/* ===== header ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:50;background:#fff;border-bottom:1px solid transparent;transition:border-color var(--dur-micro),box-shadow var(--dur-micro)}
.header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(0,0,0,.25)}
.header__in{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em}
.logo img{width:40px;height:40px;object-fit:contain}
.footer .logo img{filter:invert(1)}
.logo__text{font-family:var(--font-en);font-size:18px;line-height:1}
.logo__sub{display:block;font-family:var(--font-kr);font-size:11px;font-weight:600;color:var(--ink-2);margin-top:2px}
.nav{display:flex;gap:4px}
.nav a{padding:8px 14px;border-radius:var(--pill);font-weight:600;font-size:15px;color:var(--ink-2);transition:background var(--dur-micro),color var(--dur-micro)}
.nav a:hover,.nav a[aria-current="page"]{background:var(--surface-2);color:var(--ink)}
.nav a.nav__hi{color:var(--ink)}
.header__cta{display:flex;gap:8px;align-items:center}
.nav-toggle{display:none;width:44px;height:44px;border-radius:50%;place-items:center}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);box-shadow:0 -6px 0 var(--ink),0 6px 0 var(--ink)}
@media (max-width:900px){
  .nav{display:none;position:absolute;left:0;right:0;top:72px;flex-direction:column;padding:12px var(--gutter) 20px;background:#fff;border-bottom:1px solid var(--line)}
  .nav.is-open{display:flex}
  .nav a{padding:12px 14px;font-size:16px}
  .header__cta .btn{display:none}
  .nav-toggle{display:grid}
}

/* ===== buttons (pill) ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:var(--pill);font-weight:700;font-size:15px;line-height:1;white-space:nowrap;transition:transform var(--dur-micro) var(--ease-out),background var(--dur-micro),color var(--dur-micro),box-shadow var(--dur-micro)}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--lime{background:var(--atb-lime);color:var(--lime-ink)}
.btn--lime:hover{box-shadow:0 8px 24px rgba(224,255,64,.45)}
.btn--black{background:var(--atb-black);color:#fff}
.btn--white{background:#fff;color:var(--ink)}
.btn--outline{border:2px solid var(--ink);color:var(--ink)}
.section--dark .btn--outline{border-color:#fff;color:#fff}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px}
.btn--lg{min-height:56px;padding:0 32px;font-size:16px}
.btn .arrow{width:18px;height:18px;transition:transform var(--dur-micro)}
.btn:hover .arrow{transform:translateX(3px)}

/* ===== tags (덱의 ✔ 라임/그레이 필) ===== */
.tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--pill);font-size:14px;font-weight:700;line-height:1.4;background:var(--atb-gray);color:var(--ink)}
.tag--lime{background:var(--atb-lime);color:var(--lime-ink)}
.tag--dark{background:var(--atb-black);color:#fff}
.tag--outline{background:transparent;border:1.5px solid currentColor}
.tag .check{width:14px;height:14px;flex:none}
.tag-list{display:flex;flex-direction:column;gap:8px;align-items:flex-start}

/* eyebrow: 덱 "→ 스마트건설 솔루션 가이드북" 검정 필 */
.eyebrow{display:inline-flex;align-items:center;gap:10px;padding:8px 18px 8px 8px;border-radius:var(--pill);background:var(--atb-black);color:#fff;font-weight:700;font-size:14px}
.eyebrow__dot{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#fff;color:var(--atb-black)}
.eyebrow__dot svg{width:14px;height:14px}
.section--dark .eyebrow{background:#fff;color:var(--ink)}
.section--dark .eyebrow__dot{background:var(--atb-black);color:#fff}

/* ===== numbered circle ① ===== */
.circ{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--atb-black);color:#fff;font-family:var(--font-en);font-weight:700;font-size:20px;flex:none}
.circ--lg{width:56px;height:56px;font-size:24px}
.circ--lime{background:var(--atb-lime);color:var(--lime-ink)}

/* ===== section heading ===== */
.sec-head{display:grid;gap:12px;max-width:820px;margin-bottom:clamp(24px,3.5vw,40px)}
.sec-head__top{display:flex;align-items:center;gap:14px}
.sec-head .lead{font-size:clamp(16px,1.4vw,19px);color:var(--ink-2)}
.section--dark .sec-head .lead{color:rgba(255,255,255,.72)}
.sec-head--center{margin-inline:auto;text-align:center}
.sec-head--center .sec-head__top{justify-content:center}
.kicker{font-family:var(--font-en);font-weight:600;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.section--dark .kicker{color:rgba(255,255,255,.55)}

/* ===== KEY POINT chevron band (덱 p3/6/10/12) ===== */
.chevrons{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:chev}
.chevrons__item{position:relative;padding:14px 28px 14px 36px;background:var(--surface-2);font-weight:700;font-size:15px;text-align:center;clip-path:polygon(0 0,calc(100% - 18px) 0,100% 50%,calc(100% - 18px) 100%,0 100%,18px 50%)}
.chevrons__item:first-child{clip-path:polygon(0 0,calc(100% - 18px) 0,100% 50%,calc(100% - 18px) 100%,0 100%);border-radius:8px 0 0 8px;padding-left:28px}
.chevrons__item:last-child{clip-path:polygon(0 0,100% 0,100% 100%,0 100%,18px 50%);border-radius:0 8px 8px 0}
.chevrons__item.is-active{background:var(--atb-lime);color:var(--lime-ink)}
.chevrons__item::before{counter-increment:chev;content:"0" counter(chev) ". ";font-family:var(--font-en)}
@media (max-width:760px){.chevrons{grid-template-columns:1fr 1fr}.chevrons__item{clip-path:none!important;border-radius:8px!important;padding:12px 16px!important}}

/* ===== pill cards (덱 p2 세로 캡슐) ===== */
.pill-card{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:40px 28px 30px;background:#fff;border-radius:var(--pill);box-shadow:0 2px 0 rgba(0,0,0,.02),0 24px 60px -30px rgba(29,53,144,.25);transition:transform .35s var(--ease-out),box-shadow .35s var(--ease-out)}
.pill-card:hover{transform:translateY(-6px);box-shadow:0 2px 0 rgba(0,0,0,.02),0 32px 70px -30px rgba(29,53,144,.35)}
.pill-card__icon{width:60px;height:60px}
.pill-card__icon img{width:100%;height:100%;object-fit:contain}
.pill-card h3{font-size:22px}
.pill-card__list{display:grid;gap:10px;text-align:left;font-size:15px;color:var(--ink-2)}
.pill-card__list a{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:baseline;padding:4px 0;border-bottom:1px solid transparent;transition:color var(--dur-micro),border-color var(--dur-micro)}
.pill-card__list a:hover{color:var(--ink);border-bottom-color:var(--atb-lime)}
.pill-card__list .n{font-family:var(--font-en);font-weight:700;color:var(--ink-3);flex:none}
.pill-card__cat{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);width:100%;font-family:var(--font-en);font-weight:700;font-size:15px;letter-spacing:.04em;color:var(--ink-3);text-transform:uppercase}
.pill-card--blue .pill-card__cat{color:var(--atb-blue-900)}
.pill-card--teal .pill-card__cat{color:#2E9A97}
.pill-card--dark .pill-card__cat{color:var(--ink)}

/* ===== vertical rail (덱 좌측 QUALITY CONTROL) ===== */
.rail{position:sticky;top:96px;writing-mode:vertical-rl;transform:rotate(180deg);font-family:var(--font-en);font-weight:800;font-size:clamp(28px,3.4vw,44px);letter-spacing:.02em;color:var(--atb-gray);text-transform:uppercase;user-select:none;line-height:1}
.section--dark .rail{color:rgba(255,255,255,.08)}
.with-rail{display:grid;grid-template-columns:auto 1fr;gap:clamp(24px,4vw,64px)}
@media (max-width:900px){.with-rail{grid-template-columns:1fr}.rail{display:none}}

/* ===== brand blocks (표지 4블록) ===== */
.blocks{position:relative;aspect-ratio:1;width:100%;max-width:560px;display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr}
.block{position:relative;will-change:transform}
.block--gray{background:var(--atb-gray)}
.block--gray::after{content:"";position:absolute;inset:0;background:#fff;border-radius:100% 0 0 0}
.block--blue{background:var(--atb-blue-grad);border-radius:0 0 42% 0;overflow:hidden}
.block--teal{background:var(--atb-teal)}
.block--lime{background:var(--atb-lime);border-radius:0 var(--pill) var(--pill) 0}

/* ===== cards ===== */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .35s var(--ease-out),box-shadow .35s var(--ease-out)}
.card:hover{transform:translateY(-4px);box-shadow:0 24px 50px -28px rgba(0,0,0,.3)}
.card__media{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease-out)}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{padding:16px 18px 18px;display:grid;gap:6px}
.card__title{display:inline;background:linear-gradient(var(--atb-lime),var(--atb-lime)) no-repeat 0 100%/0% 40%;transition:background-size .4s var(--ease-out);font-weight:800;font-size:17px}
.card:hover .card__title{background-size:100% 40%}
.card p{font-size:14px;color:var(--ink-2);line-height:1.55}
.section--dark .card{background:var(--dark-2);border-color:rgba(255,255,255,.08)}
.section--dark .card p{color:rgba(255,255,255,.7)}

/* ===== hexagon badges (덱 p5) — hive 스타일 통일 ===== */
.hex{--hxw:176px;position:relative;display:grid;place-items:center;text-align:center;width:var(--hxw);height:calc(var(--hxw) * 1.1547);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);background:var(--atb-blue-grad);color:#fff;padding:22px 16px}
.hex::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.16),rgba(255,255,255,0) 45%,rgba(0,0,0,.06));pointer-events:none}
.hex--zero{background:linear-gradient(160deg,#1E2A4A,#0B0F1E)}
.hex__in{position:relative;display:grid;gap:2px}
.hex__label{font-weight:700;font-size:14px;opacity:.9}
.hex__value{font-family:var(--font-en);font-weight:800;font-size:30px;color:var(--atb-lime);line-height:1.1}
.hex__desc{font-size:11.5px;opacity:.75;line-height:1.4}
.hexes{display:flex;flex-direction:column;align-items:center}
.hexes__row{display:flex;gap:10px}
.hexes__row + .hexes__row{margin-top:calc(var(--hxw,176px) * 1.1547 * -0.25 + 6px)}
@media (max-width:640px){.hex{--hxw:150px}.hex__value{font-size:24px}.hexes__row{flex-wrap:wrap;justify-content:center}.hexes__row + .hexes__row{margin-top:10px}}

/* ===== steps (도입 프로세스) ===== */
.steps{display:grid;gap:10px;counter-reset:step}
.steps li{position:relative;display:flex;align-items:center;gap:14px;padding:14px 20px;background:var(--surface-2);border-radius:var(--pill);font-weight:600;font-size:15px}
.steps li::before{counter-increment:step;content:counter(step) ".";font-family:var(--font-en);font-weight:800;color:var(--ink)}
.steps--row{grid-template-columns:repeat(6,1fr);gap:8px}
.steps--row li{flex-direction:column;text-align:center;border-radius:14px;padding:12px 8px;font-size:13px;gap:4px}
.steps--row li::before{font-size:18px}
@media (max-width:900px){.steps--row{grid-template-columns:repeat(3,1fr)}}
@media (max-width:560px){.steps--row{grid-template-columns:repeat(2,1fr)}}

/* ===== feature rows (덱 p4 좌캡처/우텍스트) ===== */
.feat{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(20px,3vw,40px);align-items:center}
.feat__media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.feat__media img{width:100%;height:auto}
.feat__title{display:inline-block;padding:4px 10px;background:var(--atb-lime);color:var(--lime-ink);font-weight:800;font-size:18px;line-height:1.4;margin-bottom:12px}
.feat p{color:var(--ink-2);font-size:15.5px}
.feat .patent{display:block;margin-top:10px;font-size:13px;color:var(--ink-3)}
.feat-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,56px) clamp(24px,3vw,48px)}
@media (max-width:900px){.feat-grid{grid-template-columns:1fr}.feat{grid-template-columns:1fr}}

/* ===== forms ===== */
.form{display:grid;gap:18px}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:640px){.form__row{grid-template-columns:1fr}}
.field{display:grid;gap:6px}
.field label{font-size:14px;font-weight:700}
.field label .req{color:var(--danger)}
.field input,.field textarea,.field select{width:100%;padding:14px 16px;border:1.5px solid var(--line);border-radius:12px;background:#fff;font:inherit;font-size:15px;color:var(--ink);transition:border-color var(--dur-micro),box-shadow var(--dur-micro)}
.field input:focus,.field textarea:focus,.field select:focus{outline:0;border-color:var(--ink);box-shadow:0 0 0 4px rgba(224,255,64,.6)}
.field textarea{min-height:140px;resize:vertical}
.field .help{font-size:13px;color:var(--ink-3)}
.checks{display:flex;flex-wrap:wrap;gap:8px}
.checks label{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border:1.5px solid var(--line);border-radius:var(--pill);font-size:14px;font-weight:600;cursor:pointer;transition:all var(--dur-micro)}
.checks input{position:absolute;opacity:0;width:0;height:0}
.checks label:has(input:checked){background:var(--atb-lime);border-color:var(--atb-lime);color:var(--lime-ink)}
.checks label:has(input:focus-visible){outline:3px solid var(--atb-lime);outline-offset:2px}
.form__status{padding:14px 18px;border-radius:12px;font-size:15px;font-weight:600;display:none}
.form__status.is-ok{display:block;background:#EEF9EE;color:#1E6B2E}
.form__status.is-err{display:block;background:#FDECEC;color:#9C1C1C}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}

/* ===== footer ===== */
.footer{background:var(--atb-black);color:#fff;padding:64px 0 32px}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.footer h4{font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.5);margin-bottom:14px;font-family:var(--font-en)}
.footer li{font-size:15px;color:rgba(255,255,255,.8);padding:4px 0}
.footer a:hover{color:var(--atb-lime)}
.footer__bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.45)}
@media (max-width:800px){.footer__grid{grid-template-columns:1fr}}

/* ===== marquee ===== */
.marquee{overflow:hidden;-webkit-mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee__track{display:flex;gap:20px;width:max-content;animation:marquee var(--marquee-dur,40s) linear infinite}
.marquee--reverse .marquee__track{animation-direction:reverse}
.marquee:hover .marquee__track{animation-play-state:paused}
@keyframes marquee{to{transform:translateX(-50%)}}
.marquee__item{width:clamp(200px,19vw,300px);flex:none;border-radius:14px;overflow:hidden;background:var(--dark-2);position:relative}
.marquee__item img{width:100%;aspect-ratio:16/9.6;object-fit:cover}
.marquee__cap{position:absolute;left:0;right:0;bottom:0;padding:14px 16px;font-size:13px;font-weight:600;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.85));transform:translateY(100%);transition:transform .35s var(--ease-out)}
.marquee__item:hover .marquee__cap{transform:none}
@media (hover:none){.marquee__cap{transform:none}}

/* ===== phone / monitor frames ===== */
.phone{position:relative;width:100%;max-width:280px;aspect-ratio:1080/2340;border-radius:36px;background:#0b0b0b;padding:10px;box-shadow:0 30px 60px -30px rgba(0,0,0,.5)}
.phone img{width:100%;height:100%;object-fit:cover;border-radius:28px}
.monitor{position:relative;border-radius:14px;background:#111;padding:10px;box-shadow:0 40px 80px -40px rgba(0,0,0,.6)}
.monitor img{border-radius:8px;width:100%}
.monitor::after{content:"";display:block;margin:10px auto 0;width:22%;height:14px;background:linear-gradient(#ddd,#bbb);border-radius:0 0 8px 8px}


/* ===== 움직임 안내 (애니메이션 효과가 꺼진 방문자) ===== */
.motion-note{position:fixed;left:20px;bottom:20px;z-index:60;width:min(420px,calc(100% - 32px));padding:16px 16px 14px;border-radius:16px;background:#fff;color:var(--ink);box-shadow:0 24px 60px -20px rgba(0,0,0,.35),0 0 0 1px var(--line);font-size:14px;line-height:1.55;opacity:0;transform:translateY(12px);transition:opacity .25s,transform .25s}
.motion-note.is-in{opacity:1;transform:none}
.motion-note__row{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:start}
.motion-note__icon{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--atb-lime);color:var(--lime-ink);font-size:11px}
.motion-note__x{width:28px;height:28px;border-radius:50%;font-size:18px;line-height:1;color:var(--ink-3)}
.motion-note__x:hover{background:var(--surface-2);color:var(--ink)}
.motion-note__btns{display:flex;gap:8px;margin:12px 0 0 38px}
.motion-note__how{margin:10px 0 0 38px;font-size:13px}
.motion-note__how summary{list-style:none;cursor:pointer;color:var(--ink-2);font-weight:600;text-decoration:underline;text-underline-offset:3px;width:max-content}
.motion-note__how summary::-webkit-details-marker{display:none}
.motion-note__how summary::after{content:" ▾"}.motion-note__how[open] summary::after{content:" ▴"}
.motion-note__how ol{margin:8px 0 0;padding-left:18px;list-style:decimal;display:grid;gap:5px;color:var(--ink-2)}
.motion-note__tip{margin-top:8px;padding:8px 10px;border-radius:8px;background:var(--surface-2);color:var(--ink-2);font-size:12.5px}
@media (max-width:640px){.motion-note{left:16px;right:16px;bottom:16px;width:auto}.motion-note__btns,.motion-note__how{margin-left:0}}
.motion-toggle{color:rgba(255,255,255,.6);font-size:13px;text-decoration:underline;text-underline-offset:3px}
.motion-toggle:hover{color:var(--atb-lime)}