:.4em}
.cta p{color:rgba(255,255,255,.75);max-width:56ch;margin:0 auto 24px}

/* ===== contact hero buttons ===== */
.contact-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:28px}
.contact-actions .btn{min-width:180px}

/* ===== footer ===== */
.site-footer{border-top:1px solid var(--line);padding:14px 0}
.site-footer__inner p{margin:0;font-size:.78rem;color:var(--stone-500);line-height:1.6}

/* ===== 404 ===== */
.error-page{padding:100px 0;text-align:center}
.error-page h1{font-size:clamp(3rem,10vw,6rem)}