/* =========================================================================
   ictcheck.co.kr — 오에스 홈페이지 공통 스타일
   보고서·프로그램과 같은 얼굴(남색 + Hahmlet 제목)을 씁니다.
   기업 사이트라 밝은 단일 테마로 고정하고, 배경·글자색을 모두 명시합니다.
   ========================================================================= */
:root{
  --navy:#0E1F42;
  --navy-2:#16294f;
  --ink:#141b31;
  --ink-2:#3c4560;
  --ink-3:#6b7490;
  --paper:#f6f7fb;
  --card:#ffffff;
  --line:#dfe3ee;
  --line-soft:#eceff6;
  --blue:#2F5BD0;
  --blue-soft:#e8edfb;
  --ok:#2c7a5b;
  --ok-soft:#e8f4ee;
  --warn:#b3402f;
  --warn-soft:#fbecea;
  --shadow:0 1px 2px rgba(20,27,49,.05), 0 10px 28px rgba(20,27,49,.07);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"IBM Plex Sans KR","Malgun Gothic","맑은 고딕",sans-serif;
  font-size:16.5px;line-height:1.8;word-break:keep-all;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px;}
.serif{font-family:"Hahmlet","Nanum Myeongjo",serif;}
.mono{font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums;}

/* ---------------- 헤더 ---------------- */
.hdr{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid var(--line);}
.hdr-in{display:flex;align-items:center;gap:26px;height:64px;}
.hdr-logo img{height:30px;width:auto;}
.hdr-nav{display:flex;gap:2px;margin-left:auto;}
.hdr-nav a{
  text-decoration:none;font-size:14.5px;font-weight:600;color:var(--ink-2);
  padding:8px 13px;border-radius:7px;white-space:nowrap;
}
.hdr-nav a:hover{background:var(--line-soft);color:var(--ink);}
.hdr-nav a.on{color:var(--blue);background:var(--blue-soft);}
.hdr-tel{
  text-decoration:none;font-weight:700;font-size:15px;color:#fff;background:var(--navy);
  padding:9px 17px;border-radius:8px;white-space:nowrap;
}
.hdr-tel:hover{background:var(--navy-2);}

/* ---------------- 히어로 ---------------- */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden;}
.hero svg.curve{position:absolute;right:-60px;top:-40px;width:520px;height:520px;opacity:.5;}
.hero-in{position:relative;padding-top:84px;padding-bottom:90px;max-width:720px;}
.badge{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.02em;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
}
.badge b{color:#9FBBEF;}
.hero h1{
  font-family:"Hahmlet",serif;font-weight:700;margin:0 0 18px;
  font-size:clamp(30px,5.4vw,46px);line-height:1.32;letter-spacing:-.01em;text-wrap:balance;
}
.hero h1 em{font-style:normal;color:#9FBBEF;}
.hero p{margin:0 0 30px;font-size:17.5px;line-height:1.85;color:#C7D2EA;max-width:56ch;}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;}
.btn{
  display:inline-block;text-decoration:none;font-weight:700;font-size:15.5px;
  padding:13px 26px;border-radius:9px;border:1.5px solid transparent;text-align:center;
}
.btn-w{background:#fff;color:var(--navy);}
.btn-w:hover{background:#E8EDFB;}
.btn-o{border-color:rgba(255,255,255,.45);color:#fff;}
.btn-o:hover{background:rgba(255,255,255,.1);}
.btn-b{background:var(--blue);color:#fff;}
.btn-b:hover{background:#2448ad;}
.btn-line{border-color:var(--line);color:var(--ink-2);background:var(--card);}
.btn-line:hover{border-color:var(--blue);color:var(--blue);}

/* ---------------- 섹션 공통 ---------------- */
section{padding:76px 0;}
section.alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.kick{
  font-size:12.5px;font-weight:700;letter-spacing:.18em;color:var(--blue);
  text-transform:uppercase;margin:0 0 10px;
}
h2.sec{
  font-family:"Hahmlet",serif;font-weight:700;margin:0 0 14px;
  font-size:clamp(24px,3.6vw,32px);line-height:1.35;letter-spacing:-.01em;text-wrap:balance;
}
p.sec-sub{margin:0 0 40px;color:var(--ink-3);font-size:16px;max-width:60ch;}

/* 카드 그리드 */
.grid{display:grid;gap:16px;}
.g3{grid-template-columns:repeat(3,1fr);}
.g2{grid-template-columns:repeat(2,1fr);}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:26px 26px 24px;box-shadow:var(--shadow);
}
.card .ico{font-size:26px;margin-bottom:14px;}
.card h3{font-size:18px;font-weight:700;margin:0 0 9px;}
.card p{margin:0;font-size:14.8px;color:var(--ink-2);line-height:1.75;}
.card .more{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--blue);text-decoration:none;}

/* 숫자 스트립 */
.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.num{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px 22px;box-shadow:var(--shadow);}
.num b{display:block;font-family:"IBM Plex Mono",monospace;font-size:26px;color:var(--navy);}
.num span{font-size:12.5px;color:var(--ink-3);font-weight:600;}

/* 스크린샷 프레임 */
.frame{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:10px;box-shadow:var(--shadow);
}
.frame img{border-radius:8px;width:100%;}
.frame figcaption{font-size:13px;color:var(--ink-3);text-align:center;padding:10px 6px 4px;}

/* 표 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--card);box-shadow:var(--shadow);}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:15px;}
th,td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line-soft);vertical-align:top;}
thead th{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--ink-3);background:var(--line-soft);white-space:nowrap;}
tbody tr:last-child td{border-bottom:none;}
.tag{display:inline-block;font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:999px;}
.tag-on{background:var(--ok-soft);color:var(--ok);}
.tag-soon{background:var(--blue-soft);color:var(--blue);}
.tag-warn{background:var(--warn-soft);color:var(--warn);}

/* 굵은 CTA 밴드 */
.band{background:var(--navy);color:#fff;border-radius:16px;padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.band h3{font-family:"Hahmlet",serif;font-size:clamp(20px,3vw,26px);margin:0 0 6px;font-weight:700;}
.band p{margin:0;color:#C7D2EA;font-size:15px;}
.band .tel{font-family:"IBM Plex Mono",monospace;font-size:clamp(22px,4vw,30px);font-weight:700;
  color:#fff;text-decoration:none;white-space:nowrap;}
.band .tel small{display:block;font-family:"IBM Plex Sans KR",sans-serif;font-size:12.5px;color:#9FBBEF;font-weight:600;text-align:right;}

/* 체크 목록 */
ul.checks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
ul.checks li{padding-left:30px;position:relative;font-size:15.5px;color:var(--ink-2);}
ul.checks li::before{content:"✓";position:absolute;left:2px;top:0;color:var(--ok);font-weight:800;}
ul.checks b{color:var(--ink);}

/* ---------------- 푸터 ---------------- */
footer{background:var(--navy);color:#93A3C4;padding:44px 0 40px;margin-top:20px;}
.ftr{display:flex;justify-content:space-between;gap:26px;flex-wrap:wrap;align-items:flex-start;}
.ftr img{height:26px;margin-bottom:14px;}
.ftr p{margin:0;font-size:13.5px;line-height:1.9;}
.ftr a{color:#C7D2EA;text-decoration:none;}
.ftr a:hover{text-decoration:underline;}
.ftr-r{text-align:right;font-size:13.5px;}
.ftr-r .big{font-family:"IBM Plex Mono",monospace;font-size:22px;font-weight:700;color:#fff;display:block;margin-bottom:4px;}

/* ---------------- 반응형 ---------------- */
@media (max-width:880px){
  .g3{grid-template-columns:1fr 1fr;}
  .nums{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  body{font-size:15.5px;}
  .wrap{padding:0 18px;}
  .hdr-in{height:auto;flex-wrap:wrap;padding:10px 0;gap:10px 14px;}
  .hdr-nav{order:3;width:100%;margin-left:0;overflow-x:auto;padding-bottom:2px;}
  .hdr-nav a{padding:7px 11px;font-size:13.5px;}
  .hdr-tel{margin-left:auto;padding:8px 14px;font-size:13.5px;}
  .hero-in{padding-top:56px;padding-bottom:62px;}
  section{padding:56px 0;}
  .g3,.g2{grid-template-columns:1fr;}
  .band{padding:32px 24px;}
  .ftr,.ftr-r{text-align:left;}
  .ftr-r .big{text-align:left;}
}

/* ---------------- 무료 체험 ---------------- */
.trial-box{margin-top:28px;background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:30px 34px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  flex-wrap:wrap;box-shadow:var(--shadow);}
.trial-points{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;}
.trial-points li{font-size:14.8px;color:var(--ink-2);padding-left:26px;position:relative;line-height:1.65;}
.trial-points li::before{content:"✓";position:absolute;left:0;top:0;color:var(--blue);font-weight:700;}
.trial-points b{color:var(--ink);}
.trial-cta{font-size:16px;padding:15px 28px;white-space:nowrap;}
.trial-note{margin:10px 0 0;font-size:12.5px;color:var(--ink-3);}
@media (max-width:640px){
  .trial-box{padding:24px 20px;}
  .trial-cta{width:100%;text-align:center;}
}