/* 포브레인 소개 사이트 공통 디자인 */
:root{
  --deep:#0b2530; --deep2:#123543; --blue:#2e9bd6; --sky:#6fd3f5; --orange:#f2a541;
  --light:#f6f8f7; --white:#ffffff; --ink:#1b2b33; --muted:#51656e; --line:#dde6e9;
  --radius:18px; --wrap:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Noto Sans KR',sans-serif;font-size:19px;line-height:1.8;color:var(--ink);background:var(--white);word-break:keep-all;overflow-wrap:break-word}
img,video{max-width:100%;display:block}
a{color:var(--blue)}
h1,h2,h3{font-family:'Noto Serif KR',serif;line-height:1.35;font-weight:700}
h1{font-size:clamp(34px,5.4vw,56px)}
h2{font-size:clamp(28px,3.8vw,40px);margin-bottom:18px}
h3{font-size:clamp(22px,2.6vw,26px);margin-bottom:8px}
p+p{margin-top:14px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.br-m{display:none}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px;z-index:99}

/* ── 머리 ── */
.site-head{position:sticky;top:0;z-index:50;background:rgba(11,37,48,.97);backdrop-filter:blur(6px);border-bottom:1px solid rgba(111,211,245,.18)}
.head-in{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.logo img{height:22px;width:auto}
.logo span{font-size:14px;color:var(--sky);border-left:1px solid rgba(255,255,255,.3);padding-left:10px;line-height:1.2}
.nav{display:flex;gap:4px}
.nav>li{list-style:none;position:relative}
.nav>li>a{display:block;padding:10px 12px;color:#e8f6fb;text-decoration:none;font-size:17px;font-weight:500;border-radius:10px}
.nav>li>a:hover,.nav>li.on>a{color:#fff;background:rgba(46,155,214,.28)}
.nav .sub{display:none;position:absolute;left:0;top:100%;min-width:230px;background:#fff;border-radius:14px;box-shadow:0 14px 36px rgba(0,0,0,.22);padding:8px}
.nav .sub a{display:block;padding:9px 14px;color:var(--ink);text-decoration:none;font-size:16px;border-radius:8px}
.nav .sub a:hover{background:var(--light);color:var(--blue)}
.nav .sub .grp{font-size:13px;color:var(--muted);padding:8px 14px 2px;font-weight:700}
.nav>li:hover .sub,.nav>li:focus-within .sub{display:block}
.menu-btn{display:none;background:none;border:1px solid rgba(255,255,255,.35);color:#fff;font-size:16px;border-radius:10px;padding:8px 14px;font-family:inherit}

/* ── 공통 블록 ── */
.btn{display:inline-block;padding:14px 26px;border-radius:999px;font-weight:700;text-decoration:none;font-size:18px;border:2px solid transparent;cursor:pointer;font-family:inherit}
.btn-o{background:var(--orange);color:var(--deep)}
.btn-o:hover{filter:brightness(1.06)}
.btn-line{border-color:rgba(255,255,255,.6);color:#fff}
.btn-blue{background:var(--blue);color:#fff}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.kicker{display:inline-block;font-size:15px;font-weight:700;letter-spacing:.06em;color:var(--blue);margin-bottom:10px}
.dark .kicker{color:var(--sky)}
.sec{padding:80px 0}
.sec.light{background:var(--light)}
.sec.dark{background:var(--deep);color:#eef8fb}
.sec.dark h2,.sec.dark h3{color:#fff}
.lead{font-size:clamp(20px,2.3vw,23px);color:var(--muted);max-width:760px}
.dark .lead{color:#bfe3ef}
.center{text-align:center}.center .lead{margin:0 auto}

/* 첫 화면 */
.hero{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.hero .bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.42}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,37,48,.96) 0%,rgba(11,37,48,.75) 50%,rgba(11,37,48,.25) 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:110px;padding-bottom:110px}
.hero h1{max-width:760px}
.hero h1 em{font-style:normal;color:var(--sky)}
.hero p.lead{color:#d6eef6;margin-top:22px}

/* 하위 페이지 머리 */
.page-head{background:var(--deep);color:#fff;padding:56px 0 46px;position:relative;overflow:hidden}
.page-head::before{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(46,155,214,.45),transparent 70%)}
.page-head .wrap{position:relative}
.crumb{font-size:15px;color:var(--sky);margin-bottom:12px}
.crumb a{color:var(--sky);text-decoration:none}
.page-head h1{font-size:clamp(32px,4.6vw,48px)}
.page-head .lead{color:#cfe9f2;margin-top:12px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{font-size:14px;border:1px solid var(--sky);color:var(--sky);border-radius:999px;padding:2px 12px}
.light .tag,.sec .tag{border-color:var(--blue);color:var(--blue)}
.subtabs{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:72px;z-index:40}
.subtabs .wrap{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}
.subtabs a{white-space:nowrap;padding:14px 14px;text-decoration:none;color:var(--muted);font-size:16px;border-bottom:3px solid transparent}
.subtabs a.on{color:var(--deep);border-bottom-color:var(--orange);font-weight:700}

/* 본문 */
.page-body{padding:64px 0 80px}
.page-body h2{margin-top:56px}
.page-body h2:first-child{margin-top:0}
.prose{max-width:780px}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.split.rev{grid-template-columns:.9fr 1.1fr}
.split.rev>:first-child{order:2}
.photo{border-radius:var(--radius);overflow:hidden;box-shadow:0 18px 40px rgba(11,37,48,.16)}
.photo img{width:100%;height:100%;object-fit:cover}
.photo.tall{aspect-ratio:4/5}.photo.wide{aspect-ratio:16/10}
.cap{font-size:15px;color:var(--muted);margin-top:8px}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-top:28px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-decoration:none;color:var(--ink);display:block;transition:.2s}
.light .card{border-color:#e3eaec}
a.card:hover{border-color:var(--blue);transform:translateY(-3px);box-shadow:0 12px 26px rgba(11,37,48,.1)}
.card .num{font-family:'Noto Serif KR',serif;font-size:34px;color:var(--blue);font-weight:800;line-height:1}
.card h3{margin-top:10px}
.card p{color:var(--muted);font-size:17px;line-height:1.7}
.card .more{display:inline-block;margin-top:12px;font-size:16px;color:var(--blue);font-weight:700}
.card.img{padding:0;overflow:hidden}
.card.img img{aspect-ratio:16/10;object-fit:cover;width:100%}
.card.img .in{padding:22px 24px 24px}
.dark .card{background:var(--deep2);border-color:rgba(111,211,245,.25);color:#eef8fb}
.dark .card p{color:#bfe3ef}

.group{border-radius:22px;padding:30px;margin-top:28px;background:#fff;border:1px solid var(--line)}
.group .gk{font-size:15px;font-weight:700;color:var(--blue)}
.group h3{font-size:clamp(24px,3vw,30px)}
.group>p{color:var(--muted)}

.steps{counter-reset:s;display:grid;gap:16px;margin-top:24px}
.steps li{list-style:none;counter-increment:s;position:relative;padding:20px 22px 20px 78px;background:var(--light);border-radius:16px}
.steps li::before{content:counter(s);position:absolute;left:22px;top:18px;width:40px;height:40px;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:19px}
.steps li b{display:block;font-size:20px}
.dark .steps li{background:var(--deep2)}

.checks{margin-top:16px}
.checks li{list-style:none;padding:8px 0 8px 36px;position:relative;border-bottom:1px dashed var(--line)}
.checks li::before{content:"";position:absolute;left:6px;top:18px;width:14px;height:8px;border-left:3px solid var(--blue);border-bottom:3px solid var(--blue);transform:rotate(-45deg)}

.study{display:grid;grid-template-columns:150px 1fr;gap:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-top:16px}
.study .big{font-family:'Noto Serif KR',serif;font-size:42px;font-weight:800;color:var(--blue);line-height:1}
.study .big small{font-size:18px;color:var(--muted);font-family:'Noto Sans KR';font-weight:500;display:block;margin-top:6px}
.study .who{font-size:15px;color:var(--muted)}
.study .res{font-size:20px;font-weight:700;margin:4px 0}
.study .src{font-size:15px;color:var(--muted)}

.note{background:#fff7ea;border-left:5px solid var(--orange);border-radius:12px;padding:18px 22px;margin-top:28px;font-size:17px;color:#5a4320}
.note b{color:#3d2c10}
.todo{background:#fff1c2;border:2px dashed var(--orange);border-radius:10px;padding:2px 10px;color:#7a5200;font-size:16px}

.quote{background:var(--light);border-radius:var(--radius);padding:28px;display:grid;grid-template-columns:90px 1fr;gap:20px;align-items:center;margin-top:20px}
.quote img{width:90px;height:90px;border-radius:50%;object-fit:cover}
.quote p{font-family:'Noto Serif KR',serif;font-size:21px;line-height:1.6}
.quote small{display:block;margin-top:8px;font-size:15px;color:var(--muted);font-family:'Noto Sans KR'}

table.tbl{width:100%;border-collapse:collapse;margin-top:20px;font-size:17px}
.tbl th,.tbl td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{background:var(--light);font-size:15px;color:var(--muted)}

.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{font-weight:700;font-size:20px;cursor:pointer;list-style:none;position:relative;padding-right:36px}
.faq summary::after{content:"+";position:absolute;right:6px;top:-4px;font-size:28px;color:var(--blue)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin-top:12px;color:var(--muted)}

.video{border-radius:var(--radius);overflow:hidden;background:#000;box-shadow:0 18px 40px rgba(11,37,48,.2)}

/* 새소식 */
.news-filter{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.news-filter button{font-family:inherit;font-size:16px;border:1px solid var(--line);background:#fff;padding:8px 16px;border-radius:999px;cursor:pointer;color:var(--muted)}
.news-filter button.on{background:var(--deep);color:#fff;border-color:var(--deep)}
.news-list{margin-top:26px;display:grid;gap:16px}
.news-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px}
.news-item .meta{font-size:15px;color:var(--muted)}
.news-item .cat{display:inline-block;background:var(--light);color:var(--blue);font-weight:700;border-radius:6px;padding:0 8px;margin-right:8px}
.news-item h3{margin:6px 0 4px;font-size:22px}
.news-item p{font-size:17px;color:var(--muted)}

/* 상담 양식 */
.form{display:grid;gap:16px;max-width:640px;margin-top:22px}
.form label{font-weight:700;font-size:17px}
.form input,.form select,.form textarea{width:100%;font-family:inherit;font-size:18px;padding:12px 14px;border:1px solid #c9d6da;border-radius:12px;margin-top:6px;background:#fff}
.form textarea{min-height:130px}

/* 상담 띠 */
.cta-band{background:linear-gradient(120deg,var(--deep) 0%,#0f3a4c 60%,#155a77 100%);color:#fff;padding:64px 0}
.cta-band h2{color:#fff}
.cta-band p{color:#cfe9f2}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}

/* 다음 페이지 */
.pager{display:flex;justify-content:space-between;gap:16px;margin-top:56px;border-top:1px solid var(--line);padding-top:24px}
.pager a{text-decoration:none;font-size:17px;max-width:48%}
.pager small{display:block;color:var(--muted);font-size:14px}

/* ── 꼬리 ── */
.site-foot{background:#081c24;color:#9fc0cc;padding:54px 0 40px;font-size:16px;line-height:1.75}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:36px}
.site-foot b{color:#fff;font-size:18px}
.site-foot a{color:#cfe9f2;text-decoration:none}
.site-foot .tel{font-size:22px;color:#fff;font-weight:700}
.foot-note{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:14px;color:#7f9ea9}
.foot-note strong{color:#f2c27e;font-weight:500}

/* ── 휴대폰 ── */
@media (max-width:1020px){
  .nav{display:none;position:absolute;left:0;right:0;top:72px;background:var(--deep);flex-direction:column;padding:10px 20px 24px;max-height:calc(100vh - 72px);overflow:auto;gap:0}
  .nav.open{display:flex}
  .nav>li>a{font-size:19px;padding:14px 4px;border-bottom:1px solid rgba(255,255,255,.1);border-radius:0}
  .nav .sub{display:block;position:static;background:none;box-shadow:none;padding:4px 0 10px 12px;min-width:0}
  .nav .sub a{color:#bfe3ef;padding:7px 4px;font-size:17px}
  .nav .sub a:hover{background:none;color:#fff}
  .nav .sub .grp{color:var(--orange);padding:8px 4px 0}
  .menu-btn{display:block}
}
@media (max-width:760px){
  body{font-size:18px}
  .br-m{display:inline}
  .sec{padding:56px 0}
  .split,.split.rev{grid-template-columns:1fr;gap:28px}
  .split.rev>:first-child{order:0}
  .hero .wrap{padding-top:70px;padding-bottom:70px}
  .hero::after{background:linear-gradient(180deg,rgba(11,37,48,.7) 0%,rgba(11,37,48,.95) 70%)}
  .study{grid-template-columns:1fr;gap:8px}
  .quote{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:22px}
  .group{padding:22px}
  .steps li{padding-left:70px}
  .tbl{font-size:15px}
  .logo span{display:none}
}