/* ═══ AT Hotels Management — 공용 스타일 (라이트 테마: 기존 사이트 톤 유지) ═══ */
:root{
  --ink:#1c2733;          /* 짙은 차콜 네이비 (제목) */
  --paper:#ffffff;        /* 흰 배경 */
  --paper-2:#f6f4ef;      /* 옅은 아이보리 (교차 섹션) */
  --gold:#b99a4a;         /* 포인트 골드 (절제해서 사용) */
  --gold-soft:#d8c185;
  --text:#3d434a;
  --muted:#7a828b;
  --line:#e8e4da;
  --tbd:#c92a2a;
  --maxw:1120px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Pretendard Variable',Pretendard,-apple-system,'Noto Sans KR',sans-serif;
  background:var(--paper);color:var(--text);line-height:1.75;font-size:16.5px;
}
.serif{font-family:'Noto Serif KR',serif}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.tbd{color:var(--tbd);border-bottom:2px dashed var(--tbd);cursor:help;font-style:normal}

/* ── 헤더 (흰 배경) ── */
.top{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);
  color:var(--ink);border-bottom:1px solid var(--line);
}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{height:44px;width:auto}
.brand .mark{font-family:'Noto Serif KR',serif;font-weight:700;font-size:20px;letter-spacing:.4px;color:var(--ink);line-height:1.2}
.brand .mark b{color:var(--gold)}
.brand small{display:block;font-size:10.5px;letter-spacing:2.5px;color:var(--gold);text-transform:uppercase}
.nav{display:flex;gap:clamp(14px,2.6vw,32px);align-items:center}
.nav a{
  color:var(--ink);text-decoration:none;font-weight:600;font-size:15px;opacity:.8;
  padding:6px 0;border-bottom:2px solid transparent;transition:.2s;
}
.nav a:hover,.nav a.on{opacity:1;border-bottom-color:var(--gold)}
.nav .cta-mini{background:var(--ink);color:#fff;border-radius:6px;padding:9px 18px;font-weight:700;opacity:1}
.nav .cta-mini:hover{background:#33404d;border-bottom-color:transparent}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--gold);outline-offset:2px}

.nav-toggle{display:none;background:none;border:0;color:var(--ink);font-size:26px;cursor:pointer}
@media (max-width:900px){
  .nav-toggle{display:block}
  .nav{
    position:absolute;top:72px;left:0;right:0;background:#fff;
    flex-direction:column;gap:0;display:none;border-bottom:1px solid var(--line);
    box-shadow:0 10px 20px rgba(0,0,0,.06);
  }
  .nav.open{display:flex}
  .nav a{width:100%;text-align:center;padding:15px 0;border-bottom:1px solid #f1eee6}
  .nav .cta-mini{border-radius:0}
}

/* ── 히어로 (밝은 톤) ── */
.hero{
  background:
    radial-gradient(ellipse 65% 55% at 80% 0%, rgba(185,154,74,.10), transparent 65%),
    linear-gradient(180deg,#fdfcf9 0%,#f6f4ef 100%);
  color:var(--ink);padding:clamp(64px,9vw,110px) 0 clamp(52px,7vw,84px);
  border-bottom:1px solid var(--line);
}
.hero .rule{width:64px;height:3px;background:var(--gold);margin-bottom:26px}
.hero .eyebrow{font-size:13px;letter-spacing:3.5px;color:var(--gold);text-transform:uppercase;margin-bottom:14px;font-weight:700}
.hero h1{font-family:'Noto Serif KR',serif;font-weight:700;font-size:clamp(28px,4.6vw,48px);line-height:1.35;letter-spacing:-.5px;color:var(--ink)}
.hero .sub{margin-top:20px;font-size:clamp(15.5px,1.9vw,19px);color:#565e66;max-width:660px}
.hero .actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-block;text-decoration:none;font-weight:800;font-size:16px;
  border-radius:8px;padding:14px 30px;transition:.18s;border:2px solid transparent;cursor:pointer;font-family:inherit;
}
.btn-gold{background:var(--ink);color:#fff}
.btn-gold:hover{background:#33404d}
.btn-line{border-color:#cfc9bb;color:var(--ink);background:#fff}
.btn-line:hover{border-color:var(--gold);color:var(--gold)}

.notice{
  margin-top:36px;max-width:660px;background:#fff;
  border:1px solid var(--line);border-left:4px solid var(--gold);
  border-radius:8px;padding:16px 20px;font-size:14.5px;color:#565e66;
  box-shadow:0 4px 14px rgba(28,39,51,.05);
}
.notice b{color:var(--ink)}

/* ── 신뢰 지표 스트립 ── */
.strip{background:#fff;border-bottom:1px solid var(--line)}
.strip .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px;padding:28px 22px}
.strip .item{text-align:center;padding:8px;border-right:1px solid var(--line)}
.strip .item:last-child{border-right:0}
@media (max-width:900px){.strip .item{border-right:0}}
.strip .num{font-family:'Noto Serif KR',serif;font-size:26px;font-weight:700;color:var(--ink)}
.strip .lab{font-size:13.5px;color:var(--muted);margin-top:2px}

/* ── 섹션 공통 ── */
.sec{padding:clamp(56px,8vw,92px) 0}
.sec.alt{background:var(--paper-2)}
.sec-head{max-width:720px;margin-bottom:clamp(30px,5vw,50px)}
.sec-head .eyebrow{font-size:12.5px;letter-spacing:3px;color:var(--gold);text-transform:uppercase;font-weight:700;margin-bottom:10px}
.sec-head h2{font-family:'Noto Serif KR',serif;font-size:clamp(24px,3.4vw,36px);color:var(--ink);line-height:1.4}
.sec-head p{margin-top:12px;color:var(--muted)}
.center{text-align:center;margin-left:auto;margin-right:auto}

.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.svc{
  background:#fff;border:1px solid var(--line);border-top:3px solid var(--gold);
  border-radius:10px;padding:28px 26px;transition:transform .2s, box-shadow .2s;
}
.svc:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(28,39,51,.08)}
.svc h3{font-family:'Noto Serif KR',serif;font-size:19px;color:var(--ink);margin-bottom:4px}
.svc .en{font-size:12px;letter-spacing:1.5px;color:var(--gold);text-transform:uppercase;font-weight:700;margin-bottom:12px}
.svc p{font-size:15px;color:var(--muted)}
.svc ul{margin-top:10px;padding-left:18px;font-size:14.5px;color:var(--text)}
.svc li{margin-top:4px}

.timeline{border-left:2px solid var(--gold);margin-left:8px;padding-left:30px;display:flex;flex-direction:column;gap:26px}
.tl{position:relative}
.tl::before{content:"";position:absolute;left:-38px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--paper-2);border:3px solid var(--gold)}
.tl .year{font-family:'Noto Serif KR',serif;font-weight:700;color:var(--gold);font-size:15px;letter-spacing:1px}
.tl h3{font-size:18px;color:var(--ink);margin:2px 0 4px}
.tl p{font-size:15px;color:var(--muted)}

.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:18px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px 20px;position:relative}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:'Noto Serif KR',serif;font-size:26px;font-weight:700;color:var(--gold);display:block;margin-bottom:8px;
}
.step h3{font-size:16.5px;color:var(--ink);margin-bottom:6px}
.step p{font-size:14px;color:var(--muted)}

.faq{max-width:820px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;font-weight:700;color:var(--ink);padding:18px 22px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--gold);font-size:22px;font-weight:400;flex:none}
.faq details[open] summary::after{content:"−"}
.faq .a{padding:0 22px 18px;color:var(--muted);font-size:15px}

.people{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.person{background:#fff;border:1px solid var(--line);border-radius:10px;padding:0 0 26px;overflow:hidden}
.person .photo{width:100%;height:240px;object-fit:cover;object-position:top;background:#eceae3}
.person .inner{padding:22px 26px 0}
.person .role{font-size:12.5px;letter-spacing:2px;color:var(--gold);text-transform:uppercase;font-weight:700}
.person h3{font-family:'Noto Serif KR',serif;font-size:20px;color:var(--ink);margin:6px 0 10px}
.person p{font-size:14.5px;color:var(--muted)}

/* 고객사 */
.clients{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.clients span{
  background:#fff;border:1px solid var(--line);border-radius:8px;
  padding:12px 8px;text-align:center;font-size:14px;color:var(--text);
}

.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}}
.c-info h3{font-family:'Noto Serif KR',serif;font-size:20px;color:var(--ink);margin-bottom:14px}
.c-info p{margin-bottom:10px;font-size:15.5px}
.c-info .big{font-size:22px;font-weight:800;color:var(--ink)}
form .row{margin-bottom:16px}
form label{display:block;font-weight:700;font-size:14px;color:var(--ink);margin-bottom:6px}
form input,form textarea,form select{
  width:100%;font:inherit;font-size:15.5px;padding:12px 14px;border:1.5px solid #d9d4c8;
  border-radius:8px;background:#fff;color:var(--text);
}
form textarea{min-height:130px;resize:vertical}
form input:focus,form textarea:focus{border-color:var(--gold)}
.form-note{font-size:13px;color:var(--muted);margin-top:8px}

.band{background:var(--paper-2);color:var(--ink);text-align:center;padding:clamp(48px,7vw,80px) 22px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band h2{font-family:'Noto Serif KR',serif;font-size:clamp(22px,3.2vw,32px);line-height:1.5}
.band p{margin-top:10px;color:var(--muted)}
.band .btn{margin-top:26px}

.en-block{border-top:1px solid var(--line);padding-top:34px;margin-top:20px;color:var(--muted);font-size:14.5px;max-width:760px}
.en-block h3{color:var(--ink);font-size:16px;letter-spacing:.5px;margin-bottom:8px}

/* ── 푸터 (밝은 톤) ── */
footer{background:#fff;border-top:1px solid var(--line);color:var(--text);font-size:14px;padding:44px 0 30px}
footer .cols{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between}
footer h4{color:var(--ink);font-size:15px;margin-bottom:10px;font-family:'Noto Serif KR',serif}
footer a{color:var(--text);text-decoration:none}
footer a:hover{color:var(--gold)}
footer .sns a{margin-right:12px;font-weight:600}
footer .fine{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}

.page-hero{
  background:linear-gradient(180deg,#fdfcf9,#f6f4ef);color:var(--ink);
  padding:clamp(48px,7vw,76px) 0;border-bottom:1px solid var(--line);
}
.page-hero h1{font-family:'Noto Serif KR',serif;font-size:clamp(26px,3.8vw,40px)}
.page-hero p{margin-top:10px;color:#565e66;max-width:660px}
.page-hero .rule{width:64px;height:3px;background:var(--gold);margin-bottom:22px}

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

/* ═══ 현 사이트 스타일 반영: 민트 히어로 + 대형 타이포 ═══ */
:root{--mint:#5ed0b4;--mint-deep:#3fae93}
.hero-mint{
  background:var(--mint);color:#101418;text-align:center;
  padding:clamp(70px,11vw,140px) 22px clamp(60px,9vw,110px);
  border-bottom:1px solid #4cbf a2;border-bottom:1px solid #4cbfa2;
}
.hero-mint .wedo{font-family:'Noto Serif KR',serif;font-size:clamp(18px,2.4vw,26px);letter-spacing:1px}
.hero-mint .big{
  font-family:'Archivo Black','Pretendard Variable',sans-serif;
  font-size:clamp(58px,13vw,150px);line-height:1.02;letter-spacing:-2px;color:#0d1114;
  margin:6px 0 10px;
}
.hero-mint .viewwork{
  display:inline-block;margin-top:8px;color:#0d1114;text-decoration:underline;
  text-underline-offset:5px;font-family:'Noto Serif KR',serif;font-weight:700;font-size:17px;
}
.hero-mint .viewwork:hover{color:#083b2f}
.hero-sub{background:#fff;border-bottom:1px solid var(--line);padding:clamp(36px,5vw,56px) 0}
.hero-sub h1{font-family:'Noto Serif KR',serif;font-size:clamp(22px,3vw,32px);color:var(--ink);line-height:1.5}
.hero-sub .sub{margin-top:14px;color:#565e66;max-width:720px;font-size:clamp(15px,1.8vw,17.5px)}
.hero-sub .actions{margin-top:24px;display:flex;gap:14px;flex-wrap:wrap}
.brand .mark{letter-spacing:1.5px;color:#8a6f33}
.brand .mark b{color:#8a6f33}

/* 도입실적 카드 */
.pf{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px}
.pf-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px;display:flex;flex-direction:column;gap:6px}
.pf-card .b-name{font-family:'Noto Serif KR',serif;font-size:19px;color:var(--ink)}
.pf-card .b-en{font-size:12.5px;letter-spacing:1px;color:var(--gold);text-transform:uppercase;font-weight:700}
.pf-card dl{margin-top:8px;font-size:14.5px;display:grid;grid-template-columns:86px 1fr;row-gap:4px}
.pf-card dt{color:var(--muted);font-weight:600}
.pf-card dd{color:var(--text)}
.pf-photo{border-radius:10px;border:1px solid var(--line);width:100%;max-width:520px}
.warn-box{
  max-width:820px;margin:30px auto 0;background:#fff7f0;border:1px solid #f0d9c2;
  border-left:4px solid #d98b3a;border-radius:8px;padding:16px 20px;font-size:14.5px;color:#6b4e2e;
}
.imgwide{border:1px solid var(--line);border-radius:10px}

/* ═══ 색 순환 히어로 (참고 영상 구현) ═══ */
@keyframes hueCycle{
  0%   {background-color:#5ED0B4}
  18%  {background-color:#33C4ED}
  36%  {background-color:#EDD85B}
  54%  {background-color:#E8955F}
  72%  {background-color:#D1445A}
  88%  {background-color:#8F7FD4}
  100% {background-color:#5ED0B4}
}
.hero-mint{animation:hueCycle 48s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){.hero-mint{animation:none;background:#5ED0B4}}

/* 스크롤 리빌 */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s cubic-bezier(.22,1,.36,1)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* 브랜드 워드 마퀴 */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;padding:16px 0}
.marquee .track{display:flex;gap:56px;width:max-content;animation:mq 40s linear infinite;font-family:'Noto Serif KR',serif;font-weight:700;font-size:17px;color:#9aa2ab;letter-spacing:2px;white-space:nowrap}
@keyframes mq{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.marquee .track{animation:none}}
.header-logo{height:46px;width:auto}