/* ============================================================
   ㈜휴먼라이프케어 — Tesla-inspired design system
   Radical subtraction / photography(illustration)-first / near-zero UI
   ============================================================ */
:root{
  --blue:#3E6AE1;
  --blue-dark:#3357B8;
  --white:#FFFFFF;
  --ash:#F4F4F4;
  --carbon:#171A20;
  --graphite:#393C41;
  --pewter:#5C5E62;
  --silver:#8E8E8E;
  --cloud:#EEEEEE;
  --pale:#D0D1D2;
  --maxw:1280px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Noto Sans KR', -apple-system, Arial, sans-serif;
  color:var(--graphite);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 32px;}
::selection{background:var(--blue); color:#fff;}
h1,h2,h3,h4{margin:0; font-weight:500; color:var(--carbon);}

@media (prefers-reduced-motion: reduce){ *{transition:none !important; scroll-behavior:auto !important;} }

/* ---------------- NAV ---------------- */
.site-nav{
  position:sticky; top:0; z-index:200;
  background:rgba(255,255,255,0.97);
}
.nav-inner{
  max-width:var(--maxw); margin:0 auto; padding:0 32px;
  height:64px; display:flex; align-items:center; justify-content:space-between;
}
.wordmark{
  font-size:15px; font-weight:500; letter-spacing:0.18em; color:var(--carbon);
  display:flex; align-items:center; gap:9px;
}
.logo-mark{width:26px; height:auto; display:block;}
.nav-links{display:flex; align-items:center; gap:4px;}
.nav-links > a{
  font-size:14px; font-weight:500; color:var(--carbon);
  padding:8px 16px; border-radius:4px; transition:background-color .33s, color .33s;
}
.nav-links > a:hover, .nav-links > a.active{background:var(--ash);}
.nav-dropdown{position:relative;}
.nav-drop-trigger{
  font-family:inherit; font-size:14px; font-weight:500; color:var(--carbon);
  background:none; border:none; cursor:pointer; padding:8px 16px; border-radius:4px;
  transition:background-color .33s;
}
.nav-drop-trigger:hover, .nav-drop-trigger.active{background:var(--ash);}
.dropdown-panel{
  position:absolute; top:calc(100% + 8px); left:50%; transform:translateX(-50%);
  background:var(--white); border-radius:4px; padding:12px;
  display:none; flex-direction:column; gap:2px; width:280px;
  box-shadow:0 0 0 1px var(--cloud);
}
.nav-dropdown:hover .dropdown-panel, .nav-dropdown.open .dropdown-panel{display:flex;}
.drop-item{padding:12px 14px; border-radius:4px; transition:background-color .33s;}
.drop-item:hover{background:var(--ash);}
.drop-title{display:block; font-size:14.5px; font-weight:500; color:var(--carbon);}
.drop-desc{display:block; font-size:12.5px; color:var(--pewter); margin-top:3px;}
.nav-cta{
  background:var(--blue); color:#fff; font-size:14px; font-weight:500;
  padding:0 20px; height:40px; display:flex; align-items:center; border-radius:4px;
  transition:background-color .33s;
}
.nav-cta:hover{background:var(--blue-dark);}
.nav-toggle{display:none; background:none; border:none; font-size:22px; color:var(--carbon); cursor:pointer;}
@media (max-width:960px){
  .nav-links{
    position:fixed; top:64px; left:0; right:0; bottom:0; background:#fff;
    flex-direction:column; align-items:stretch; padding:12px 20px; gap:0;
    transform:translateY(-110%); transition:transform .33s ease; overflow-y:auto;
    z-index:199;
  }
  .nav-links.open{transform:translateY(0);}
  .nav-links > a{padding:16px 4px; border-bottom:1px solid var(--cloud); border-radius:0;}
  .nav-dropdown{width:100%;}
  .nav-drop-trigger{width:100%; text-align:left; padding:16px 4px; border-bottom:1px solid var(--cloud); border-radius:0;}
  .dropdown-panel{position:static; transform:none; width:100%; box-shadow:none; display:none; padding:0 0 8px;}
  .nav-dropdown.open .dropdown-panel{display:flex;}
  .nav-cta{display:none;}
  .nav-toggle{display:block;}
}

/* ---------------- HERO (full-viewport) ---------------- */
.hero{
  min-height:86vh; display:flex; align-items:center; position:relative; overflow:hidden;
  background:linear-gradient(155deg, #EAF0FB 0%, #F7F9FC 45%, #FFFFFF 100%);
}
.hero.dark{
  background:linear-gradient(160deg, #171A20 0%, #1F242C 60%, #171A20 100%); color:#fff;
}
.hero-content{max-width:var(--maxw); margin:0 auto; padding:0 32px; width:100%; text-align:center;}
.hero-eyebrow{font-size:14px; font-weight:500; color:var(--blue); margin-bottom:18px;}
.hero.dark .hero-eyebrow{color:#8FB0FF;}
.hero-title{font-size:clamp(32px,5vw,56px); font-weight:500; line-height:1.22; margin:0 0 22px; color:var(--carbon);}
.hero.dark .hero-title{color:#fff;}
.hero-sub{font-size:17px; color:var(--pewter); max-width:620px; margin:0 auto 36px; font-weight:400;}
.hero.dark .hero-sub{color:#B7BEC8;}
.hero-btns{display:flex; gap:12px; justify-content:center; flex-wrap:wrap;}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  height:44px; padding:0 26px; border-radius:4px; font-size:14px; font-weight:500;
  border:none; cursor:pointer; transition:background-color .33s, color .33s;
  min-width:170px;
}
.btn-primary{background:var(--blue); color:#fff;}
.btn-primary:hover{background:var(--blue-dark);}
.btn-secondary{background:#fff; color:var(--graphite); box-shadow:0 0 0 1px var(--pale) inset;}
.btn-secondary:hover{background:var(--ash);}
.hero.dark .btn-secondary{background:rgba(255,255,255,0.06); color:#fff; box-shadow:0 0 0 1px rgba(255,255,255,0.25) inset;}

.hero-visual{margin-top:48px;}

.hero-photo{
  background:
    linear-gradient(180deg, rgba(10,14,18,0.72) 0%, rgba(10,14,18,0.55) 45%, rgba(10,14,18,0.82) 100%),
    url('../img/hero/hero-field.jpg');
  background-size:cover;
  background-position:center;
}
.hero-logo{width:120px; height:auto; margin:0 auto 28px; display:block;}


/* ---------------- SECTION ---------------- */
section{padding:96px 0;}
section.tight{padding:64px 0;}
.section-head{max-width:680px; margin:0 auto 56px; text-align:center;}
.section-eyebrow{font-size:14px; font-weight:500; color:var(--blue); margin-bottom:14px;}
.section-title{font-size:clamp(24px,3vw,34px); font-weight:500; margin:0 0 14px; color:var(--carbon);}
.section-sub{font-size:15.5px; color:var(--pewter); font-weight:400;}
.section-head.left{margin:0 0 48px; text-align:left;}

.bg-ash{background:var(--ash);}
.bg-dark{background:var(--carbon); color:#fff;}
.bg-dark .section-title{color:#fff;}
.bg-dark .section-sub{color:#B7BEC8;}

/* ---------------- GRID / CARDS ---------------- */
.grid{display:grid; gap:24px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media (max-width:960px){ .grid-3, .grid-4{grid-template-columns:repeat(2,1fr);} }
@media (max-width:640px){ .grid-2, .grid-3, .grid-4{grid-template-columns:1fr;} }

.card{background:var(--white); border-radius:4px; padding:0;}
.card-flat{background:var(--ash); border-radius:12px; padding:28px;}

/* feature list */
.feature-list{list-style:none; margin:0; padding:0; display:grid; gap:0;}
.feature-list li{
  display:flex; gap:14px; padding:18px 0; border-top:1px solid var(--cloud);
  font-size:14.5px; color:var(--graphite); align-items:flex-start;
}
.feature-list li:last-child{border-bottom:1px solid var(--cloud);}
.feature-list b{color:var(--carbon); font-weight:500;}
.feature-dot{width:6px; height:6px; border-radius:50%; background:var(--blue); margin-top:8px; flex-shrink:0;}

/* ---------------- PRODUCT CARDS ---------------- */
.product-card{
  border-radius:12px; overflow:hidden; background:var(--ash);
  display:flex; flex-direction:column;
}
.product-media{
  aspect-ratio:4/3; background:#fff; display:flex; align-items:center; justify-content:center;
  padding:24px; overflow:hidden;
}
.product-media img{width:100%; height:100%; object-fit:contain;}
.product-media svg{width:100%; height:100%;}
.product-body{padding:24px 24px 28px;}
.product-tag{font-size:12.5px; font-weight:500; color:var(--blue); margin-bottom:8px;}
.product-name{font-size:19px; font-weight:500; color:var(--carbon); margin-bottom:8px;}
.product-desc{font-size:13.5px; color:var(--pewter); margin-bottom:18px; min-height:40px;}
.product-specs{list-style:none; margin:0 0 18px; padding:0;}
.product-specs li{display:flex; justify-content:space-between; font-size:13px; padding:9px 0; border-top:1px solid var(--cloud);}
.product-specs li span:first-child{color:var(--pewter);}
.product-specs li span:last-child{font-weight:500; color:var(--carbon); text-align:right;}
.product-price{font-size:18px; font-weight:500; color:var(--carbon);}
.product-price small{display:block; font-size:11.5px; font-weight:400; color:var(--silver); margin-top:2px;}

/* category tab pills (product hub landing) */
.cat-pills{display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin-top:28px;}
.cat-pill{font-size:13px; font-weight:500; padding:9px 18px; border-radius:20px; box-shadow:0 0 0 1px var(--pale) inset; color:var(--graphite);}
.cat-pill.on{background:var(--blue); color:#fff; box-shadow:none;}

/* Category landing card (large) */
.cat-card{
  border-radius:12px; overflow:hidden; position:relative; min-height:340px;
  display:flex; align-items:flex-end; padding:32px; color:#fff;
}
.cat-card .cc-label{font-size:20px; font-weight:500; margin-bottom:6px;}
.cat-card .cc-desc{font-size:13.5px; color:rgba(255,255,255,0.82); max-width:320px;}
.cat-card::before{content:''; position:absolute; inset:0; z-index:0;}
.cat-card > *{position:relative; z-index:1;}

/* ---------------- TIMELINE (odor system operation logic) ---------------- */
.tl-track{display:flex; height:56px; border-radius:6px; overflow:hidden; margin-bottom:16px;}
.tl-seg{display:flex; align-items:center; justify-content:center; font-size:12.5px; font-weight:500;}
.tl-peak{width:37.5%; background:var(--blue); color:#fff;}
.tl-focus{width:8.3%; background:var(--carbon); color:#fff;}
.tl-night{width:54.2%; background:var(--cloud); color:var(--pewter);}
.tl-labels{display:flex; justify-content:space-between; font-size:12px; color:var(--silver); margin-bottom:40px;}

/* ---------------- PROCESS STEPS ---------------- */
.steps-row{display:grid; grid-template-columns:repeat(4,1fr); gap:0;}
.step-item{padding:0 22px; position:relative;}
.step-item:not(:first-child){border-left:1px solid var(--cloud);}
.step-num{font-size:28px; font-weight:500; color:var(--blue); margin-bottom:14px;}
.step-name{font-size:15.5px; font-weight:500; color:var(--carbon); margin-bottom:8px;}
.step-desc{font-size:13.5px; color:var(--pewter);}
@media (max-width:900px){.steps-row{grid-template-columns:1fr 1fr;} .step-item:nth-child(3){border-left:none;}}
@media (max-width:560px){.steps-row{grid-template-columns:1fr;} .step-item{border-left:none !important; padding-left:0;}}

/* ---------------- FORM ---------------- */
.form-card{background:var(--ash); border-radius:12px; padding:36px;}
.form-row{display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:16px;}
.field{display:flex; flex-direction:column; gap:7px;}
.field.full{grid-column:1/3;}
.field label{font-size:13px; font-weight:500; color:var(--carbon);}
.field input, .field select, .field textarea{
  font-family:inherit; font-size:14px; padding:12px 14px; border-radius:4px;
  border:none; box-shadow:0 0 0 1px var(--pale) inset; background:#fff; color:var(--carbon);
}
.field input:focus, .field select:focus, .field textarea:focus{outline:none; box-shadow:0 0 0 2px var(--blue) inset;}
.field textarea{min-height:120px; resize:vertical; font-family:inherit;}
.field-note{font-size:12px; color:var(--silver); margin-top:14px;}
@media (max-width:640px){ .form-row{grid-template-columns:1fr;} .field.full{grid-column:1/2;} .form-card{padding:24px;} }

/* ---------------- CONTACT INFO ---------------- */
.info-list{list-style:none; margin:0; padding:0; display:grid; gap:16px;}
.info-list li{display:flex; gap:14px; font-size:14.5px; padding:16px 0; border-top:1px solid var(--cloud);}
.info-list b{min-width:88px; color:var(--carbon); font-weight:500;}
.map-box{border-radius:12px; overflow:hidden; background:var(--ash); min-height:280px; display:flex; align-items:center; justify-content:center; color:var(--silver); font-size:13px;}

/* ---------------- FOOTER ---------------- */
.site-footer{background:var(--ash); padding:64px 0 28px; margin-top:40px;}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:32px; margin-bottom:40px;}
.footer-brand{font-size:16px; font-weight:500; color:var(--carbon); margin-bottom:12px;}
.footer-desc{font-size:13.5px; color:var(--pewter); max-width:320px;}
.footer-col-title{font-size:13px; font-weight:500; color:var(--carbon); margin-bottom:14px;}
.footer-col{display:flex; flex-direction:column; gap:10px; font-size:13.5px; color:var(--pewter);}
.footer-bottom{border-top:1px solid var(--pale); padding-top:20px; font-size:12.5px; color:var(--silver);}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr; gap:28px;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}

/* reveal */
.reveal{opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1; transform:translateY(0);}