/* 오에스 A/S — 고객 페이지 (모바일 우선) */
:root{
  --navy:#122A54; --deep:#0A1730; --blue:#3D6FC4;
  --gold:#D8B65E; --softgold:#E9CE8E;
  --ink:#101828; --gray:#66708A;
  --bg:#F3F5FA; --line:#E4E8F1;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:'Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Malgun Gothic',system-ui,sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.55;
}
.wrap{max-width:480px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg)}
a{text-decoration:none;color:inherit}

/* 헤더 */
.hero{
  background:linear-gradient(160deg,var(--navy) 0%,var(--deep) 100%);
  color:#fff; padding:20px 20px 56px; position:relative;
}
.hero .bar{display:flex;justify-content:space-between;align-items:center}
.brand{display:flex;align-items:baseline;gap:8px;white-space:nowrap;min-width:0}
.brand .logo{font-size:20px;font-weight:800;letter-spacing:1px}
.brand .sub{font-size:9.5px;color:var(--softgold);letter-spacing:.1em;text-transform:uppercase;
  overflow:hidden;text-overflow:ellipsis}
.hero-call{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;
  border:1px solid rgba(233,206,142,.55);color:var(--softgold);white-space:nowrap;flex:0 0 auto;
  padding:7px 12px;border-radius:999px;background:rgba(255,255,255,.04)
}
.hero h1{font-size:21px;font-weight:800;margin-top:26px}
.hero p{font-size:13px;color:#B9C3D8;margin-top:5px}
.hero .goldline{position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--gold),var(--softgold) 55%,transparent)}

main{flex:1;padding:0 16px 32px}

/* 카드 공통 */
.card{background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 2px 10px rgba(18,42,84,.06)}

/* 장비 카드 */
.device-card{margin-top:-34px;padding:18px 18px 6px;border-top:3px solid var(--gold);position:relative;z-index:1}
.chips{display:flex;gap:6px;margin-bottom:10px}
.chip{font-size:11px;font-weight:700;padding:3.5px 10px;border-radius:999px}
.chip.type{background:#EDF2FB;color:var(--blue)}
.chip.contract{background:#FBF4E1;color:#8A6A1F;border:1px solid var(--softgold)}
.model{font-size:19px;font-weight:800;color:var(--navy);letter-spacing:-.2px}
.device-card dl{margin-top:12px;border-top:1px solid var(--line)}
.device-card dl>div{display:flex;justify-content:space-between;padding:10px 2px;border-bottom:1px solid var(--line)}
.device-card dl>div:last-child{border-bottom:none}
.device-card dt{font-size:13px;color:var(--gray)}
.device-card dd{font-size:13.5px;font-weight:600;text-align:right}

/* 액션 버튼 */
.sec{font-size:14.5px;font-weight:800;color:var(--navy);margin:24px 2px 10px}
.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.act{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px 14px;display:flex;flex-direction:column;gap:3px;
  font-size:14.5px;font-weight:700;color:var(--navy);
  box-shadow:0 2px 8px rgba(18,42,84,.05)
}
.act small{font-size:11.5px;font-weight:500;color:var(--gray)}
.act .ico{font-size:22px;margin-bottom:5px}
.act.primary{background:var(--navy);color:#fff;border-color:var(--navy)}
.act.primary small{color:#C7D2E8}
.act:active{transform:scale(.98)}

/* 업체 페이지 — 장비 바로가기 목록 */
.devrow{display:flex;align-items:center;gap:10px;padding:13px 16px;margin-bottom:8px}
.devrow .drmain{flex:1;min-width:0}
.devrow .drmain b{display:block;font-size:14.5px;color:var(--navy)}
.devrow .drmain small{display:block;font-size:11.5px;color:var(--gray);margin-top:2px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.devrow .drgo{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:#EDF2FB;color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px}
.devrow:active{transform:scale(.99)}
.devrow:hover{border-color:var(--softgold)}

/* 원격지원 */
.remote{margin-top:24px;padding:18px}
.remote h3{font-size:15px;font-weight:800;color:var(--navy)}
.remote p{font-size:13px;color:var(--ink);margin-top:6px}
.remote b{color:var(--blue)}
.addr{display:flex;align-items:center;gap:8px;margin-top:12px;
  background:var(--deep);border-radius:12px;padding:13px 14px}
.addr span{flex:1;color:var(--softgold);font-weight:700;font-size:15.5px;
  font-family:'SF Mono',Consolas,monospace;letter-spacing:.02em;word-break:break-all}
.addr button{border:1px solid var(--gold);background:transparent;color:var(--gold);
  font-size:12px;font-weight:700;padding:7px 12px;border-radius:8px;cursor:pointer;white-space:nowrap}
.remote .cap{font-size:12px;color:var(--gray);margin-top:10px}

/* FAQ */
.qa{margin-bottom:8px;overflow:hidden}
.qa summary{list-style:none;cursor:pointer;padding:14px 16px;font-size:13.5px;font-weight:700;
  display:flex;align-items:center;gap:10px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:'Q';flex:0 0 auto;width:22px;height:22px;border-radius:7px;
  background:var(--navy);color:var(--softgold);font-size:12px;font-weight:800;
  display:inline-flex;align-items:center;justify-content:center}
.qa summary::after{content:'⌄';margin-left:auto;color:var(--gray);transition:transform .15s}
.qa[open] summary::after{transform:rotate(180deg)}
.qa .ans{padding:0 16px 14px 48px;font-size:13px;color:var(--ink);white-space:pre-line;line-height:1.65}
.qa[open]{border-color:var(--softgold)}

/* 푸터 */
footer{padding:22px 20px 30px;text-align:center;font-size:11.5px;color:var(--gray);line-height:1.8}
footer .fbrand{font-weight:800;color:var(--navy);font-size:12.5px}

/* 폼 페이지 */
.formhead{background:linear-gradient(160deg,var(--navy),var(--deep));color:#fff;padding:16px 18px 18px}
.formhead .back{font-size:13px;color:#B9C3D8;display:inline-flex;align-items:center;gap:4px}
.formhead h1{font-size:18px;font-weight:800;margin-top:8px}
.formhead .dv{font-size:12.5px;color:var(--softgold);margin-top:3px;font-weight:600}
.formbox{margin:16px;padding:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--navy);margin-bottom:7px}
.field label .req{color:#C0392B}
.field input[type=text],.field input[type=tel],.field input[type=number],.field textarea,.field select{
  width:100%;border:1.5px solid var(--line);border-radius:11px;padding:12px 13px;
  font-size:15px;font-family:inherit;color:var(--ink);background:#FBFCFE;outline:none
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field textarea:focus{border-color:var(--blue);background:#fff}
.hint{font-size:11.5px;color:var(--gray);margin-top:6px}
.pills{display:flex;flex-wrap:wrap;gap:8px}
.pills input{position:absolute;opacity:0;pointer-events:none}
.pills label{border:1.5px solid var(--line);border-radius:999px;padding:8.5px 14px;
  font-size:13px;font-weight:600;color:var(--ink);background:#fff;cursor:pointer}
.pills input:checked+label{background:var(--navy);border-color:var(--navy);color:#fff}
.filebtn{display:flex;align-items:center;gap:10px}
.filebtn input{display:none}
.filebtn label{flex:1;border:1.5px dashed var(--blue);border-radius:11px;padding:13px;
  text-align:center;font-size:13.5px;font-weight:600;color:var(--blue);background:#F6F9FE;cursor:pointer}
.filebtn .fname{font-size:12px;color:var(--gray);max-width:40%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.submit{width:100%;border:none;border-radius:13px;padding:15px;background:var(--navy);color:#fff;
  font-size:15.5px;font-weight:800;font-family:inherit;cursor:pointer;margin-top:4px}
.submit:active{background:var(--deep)}
.privacy{font-size:11px;color:var(--gray);text-align:center;margin-top:12px}
.infobox{background:#FBF6E7;border:1px solid var(--softgold);border-radius:11px;
  padding:11px 13px;font-size:12.5px;color:#6B5620;margin-bottom:16px}
.infobox b{color:#8A6A1F}

/* 완료 페이지 */
.donebox{margin:40px 16px;padding:36px 20px;text-align:center}
.doneicon{width:64px;height:64px;border-radius:50%;background:var(--navy);margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center}
.doneicon svg{width:30px;height:30px}
.donebox h1{font-size:19px;font-weight:800;color:var(--navy)}
.donebox .tno{display:inline-block;margin-top:10px;background:#FBF4E1;border:1px solid var(--softgold);
  color:#8A6A1F;font-weight:800;font-size:13.5px;padding:5px 14px;border-radius:999px}
.donebox p{font-size:13.5px;color:var(--gray);margin-top:14px}
.donebtns{display:grid;gap:9px;margin-top:24px}
.donebtns a{border-radius:12px;padding:13px;font-size:14px;font-weight:700}
.donebtns .b1{background:var(--navy);color:#fff}
.donebtns .b2{border:1.5px solid var(--line);color:var(--navy);background:#fff}

/* 랜딩/404 */
.center{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:40px 24px}
.center .mark{font-size:26px;font-weight:800;color:var(--navy)}
.center .mark small{display:block;font-size:11px;color:var(--gold);letter-spacing:.2em;margin-top:2px}
.center h1{font-size:17px;font-weight:800;color:var(--ink);margin-top:26px}
.center p{font-size:13.5px;color:var(--gray);margin-top:10px}
.center .callbtn{margin-top:24px;background:var(--navy);color:#fff;border-radius:12px;
  padding:13px 28px;font-size:14.5px;font-weight:700;display:inline-block}