:root{
  --bg:#F6F6F4; --surface:#FFFFFF; --surface-2:#ECEEEF;
  --ink:#1B1D1F; --ink-soft:#4B5259; --ink-faint:#8A9198;
  --line:#DCDFE1; --line-alt:#C7CCCF;
  --accent:#2E5C7A; --accent-dark:#1E3F55; --accent-soft:#E4ECF1;
  --panel:#14181B; --panel-2:#1E2529; --panel-text:#F2F4F5; --panel-text-muted:#9BA3AA;
  --radius:4px; --radius-pill:999px;
  --maxw:1280px;
  --gutter:clamp(20px,4vw,48px); --section-pad:clamp(56px,8vw,104px);
  --ease:cubic-bezier(.22,1,.36,1);
  --font:'Pretendard Variable','Pretendard',-apple-system,BlinkMacSystemFont,'Malgun Gothic',sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-weight:400;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
h1,h2,h3{line-height:1.35;font-weight:700;letter-spacing:-0.015em;margin:0 0 .6em}
h1{font-size:clamp(28px,4vw,42px)}
.hero__subtitle{font-size:clamp(28px,4vw,42px);line-height:1.35;font-weight:700;letter-spacing:-0.015em;color:var(--ink);margin:0 0 .6em}
.hero h1{margin-bottom:.15em;color:var(--accent)}
h2{font-size:clamp(22px,3vw,30px)}
h3{font-size:clamp(17px,2vw,20px)}
p{margin:0 0 1em}
table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:15px}
table caption{text-align:left;font-weight:700;margin-bottom:.5em}
th,td{border:1px solid var(--line);padding:12px 14px;text-align:left}
th{background:var(--surface-2);font-weight:700}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
@media(max-width:600px){
  table{font-size:13px}
  table caption{font-size:14px}
  th,td{padding:9px 10px;white-space:nowrap}
}
ul.plain{padding-left:1.2em;margin:0 0 1em}
ul.plain li{margin-bottom:.4em}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,246,244,.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.brand{font-weight:800;font-size:18px;display:flex;flex-direction:column;line-height:1.2}
.brand__sub{font-size:11px;font-weight:500;color:var(--ink-faint)}
.gnb{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:600}
.gnb a{color:var(--ink-soft)}
.gnb__cta{color:var(--accent)}
.header-tel{background:var(--accent);color:#fff;padding:10px 18px;border-radius:var(--radius-pill);font-weight:700;font-size:14px;white-space:nowrap}
@media(max-width:760px){.gnb{display:none}}

/* hero */
.hero{padding:clamp(48px,8vw,88px) 0 var(--section-pad);background:linear-gradient(180deg,var(--bg),var(--surface))}
.hero__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero__lede{font-size:18px;color:var(--ink-soft);max-width:52ch}
.hero__meta{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}
.hero__meta span{background:var(--accent-soft);color:var(--accent-dark);padding:6px 14px;border-radius:var(--radius-pill);font-size:13px;font-weight:700}
.hero__cta{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 26px;border-radius:var(--radius-pill);font-weight:700;font-size:15px;transition:transform .2s var(--ease),background .2s}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-dark)}
.btn--ghost{background:var(--surface);border:1px solid var(--line-alt);color:var(--ink)}
.hero__figure{border-radius:8px;overflow:hidden;border:1px solid var(--line)}

/* sections */
section{padding:var(--section-pad) 0}
.section-head{max-width:62ch;margin-bottom:36px}
.section-head p{color:var(--ink-soft)}
.eyebrow{display:block;font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}

/* services */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,3vw,30px)}
.card h3{margin-bottom:.5em}
.card p{color:var(--ink-soft);font-size:14px;margin-bottom:0}
@media(max-width:900px){.services-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.services-grid{grid-template-columns:1fr}}

/* brand/service definition panel */
.brand-panel{background:var(--panel);color:var(--panel-text)}
.brand-panel .section-head p{color:var(--panel-text-muted)}
.brand-panel .eyebrow{color:#8FB4CC}
.brand-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.brand-grid .card{background:var(--panel-2);border-color:#2B333A;color:var(--panel-text)}
.brand-grid .card p{color:var(--panel-text-muted)}
@media(max-width:700px){.brand-grid{grid-template-columns:1fr}}

/* cases */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.case-card__img{aspect-ratio:4/3;overflow:hidden}
.case-card__img img{width:100%;height:100%;object-fit:cover}
.case-card__body{padding:18px 20px 22px}
.case-card__tag{font-size:12px;font-weight:700;color:var(--accent);margin-bottom:6px;display:block}
.case-card__body h3{font-size:17px;margin-bottom:8px}
.case-card__body p{font-size:14px;color:var(--ink-soft);margin-bottom:0}
@media(max-width:900px){.case-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.case-grid{grid-template-columns:1fr}}

/* faq (accordion via native details/summary) */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:820px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 24px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{font-size:16px;margin:0}
.faq-item summary::after{content:'+';font-size:22px;line-height:1;font-weight:400;color:var(--accent);flex-shrink:0}
.faq-item[open] summary::after{content:'−'}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.faq-item p{color:var(--ink-soft);font-size:14px;margin:0;padding:0 24px 20px}

/* cta band */
.cta-band{background:var(--accent-dark);color:#fff;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:#D8E4EC;max-width:56ch;margin:0 auto 24px}

/* case detail */
.case-hero{padding:40px 0 20px}
.breadcrumb{font-size:13px;color:var(--ink-faint);margin-bottom:16px}
.breadcrumb a{color:var(--ink-faint)}
.case-meta-table{max-width:640px}
.blog-col{max-width:720px;margin:0 auto;counter-reset:block}
.blog-col .case-gallery{max-width:720px}
.story-block{margin:0;padding:36px 0}
.story-block + .story-block{border-top:1px solid var(--line)}
.story-block h2{counter-increment:block;font-size:clamp(19px,2.4vw,23px);display:flex;align-items:center;gap:10px}
.story-block h2::before{content:counter(block);display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;flex-shrink:0;border-radius:50%;background:var(--accent-soft);color:var(--accent-dark);font-size:14px;font-weight:800}
.story-block p{font-size:17px;line-height:1.9;color:var(--ink-soft)}
.story-block figure{margin:0 0 16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.story-block figure img{aspect-ratio:3/4;object-fit:cover;width:100%}
.story-block figcaption{font-size:13px;color:var(--ink-faint);padding:10px 14px;margin-top:0}
.case-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:24px 0}
.case-gallery figure{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.case-gallery img{aspect-ratio:3/4;object-fit:cover;width:100%}
.case-gallery figcaption{font-size:13px;color:var(--ink-faint);padding:10px 14px}
@media(max-width:640px){.case-gallery{grid-template-columns:1fr}}
.case-photo{max-width:420px;margin:0 auto 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.case-photo img{aspect-ratio:3/4;object-fit:cover;width:100%}
.case-photo figcaption{font-size:13px;color:var(--ink-faint);padding:10px 14px}
.comment-box{background:var(--accent-soft);border-left:4px solid var(--accent);padding:20px 24px;border-radius:var(--radius);margin:32px 0}
.related-cases{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:640px}
@media(max-width:560px){.related-cases{grid-template-columns:1fr}}

/* consultation */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.steps li{list-style:none;counter-increment:step;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.steps li::before{content:counter(step);display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;font-weight:800;margin-bottom:12px}
@media(max-width:760px){.steps{grid-template-columns:1fr}}
.consult-cta{display:flex;gap:14px;flex-wrap:wrap}

/* floating cta */
.floating-cta{position:fixed;right:20px;bottom:20px;z-index:60}
.floating-cta__btn{background:var(--accent);color:#fff;padding:14px 22px;border-radius:var(--radius-pill);font-weight:700;box-shadow:0 8px 24px rgba(30,63,85,.28)}

/* footer */
.site-footer{background:var(--panel);color:var(--panel-text-muted);padding:48px 0 24px;font-size:14px}
.site-footer__inner{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.site-footer__brand{color:#fff;font-weight:800;font-size:16px;margin-bottom:8px}
.site-footer__biz p{margin:0 0 4px}
.site-footer__nav{display:flex;flex-direction:column;gap:8px}
.site-footer__copy{text-align:center;color:#6B7278;font-size:12px;margin-top:32px}

@media(max-width:900px){.hero__grid{grid-template-columns:1fr}.brand-grid{grid-template-columns:1fr 1fr}}